WO2004040312A2 - Proceded de dosage du ngf pour le diagnostic in vitro du cancer du sein et utilisation en therapie - Google Patents
Proceded de dosage du ngf pour le diagnostic in vitro du cancer du sein et utilisation en therapie Download PDFInfo
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- WO2004040312A2 WO2004040312A2 PCT/FR2003/003193 FR0303193W WO2004040312A2 WO 2004040312 A2 WO2004040312 A2 WO 2004040312A2 FR 0303193 W FR0303193 W FR 0303193W WO 2004040312 A2 WO2004040312 A2 WO 2004040312A2
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/22—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against growth factors ; against growth regulators
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/55—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having seven-membered rings, e.g. azelastine, pentylenetetrazole
- A61K31/553—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having seven-membered rings, e.g. azelastine, pentylenetetrazole having at least one nitrogen and one oxygen as ring hetero atoms, e.g. loxapine, staurosporine
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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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P5/00—Drugs for disorders of the endocrine system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
- C07K2317/73—Inducing cell death, e.g. apoptosis, necrosis or inhibition of cell proliferation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/435—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans
- G01N2333/475—Assays involving growth factors
- G01N2333/48—Nerve growth factor [NGF]
Definitions
- the present invention relates to the field of oncology. More particularly, the subject of the present invention is a method of diagnosing breast cancer in a human patient by determining the presence of nerve growth factor (NGF) in a biological sample originating from this patient, said method being able to be used both in early diagnosis, screening, therapeutic monitoring, prognosis, as in the diagnosis of relapses in the context of breast cancer.
- NGF nerve growth factor
- the present invention also relates to therapy.
- breast cancer is the leading cause of death from cancer in industrialized countries. It is estimated that the minimum size of a tumor detectable by mammography is 1 cm. Breast cancer develops slowly. However, this small tumor has an evolutionary past of 8 years on average at diagnosis. The etiology of breast cancer is not well defined. Family predispositions have been highlighted. Age is the most important risk factor. Thus, the risk increases by 0.5% per year of age in Western countries. Other risk factors are known such as the number of pregnancies and the age of the first pregnancy, breastfeeding, the age of puberty and menopause, estrogen treatments after the onset of menopause, stress. and nutrition.
- the test available and used in mass screening for breast cancer is an imaging technique: mammography. Thanks to this technique, mortality due to breast cancer has greatly decreased (30% reduction in mortality), which underlines the importance of tumor screening in terms of public health.
- screening techniques suffer from a number of handicaps. Mammography requires high-performance equipment and qualified personnel, which is expensive for mass screening.
- characterization of a tumor in terms of malignancy is carried out after its discovery by histological methods in specialized laboratories.
- a set of parameters such as the size of the tumor, its grade Histopathology, associated inflammation and lymph node invasion are used to decide on therapy and to estimate the prognosis of the disease.
- the molecular phenomena leading to the development of breast cancer involve changes in the structure and expression of oncogenes (such as ras) and tumor suppressor genes such as p53.
- oncogenes such as ras
- tumor suppressor genes such as p53.
- the growth of tumor cells in most breast cancers is dependent on estrogen hormones (estradiol and progesterone) and growth factors that control proliferation, migration and apoptosis.
- These growth factors either stimulate or inhibit proliferation, migration and differentiation of tumor cells so as to act in concert to promote the growth of cancer and metastases.
- insulin-like growth factors, transforming growth factor ⁇ (TGF- ⁇ ), and fibroblast growth factors (FGF) can all stimulate the proliferation of breast cancer cells, while the inhibitor breast-derived growth factor (MDGI) and transforming growth factor ⁇ (TGF- ⁇ ) inhibit their growth.
- MDGI inhibitor breast-derived growth factor
- TGF- ⁇ transforming growth factor ⁇
- NGF neurotrophic family of polypeptides
- a major biological function of NGF is the maintenance and survival of post-mitotic neurons, which makes it an important candidate for the treatment of neurodegenerative diseases.
- NGF also has significant effects on non-neuronal cells. So, for example, it is an autocrine factor for B cell survival (Torcia, M., et al., 1996, Cell, 85, 345-356).
- NGF tumor necrosis factor
- NGF neurotrophic factor
- the Applicant has now surprisingly demonstrated that breast cancer cells themselves produce NGF, while corresponding normal breast epithelial cells do not produce it, so that NGF can be used as a marker. tumor or as a therapeutic target.
- the presence of the invention first relates to a method of diagnosing breast cancer by determining the presence of NGF in biological samples from patients suspected of having breast cancer.
- the method of the invention therefore makes it possible to diagnose breast cancer by a simple test consisting in searching for the presence of NGF in a biological sample taken from a patient.
- the Applicant has unexpectedly shown that cancer cells produce NGF, while the corresponding non-cancer cells are incapable thereof, as will be demonstrated in more detail below.
- the determination of the presence of NGF in the sample makes it possible to conclude that the pathology sought, the absence of NGF making it possible to conclude that there is no pathology.
- NGF NGF mRNA
- the determination of the presence of NGF by direct detection of NGF constitutes a particular embodiment of the invention.
- direct detection of NGF is meant the detection of NGF itself in the biological sample.
- Direct detection of NGF in the biological sample can be implemented work by any means known to those skilled in the art, such as for example by immunological test or by mass spectrometry, which constitutes a particular embodiment of the invention.
- the immunological test can be any test widely known to those skilled in the art involving immunological reactions, namely reactions between NGF and a specific binding partner for NGF.
- the specific NGF liaison partners are any partner likely to bind to the NGF.
- antibodies, antibody fractions, receptors and any other protein capable of binding to NGF are either polyclonal antibodies or monoclonal antibodies.
- the polyclonal antibodies can be obtained by immunization of an animal with NGF, followed by the recovery of the antibodies sought in purified form, by sampling the serum of said animal, and separation of said antibodies from the other constituents of the serum, in particular by affinity chromatography on a column on which is fixed an antigen specifically recognized by the antibodies, in particular NGF.
- Monoclonal antibodies can be obtained by the hybridoma technique, the general principle of which is recalled below.
- an animal generally a mouse
- NGF neutrophil-derived factor receptor 1
- B lymphocytes of which are then capable of producing antibodies against said antigen.
- These antibody-producing lymphocytes are then fused with "immortal" myeloma cells (murine in the example) to give rise to hybridomas.
- a selection is then made of cells capable of producing a particular antibody and of multiplying indefinitely.
- Each hybridoma is multiplied in the form of a clone, each leading to the production of a monoclonal antibody whose recognition properties with respect to the tumor antigen of interest can be tested, for example by ELISA, by immunoblotting in one or two dimensions, in immunofiuorescence, or using a biosensor.
- Monoclonal antibodies as well selected, are subsequently purified in particular according to the affinity chromatography technique described above.
- anti-NGF antibodies are known and are available in particular in the catalog of R&D Systems or Santa Cruz.
- the specific NGF binding partners may be labeled for the revelation of the NGF / binding partner binding when the binding partner is used as detection reagent, and therefore for the direct detection of NGF in the biological sample.
- binding partners By labeling the binding partners is meant the binding of a marker capable of directly or indirectly generating a detectable signal.
- a marker capable of directly or indirectly generating a detectable signal.
- the enzymes which produce a detectable signal for example by colorimetry, fluorescence, luminescence, such as horseradish peroxidase, alkaline phosphatase, ⁇ -galactosidase, glucose-6-phosphate dehydrogenase, • chromophores such as fluorescent, luminescent compounds, colorants,
- radioactive molecules such as P, S or I
- fluorescent molecules such as alexa or phycocyanins.
- Indirect systems can also be used, such as for example ligands capable of reacting with an anti-ligand.
- the ligand / anti-ligand pairs are well known to those skilled in the art, which is the case for example of the following couples: biotin / streptavidin, hapten / antibody, antigen / antibody, peptide / antibody, sugar / lectin, polynucleotide / complementary to the polynucleotide. In this case, it is the ligand which carries the binding agent.
- the anti-ligand can be detectable directly by the markers described in the preceding paragraph or be itself detectable by a ligand / anti-ligand.
- immunological tests as defined above, mention may be made of the “sandwich” methods such as ELISA, IRMA and RIA, the so-called competition methods and the direct immunodetection methods such as immunohistochemistry, immunocytochemistry, Western-blot and Dot-blot.
- Mass spectrometry can also be used for the direct detection of NGF in the biological sample.
- the principle of spectrometry is widely known to those skilled in the art and is described for example in Patterson, S., 2000, Mass spectrometry and proteomics. Physiological Genomics 2, 59-65.
- the biological sample previously treated or not is passed through a mass spectrometer and the spectrum obtained is compared with that of NGF.
- An example of prior treatment of the sample consists in passing it over an immunosensor support comprising one of the NGF binding partners, for example an antibody directed against NGF.
- the biological sample used for the direct detection of NGF which may contain NGF as such, may be constituted by biological fluid or a tissue originating from the biopsy of the tumor or metastases of the patient considered.
- biological fluid mention may be made of blood, bone marrow, milk, cerebrospinal fluid, urine and effusions.
- the biological fluid which constitutes a particular embodiment of the invention, may require special treatment.
- the biological fluid can contain NGF as such, or it can contain circulating tumor cells which contain NGF, and possibly circulating tumor cells which are capable of secreting NGF.
- the biological fluid is previously treated to isolate the circulating tumor cells contained in said fluid.
- isolating the circulating tumor cells is meant to obtain a cell fraction enriched in circulating tumor cells.
- Fluid treatment to isolate circulating tumor cells can be performed by cell sorting in a flow cytometer, by enrichment on Ficoll, by enrichment with magnetic beads covered with specific antibodies, or by any other specific enrichment method known to those skilled in the art.
- the circulating tumor cells can be isolated using a cell separation technique on Ficoll associated with depletion of blood cells using anti-CD45 antibodies coupled to magnetic beads ( Dynal Biotech ASA, Norway).
- the direct detection of NGF can then be carried out directly from circulating tumor cells isolated from the biological fluid, for example by immunocytochemical labeling of these cells with an anti-NGF antibody, after having deposited the circulating tumor cells on a slide by cytospin.
- Direct detection of NGF can also be carried out directly in circulating tumor cells using the flow cytometry method as described in Mciezeau P, Ronot X, Le Noan-Merdrignac G, Ratinaud MH, Flow cytometry for the study of the normal or pathological cell (Volume I), Eds Medsi-MacGrawhill.
- said circulating cells can be treated under conditions allowing blocking of the NGF inside said cells.
- Such processing is described for example in Intracellular Flow Cytometry, Applied reagents and Techniques, pp 1-21, BD Pharmingen.
- the detection of NGF is then done after permeability of the cell membrane to bring in the specific binding partners of NGF.
- Direct detection of NGF from circulating cells can also be carried out using the method described in patent application WO03 / 076942 filed by one of the Applicants.
- the direct detection of NGF in tumor cells can also be carried out in the culture medium of said cells after having grown them under conditions such that they secrete NGF.
- These culture conditions are conventional conditions such as 37 ° C. in a humid atmosphere and at 5% CO 2 .
- the biological sample to be tested is tissue originating from the biopsy of the tumor or from the metastases of the patient, which constitutes an embodiment particular of the invention, the direct detection of NGF is carried out directly on the sections obtained, without prior treatment of said tissue.
- Another mode of detecting the presence of NGF consists in the culture, in the presence of the biological sample, of cells sensitive to NGF, which constitutes a particular embodiment of the invention.
- cells sensitive to NGF any cell stimulated in the presence of NGF (growth, apotosis, etc.).
- NGF growth, apotosis, etc.
- the biological sample which can be used for the detection of the presence of NGF by culturing cells sensitive to NGF can be any sample as described above.
- the biological sample can consist of biological fluid, if necessary previously treated to isolate the circulating tumor cells, themselves which can then be cultured under conditions such that they secrete NGF, as described above.
- Another mode of detecting the presence of NGF in biological samples consists in detecting the NGF mRNA in said sample, which constitutes another embodiment of the invention.
- It can for example be implemented by hybridization reactions between the target mRNA and a nucleic acid capable of binding to the target mRNA.
- nucleic acid is intended to mean oligonucleotides, deoxyribonucleic acids and ribonucleic acids, as well as their derivatives.
- oligonucleotide designates a sequence of at least 2 nucleotides
- modified nucleotide is meant, for example, a nucleotide comprising a modified base and / or comprising a modification at the level of the internucleotide bond and / or at the level of the skeleton.
- modified base mention may be made of inosine, methyl-5-deoxycytidine, dimethylamino-5-deoxyuridine, diamino-2,6-purine and bromo-5-deoxyuridine.
- Alpha-oligonucleotides such as those described in FR-A-2 607 507, LNAs such as phosphorothioate-LNA and 2'-thio-LNA described in Bioorganic & Medicinal Chemistry Letters, Volume 8, Issue 16, 18 August 1998 .pages 2219-2222, and the PNAs which are the subject of the article by M. Egholm et al., J. Am. Chem. Soc. (1992), 114, 1895-1897, are examples of oligonucleotides consisting of nucleotides whose skeleton is modified. The revelation of the hybridization reactions can be carried out by labeling the binding nucleic acids, as illustrated above.
- the target mRNA can be extracted by methods known to those skilled in the art, then optionally amplified, such as for example by RT-PCR or by NASBA (Maleck, L., et al ., 1994, Methods in Molecular Biology, 28, ch 36, Ed PG Isaac, Humana Press, Inc., Totowa, NJ).
- the biological sample which can be used for the detection of the presence of NGF by detection of NGF mRNA can be any sample as described above.
- the biological sample can consist of tissue obtained from a tumor or metastasis biopsy, or else from biological fluid, if necessary previously treated to isolate the circulating tumor cells, as described above.
- the method of the invention can be used both for early diagnosis and for screening, therapeutic monitoring, prognosis and diagnosis of relapses in the context of breast cancer since only cancer cells produce NGF and this production is a function of the grade of the cancer.
- Another object of the invention thus consists in the use of the method of the invention in the early diagnosis, screening, therapeutic monitoring, prognosis and diagnosis of relapses in the context of breast cancer.
- NGF can also have a role of therapeutic target.
- NGF binding agent capable of blocking cell proliferation or by an NGF inhibitor.
- NGF binding partners and NGF inhibitors can therefore be used as drugs.
- the subject of the present invention is also the use of an NGF binding partner or an NGF inhibitor for the preparation of a medicament, it being understood that, in the context of cancer, the binding partners of the NGF are not receptors for NGF or active fragments of these receptors.
- said medicament is useful for blocking tumor proliferation and remote dissemination in patients with breast cancer.
- compositions comprising as active principle at least one NGF binding partner or an NGF inhibitor, optionally in combination with a pharmaceutically acceptable excipient, are also included in the invention, it being understood that, in the context of cancer, NGF binding partners are not receptors for NGF or active fragments of these receptors.
- compositions useful against breast cancer include, as active ingredient, at least one NGF binding partner capable of blocking cell tumor proliferation or an NGF inhibitor.
- the specific NGF binding partners suitable as active principle are in particular as defined above in the immunological tests and can be any other partner known to those skilled in the art capable of blocking tumor proliferation.
- the specific partner capable of blocking the proliferation of breast cancer cells is an antibody anti-NGF.
- NGF inhibitor direct inhibitors of NGF, that is to say inhibitors blocking the biological activity of the protein, inhibitors of the NGF exocytosis pathways, inhibitors of NGF mRNA and inhibitors of the gene encoding NGF.
- Inhibitors of the protein exocytosis pathways and in particular of NGF are widely known to those skilled in the art.
- a synthetic fragment of this mRNA can be used as an inhibitor of the NGF mRNA.
- RNA interference technology is based on the use of a double-stranded RNA oligonucleotide corresponding to a short sequence of cellular mRNA to be inhibited. This duplex oligonucleotide (introduced or not into a plasmid), after entering the cell, is taken up by the Dicer / Risc enzymatic system, which will lead to the degradation of the corresponding cellular mRNA (Dykxhoorn D et al., 2003, Nature Reviews, vol. 4, p457-467).
- an antisense oligonucleotide of NGF As an inhibitor of the gene coding for NGF, there may be mentioned an antisense oligonucleotide of NGF.
- This oligonucleotide can be easily prepared by a person skilled in the art.
- the latter can be put into conditions such that they specifically penetrate into the cells of interest, such as tumor cells, which constitutes another mode of realization of the invention.
- a partner which allows such penetration such as for example a carrier molecule, a polymer such as the polymers used in gene therapy or else a viral vector such as adenoviruses and poxviruses, also used in gene therapy.
- the carrier molecule can be an anti-MUCl antibody or an anti-epithelial cell antibody, or alternatively an anti-HER-2 / neu antibody.
- the pharmaceutical composition comprises, as active principle, an NGF binding partner or an NGF inhibitor such as a direct inhibitor or an inhibitor of the NGF exocytosis pathways, the latter are placed under conditions such as they penetrate specifically into the tumor cells of interest, the inhibitors of the NGF mRNA and the inhibitors of the gene coding for NGF having the capacity to penetrate naturally into said cells.
- compositions of the invention for oral, sublingual, subcutaneous, intramuscular, intratumoral, intravenous, topical, local, intratracheal, intranasal, transdermal, rectal, intraocular, intra-auricular administration, said active principle capable of being administered in unit administration form.
- the unit administration forms can be, for example tablets, capsules, granules, powders, injectable oral solutions or suspensions, transdermal patches (“patch”), sublingual, buccal, intratracheal, intraocular administration forms. , intranasal, in-ear, inhalation, topical, transdermal, subcutaneous, intramuscular, intratumoral or intravenous administration forms, rectal administration forms or implants.
- transdermal patches (“patch”)
- sublingual, buccal, intratracheal intraocular administration forms.
- intranasal, in-ear, inhalation topical, transdermal, subcutaneous, intramuscular, intratumoral or intravenous administration forms, rectal administration forms or implants.
- creams, gels, ointments, lotions or eye drops can be considered.
- Said unit forms are dosed to allow daily administration of 0.001 to 10 mg of active principle per kg of body weight, depending on the dosage form.
- the present invention also relates to a method of treating breast cancer which comprises administering to a patient an effective dose of an NGF binding partner or an NGF inhibitor .
- FIG. 1 relates to graphic representations relating to the demonstration of the expression of NGF in cancer cells, in which:
- FIG. 1A represents an electrophoresis gel showing, after RT-PCR, the secretion of NGF by the cancer cells MCF-7, T47D, MDA-
- MB-231 and BT20 and by the cells of the submaxillary gland as a control, as well as the absence of such secretion by normal NBEC cells (Normal Breast Epithelial Cells),
- FIG. 1B represents an electrophoresis gel demonstrating, after immunoblotting, the secretion of NGF by the cancer cells MCF-7,
- FIG. 1C is a graph giving the quantity of NGF secreted as a function of the cells tested by ELISA, namely the cancer cells MCF-7, T47D, MDA-MB-231 and BT20, the cells of the submaxillary gland and the cells
- FIG. 2 relates to representations on the coculture of cancer cells and of cells sensitive to NGF, in which:
- FIG. 2A represents the experimental scheme for coculture of PC 12 cells (1) developing in the presence of NGF and cancer cells (2), and
- FIG. 2B consists of photographs representing the culture of PCI 2 cells as a control (photo 2), the differentiation of PC 12 cells under the influence of NGF (photo 3), the coculture of cells sensitive to NGF in the presence of MCF-7 cancer cells (photo 4), culture of MCF-7 cancer cells in the presence of an anti-NGF antibody (photo 5), culture of cancer cells MCF-7 in the presence of the inhibitor K252a (photo 6), and the culture of normal breast cells NBEC (photo 7)
- FIG. 3 shows photographs of immunocytochemistry highlighting the expression of NGF by immunodetection in tissue from biopsy, in which photos A and B relate to normal tissue, respectively with or without labeling with NGF, photos C to F for cancerous tissue, photos C and E for sections without NGF labeling (negative control) and photos D and F for sections with NGF labeling,
- FIG. 4 relates to graphs showing the influence of a binding partner capable of blocking the proliferation of breast cancer cells on cell growth, in which:
- FIG. 4A represents a graph showing the growth of MCF-7 cells in number of cells (10 4 cells / 35 mm disc), either without an agent for blocking tumor proliferation as a control, or in the presence of anti-NGF antibody MAB-256, either in the presence of the inhibitor K-252a, and
- FIGS. 4B and 4C represent graphs giving the number of MCF-7 cells as a function of the dose of the antibody MAB-256 (FIG. 4B) or of the dose of the inhibitor K-252a (FIG. 4C) and
- Figure 5 gives graphs highlighting the influence of an anti-NGF antibody, as a function of time, on tumor volume ( Figure 5A), on tumor mass
- HEPES 20 raM 2 g / 1 sodium bicarbonate, 2 mM L-glutamine, 10% fetal calf serum (FCS), 100 units / ml penicillin-streptomycin, 50 ⁇ g / ml gentamycin, 1% non-essential amino acids and 5 ⁇ g / ml insulin.
- FCS fetal calf serum
- NBEC normal breast epithelial cells
- DMEM / F12 medium 1/1 (BioWhittaker) containing 5% FCS, 10 IU / ml insulin, 5 ⁇ M cortisol, 2 ng / ml EGF, 100 ng / ml cholera toxin, 100 ng / ml penicillin and 45 ⁇ g / ml gentamycin (medium Bl).
- RNA extracted was quantified by measuring the absorbance at 260 nm and the purity of the RNA was sought by the absorbance ratio at 260 nm and at 280 nm. The absence of RNA degradation was confirmed by RNA electrophoresis on a 1.5% agarose gel containing ethidium bromide.
- Reverse transcriptase (RT) was carried out by adding a reaction mixture containing 2 g of purified total mRNA, IX reaction buffer, 10 mM of DTT, 400 mM of dNTP each, 2.5 M of oligo (dT), 40 units of Rnasine and 200 units of reverse transcriptase from Moloney murine leukemia virus at 25 ⁇ l of total reaction volume. All reactions were incubated at 37 ° C for 1 h, then inactivated at 95 ° C for 5 min. The PCR was carried out on the cDNAs after RT or on the RNA samples without the RT step for the negative controls as follows:
- PCR buffer 200 mM Tris-HCl, pH, were added to PCR tubes
- Sense probe 5'-GACAGTGTCAGCGTGTGGGTT-3 'Antisense probe: 5'-CCCAACACCATCACCTCCTT-3'
- the PCR conditions were as follows: after treatment at 95 ° C for
- FIG. 1A The visualization of the amplified material under UN light by staining with ethidium bromide after electrophoresis on agarose gel is shown in FIG. 1A.
- This figure shows a transcription product of the ngf of 1A bpd for cancer epithelial cells and cells of the submaxillary gland (positive control), while this product is not detected for ⁇ BEC cells. This test therefore makes it possible to demonstrate that cancer cells secrete ⁇ GF, while the corresponding non-cancerous epithelial cells do not secrete it.
- the subconfluent cells cultured as indicated in point 1.1 above, were rinsed and placed in a serum-free medium containing fibronectin and transferrin for 24 h. After depriving them of nutrients, the cells have were collected by scraping in PB S buffer (phosphate buffered saline) and subjected to centrifugation (1000 ⁇ g, 5 min).
- PB S buffer phosphate buffered saline
- the pellet was treated with lysis buffer (10% SDS, 0.5% ⁇ -mercaptoethanol, 0.5M Tris HC1 pH 6.8, 25% glycerol, 0.5%) and boiled 5 min at 100 ° C.
- lysis buffer (10% SDS, 0.5% ⁇ -mercaptoethanol, 0.5M Tris HC1 pH 6.8, 25% glycerol, 0.5%) and boiled 5 min at 100 ° C.
- the lysates from each cell line and the submaxillary gland were subjected to SDS-PAGE, and transferred to a nitrocellulose membrane by electroblotting (200 mA, 45 min).
- Each membrane was then tested with a polyclonal rabbit anti-NGF antibody (sc-548, Santa Cruz Biotechnology, Tebu, France) at 4 ° C overnight. Each membrane was rinsed three times with TBS-T buffer, then incubated at room temperature for 2 h with rabbit anti-immunoglobulin antibody coupled to horseradish peroxidase (Molecular Probes). Each membrane was rinsed four times with TBS-T buffer and the reaction was revealed using the ECL chemiluminescence kit (Amersham Pharmacia Biotech) with Kodak AR X-Omat film.
- NGF was detected with cancer cells and the submaxillary gland (band at 14 kDa), while this band was absent for non-cancer cells.
- Example 3 Demonstration of the expression of NGF in breast cancer cells by ELISA 3.1 Cells tested
- the wells were washed three times with 400 ⁇ l of PBS, pH 7.4, containing 0.05% Tween 20. The plates were then blocked at room temperature using 1% bovine serum albumin, 5% sucrose and 0.005% NaN 3 in the same buffer.
- Human ⁇ -NGF (R&D Systems) was used as standard sample at a rate of 0.25 to 8 ng / ml in 100 ⁇ l of the dilution buffer.
- the plates were then washed extensively and the specific anti-human ⁇ -NGF goat IgG detection antibody (BAF-256, R&D Systems) was added at 50 ng / ml before incubation for 2 h at temperature. room.
- the immunoplates were washed three times with washing buffer and 100 ⁇ l of streptavidin / horseradish peroxidase were added for an incubation of 20 min at room temperature.
- the reaction started by adding 100 ⁇ l of a substrate solution for 30 min of incubation at room temperature and in the dark.
- the PC 12 cells were cultivated beforehand at 37 ° C. in an atmosphere containing 5% CO 2 , in minimal essential medium modified by Dulbecco (DMEM) supplemented with 3 gA of sodium bicarbonate, 4 mM L-glutamine, 10% fetal calf serum, 5% horse serum and 100 units / ml of penicillin / streptomycin.
- DMEM minimal essential medium modified by Dulbecco
- the coculture was carried out with polycarbonate plates treated with Transwell® tissue culture (12 mm in diameter and 12 ⁇ m pore size). An initial equilibrium period was observed by adding the media to the central well of the plate, then to the Transwell® insert, operation followed by incubation at 37 ° C for 3 h.
- the PC 12 cells were seeded in 12-well plates coated with collagen for 24 h to ensure correct attachment to the culture plates.
- MCF-7 or NCBE cells were seeded inside the Transwell® insert, corresponding to the upper compartment in the complete medium for 24 h. After this time, each cell line was rinsed three times with serum-free medium and incubated in withdrawal medium. In the control experiments, the medium was supplemented with medium containing either NGF or an inhibitor of trk tyrosine kinase activity (K-252-a, Calbiochem, France), or anti-mouse mouse monoclonal antibody. Human ⁇ -NGF (MAB-256, R&D Systems).
- FIG. 2A shows the experimental diagram where (2) corresponds to cancerous or non-cancerous cells and (1) corresponds to PCI 2 cells,
- Photo 4 which relates to the coculture of the MCF-7 and PC 12 cells, shows that the PC 12 cells have differentiated after 48 h of culture
- Photo 5 which concerns the coculture of MCF-7 and PC 12 cells in the presence of the anti-NGF antibody, shows a strong inhibition of the differentiation of PC 12 cells due to the antibody
- Photo 6 which relates to the coculture of MCF-7 and PC 12 cells in the presence of the inhibitor K-252a, shows a strong inhibition of the differentiation of PC12 cells due to the inhibitor, and • photo 7, which concerns the coculture of normal NBEC and PC 12 cells, highlights the absence of differentiation of PC12 cells.
- Photo 7 which concerns the coculture of normal NBEC and PC 12 cells, highlights the absence of differentiation of PC12 cells.
- biopsies of human breast cancer tissue or healthy non-cancerous tissue were fixed with 10% formalin solution for 24 hours. After dehydration by increasing alcoholic baths (30 to 100% o), the samples were included in the paraffin. The sections were made using a microtome (fine section of 5 micrometers), then fixed on slides coated with 3-aminopropyltriethoxysilane (TESPA, Dako France).
- the blades were dewaxed by soaking the blades in baths according to the following procedure:
- the slides were then stored at + 4 ° C. 5.3 Labeling of NGF
- the sections were rinsed with 0.1% TBS-Tween (TBS: 17.54 g of NaCl, 2.42 g of Trisbase, qs 2 liters of water, pH 7.4) for 10 min. under agitation.
- the antigens were reactivated with 0.01M citrate buffer (1.05 g of citric acid monohydrate, qs 500 ml of distilled water, pH 6 (NaOH)) 2 times 5 min in a water bath at 95 ° C.
- the slides were incubated for 5 min with shaking in 3% hydrogen peroxide / TBS.
- the slides were saturated for one hour at room temperature in TBS / 3% BSA.
- the slides were then incubated for 2 h at room temperature in a humid chamber with 80 ⁇ l of anti-NGF primary antibody (Santa Cruz, Tebu France) diluted 1/50 in TBS / 3% BSA. They were washed 3 times in TBS / Tween for 5 min with stirring. A further incubation of the slides was then carried out for 2 h at room temperature in a humid chamber with 80 ⁇ l of secondary anti-rabbit IgG monkey antibody, said antibody having been linked to horseradish peroxidase (Jackson Laboratories, US), diluted 1/100 in TBS / 3% BSA.
- the staining was checked under a microscope and stopped in a PBS bath.
- a counter staining was performed to visualize the breast structures by immersing in the Harris hematoxylin in modified solution (Sigma) for 4 s. Rinsed in basic water, then in a PBS bath.
- Photos A and B relate to the normal tissue, respectively with or without labeling with NGF.
- Photos C to F relate to cancerous tissue, photos C and E for sections without NGF marking (negative control) and photos D and F for sections with NGF marking.
- the calibration bar represents 250 micrometers for photos A, B, E and F or 600 micrometers for photos C and D.
- NGF is detected by immunohistochemistry on biopsy slides in breast cancer epithelial cells, but not in normal mammary epithelial cells (epithelial cells labeled with anti-NGF antibody, and therefore stained , within the mammary tumor glands in D and F compared to C and E, and not in the normal mammary glands in B compared to A).
- Example 6 Detection of NGF in tumor cells by flow cytometry The MCF-7 cells were detached by scraping the bottom of the culture dish. 100 ⁇ l of fixative (Coulter) was then added with an incubation of 15 minutes at room temperature. The cells were then washed three times with PBS and centrifuged at 1900 rpm for 5 minutes. 100 ⁇ l of permeabilizer (Coulter) was added, then incubated for 5 minutes at room temperature.
- the cells were then washed three times with PBS and centrifuged at 1900 rpm for 5 minutes.
- the cells were then washed three times with PBS and centrifuged at 1900 rpm for 5 minutes.
- the cells were taken up in 500 ⁇ l of PBS, then the reading was carried out with a flow cytometer (Beckman Coulter® EPICS®).
- the effect of the blocking antibody MAB-256 (supra) and the inhibitor K-252a on the growth of MCF-7 cells was studied. To do this, the cells were seeded at the rate of 2 ⁇ 10 4 cells / ml in 35 mm dishes in complete medium. After reaching 40% confluence, the cells were washed twice and left without nutrients in a medium devoid of serum containing fibronectin (2 ⁇ g / ml) and transferrin (30 ⁇ g / ml) for 3 h. The next hour, the medium was replaced by 2 ml of the same medium containing the inhibitor K-252a or the antibody MAB-26 at different concentrations in order to study the effect of the pharmacological inhibitor or of the blocking inhibitor on the basal level of growth.
- the number of cells was determined after trypsinization of the monolayer culture with a 0.25% trypsin / EDTA solution using a hemocytometer.
- a monoclonal anti-mouse antibody (A4700, SIGMA), that is to say irrelevant, was also used to determine the specificity of the blocking antibody.
- FIG. 4A shows that the growth of MCF-7 cells in base medium (squares) decreases in the presence of antibodies (triangles) and of inhibitor (diamonds), - the Figures 4B and 4C show that there is a dose effect of the antibody and the inhibitor, respectively, on the proliferative effect of NGF for cancer cells.
- NGF can therefore be used as a therapeutic target.
- Example 8 Effect of anti-NGF antibodies on tumorigenesis of breast cells in vivo The growth of breast cancer cells MDA-MB-231 was studied as follows:
- mice from in vitro cultures, in 50 microliters of PBS per mouse.
- the mice were kept under standard breeding conditions at room temperature, with a day / night alternation and unrestricted access to food and drink.
- Fourteen, 21 and 28 days after injection of the cells, half of the mice were injected with anti-human NGF blocking antibodies (Oncogene Research Product,
- VWR France at the periphery of the tumor (subcutaneous at the flank 1 cm from the injection point of the tumor cells) at the concentration of 12.5 micrograms in 50 microliters of PBS buffer per mouse.
- the size of the tumors was measured on living mice, whether or not treated with the anti-NGF antibody, with an electronic caliper 21 and 35 days after the injection of the cancer cells (D21 and D35, respectively).
- the tumor volume was calculated with the following formula: 0.5236 x length (mm) ⁇ width (mm) x (length + width) / 2.
- the weight of the tumors was also measured on D35 on these same mice, after sacrifice of the animal, using an electronic precision balance.
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Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03778473A EP1556699B1 (fr) | 2002-10-28 | 2003-10-28 | Procede de dosage du ngf pour le diagnostic in vitro du cancer du sein et utilisation en therapie |
| DE60326871T DE60326871D1 (de) | 2002-10-28 | 2003-10-28 | Verfahren zur dosierung von ngf zur in vitro diagnose von brustkrebs und therapeutische verwendung |
| JP2004547728A JP4619125B2 (ja) | 2002-10-28 | 2003-10-28 | invitroで乳がんを診断するためのNGFアッセイの方法及び治療におけるその使用 |
| US10/530,568 US7618790B2 (en) | 2002-10-28 | 2003-10-28 | Method for NGF assay for in vitro diagnosis of breast cancer and therapeutic use |
| AU2003285472A AU2003285472B2 (en) | 2002-10-28 | 2003-10-28 | Method for NGF assay for in vitro diagnosis of breast cancer and therapeutic use |
| BRPI0315735A BRPI0315735B8 (pt) | 2002-10-28 | 2003-10-28 | método para o ensaio de ngf a diagnose in vitro de câncer de mama e uso terapêutico |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0213428A FR2846426B1 (fr) | 2002-10-28 | 2002-10-28 | Procede de dosage du ngf pour le diagnostic in vitro du cancer du sein et utilisation en therapie |
| FR02/13428 | 2002-10-28 |
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| WO2004040312A2 true WO2004040312A2 (fr) | 2004-05-13 |
| WO2004040312A3 WO2004040312A3 (fr) | 2004-06-17 |
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| Country | Link |
|---|---|
| US (1) | US7618790B2 (fr) |
| EP (2) | EP2085783A1 (fr) |
| JP (1) | JP4619125B2 (fr) |
| AT (1) | ATE426813T1 (fr) |
| AU (1) | AU2003285472B2 (fr) |
| BR (1) | BRPI0315735B8 (fr) |
| DE (1) | DE60326871D1 (fr) |
| ES (1) | ES2324818T3 (fr) |
| FR (1) | FR2846426B1 (fr) |
| WO (1) | WO2004040312A2 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006003293A (ja) * | 2004-06-21 | 2006-01-05 | Norio Nagao | 癌転移抑制能測定する方法およびその測定器 |
| FR2896881A1 (fr) * | 2006-01-31 | 2007-08-03 | Biomerieux Sa | Procede de dosage du prongf pour le diagnostic in vitro du cancer du sein et utilisation du prongf en therapie |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2009256118A1 (en) * | 2008-06-05 | 2009-12-10 | The Administrators Of The Tulane Educational Fund | Methods and instrumentation for during-synthesis monitoring of polymer functional evolution |
| US9487582B2 (en) * | 2010-01-08 | 2016-11-08 | Institut National De La Sante Et De La Recherche Medicale (Inserm) | Methods for treating pancreatic cancer |
| US9884909B2 (en) | 2010-12-01 | 2018-02-06 | Alderbio Holdings Llc | Anti-NGF compositions and use thereof |
| EP2646468B1 (fr) | 2010-12-01 | 2018-07-25 | AlderBio Holdings LLC | Compositions anti-ngf et leur utilisation |
| US9067988B2 (en) | 2010-12-01 | 2015-06-30 | Alderbio Holdings Llc | Methods of preventing or treating pain using anti-NGF antibodies |
| US9078878B2 (en) | 2010-12-01 | 2015-07-14 | Alderbio Holdings Llc | Anti-NGF antibodies that selectively inhibit the association of NGF with TrkA, without affecting the association of NGF with p75 |
| US11214610B2 (en) | 2010-12-01 | 2022-01-04 | H. Lundbeck A/S | High-purity production of multi-subunit proteins such as antibodies in transformed microbes such as Pichia pastoris |
| US9539324B2 (en) | 2010-12-01 | 2017-01-10 | Alderbio Holdings, Llc | Methods of preventing inflammation and treating pain using anti-NGF compositions |
| JP7467866B2 (ja) * | 2019-10-02 | 2024-04-16 | 住友ゴム工業株式会社 | 親水性基材及び親水性基材作製方法 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006003293A (ja) * | 2004-06-21 | 2006-01-05 | Norio Nagao | 癌転移抑制能測定する方法およびその測定器 |
| FR2896881A1 (fr) * | 2006-01-31 | 2007-08-03 | Biomerieux Sa | Procede de dosage du prongf pour le diagnostic in vitro du cancer du sein et utilisation du prongf en therapie |
| WO2007088305A1 (fr) * | 2006-01-31 | 2007-08-09 | Biomerieux | Procede de dosage du prongf pour le diagnostic in vitro du cancer en particulier du cancer du sein, de la thyroide ou du poumon et utilisation du prongf en therapie |
| JP2009525478A (ja) * | 2006-01-31 | 2009-07-09 | ビオメリュー | 癌、特に乳癌、甲状腺癌及び肺癌のインビトロ診断のためのProNGFアッセイのための方法とProNGFの治療的使用 |
| US8008009B2 (en) | 2006-01-31 | 2011-08-30 | Biomerieux | Method for ProNGF assay for in vitro diagnosis of cancer in particular breast, thyroid or lung cancer and therapeutic use of ProNGF |
| JP2012211148A (ja) * | 2006-01-31 | 2012-11-01 | Biomerieux | 癌、特に乳癌、甲状腺癌及び肺癌のインビトロ診断のためのProNGFアッセイのための方法とProNGFの治療的使用 |
| CN101395478B (zh) * | 2006-01-31 | 2013-08-28 | 生物梅里埃公司 | 用于体外诊断癌症具体是乳腺癌、甲状腺癌或肺癌的ProNGF测定的方法以及ProNGF的治疗用途 |
| US9061045B2 (en) | 2006-01-31 | 2015-06-23 | Biomerieux | Method for ProNGF assay for in vitro diagnosis of cancer in particular breast, thyroid or lung cancer and therapeutic use of ProNGF |
Also Published As
| Publication number | Publication date |
|---|---|
| BR0315735A (pt) | 2005-09-06 |
| US7618790B2 (en) | 2009-11-17 |
| EP1556699B1 (fr) | 2009-03-25 |
| FR2846426B1 (fr) | 2004-12-10 |
| ATE426813T1 (de) | 2009-04-15 |
| EP1556699A2 (fr) | 2005-07-27 |
| ES2324818T3 (es) | 2009-08-17 |
| FR2846426A1 (fr) | 2004-04-30 |
| BRPI0315735A8 (pt) | 2018-09-18 |
| JP4619125B2 (ja) | 2011-01-26 |
| WO2004040312A3 (fr) | 2004-06-17 |
| DE60326871D1 (de) | 2009-05-07 |
| US20060051818A1 (en) | 2006-03-09 |
| BRPI0315735B1 (pt) | 2018-10-30 |
| BRPI0315735B8 (pt) | 2021-05-25 |
| EP2085783A1 (fr) | 2009-08-05 |
| AU2003285472B2 (en) | 2009-10-08 |
| AU2003285472A1 (en) | 2004-05-25 |
| JP2006504101A (ja) | 2006-02-02 |
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