WO2010117010A1 - 腫瘍マーカーおよびその利用 - Google Patents
腫瘍マーカーおよびその利用 Download PDFInfo
- Publication number
- WO2010117010A1 WO2010117010A1 PCT/JP2010/056293 JP2010056293W WO2010117010A1 WO 2010117010 A1 WO2010117010 A1 WO 2010117010A1 JP 2010056293 W JP2010056293 W JP 2010056293W WO 2010117010 A1 WO2010117010 A1 WO 2010117010A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- snx5
- antibody
- human
- detecting
- tissue
- Prior art date
Links
Images
Classifications
-
- 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
- G01N33/574—Immunoassay; Biospecific binding assay; Materials therefor for cancer
- G01N33/57407—Specifically defined cancers
-
- 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
-
- 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
- C12Q2600/112—Disease subtyping, staging or classification
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/04—Endocrine or metabolic disorders
- G01N2800/046—Thyroid disorders
Definitions
- the present invention relates to a tumor marker and use thereof, and more particularly, to a tumor marker detection method suitable for diagnosis of papillary thyroid cancer and a tool used in the method.
- Papillary thyroid cancer is the most frequently occurring malignant tumor among thyroid cancers, and it can have a poor prognosis if it metastasizes to the lungs or cervical lymph nodes. Therefore, a definitive diagnosis of papillary thyroid cancer is very important. Histopathological examination is indispensable for the definitive diagnosis of papillary thyroid cancer. However, because there are many malignant tumors with papillary structures other than papillary thyroid cancer, not only whether the lesion is primary, but also the tumorous lesions of lymph node metastasis are determined. It is very difficult.
- the characteristics of the pathological tissue of papillary thyroid cancer are evaluated by the expression pattern of molecules specific to thyroid tissue.
- Known thyroid markers include thyroglobulin and thyroid transcription factor 1 (TTF-1).
- Thyroglobulin is a dimeric glycoprotein secreted from thyroid tissue and is known to increase in cells or blood in thyroid diseases.
- the measurement of the amount of thyroglobulin in the blood is used to observe the progress of thyroid cancer after surgery (especially, the possibility of metastasis).
- the molecules that are reported to be specifically expressed in thyroid tissue there are molecules that are also expressed in other organs. Therefore, an excellent tumor marker specific for papillary thyroid cancer is eagerly desired.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a tumor marker specific for papillary thyroid cancer and a technique for discriminating thyroid papillary cancer using the tumor marker. .
- SNX5 As a result of producing an antibody against human SNX5 protein and performing immunohistochemical staining for various human normal tissues and neoplastic lesions using this anti-human SNX5 antibody, SNX5 was found in follicular epithelium of thyroid gland. Responds specifically and is particularly responsive to papillary thyroid cancer, a malignant tumor derived from the thyroid gland, as well as thyroid cancers of other histological types, papillary carcinoma derived from the digestive tract, and papillae derived from the lungs The present inventors have found that almost no expression of SNX5 is observed in thyroid carcinomas, and have completed the present invention.
- the method according to the present invention is a method for detecting a tumor marker, and includes a step of detecting SNX5 in a subject sample.
- the subject sample is preferably a tissue collected from the subject or a culture or a slice thereof, but may be a cell lysate prepared from a tissue collected from the subject or a culture thereof.
- the tissue is preferably a thyroid tissue, but may be a body fluid such as blood.
- the subject is preferably a patient who may have thyroid disease, but may be a patient who has already developed papillary thyroid cancer.
- the SNX5 is preferably a SNX5 protein or a fragment thereof.
- the step of detecting SNX5 is preferably an immunoassay using an anti-SNX5 antibody.
- the anti-SNX5 antibody used is preferably an anti-human SNX5 antibody, more preferably an anti-human SNX5 monoclonal antibody, and a mouse anti-human SNX5 monoclonal antibody produced from hybridoma 48C2 or a binding activity equivalent to the antibody. Most preferred is a monoclonal antibody having
- the SNX5 may be a SNX5 gene or a fragment thereof.
- the step of detecting SNX5 is preferably a step of hybridizing a nucleic acid probe to the SNX5 gene or a fragment thereof.
- the nucleic acid probe is preferably a hybridization probe, but may be a PCR primer.
- the method according to the present invention includes both a step of detecting an SNX5 protein or a fragment thereof and a step of detecting an SNX5 gene or a fragment thereof.
- the above method may be a method for providing a diagnostic criterion for papillary thyroid cancer, and may be a method for providing a criterion for differentiation of a malignant tumor exhibiting a papillary morphology.
- the above method may also be a method for providing a criterion for determining whether or not a lesion of papillary thyroid cancer is a primary lesion.
- the above method may be a method for providing a criterion for determining whether or not a tumor having metastasized to a cervical lymph node is derived from the thyroid gland.
- the kit according to the present invention is a kit for detecting a tumor marker and is characterized by comprising an anti-SNX5 antibody.
- the kit according to the present invention preferably further comprises a reagent for detecting the antibody.
- the antibody is preferably an anti-human SNX5 antibody, more preferably an anti-human SNX5 monoclonal antibody, a mouse anti-human SNX5 monoclonal antibody produced from hybridoma 48C2, or a monoclonal antibody having a binding activity equivalent to the antibody. Most preferably.
- the kit according to the present invention is a kit for detecting a tumor marker, and is characterized by comprising an oligonucleotide capable of hybridizing to the SNX5 gene or a fragment thereof.
- the kit according to the present invention preferably further comprises a reagent for detecting the oligonucleotide.
- the oligonucleotide is preferably a hybridization probe for the SNX5 gene or a fragment thereof, but may be a PCR primer.
- the kit is preferably a kit for providing a diagnostic standard for papillary thyroid cancer, but may also be a kit for providing a criterion for identifying a malignant tumor exhibiting a papillary morphology.
- the kit may be a kit for providing a criterion for determining whether or not a lesion of papillary thyroid cancer is a primary lesion.
- the kit may be a kit for providing a criterion for determining whether or not a tumor with cervical lymph node metastasis originates from the thyroid gland.
- the present invention it is possible to detect a tumor marker suitable for diagnosis of whether or not it is papillary thyroid cancer.
- SNX5 is highly expressed in papillary thyroid cancer, which is a malignant tumor derived from the thyroid gland, but thyroid cancer exhibiting other tissue types, papillary adenocarcinoma derived from the digestive tract It was found that almost no expression was observed in lung-derived papillary adenocarcinoma.
- SNX5 Human sorting nexin-5
- Patent Document 1 lists many gene candidates related to multiple myeloma, and one of them is SNX5.
- Patent Document 2 lists many candidates for tumor-related peptides (antigen peptides) that bind MHC molecules, and one of them is a partial fragment of SNX5 protein (amino acids 292 to 300: SEQ ID NO: 524 of Patent Document 2). Is listed.
- the specificity of SNX5 in papillary thyroid cancer is not disclosed or suggested in any literature.
- the present invention provides an excellent tumor marker for papillary thyroid cancer.
- tumor marker The present invention provides an excellent tumor marker for papillary thyroid cancer.
- the tumor marker of the present invention is SNX5 protein or a fragment thereof.
- the tumor marker of the present invention is the SNX5 gene or a fragment thereof.
- a SNX5 protein is a polypeptide consisting of the amino acid sequence shown in SEQ ID NO: 1; alternatively, one or several amino acids of the amino acid sequence shown in SEQ ID NO: 1 are deleted, substituted or A polypeptide comprising an added amino acid sequence and having SNX5 activity.
- the SNX5 protein is a polypeptide encoded by a polynucleotide consisting of the nucleotide sequence shown in SEQ ID NO: 2; a nucleotide in which one or several bases of the nucleotide sequence shown in SEQ ID NO: 2 are deleted, substituted or added
- a polypeptide encoded by a polynucleotide comprising the sequence and having SNX5 activity a polypeptide encoded by a polynucleotide capable of hybridizing under stringent conditions with the polynucleotide comprising the nucleotide sequence shown in SEQ ID NO: 2 and having SNX5 activity
- it may be a polypeptide encoded by a polynucleotide having a homology of 80% or more with the polynucleotide consisting of the nucleotide sequence shown in SEQ ID NO: 2 and having SNX5 activity.
- polypeptide amino acid
- “one or several” is preferably in the range of 1 to 30, more preferably in the range of 1 to 20, and more preferably 1 to 10 More preferably, it is in the range of 1 to 5, and still more preferably in the range of 1 to 5.
- a person skilled in the art can easily understand the extent of the number of amino acids indicated by the term “one or several” depending on the length of the target polypeptide.
- one or several is preferably in the range of 1 to 100, more preferably in the range of 1 to 50, and 1 to 30 More preferably, it is within the range of 1 to 15, and still more preferably within the range of 1 to 15.
- the term “one or several” is preferably in the range of 1 to 10, more preferably in the range of 1 to 7, more preferably 1 to 5 More preferably, it is within the range, and still more preferably within the range of 1 to 3.
- the homology for the polypeptide or polynucleotide of interest is preferably 80% or more, more preferably 85% or more, and more preferably 90% or more. Preferably, it is more preferably 95% or more.
- SNX5 activity intends the ability to bind to an anti-SNX antibody elicited using a polypeptide consisting of the amino acid sequence shown in SEQ ID NO: 1 as an antigen.
- the SNX antibody may be an anti-SNX5 antibody described later, and a 48C2 antibody described later is preferable.
- the polypeptide may be a recombinant human SNX5 protein or an isolated and purified natural human SNX5 protein.
- the SNX5 gene is a polynucleotide that encodes a polypeptide consisting of the amino acid sequence shown in SEQ ID NO: 1, or alternatively one or several amino acids of the amino acid sequence shown in SEQ ID NO: 1
- the SNX5 gene is a polynucleotide consisting of the nucleotide sequence shown in SEQ ID NO: 2, a nucleotide sequence in which one or several bases of the nucleotide sequence shown in SEQ ID NO: 2 are deleted, substituted or added, and SNX5 activity
- a polynucleotide encoding a polypeptide having SNX5 activity a polynucleotide capable of hybridizing under stringent conditions with a polynucleotide comprising the nucleotide sequence shown in SEQ ID NO: 2;
- it may be a polynucleotide that is a polynucleotide having a homology of 80% or more with the polynucleotide comprising the nucleotide sequence shown in SEQ ID NO: 2 and encoding a polypeptide having SNX5 activity.
- SEQ ID NO: 1 is the amino acid sequence of SNX5 registered in GenBank (accession number AF121855)
- SEQ ID NO: 2 is the nucleotide sequence encoding the amino acid sequence shown in SEQ ID NO: 1
- GenBank (accession number) AF121855) corresponds to the open reading frame (positions 181 to 1395) of the nucleotide sequence of SNX5 (SEQ ID NO: 3) registered in AF121855).
- polypeptide is used interchangeably with “peptide” or “protein” and is intended to be a polymer of amino acids.
- fragment of a polypeptide is intended to be a partial fragment of the polypeptide.
- the polypeptides according to the invention may also be produced recombinantly, chemically synthesized or isolated from natural sources.
- polynucleotide is used interchangeably with “gene”, “nucleic acid” or “nucleic acid molecule” and is intended to be a polymer of nucleotides.
- a “fragment” of a polynucleotide is intended to be a partial fragment of the polynucleotide.
- nucleotide sequence is used interchangeably with “nucleic acid sequence” or “base sequence”.
- the polynucleotide according to the present invention may exist in the form of RNA (for example, mRNA) or in the form of DNA (for example, cDNA or genomic DNA).
- DNA can be double-stranded or single-stranded.
- Single-stranded DNA or RNA can be the coding strand (also known as the sense strand) or it can be the non-coding strand (also known as the antisense strand).
- oligonucleotide is intended to be a combination of several to several tens of nucleotides, and is used interchangeably with “polynucleotide”.
- the term “stringent (hybridization) conditions” refers to a hybridization solution (50% formamide, 5 ⁇ SSC (150 mM NaCl, 15 mM trisodium citrate), 50 mM phosphorous. After overnight incubation at 42 ° C. in sodium acid (pH 7.6), 5 ⁇ Denhardt's solution, 10% dextran sulfate, and 20 ⁇ g / ml denatured sheared salmon sperm DNA, Although it is intended to wash the filter in 1 ⁇ SSC, the washing conditions at high stringency are appropriately changed depending on the polynucleotide to be hybridized. For example, when using mammalian DNA, 0.1% SDS Washing at 65 ° C.
- the tumor marker of the present invention it is possible to provide a criterion for determining a malignant tumor exhibiting papillary morphology, so that it is easy to diagnose whether or not it is papillary thyroid cancer.
- the present invention is very effective in determining whether or not a lesion is a primary lesion. Furthermore, by using the present invention, it is possible to more clearly determine whether a tumor that has metastasized to the cervical lymph node is derived from the thyroid gland or another tissue (lung, mammary gland, etc.).
- the present invention provides a method for detecting a tumor marker.
- the tumor marker detection method according to the present invention includes a step of detecting SNX5 in a subject sample.
- the detection method according to the present invention includes a step of detecting SNX5 protein or a fragment thereof.
- the detection method according to the present invention includes a step of detecting an SNX5 gene or a fragment thereof.
- a “subject sample” is intended any tissue (including bodily fluids such as blood) or cells collected from a subject, and tissue sections or cells prepared therefrom. Lysates can also be included in the subject sample.
- Preferred subject samples for use in the present invention include, but are not limited to, tumor tissue and serum.
- the process of taking out a tissue or a cell directly from a subject as a first stage of sample acquisition is performed by a doctor and is outside the scope of the present invention.
- the step of determining whether or not the disease is a disease using the result obtained by the method of the present invention is also performed by a doctor and is outside the scope of the present invention.
- the subject to be the subject of the present invention is preferably a patient who may suffer from thyroid disease, more preferably a patient who develops papillary thyroid cancer, but may be a normal patient.
- the subject sample is thyroid tissue or a culture thereof collected from a patient who may have thyroid disease, or a tissue section or cell lysate prepared therefrom.
- the procedure for obtaining a sample can be appropriately selected depending on the desired tissue or cell.
- the step of detecting SNX5 may be an immunoassay using an anti-SNX5 antibody.
- immunoassay intends an assay performed utilizing an immunological binding reaction based on an antigen-antibody reaction.
- Assays that utilize immunological binding reactions include immunohistochemistry, immunoelectron microscopy, western blot, immunoprecipitation, sandwich ELISA assay, radioimmunoassay, and antibody assay (eg, immunodiffusion assay), and affinity chromatography Etc. These techniques are well known in the art, and those skilled in the art can easily carry out the present invention.
- the anti-SNX5 antibody is preferably an anti-human SNX5 antibody, more preferably a monoclonal antibody, and more preferably a mouse anti-human SNX5 monoclonal antibody (also referred to as 48C2 antibody) produced from hybridoma 48C2.
- 48C2 antibody recognizes the N-terminal side of human SNX5 protein (positions 1 to 177 of SEQ ID NO: 1: SEQ ID NO: 10) (results not shown).
- the “SNX5 protein fragment” is a polypeptide consisting of a partial sequence of the amino acid sequence shown in SEQ ID NO: 1, and the amino acid sequence shown in SEQ ID NO: 10 or an amino acid sequence consisting of 8 or more consecutive amino acids thereof. It is preferable that it is polypeptide containing.
- monoclonal antibodies having binding properties equivalent to those of the 48C2 antibody are also within the range of antibodies suitably used in the present invention.
- the immunoassay can be immunohistochemical staining.
- the immunoassay may be a Western blot.
- the subject sample is blood collected from the subject, the immunoassay can be an ELISA.
- the mouse anti-human SNX5 monoclonal antibody produced from the hybridoma 48C2 is not only suitable for detecting SNX5 protein by Western blotting or SNX5 protein in formalin-fixed paraffin sections, but also for identifying SNX5 protein in paraform-fixed tissues I made it. So far, the function of SNX5 in the cytoplasm has been reported. Even when this mouse anti-human SNX5 monoclonal antibody was used, it was shown that SNX5 was localized in the cytoplasm. This supports the specificity of this mouse anti-human SNX5 monoclonal antibody.
- Hybridoma 48C2 is maintained under the control of the Hokkaido University of Medicine Sapporo Medical University Intellectual Property Management Office (060-8556, Minami 1 Nishi 17-chome, Chuo-ku, Sapporo) and should be sold as needed. Is possible.
- Immunohistochemical examination is very important when performing histopathological diagnosis of malignant tumors.
- a tumor marker specific to a specific organ or tissue By using a tumor marker specific to a specific organ or tissue, it becomes easy to make a definitive diagnosis of a metastatic lesion whose primary lesion has not yet been established, and a diagnosis or treatment policy can be quickly determined.
- Various organ-specific molecular markers have been found so far, but antibodies actually used for histopathological diagnosis are limited. In particular, an antibody suitable for differentiating papillary thyroid cancer has not yet been found.
- the step of detecting SNX5 can be a step of hybridizing a nucleic acid probe to the SNX5 gene or a fragment thereof.
- the “nucleic acid probe” is not particularly limited as long as it can hybridize to a target nucleic acid, and may be a so-called hybridization probe or a PCR primer.
- Hybridization techniques and PCR techniques are well known in the art and one of ordinary skill in the art can readily practice the invention.
- the subject sample is a tissue sample collected from the subject, various techniques known in the art can be employed, for example, in situ hybridization technology, in situ PCR technology, or the like.
- a conventional PCR technique can be employed.
- the nucleic acid probe is not particularly limited as long as it is an oligonucleotide containing a partial sequence of the SNX5 gene (or its complementary strand), and may be an oligonucleotide consisting of the nucleotide sequence shown in SEQ ID NO: 4 or 5 or its complementary sequence, It may be an oligonucleotide consisting of the nucleotide sequence shown in SEQ ID NOs: 6 to 9 or its complementary sequence. Further, since the 48C2 antibody recognizes the N-terminal side of the human SNX5 protein, the nucleic acid probe may be an oligonucleotide encoding the “SNX5 protein fragment”.
- the nucleic acid probe is preferably an oligonucleotide consisting of 15 to 50 consecutive bases of the nucleotide sequence shown in SEQ ID NO: 1 or its complementary sequence, more preferably 20 to 50, and still more preferably An oligonucleotide consisting of 20 to 45, most preferably 25 to 40 consecutive bases.
- the nucleic acid probe is preferably an oligonucleotide consisting of 15 to 50 consecutive bases of the nucleotide sequence shown in SEQ ID NO: 1 or its complementary sequence, more preferably 15 An oligonucleotide consisting of ⁇ 40, more preferably 15-35, most preferably 25-35 consecutive bases.
- the detection method according to the present embodiment includes the step of detecting the SNX5 gene, it is more preferable to further include the step of detecting the SNX5 protein described above.
- the method for detecting a tumor marker according to the present invention it is possible to provide a criterion for determining a malignant tumor exhibiting a papillary morphology, so that it is easy to diagnose whether or not it is papillary thyroid cancer. .
- the present invention is very effective in determining whether or not a lesion is a primary lesion. Furthermore, by using the present invention, it is possible to more clearly determine whether a tumor that has metastasized to the cervical lymph node is derived from the thyroid gland or another tissue (lung, mammary gland, etc.).
- the method according to the present invention can also be a method that provides a diagnostic criterion for papillary thyroid cancer (for example, a method for obtaining data for diagnosing papillary thyroid cancer). It may also be a method of providing a criterion (for example, a method of acquiring data for distinguishing a malignant tumor exhibiting a papillary morphology). Further, the method according to the present invention provides a criterion for determining whether or not a lesion of papillary thyroid cancer is a primary lesion (for example, for determining whether or not a lesion of papillary thyroid cancer is a primary lesion). It can also be a method of acquiring data.
- a diagnostic criterion for papillary thyroid cancer for example, a method for obtaining data for diagnosing papillary thyroid cancer. It may also be a method of providing a criterion (for example, a method of acquiring data for distinguishing a malignant tumor exhibiting a papillary morphology). Further, the method according
- the method according to the present invention provides a criterion for determining whether or not a tumor with cervical lymph node metastasis originates from the thyroid gland (for example, whether or not a tumor with cervical lymph node metastasis originates from the thyroid gland). It may also be a method of acquiring data for determination.
- the present invention provides a kit for detecting a tumor marker.
- the kit according to the present invention is characterized by comprising a tool for detecting SNX5 in a subject sample.
- kit is intended as a package with a container (eg, bottle, plate, tube, dish, etc.) containing a particular material, but as a composition. Forms containing the material in the substance are also encompassed by the term “kit”.
- the kit preferably includes instructions for using each material.
- “comprising” is intended to mean being contained in any of the individual containers that make up the kit.
- the kit which concerns on this invention may be the packaging which packed several different compositions in one, and in the case of a solution form, you may enclose in the container.
- the kit according to the present invention may comprise substance A and substance B mixed in the same container or in separate containers.
- the “instructions” may be written or printed on paper or other media, or may be affixed to electronic media such as magnetic tape, computer readable disk or tape, CD-ROM, etc. .
- the kit according to the present invention may also include a container containing a diluent, a solvent, a washing solution or other reagent.
- the kit according to the present invention may include instruments and reagents necessary for collecting a subject sample.
- the kit according to the present invention may be equipped with instruments and reagents necessary for preparing a section or cell lysate from a subject sample.
- the kit according to the present invention includes an antibody for detecting SNX5 protein or a fragment thereof.
- the antibody is preferably an anti-human SNX5 antibody, more preferably an anti-human SNX5 monoclonal antibody, a mouse anti-human SNX5 monoclonal antibody produced from hybridoma 48C2, or a monoclonal antibody having a binding activity equivalent to the antibody.
- the kit according to the present invention preferably further comprises a reagent for detecting the above-described antibody, but as described above, a composition containing an antibody for detecting the SNX5 protein or a fragment thereof. May be provided as
- the detection kit according to the present invention includes an oligonucleotide for detecting the SNX5 gene or a fragment thereof.
- the oligonucleotide is preferably an oligonucleotide that can hybridize to the SNX5 gene or a fragment thereof, and is preferably a hybridization probe or a PCR primer for the SNX5 gene or a fragment thereof.
- the kit according to the present invention preferably further comprises a reagent for detecting the oligonucleotide, but as described above, it contains an oligonucleotide for detecting the SNX5 gene or a fragment thereof. It may be provided as a composition.
- the kit according to the present invention is preferably a kit for providing a diagnostic criterion for papillary thyroid cancer, but may also be a kit for providing a criterion for identifying a malignant tumor exhibiting a papillary morphology.
- the kit according to the present invention may also be a kit for providing a criterion for determining whether or not a lesion of papillary thyroid cancer is a primary lesion.
- the kit according to the present invention may be a kit for providing a criterion for determining whether or not a tumor that has metastasized to a cervical lymph node is derived from the thyroid gland.
- an object of the present invention is to provide a tumor marker and to provide a diagnostic criterion for papillary thyroid cancer by detecting the tumor marker.
- the obtained human SNX5 cDNA was inserted into an expression vector for Escherichia coli pET3c (Novagen) and a mammalian expression vector pCMV-HA (BD Bioscience) to prepare pET3c-SNX5 and pCMV-HA-SNX5, respectively.
- pCMV-HA-SNX5 FW is obtained by ligating a restriction enzyme site or the like to the sequence of the 5 ′ region of human SNX5 cDNA (ATGGCCGCGGTTCCCGAG (SEQ ID NO: 6)), and pCMV-HA-SNX5 RV is human SNX5 cDNA.
- a restriction enzyme site or the like is ligated to the complementary sequence of the 3 ′ region sequence (ataactgatatgccttcac (SEQ ID NO: 7)).
- E. coli BL21 introduced with pET3c-SNX5 was cultured, and protein synthesis was induced by IPTG. Subsequently, human SNX5 protein was separated / concentrated from the bacterial cell components. The obtained protein was used as an immunogen, and 6-8 week old Balb / c mice were immunized intraperitoneally (100 ⁇ g) using complete adjuvant (primary immunization only) or incomplete adjuvant (second and subsequent immunizations) as an adjuvant. /individual). Booster immunization was performed every other week for 2 months, and final immunization was performed 3 days before the collection of splenocytes.
- the collected spleen cells were fused with NS0 mouse myeloma cells using polyethylene glycol, and the fused cells were cultured in a 96-well plate in RPMI1640 medium containing HAT and 10% FBS for 2 to 3 weeks.
- the anti-human SNX5 monoclonal antibody was screened by Western blotting using the culture supernatant.
- PCMV-SNX5 was introduced into human 293 cells cultured in DMEM containing 10% FBS and penicillin / streptomycin according to the manufacturer's instructions.
- the expression of SNX5 in the transformant was performed using the total RNA extracted from the transformant as a template, the forward primer (SNX5 AMP FW: 5'-ccggttaaagagcaaagacg-3 '(SEQ ID NO: 8)) and the reverse primer (SNX5 AMP It was confirmed by RT-PCR using RV: 5′-agctctgcaaaagggagaca-3 ′ (SEQ ID NO: 9)).
- FIG. 2 shows a cell into which pCMV-SNX5 was introduced (left) and a cell into which pCMV was introduced as a negative control (right). It can be seen that the anti-human SNX5 monoclonal antibody specifically reacts with SNX5.
- FIG. 3 shows that when an anti-human SNX5 monoclonal antibody was performed using formalin-fixed paraffin-embedded sections of adenocarcinoma tissue. Signals were detected using an automatic immunostaining device (manufactured by DAKO) (FIG. 3). As shown in FIG. 3 (a), strong expression of SNX5 was observed in papillary thyroid cancer. However, no expression of SNX5 was observed in lung adenocarcinoma (FIG. 3 (b)) and breast adenocarcinoma (FIG. 3 (c)) (FIG. 3 (b)).
- FIG. 4 shows that in immunohistochemical staining using formalin-fixed paraffin sections of papillary thyroid cancer, strong expression of SNX5 was observed in tumor cells.
- the present inventors found for the first time that SNX5 is highly expressed in papillary thyroid cancer.
- the mouse anti-human SNX5 monoclonal antibody established by the present inventors has enabled immunohistochemical analysis of not only formalin-fixed paraffin sections but also paraform-fixed tissues.
- the knowledge obtained by the present invention is that SNX5 is considered to be an excellent marker compared with known thyroid markers such as thyroglobulin and TTF-1, and can provide useful information in pathological diagnosis. Conceivable.
- serodiagnosis of neoplastic lesions derived from the thyroid gland is considered possible by ELISA using an anti-human SNX5 monoclonal antibody.
- the use of the present invention facilitates early diagnosis and definitive diagnosis of papillary thyroid cancer.
- the present invention providing such an excellent tool can be used in the fields of medicine and pharmacy and can greatly contribute to the development of pharmaceuticals and biochemical reagents.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Zoology (AREA)
- Urology & Nephrology (AREA)
- Oncology (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Physics & Mathematics (AREA)
- Hospice & Palliative Care (AREA)
- Wood Science & Technology (AREA)
- Genetics & Genomics (AREA)
- Biochemistry (AREA)
- Hematology (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cell Biology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biophysics (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Peptides Or Proteins (AREA)
Abstract
Description
本発明は、甲状腺乳頭癌についての優れた腫瘍マーカーを提供する。一実施形態において、本発明の腫瘍マーカーはSNX5タンパク質またはそのフラグメントである。他の実施形態において、本発明の腫瘍マーカーはSNX5遺伝子またはそのフラグメントである。
本発明は、腫瘍マーカーの検出方法を提供する。本発明に係る腫瘍マーカーの検出方法は、被験体サンプル中のSNX5を検出する工程を包含することを特徴としている。一実施形態において、本発明に係る検出方法は、SNX5タンパク質またはそのフラグメントを検出する工程を包含する。他の実施形態において、本発明に係る検出方法は、SNX5遺伝子またはそのフラグメントを検出する工程を包含する。
本発明は、腫瘍マーカーを検出するためのキットを提供する。本発明に係るキットは、被験体サンプル中のSNX5を検出するためのツールを備えていることを特徴としている。
ヒトHacaT細胞から抽出した総RNAをテンプレートにして、フォワードプライマー(pCMV-HA-SNX5 FW: 5'-CAGGCCCGAATTCGGATGGCCGCGGTTCCCGAG-3'(配列番号4))およびリバースプライマー(pCMV-HA-SNX5 RV: 5'-GATCTCGGTCGACCGTGAAGGCATATCAGTTAT-3'(配列番号5))を用いたRT-PCRを行い、ヒトSNX5 cDNAを得た。得られたヒトSNX5 cDNAを、大腸菌用発現ベクターpET3c(Novagen)および哺乳動物用発現ベクターpCMV-HA(BD Bioscience)に挿入して、それぞれpET3c-SNX5およびpCMV-HA-SNX5を作製した。なお、pCMV-HA-SNX5 FWは、ヒトSNX5 cDNAの5’領域の配列(ATGGCCGCGGTTCCCGAG(配列番号6))に制限酵素部位等を連結したものであり、pCMV-HA-SNX5 RVは、ヒトSNX5 cDNAの3’領域の配列(ataactgatatgccttcac(配列番号7))の相補配列に制限酵素部位等を連結したものである。
pET3c-SNX5を導入した大腸菌BL21を培養し、IPTGによってタンパク質合成を誘導した。次いで、ヒトSNX5タンパク質を菌体成分から分離/濃縮した。得られたタンパク質を免疫原とし、アジュバントとして完全アジュバント(初回免疫のみ)または不完全アジュバント(2回目以降の免疫)を用いて、6~8週齢のBalb/cマウスを腹腔内免疫した(100μg/個体)。追加免疫を隔週にて2ヶ月間行い、脾細胞を採取する3日前に最終免疫を行った。採取した脾細胞を、ポリエチレングリコールを用いてNS0マウスミエローマ細胞と融合させ、この融合細胞を、96ウェルプレート中にて、HAT、10%FBSを含むRPMI1640培地中にて2~3週間培養した。培養上清を用いたウエスタンブロット法によって、抗ヒトSNX5モノクローナル抗体をスクリーニングした。
10%FBS、ペニシリン/ストレプトマイシンを含むDMEMにて培養したヒト293細胞に、LF2000(インビトロジェン社)を製造業者の手引書に従って、pCMV-SNX5を導入した。なお、形質転換体におけるSNX5の発現を、形質転換体から抽出した総RNAをテンプレートにして、フォワードプライマー(SNX5 AMP FW: 5'-ccggttaaagagcaaagacg-3'(配列番号8))およびリバースプライマー(SNX5 AMP RV: 5'-agctctgcaaaagggagaca-3'(配列番号9))を用いたRT-PCRによって確認した。
pCMV-SNX5を導入したヒト293細胞を、3日間培養した後に0.5% NP-40を含む溶解用緩衝液を用いて可溶化した。可溶化した画分に含まれるタンパク質を5~20%のグラジエントゲルを用いたSDS-PAGEによって分離した。分離したタンパク質をナイロンメンブレンに転写し、抗ヒトSNX5モノクローナル抗体による一次抗体反応、ペルオキシダーゼ複合体化ヤギ抗マウスIgG抗体による二次抗体反応を各々1時間行った。ECLキット(アマシャム社製)を用いて、シグナルを可視化した。
pCMV-SNX5を導入したヒト293細胞を、3日間培養した後にパラホルムアルデヒドにて固定し、一次抗体として抗ヒトSNX5モノクローナル抗体を、2次抗体にはAlexa596を複合体化したヤギ抗マウスIgG抗体を用いて、室温で各々1時間反応させて免疫組織化学染色を行った。IX71蛍光顕微鏡(オリンパス社製)を使用して、シグナルを検出した。図2に、pCMV-SNX5を導入した細胞(左)、ネガティブコントロールとしてpCMVを導入した細胞(右)を示す。抗ヒトSNX5モノクローナル抗体がSNX5と特異的に反応していることがわかる。
被験体から生検によって取得した正常な甲状腺組織、あるいは甲状腺癌を発症している患者から手術によって摘出した甲状腺癌組織から総RNAを抽出し、逆転写酵素(Invitrogen)を用いてcDNAを作製した。次いで、このcDNAを鋳型に用いて、PCRプローブ(製品番号:Hs00429583)を用いた定量的PCR(Applied Biosystems)を行った。得られた値を、ribosomal RNAを対照として解析し、delta delta CT法(ABI 7000、Applied Biosystems)によって比較検討した。なお、ヒト組織の遺伝子解析は、SNX5の発現解析のみに限定し、ヒト組織の使用に際しては、十分なインフォームドコンセントの下で倫理委員会を通じて研究を行った。データの保護には万全の注意を払い、人権の保護および法令を遵守した。
Claims (13)
- 被験体サンプル中のSNX5タンパク質またはそのフラグメントを検出する工程を包含することを特徴とする甲状腺乳頭癌の腫瘍マーカーを検出する方法。
- 上記工程が、抗SNX5抗体を用いる免疫アッセイによって行われることを特徴とする請求項1に記載の方法。
- 上記抗SNX5抗体が、ハイブリドーマ48C2から産生されるマウス抗ヒトSNX5モノクローナル抗体または当該抗体と同等の結合活性を有するモノクローナル抗体であることを特徴とする請求項2に記載の方法。
- 被験体サンプル中のSNX5遺伝子またはそのフラグメントを検出する工程を包含することを特徴とする甲状腺乳頭癌の腫瘍マーカーを検出する方法。
- 上記工程が、核酸プローブを、SNX5遺伝子またはそのフラグメントにハイブリダイズさせることによって行われることを特徴とする請求項4に記載の方法。
- 上記核酸プローブが、配列番号4~9のいずれかに示されるヌクレオチド配列またはその相補配列からなるオリゴヌクレオチドであることを特徴とする請求項5に記載の方法。
- 上記被験体サンプルが、被験体から採取した組織またはその細胞から調製された切片または細胞溶解物であることを特徴とする請求項1~6のいずれか1項に記載の方法。
- 上記組織が甲状腺組織であることを特徴とする請求項7に記載の方法。
- 上記被験体が、甲状腺疾患に罹患している可能性がある患者であることを特徴とする請求項1~8のいずれか1項に記載の方法。
- 抗SNX5抗体を備えていることを特徴とする甲状腺乳頭癌の腫瘍マーカーを検出するためのキット。
- 上記抗SNX5抗体が、ハイブリドーマ48C2から産生されるマウス抗ヒトSNX5モノクローナル抗体または当該抗体と同等の結合活性を有するモノクローナル抗体であることを特徴とする請求項10に記載のキット。
- SNX5遺伝子またはそのフラグメントにハイブリダイズし得るオリゴヌクレオチドを備えていることを特徴とする甲状腺乳頭癌の腫瘍マーカーを検出するためのキット。
- 上記オリゴヌクレオチドが、配列番号4~9のいずれかに示されるヌクレオチド配列またはその相補配列からなることを特徴とする請求項12に記載のキット。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10761709A EP2418490A4 (en) | 2009-04-10 | 2010-04-07 | TUMOR MARKERS AND USE THEREOF |
US13/263,015 US20120129168A1 (en) | 2009-04-10 | 2010-04-07 | Tumor marker and use thereof |
JP2011508374A JPWO2010117010A1 (ja) | 2009-04-10 | 2010-04-07 | 腫瘍マーカーおよびその利用 |
CN2010800141156A CN102365551A (zh) | 2009-04-10 | 2010-04-07 | 肿瘤标记物及其利用 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-095561 | 2009-04-10 | ||
JP2009095561 | 2009-04-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010117010A1 true WO2010117010A1 (ja) | 2010-10-14 |
Family
ID=42936291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/056293 WO2010117010A1 (ja) | 2009-04-10 | 2010-04-07 | 腫瘍マーカーおよびその利用 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120129168A1 (ja) |
EP (1) | EP2418490A4 (ja) |
JP (1) | JPWO2010117010A1 (ja) |
CN (1) | CN102365551A (ja) |
WO (1) | WO2010117010A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109486816B (zh) * | 2018-11-08 | 2021-04-06 | 浙江大学 | 一种用于肿瘤治疗的多聚核苷酸及其应用 |
CN112824540B (zh) * | 2019-11-21 | 2024-06-18 | 上海市肿瘤研究所 | Snx5作为肝癌预后的生物学标志物及其应用 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006133361A2 (en) | 2005-06-08 | 2006-12-14 | The Board Of Trustees Of The University Of Arkansas | Use of gene expression profiling to predict survival in cancer patient |
JP2008500033A (ja) | 2004-05-25 | 2008-01-10 | イマティクス バイオテクノロジーズ ゲーエムベーハー | Mhc分子を結合する腫瘍関連ペプチド |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2527571A1 (en) * | 2003-05-29 | 2004-12-09 | Millennium Pharmaceuticals, Inc. | Compositions, kits, and methods for identification, assessment, prevention, and therapy of breast cancer |
EP1639090A4 (en) * | 2003-06-09 | 2008-04-16 | Univ Michigan | COMPOSITIONS AND METHODS OF TREATMENT AND DIAGNOSIS OF CANCER |
CA3142853A1 (en) * | 2004-05-21 | 2005-12-08 | The Board Of Trustees Of The University Of Arkansas | Use of gene expression profiling to predict survival in cancer patient |
US20070099209A1 (en) * | 2005-06-13 | 2007-05-03 | The Regents Of The University Of Michigan | Compositions and methods for treating and diagnosing cancer |
US20080187930A1 (en) * | 2006-11-07 | 2008-08-07 | Shaughnessy John D | Gene expression profiling based identification of genomic signature of high-risk multiple myeloma and uses thereof |
-
2010
- 2010-04-07 WO PCT/JP2010/056293 patent/WO2010117010A1/ja active Application Filing
- 2010-04-07 CN CN2010800141156A patent/CN102365551A/zh active Pending
- 2010-04-07 JP JP2011508374A patent/JPWO2010117010A1/ja not_active Withdrawn
- 2010-04-07 US US13/263,015 patent/US20120129168A1/en not_active Abandoned
- 2010-04-07 EP EP10761709A patent/EP2418490A4/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008500033A (ja) | 2004-05-25 | 2008-01-10 | イマティクス バイオテクノロジーズ ゲーエムベーハー | Mhc分子を結合する腫瘍関連ペプチド |
WO2006133361A2 (en) | 2005-06-08 | 2006-12-14 | The Board Of Trustees Of The University Of Arkansas | Use of gene expression profiling to predict survival in cancer patient |
Non-Patent Citations (6)
Title |
---|
ANA MERINO-TRIGO: "Sorting nexin 5 is localized to a subdomain of the early endosomes and is recruited to the plasma membrane following EGF stimulation", JOURNAL OF CELL SCIENCE, vol. 117, no. 26, 15 December 2004 (2004-12-15), pages 6413 - 6424, XP055103842 * |
HAO LIU: "Inhibitory regulation of EGF receptor degradation by sorting nexin 5", BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, vol. 342, no. 2, 7 April 2006 (2006-04-07), pages 537 - 546, XP024923705 * |
KYEONG-WON YOO: "Snx5, as a Mind bomb-binding protein, is expressed in hematopoietic and endothelial precursor cells in zebrafish", FEBS LETTERS, vol. 580, no. 18, 7 August 2006 (2006-08-07), pages 4409 - 4416, XP028061280 * |
OTSUKI, T ET AL.: "SNX5, a New Member of the Sorting Nexin Family, Binds to the Fanconi Anemia Complementation Group A Protein", BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, vol. 265, 1999, pages 630 - 635 |
See also references of EP2418490A4 |
TEASDALE, R.D. ET AL.: "A large family of endosome- localized proteins related to sorting nexin 1", BIOCHEM. J., vol. 358, 2001, pages 7 - 16 |
Also Published As
Publication number | Publication date |
---|---|
EP2418490A1 (en) | 2012-02-15 |
US20120129168A1 (en) | 2012-05-24 |
CN102365551A (zh) | 2012-02-29 |
JPWO2010117010A1 (ja) | 2012-10-18 |
EP2418490A4 (en) | 2012-10-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Ross et al. | Breast cancer biomarkers and molecular medicine | |
JP3989528B2 (ja) | Dna配列及びエンコードされた乳房に特異的な乳癌たんぱく質 | |
Zhu et al. | TGFBI protein high expression predicts poor prognosis in colorectal cancer patients | |
EP2962113B1 (en) | Anti-p40 antibodies systems and methods | |
Evans et al. | C35 (C17orf37) is a novel tumor biomarker abundantly expressed in breast cancer | |
EP2213686A1 (en) | Tumor markers and methods of use thereof | |
Armes et al. | AGR2 expression in ovarian tumours: a potential biomarker for endometrioid and mucinous differentiation | |
Varga et al. | Preferential nuclear and cytoplasmic NY-BR-1 protein expression in primary breast cancer and lymph node metastases | |
Ueda et al. | The landscape of MYB/MYBL1-and peri-MYB/MYBL1-associated rearrangements in adenoid cystic carcinoma | |
CN105849565A (zh) | Shon作为癌症预后生物标志物并预测癌症内分泌治疗的疗效 | |
KR20200091076A (ko) | 갑상선암 진단 또는 예후 예측용 adm2 유전자 마커 및 이의 용도 | |
WO2010117010A1 (ja) | 腫瘍マーカーおよびその利用 | |
CN103429617B (zh) | 包含抗-ck8/18复合物自身抗体的标记物及其诊断癌症的用途 | |
JP2022521535A (ja) | 前立腺がんのバイオマーカとしてのbmmf1 repタンパク質の使用 | |
US20220034890A1 (en) | Use of bmmf1 rep protein as a biomarker for breast cancer | |
CN101711281B (zh) | Cthrc1在肝癌诊断中的应用 | |
JP4330372B2 (ja) | 胃癌由来の転移癌細胞の検出方法 | |
JP2007185127A (ja) | 中枢神経系原発悪性リンパ腫マーカーおよびその用途 | |
Monego et al. | Borderline HER‐2 breast cancer cases: Histochemical versus real‐time PCR analysis and impact of different cut‐off values | |
JP2007510424A (ja) | 分子マーカー | |
JP5283085B2 (ja) | 癌診断キットおよび癌診断方法 | |
US9200262B2 (en) | Method for the diagnosis of the presence of an ovarian cancer | |
AU2023269517A1 (en) | Use of bmmf1 rep protein as diagnostic marker for pancreatic cancer and diabetes mellitus type 2 | |
EP4522991A1 (en) | Use of bmmf1 rep protein as diagnostic marker for lung cancer | |
JP2008061536A (ja) | 癌診断方法および癌診断キット |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080014115.6 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10761709 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011508374 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13263015 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010761709 Country of ref document: EP |