EP4013511A1 - Nanoparticules pour le traitement du cancer par rayonnement de radiofréquence - Google Patents
Nanoparticules pour le traitement du cancer par rayonnement de radiofréquenceInfo
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- EP4013511A1 EP4013511A1 EP20772361.0A EP20772361A EP4013511A1 EP 4013511 A1 EP4013511 A1 EP 4013511A1 EP 20772361 A EP20772361 A EP 20772361A EP 4013511 A1 EP4013511 A1 EP 4013511A1
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- European Patent Office
- Prior art keywords
- nanoparticle
- tumor
- nanoparticles
- treatment
- radiofrequency
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K41/00—Medicinal preparations obtained by treating materials with wave energy or particle radiation ; Therapies using these preparations
- A61K41/0038—Radiosensitizing, i.e. administration of pharmaceutical agents that enhance the effect of radiotherapy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/24—Heavy metals; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K41/00—Medicinal preparations obtained by treating materials with wave energy or particle radiation ; Therapies using these preparations
- A61K41/0052—Thermotherapy; Hyperthermia; Magnetic induction; Induction heating therapy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
- A61K47/54—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound
- A61K47/547—Chelates, e.g. Gd-DOTA or Zinc-amino acid chelates; Chelate-forming compounds, e.g. DOTA or ethylenediamine being covalently linked or complexed to the pharmacologically- or therapeutically-active agent
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/69—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit
- A61K47/6921—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere
- A61K47/6927—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere the form being a solid microparticle having no hollow or gas-filled cores
- A61K47/6929—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere the form being a solid microparticle having no hollow or gas-filled cores the form being a nanoparticle, e.g. an immuno-nanoparticle
- A61K47/6931—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere the form being a solid microparticle having no hollow or gas-filled cores the form being a nanoparticle, e.g. an immuno-nanoparticle the material constituting the nanoparticle being a polymer
- A61K47/6935—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere the form being a solid microparticle having no hollow or gas-filled cores the form being a nanoparticle, e.g. an immuno-nanoparticle the material constituting the nanoparticle being a polymer the polymer being obtained otherwise than by reactions involving carbon to carbon unsaturated bonds, e.g. polyesters, polyamides or polyglycerol
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
Definitions
- Nanoparticles for the treatment of cancer by radiofrequency radiation are nanoparticles for the treatment of cancer by radiofrequency radiation.
- the present disclosure relates to a method for treating tumors.
- the invention relates to a novel therapeutic use of nanoparticles as a sensitizing agent for radiofrequency radiation.
- the invention relates more particularly to the use of nanoparticles in combination with radiofrequency radiation for the treatment of tumors, the radiofrequencies inducing hyperthermia of said tumor comprising the nanoparticles in the patient.
- the radio waves easily penetrate the various tissues and deep areas can be reached.
- the waves locally induce ionic agitation which triggers molecular frictional movements responsible for thermal elevation which is transmitted to adjacent tissues leading to an increase in the internal temperature of the tissues leading to cell damage or even death.
- the radiofrequency can therefore be used either to induce localized hyperthermia in the tumor via a specific probe leading to the ablation of tumor cells, or to make the tumor more sensitive to certain treatments.
- tumor cells are more sensitive to changes in temperature than healthy cells, treatment with radiofrequency radiation does not make it possible to target a very specific area.
- agents making it possible to absorb the energy of the waves and to increase the local hyperthermia can be used.
- These agents, called sensitizing agents are for example silicon or gold nanoparticles or carbon nanotubes (Tamarov KP et al. 2014, Scientific Reports, 4: 7034; Rejinov NJ et al. 2015, Journal of Controlled Release, 204: 84-97).
- the agents are inserted into the tumors and thus allow, following treatment by radiofrequency radiation, a local increase in temperature specifically in the tumor cells.
- these agents have many drawbacks. They are large in size and do not specifically target tumor cells. These agents must therefore be injected into the tumor. Moreover, these agents are not very biocompatible and difficult to eliminate. In addition, these agents are not suitable for intravenous administration.
- nanoparticles comprising a non-conductive and non-magnetic matrix functionalized at the surface by metal cations such as gadolinium can interact favorably with radiofrequencies and cause a local increase in the temperature, in particular cancer cells comprising these nanoparticles and thus block tumor growth.
- a nanoparticle for use in the treatment of a tumor by radiofrequency radiation in a patient inducing hyperthermia of said tumor characterized in that said nanoparticle comprises a non-conductive and non-matrix. magnetic and metal cations having an atomic number Z greater than 40, said nanoparticle being administered before said treatment with radiofrequency radiation.
- said matrix is a polysiloxane matrix.
- said nanoparticle for the use as described above comprises at least one chelating agent, preferably DOTA, DTPA, DOTAGA or one of its derivatives intended for complexing metal cations.
- the metal cations of said nanoparticle represent more than 10% of the mass of said nanoparticle, preferably less than 50% of the mass of said nanoparticle, even more preferably, the metal cations are placed on the surface of said matrix.
- Said metal cations are preferably gadolinium or bismuth.
- the nanoparticle for the use as described above has a size of less than 10 nm, preferably less than 5 nm.
- the nanoparticle is used for the treatment of a tumor, preferably solid, and advantageously selected from the group consisting of a renal tumor, a lung tumor, a hepatic tumor, a breast tumor, a tumor. bones, said nanoparticle preferably being in a form suitable for intravenous, intratumoral or inhalation administration.
- the invention also relates to a radiofrequency hyperthermic sensitizing agent comprising said nanoparticle as described above.
- FIG. 1 represents the transition temperature of deionized water (black square), of a saline medium (triangle), of a saline medium in the presence of albumin (inverted triangle) and of the AGulX solution (diamond) under treatment with radiofrequency radiation at 27 MHz.
- FIG. 2 represents the transition temperature of deionized water, of a medium comprising yttrium, gadolinium, bismuth, terbium, AGulX under treatment with radio frequency radiation at 27 MHz.
- FIG. 3 shows MRI images of mice before and after intratumoral injection of AGulX saline solution.
- FIG. 4 shows thermal images of a mouse during treatment with radiofrequency radiation for 1, 5 and 10 min.
- FIG. 5 is a graph (A) representing the size of the tumor at different times after the treatment with radiofrequency radiation of the different groups of control mice (black circle), injected intratumorally with a solution comprising AGulX (round ), injected intratumorally with a solution comprising AGulX followed by radiofrequency treatment (square), (B) representing the size of the tumor after radiofrequency treatment of mice injected intratumorally with saline solution followed by radiofrequency treatment (square), and of mice injected intratumorally with a solution comprising AGulX followed by treatment with radiofrequency radiation (round).
- Fig. 6 is a graph (A) representing the size of the tumor at different times after the treatment with radiofrequency radiation of the different groups of control mice (black circle), injected intratumorally with a solution comprising AGulX (round ), injected intratumorally with a solution comprising AGulX followed by radiofrequency treatment (square), (B) representing the size of the tumor after radiofrequency treatment of mice injected intratumorally with saline solution followed by radio
- FIG. 6 is a graph showing the survival at different times after the Lewis lung carcinoma transplant of the different groups of mice injected intratumorally with saline solution (black square), injected intratumorally with saline followed by radiofrequency treatment (inverted triangle), injected intratumorally with a solution comprising AGulX (round), injected intratumorally with a solution comprising AGulX followed by radiofrequency treatment (triangle).
- nanoparticles comprising a matrix of non-magnetic and non-conductive polymer and metal cations having an atomic number greater than 40 leads to a decrease in tumor growth in vivo in mice.
- the nanoparticles according to the invention are deposited in the tumor and will act as a sensitizing agent for radiofrequency treatment.
- the nanoparticles present in the tumor will absorb a large amount of energy and cause greater energy dissipation leading to local hyperthermia in the tumor and elimination of tumor cells.
- hyperthermia is meant temperatures above body temperature, in particular above 37 ° C in humans.
- hyperthermia is meant a local body temperature of between 37.5 ° C and 45 ° C, preferably 39 and 45 ° C. Hyperthermia will make it possible to eliminate or damage the target cells or to sensitize them for other treatment, in particular radiotherapy or chemotherapy.
- the present invention thus relates to nanoparticles comprising a non-magnetic and non-conductive matrix and metal cations having an atomic number Z greater than 40 for use in the treatment of a tumor by radiofrequency radiation in a patient , said nanoparticle being administered before said treatment with radiofrequency radiation.
- Nanoparticles are particles on the order of one nanometer.
- the nanoparticles are administered to the subject by the intravenous route.
- the nanoparticles must be small enough to be able to target tumor cells via the vascular system and be eliminated quickly by the kidneys.
- the nanoparticles have a diameter of less than 20 nm, preferably less than 10 nm.
- the nanoparticles are particles whose average diameter is between 1 and 20 nm, preferably between 1 and 10 nm and even more preferably between 2 and 5 nm, or alternatively between 1 and 6 nm.
- nanoparticles of very small diameter for example between 1 and 10 nm, preferably between 2 and 5 nm.
- the size distribution of the nanoparticles is for example measured using a commercial particle size analyzer, such as a Malvern Zetasizer Nano-S particle size analyzer based on PCS (Photon Correlation spectroscopy). This distribution is characterized by an average hydrodynamic diameter.
- a commercial particle size analyzer such as a Malvern Zetasizer Nano-S particle size analyzer based on PCS (Photon Correlation spectroscopy). This distribution is characterized by an average hydrodynamic diameter.
- mean diameter is meant the harmonic mean of the diameters of the particles. A method for measuring this parameter is also described in ISO 13321: 1996.
- the nanoparticles according to the invention are nanoparticles comprising a non-magnetic and non-conductive organic or hybrid matrix (organic-inorganic).
- non-conductive matrix is meant an insulating matrix, that is to say a matrix which does not conduct electricity.
- the matrix does not contain conductive materials such as metals in their metallic form (at zero oxidation).
- non-magnetic matrix is meant a matrix that is not attracted to the magnetic field.
- the nanoparticle according to the invention comprises a non-ferromagnetic and / or non-super-paramagnetic matrix, and preferably does not comprise or less than 5% of iron, cobalt or nickel of the mass of the matrix.
- the nanoparticle comprises a non-magnetic and non-conductive matrix which is a biocompatible polymer such as polyethylene glycol, polyethylene oxide, polyacrylamide, biopolymers, polysaccharides or polysiloxane, preferably polysiloxane.
- a biocompatible polymer such as polyethylene glycol, polyethylene oxide, polyacrylamide, biopolymers, polysaccharides or polysiloxane, preferably polysiloxane.
- the nanoparticles as described above further comprise metal cations having an atomic number greater than 40 making it possible to act as sensitizing agents to radiofrequencies.
- the metal cations are chosen from heavy metals, preferably from the group consisting of: Pt, Pd, Sn, Ta, Zr, Tb, Tm, Ce, Dy, Er, Eu, La, Nd, Pr, Lu , Yb, Bi, Hf, Ho, Sm, In and Gd, or a mixture of these.
- the metal cations are Bi and / or Gd.
- the nanoparticle for the use according to the invention has a mass ratio of metal cation, in particular of Bi and / or Gd, of more than 10%, preferably between 10 and 50%.
- the metal cations can be coupled to the matrix by covalent couplings or trapped by non-covalent bond, for example by encapsulation or hydrophilic / hydrophobic interaction or using a chelating agent.
- the metal cations are located at the surface of the matrix of the nanoparticle.
- the nanoparticles which can be used according to the invention comprise chelating agents which are covalently linked to the matrix and make it possible to complex the metal cations.
- the chelating agents are grafted to the surface of the matrix of the nanoparticle so as to complex the metal cations at the surface of the matrix.
- the nanoparticle for use according to the invention comprises a polysiloxane matrix, a chelating agent covalently bonded to said matrix and a metal cation complemented by the chelating agent.
- the chelating agent is chosen from the following products:
- DOTA 1, 4,7,10-tetraazacyclododecane-N, N ', N ”, N'” - teracetic acid
- DTPA diethylene triamine penta-acetic acid
- EDTA 2,2 ', 2 ", 2"' - (ethane-1, 2-diyldinitrilo) tetraacetic acid
- EGTA ethylene glycol-bis (2-aminoethyl ether) acid) - N, N, N ', N'-tetraacetic
- BAPTA 1-, 2-bis (o-aminophenoxy) ethane-N, N, N', N'-tetraacetic acid
- NOTE 1, 4,7- acid triazacyclononan-1, 4,7-triacetic)
- DOTAGA 2,4,7,10- tris (carboxymethyl) -1
- cyclam derivatives such as TETA (1, 4,8,11- tetraazacydotetradecane-N, N ', N'', N "' - tetraacetic acid), TETAM (1, 4,8,11- tetraazacyclotetradecane-N, N ', N'',N"' - tetrakis (carbamoylmethyl)), TETP (1, 4,8,11- tetraazacyclotetradecane-N, N ', N'', N "' - tetrakis (methylene phosphonate)), and mixtures thereof,
- the chelating agent is chosen from DOTA, DTPA, EDTA, EGTA, BAPTA, NOTA, DOTAGA, DTPABA, DOTAM, DOTP, NOTP and their mixtures.
- the chelating agent is DOTA, DTPA, DOTAGA or one of its derivatives, preferably DTPA, DOTAGA or one of its derivatives such as by example DOTAM or NOTAM.
- the ratio of metal cations per nanoparticle for example the ratio of rare earth elements, for example gadolinium (optionally chelated with DOTAGA) per nanoparticle is between 3 and 100, preferably between 5 to 20, typically about 10.
- the chelating agent is advantageously selected from those whose complexing constant log (KC1) is greater than 15, preferably 20.
- complexing agents lanthanides which may be mentioned are those comprising a unit of diethylene triamine penta acetic acid (DTPA), of 1, 4,7,10-tetraazacyclododecane-1, 4,7,10-tetra acetic acid (DOTA) or of ′ 1,4,7,10-tetraazacyclododecance-1, glutaric anhydrous-4,7,10-triacetic acid (DOTAGA).
- the nanoparticles which can be used according to the invention are obtained by the following method:
- At least one coating layer (shell) comprising polysiloxanes for example by a sol gel method
- the core-shell precursor nanoparticle into an aqueous solution in which the grafting agent is in sufficient quantity to dissolve the metal oxide core and to complex the metal cation so that the average diameter of the nanoparticle thus obtained is reduced to a value of less than 10 nm, preferably less than 5 nm, for example between 1 and 5 nm.
- nanoparticles obtained according to the method described above do not include a core encapsulated by at least one coating. Further details on the synthesis of these nanoparticles are given in the following section.
- the chelating agents can be grafted on the surface of the polysiloxane particles or directly inserted within the POS matrix. Some or all of these chelating agents are intended to complex metal cations (e.g. gadolinium, bismuth).
- these nanoparticles can be modified (function) at the surface by hydrophilic compounds (PEG) and / or loaded differently to adapt their bio-distribution within the organism and / or allow a good cell labeling, in particular for monitoring cell therapy.
- PEG hydrophilic compounds
- They can for example be functionalized at the surface by grafting molecules targeting lung tissue, or, due to their passage through the blood, by grafting molecules targeting certain areas of interest of the body, in particular areas tumor.
- the functionalization can also be carried out by compounds comprising another active principle and / or luminescent compounds (fluorescein).
- fluorescein a radiosensitizing agent
- neutron therapy as a radioactive agent for brachytherapy treatments
- PDT photodynamic therapy
- vectoring molecules with a therapeutic effect a radioactive agent for vectoring molecules with a therapeutic effect.
- ultrafine nanoparticles Another characteristic of these ultrafine nanoparticles is the maintenance of the rigid character of the objects and of the overall geometry of the particles after injection.
- This high three-dimensional rigidity can be ensured by a polysiloxane matrix, where the majority of silicones are linked to 3 or 4 other silicon atoms via an oxygen bridge.
- the combination of this rigidity with their small size makes it possible to increase the relaxivity of these nanoparticles for intermediate frequencies (20 to 60 MHz) compared to commercial compounds (complexes based on Gd-DOTA for example), but also for frequencies greater than 100 MHz present in new generation high-field MRIs.
- the nanoparticles according to the invention have a relaxivity n per metal cation M n + which is greater than 5 mM 1 .s 1 (of M n + ion). preferably 10 mM 1 .s 1 (of M n + ion). for a frequency of 20 MHz.
- they have a relaxivity n per nanoparticle of between 50 and 5000 mM 1 .s 1 .
- these nanoparticles have a relaxivity n per M n + ion at 60 MHz which is greater than or equal to the relaxivity n per M n + ion at 20 MHz.
- the nanoparticles which can be used according to the invention are polysiloxane nanoparticles chelated with gadolinium.
- they are polysiloxane nanoparticles chelated with gadolinium, which do not include a gadolinium oxide core and whose diameter is between 1 and 10 nm, preferably between 2 and 8 nm.
- Such nanoparticles are in particular the nanoparticles known as AGulX of general formula I below: n in which PS is a polysiloxane matrix and n is between 5 and 50, preferably between 5 and 20, and in which the hydrodynamic diameter is between 1 and 10 nm, for example between 2 and 8 nm, in particular 5 nm .
- the AGulX nanoparticles can have a mass of about 15 kDa ⁇ 10 kDa.
- AGulX nanoparticles can also be described by formula II below: (GdSÎ3-8C24-34N5-80i5-3oH4o-6o, 1-10 hhOJn
- a person skilled in the art can easily manufacture nanoparticles used according to the invention.
- POS matrix several techniques can be used, derived from those initiated by Stoeber (Stoeber, W; J. Colloid Interf Sci 1968, 26, 62). It is also possible to use the method employed for the coating as described in Louis et al. (Louis et al., 2005, Chemistry of Materials, 17, 1673-1682) or international application WO 2005/088314. In practice, the synthesis of ultrafine nanoparticles is for example described in Mignot et al. Chem. Eur. J. 2013, 19: 6122-6136.
- a core / shell type nanoparticle is formed with a lanthanide oxide core (by modified polyol route) and a polysiloxane shell (by sol / gel), this object for example has a size around 10 nm ( preferably 5 nanometers).
- a lanthanide oxide core of very small size can thus be produced in an alcohol by one of the methods described in the following publications: P. Perriat et al., J. Coll. Int. S ci, 2004, 273, 191; O. Tillement et al., J. Am. Chem. Soc, 2007, 129, 5076 and P. Perriat et al., J. Phys. Chem.
- Chelating agents specific for the targeted metal cations are grafted onto the surface of the polysiloxane; it is also possible to insert a part of it inside the layer but the control of the formation of the polysiloxane is complex and the simple external grafting gives, at these very small sizes, a sufficient grafting proportion.
- the nanoparticles are separated from the synthesis residues by a dialysis or tangential filtration method, on a membrane comprising pores of suitable size.
- the heart is destroyed by dissolution (for example by modifying the pH or by providing complexing molecules in the solution).
- This destruction of the core then allows a scattering of the polysiloxane layer (according to a collapse or slow corrosion mechanism), which ultimately makes it possible to obtain a polysiloxane object of complex morphology, the characteristic dimensions of which are of the order of magnitude of the thickness of the polysiloxane layer, that is to say much smaller than the objects so far developed.
- Removing the core thus makes it possible to go from a particle size of about 5 nanometers in diameter to a size of about 3 nanometers.
- this operation makes it possible to increase the number of metal cations (e.g.
- gadolinium per nm in comparison with a theoretical polysiloxane nanoparticle of the same size but comprising metal (e.g. gadolinium) only at the surface.
- the number of metal cations for a nanoparticle size can be evaluated using the M / Si atomic ratio measured by EDX.
- nanoparticles it is possible to graft targeting molecules, for example by means of coupling by peptide bond on an organic constituent of the nanoparticle, as described in Montalbetti, CAGN, F alga B. Tetrahedron 2005, 61, 10827-10852. It is also possible to use a coupling method using “click chemistry” Jewett, JC; Bertozzi, CR Chem. Soc. Rev. 2010, 39, 1272-1279, and involving groups of the type: -N3, -CN, -CoCH, or one of the following groups: ⁇ ; ⁇
- the nanoparticle according to the invention comprises a chelating agent having an acid function, for example DOTA.
- the acid function of the nanoparticle is activated, for example using EDC / NHS (1-ethyl-3- (3-dimethylaminopropyl) carbodiimide / N-hydrosuccinimide) in the presence of a quantity appropriate targeting molecules.
- the nanoparticles thus grafted are then purified, for example by tangential filtration.
- the nanoparticles according to the present invention are obtained by a synthesis method (“one-pot synthesis method") comprising the mixture of at least one hydroxysilane or alkoxysilane which is negatively charged at a pH physiological and at least one chelating agent chosen from polyaminopolycarboxylic acids with:
- the molar ratio A of neutral silanes to negatively charged silanes is defined as follows: 0 ⁇ A ⁇ 6, preferably 0.5 ⁇ A ⁇ 2;
- the molar ratio B of positively charged silanes to the charged silanes negatively is defined as follows: 0 ⁇ B ⁇ 5, preferably 0.25 ⁇ B ⁇ 3;
- the molar ratio C of the positively charged and neutral silanes to the negatively charged silanes is defined as follows: 0 ⁇ C ⁇ 8, preferably 1 ⁇ C ⁇ 4.
- the "one pot" synthesis method comprises the mixture of at least one alkoxysilane which is negatively charged at a physiological pH, said alkoxysilane being chosen from APTES-DOTAGA, TANED, CEST, and their mixtures with:
- alkoxysilane which is neutral at physiological pH
- said alkoxysilane being chosen from TMOS, TEOS and their mixtures, and / or
- the molar ratio A of neutral silanes to negatively charged silanes is defined as follows: 0 ⁇ A ⁇ 6, preferably 0.5 ⁇ A ⁇ 2;
- the molar ratio B of positively charged silanes to the negatively charged silanes is defined as follows: 0 ⁇ B ⁇ 5, preferably 0.25 ⁇ B ⁇ 3;
- the molar ratio C of the positively charged and neutral silanes to the negatively charged silanes is defined as follows: 0 ⁇ C ⁇ 8, preferably 1 ⁇ C ⁇ 4.
- the "one pot" synthesis method comprises the mixture of APTES-DOTAGA which is negatively charged at physiological pH with:
- alkoxysilane which is neutral at physiological pH
- said alkoxysilane being chosen from TMOS, TEOS and their mixtures, and / or
- the molar ratio A of neutral silanes to negatively charged silanes is defined as follows: 0 ⁇ A ⁇ 6, preferably 0.5 ⁇ A ⁇ 2;
- the molar ratio B of positively charged silanes to the negatively charged silanes is defined as follows: 0 ⁇ B ⁇ 5, preferably 0.25 ⁇ B ⁇ 3;
- the molar ratio C of the positively charged and neutral silanes to the negatively charged silanes is defined as follows: 0 ⁇ C ⁇ 8, preferably 1 ⁇ C ⁇ 4.
- the nanoparticles as described above are administered into the tumor or near the tumor region of a patient. They can also be administered by intravenous, intramuscular injection or by inhalation. The radiofrequency radiation treatment of the patient then induces hyperthermia of said tumor and reduces tumor growth.
- Nanoparticles as defined above are used as a sensitizing agent to radiofrequency radiation to target tumor cells specifically.
- the radiofrequency radiation sensitizing agents as used in the present application refer to a composition which makes it possible to induce a greater absorption of quantity of energy from a radiofrequency signal thus creating an increase in the higher temperature in the zone comprising this composition.
- the sensitizing agents in the present application are characterized by their ability to target and bind to a target cell, here a tumor cell, and to make the target cell more sensitive to the increase in temperature induced by radiofrequency radiation.
- the present invention thus relates to the nanoparticles as defined above for use in the treatment of a tumor in a patient undergoing treatment with radiofrequency radiation.
- patient or “subject” is meant any member of the animal kingdom, preferably a mammal or a human including, for example, a subject having a tumor.
- treatment refers to any act which aims to improve the state of health of a patient, such as therapy, prevention, prophylaxis, and the delay of a disease. In some cases, these terms refer to the amelioration or eradication of a disease or symptoms associated with the disease. In other embodiments, these terms refer to the reduction in the spread or aggravation of disease resulting from the administration of one or more therapeutic agents to a subject afflicted with such disease.
- nanoparticles are used for the treatment of solid tumors, in particular brain cancer (primary and secondary, glioblastoma, etc.), hepatic cancers (primary and secondary), pelvic tumors (cancer of the cervix, prostate cancer, anorectal cancer, colorectal cancer), upper aerodigestive tract cancers, lung cancer, esophageal cancer, breast cancer, pancreatic cancer.
- solid tumors in particular brain cancer (primary and secondary, glioblastoma, etc.), hepatic cancers (primary and secondary), pelvic tumors (cancer of the cervix, prostate cancer, anorectal cancer, colorectal cancer), upper aerodigestive tract cancers, lung cancer, esophageal cancer, breast cancer, pancreatic cancer.
- the present invention relates to a method of treating tumors with radiofrequency radiation comprising the steps of administering an effective dose of nanoparticles as described above into the tumor of a patient and exposing the tumor to radiation. radio frequency.
- an effective dose of nanoparticles reference is made to the amount of nanoparticles as described above which, administered to a patient, is sufficient to be localized in the tumor and to induce hyperthermia following treatment with radiofrequency radiation.
- This dose is determined and adjusted according to factors such as the age, sex and weight of the subject.
- the administration of the nanoparticles as described above can be carried out intratumoral, subcutaneous, intramuscular, intravenous, intradermal, intraperitoneal, oral, sublingual, rectal, vaginal, intranasal, by inhalation or by transdermal application.
- composition is in a pharmaceutical form suitable for a chosen administration.
- the nanoparticles are administered intravenously and the nanoparticles will specifically target tumors, by passive targeting, for example by increasing the effect of permeability and retention.
- a single dose of between 20 mg / kg and 500 mg / kg of nanoparticles is administered intravenously into a subject.
- the nanoparticles are administered into the patient's tumor such that the nanoparticles are present at a concentration between 0.1 mg / L and 50 mg / L, preferably 1 and 10 mg / L in the region of the tumor which will be treated by radiofrequency.
- Nanoparticles act as sensitizers and are used to target tumor cells specifically. The emission of radio waves near tumor cells comprising the nanoparticles then leads to the elimination of the tumor cells.
- Radiofrequency radiation induces oscillating movements of the charged species at frequencies in the range from 3 kHz to 300 GHz. Following these electromagnetic excitations, ionic agitation triggers molecular frictional movements responsible for thermal elevation in cells. The heat rise then leads to the elimination of cells.
- Radiofrequency radiation is generated between a transmission head and a reception head different from the transmission head.
- the transmitting and receiving head are arranged on either side of the tumor site or the patient's body and the radio frequency signal is emitted to induce hyperthermia in target cells, such as tumor cells.
- target cells such as tumor cells.
- Many devices are known to emit radio waves.
- the treatment with radiofrequency radiation according to the invention is preferably a non-invasive treatment.
- non-invasive as used in this application means that no needle, wire, electrodes or other objects are inserted into the patient or the tumor of the patient to be treated.
- the radio frequency signal is emitted such that the target tumor reaches a temperature between 37.5 and 45 ° C, preferably between 42 and 44 ° C.
- the radiofrequency treatment is carried out at a frequency less than 1 GHz between 1 and 1000 MHz, preferably between 1 and 100 MHz.
- the radiofrequency signal must be high enough to make it possible to induce hyperthermia of the tumor cells and thus to induce their cell death or at least the damage of the target cells.
- the radiofrequency treatment can be carried out by simple exposure or successive exposures to radiofrequency radiation.
- the duration of each exposure to radiofrequency radiation is between 1 and 60 min, preferably between 10 and 60 min.
- the frequency and the time of the radiofrequency treatment can be optimized, for example according to the patient, the type of cancer, the gender, the size of the individual.
- the temperature of the target area can be measured using a device well known to those skilled in the art.
- the temperature can be measured using an infrared camera, a non-contact thermometer, a thermal probe or by thermal magnetic resonance imaging. These probes are thermally and electrically inert to radiofrequency treatment.
- the treatment with radiofrequency radiation can comprise one exposure to radiofrequency radiation per week, or several exposures per week.
- the hyperthermia induced by radiofrequency radiation will also make cancer cells more sensitive to radiotherapy or anti-cancer drugs.
- the nanoparticles as described above for use in the treatment of a tumor with radiofrequency radiation can thus be used in combination with one or more anti-cancer agents or with radiotherapy.
- Chemotherapy agents can be DNA replication inhibitors such as DNA binding agents, in particular alkylating or intercalating drugs, anti-metabolite agents such as polymerase or topoisomerase I inhibitors or II, or anti-mitotic agents such as alkaloids.
- Non-limiting examples of chemotherapy agents are: 5-FU, oxaliplatin, cisplatin, carboplatin, irinotecan, cetuximab, erlotinib, docetaxel, doxorubicin and paclitaxel.
- Immunotherapy agents are compounds which indirectly or directly enhance or stimulate the immune response against tumor cells.
- the nanoparticles can also be used in addition as a radio-sensitizing agent for radiotherapy, as a photosensitizing agent for phototherapy or as an agent for beam therapy.
- the nanoparticles used for the treatment of tumors by radiofrequency are also used as a contrast agent or an imaging agent for visualizing the tumor in vivo, by medical imaging allowing for example monitoring of the therapy.
- the term “contrast agent” is understood to mean any product or composition used in medical imaging with the aim of artificially increasing the contrast allowing a particular anatomical structure to be visualized (for example certain tissues or organs) or a pathological anatomical structure (eg tumors) relative to neighboring or non-pathological structures.
- imaging agent means any product or composition used in medical imaging with the aim of creating a signal making it possible to visualize a particular anatomical structure (for example certain tissues or organs) or a pathological anatomical structure (for example tumors). compared to neighboring or non-pathological structures. How the contrast or imaging agents work depends on the imaging techniques used.
- Medical imaging is preferably chosen from the following techniques: nuclear magnetic resonance, X-ray scanners, fluorescence imaging, by SPECT scintigraphy, by PET scintigraphy, more preferably the tumor is visualized in vivo by resonance nuclear magnetic, in particular in dynamic magnetic resonance imaging (MRI) (ie DCE for Dynamic Contrast Enhanced sequence).
- MRI dynamic magnetic resonance imaging
- a subject of the present invention is also a pharmaceutical composition
- a pharmaceutical composition comprising a nanoparticle as defined above and a pharmaceutically acceptable vehicle, a carrier substance and / or a adjuvant for use in the treatment of a tumor with radiofrequency radiation in a patient as previously described.
- Pharmaceutically acceptable vehicles, a carrier substance and / or an adjuvant are those conventionally used.
- the AGulX nanoparticles (50 mM per bottle) are obtained by Dr. O. Tillement via Dr. V. Lysenko.
- the nanoparticles are dissolved in a physiological solution at a concentration of 20 mM (per Gd).
- Radio-frequency electromagnetic radiation is generated by a UVCH-60 medical device (MedTeeko Ltd., Russia) operating at 27 MHz with a power of up to 60 W.
- Lewis lung carcinoma transplant is performed by homogenizing Lewis lung carcinoma tumor tissue in a sterile solution of Medium 199 (Merck).
- the donor animals are sacrificed, and pieces of tumor are excised without a necrotic site and then homogenized in medium 199.
- the tumor mass is diluted in medium 199 and administered intramuscularly into the right hip of C57BI / 6 mice at a volume of 0.3 mL.
- mice are divided into four groups, a group of control mice injected with saline solution (A), a group of mice injected with saline solution and treated with radiofrequency radiation for 10 min (B), a group of mice injected with AGulX and not treated with radiofrequency radiation (C), and a group of mice injected with AGulX and treated with radiofrequency radiation (D) (Table 1).
- the saline solutions and AGulX (0.2 ml) are injected intramuscularly six days after inoculation of the tumor, when the tumor reaches a size of 70 ⁇ 15 mm 3 .
- Table 1 description of the different groups of mice 4.
- MRI monitoring of the biodistribution of AGulX is carried out using a Bruker BioSpec 7 T MRI scanner (Briker BioSpin GmbH, Germany) with a gradient system of 105 mT / m using ParaVision 5.0 software.
- Figure 3 shows the MRI images of a mouse before and after the intratumoral injection of the AGulX solution. AGulX nanoparticles are seen in the tumor region at least one hour after injection.
- Group B and D mice are treated with radiofrequency radiation with a power of about 10 W for 10 min.
- Thermal monitoring of mice during treatment with radiofrequency radiation is performed with a Seek Thermal thermal imager.
- a maximum temperature of around 43-45 ° C in the tumor is measured 5 to 10 minutes after the start of the radiofrequency treatment ( Figure 4).
- the survival of the injected mice is then monitored 65 days after the Lewis lung carcinoma transplant. Mouse survival is improved in mice injected with AGulX and treated with radiofrequency radiation ( Figure 6).
- the AGulX nanoparticles act as hyperthermia sensitizers following treatment with radiofrequency radiation.
- the AGulX nanoparticles injected intratumorally are located in the region of the tumor for at least 1 hour after the injection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1909203A FR3099883A1 (fr) | 2019-08-14 | 2019-08-14 | Nanoparticules pour le traitement du cancer par rayonnement de radiofréquence |
| PCT/FR2020/051466 WO2021028642A1 (fr) | 2019-08-14 | 2020-08-13 | Nanoparticules pour le traitement du cancer par rayonnement de radiofréquence |
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| EP4013511A1 true EP4013511A1 (fr) | 2022-06-22 |
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| EP20772361.0A Withdrawn EP4013511A1 (fr) | 2019-08-14 | 2020-08-13 | Nanoparticules pour le traitement du cancer par rayonnement de radiofréquence |
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| Country | Link |
|---|---|
| US (1) | US20220288206A1 (fr) |
| EP (1) | EP4013511A1 (fr) |
| FR (1) | FR3099883A1 (fr) |
| WO (1) | WO2021028642A1 (fr) |
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| FR2959502B1 (fr) | 2010-04-30 | 2012-09-07 | Nanoh | Nanoparticules ultrafines a matrice polyorganosiloxane fonctionnalisee et incluant des complexes metalliques ; leur procede d'obtention et leurs applications en imagerie medicale et/ou therapie |
| CN119894523A (zh) * | 2022-08-18 | 2025-04-25 | 梅克布朗公司 | 官能化聚合物的医疗用途 |
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| FR2867180B1 (fr) * | 2004-03-02 | 2006-06-16 | Univ Claude Bernard Lyon | Nanoparticules hybrides comprenant un coeur de ln203 porteuses de ligands biologiques et leur procede de preparation |
| FR2959502B1 (fr) | 2010-04-30 | 2012-09-07 | Nanoh | Nanoparticules ultrafines a matrice polyorganosiloxane fonctionnalisee et incluant des complexes metalliques ; leur procede d'obtention et leurs applications en imagerie medicale et/ou therapie |
| FR2989280B1 (fr) * | 2012-04-13 | 2017-02-24 | Univ Claude Bernard Lyon | Nanoparticules ultrafines comme agent de contraste multimodal |
| EP3634497A2 (fr) | 2017-06-09 | 2020-04-15 | Nh Theraguix | Procédé de synthèse de nanoparticules de silice |
| EP3424533A1 (fr) | 2017-07-05 | 2019-01-09 | Nh Theraguix | Procédés de traitement de la dépendance |
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2019
- 2019-08-14 FR FR1909203A patent/FR3099883A1/fr not_active Withdrawn
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2020
- 2020-08-13 EP EP20772361.0A patent/EP4013511A1/fr not_active Withdrawn
- 2020-08-13 WO PCT/FR2020/051466 patent/WO2021028642A1/fr not_active Ceased
- 2020-08-13 US US17/635,116 patent/US20220288206A1/en not_active Abandoned
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| Publication number | Publication date |
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| FR3099883A1 (fr) | 2021-02-19 |
| WO2021028642A1 (fr) | 2021-02-18 |
| US20220288206A1 (en) | 2022-09-15 |
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