WO2013072584A2 - Méthode de caractérisation de cellules tumorales circulantes et application au diagnostic - Google Patents
Méthode de caractérisation de cellules tumorales circulantes et application au diagnostic Download PDFInfo
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- WO2013072584A2 WO2013072584A2 PCT/FR2012/000470 FR2012000470W WO2013072584A2 WO 2013072584 A2 WO2013072584 A2 WO 2013072584A2 FR 2012000470 W FR2012000470 W FR 2012000470W WO 2013072584 A2 WO2013072584 A2 WO 2013072584A2
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- 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
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6883—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material
- C12Q1/6886—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material for cancer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/575—Immunoassay; Biospecific binding assay; Materials therefor for cancer
- G01N33/5758—Immunoassay; Biospecific binding assay; Materials therefor for cancer involving compounds serving as markers for tumours, cancers or neoplasias, e.g. cellular determinants, receptors, heat shock/stress proteins, A-protein, oligosaccharides or metabolites
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q2600/00—Oligonucleotides characterized by their use
- C12Q2600/158—Expression markers
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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
- G01N2333/46—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans from vertebrates
- G01N2333/47—Assays involving proteins of known structure or function as defined in the subgroups
- G01N2333/4701—Details
- G01N2333/4742—Keratin; Cytokeratin
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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
- G01N2333/4756—Neuregulins, i.e. p185erbB2 ligands, glial growth factor, heregulin, ARIA, neu differentiation factor
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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
- G01N2333/705—Assays involving receptors, cell surface antigens or cell surface determinants
- G01N2333/70589—CD45
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/52—Predicting or monitoring the response to treatment, e.g. for selection of therapy based on assay results in personalised medicine; Prognosis
Definitions
- the subject of the present invention is a new method for characterizing circulating tumor cells (CTC) as well as the uses of this method for deciding on the implementation of an antitumor treatment, diagnosing the progress of a cancer and to predict the evolution of the disease in a patient.
- CTC circulating tumor cells
- the detection of the presence in CTCs of molecular markers targeted for antitumor treatment may make it possible to select the patients likely to benefit from this treatment, or even to evaluate at the individual level the response or resistance to this same treatment.
- the selection of patients likely to benefit from targeted antitumor therapy is currently based on the search for molecular markers in metastasis biopsies.
- the present method makes it possible to carry out this research on CTCs, completing or even substituting for the analysis of the tumor biopsy.
- the method according to the present invention provides an alternative solution for the detection of CTCs not requiring the presence of a licensed cytopathologist, as it combines a true morphological analysis, phenotypic identification of the cells by fluorescent immunostaining and genomic detection of the presence of particular DNA sequences, such as characteristic rearrangements of cancer cells.
- the detection method according to the invention is now described in detail.
- the subject of the present invention is a method of identifying, in a biological sample and in particular a blood sample, circulating tumor cells (CTC) bearing at least one marker that is characteristic of the tumor nature of the cell, said marker being chosen from groups consisting of:
- said method comprising the following steps: at. Identification, on a support comprising the cells from the biological sample, of at least one signal indicating the presence of CTC, in particular the signal characterizing the presence of a protein encoded by a gene characteristic of the CTC tumor nature, b. Detection, on a support comprising the cells from the biological sample, using a FISH-type technique, of the signal associated with the presence of a gene characteristic of the tumor nature of the cell, c. Comparison of the location on the support of the signals obtained in steps a and b and identification of the CTCs.
- the invention has the advantage of combining, on the same support, a phenotypic labeling and an analysis by a method of FISH type, which preserve the integrity of CTC.
- the biological sample comes from a patient with cancer.
- the circulating tumor cells are of epithelial and mesenchymal origin.
- the CTC identification method is also referred to as the CTC enrichment method or the CTC characterization method.
- the three expressions are equivalent and can be used interchangeably.
- the enrichment method used according to the present invention is the ISET method.
- the cells coming from the biological sample serving for identifying at least one signal that is a control signal for the presence of CTC and for detecting the signal associated with the presence of a gene characteristic of the tumor nature of the cell, with the exception of the EML4-ALK fusion gene are isolated according to their size which varies from 8 pm to at least 40 pm.
- the subject of the invention is a method for identifying circulating tumor cells (CTCs) carrying the EML4-ALK fusion gene in a biological sample originating from a patient, said method comprising the following steps: :
- Identification on a support comprising the cells originating from the biological sample, of at least one signal indicating the presence of CTC, in particular the signal characterizing the presence of a protein encoded by the EML4-ALK fusion gene,
- the method detects the presence of the EML4-ALK fusion gene, by the FISH technique, and identifies CTC morphologically and phenotypically, and in particular the presence of the protein encoded by said fusion gene.
- the EML4-ALK fusion protein has potent oncogenic activity and a key role in carcinogenesis in a subpopulation of patients with non-small cell lung cancer (also referred to as non-small cell lung cancer (NSCLC)). This activity, which can be blocked by small molecules, including tyrosine kinase inhibitors targeting ALK, is an important molecular target in the treatment of these cancers.
- the subject of the invention is a method of identifying, in a biological sample originating from a patient, circulating tumor cells (CTC) carrying at least one marker that is characteristic of the tumor nature of the cell.
- CTC circulating tumor cells
- said method comprising the following steps a. Identification, on a support comprising the cells from the biological sample, of at least one signal indicating the presence of CTC, in particular the signal characterizing the presence of a protein encoded by a gene characteristic of the CTC tumor nature, except for a protein encoded by the EML4-ALK fusion gene, b. Detection, on a support comprising the cells from the biological sample, using a FISH-type technique, of the signal associated with the presence of a gene characteristic of the tumor nature of the cell, with the exception the EML4-ALK fusion gene, c. Comparison of the location on the support of the signals obtained in steps a and b and identification of the CTCs,
- the subject of the invention is a method of identifying, in a biological sample, in particular a blood sample, circulating tumor cells (CTC) bearing at least one marker that is characteristic of the tumor nature of the cell.
- CTC circulating tumor cells
- said method comprising the following steps:
- Identification on a support comprising the cells from the biological sample, of at least one signal indicating the presence of CTC, in particular the signal characterizing the presence of a protein encoded by a gene characteristic of the CTC tumor nature, except for a protein encoded by the EML4-ALK fusion gene, b.
- Detection on a support comprising the cells from the biological sample, using a FISH type technique using specific reshaping or amplification probes, the signal associated with the presence a gene characteristic of the tumor nature of the cell, with the exception of the EML4-ALK fusion gene, c. Comparison of the location on the support of the signals obtained in steps a and b and identification of the CTCs.
- the method for detecting CTCs described in the publication by Charpentier et al (2011) describes an XTC detection method comprising, on the one hand, the combined use of three fluorescent labels and, on the other hand, a morphocytological analysis performed by an experienced cytopathologist.
- This document does not disclose a CTC detection method combining fluorescent phenotypic markings and automated analysis of cell morphology; it also does not disclose a method combining the phenotypic detection of cells by fluorescent immunostaining and the chromosomal detection of the presence of particular DNA sequences.
- this document does not disclose a detection method combining automated detection of cell morphology, phenotypic detection by fluorescent immunostaining and molecular detection by the use of FISH (Fluorescence In Situ Hybridization) methods.
- FISH Fluorescence In Situ Hybridization
- the identification method according to the invention comprises the following steps:
- Identification on a support comprising the cells from the biological sample, of at least one signal indicating the presence of CTC, in particular the signal characterizing the presence of a protein encoded by a gene characteristic of the tumor nature of the cell with the exception of the EML4-ALK fusion protein gene,
- the method detects, on the one hand, the presence of the EML4-ALK fusion gene and, on the other hand, the presence of a protein other than a protein encoded by said fusion gene.
- the identification method according to the invention comprises the following steps: a. Identification, on a support comprising the cells from the biological sample, of at least one signal indicating the presence of CTC, in particular the signal characterizing the presence of a protein encoded by a gene characteristic of the tumor nature of the cell except for a protein encoded by the EML4-ALK fusion gene, b.
- Detection on a support comprising the cells originating from the biological sample, using a FISH type technique using specific reshaping or amplification probes, of the signal associated with the presence of the gene coding for the aforesaid protein , vs. Comparison of the location on the support of the signals obtained in steps a and b and identification of the CTCs.
- the subject of the invention is a method comprising the following steps:
- the identification method comprises the following steps: a.
- Identification on a support comprising the cells from the biological sample, of at least one signal indicating the presence of CTC, in particular the signal characterizing the presence of a tumor marker, b.
- Detection on a support comprising the cells coming from the biological sample, using a FISH-type technique using specific reshaping or amplification probes, of the signal associated with the presence of a gene coding for a oncogenic protein characteristic of CTCs, with the exception of proteins encoded by the EML4-ALK fusion gene, and c. Comparison of the location on the support of the signals obtained in steps a and b and identification of the CTCs.
- the method detects, on the one hand, the presence of the gene coding for an oncogenic protein characteristic of CTCs and, on the other hand, the presence of a tumor marker.
- the method according to the invention comprises a step of enriching the biological sample in CTC, preliminary or inherent to the steps of identification of the different signals, the enrichment factor of the cells in CTC being understood as about 1/100 to about 1 / 100,000.
- the support comprising the cells coming from the biological sample is a filter, in particular an ISET filter (sold by the company Rarecell or Screencell)
- the filtration of the blood sample leads, in a manner inherently to the filtration, to an enrichment of the cells in CTC.
- the approach of filters provides ⁇ generally more cells to establish the diagnosis.
- Filters are very delicate than any other medium (no flatness, background noise and pore problems).
- the size of the pores of these filters determines the size of the cells that will be able to be retained on the filter, said size of cells being able to vary from 8 ⁇ to at least 40 ⁇ .
- the enrichment step takes place during the immunomagnetic separation, and is prior to the slide deposit.
- This enrichment is of the order of a factor of about 1/100 to a factor of about 1 / 100,000, depending on the enrichment method used and varies from one patient to another.
- the subject of the invention is a method in which the deposition of the cells originating from the patient's biological sample is carried out on a suitable support that can be analyzed using a microscope-type device.
- fluorescence or scanner said support may be a filter or a blade.
- the support used for depositing the biological sample can be analyzed in a microscope, such as for example a fluorescence microscope, a scanner, or any other device for reading a support, whether the reading is manual or automated.
- the support can be a filter, a blade, or any other support adapted to the deposit of the sample and the reading of the signals in a suitable apparatus.
- the inventors have thus developed an automated strategy using a blade scanner (in particular the ARIOL ® system from LEICA) which consists in sorting the cells recovered after filtration (or after enrichment by negative selection) into 2 fractions, one CD45 (+) and the other CD45 (-).
- the CD45 (-) fraction containing the different CTC populations is then extensively analyzed to identify purely epithelial CTCs, mesenchymal, hybrid (epithelial and mesenchymal) CTCs as well as other populations that do not express these markers.
- FISH the signals of FISH (rearrangement ALK EML4) are relocated in these different populations.
- CTCs can be characterized phenotypically and genotypically in their entirety.
- the cells from the biological sample of the patient are collected during filtration, for filter deposition, or deposited on a slide after magnetic immuno-separation, or by any appropriate method known to the patient. skilled person.
- step a that is to say the identification of at least one signal indicating the presence of CTC, in particular the signal characterizing the presence of a protein encoded by a gene characteristic of the tumor nature.
- the subject of the invention is a method in which the step of identifying at least one signal that is a witness of the presence of CTC is carried out by means of fluorescence immunolabeling using at least one marker chosen in one of the groups consisting of:
- the subject of the invention is a method in which the step of identifying at least one signal which is a control signal for the presence of CTC is carried out by means of a fluorescence immunolabeling using, in combination, at least two markers, each selected from one of the groups consisting of:
- the subject of the invention is a method in which the step of identifying at least one signal indicating the presence of CTC implements, in a combined manner, at least three markers, each being chosen from one of groups consisting of:
- a protein marker selected from the group consisting of: protein markers characteristic of epithelial cells and protein markers characteristic of mesenchymal cells.
- the subject of the invention is a method in which the step of identifying at least one signal indicating the presence of CTC implements, in a combined manner, four markers, each being chosen from the one of the groups consisting of:
- a protein marker selected from the group consisting of: protein markers characteristic of epithelial cells and protein markers characteristic of mesenchymal cells.
- the subject of the invention is a method in which the step of identifying at least one signal indicating the presence of CTC is carried out by means of fluorescence immunolabeling using at least one marker selected from one of the groups consisting of:
- a marker of a protein encoded by a gene characteristic of the tumor nature of the cell with the exception of a marker of the protein encoded by the EML4-ALK fusion gene, ii. a nuclear membrane marker or a nuclear marker, iii. a hematopoietic cell marker,
- a protein marker selected from the group consisting of: protein markers characteristic of epithelial cells and protein markers characteristic of mesenchymal cells.
- the subject of the invention is a method in which the step of identifying at least one signal which is a control signal for the presence of CTC is carried out by means of a fluorescence immunolabeling using, in combination, at least two markers, each selected from one of the groups consisting of:
- a marker of a protein encoded by a gene characteristic of the tumor nature of the cell with the exception of a marker of the protein encoded by the EML4-ALK fusion gene,
- a nuclear membrane marker or a nuclear marker ii. a nuclear membrane marker or a nuclear marker; a hematopoietic cell marker
- a protein marker selected from the group consisting of: protein markers characteristic of epithelial cells and protein markers characteristic of mesenchymal cells.
- the subject of the invention is a method in which the step of identifying at least one signal indicating the presence of CTC implements, in a combined manner, at least three markers, each being chosen from one of groups consisting of:
- a marker of a protein encoded by a gene characteristic of the tumor nature of the cell with the exception of a marker of the protein encoded by the EML4-ALK fusion gene,
- the subject of the invention is a method in which the step of identifying at least one signal indicating the presence of CTC implements, in a combined manner, four markers, each being chosen from the one of the groups consisting of:
- a marker of a protein encoded by a gene characteristic of the tumor nature of the cell with the exception of a marker of the protein encoded by the EML4-ALK fusion gene,
- a protein marker selected from the group consisting of: protein markers characteristic of epithelial cells and protein markers characteristic of mesenchymal cells.
- the invention relates to a method wherein the specific marker of the EML4-ALK fusion gene encoded protein clones are 5A4 or D5F3, marketed by companies AbCam ®, Cell Signaling Technology ®.
- the subject of the invention is a method in which the specific marker of the oncogenic proteins characteristic of CTCs is chosen from the markers of the proteins encoded by the HER2, ERG and cMet genes.
- the subject of the invention is a method in which the nuclear membrane marker used is the Emerin marker.
- emerin is used as a CTC nuclear membrane marker to identify the tumor nature of CTCs by differentiating them from hematopoietic cells and other normal cells. It can be used for CTCs from any type of tumor.
- the morphological characterization step is based either on the introduction of a nuclear membrane marker (such as emerin) into the quadruple fluorescent labeling, or on the completion of a staining step of the nuclei (such as hematoxylin / eosin) after IF labeling which must also be removed in the intermediate washing step between IF and FISH.
- a nuclear membrane marker such as emerin
- the subject of the invention is a method in which the nuclear marker used is chosen from the group consisting of: the DAPI marker, the Syto59, Sytox Orange, TOPRO 3 and Hoescht 33342 markers.
- the subject of the invention is a method in which the hematopoietic cell marker is chosen from the group consisting of: CD45 and CD31.
- the marker used is preferably CD45.
- CTCs are known to be heterogeneous and composed of different subpopulations.
- the approach according to the present invention makes it possible to identify and characterize the different subpopulations of CTC, purely epithelial, purely mesenchymal, hybrid (epithelial and mesenchymal) as well as other populations that ⁇ do not express these markers. Only the approaches of filtration or negative selection of CTCs by elimination of hematopoietic cells can give access to these cells.
- CTCs in number
- the methods of the prior art only recover a small fraction of CTC (epithelial CTC) and this too rare fraction is not used in this clinical context.
- the subject of the invention is a method in which the protein marker characteristic of epithelial cells is selected from the group consisting of: EpCAM markers, pan-cytokeratin markers and epithelial cadherin markers .
- the subject of the invention is a method in which the protein marker characteristic of mesenchymal cells is chosen from the group consisting of: vimentin markers and markers of neural cadherin.
- a particular embodiment of the invention which is the subject of the invention comprises a step of identifying at least one signal which is a control signal for the presence of CTC carried out by means of a fluorescence immunolabeling using: i. the marker of the protein encoded by the EML4-ALK fusion gene or the marker of a protein encoded by a gene chosen from the HER2, ERG and cMet genes,
- Another particular aspect of the invention relates to a method of the FISH type comprising the following successive steps:
- the method according to the invention comprises a FISH test carried out according to a particular and advantageous protocol, developed by the inventors, and using specific reshaping or amplification probes, and not centromeric probes. This method therefore makes it possible to specifically detect the presence of reshaped or amplified genes in the cells.
- the IF plus FISH sequence requires very mild methods for both IF and FISH and has an intermediate stage of fluorescence elimination before FISH. If the fluorescence is poorly eliminated, it follows a significant background noise that makes the FISH uninterpretable. Photobleaching is very aggressive towards cells and can not be used to eliminate fluorescence before FISH. Moreover, it is well known that FISH is already very delicate by itself. The inventors have developed successive gentle washes that respect the fragility of CTC and avoid cell losses,
- the method according to the invention is carried out on a blood sample of a patient.
- the biological samples necessary to diagnose the presence of an ALK gene rearrangement and to decide on a targeted anti-ALK treatment in the tests according to the prior art are necessarily tumor biopsies, invasive and often of poor quality, in particular in patients certain cancers such as NSCLC.
- Another aspect relates to the use of a method according to the invention for analyzing a biological sample from a cancer patient presenting the translocated ALK gene for monitoring tumor progression, for the prediction of a tumor event. metastatic type or for measuring the effectiveness of an anti-cancer treatment.
- Another aspect relates to the use of a method according to the invention for analyzing a biological sample from a cancer patient having the translocated ALK gene for the diagnosis of the indication of a tumor treatment against the ALK protein. More particularly, the invention relates to the use of the method described in the context of cancer patients likely to lead to the presence of metastases, including non-small cell lung cancer, and any other cancer presenting with reshaping the ALK gene.
- a method according to the invention therefore falls within the scope of personalized medicine with targeted antitumor therapy.
- the method according to the invention is carried out on a blood sample of a patient.
- the biological samples necessary to diagnose the presence of a molecular anomaly such as translocation or gene amplification and decide on a targeted treatment in the tests according to the prior art are necessarily tumor biopsies, invasive and often of poor quality, in particular in patients with certain cancers such as NSCLC or prostate cancer.
- Another aspect relates to the use of a method according to the invention for analyzing a biological sample, in particular a blood sample coming from a cancer patient presenting a molecular defect such as a translocation or a gene amplification for monitoring the evolution. tumor, for predicting a metastatic event or for measuring the effectiveness of an anti-cancer treatment.
- a biological sample in particular a blood sample coming from a cancer patient presenting a molecular defect such as a translocation or a gene amplification for monitoring the evolution. tumor, for predicting a metastatic event or for measuring the effectiveness of an anti-cancer treatment.
- Another aspect relates to the use of a method according to the invention for analyzing a biological sample from a cancer patient having a molecular defect such as translocation or gene amplification for the diagnosis of the indication of a treatment.
- tumor targeting oncogenic proteins encoded by these genes More particularly, the invention relates to the use of the method described in the context of cancer patients likely to lead to the presence of metastases, including non-small cell lung cancer, and any other cancer presenting a reworking of the ALK gene.
- a method according to the invention therefore falls within the scope of personalized medicine with targeted antitumor therapy.
- Figure 1 Fluorescence microscopy image on ISET filter showing the labeling obtained on line H2228 (EML4-ALK translocation carrier) with the monoclonal antibody (5A4 or D5F3) specific for translocated ALK protein.
- 1A Marking obtained with the nuclear dye DAPI;
- B Labeling obtained with the specific antibody of the ALK protein;
- C Marking obtained, with the specific antibody of the ALK protein and the DAPI.
- Figure 2 Fluorescence microscopy image showing a FISH experiment on ISET filter performed on CTC of a patient with non-small cell lung cancer.
- 2A Example of a hematopoietic cell retained on the filter having no translocation;
- 2B and 2C Example of two CTCs with translocation. 2p23 break point specific probes were used.
- FIG. 3 Fluorescence microscopy images in three representative patients (P2, P6, P11) showing FISH detection of ALK rearrangement in CTC and tumor of the same patient.
- Various CTC examples are presented: individual CTCs carrying only ALK (P2) shuffling, individual CTCs carrying both a native ALK gain and ALK (P6) shuffling, CLC in ALK shuffling (P11) clusters .
- Figure 4 Microscopy images illustrating the method combining 4-color immunofluorescence labeling (vimentin / cytokeratines / CD45 / DAPI and N-cadherin / E-cadherin / CD45 / DAPI) and FISH for the detection of CTCs carriers of the ALK reshuffle.
- 4A Example of two patients showing the mesenchymal phenotype of CTCs carrying the ALK rearrangement
- 4B Positive control of immunofluorescence markings on the A549 bronchial cancer line.
- Figure 5 Fluorescence microscopy images illustrating the possibility of following by FISH the presence of CTCs carrying ALK rearrangement in patients with ALK positive NKLC treated with an inhibitor of ALK.
- Figure 6 Fluorescence microscopy image showing detection of amplification of HER2 on ISET filter.
- 6A Example of a FISH experiment on the SKBR3 cell line
- 6B Example of a FISH experiment on CTCs of a patient carrying HER2 amplification
- 6C Example of immunofluorescence staining with the monoclonal antibody directed against the HER2 protein on the CTCs of a patient carrying the HER2 amplification.
- Figure 7 Fluorescence microscopy image showing in cell lines and prostate and breast cancer patients collected on ISET filter, the detection by FISH of various molecular abnormalities.
- A Detection of the ERG gene amplification in the LnCAP cell line;
- B Detection of the rearrangement of the ERG gene in the VCAP cell line;
- C Detection of the amplification of the AR gene in the LnCAP cell line;
- D Detection of the amplification of the HER2 gene in the SKBR3 cell line;
- E Detection of ERG gene amplification in a patient with prostate cancer;
- F Detection of cMYC gene amplification in a patient with prostate cancer;
- G Detection of AR gene amplification in a patient with prostate cancer;
- H Detection of HER2 gene amplification in a patient with breast cancer.
- FIG. 8 Microscopy images illustrating in cell lines (FIG. 8A) and CTCs of patients suffering from prostate cancer (FIG. 8B) the automated method combining, on an ISET filter, the 4-color immunofluorescence labeling (vimentin / cytokeratines / CD45 / DAPI) and FISH for the detection of CTCs carrying amplification of ERG or cMYC or AR genes.
- FIG. 9 Microscopy images illustrating in the 1975 bronchial cancer cell line the method combining on ISET filter the immunofluorescence labeling (cMet / CD45 / DAPI) and FISH; 9A: 3-Color Immunofluorescence Detection of cMET Protein; 9B: Detection of cMET amplification; 9C: Method combining immunofluorescence labeling and FISH.
- the blood sample is enriched in CTC by filtration based on the ISET technique (isolation by size of epithelial tumors).
- the filters are subjected to very low pressure filtration on the ISET machine (7mBar), then dried on a hot plate at 45 ° C for 2 min.
- the filters are wrapped in aluminum foil and then frozen.
- the cells are identified by immunofluorescent staining, on ISET filter, nuclei, cytokeratin, CD45 and ALK protein.
- 1X EDTA buffer pH9 is prepared from 10X EDTA and then warmed to 98 ° C. Preparation of the antibodies:
- the antibodies are diluted in 0.2% TBS-Triton and a total volume of 0 ⁇ .
- the different antibody solutions are prepared independently and then mixed.
- the anti-cytokeratin antibodies (CK A1 / A3 - DAKO) are coupled to the AF546 fluorochrome according to the Zenon IGAF546 kit coupling protocol (Invitrogen).
- Anti-ALK (Novo-Castra) antibodies are coupled to AF488 fluorochrome according to the Zenon IGAF488 kit coupling protocol (Invitrogen).
- the different antibody solutions are pooled and their volume supplemented to 100 ⁇ in 0.4% TBS-Triton.
- the filters are taken out of the freezer and placed at room temperature for about 15 minutes.
- the filters are attached to the blade using high temperature resistant tape, which also identifies the filters.
- the filters are then rehydrated in TBS for 5 minutes and then drained.
- the slides are immersed for 5 min in EDTA buffer 1X pH 9 heated in a water bath at 98 ° C, they are then rinsed for 2 min in TBS and for 1 min in distilled water and then drained. On the filter, the spots (8 mm diameter) are surrounded using DakoPen (hydrophobic). Wet chambers are prepared using an absorbent paper previously passed under tap water. On each spot, 0 ⁇ of the prepared solution of antibodies are deposited, then each spot is covered with a 12mm diameter round blade. All incubated overnight in a humid chamber at 4 ° C and in the dark.
- the chambers are placed at room temperature for 15 min and then rinsed in 0.05% TBS-Tween for 2 min and drained, rinsed in distilled water and then drained.
- DAPI mounting solution 100 ⁇ l of diluted DAPI mounting solution are deposited on each slide, all incubated for 15 min at room temperature and in the dark.
- the slides are then rinsed in 0.05% TBS-Tween for 2 min and then drained, then rinsed in distilled water and drained.
- the slides and coverslips are then mounted fluoromount, after 1 hour at room temperature and in the dark, they are sealed, before being stored at 4 ° C.
- the reading is performed under the microscope the next day, the CTCs are identified, and their positions are stored.
- Example 3 Test for Detection of the EML4-ALK Fusion Gene by the FISH Technique This test is carried out after the immunofluorescence labeling.
- the blade and coverslip system is disassembled and the filter is washed in a 1X PBS solution before being fixed with a solution of methanol / acetic acid (9: 1) for 2 hours at room temperature. room.
- a solution of 80 ml of 0.01 N HCl (8 ml 0.1N HCl + 72 ml H 2 O) is preheated in a 37 ° C water bath.
- the slides kept at + 4 ° C. are incubated for 5 min in a bath of 4xSSCT.
- pepsin is added to the 0.01 N HCl at 37 ° C.
- the filter is incubated for a few minutes in the pepsin solution, shaking it every two minutes.
- a fixing solution, formaldehyde of final concentration 1%, is prepared extemporaneously.
- the resulting solution is stable for a day.
- the slides are washed in a 1X PBS for 5 minutes without moistening the adhesive tape and without agitation.
- the slides are then fixed by soaking for 2 minutes in the fixing solution, without moistening the adhesive tape.
- the slides are then dehydrated successively for two minutes at 70%, 85% and 100% ethanol, without allowing the slides to dry between the alcohols.
- the back of the blade is wiped gently, the dryer then dries for a few minutes, and for a maximum of one hour, on a plate at 37 ° C, or dry at room temperature.
- an airtight box is placed on the lit plate at 37 ° C, this box will allow the possible transport of the blade.
- the hybridization apparatus, or hybridizer is turned on and programmed to obtain a temperature of 37 ° C.
- the blades are inserted, in their respective places, in ⁇ "hybridizer".
- the two strips on the cover are moistened with water, and then replaced on the cover of the hybridizer to minimize evaporation of the probe.
- the blade is placed on the platen at 37 ° C.
- On each spot (8 mm in diameter) are deposited ⁇ of hybridization mixture probe ALK (Vysis) (for each spot are deposited 7 ⁇ of buffer, 2 ⁇ of water, 1 ⁇ of probe).
- a small round blade (12 mm in diameter) is placed gently on the spots.
- the area of interest is sealed with glue placed around it to completely isolate this area.
- the glue is dried by depositing the slide on the plate at 37 ° C. for about 5 minutes.
- the slide is then immediately placed in the hybridizer so as not to change the temperature of the probe.
- the denaturation program is started at 85 ° C for 10 min, then hybridization typically takes place at 44 ° C overnight (12 hours) at 44 ° C.
- This hybridization can be carried out in the hybridizer or in an oven placed at 44 ° C. In the latter case, after the step at 85 ° C, the blade is very quickly placed in the box already at 37 ° C on the platen, then transferred into the special wet black box set in advance in the oven. 44 ° C.
- the water bath is connected at 65 ° C and the plate at 37 ° C, Dako Wash Buffer 1X buffer is prepared extemporaneously.
- the buffer is then preheated, placing half of the buffer in a porcelain tray which is placed in the water bath at 65 ° C without the temperature being reached (to avoid thermal shock), the temperature is reached at the end about 30 min.
- the other half of the buffer is placed in a slide tray at room temperature.
- the blade is extracted from the hybridizer or oven and transported if necessary into a special black box to protect the blade from light. Without light, the glue is removed very gently with pliers, without damaging the filter.
- the slide is washed for about 7 minutes in the Stringent Wash Buffer at room temperature without agitation.
- the slide is washed for 5 min in the preheated buffer at 65 ° C. and then for 5 min in Wash Buffer 1X DAKO wash buffer at room temperature.
- the slide is dehydrated for 2 min with successively 70%, 85% 100% ethanol, without letting it dry between the alcohols.
- the back of the blade is wiped gently with absorbent paper, then allowed to dry for a few minutes on the plate at 37 ° C, checking that no alcohol remains between the blade and the filter.
- the slides can be rewashed at 70 ° C for 1-5 min.
- the blades are covered by a slat of 22x22 or 24x40, the whole is sealed on one side of the slat, on the opposite side to the spot.
- the slide is dried on the hot plate at 37 ° C for about 5 minutes.
- the slide is transported in a black box to the microscope, and observed using successively x20 magnifications, to spot the spot, then x100, with immersion oil.
- the slide can be kept in the dark for 1 week at room temperature or for 1 year at -20 ° C.
- the reading is carried out under a fluorescence microscope or scanner. CTCs are relocated from the positions already identified during immunostaining.
- This test is performed after immunofluorescence staining.
- a solution of 80 ml of 0.01 N HCl (8 ml 0.1N HCl + 72 ml H 2 O) is preheated in a 37 ° C water bath for at least 30 minutes.
- the slides kept at + 4 ° C are incubated successively for 5 min in a bath of 4xSSCT to take off the coverslip, if necessary the slide can be peeled off using a clamp, the mounting medium is removed and the filter is rinsed off in a 1X PBS bath.
- pepsin is added to the 0.01N HCl, at 37 ° C, the whole is thoroughly mixed. The filter is incubated for 6 min in the pepsin solution, shaking it every two minutes.
- a fixing solution containing 1% formaldehyde is prepared extemporaneously.
- the slides are washed in a tub of PBS x for 5 minutes without moistening the adhesive tape and without agitation.
- the slides are then fixed by soaking for 2 minutes in the fixing solution, without moistening the adhesive tape.
- the slides are then dehydrated successively for two minutes at 70%, 85% and 100% ethanol, without allowing the blades to dry between the alcohols.
- the backside of the blade is wiped gently, the filter then dries for a few minutes, and at most for one hour, on a plate at 37 ° C, or it dries at room temperature.
- J1 Denaturation of slides and hybridization
- the Hybridizer is turned on and programmed to obtain a temperature of 37 ° C.
- the blades are inserted in their respective places in the "hybridizer".
- the two strips on the cover are moistened with water, and then replaced on the cover of the hybridizer to minimize evaporation of the probe.
- the blade is placed on the platen at 37 ° C.
- On each spot (8 mm in diameter) are deposited 6 ⁇ of probe HER-2 (Dako).
- a small round blade (12 mm in diameter) is placed gently on the spots. Any bubbles are pushed gently outside the surface of the slat, for example with a cone.
- the area of interest is sealed with glue placed around it, such as Rubber-cement, to completely isolate this area.
- the glue is dried by depositing the blade on the plate at 37 ° C for about 5 minutes, the perfect quality of the gluing on the edges is verified.
- the slide is then immediately placed in the hybridizer so as not to change the temperature of the probe.
- the denaturation program is started at 85 ° C for 10 minutes, followed by hybridization at 44 ° C overnight (12 hours) at 44 ° C.
- This hybridization can be carried out in the hybridizer or in an oven placed at 44 ° C. In the latter case, after the step at 85 ° C, the blade is very quickly placed in the box already at 37 ° C on the platen, then transferred into the special wet black box set in advance in the oven. 44 ° C.
- Dako Wash Buffer 1X buffer is prepared extemporaneously.
- the buffer is then preheated, placing half of the buffer in a porcelain tray which is placed in the water bath at 65 ° C without the temperature being reached (to avoid thermal shock), the temperature is reached at the end about 30 min.
- the other half of the buffer is placed in a slide tray at room temperature.
- the blade is extracted from the hybridizer or oven and transported if necessary into a special black box to protect the blade from light. Without light, the glue is removed very gently with pliers, without damaging the filter.
- the slide is washed for about 7 minutes in the Stringent Wash Buffer at room temperature without agitation.
- the slide is washed for 5 min the slide in the buffer preheated to 65 ° C, then 5 min in Wash Buffer Wash buffer 1X DAKO at room temperature.
- the slide is dehydrated for 2 min with successively 70%, 85% 100% ethanol, without letting it dry between the alcohols.
- the back of the blade is wiped gently with absorbent paper, then allowed to dry for a few minutes on the plate at 37 ° C, checking that no alcohol remains between the blade and the filter.
- the slides can be rewashed at 70 ° C for 1-5 min.
- the blades are covered by a slat of 22x22 or 24x40, the whole is sealed on one side of the slat, on the opposite side to the spot.
- the slide is dried on the hot plate at 37 ° C for about 5 minutes.
- the slide is transported in a black box to the microscope, and observed using successively x20 magnifications, to spot the spot, then x100, with immersion oil.
- the slide can be kept in the dark for 1 week at room temperature or for 1 year at -20 ° C.
- the FISH technique is carried out in the same way as described in Example 4, using a probe specific for c-MET.
- Example 6 Test for Detection of the Erg Gene by the FISH Technique
- the FISH technique is implemented in the same manner as described in Example 4, using a specific Erg probe.
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Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2854930A CA2854930A1 (fr) | 2011-11-17 | 2012-11-19 | Methode de caracterisation de cellules tumorales circulantes et application au diagnostic |
| EP12815731.0A EP2780713A2 (fr) | 2011-11-17 | 2012-11-19 | Méthode de caractérisation de cellules tumorales circulantes et application au diagnostic |
| JP2014541723A JP2014533828A (ja) | 2011-11-17 | 2012-11-19 | 循環腫瘍細胞の特徴を決定する方法及びその診断への応用 |
| US14/358,874 US20140329243A1 (en) | 2011-11-17 | 2012-11-19 | Method for characterizing circulating tumor cells, and use thereof in diagnosis |
| IL232642A IL232642A0 (en) | 2011-11-17 | 2014-05-15 | Method for characterizing circulating tumor cells, and use thereof in diagnosis |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRPCT/FR2011/052688 | 2011-11-17 | ||
| PCT/FR2011/052688 WO2013072571A1 (fr) | 2011-11-17 | 2011-11-17 | Methode de caracterisation de cellules tumorales circulantes et application au diagnostic |
| FRPCT7FR2011/052688 | 2011-11-17 |
Publications (3)
| Publication Number | Publication Date |
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| WO2013072584A2 true WO2013072584A2 (fr) | 2013-05-23 |
| WO2013072584A3 WO2013072584A3 (fr) | 2013-10-24 |
| WO2013072584A8 WO2013072584A8 (fr) | 2015-01-29 |
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| PCT/FR2011/052688 Ceased WO2013072571A1 (fr) | 2011-11-17 | 2011-11-17 | Methode de caracterisation de cellules tumorales circulantes et application au diagnostic |
| PCT/FR2012/000470 Ceased WO2013072584A2 (fr) | 2011-11-17 | 2012-11-19 | Méthode de caractérisation de cellules tumorales circulantes et application au diagnostic |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/FR2011/052688 Ceased WO2013072571A1 (fr) | 2011-11-17 | 2011-11-17 | Methode de caracterisation de cellules tumorales circulantes et application au diagnostic |
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| Country | Link |
|---|---|
| US (1) | US20140329243A1 (fr) |
| EP (1) | EP2780713A2 (fr) |
| JP (1) | JP2014533828A (fr) |
| CA (1) | CA2854930A1 (fr) |
| IL (1) | IL232642A0 (fr) |
| WO (2) | WO2013072571A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015524054A (ja) * | 2012-05-24 | 2015-08-20 | ラールスル | 濾過を通して生物学的サンプルから抽出された又は単離された希少細胞の多重分析のための方法 |
| CN107147477A (zh) * | 2017-07-07 | 2017-09-08 | 河南辉煌科技股份有限公司 | Ctcs‑2级列车应答器报文快速编码解码实现方法 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6582486B2 (ja) * | 2015-03-27 | 2019-10-02 | コニカミノルタ株式会社 | 血液中の稀少細胞検出方法 |
| CN107418999A (zh) * | 2016-05-23 | 2017-12-01 | 益善生物技术股份有限公司 | ROS1、C-met基因异常检测试剂盒及检测方法 |
| JP7326764B2 (ja) * | 2018-03-09 | 2023-08-16 | 東ソー株式会社 | 腫瘍マーカーならびに腫瘍細胞を夾雑細胞と区別して回収および検出する方法 |
| JP7521750B2 (ja) * | 2020-01-14 | 2024-07-24 | 学校法人杏林学園 | 上皮系マーカー陰性の腫瘍細胞を検出する方法 |
| JP7593584B2 (ja) * | 2020-03-10 | 2024-12-03 | 学校法人杏林学園 | 腫瘍細胞マーカー、および腫瘍細胞を検出または回収する方法 |
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|---|---|---|---|---|
| US9134237B2 (en) * | 2005-09-20 | 2015-09-15 | Janssen Diagnotics, LLC | High sensitivity multiparameter method for rare event analysis in a biological sample |
| US20110189670A1 (en) * | 2008-07-07 | 2011-08-04 | Ruth L Katz | Circulating Tumor and Tumor Stem Cell Detection Using Genomic Specific Probes |
-
2011
- 2011-11-17 WO PCT/FR2011/052688 patent/WO2013072571A1/fr not_active Ceased
-
2012
- 2012-11-19 JP JP2014541723A patent/JP2014533828A/ja active Pending
- 2012-11-19 US US14/358,874 patent/US20140329243A1/en not_active Abandoned
- 2012-11-19 CA CA2854930A patent/CA2854930A1/fr not_active Abandoned
- 2012-11-19 WO PCT/FR2012/000470 patent/WO2013072584A2/fr not_active Ceased
- 2012-11-19 EP EP12815731.0A patent/EP2780713A2/fr not_active Withdrawn
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015524054A (ja) * | 2012-05-24 | 2015-08-20 | ラールスル | 濾過を通して生物学的サンプルから抽出された又は単離された希少細胞の多重分析のための方法 |
| CN107147477A (zh) * | 2017-07-07 | 2017-09-08 | 河南辉煌科技股份有限公司 | Ctcs‑2级列车应答器报文快速编码解码实现方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140329243A1 (en) | 2014-11-06 |
| WO2013072571A1 (fr) | 2013-05-23 |
| CA2854930A1 (fr) | 2013-05-23 |
| IL232642A0 (en) | 2014-06-30 |
| JP2014533828A (ja) | 2014-12-15 |
| EP2780713A2 (fr) | 2014-09-24 |
| WO2013072584A8 (fr) | 2015-01-29 |
| WO2013072584A3 (fr) | 2013-10-24 |
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