EP3532088A1 - Utilisation d'un sirna pour le traitement des cancers - Google Patents
Utilisation d'un sirna pour le traitement des cancersInfo
- Publication number
- EP3532088A1 EP3532088A1 EP17771797.2A EP17771797A EP3532088A1 EP 3532088 A1 EP3532088 A1 EP 3532088A1 EP 17771797 A EP17771797 A EP 17771797A EP 3532088 A1 EP3532088 A1 EP 3532088A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sirna
- composition
- siar
- administration
- sitsp1
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
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- A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
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- A61P35/04—Antineoplastic agents specific for metastasis
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
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- C12N15/1138—Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing against receptors or cell surface proteins
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- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6844—Nucleic acid amplification reactions
- C12Q1/6851—Quantitative amplification
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- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
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- C12N2310/00—Structure or type of the nucleic acid
- C12N2310/10—Type of nucleic acid
- C12N2310/14—Type of nucleic acid interfering nucleic acids [NA]
Definitions
- the present invention relates to a new use of double-stranded oligonucleotides, and more particularly a use according to a new formulation and a new mode of administration.
- Micro RNAs are small RNAs encoded by the genome of all eukaryotic organisms. After transcription and maturation, they are loaded into a protein complex: RNA Induced Silencing Complex (RISC). When they hybridize with a messenger RNA (mRNA) or they induce its cleavage, leading to the degradation of the mRNA, or they inhibit its translation into protein.
- RISC RNA Induced Silencing Complex
- Interfering RNAs or Small Interfering RNAs are synthetic double-stranded oligoribonucleotides that when introduced into cells mimic the action of miRNAs and trigger the RNA interference mechanism. Their mechanism of action is therefore not comparable to any other type of oligonucleotide.
- a “double-stranded oligonucleotide” in the following refers more particularly to a siRNA. More precisely, when the double-stranded oligonucleotide is an siRNA, it is loaded into the RISC complex. One of the two strands, said “passenger” is cut and degraded, the other strand, said “guide”, remains in the RISC complex. This guide strand hybridizes with a region of an mRNA which it is complementary. This mRNA is called “siRNA target mRNA” and by extension, the gene that is transcribed to generate this RNA is called the “siRNA target gene”. This target mRNA can be coding or non-coding.
- siRNA cleaves the target mRNA with which it hybridizes and causes its degradation, or it prevents its translation. This results in a decrease in the amount of the target mRNA, and / or in a decrease in the amount of protein encoded by the mRNA if the mRNA is an encoding mRNA.
- siRNA The major obstacle that must be overcome in order to be able to use a siRNA for a therapeutic purpose, in particular in humans, is to obtain that the siRNA penetrates the tissue (s) of interest, that it stays there in an active state in sufficient concentration and long enough to produce the inhibition of the desired gene expression.
- the method of administration of siRNA should additionally be clinically acceptable, nontoxic and not trigger an adverse immune response.
- the method must be usable to deliver any type of siRNA, regardless of the siRNA target mRNA and its level of expression.
- oligonucleotides such as, for example, antisense oligodeoxynucleotides (ODNs), ribozymes, aptamers, morpholinos, or triple helix oligonucleotides.
- ODNs antisense oligodeoxynucleotides
- ribozymes oligodeoxynucleotides
- aptamers aptamers
- morpholinos morpholinos
- triple oligonucleotides Several of these oligonucleotides enter cells via a receptor-mediated mechanism of endocytosis (Vlassov et al, 1994), but such mechanisms have not been demonstrated for siRNAs.
- siRNA RNA single-stranded oligonucleotides
- systemic means that the siRNA is conveyed in the body to act at a distance from the place where it is administered, as opposed to a local or loco-regional administration, in particular as opposed to an administration. intratumoral.
- the systemic distribution in the body is obtained by any method that results in a passage of siRNA in extracellular fluids such as blood, lymph or cerebrospinal fluid, that the compound containing the siRNA is ingested (orally). ), or injected (parenterally), or through the skin or mucous membranes.
- Nucleic acids in general and siRNAs in particular are negatively charged. When they are outside the cells, this negative charge limits their penetration into the cells. For this reason, many methods, such as electroporation, liposomes, nanoparticles, polymers of different kinds, have been developed to make a siRNA penetrate into a cell in culture. However, these tools are not applicable to administer a siRNA systemically in a living organism.
- the negative charge of siRNAs facilitates their association with cationic molecules such as lipid or polymeric compositions.
- siRNAs have been chemically conjugated or incorporated into different targeting agents.
- a “targeting agent” in the following refers to an agent that aims to convey the oligonucleotide in the biological fluids from the point of administration to target tissue and penetrate the cell interior, either by penetrating the oligonucleotide into the interior of the cell, or by fusing with the plasma membrane of the cell and releasing the oligonucleotide to the cell. inside of it.
- targeting agents are on the one hand compounds containing macromolecules which form complexes with the oligonucleotides, in the form of a particle having a size greater than 20 nm, and on the other hand chemical conjugates associating via a link covalent one and / or the other strand of a siRNA to a compound intended to make it enter the cell, such as for example cholesterol or a penetrating peptide.
- “Penetrating peptides” are peptides capable of penetrating spontaneously inside the cells and retain this property when they are conjugated with a molecule, causing the crossing of the latter.
- the targeting agents can be composed of different types of macromolecules, such as micellar lipids, cholesterol, liposomes, polymers, polyplexes, chitosans, quantum dots, penetrating peptides, dendrimers, derivatives of the polyethylenimine, nanoparticles, magnetic or super-magnetic spheres, or inorganic or organic nanostructures.
- macromolecules such as micellar lipids, cholesterol, liposomes, polymers, polyplexes, chitosans, quantum dots, penetrating peptides, dendrimers, derivatives of the polyethylenimine, nanoparticles, magnetic or super-magnetic spheres, or inorganic or organic nanostructures.
- targeting agents either because of their chemical or structural nature, or because of their association with an oligonucleotide, have been shown to exhibit toxic effects or trigger an undesirable immune response in animals or humans ( Robbins et al, 2009), which is not the case with non-vectorized siRNAs (Heidel et al, 2004).
- these targeting agents often preferentially distribute the siRNAs in certain organs, in particular the liver, which limits their therapeutic use in other organs. An administration method that does not require the addition of vectorization agents is therefore advantageous.
- the intraperitoneal route is effective in animals but it is complex to use in humans, especially if it must be used repeatedly, especially because of infectious risks because it requires the surgical installation of a catheter and its use is generally restricted to the treatment of pathologies developing in the peritoneum or in intraperitoneal organs such as the ovaries. Even in these therapeutic indications, this route of administration presents significant obstacles which limit its use and effectiveness and it is therefore necessary to have alternative solutions (Zeimet et al, 2009).
- siRNAs The administration of non-intravenous siRNAs was also tested. However, like other oligonucleotides, intravenously injected siRNAs are eliminated by renal filtration (van de Water et al, 2006).
- siRNA mode of administration compatible with human clinical use, without a vectoring agent, making it possible to address them effectively in numerous target organs, in particular in the prostate, and / or in tumors and / or tumor metastases, for the purpose of preventing and / or treating pathologies.
- One of the aims of the invention is thus to provide modes of administration which make it possible to efficiently distribute siRNAs in numerous target organs, in particular in the prostate, and / or in tumors and / or in the metastases of these tumors.
- the siRNA targeting mRNA transcribed from this gene in order to prevent and / or treat pathologies resulting directly or indirectly from the expression of a gene, the siRNA targeting mRNA transcribed from this gene.
- an "addressing molecule” is a molecule targeting the oligonucleotide to a particular cell type, such as endothelial cells or cancer cells.
- An addressing molecule is not intended to penetrate the oligonucleotide inside the cell or to penetrate with the oligonucleotide but to increase its concentration in the outer membrane of the cell of interest.
- an addressing molecule may be an aptamer, an antibody, transferrin, an RGD peptide, the ligand of a receptor, this addressing molecule interacting or binding to a molecule expressed at the targeted cell surface, such as a receptor, an integrin, a membrane antigen such as for example PSMA (Prostate Specifies Membrane Antigen).
- the targeting molecule is usually either covalently coupled to the oligonucleotide, or incorporated into a targeting agent, for example a nanoparticle or a liposome containing the oligonucleotide, so as to address the targeting agent to the cell or the target tissue.
- the CD36 receptor is a membrane receptor expressed on the membrane of vascular and lymphatic endothelial cells and expressed by many types of cells, especially tumor cells, for example leukemic cells.
- the CD36 receptor binds molecules of different natures. It is in particular a long chain fatty acid receptor, in particular C16 or C18 fatty acids, an oxidized low density lipoprotein receptor, or oxidized LDL receptor, an oxidized phospholipid receptor, a Thrombospondin receptor , a receptor of the hexarelin peptide, a fibril amyloid receptor.
- the inhibitory effect of the gene expression of a siRNA is transient: when an siRNA enters a cell, it inhibits the expression of its target gene for a period that is shorter as the cells divide frequently. , which is particularly the case of most cancer cells. The amount of mRNA transcribed from this target gene and / or the protein encoded by this mRNA is then restored, creating a "peaks and valleys" effect (Bartlett and Davis, 2006).
- the effectiveness of an siRNA is dependent on its concentration in the cells of the targeted tissue and its residence time in that tissue. This concentration itself depends on the dose of siRNA administered, the stability of the latter in the extracellular media, its ability to penetrate the cells of the target tissues, the kinetics of this penetration, and that of its elimination. .
- One of the aims of the invention is to provide methods of systemic administration of siRNA, and in particular formulations, which increase the concentration of siRNA in serum and / or tissues and / or prolong the duration of its effects. avoiding the effects of peaks and valleys.
- the invention thus relates to a composition
- a composition comprising at least one siRNA, said siRNA hybridizing with a mRNA, coding or non-coding, of which it induces the degradation or of which it inhibits the translation, the expression of said mRNA or of the protein for which it being involved in a pathology, the composition being used for the prevention and / or treatment of said pathology, said composition being formulated for a continuous systemic mode of administration.
- siRNA according to the present invention is a pair of two oligoribonucleotides which hybridize with each other, each oligoribonucleotide comprising from 2 to 100, in particular 5 to
- said siRNA may present chemical modifications such as chemical modifications on the guide strand or the passenger strand, on one or more nucleotides located at the 3 'or 5' terminal ends, and / or on one or more nucleotides constituting the internal skeleton.
- Said chemical modifications according to the invention are on ribose and / or base and / or phosphoric acid.
- Said chemical modifications according to the invention comprise at least one substitution of the 2 'OH group of the ribose with a 2'-O-methyl RNA (2'OMe) or 2' - ⁇ 9-methoxyethyl (2'MOE) group or 2 fluoro (2T) or 2'-fluoro-P-arabinonucleotide (FANA), an allylation of 2'-oxygen to aminoethyl, guanidinoethyl-, cyanoethyl- or alkyl, replacement of the phosphodiester group by phosphorothioate, alkylation or thiolation of one or more nucleotides of siRNA, replacement of a ribonucleotide by a deoxyribonucleotide, or replacement of a nucleotide with a Locked Nucleic Acid (LNA).
- said siRNA is devoid of chemical modification.
- said siRNA is devoid of chemical modification, and comprises two deoxynucleotides overflowing at the 3 'end, in particular two deoxythymidines.
- said siRNA is devoid of chemical modification, and does not comprise two deoxynucleotides overflowing at the 3 'end, in particular two deoxythymidines.
- the invention relates to a composition for its above-mentioned use, wherein said siRNA can be any type of siRNA.
- said siRNA can be any type of siRNA.
- the formulation and the method of administration, object of the present invention does not depend on the siRNA administered nor the siRNA target as illustrated by Examples 3 and 9.
- the invention relates to a composition for its aforementioned use (systemic and continuous), wherein at least one siRNA comprises or consists of one of the pairs of oligonucleotides as defined in Table 1.
- the invention relates to a composition for its above-mentioned use, wherein said at least one siRNA is one of the following siRNAs: siAR-1, siAR-1b, siAR-2, siAR-2b, siAR-3 , siAR-3b, siAR-4, siAR4b, siAR-5, siAR-5b, siVEGF-1, siVEGF-lb, siTSP1-1, siTSP1-lb, siTSP1-2, siTSPl-2b, siTSP1-3, siTSP1-3b , siTSP1-4, siTSP1-4b, siTSP1-5, siTSP1-5b, siFoxP3-1, siFoxP3-1b, siFoxP3-2, siFoxP3-2b, as shown in Table 1, and SEQ ID NO: 1 to SEQ sequences. ID NO 52.
- the present invention is also based on the unexpected results of the inventors who have discovered new siRNAs targeting the FoxP3 transcription factor.
- the FoxP3 targeting siRNAs are more particularly used to target suppressive or immunosuppressive cells, particularly suppressor T cells, also called regulatory T cells, and in particular in all types of cancers or in autoimmune diseases. FoxP3 targeting oligonucleotides are also used to target cancer cells expressing this transcription factor.
- the present invention also relates to a siRNA inhibiting the synthesis of the FoxP3 transcription factor, wherein said siRNA is one of the following siRNAs: siFoxP3-1, siFoxP3-1b, siFoxP3-2 or siFoxP3-2b such as defined in Table 1 for use as a medicament or for use in the prevention and / or treatment of a condition associated with the expression of the FoxP3 transcription factor in combination with a pharmaceutically acceptable carrier.
- siRNA is one of the following siRNAs: siFoxP3-1, siFoxP3-1b, siFoxP3-2 or siFoxP3-2b such as defined in Table 1 for use as a medicament or for use in the prevention and / or treatment of a condition associated with the expression of the FoxP3 transcription factor in combination with a pharmaceutically acceptable carrier.
- said siRNA presents chemical modifications.
- said composition for its use in the prevention and / or treatment of a pathology associated with the expression of the FoxP3 transcription factor, said siRNAis devoid of chemical modification.
- said composition for use in the prevention and / or treatment of a pathology associated with the expression of the FoxP3 transcription factor said siRNA is devoid of chemical modification and comprises two deoxynucleotides bridging at the 3 'end , including two deoxythymidines.
- said composition for its use in the prevention and / or treatment of a pathology associated with the expression of the FoxP3 transcription factor said siRNAis devoid of chemical modification and does not comprise two deoxynucleotides overflowing at the end. 3 ', in particular two deoxythymidines.
- siRNA siAR-1, siAR-1b, siAR-2, siAR-2b, siAR-3, siAR-3b, siAR-4, siAR-4b, siAR-5 , siAR-5b are collectively referred to as the siRNA-AR family.
- siVEGF-1, siVEGF-11 siRNAs are collectively referred to as the siRNA-VEGF family.
- siTSP1-5b are collectively referred to as the siRNA-TSP1 family.
- SiFOXP3-1, SiFOXP3-1b, SiFOXP3-2, siFOXP3-2b siRNA are collectively referred to as the siRNA-FoxP3 family.
- the expression "at least 75% identity with a sequence” in Table 1 means 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% and 100%, including 79%, 81%, 84%, 86%, 90% %, 95% and 99%.
- the invention relates to a composition for its above-mentioned use, wherein said at least one siRNA is a mixture of siRNA.
- the invention relates to a composition for its above-mentioned use, wherein said mixture is a mixture of two siRNAs.
- the invention relates to a composition for its above-mentioned use, wherein said mixture is a mixture of three siRNAs.
- the invention relates to a composition for its above-mentioned use, wherein said siRNA mixture comprises or consists of the following siRNAs:
- siRNA belonging to the siRNA-AR family with a siRNA belonging to the siRNA-VEGF family, and in particular siAR-1 siRNA and siVEGF-1 siRNA;
- siRNA belonging to the siRNA-AR family with a siRNA belonging to the siRNA-TSP 1 family, and in particular siARNA siRNA and siTSP 1-1 siRNA;
- siRNA belonging to the siRNA-AR family with a siRNA belonging to the siRNA-FoxP3 family, and in particular siAR-1 siRNA and siFNA siFNA3-2;
- siRNA belonging to the siRNA-VEGF family with a siRNA belonging to the siRNA-TSP1 family, and in particular siVEGF-1 siRNA and siTS1-1 siRNA;
- siRNA belonging to the siRNA-VEGF family with a siRNA belonging to the siRNA-FoxP3 family, and in particular the siVEGF-1 siRNA and the siFNA siFoxP3-2 siRNA;
- siRNA belonging to the siRNA-TSP1 family with a siRNA belonging to the siRNA-FoxP3 family, and in particular the siRNA siTS1-1 and the siFNA siFoxP3-2;
- An advantageous aspect of the invention relates to a composition wherein said siRNA is siAR-1, of SEQ ID No. 1 and 2, for its use as a medicament or for its use for the prevention and / or treatment of an associated pathology to the expression of androgen receptor, in particular for the prevention and / or treatment of prostate cancer or metastases of this cancer, in association with a pharmaceutically acceptable vehicle, according to a continuous systemic administration mode.
- the pathology according to the invention is a human or animal pathology.
- the pathology according to the invention is more particularly associated with the expression of the mRNA encoding the androgen receptor (AR), or the Thrombospondin-1 (TSP1), or the transcription factor. FoxP3, or the Vascular Endothelial Growth Factor A (VEGF).
- AR androgen receptor
- TSP1 Thrombospondin-1
- FoxP3 or the Vascular Endothelial Growth Factor A (VEGF).
- VEGF Vascular Endothelial Growth Factor A
- the pathology according to the invention is more particularly a primary tumor, a metastatic tumor, or a pathology associated with the presence of suppressive or immuno suppressive cells.
- a "primary tumor” according to the invention is especially and without limitation a cancer of the anus, the appendix, the mouth, the bronchi and / or the upper airways, the bile duct, the nasal cavity and paranasal, brain, heart, cervix, colon, uterine body, stomach, liver, salivary glands, throat, tongue, lips, nasopharynx, esophagus, bones, ovary, pancreas, parathyroid, penis, pleura, lung, prostate, rectum, kidney, breast, adrenals, testes , head and neck, thymus, thyroid, urethra, vagina, gallbladder, bladder, vulva, gastrointestinal cancer, lymphoma, melanoma or cancer non-melanoma skin, myeloma, sarcoma, leukemia, mesothelioma, cholangiocarcinoma, osteosarcoma, glioblastoma,
- Metastases represent a frequent and major complication of cancer and therapeutic failures in oncology are mainly related to the development of metastases.
- a primary tumor can disseminate to form one or more metastases, in one or more types of tissues such as bones, liver, spleen, ganglia or brain.
- pathology associated with the presence of suppressive or immunosuppressive cells means that said suppressive or immunosuppressive cells facilitate the development of a pathology and in particular the initiation, implantation or development of a tumor or its metastatic dissemination.
- This term includes in particular regulatory T cells, also called T suppressors, Th17 lymphocytes and MDSCs (myeloid-derived suppressor cells).
- the invention relates to a composition for its above-mentioned use, wherein said siRNA is used in combination with at least one anti-angiogenic agent and / or an anti-tumor agent and / or an immunotherapeutic agent, for use simultaneous, separate or spread over time.
- anti-angiogenic agent means an agent for inhibiting the formation of blood vessels, in particular by inhibiting the expression or the function of VEGF, FGF2, PDGF, HGF, MET, FLT3, VEGFR1, VEGFR2, VEGFR3 , KIT, TIE1, TIE2, RET, TRKB, AXL.
- an immunotherapeutic agent is an agent whose objective is to stimulate, in particular by vaccination and / or to restore an immune response, in particular by the inhibition of immunosuppressive or suppressive cells, and / or by inhibition of lymphocyte anergy.
- Immunotherapies within the meaning of the invention include therapies involving the administration of cytokines, antibodies targeting the control points and regulation of the immune system (immune checkpoint, for example PD1, PDL1, CTLA4, Tigit ), treatment with T lymphocytes, genetically modified (Car-T) or not, or by dendritic cells, vaccination, antihelminth treatments.
- Such an agent is especially chosen from Ipilimumab, nivolimumab, T-Vec, Sipuleucel-T, Blinatumomab, and Pembrolizumab, or from the agents of Table 3.
- an anti-tumor or chemotherapeutic agent is an agent possessing anti-inflammatory properties.
- -cancerous agents chosen from: alkylating agents, antimetabolic agents, cytotoxic antibiotics, topoisomerase I inhibitors, inhibitors topoisomerase II, anti-tumor antibiotics, genotoxic agents, PARP inhibitors, anti-microtubule agents.
- Such an agent is for example chosen from: Bendamustine, Temozolomide, Mechlorethamine, Cyclophosphamide, Carmustine, Cisplatin, Busulfan, Thiotepa, Decarbazine, Pentostatin, Methotrexate, Pemetrexed, Floxuridine, Fluorouracil, Cytarabine, Mercaptopurine, Thiguanine, Rubitecan, Mitomycin C, Daunorubicin, Doxorubicin, Bleomycin, Plicamycin, Mitoxantrone HCl, Oxaliplatin, Vinorelbine, BMS 184476, Vincristine sulfate, Vinblastine, Taxotere, Taxol, or the agents listed in Table 4.
- the invention relates to a composition for its above-mentioned use, wherein said composition comprises a siRNA belonging to the siRNA-AR family in association with an anti-tumor agent and / or an immunotherapeutic agent and / or an agent antiangiogenic.
- the invention relates to a composition for its above-mentioned use, wherein said composition comprises a siRNA belonging to the siRNA-VEGF family in association with an antitumor agent and / or an immunotherapeutic agent and / or an agent antiangiogenic.
- the invention relates to a composition for its above-mentioned use, wherein said composition comprises a siRNA belonging to the siRNA-TSP1 family in association with an anti-tumor agent and / or an immunotherapeutic agent and / or an agent antiangiogenic.
- the invention relates to a composition for its above-mentioned use, wherein said composition comprises a siRNA belonging to the siRNA-FoxP3 family in association with an anti-tumor agent and / or an immunotherapeutic agent and / or an agent antiangiogenic.
- said systemic administration mode according to the invention is chosen from the group comprising or consisting of one of the following modes of administration: subcutaneous, intraperitoneal, intravenous, intra-arterial, intracardiac, intramuscular, intradermal, intranasal, intravaginal, intrarectal, sublingual, oral, intrathecal, intraspinal, epidural, respiratory, cutaneous, transdermal, transmucosal.
- the invention relates to a composition for its above-mentioned use, wherein said composition is formulated for a mode of administration at a therapeutically effective dose, and especially at doses of 0.005 mg / kg / day to 30 mg / ml. kg / day, in particular 0.01 mg / kg / day at 10 mg / kg / day, and more particularly from 0.01 mg / kg / day to 2 mg / kg / day in humans.
- 0.005 mg / kg / day to 30 mg / kg / day means all doses ranging from 0.005 mg / kg / day to 30 mg / kg / day, eg 0.008; 0.01; 0.05; 0.1; 0.5; 1.0; 1.5; 10.0; 10.5; 14.0; 14.5; 20; 20.5; 25; 25.5; 29.5 mg / kg / day.
- the present invention is based on the unexpected results of the
- a siRNA administered by a continuous systemic mode of administration is better than when the same siRNA, formulated in the same solution, is administered by a bolus systemic administration mode, "in bolus” being defined as the administration of the full dose at one time, which dose may be repeated during treatment, for example every day or several times a day.
- the continuous mode of administration is defined as a mode that avoids the effects of peaks and valleys observed on siRNA concentration in blood, serum and various organs when said siRNA is administered as a bolus.
- the purpose of continuous administration is to maintain substantially constant siRNA concentration in the blood and peripheral tissues throughout the siRNA administration period.
- the phrase "maintain substantially constant" means that the concentration of siRNA in the blood and peripheral tissues may vary slightly depending on the metabolism of the individual receiving said composition.
- the administration time may vary from a few hours to several weeks depending on the device used to administer the siRNA.
- This device may be a pump or any composition for a slow release and prolonged release of siRNA.
- the siRNA delivered according to a continuous systemic mode of administration is delivered without the administration being interrupted beyond the time necessary to recharge or exchange the device delivering the siRNA, for example 4 hours, for a period ranging from 2 days to 1 year, for example 2 days, 3 days, 4 days, 5 days, 6 days, 7 days, 8 days, 9 days, 10 days, 11 days, 12 days, 13 days, 14 days days, 15 days, 3 weeks, 1 month, 2 months, 3 months, 4 months, 5 months, 6 months, 9 months, 1 year.
- siRNA delivered in a continuous systemic mode of delivery is delivered in successive cycles, interrupted by a period without treatment ranging from more than 24 hours to a few weeks, each cycle being defined by the administration. systemic continues without interruption greater than the time required to recharge or exchange the device delivering the siRNA, for example 4 hours, and for a period ranging from 2 days to 1 month.
- said mode of continuous systemic administration is subcutaneous.
- the invention relates to a composition for its above-mentioned use, wherein said composition is formulated for a mode of administration, continuously and subcutaneously, at a therapeutically effective dose, and especially at doses of 0.005. mg / kg / day at 30 mg / kg / day, especially 0.01 mg / kg / day at 10 mg / kg / day and more particularly 0.01 mg / kg / day at 2 mg / kg / day.
- the invention relates to a composition for its above-mentioned use, wherein the sequence of one of the strands of said oligonucleotide is different from:
- the invention relates to a composition for its above-mentioned use, wherein said continuous systemic mode of administration is one of the following modes of administration: intraperitoneal, intravenous, intramuscular, intradermal, intranasal, intravaginal, intrarectal, sublingual, oral, intrathecal, AND said at least one siRNA belongs to one of the following four siRNA families: siRNA-AR family, siRNA-VEGF family, siRNA-TSP1 family, FoxP3 siRNA family.
- the invention relates to a composition for its above-mentioned use, wherein said continuous systemic mode of administration is subcutaneous and said at least one siRNA belongs to one of the following four siRNA families: siRNA family AR, siRNA-VEGF family, siRNA-TSP1 family, FoxP3 siRNA family.
- the invention relates to a composition for its above-mentioned use, wherein said pathology is any of the aforementioned primary tumors, or metastases of one of these primary tumors developing in other organs, and said at least one siRNA belongs to one of the following four siRNA families: siRNA-AR family, siRNA-VEGF family, siRNA-TSPl family, FoxP3 siRNA family.
- the invention relates to a composition for its aforementioned use, wherein said pathology is breast cancer, or melanoma, or glioblastoma, or kidney cancer, or liver cancer, or cancer of the liver. bladder, or cancer of the colon or metastases of one of these cancers developing in other organs, or leukemia or myeloma, and said at least one siRNA belongs to one of the following 4 siRNA families: siRNA-AR family, siRNA-VEGF family, siRNA-TSP1 family, FoxP3 siRNA family, and in particular siAR-1 siRNA, or siVEGF-1 siRNA, or siTS-1 siRNA, or siFNA-3 siRNA -l alone or in combination two to two or three to three.
- the invention relates to a composition for its aforementioned use, wherein said pathology is a prostate cancer or metastases of this cancer developing in other organs, and said at least one siRNA belongs to the one of the following 4 siRNA families: siRNA-AR family, siRNA-VEGF family, siRNA-TSP1 family, siRNA FoxP3 family, and in particular siAR-1 siRNA, or siRNA siVEGF-1, or the siRNA siTSPl-1, or siFNA siFoxP3-2, alone or in combination two by two or three to three, and more particularly the siRNA siAR-1.
- the invention also relates to a device providing a means of systemic and continuous administration of a composition formulated for a continuous systemic mode of administration comprising at least one siRNA said siRNA hybridizing with a mRNA encoding or not coding which it induces degradation or of which it inhibits translation, the expression of said mRNA or protein for which code said mRNA being involved in a pathology, and the composition being used for the prevention and / or treatment of said pathology.
- said continuous systemic administration means is in particular an osmotic pump, a syringe pump, an elastomeric pump, a peristaltic pump, a multi-channel pump, a pump controlled by the patient, a "smart” pump, or a "patch” pump, or a polymeric matrix or a hydrogel, or any other biodegradable compound for slowly and continuously releasing the siRNA so that it is systemically distributed in the body.
- Some of these devices can be used in other therapeutic indications, to deliver a therapeutic agent discontinuously, especially in bolus. In the present aspect, they are used to release the aforementioned composition with a substantially constant flow rate and continuously for several days to several weeks or more.
- substantially constant flow rate means that the flow rate may vary slightly depending on the precision of the device used. For example, the variation may be about plus or minus 10% with respect to the set flow rate.
- the device can be mechanical or electronic. It can be worn outside or implanted surgically, for example under the skin, or in the peritoneum, or intramuscularly.
- these devices that can be used in the human clinic are: osmotic pumps, composed of a flexible reservoir surrounded by a compartment containing a salt gel which, by moisturizing, compresses the internal reservoir by forcing the expulsion of the liquid.
- This mechanism which is used, for example, in Duras Durect pumps used in human clinics, is similar to that of Alzet pumps which are only authorized for use in animals;
- automated syringes such as: McKinley T34 or T60, Bodyguard 323, AD syringe driver (Cardinal health), MS drivers (Smiths Medical); - elastomer pumps: the product is contained in a compressible reservoir contained in a balloon exerting a controlled pressure on the inner tank and forcing the expulsion of the liquid such as: Accufuser (WOO YOUNG Medical), Dosi-fuser (medical spirit), Exacta (Gamastech), Myfuser;
- - Peristaltic pumps a flexible tubing is mechanically compressed to deliver the content such as: iPrecio, SP100 (APT instruments);
- the product reservoir adheres directly to the skin and contains an integrated system, without tubing, of administration as for example: CeQurPaQ,
- miniMed 530G miniMed 530G
- Veo medtronics
- Vibe Animas
- the dried oligonucleotides into a device that once put under the skin captures tissue water, and releases the siRNA that is solubilized in the extracellular fluids. It is also conceivable to incorporate the siRNA in a polymeric matrix, a gel or any other compound that releases the siRNA in a slow and prolonged manner over time.
- This device may be a mucosally adhering tablet and releasing the siRNA therethrough.
- said siRNA administered by the aforementioned device is associated with an addressing molecule.
- said siRNA administered by the aforementioned device is not associated with an addressing molecule.
- said at least one oligonucleotide which is administered by said device comprises or consists of one of the siRNAs belonging to the following siRNA families: siRNA-AR family, siRNA-VEGF family, siRNA-TSPl family , FoxP3 siRNA family, and in particular siAR-1 siRNA, or siVEGF-1 siRNA, or siTS-1 siRNA, or siFNA siFNA-3.
- siRNA delivered in a continuous systemic mode of administration is diluted in an aqueous solution containing 154mM NaCl.
- the siRNA delivered according to a continuous subcutaneous systemic administration mode diluted in an aqueous solution containing 154 mM NaCl belongs to one of the following four siRNA families: siRNA-family AR, siRNA-VEGF family, siRNA-TSP1 family, FoxP3 siRNA family, and in particular siAR-1 siRNA, or siVEGF-1 siRNA, or siTS-1 siRNA, or siFNA siFoxP3-1, alone. or in combination two to two or three to three.
- the present invention is based on the unexpected results of the inventors, according to which the concentration of siRNA in serum, in many tissues and / or in tumors is higher when the siRNA is administered systemically while being formulated.
- an acid pH buffer solution only when this same siRNA is formulated in an aqueous solution containing 154 mM NaCl.
- the presence of cations such as Zn2 + or Mg2 + in an aqueous solution of siRNA leads to their degradation and when the siRNA is administered systemically, the presence of such cations in the injection solution reduces the concentration of siRNA in the serum and in the organs.
- the inventors have observed that the addition of cations in an acid pH buffer solution increases the concentration of siRNA in serum, in many tissues and / or in tumors, when said siRNA is administered systemically.
- a buffer solution according to the present invention provides the pH stability of the siRNA dilution solution. Examples of such buffers are given in Table 5.
- the invention thus relates to a composition
- a composition comprising at least one siRNA, said siRNA hybridizing with a mRNA, coding or non-coding, of which it induces the degradation or of which it inhibits the translation, the expression of said mRNA or of the protein for which it encodes being involved in a pathology, the composition being used for the prevention and / or treatment of said pathology, said composition being formulated for a continuous systemic mode of administration in which said at least one siRNA is in a buffer solution at acidic pH.
- the pH of the buffer solution is acidic, ranging from pH
- pH 7 at pH 7, preferably pH 5 at pH 6.5 and preferentially at pH 6.
- the buffer solution is a citrate or histidine buffer at pH 6.
- the present invention is also based on unexpected results of the inventors according to which the concentration of siRNA in serum, in many tissues and / or in tumors is higher when the siRNA is administered continuously systemically by being formulated in a buffer solution.
- a buffer solution at acidic pH containing cations from inorganic or organic salts, that when the same siRNA is formulated in an acidic buffer solution without cations or in a solution of 154 mM NaCl.
- these cations are, for example and without limitation, polyamines, notably putrescine, and / or spermidine, and / or spermine, and / or salts whose cation is chosen from metal cations such as, for example, Zn 2+, Co 2+ , Cu2 +, Mn2 +, Ca2 +, Mg2 +, Fe2 +, the counterion being of any nature, for example a chloride, nitrate, sulfate or carbonate ion.
- the buffer solution contains MgCl 2, ZnCl 2, MnCl 2, or a two-by-two mixture of these salts, or a mixture of the three salts.
- the concentration of each cation is from 0.02 mM to 200 mM, preferably from 0.05 to 100 mM and preferably from 1 to 50 mM.
- the cations are added to a buffer solution which is a citrate buffer or a histidine buffer.
- the pH of this solution is 6.
- siRNA delivered in a continuous systemic mode of administration is diluted in citrate or histidine buffer at pH 6 containing 10 mM MgCl 2.
- the siRNA delivered in a continuous systemic mode of administration, diluted in an acidic buffer containing cations belongs to one of the
- siRNA-AR family siRNA-VEGF family, siRNA-TSPl family, FoxP3 siRNA family, and particularly siARNA siRNA, or siRNA siVEGF-1, or the siRNA siTSPl-1, or siFNA siFoxP3-1, alone or in combination two by two or three to three.
- the present invention is based on the unexpected results of the inventors according to which the concentration of siRNA in serum, many tissues and / or tumors is higher when the siRNA is administered continuously systemically containing a molecule of addressing.
- said composition contains an addressing agent, in particular, said composition contains an addressing agent not covalently coupled to siRNA.
- said composition does not contain an addressing agent.
- said composition is formulated for a continuous systemic mode of administration wherein said at least one siRNA is in an acidic pH buffer solution, said composition contains an addressing agent, in particular, said composition contains an addressing agent not covalently coupled to siRNA.
- said composition is formulated for a continuous systemic mode of administration in which said at least one siRNA is in an acidic pH buffer solution, said composition does not contain an addressing agent.
- this targeting molecule is a CD36 receptor ligand, for example oxidized LDLs, hexarelin or a long-chain fatty acid (more than 16 carbons), or a mixture of these. components two by two or three to three.
- the above-mentioned composition contains oxidized LDLs in a weight: weight ratio of 1 siRNA for 0.01 to 10 oxidized LDLs and preferentially 0.1 to 1, or hexarelin, in a weight: weight ratio. of 1 siRNA for 0.01 to 10 hexarelin, preferably 0.1 to 1.
- the above-mentioned composition contains oxidized LDLs in a weight: weight ratio of 1 siRNA for 0.01 to 10 oxidized LDLs and preferentially 0.1 to 1, or hexarelin, in a weight: weight ratio. from 1 siRNA for 0.01 to 10 hexarelin, preferably 0.1 to 1 and is administered systemically.
- the aforementioned composition is formulated for a continuous systemic mode of administration in which said at least one siRNA is in a buffer solution at acidic pH, in particular in a citrate or histidine buffer, and said composition contains a an addresser not covalently coupled to siRNA, said targeting agent being a CD36 receptor ligand, said CD36 receptor ligand preferably being oxidized LDL, hexarelin, a long chain fatty acid, or a mixing these components two by two or three to three
- the aforementioned composition is formulated for a continuous systemic mode of administration wherein said at least one siRNA is in a citrate buffer and said composition contains an agent for addressing, said addressing agent being oxidized LDLs
- said composition comprises at least one siRNA, said siRNA hybridizing with a mRNA, coding or non-coding, of which it induces the degradation or of which it inhibits the translation, the expression of said mRNA or of the protein for which it being involved in a pathology code, the composition being used for the prevention and / or treatment of said pathology, said siRNA being in a solution containing or not containing vectorization agent.
- the invention relates to an abovementioned composition comprising at least one siRNA, said siRNA being in a solution containing no targeting agent or wherein said siRNA is not associated with a targeting agent.
- the invention relates to an aforementioned composition comprising at least one siRNA, said siRNA being in a solution containing a targeting agent.
- the invention in another aspect, relates to a composition
- a composition comprising at least one siRNA, said siRNA hybridizing with a mRNA, coding or non-coding, of which it induces the degradation or of which it inhibits the translation, the expression of said mRNA or the protein for which he code being involved in a pathology, the composition being used for the prevention and / or treatment of said pathology, said composition being formulated for a systemic mode of administration other than a continuous mode of administration.
- Single or repeated bolus administration or slow infusion administration over a period of minutes to hours are non-limiting examples of a systemic mode of administration other than a continuous mode of administration.
- systemic administration other than a continuous mode of administration of said composition comprising at least one siRNA may be associated with continuous systemic administration of said composition, simultaneously, separately or spread in the weather.
- said composition may be formulated for a systemic mode of administration other than a continuous mode of administration in which said at least one siRNA is in a buffer solution at acidic pH, in particular in a citrate or histidine buffer.
- the acidic pH buffer solution may be supplemented with inorganic or organic salts, in particular salts whose cation is chosen from polyamines, in particular chosen from spermine, spermidine or putrescine or in particular salt whose cation is chosen from metal cations, in particular chosen from salts of zinc, cobalt, copper, manganese, calcium, magnesium or iron, in particular of manganese, zinc, magnesium alone or in combination two to two or three to three
- said composition may contain an addressing agent
- said composition contains an addressing agent, preferably not covalently coupled to siRNA.
- said composition does not contain an addressing agent.
- Said targeting molecule may, for example, be a CD36 receptor ligand, such as oxidized LDL, hexarelin, a long chain fatty acid, or a mixture of these two to two or three to three component
- said siRNA is in a solution that does not contain a vectorization agent or in which said siRNA is not associated with a vectorization agent.
- said siRNA is in a solution containing a vectorization agent.
- the invention relates to a composition for use according to a systemic mode of administration, wherein said siRNA is used in combination with at least one anti-angiogenic agent and / or an anti-tumor agent and / or a immunotherapeutic agent, for simultaneous, separate or spread use over time.
- the present invention is also based on the unexpected results of the inventors according to which the administration of siRNA targeting Thrombospondin-1 or VEGF, by a continuous mode of administration, intracerebral or intrathecal, also makes it possible to deliver these siRNAs effectively and thereby inhibit gene expression of the siRNA target gene.
- the present invention relates to a composition
- a composition comprising at least one siRNA, said siRNA hybridizing with a coding or non-coding mRNA which it induces the degradation or of which it inhibits the translation, the expression of said mRNA or of the protein for which it encodes being involved in a pathology, the composition being used for the prevention and / or treatment of said pathology, said composition being formulated for a continuous, intracerebral or intrathecal mode of administration.
- said composition for its aforementioned continuous and intracerebral use is especially used for the prevention and / or treatment of a brain cancer, in particular a glioblastoma.
- a brain cancer in particular a glioblastoma
- siRNAs are more particularly chosen from one of the following two siRNA families: siRNA-VEGF family, siRNA-TSP1 family, and in particular siVEGF-1 siRNA , or the siRNA siTSPl-1, alone or in combination.
- said composition for its above-mentioned use is formulated for a mode of administration at a therapeutically effective dose in continuous intracerebral or intrathecal, particularly at doses of 0.01 mg / kg / day to 10 mg / kg / day, in particular 0.01 mg / kg / day to 2 mg / kg / day
- the invention relates to a pharmaceutical composition
- a pharmaceutical composition comprising as active substance at least one siRNA, said siRNA hybridizing with a mRNA, coding or non-coding, of which it induces the degradation or of which it inhibits the translation, the expression of said MRNA or of the protein for which it encodes being involved in a pathology, said at least one siRNA being in association with a pharmaceutically acceptable vehicle in a buffer solution at acidic pH, in particular in a citrate or histidine buffer, whether or not supplemented with mineral salts or organic, in particular salt whose cation is chosen from polyamines, especially chosen from spermine, spermidine or putre
- said at least one siRNA is in a solution that does not contain a targeting agent and is associated with an addressing molecule, or is in a solution containing a targeting agent and is associated with a molecule of addressing, or is in a solution containing a targeting agent and is not associated with an addressing molecule, or is in a solution that does not contain a targeting agent and is not associated with an addressing molecule
- the second column indicates the name of the oligonucleotide.
- the third column indicates the composition of the siRNA, constituted by the combination of a strand-type oligonucleotide (resp.
- oligonucleotide 2 (respectively 2b) or an oligonucleotide whose sequence has at least 75% identity with c
- strand-type oligonucleotide 2 (respectively 2b).
- the fourth column indicates the numbering of the oligonucleotide as filed
- the fifth column indicates the sequence in the 5 'to 3' orientation.
- the notation [dT] [dT] is used to indicate the presence of
- the sixth column indicates whether the siRNA constituted by the combination of the two oligonucleotides whose sequence is 100% identical to that of the cell.
- siRNAs shown in Table 1 consist of two single-stranded oligonucleotides whose sequence is 100% identical
- siRNAs furthermore have the following characteristics:
- SiAR-2 siRNA is described in application PCT / FR2002 / 003843.
- the target sequence i.e., the sequence of the mRNA to which the target sequence is described.
- siRNA is present in humans in all mRNAs encoding the androgen receptor, that
- receptor is either wild-type, mutated, or has splice variations leading to partial or complete deletion of the binding domain of the
- SiAR-1 siRNA corresponds to siAR-2 deleted from 2 nucleotides at the 3 'end.
- siRNA siARNA, SiAR-1b, siAR-2, siAR-2b siRNA mRNA target sequences are conserved in many species, including humans, rats, mice, monkeys and dogs. .
- siARNA and SiAR-3b siRNA target sequence is located on the human androgen receptor-encoding mRNA. This target sequence is only partially conserved in other species.
- siARNA and siAR-4b siRNA target sequence is located on the human mRNA coding for the androgen receptor V7 variant, expressed in particular in castration-resistant prostate cancers. This target sequence is only partially conserved in other species.
- siRNA AR-5 is described in application PCT / FR2002 / 003843.
- the target sequence of this siRNA and the AR-5b siRNA is located in the human mRNA encoding the androgen receptor with the T877A mutation frequently found in prostate cancers. This target sequence is only partially conserved in other species. .
- SiVEGF-1 siRNA is described in patent application PCT / FR2002 / 003843.
- the target sequence of siVENA siVEGF-1, siVEGF-1 on the mRNA encoding VEGF is conserved in many species, including humans, rats, mice, monkeys and dogs.
- siTS1-siTS, siTSP1b1, siTSP1-2 and siTSP1-2b have been described in application PCT / EP2010 / 061156.
- the siRNA siTSPl-1 siTSP1b1 target sequence on the Thrombospondin-1 mRNA is conserved in many species including humans, rats, mice, monkeys and dogs.
- siRNA siTSPl-2 and siTSPl-2b on human mRNA encoding Thrombospondin-1 is partially conserved in other species.
- siRNA siTSPl-3, siTSP1-3b, siTSP1-4, siTSP1-4b, siTSP1-5, siTSP1-5b are the siRNAs corresponding to the shRNAs mentioned in the patent application US2011 / 0166199.
- SiFOs siFOXP3-1, siFoxP3-1b, siFOXP3-2 and siFoxP3-2b are new and are described for the first time in this patent application.
- the target sequences of these siRNAs are located on the human mRNA encoding the FoxP3 transcription factor and are conserved in many species including humans, rats, mice, monkeys and dogs.
- Thrombospondin-1 Triggers Cell Migration and Development of Advanced Prostate Tumors. Cancer Res earch 71: 7649-7658.
- Figure 1 Schematic representation of the method of quantification of a siRNA by RT-qPCR. Example of reference range.
- Figure 2 Intravenous injection of siARNA siAR-1 does not inhibit the growth of a prostate tumor xenografted in mice.
- FIG 4 FoxP3-I and FoxP3-2 siRNAs inhibit FoxP3 expression in tumor cells.
- C4-2 prostate cells were transfected with siFoxP3-1 or siFoxP3-2 or with a control siRNA (cont). Two days after transfection, the amount of FoxP3 mRNA in the cells, relative to the amount of Cyclophilin A mRNA considered invariant (delta-delta CT method), was measured and compared to the value measured in the control condition.
- Figure 5 siFNA siFoxP3-2 administered systemically subcutaneously is distributed in serum and various organs.
- Figure 6 Daily administration of siFNA siFoxP3-2 for 3 consecutive days in male mice reduces the amount of FoxP3-encoding mRNA in the testes. Quantification of FoxP3-encoding mRNA, relative to the amount of mRNA encoding cyclophilin A in the testes of mice treated daily for 4 consecutive days in bolus subcutaneously with siRNA siFoxP3-2 diluted or in a citrate buffer containing 10 mM MgCl 2 , administered at a dose of 0.12 mg / kg (denoted siFoxP3-2), or by the vehicle (denoted "cont").
- Figure 7 The simultaneous administration of 3 siRNAs allows their distribution in serum and different organs. Concentration of siRNA siAR-1 (black bars), siTSP1-1 (dark gray bars) and siLuc (light gray bars) in serum, prostate and bone 10 minutes after subcutaneous injection of a mixture of these 3 siRNAs diluted in a 10 mM citrate buffer at pH 6 containing 10 mM MgCl 2. For each siRNA, the serum concentration was considered to be 1 and the organ concentrations were reported at this value in the serum.
- Figure 8 The continuous administration for 4 weeks of siAR-1 allows to maintain substantially constant its serum concentration in monkeys.
- Time concentration of siAR-1 formulated in 154mM NaCl administered continuously subcutaneously for 4 weeks to monkeys (n 4) at a dose of 0.05 mg / kg / day.
- the mean serum concentration measured at the end of the second, third and fourth week of treatment is based on the average of that measured at the end of the first week of treatment.
- Figure 9 Comparison of the pharmacokinetics in the serum of a siRNA after subcutaneous bolus administration or continuously.
- the same animals received a single bolus subcutaneous injection of 0.05 mg / kg of saline-formulated siAR-1 (154 mM NaCl) and the concentration was been measured over time.
- the solid line indicates the average of the values reported in FIG. observes that the serum concentration of siRNA increases rapidly after the bolus injection and that the siRNA is rapidly eliminated, undetectable from the 3rd hour.
- Figure 10 Subcutaneous continuous systemic administration of saline-formulated siRNA inhibits target expression in tissues more efficiently than with bolus administration.
- Osmotic pumps delivering a siRNA dose siTSPl-1 of 0.12 mg / kg / day formulated in saline solution (154 mM NaCl) were implanted subcutaneously for 1 week in mice ("continuous" group, black bars).
- siRNA siTSP1-1 was quantified in different tissues (panel A) and mRNA encoding TSP1 measured in the prostate (panel B).
- a control group (white symbols) received a daily injection of the vehicle (154 mM NaCl).
- Panel B Alzet implantable osmotic pumps were filled either with saline solution (vehicle group, 154mM NaCl, white diamonds), or with siRNA siAR-1 formulated in saline (154 mM NaCl).
- the siRNA concentration was adjusted according to pump flow to deliver a daily dose of 0.02 mg / kg / day (light gray diamonds), 0.2 mg / kg / day (dark gray diamonds) or 2 mg / kg / day (black diamonds).
- Figure 12 Inhibition of bone metastases of prostate cancer by continuous systemic administration of siAR-1.
- Right panel Metastatic load in bone as measured by the expression of human HPRT mRNA in both groups of animals. Each bar represents bone metastatic load in a mouse. "0" indicates that HPRT mRNA was not detected in this animal.
- Figure 14 Immunodetection of the androgen receptor in the prostate of rats treated with siAR-1 by continuous subcutaneous administration for 2 weeks.
- the photos are representative of vehicle-treated rat prostates (154 mM NaCl) "cont", or siAR-1 at doses of 0.1 mg / kg / day or 0.9 mg / kg / day.
- the limit of detection of the ELISA (LLOQ or lower limit of quantification) indicated by a dotted, is 120 pg / ml. Values below this value are arbitrarily indicated as 119 ⁇ g / ml.
- FIG. 17 Immunodetection of TSP1 and blood vessels (CD31 staining) in U87 glioblastoma tumors implanted in nude mouse brain treated for 15 days by continuous intracerebral administration, of siTSPl-1 (denoted siRNA TSP1) or a siRNA control (siRNA-cont), the catheter delivering the siRNA being implanted at a distance from the tumor.
- siTSPl-1 denoted siRNA TSP1
- siRNA-cont siRNA control
- Figure 18 Acrylamide gel electrophoresis analysis of the integrity of a siRNA incubated under different conditions.
- Lanes 1, 5, and 7 siTSP1-1 in aqueous solution
- Lane 2 mixture (1: 1, weight: weight) of oxidized SiTSP1-1 and LDL
- Lane 3 mixture (1: 10, weight: weight) of oxidized siTSP1-1 and LDL
- Lane 4 mixture (1: 1, weight: weight) of siTSP1-1 and hexarelin
- Lane 6 siTSP1-1 in an aqueous solution adjusted to pH 6 containing 0.1 mM ZnCl2
- Lane 8 siTSP1-1 in 10 mM citrate buffer pH 6
- Lane 9-11 siTSPl-1 in 10 mM citrate buffer pH 6 supplemented with 1 mM ZnC12 incubated at 37 ° C for 10 minutes (lane 9), lffle (lane 10) or 6h (lane 11).
- M molecular weight marker (25 bp DNA ladder Invitrogen).
- mice Groups of adult mice were given a subcutaneous bolus injection of the SiTSP-1 siRNA at a dose of 0.12 mg / kg formulated either in a solution containing 154 mM NaCl (gray bar control group) or in an aqueous solution. containing 0.165 mM ZnC12 (black bars).
- the siRNA concentration measured in the serum and prostate of these different groups of mice was measured 20 minutes after injection and compared to the value of the control group considered as 1.
- Figure 20 Concentration of siAR-1 in the serum and various organs depending on the formulation of the siRNA administered.
- siRNA siAR-1 Concentration of siAR1 in serum or tissues of mice injected subcutaneously with siRNA siAR-1 formulated in one of the following solutions: 154 mM NaCl (NaCl, control group); 10 mM citrate buffer pH 6 (Cit); lOmM pH 6 citrate buffer supplemented with 0.1 ml of MnCl 2 (Cit / Mn), or 0.1 mM of MgCl 2 (Cit / Mg), or 0.1 mM of ZnCl 2 (Cit / Zn), or 0.1 ml of ZnCl 2 and 0.1 mM MnC12 (Cit / ZnMn), or O.lmM of ZnCl2 and O.
- Panel A Measured values in the serum of male animals given the indicated treatment.
- Panel B measured values in the prostate (dark gray bars) or spleen (light gray bars) of male animals given the indicated treatment.
- Panel C Measured values in the spleen of female animals that received the indicated treatment.
- Figure 21 A mixture of the following 3 siRNAs: siAR-1, siTSP1-1 and siLuc was prepared either in saline (154 mM NaCl) or 10 mM citrate buffer pH 6 containing 7.5 mM MgCl 2 and administered subcutaneously continued for 3 days to mice bearing 4T1 tumors, each siRNA being delivered at a rate of 2 mg / kg / day.
- the siRNA has been assayed in serum and different organs, including 4T1 tumors.
- the concentrations of each siRNA, measured in serum, organs (panel A) and tumors (panel B), were reported to that measured for the siRNA considered in the serum of control group mice (154 mM NaCl).
- FIG. 22 siRNA siRNA siAR-1, at the dose of 0.12 mg / kg, formulated in a solution of 154 mM NaCl (control group, denoted NaCl) or in a 10 mM citrate buffer pH 6 added either with (siRNA: hexarelin, 1: 0.2 weight: weight) Cit / Hexarelin), either oxidized LDL (siRNA: LDL oxidized, 1: 1: weight: weight) (Cit / LDL) was administered subcutaneously to groups of adult mice. The concentration of siRNA measured in the serum (panel A), prostate (panel B, dark gray bars) or spleen (panel B, light gray bars) of these different groups of mice was measured 20 minutes after injection and reported to that of the control group (NaCl).
- Figure 23 The concentration in serum, tissues and tumors of a systemically administered and continuous subcutaneous siRNA is increased when formulated in citrate buffer containing oxidized LDL.
- Osmotic pumps were implanted subcutaneously into 22RV1 tumor-bearing mice in order to deliver systemically and continuously for 2 days 2 mg / kg / day of SiAR-1 and 0.2 mg / kg / day of oxidized LDL, formulated either in 154 mM NaCl in 10 mM citrate buffer at pH 6.
- the concentrations of siAR-1 in serum, organs and tumors measured after injection of the citrate buffer composition were reported to those measured after injection of the NaCl composition.
- RT-qPCR quantitative PCR
- a specific stem-loop primer with 8 protruding nucleotides is synthesized, the 8 nucleotides being complementary to the 8 nucleotides of the 3 'end of the siRNA (antisense) guide strand.
- the product obtained is amplified by PCR using two primers, one hybridizing with the region corresponding to the loop of the reverse transcription primer.
- the 12 nucleotides at 3 'of the second primer having a DNA sequence corresponding to the 12 nucleotides of the 5' end of the newly synthesized cDNA after reverse transcription of the siRNA guide strand. Detection of the amplification is carried out continuously by the degradation of a Taqman fluorescent probe or by incorporation of SybrGreen.
- FIG. 1 shows schematically the RT-qPCR method and an exemplary range showing the relationship between the number of copies present in the reaction and the CT (cycle threshold or amplification threshold) obtained.
- the biological samples in which siRNAs are quantified come from different sources:
- RNAs extracted from known weight tissue fragments thought to contain siRNA are extracted by conventional methods such as by the phenol-chloroform method (trizol extraction). After extraction, they are diluted in water;
- RNAse inhibitor a known volume of serum is diluted in water containing an RNAse inhibitor at 1/100 ° or more diluted if the siRNA concentration is very high.
- the CT values obtained for each sample are compared with those obtained for the range. This makes it possible to calculate the number of siRNA copies present in the assayed sample.
- the values are then reported firstly to the amount of total transcribed reverse RNA, then to the tissue weight from which the RNAs were extracted or to the serum volume, and the final results are expressed in moles / L (M) considering that the density of all tissues is 1 g / cm 3 .
- the cell lines used in the examples are cell lines derived from prostate tumors in humans, resistant to castration and expressing the androgen receptor (lines C4-2 and 22RV1), mouse mammary tumors (4T1), or of human glioblastoma U87.
- the tumors are obtained by subcutaneous injection of tumor cells into the flank of Nude mice (22RV1, C4-2 tumors) or BalB / C mice (4T1 tumors). Only animals on which tumor uptake is found are included in the study and randomized to receive treatment or control treatment.
- Bolus siRNA injections are given once a day, 5 days a week.
- U87 cells were implanted into the Nude mouse brain parenchyma by stereotaxic injection. All siRNAs are diluted in water containing 154mM NaCl or in the indicated buffer.
- the osmotic pumps eg Alzet pumps
- the osmotic pumps are implanted subcutaneously on the back of the mice on the opposite side of the tumor if the mouse is wearing one.
- the osmotic pump is implanted under the skin and a catheter placed at the outlet of the pump is connected to a device fixed on the cranial box by a cement and delivering the compound into the brain. distance from the previously implanted tumor.
- the animals are sacrificed, the serum, the tumors and different tissues are dissected, the extracted RNAs and the siRNAs present in these RNAs are quantified. All the experimental protocols used have been validated by the French ethics committees and regulatory authorities. They are implemented in such a way as to limit the number of animals used and to avoid unnecessary suffering.
- siRNAs used are those of Table 1.
- siRNA Control a siRNA that does not hybridize with any known mRNA (siRNA Control) was used.
- the sequence of this siRNA is:
- siRNA targeting luciferase a gene that does not exist in mammals, was also used.
- the sequence of this siRNA is:
- siRNAs are diluted in saline solution (water for injection supplemented with 154mM
- NaCl NaCl
- concentration is calculated taking into account the hourly volume delivered by the pump, as indicated by the manufacturer (Alzet).
- the pump is filled sterilely and implanted under the skin of treated animals (mice, rats, monkeys).
- the cathether placed at the outlet of the pump releases its contents either under the skin or in another location in order to obtain intrathecal or intracerebral administration.
- the pumps are held in place for a few days and up to 4 weeks according to the protocol indicated.
- Example 2 Absence of inhibition of tumor growth by intravenously injected siRNAs in bolus.
- mice 9 week old male nude mice were subcutaneously xenografted on the flank with 22RV1 cells. After tumor initiation and randomization, mice received daily intravenous injection of siRNA control or siAR-1 at a dose of 0.12 mg / kg for 13 days. The tumor volume was measured daily. The results are shown in Figure 2. It is found that the IV injection of siAR-1 has no effect on the growth of tumors.
- Example 3 It is not necessary for siRNA to target mRNA expressed in the body for distribution. A siRNA directed against firefly luciferase siLuc, at a dose of 2 mg / kg / day, formulated in a 154 mM NaCl solution was administered to mice subcutaneously continuously for 3 days using implanted osmotic pumps. Quantification of the siRNA siLuc in the serum and various organs shown in Figure 3 shows that it is efficiently distributed systemically even though there is no target mRNA of this siRNA in these tissues.
- Example 4 Identification of siRNA inhibiting FoxP3 and distributing in tissues in vivo.
- C4-2 cells were transfected with a siRNA control or siFNA siFoxP3-1 or siFoxP3-2. 48 hours after transfection, the cells were lysed, the extracted RNAs and FoxP3 expression measured by RT-qPCR. The values are normalized by the expression of the RNA encoding cyclophilin-A (delta delta CT method). The results are shown in Figure 4 which shows that both FoxP3-l and FoxP3-2 siRNAs inhibit FoxP3 expression.
- the siFNA siFoxP3-2 is distributed in serum and different organs and inhibits the expression of FoxP3.
- mice received daily for 4 consecutive days subcutaneously or 0.12 mg / kg of siFNA siFoxP3-2 formulated in citrate buffer at pH 6 containing 10 mM MgCl2, or only this buffer (control group).
- Figure 5 shows that siFoxP3-2 is systemically distributed in serum and in different organs
- Figure 6 shows that in the testes, siFoxP3-2 strongly inhibits the expression of FoxP3-encoding mRNA relative to the group. control.
- the siFNA siFoxP3-2 Administered in the absence of a vectorization agent, the siFNA siFoxP3-2 is therefore capable of systemically distributing itself in vivo and of inhibiting the expression of its target gene.
- Example 5 Simultaneous administration of 3 siR As allows their systemic distribution in serum and various organs.
- the siRNA siAR-1, siTSP1-1 and siLuc were diluted in 10 mM citrate buffer at pH 6 containing 10 mM MgCl 2.
- the mixture was administered subcutaneously to mice such that the mice received a dose of 0.12 mg / kg each of the 3 siRNAs.
- the mice were sacrificed 10 minutes after injection and each siRNA was assayed separately in serum and different tissues. It is observed that the 3 siRNAs are present in the serum and in the various organs tested (FIG. 7).
- the administration of a cocktail of several siRNAs therefore allows their simultaneous systemic distribution in different tissues.
- Example 6 Administration of a siRNA formulated in saline solution subcutaneously continuous.
- the siRNAs are formulated in saline solution (154 mM NaCl).
- Osmotic pumps delivering a dose of SiAR-1 siRNA of 0.05 mg / kg / day formulated in 154 mM NaCl solution were implanted subcutaneously for 4 weeks in Cynomolgus monkeys.
- the serum siRNA concentration was measured weekly for the duration of the treatment. It is observed that the serum concentration varies by less than 20% compared to the first measurement (considered to have the value 1) ( Figure 8).
- subcutaneous bolus injection of the 0.05 mg / kg dose results in rapid elimination ( Figure 9) which, if repeated over time, for example daily, leads to to an effect of peaks and valleys which is avoided by continuous administration.
- mice were injected subcutaneously daily for 4 days with siTS-1 siTS, 0.12 mg / kg / day, formulated in saline (154 mM NaCl), or the same siRNA formulated in the same solution but administered in a controlled manner. continue for 4 days with an osmotic pump at the dose of 0.2 mg / kg / day.
- siRNA siTSP1-1 distributes in multiple organs at comparable levels after continuous or bolus subcutaneous administration (Figure 10A).
- Administration of siTSP1-1 produces better tissue inhibition of TSP1 mRNA expression when siRNA is administered continuously than when administered as a bolus ( Figure 10B).
- mice were grafted into mice. Once the tumor was noted, the mice were treated by administering siAR-1 siRNA formulated in saline (154 mM NaCl) at different doses or by vehicle.
- siRNA was administered subcutaneously, either discontinuously, by daily injection, or continuously, by implantation of an osmotic pump for 1 month.
- 22RV1 cells were implanted in Nude mice. Once the tumor was detected, Alzet pumps administering 0.2 mg / kg / day of SiAR-1 siRNA formulated in saline (154 mM NaCl), or the vehicle alone were implanted for 3 weeks. At the end of treatment, the bones (tibia) were recovered to quantify siAR-1, and the mRNAs of human origin coding for the androgen receptor and the HPRT.
- the continuous systemic administration of a siRNA therefore makes it possible to deliver it in the metastases of a cancer developing in the bone, to inhibit the expression of the target gene of the siRNA in the bone and to limit the implantation and / or the development of metastases.
- Osmotic pumps delivering SiAR-1 siRNA formulated in saline (154 mM NaCl) were implanted subcutaneously in mice for 1 month or in rats for 2 weeks.
- This administration to mice at a dose greater than or equal to 0.2 mg / kg (FIG. 13) or to rats at a dose greater than or equal to 0.1 mg / kg (FIG. 14) effectively inhibits the protein expression of the androgen receptor. in the prostate of these animals.
- Prostate-specific antigen or PSA is detected in the serum of mature male monkeys, even in the absence of prostatic pathology.
- Continuous subcutaneous administration of siARNA siAR-1 for 4 weeks at a dose of 5 mg / kg / day leads to a decrease in PSA expression in animal serum, below the detection limit of the ELISA test used. for the assay ( Figure 16).
- the continuous subcutaneous administration of a siRNA in monkeys therefore makes it possible to distribute it systemically in numerous organs where it exerts its gene expression inhibitory effect.
- Example 7 Inhibition of TSP1 expression in glioblastoma by continuous intracerebral administration of siRNA formulated in saline solution (154 mM NaCl).
- Female nude mice were grafted orthotopically with U87 glioblastoma cells. The animals were implanted with an osmotic pump placed subcutaneously in the back, the output of the pump being connected to a catheter delivering in the brain, at a distance from the tumor, a control siRNA or the siRNA siTSPl-1 contained in the pump, at a rate of 2mg / kg of brain weight / day. After 8 days, the mice were sacrificed, and the expression of TSP1 detected by immuno fluorescence on brain sections. The results are shown in Figure 17.
- TSP1 is a protein that inhibits the formation of blood vessels (angiogenesis).
- angiogenesis angiogenesis
- Example 8 An acid buffer prevents the degradation of a siRNA in the presence of cations.
- siRNA is degraded in the presence of ZnCh in an aqueous solution whose pH has been adjusted to 6.
- a citrate buffer at pH 6 preserves the siRNA.
- siRNA siTSPl-1 degradation was measured after formulation of this siRNA under different conditions.
- the integrity of siTS1-siRNA was verified by deposition on an acrylamide gel of an amount equivalent to 300 ng of siRNA from a siRNA solution that underwent the following treatments:
- siTSP1-1 incubation for 10 minutes, hourly or 6 hours at 37 ° C. of siTSP1-1 in a solution of 1 mM ZnCl2 in a 10 mM Citrate buffer at pH 6.
- siRNA is degraded when incubated in an aqueous solution of ZnCl2. This degradation does not occur in citrate buffer at pH 6 containing up to 6 times more ZnC12. No degradation of siRNA is observed when mixed in water with oxidized LDL or hexarelin.
- siRNA in an aqueous solution containing ZnCl2 reduces its concentration in the serum and its distribution in the tissues.
- siTS-1 siRNA formulated either in 154 mM NaCl or in water containing 0.165 mM ZnCl 2 and administered subcutaneously to mice at a dose of 0.12 mg / kg.
- the siRNA concentration measured in serum and tissues is reduced when the siRNA is formulated in an aqueous solution containing cations compared to the results obtained when the same siRNA is administered at the same dose and in the same way but formulated in saline (154 mM NaCl) ( Figure 19).
- the concentration in serum and tissues of a systemically administered siRNA is increased when formulated in citrate buffer and even more in citrate buffer containing different cations.
- the formulation of SiAR-1 siRNA in 10 mM Citrate buffer pH 6 increases the concentration of this siRNA in the serum (FIG. 20A). This concentration is further increased in serum and tissues when 10 mM citrate buffer pH 6 is supplemented with ZnCl2, MnCl2.
- the concentration of a systemically administered, continuous siRNA is increased when formulated in a citrate buffer containing cations.
- siRNAs siAR-1, siTSP1-1 and siLuc
- Each siRNA was administered at a dose of 2 mg / kg / day.
- the mixture was formulated either in a solution of 154 mM NaCl or in 10 mM Citrate buffer pH 6 containing 10 mM MgCl 2 .
- the concentration of each siRNA in serum, tumors and different organs was measured and the values measured when the siRNA had been formulated in citrate-MgCl 2 buffer was reported to the measured values with the administration of solution-formulated siRNA.
- saline 154 mM NaCl
- the results reported in Figs. 21A and 21B show that the formulation of siRNAs in citrate-MgCl 2 buffer increases by up to more than 250 their systemic distribution in tissues compared to their saline formulation.
- mice received a subcutaneous injection of siAR-1 at a dose of 0.12 mg / kg formulated either in saline solution (154 mM NaCl) or in 10 mM citrate buffer pH 6 containing hexarelin (siRNA ratio: Hexarelin; weight: 1: 0.2), or in 10 mM citrate buffer pH6 containing oxidized LDL (siRNA ratio: oxidized LDL, weight: weight, 1: 1).
- the concentration of siAR-1 was measured and related to the measured concentration when the siRNA was formulated in saline (154 mM NaCl) in the same tissue.
- the results observed in the serum are shown in FIG. 22A, in the prostate and the spleen in FIG. 22B. They show that the addition of hexarelin or oxidized LDL increases the concentration of siRNA in serum or tissues.
- osmotic pumps were implanted in mice bearing 22RV1 tumors, the pumps delivering for 3 days continuously 2mg / kg / day of siAR-1 formulated in saline solution (NaCl 154mM), or 2mg / kg / day of siAR-1 and 0.2 mg / kg / day of oxidized LDL formulated in 10mM citrate buffer pH 6.
- the siRNA and the oxidized LDL were simply mixed in the citrate buffer, without additional manipulation.
- the concentrations of siAR-1 formulated in citrate buffer containing oxidized LDL measured in serum, tissues or tumors were related to the value measured in the same tissue when the siRNA was formulated in saline (154 mM NaCl). It can be seen in FIG. 23 that the presence of oxidized LDL increases the concentration of siAR-1 in serum tissues and tumors.
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| FR1660439A FR3058061A1 (fr) | 2016-10-27 | 2016-10-27 | Nouvelle utilisation d'oligonucleotides double brin |
| PCT/FR2017/052214 WO2018078225A1 (fr) | 2016-10-27 | 2017-08-08 | Utilisation d'un sirna pour le traitement des cancers |
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| KR102321426B1 (ko) * | 2017-02-21 | 2021-11-05 | 올릭스 주식회사 | 남성형 탈모 표적 유전자의 발현을 억제하는 비대칭 siRNA |
| US20210340536A1 (en) * | 2018-09-26 | 2021-11-04 | AUM LifeTech, Inc. | 2' fana modified foxp3 antisense oligonucleotides and methods of use thereof |
| TW202028222A (zh) * | 2018-11-14 | 2020-08-01 | 美商Ionis製藥公司 | Foxp3表現之調節劑 |
| EP3845646A1 (fr) * | 2019-12-30 | 2021-07-07 | Secarna Pharmaceuticals GmbH & Co. KG | Oligonucléotide antisens modifié pour l'inhibition de l'expression foxp3 |
| CN116234908A (zh) * | 2020-09-25 | 2023-06-06 | 印地安纳大学理事会 | 促进foxp3s的吗啉代物 |
| KR20230172544A (ko) * | 2021-04-20 | 2023-12-22 | 퍼듀 리서치 파운데이션 | 면역기능적 담체, 사용 방법, 및 항종양 면역요법으로서의 조성물 물질 |
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| US20040220128A1 (en) * | 1995-10-26 | 2004-11-04 | Sirna Therapeutics, Inc. | Nucleic acid based modulation of female reproductive diseases and conditions |
| US20050148530A1 (en) * | 2002-02-20 | 2005-07-07 | Sirna Therapeutics, Inc. | RNA interference mediated inhibition of vascular endothelial growth factor and vascular endothelial growth factor receptor gene expression using short interfering nucleic acid (siNA) |
| WO2003066097A2 (fr) * | 2002-02-08 | 2003-08-14 | Vlaams Interuniversitair Instituut Voor Biotechnologie Vzw | Nouvelle cible pour inhiber l'angiogenese |
| WO2005019422A2 (fr) * | 2003-08-13 | 2005-03-03 | The Board Of Trustees Of The University Of Illinois | Extinction du recepteur tgf-beta de type ii par des arnsi |
| US20050265927A1 (en) * | 2004-05-17 | 2005-12-01 | Yale University | Intranasal delivery of nucleic acid molecules |
| EP1934348B1 (fr) * | 2005-10-11 | 2018-05-02 | Ben-Gurion University Of The Negev Research And Development Authority | Compositions permettant d'effectuer un silençage de l'expression de vdac1 et des utilisations de celles-ci |
| EP2064350B1 (fr) * | 2006-11-27 | 2013-01-02 | Ludwig Institute for Cancer Research Ltd. | Expression de foxp3 par des cellules cancereuses |
| WO2009002193A1 (fr) * | 2007-06-27 | 2008-12-31 | Auckland Uniservices Limited | Polypeptides et polynucléotides pour l'artémine et les ligands apparentés, et leurs procédés d'utilisation |
| WO2009086558A1 (fr) * | 2008-01-02 | 2009-07-09 | Tekmira Pharmaceuticals Corporation | Compositions et procédés améliorés pour la délivrance d'acides nucléiques |
| EP2283870A1 (fr) * | 2009-07-31 | 2011-02-16 | Centre National de la Recherche Scientifique | Oligonucléotides inhibant la migration cellulaire |
| EP2725103A3 (fr) * | 2011-11-14 | 2016-01-06 | Silenseed Ltd | Procédés et compositions pour le traitement du cancer de la prostate |
| IL292159B1 (en) * | 2012-12-05 | 2026-04-01 | Alnylam Pharmaceuticals Inc | PCSK9 iRNA compositions and methods of using them |
| CN107148410B (zh) * | 2014-08-18 | 2020-04-28 | 日油株式会社 | 用于核酸递送的阳离子脂质 |
| EP3237619B8 (fr) * | 2014-12-25 | 2021-03-10 | Guangzhou Ribobio Co., Ltd. | Compositions et procédés pour inhiber l'expression de adamts-5 et adam17 |
| BR112017014090A2 (pt) * | 2014-12-29 | 2018-03-06 | Bonac Corporation | composição, e, métodos para produção de uma composição e estabilização de uma molécula de ácido nucleico. |
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