CN105969901B - Purposes of the MS4A6A as Huppert's disease diagnosis and treatment marker - Google Patents
Purposes of the MS4A6A as Huppert's disease diagnosis and treatment marker Download PDFInfo
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Abstract
The invention discloses a kind of gene marker, which is MS4A6A.MS4A6A can be used for judging whether subject has the risk for suffering from Huppert's disease or judge whether subject suffers from Huppert's disease.In addition, MS4A6A can be also used for the drug of preparation treatment Huppert's disease.The present invention provides new diagnostic method for the clinical Huppert's disease of diagnosis on a molecular scale, while new drug target is provided for the gene therapy of Huppert's disease.
Description
Technical field
The present invention relates to diagnosing tumor, treatment, prediction prognosis fields, more particularly it relates to detect MS4A6A
Abnormal is diagnosing tumor, the prediction method of prognosis of means；And the tumor therapeutic agent of activation MS4A6A gene or protein.
Background technique
Huppert's disease (multiple myeloma) is the more typical malignant tumour of one kind of hematological system, it be by
In the disease of the extremely Clonal hyperplasia of the thick liquid cell of body, originate from bone-marrow-derived lymphocyte, have in the marrow of patient thick liquid cell (or
For myeloma cell) abnormality clonal expansion.Since abnormal plasmocyte infiltrates bone, marrow and the multiple organ groups of whole body
It knits, causes pathologic bone destruction, occur abnormal monoclonal immunoglobulin in the serum of patient, to inhibit body
Normal polyclonal immunoglobulin, there is M albumen in the urine of patient, patient finally shows to lead to anaemia, kidney function energy loss
Harmful and pathologic fracture etc..In China, the annual morbidity of MM is 1/,100,000, and is 4/,100,000 in western countries' annual morbidity,
Mean survival time (MST) is 3 years, accounts for 20% or so of the hematopoietic system cancer death rate.INVENTIONModern cell science of heredity and molecular biology are ground
Exception has occurred in the intracorporal signal transduction pathway for studying carefully discovery multiple myeloma patients, when the gene of body cell occur
The abnormal secretion of change and cell factor, while Bone Marrow of Patients microenvironment changes and the interaction between cell
Exception has occurred, has been involved in the generation and its development of the disease, but we to the definite pathogenesis of Huppert's disease not yet
It is fully apparent from.In recent years, although having the clinical application of Thalidomide and protease inhibitors and the bone-marrow transplantation of allogene
Technology, but the treatment of MM is not significantly improved, and the prognosis of patient does not also improve significantly.Wolffe thinks from something lost
It passes and is found in the research for learning and expressing science of heredity (epigenetics), due to some oncogenes, including proto-oncogene, suppression cancer base
The molecule of cause is changed, it plays an important role to tumour.He thinks: the definition for expressing science of heredity is exactly:
Due to the change of non-genomic sequence, the variation of gene expression dose is resulted in.This variation does not influence the variation of DNA sequence dna, but
The exception for finally but resulting in gene finds that some and tumour increases with the development of science of heredity, molecular biology and genetics
Grow the pathogenesis that gene relevant to apoptosis understands us Huppert's disease, molecule feature and diagnosing and treating hair
Great effect is waved.
Summary of the invention
It is more to diagnose by detection MS4A6A gene or protein expression difference that one of the objects of the present invention is to provide one kind
The method of hair property myeloma.
The second object of the present invention is to provide a kind of more to predict by detection MS4A6A gene or protein expression difference
The method of hair property myeloma prognosis.
The third object of the present invention is to provide a kind of multiple to treat by activation MS4A6A gene or MS4A6A albumen
The method of property myeloma.
The fourth object of the present invention is to provide a kind of method for screening the drug for the treatment of Huppert's disease.
The fifth object of the present invention is to provide a kind of for treating the drug of Huppert's disease.
To achieve the goals above, present invention employs following technical solutions:
The present invention provides the products of detection MS4A6A gene or MS4A6A albumen to prepare Diagnosis of Multiple Myeloma work
Purposes in tool.
The present invention also provides the products of detection MS4A6A gene or MS4A6A albumen to predict Huppert's disease in preparation
Purposes in prognostic tool.
Further, the product of the detection MS4A6A gene or MS4A6A albumen includes detection MS4A6A gene or MS4A6A
The product of the expression of albumen.The product includes that can combine the nucleic acid of MS4A6A gene or can combine MS4A6A egg
White substance (such as antibody).The nucleic acid is able to detect the expression of MS4A6A gene；The substance is able to detect
The expression of MS4A6A albumen.
The product of detection MS4A6A gene of the invention can play its function based on the known method of nucleic acid molecules is used:
As PCR, such as Southern hybridization, Northern hybridization, dot blot, fluorescence in situ hybridization (FISH), DNA microarray, ASO method,
High-flux sequence platform etc..It can qualitatively, quantitatively or semi-quantitatively implement analysis using the product.
Include that nucleic acid in the said goods can be obtained by chemical synthesis, or by containing from biomaterial preparation
It is expected that the gene of nucleic acid, then using primer amplification designed for amplification expectation nucleic acid, it is obtained.
Further, the PCR method is known method, for example, ARMS (Amplification Refractory
Abruptly-changing system is not answered in Mutation System, amplification) method, RT-PCR (reverse transcriptase-PCR) method, nesting PCR method etc..Amplification
Nucleic acid can be by using dot blotting hybridization method, Surface Plasmon Resonance (SPR method), PCR-RFLP method, original position RT-PCR
Method, PCR-SSO (sequence specific oligonucleotide) method, PCR-SSP method, AMPFLP (amplifiable fragment length polymorphism) method,
MVR-PCR method and PCR-SSCP (single-strand conformation polymorphism) method detect.
Nucleic acid recited above includes the primer for expanding MS4A6A gene, and the primer for including in product can be by passing through
Synthesis is learned to prepare, by using those skilled in the art will know that method be suitably designed with reference to Given information, and pass through
It is prepared by chemical synthesis.
In specific embodiments of the present invention, the nucleic acid is amplimer used in QPCR experiment, the primer
Sequence such as SEQ ID NO.1 (positive sequence) and SEQ ID NO.2 (reverse sequence) shown in.
Nucleic acid recited above may also include probe, and the probe can be prepared by chemical synthesis, by using this
The method that field technical staff knows appropriately is designed with reference to Given information, and is prepared by chemical synthesis, or can lead to
The gene for containing desired nucleic acid sequence from biomaterial preparation is crossed, and is expanded using the primer designed for amplification expectation nucleic acid sequence
Increase it to prepare.
The product of detection MS4A6A albumen of the invention can play its function: example based on the known method of antibody is used
It such as, may include ELISA, radioimmunoassay, immunohistochemical method, western blot etc..
The product of detection MS4A6A albumen of the invention includes the antibody or its segment for specifically binding MS4A6A albumen.It can
To use the antibody or its segment of any structure and size, immunoglobulin class, origin etc., as long as it is in conjunction with target protein
It can.The antibody or its segment for including in testing product of the invention can be monoclonal or polyclonal.Antibody fragment refers to guarantor
Stay peptide of the antibody to the active antibody of the combination of antigen a part of (Partial Fragment) or containing antibody a part.Antibody fragment can be with
Including F (ab ')2, Fab ', Fab, scFv (scFv), disulphide bonding Fv (dsFv) or its polymer, the area dimerization V
(double antibody) or peptide containing CDR.The product of detection MS4A6A albumen of the invention may include encoding antibody or encoding antibody
The isolated nucleic acid of the amino acid sequence of segment, the carrier comprising the nucleic acid, and carry the cell of the carrier.
Antibody can be obtained by the way that well known to a person skilled in the art methods.For example, preparation retains target all or in part
The mammalian cell expression vector of their polynucleotides of the polypeptide or integration coding of protein is as antigen.Exempted from using antigen
After epidemic disease animal, from the immune animal adaptive immune cell of process and myeloma cell is merged to obtain hybridoma.Then from hybridization
Tumor culture collects antibody.It finally can be real by using antibody of the MS4A6A albumen for being used as antigen or part thereof to acquisition
Antigentic specificity purifying is applied to obtain the monoclonal antibody for MS4A6A albumen.Polyclonal antibody can be prepared as follows: with
Identical antigen-immunized animal above collects blood sample from by immune animal, serum is isolated from blood, is then made
Implement antigentic specificity to serum with above-mentioned antigen to purify.It can be by the antibody that is obtained with enzymatic treatment or by using acquisition
The sequence information of antibody obtains antibody fragment.
The combination of marker and antibody or its segment can be implemented by method as commonly known in the art.For example, can
With following fluorescent marker protein or peptide: clean protein or peptide with phosphate buffer, addition DMSO, buffer, etc. standards
Standby dyestuff, then mixed solution, then at being placed at room temperature for 10 minutes.In addition, the labelling kit of commercialization can be used in label, it is all
Such as biotin labeling reagent box, such as biotin labeling reagent box-NH2, biotin labeling reagent box-SH
(DojindoLaboratories)；Alkali phosphatase enzyme mark kit such as alkali phosphatase enzyme mark kit-NH2, alkaline phosphorus
Sour enzyme labelling kit-SH (Dojindo Laboratories)；Peroxidase labelling kit such as peroxidase mark
Remember kit-NH2, peroxidase labelling kit-NH2 (Dojindo Laboratories)；Phycobniliprotein labelled reagent
Box such as phycobniliprotein labelling kit-NH2, phycobniliprotein labelling kit-SH, B- phycoerythrin labelling kit-NH2,
B- phycoerythrin labelling kit-SH, R-PE labelling kit-NH2, R-PE labelling kit SH
(DojindoLaboratories)；Fluorescent labeling reagent box such as fluorescein labelling kit-NH2, HiLyte Fluor (TM)
555 labelling kit-NH2,647 labelling kit-NH2 of HiLyte Fluor (TM) (Dojindo Laboratories)；And
DyLight 547 and DyLight647 (Techno Chemical Corp.), Zenon (TM), Alexa Fluor (TM) antibody
Labelling kit, Qdot (TM) antibody labeling kit (Invitrogen Corporation) and EZ- marker protein mark
Remember kit (Funakoshi Corporation).For correct labeling, suitable instrument can be used to detect by label
Antibody or its segment.
As the sample according to testing product of the invention, the tissue sample for example obtained from biopsy subject can be used
Or fluid.Sample is not particularly limited, as long as it is suitable for measurement of the invention；For example, it may include tissue, blood, blood plasma,
Serum, lymph, urine, serous cavity liquid, spinal fluid, synovia, aqueous humor, tear, saliva or its fraction or treated material
Material.
In specific embodiments of the present invention, tissue of the sample from subject.
In the present invention, " prognosis " refers to mistake of the tumor patient after inhibiting by surgical procedure etc. or alleviating tumour growth
Journey or result.In the present specification, prognosis can be by surgical procedure inhibit or alleviate tumour growth after 1,2,3,4,5,6,
7,8,9,10,15,20 years or more long when life state.Prognosis can be by checking biomarker, that is, MS4A6A albumen or volume
The gene of code MS4A6A albumen is predicted.Prognosis prediction can be performed such that according to biomarker with or without or increasing
Or reduce, determine that the prognosis of patient is good or bad, or determine the probability of good prognosis or poor prognosis.
In the present invention, " prognosis bona " refer to inhibit or alleviate for patient by surgical procedure etc. tumour growth it
Afterwards, patient's long-term (such as 3,5,6,7,8,9,10,15,20 years or longer) does not have critical condition.Alternatively, good prognosis can anticipate
Refer to and survives in such long-time, sent out again without transfer, without recurrence or nothing.For example, prognosis bona can mean at least 3 years or outstanding
It is to survive at least 5 years, preferably without transfer or recurrence.The most preferred state of prognosis bona is survival for a long time without disease.Such as
Used herein, " prognosis bona " can also include any such state, wherein it can be found that disease such as shifts, still
It is pernicious low and do not severely impact survival ability.
In the present invention, " prognosis mala " refers to that patient is short after inhibiting or alleviating tumour growth by surgical procedure etc.
Fatal condition occurs in period (such as 1,2,3,4,5 year or shorter).Alternatively, poor prognosis refers in such short-term extremely
It dies, shift, recur or sends out again.For example, poor prognosis can mean Preventive or dead at least 3 years or especially at least 5 years
It dies.
Prediction prognosis is referred to the process of prediction status of patient or as a result, is not meant to be predicted with 100% accuracy
The process or result of status of patient.Prediction prognosis refers to whether a possibility that determining certain processes or result increases, and simultaneously unexpectedly
Taste by determining a possibility that certain processes or result occurs or not compared with certain processes or result.Such as this
For invention, in the present invention in the horizontal patient reduced of MS4A6A gene or MS4A6A albumen, with the trouble for not showing this feature
Person compares, and more likely observes particular procedure or result.
Further, it is described detection MS4A6A gene or MS4A6A albumen product can be detection MS4A6A gene or
The reagent of MS4A6A albumen is also possible to include kit, chip, test paper of the reagent etc., is also possible to using the examination
The high-flux sequence platform of agent.
The present invention also provides it is a kind of diagnose Huppert's disease tool, the tool be able to detect MS4A6A gene or
The expression of MS4A6A albumen.The tool includes that can combine the nucleic acid of MS4A6A gene or can combine MS4A6A egg
White substance (such as antibody).The nucleic acid is able to detect the expression of MS4A6A gene；The substance is able to detect
The expression of MS4A6A albumen.
Further, the property of the nucleic acid and the substance is the same as noted earlier.
Further, the tool of the diagnosis Huppert's disease includes but is not limited to chip, kit, test paper or high pass
Measure microarray dataset；High-flux sequence platform is a kind of tool of special diagnosis Huppert's disease, with high-flux sequence skill
The development of art will become very easily work to the building of the gene expression profile of a people.By comparison Disease and just
The gene expression profile of ordinary person group, the exception for being easy to analyze which gene are related to disease.Therefore, know in high-flux sequence
The exception of the MS4A6A gene purposes for also belonging to MS4A6A gene related to Huppert's disease, equally in protection model of the invention
Within enclosing.
The present invention also provides a kind of tool for predicting Huppert's disease prognosis, the prediction Huppert's disease prognosis
Tool includes the nucleic acid that can combine MS4A6A gene or the substance (such as antibody) that can combine MS4A6A albumen.The core
Acid is able to detect the mRNA level in-site of MS4A6A gene；The substance is able to detect the expression of MS4A6A albumen.
Further, the property of the nucleic acid and the substance is the same as noted earlier.
Further, it is described prediction Huppert's disease prognosis tool include but is not limited to chip, kit, test paper or
High-flux sequence platform；High-flux sequence platform is a kind of tool of special diagnosis Huppert's disease, as high pass measures
The development of sequence technology will become very easily work to the building of the gene expression profile of a people.By comparing Disease
With the gene expression profile of normal population, the exception for being easy to analyze which gene is related to disease.Therefore, in high-flux sequence
The exception of the MS4A6A gene purposes for also belonging to MS4A6A gene related to Huppert's disease is known, equally in guarantor of the invention
Within the scope of shield.
The amino acid that anti-MS4A6A antibody used in testing product of the invention, diagnostic tool or its segment are identified
Number is not particularly limited, as long as antibody can combine MS4A6A.
The present invention also provides a kind of diagnosis Huppert's disease or the method for predicting Huppert's disease prognosis, the sides
Method includes the following steps:
(1) sample of subject is obtained；
(2) expression of MS4A6A gene or albumen in Samples subjects is detected；
(3) it associates whether by the expression of the MS4A6A gene or albumen that measure with the illness of subject.
(4) compared with the control, the expression of MS4A6A gene or albumen reduces, then the subject is diagnosed as multiple
Myeloma or the subject are confirmed as prognosis mala.
The present invention also provides a kind for the treatment of method of Huppert's disease, the method includes activation MS4A6A gene or
MS4A6A albumen.
Further, the method includes promoting the expression of MS4A6A gene, or the expression or enhancing of promotion MS4A6A albumen
The activity of MS4A6A albumen.
The present invention also provides a kind of screening techniques of tumour medicine, can be by after adding testing drug to cancer cell
Or the expression of some period measurement MS4A6A gene or MS4A6A albumen after applying testing drug to tumor model animal
Level improves the effect of tumor prognosis to measure tumour medicine.More specifically, when MS4A6A gene or MS4A6A albumen
It is swollen as improving that the drug may be selected when increasing after adding or applying testing drug or when restoring normal level in expression
The therapeutic agent of tumor prognosis.
The present invention also provides a kind of drugs of activator containing MS4A6A gene or MS4A6A albumen.
The present invention also provides application of the above-mentioned activator in the drug of preparation treatment Huppert's disease.
The activator of MS4A6A gene or MS4A6A albumen of the invention is unrestricted, as long as can promote or enhance
MS4A6A or be related to the upstream MS4A6A or downstream pathway substance expression or activity, and for treatment the effective drug of tumour be
It can.
Further, the activator includes MS4A6A gene, MS4A6A albumen, promoted type miRNA, promoted type transcriptional control
The factor or promoted type target small molecule compound.
The activator further includes carrier or host cell comprising carrying MS4A6A gene.
On the one hand activator of the invention can be used for supplementing the missing or deficiency of endogenic MS4A6A albumen, by mentioning
The expression of high MS4A6A albumen, thus Huppert's disease caused by treating because of MS4A6A hypoproteinosis.On the other hand it can use
In the activity of enhancing MS4A6A albumen, to treat Huppert's disease.
Drug of the invention can be used as medicine and be administered alone or apply together with other medicines.It can be with medicine of the invention
The other medicines that object is applied together are unrestricted, as long as it does not damage therapeutic or preventive medicine effect of the invention i.e.
It can, it is preferred that the drug for treating or preventing tumour may include such as alkylating agent, such as ifosfamide, ring phosphinylidyne
Amine, Dacarbazine, Temozolomide, Nimustine, busulfan, procarbazine, melphalan and Ranimustine；Antimetabolite, such as
Enocitabine, capecitabine, Carmofur, Cladribine, gemcitabine, cytarabine, cytarabine octadecyl phosphate
(cytarabine ocfosfate), Tegafur, tegafur-Uracil, Tegafur gimeracil oteracil potassium, deoxidation fluorine urine
Glycosides, hydroxycarbamide, fluorouracil, fludarabine, pemetrexed, Pentostatin, mercaptopurine and methotrexate (MTX)；Plant alkaloid, it is all
As Irinotecan, Etoposide, Sobuzoxane, docetaxel, nogitecan, Palmer altruism, vinorelbine, eldisine and
Vincaleukoblastinum；Antitumor antibiotic, such as actinomycin D, Aclarubicin, Amrubicin, idarubicin, epirubicin, Zinostatin
Stimalamer, daunorubicin, Doxorubicin, pirarubicin, bleomycin, Peplomycin, mitomycin C and mitoxantrone；
Drug based on platinum, such as oxaliplatin, carboplatin, cis-platinum and Nedaplatin；Hormonal medicaments, such as Anastrozole, Exemestane,
Estramustine, ethinyloestradiol, chlormadinone, Goserelin, tamoxifen, dexamethasone, Toremifene, Bicalutamide, Flutamide,
Prednisolone, Fosfestrol, mitotane, methyltestosterone, Medroxyprogesterone, Mepitiostane, Leuprorelin and Letrozole；Biological respinse modification
Agent, such as interferon-' alpha ', interferon beta, interferon gamma, interleukin, ubenimex, dry BCG and lentinan；With molecular targeted medicine
Object, such as Imatinib (imatinib), Gefitinib (gefitinib), gemtuzumab, ozogamicin, Tamibarotene, song
Appropriate monoclonal antibody, Tretinoin, bortezomib (bortezomib) and Rituximab etc..
Drug of the invention can be prepared into various dosage forms as needed.Including but not limited to, percutaneous, mucous membrane, nose, buccal,
Tablet, solution, granule, patch, paste, capsule, aerosol or suppository sublingual or orally use.
The administration method of drug of the invention is unrestricted, as long as it can play desired therapeutic effect or preventive effect i.e.
Can, including but not limited to intravenously, in peritonaeum, intraocularly, intra-arterial, intrapulmonary is taken orally, in vesicle, intramuscular, intratracheally, subcutaneously
, local by pleura by skin, sucking, by mucous membrane, skin, stomach is intra-articular, intra-ventricle, rectum, vagina,
In skull, in urethra, in liver, in tumor.In some cases, it can systematically be administered.It is locally to be administered in some cases.
The dosage of drug of the invention is unrestricted, can as long as obtaining desired therapeutic effect or preventive effect
To carry out appropriate determination according to symptom, gender, age etc..Example can be used in the dosage of therapeutic agent or prophylactic agent of the invention
Such as the therapeutic effect of disease or preventive effect are determined as index.
In the context of the present invention, " diagnosis Huppert's disease " is both multiple including judging whether subject has suffered from
Property myeloma, also include judge subject with the presence or absence of suffer from Huppert's disease risk.
" treatment " used herein is covered treatment-related in such as mankind of the mammal with related disease or illness
Disease or morbid state, and include:
(1) prevent disease or morbid state occurs in mammals, especially when the mammal is susceptible in the disease
Diseased state, but when being not yet diagnosed with this morbid state；
(2) inhibit disease or morbid state, that is, prevent its generation；Or
(3) alleviate disease or morbid state, even if disease or morbid state subside.
Term " treatment " is usually directed to treatment mankind or animal (for example, being applied by animal doctor), wherein can reach certain pre-
The therapeutic effect of phase, for example, inhibiting the development (including reduce development speed, stop development) of illness, improving illness and healing
Illness.It further include the treatment as precautionary measures (such as prevention).To not yet development be illness but have development be the illness endanger
The purposes of the patient of danger, is also included in term " treatment ".
The advantages of the present invention:
It is of the invention to have found a kind of molecular marker for diagnosing Huppert's disease, it can be using the molecular marker
Huppert's disease occur early stage can be used as judging, provide the survival rate of patient.
In addition, the present invention is capable of providing significant information to determine treatment side for patient by the prognosis of prediction patient
Case strategy.
The therapeutic agent of activator including MS4A6A gene or albumen of the invention can be used as new Huppert's disease
Therapeutic agent.
Detailed description of the invention
Fig. 1 shows the influence that MS4A6A gene overexpression is proliferated multiple myeloma cells；
Fig. 2 shows the influence that MS4A6A gene overexpression invades multiple myeloma cells；
Fig. 3 shows the influence that MS4A6A gene overexpression migrates multiple myeloma cells.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.Following embodiment is merely to illustrate this
It invents rather than limits the scope of the invention.Test method without specific conditions in embodiment, usually according to conventional strip
Part, such as Sambrook et al., molecular cloning: laboratory manual (New York:Cold Spring HarborLaboratory
Press, 1989) condition described in, or according to the normal condition proposed by manufacturer.
1 genetic chip of embodiment screens difference expression gene
1, it draws materials:
Huppert's disease tissue: collecting MM Bone Marrow of Patients biopsy specimen totally 10 made a definite diagnosis, MM diagnostic criteria refering to " in
2011 revised edition of state's Huppert's disease diagnosis and treatment guide ".Male 5, female 5, the median age 59 years old in patient.
Normal bone marrow tissue: same time malnutritional anemia Bone Marrow of Patients biopsy specimen 10 are collected as control
Group, wherein male 5, female 5, the median age 53 years old.
2, the acquisition of RNA is organized
Total tissue RNA is extracted using Trizol one-step method.
3, the measurement of RNA purity and concentration
1 μ l of RNA solution, Instrument measuring OD260, OD280 are taken, RNA concentration is OD260 value × extension rate × 40/
1000, OD260/OD280 is calculated, ratio represents RNA solution purity is high in 1.7-2.0, -20 DEG C guarantors few containing impurity such as protein
It deposits.
4, RNA integrity detection
(1) 2 μ l RNA sample row, 1.5% agarose gel electrophoresis (80v, 15min) is taken；
(2) after separating zone, genefinder is dyed, and Zone electophoresis band is observed under blue light；
(3) as 28s/18s about 2:1, illustrate that RNA stablizes without degradation.
5, gene chip hybridization and scanning
After the linearized amplification of total serum IgE, cy3-UTP is marked, and the cRNAs after fluorescent marker uses RNEASY Mini Kit
Purifying, carries out fragmentation processing to the cRNAs marked with the RNA Fragmentation Reagents of Amhion.Using beauty
People's full genome chip of expression spectrum (4x 44K gene) of Agilent company, state, 65 DEG C of hybridization 17h in chip hybridization furnace, then
Elution, dyeing, finally use Agilent DNA MicroarrayScanner scanner scanning.
6, chip data processing and analysis
Chip after hybridization imports data to analysis software, for two groups of ratios after chip scanner reads data point
Natural logrithm absolute value be greater than 2.0 or the gene less than 0.5 as difference expression gene.
7, statistical procedures
Data analysis is carried out using 13.0 statistical software of SPSS, group difference compares using one-way analysis of variance method, P <
0.05 difference has significant.
8, result
Chip results are shown, filter out 489 differential expressions between Huppert's disease tissue and normal bone marrow tissue altogether
Gene, wherein expression up-regulation gene 215, expression lower gene 274.
2 large sample of embodiment verifies the difference expression gene filtered out
Consideration yet there are no the gene conduct studied about the gene with Huppert's disease correlation in the prior art
Candidate gene, at the same consider gene sequencing as a result, selection MS4A6A gene (its express in Huppert's disease tissue under
Adjust) it is verified.
1, sample collection
50, Huppert's disease tissue, 60, normal bone marrow tissue are collected according to the method for embodiment 1.
2, it is verified in mRNA level in-site
2.1 extract tissue RNA
Step is the same as embodiment 1.
2.2 reverse transcription
Reverse transcription system totally 20 μ L, including 2 μ g/2 μ L, 50U/ μ L Rnasin of cell total rna, 1 μ L, 5 × reverse transcription are anti-
Answer 4 μ L, 10m M d NTP of buffer, 2 μ l, 50 μ g/mL random primer, 2 μ L (promega), 200U/ μ LM-MLV reverse transcription
18 μ L of μ L, DEPC of enzyme.
37 DEG C are reacted 60 minutes, 95 DEG C of reactions of termination in 5 minutes.CDNA saves or carries out PCR amplification at -80 DEG C.
2.3PCR
Reaction system (is purchased from Tiangeng biochemical technology (Beijing) according to Real Master Mix (SYBR Green) kit
Co., Ltd) configuration, SYBR reaction system 10 μ L, 20 × SYBR solution of totally 25 μ L, 2.5 × Real Master Mix
1.25 μ L, 0.5 μ L of upstream primer, 0.5 μ L of downstream primer, 10.75 2 μ L of μ L, cDNA of deionized water.Reaction condition is 94 DEG C
5min, 94 DEG C of 45s, 60 DEG C of 1min, 30 circulations, if blank control.
The fluorescence signal of preceding 10 circulations of PCR reaction adjusts baseline to suitable place, each fluorescence is bent as autofluorescent background signal
The recurring number in line and baseline crosspoint is Ct value.According to Δ C (t)=C (t)Target gene-C(t)β-actin, Δ Δ C (t)=2-ΔC(t), calculate target gene and β-actin relative expression quantity.
PCR primer sequence is as follows:
MS4A6A gene primer sequence is as follows:
Upstream primer: 5 '-ACTGTTGAACTCTGCTTACC-3 ' (SEQ ID NO.1)；
Downstream primer: 5 '-TTCTCTGTGGCGATTGATAG-3 ' (SEQ ID NO.2).
β-actin gene primer sequence is as follows:
Upstream primer: 5 '-CTGGCACCACACCTTCTACAAT-3 ' (SEQ ID NO.3)；
Downstream primer: 5 '-AATGTCACGCACGATTTCCCGC-3 ' (SEQ ID NO.4)
2.4 result
The results show that the mRNA level in-site of MS4A6A gene is bright in Huppert's disease tissue compared with normal bone marrow tissue
Aobvious to lower, relative expression quantity is 0.24 ± 0.05, and difference has statistical significance (P < 0.05).
3, it is verified on protein level
3.1 extract tissue total protein
The operation of protein extraction is carried out according to the specification of EpiQuik tissue/cell total protein extraction kit.
3.2Western blot detection
The protein quantification of extraction is subjected to SDS-PAGE electrophoresis, carry out later transferring film, closing, primary antibody is incubated for, secondary antibody is incubated for,
Colour developing.
3.3 statistical procedures
The gray value of protein band is analyzed using Image J software, using β-actin as internal reference, by MS4A6A egg
The gray value of informal voucher band is normalized.Result data is indicated in a manner of mean+SD, is used
SPSS13.0 statistical software is next for statistical analysis, and difference between the two is examined using t, it is believed that has system as P < 0.05
Meter learns meaning.
3.4 result
The results show that MS4A6A protein level significantly reduces in Huppert's disease tissue compared with normal bone marrow tissue,
Relative expression quantity is 0.39 ± 0.08, and difference has statistical significance (P < 0.05).
3 MS4A6A gene overexpression of embodiment
1, plasmid construction
According to the coded sequence of MS4A6A gene design amplimer, primer be designed as those skilled in the art institute it is ripe
Know.From cDNA library (clontech company, the article No.: the 638831) coding of the MS4A6A gene of amplification overall length at Human fetal spleen
Sequence, above-mentioned cDNA sequence are inserted into eukaryotic expression vector pcDNA3.1, connect the recombinant vector pcDNA3.1- of acquisition
MS4A6A is used for subsequent experimental.
2, the culture and transfection of multiple myeloma cells
2.1 cell culture
RPMI8226 cell, which uses, contains 15% fetal calf serum (FBS), penicillin 100U/ml, 100 μ g/ml of streptomysin
1640 culture medium of RPMI be placed in 37 DEG C, 5%CO2, cultivate under saturated humidity environment.
2.2 cell transfecting
(1) day before transfection is by 0.5-2*105A tumour cell is suspended in the not antibiotic culture medium of 500 μ l, inoculation
To 24 well culture plates.
(2) transfection same day cell density should reach 80%-90%, prepare following compound A: 1 μ g Plasmid DNA is diluted in nothing
In blood serum medium, mix gently；Compound B: taking 4 μ l Lipofectamine2000 to be diluted in serum free medium, mixes
It is even.
(3) compound A and B are mixed, is mixed gently, is incubated at room temperature.
(4) 100 μ l liposome compounds are added in tumour cell, mix gently up and down, cell is put into 37 DEG C
Containing 5%CO2Incubator is incubated for 5-7 hours.
(5) it is small to continue culture cell 18-24 for the growth medium for adding 1ml to contain 2 times of normal serums and antibiotic concentration
When.
3, the overexpression situation of detection pcDNA3.1-MS4A6A is tested using QPCR
3.1 extraction cell total rnas are operated using conventional method.
3.2 reverse transcription
Step is the same as embodiment 2.
3.3QPCR
Step is the same as embodiment 2.
3.4 result
The results show that pcDNA3.1-MS4A6A can be successfully overexpressed, relative expression quantity is 6.25 ± 0.78, difference tool
Statistically significant (P < 0.05).
3, Western blot experiment detection pcDNA3.1-MS4A6A is overexpressed situation
Step is the same as embodiment 2.
The results show that transfecting MS4A6A albumen in the cell of pcDNA3.1-MS4A6A compared with transfecting pcDNA3.1 group
Content obviously increases, and relative expression quantity is 2.97 ± 0.43, and difference has statistical significance (P < 0.05).
Measurement of the expression of 4 MS4A6A gene of embodiment to multiple myeloma cells proliferative capacity
1, step:
(1) by cell inoculation in 96 orifice plates, each concentration does 3 multiple holes；
(2) solution of MTT working concentration is added, with 37 DEG C of cell common incubation 4h；
(3) culture medium is removed, 200 μ l dimethyl sulfoxides are added to dissolve first a ceremonial jade-ladle, used in libation crystal；
(4) continuous 5d surveys OD570, and all experiments are repeated three times above, averaged；
2, result:
As a result as shown in Figure 1, compared with transfecting pcDNA3.1 group, pcDNA3.1-MS4A6A group cell proliferation rate is transfected
Obviously slow down, difference has statistical significance (P < 0.05).It is above-mentioned the experimental results showed that, MS4A6A gene expression inhibition is multiple
The proliferation of property myeloma cell.
Embodiment 7 detects influence of the MS4A6A gene expression to cell migration, invasion
1, Matrigel
1.1 experimental procedures:
(1) upper chamber is precoated with Matrigel (artificial basement membrane)；
(2) cell after planting transfection in upper chamber, inoculum density 5*104/ 100 μ l cells, in serum free medium
Middle culture 18h；
(3) cell is added in the RPMI-1640 culture medium of 0.1% FBS and cultivates 18h；
(4) 50 μ l Matrigel are drawn on ice；
(5) it is added in 150 μ l serum-free RPMI-1640 culture mediums of pre-cooling and mixes well；
(6) the 50 μ l of Matrigel mixed in (5) is taken respectively, is added to transwell upper chamber, is covered entire film；
(7) 37 DEG C, to overnight, make Matrigel polymerize plastic；
(8) cell is washed 2 times with serum-free RPMI-1640 culture medium, is added in the RPMI-1640 culture medium of serum-free,
To 100 μ l of total volume；
(9) (8) are uniformly added into Transwell upper chamber, between lower layer's culture solution and cell, avoid bubble；
(10) RPMI-1640 culture of the 500-600 μ l of room addition downwards containing 5%FBS, 37 DEG C, 5%CO2；
(11) liquid is exhausted after 48h, wipes the cell not penetrated, move to 100% methanol of cell of the lower surface of film
Fixed 30min, PBS are washed 2 times；
(12) 0.2% violet staining upper chamber 30min, PBS wash away uncalled crystal purple；
(13) it is counted under inverted microscope.
1.2 results:
Experimental result such as Fig. 2 is shown, compared with transfecting pcDNA3.1 group, transfects pcDNA3.1-MS4A6A group cell invasion
Number significantly reduces, and difference has statistical significance (P < 0.05).
2, migration experiment
2.1 experimental procedure
(1) precoating Matrigel artificial basement membrane is not needed in upper chamber.Cell after planting transfection in upper chamber is inoculated with dense
Degree is (1*105The μ l cell of)/100, cultivates 18h in serum free medium；
(2) cell is added in the serum-free RPMI-1640 culture medium of 0.1% FBS and cultivates 18h；
(3) 50 μ l Matrigel are drawn with the pipette tips of pre-cooling on ice；
(4) it is added in 150 μ l serum-free RPMI-1640 culture mediums of pre-cooling and mixes well；
(5) it takes the 50 μ l of Matrigel mixed in (4) to be added to Transwell upper chamber respectively, covers entire film；
(6) 37 DEG C, to overnight, make Matrigel polymerize plastic；
(7) cell is washed 2 times with serum-free RPMI-1640 culture medium, is added in the RPMI-1640 culture medium of serum-free,
To 100 μ l of total volume；
(8) (7) are uniformly added into Transwell upper chamber, between lower layer's culture solution and cell, avoid bubble, downward room adds
Enter RPMI-1640 of the 500-600 μ l containing 10%FBS to cultivate, 37 DEG C, 5%CO2；
(9) liquid is exhausted after 48h, wipes the cell not penetrated, the cell for moving to the lower surface of film is solid with 100% methanol
Determine 30min, PBS is washed 2 times；
(10) 0.2% violet staining upper chamber 30min, PBS wash away uncalled crystal purple；
(11) it is counted under inverted microscope.
2.2 result
Experimental result such as Fig. 3 is shown, compared with transfecting pcDNA3.1 group, transfects the cell migration of pcDNA3.1-MS4A6A group
Number significantly reduces, and difference has statistical significance (P < 0.05).
The above results show the migration and invasion of MS4A6A gene expression inhibition myeloma cell.
The explanation of above-described embodiment is only intended to understand method and its core concept of the invention.It should be pointed out that for this
For the those of ordinary skill in field, without departing from the principle of the present invention, several improvement can also be carried out to the present invention
And modification, these improvement and modification will also be fallen into the protection scope of the claims in the present invention.
Claims (9)
1. the product for detecting MS4A6A gene or MS4A6A albumen is preparing the application in the tool for diagnosing Huppert's disease.
2. application according to claim 1, which is characterized in that the product of the detection MS4A6A gene or MS4A6A albumen
The product of expression including detection MS4A6A gene or MS4A6A albumen.
3. application according to claim 1 or 2, which is characterized in that the product includes that can combine MS4A6A gene
Nucleic acid can be in conjunction with the substance of MS4A6A albumen；The nucleic acid is able to detect the expression of MS4A6A gene；The object
Matter is able to detect the expression of MS4A6A albumen.
4. application according to claim 3, which is characterized in that the nucleic acid is specifically expanded used in real-time quantitative PCR
Increase the primer of MS4A6A gene as shown in SEQ ID NO.1 and SEQ ID NO.2.
5. application according to claim 1, which is characterized in that the tool include be able to detect MS4A6A gene or
The tool of the expression of MS4A6A albumen.
6. application according to claim 5, which is characterized in that the tool includes can be in conjunction with the nucleic acid of MS4A6A gene
Or it can be in conjunction with the substance of MS4A6A albumen；The nucleic acid is able to detect the expression of MS4A6A gene；The substance energy
Enough detect the expression of MS4A6A albumen.
7. application according to claim 6, which is characterized in that the nucleic acid is specifically expanded used in real-time quantitative PCR
Increase the primer of MS4A6A gene as shown in SEQ ID NO.1 and SEQ ID NO.2.
Application of the activator of 8.MS4A6A gene or MS4A6A albumen in the drug of preparation treatment Huppert's disease.
9. application according to claim 8, which is characterized in that the activator can promote or enhance MS4A6A or be related to
The expression or activity of the substance of the upstream MS4A6A or downstream pathway.
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| JP2021513328A (en) * | 2018-01-31 | 2021-05-27 | アレクター リミテッド ライアビリティ カンパニー | Anti-MS4A6A antibody and how to use it |
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| CN103074422A (en) * | 2012-12-29 | 2013-05-01 | 深圳市第三人民医院 | MS4A6A gene application |
| CN105759057A (en) * | 2016-04-12 | 2016-07-13 | 上海凯璟生物科技有限公司 | Dry-type immunofluorescence kit for detecting Alzheimer syndrome MS4A6A and preparation method thereof |
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| CN105759057A (en) * | 2016-04-12 | 2016-07-13 | 上海凯璟生物科技有限公司 | Dry-type immunofluorescence kit for detecting Alzheimer syndrome MS4A6A and preparation method thereof |
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