CN1481899A - Novel vaccine of tumor antigen, its preparation method and vaccine composition - Google Patents

Novel vaccine of tumor antigen, its preparation method and vaccine composition Download PDF

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CN1481899A
CN1481899A CNA021369658A CN02136965A CN1481899A CN 1481899 A CN1481899 A CN 1481899A CN A021369658 A CNA021369658 A CN A021369658A CN 02136965 A CN02136965 A CN 02136965A CN 1481899 A CN1481899 A CN 1481899A
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李进
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Abstract

The new tumor antigen vaccine includes sequence with seven or more amino acids from tumor antigen and CH3 part amino acid sequence of immune globulin, and the two sequences are connected mutually. The NDA sequence encoding the tumor antigen vaccine, its preparation process and the vaccine composition containing the tumor antigen vaccine are also disclosed. The vaccine of the present invention has molecular weight many times smaller than that of antigen-antibody composition, and is easy to be phagocytized by dendritic cell to produce powerful immunological effect.

Description

New tumor antigen vaccine and preparation method thereof and vaccine combination
Technical field
The present invention relates to biological engineering and medical domain.More particularly, the present invention relates to a kind of new tumor antigen vaccine and preparation method thereof and vaccine combination.
Background of invention
Tumor is still one of human major causes of death so far.Although constantly be improved and improve in the diagnosis of tumor and the level aspect the treatment in recent years, the scheme of chemotherapy and radiation is also constantly being improved, and final most patients still is difficult to the misfortune of cheat death.In recent years, molecular biological progress and development and exploitation Biotherapeutics method that the further understanding of function of immune system makes entered the stage of a develop rapidly.The development of tumor vaccine is one of topmost direction of present tumor biotherapy [1-3].
Although immunity system may produce certain anti tumor immune response, studies show that cell toxicant (CD8+) and auxiliary (CD4+) T-cell have played crucial [4,5] in the tumor rejection reaction.Therefore, the target of most of tumor vaccines all is devoted to the specific T-cell effect of inducing cell.The antigenic mode of T-cell antigen receptor (TCR) identification only relates to the polypeptide fragments [6] that is positioned at the target cell surface and is embedded in main tissue compatible complex (MHC) I class and II quasi-molecule.I class MHC molecule is offered endogenous protein and is decomposed the polypeptide that is produced.Tumor cell is in the process of synthetic tumor antigen, and the polypeptide of decomposition is offered to cause tumor cell surface by MHC I quasi-molecule and activated the CD8+T-cell.The II quasi-molecule is discerned by the CD4+T-cell, mainly is positioned at special antigen presenting cell (APCs) surface, comprises dendritic cell, B-cell and macrophage.Tumor cell secretion or tumor dissolving discharge extrinsic protein and are captured by APCs.In APC, antigen is processed to polypeptide fragments and offers the cell to CD4+ by II class MHC.The immunoreation of the cell of CD4+T-cell and body fluid is closely related, stimulates production of antibodies and stimulates amplification CD8+T-cell effect by excretory cytokine by the direct interaction with the B-cell.Activated antigenic specificity CD8+ cell finally becomes cytotoxic T cell and dissolves tumor cell [7].APCs also can processing polypeptides and is offered the cell to CD8+T-by the MHCI quasi-molecule.
Ideal tumor-special antigen should have immunogenicity, for tumor cell expressed but be not expressed in normal cell.Unfortunately, most of tumor antigens all do not have enough immunogenicities inducing effective immunoreation, and many tumor antigens are expressed in normal tissue to a certain extent, therefore, these antigens are the relevant rather than real TS antigen of tumor.Designed tumor vaccine just must overcome the immunologic tolerance obstacle of body.
Tumor vaccine mainly is divided into whole-cell vaccines, protein molecular vaccine, polypeptide vaccine, recombinant molecule vaccine and dendritic cell vaccine.And dna vaccination and RNA vaccine in fact still belong to molecular vaccine, have just adopted different expression systems.
Cell vaccine: the past, not fully aware of to the dependency aspect that tumor antigen is clinical with it, adopt full cell as tumor vaccine, can provide those unknown tumor antigens to come the activating immune system tumor antigen.In the mouse tumor model, usually use the tumor cell immune mouse of irradiation, the invasion and attack [8] of the tumor of avoiding inoculating with the protection mice.But during a week, vaccine has just lost the ability of protecting mice to the time retardation that uses when tumour-cell vaccine to the inoculated tumour cell after.The clinical treatment reaction of tumour-cell vaccine is poor, only is only applicable to not have the prevention of recurrence of the antigenic tumour patient of specific tumor.Seldom obtaining good result [9] aspect the clinical research for the progressive stage patient.In recent years, because progress, particularly understanding in depth of the antigenic mechanism of T cell recognition aspect the discriminatory analysis tumor antigen, the tumor antigen vaccine replaces the immunization therapy that cell vaccine is used to tumor substantially.
Polypeptide and protein vaccine: the antigen polypeptide epi-position of T-cell recognition MHC molecular surface is generally 7-12 aminoacid, and therefore, antigen polypeptide can mix with immunological adjuvant uses the purpose that is loaded into hollow MHC molecule in vivo to reach.Up to the present, nearly all vaccine based on polypeptide all is the restricted polypeptide of MHC I class antigen.After mice study has confirmed its effectiveness [10,11], polypeptide vaccine begins to have entered clinical research.Marchandetal[12] carried out the I clinical trial, 12 examples are expressed MAGE-3, and III or IV phase melanocytoma patient gave synthetic MAGE-3 polypeptide in continuous three months.Though have three routine patients to have the part tumor to shrink back, do not detect the evidence [13] of cytotoxic T-cell effect.Rosenberg etc. [14] are with the restricted gp100 polypeptide immune of synthetic A2-melanocytoma patient, there are 10 routine patients that polypeptide has been produced reaction among the patient that 11 are accepted the Fu Shi Freund's complete adjuvant, the T-cell of tumor response has appearred in part patient, but does not find obvious clinical effectiveness.The patients that 19 example associating whole bodies are used IL-2, polypeptide-reactive T-cell effect appears in 3 routine patients, and 7 routine patients have tangible clinical effect, comprise that an example shrinks back fully, and the clinical response rate of using IL-2 separately is 17%[8].Polypeptide vaccine is used some restrictions.Applied polypeptide vaccine must be complementary with patient's MHC I class antigen molecule, it is so-called individuation, the hypotype difference of different patient MHC I quasi-molecules, the sequence of employed tumor antigen polypeptide are also different, and this brings very big difficulty for the clinical practice of tumor antigen polypeptide.
The recombinant molecule vaccine: the application of tumor antigen protein vaccine can overcome this difficulty, but the simple immunoreation of using albumen can not activate body.Primate trial studies confirm that best immune effect oncoprotein and immunogenic protein by force need be twisted together mutually [15].Poor antigen will induce effective immunoreation, just must unite the use immunological adjuvant, provide a nonspecific signal with activating immune system, many immunological adjuvants certain toxicity is all arranged and can not be applied to clinical, so the antigen protein vaccine mostly occurs with recombinant forms.
The immunogenic method that strengthens oncoprotein with recombinant forms is exactly with tumor antigen and cytokine, and as GM-CSF, reorganization such as interleukin forms fusion rotein [16,17].The reorganization of tumor poor antigen and antibacterial or virus antigen, toxin such as diphtheria toxin, diphtherotoxin, pseudomonal toxin etc. can obviously improve the antigenicity of tumor antigen, promotes that DC offers engulfing of tumor antigen, has obtained certain effect.But up to the present the method for the independent reorganization of tumor antigen and toxin does not still also reach ideal effect.
Dendritic cell vaccine: for the cell-mediated immunoreation of effective T-, the T-cell needs antigen to be offered and the original T-cell of sensitization, and the T-lymphocyte of sensitization obtains to stimulate again.Start the cell-mediated tumour immunity of effective T-, derive from the T-cell that the tumor antigen polypeptide at any position must be recycled in the body and discern.Tumor cell surface lacks MHC molecule and costimulatory molecules, can't activate the T-cellular immunization.Therefore, antigenic offering is the key step that obtains effective immune response.The immunoreation of boosting vaccine mainly depends on effective APC to antigenic preliminary working with further offer.Dendritic cell (DC) is the most effective APC[19].Now, more and more evidences shows that DCs can make immune system overcome this obstacle.DCs can obtain from the separation CD34+ hematopoietic stem cell or the single karyolymph cell of peripheral blood at present in a large number.DCs exists with crudity in the great majority tissue, can not directly stimulate the T-cell but has special ability of capturing with process antigen.These captive antigens are offered to cause cell surface effectively by I class and II class MHC molecule in the DCs cell.Antigenic capturing as stimulus signal promotion cell maturation and to regional nodes moved.The cell surface of these sophisticated DCs is high expressed costimulatory molecules and adhesion molecule also, has the powerful lymphocytic function of activation T-[20-22].DCs in external a large amount of generations has entered clinical trial [23] with the vaccine that tumor antigen impacts preparation, adopt the oncolysis thing, tumor antigen protein, the clinical research of ballistic dendritic cell vaccines such as tumor antigen polypeptide has obtained more satisfactory effect [24].Adopt self tumor cell and the cell vaccine treatment transitivity renal carcinoma that merges of DCs also to obtain certain effect, have 7 examples that definite clinical response is arranged among the 17 routine patients, comprising 4 examples shrink back fully [25].
Therefore, see that DCs is an optimal vaccine in all schemes for the vaccine on basis with regard to present result of study.But the in-vitro separation of DC and cultivate to need very high specification requirement and expense is sent tumor antigen and is activated DC then can reduce medical expense greatly if can finish effectively in vivo to DC.
Is a feasible scheme by antigen antibody complex to the DC delivery of antigens, because the Fc receptors bind of the Fc section of immunoglobulin and DC cell surface can promote engulf [26,27] of DC to antigen antibody complex.Mode with recombinant DNA vaccine confirms that also the Fc section of immunoglobulin can promote the immunoreation to hepatitis virus B, can improve the generation level of immunologically competent cell interferon, and improving the activity [27] of CD8+ to a certain extent, whether this dna vaccination can obtain satisfied treatment hepatitis in animal experiment effect does not have relevant report so far.Because most of hepatocyte of hepatitis patient is all infected in various degree, if this dna vaccination has good effect, will cause immunocyte to all infected hepatocellular attacks, finally causes hepatic necrosis, therefore, the method is also inadvisable.On the whole, the mode of employing antigen antibody complex activates DC and can obtain immunoprophylactic effect [28,29] effectively.But the mode of antigen antibody complex activates DC its defective is arranged also, the preparation, the particularly preparation of humanized's antibody that at first will carry out antigenic preparation and antibody respectively are still quite difficulty at present.The second, the activation of DC needs the participation (being danger signal) of inflammatory factor simultaneously, and under the situation that lacks inflammatory factor, the activation of DC will be subjected to very big influence.The 3rd, antigen is unstable with combining of antibody, under the influence of certain factor, influences the antigen delivery effect thereby antigen can break away from antibody.
Therefore,, improve the level of sending of tumor antigen, overcome the immunosuppressive condition of body, fundamentally cure tumor, need to develop the tumor antigen vaccine that makes new advances in this area in order to improve the mode of sending of tumor antigen.
Summary of the invention
An object of the present invention is to provide new tumor antigen vaccine.
Another object of the present invention provides the nucleotide sequence of this tumor antigen vaccine of coding.
A further object of the invention provides the vaccine combination that contains this tumor antigen vaccine.
A further object of the invention provides the preparation method of this tumor antigen vaccine.
In order to realize the foregoing invention purpose, first aspect present invention relates to a kind of isolating tumor antigen vaccine, this tumor antigen vaccine comprises to come the amino acid whose sequence more than 7 or 7 of self tumor antigen and contains the aminoacid sequence of the CH3 part of immunoglobulin, and above-mentioned two sequences interconnect.
Second aspect present invention relates to a kind of dna molecular, and this dna molecular contains the nucleotide sequence of the above-mentioned tumor antigen vaccine of encoding.
Third aspect present invention relates to a kind of vaccine combination, and this vaccine combination comprises tumor antigen vaccine and pharmaceutically acceptable carrier.
Fourth aspect present invention relates to a kind of method for preparing above-mentioned tumor antigen vaccine, and this method comprises:
A) provide an expression vector, this expression vector contains the nucleotide sequence of the above-mentioned tumor antigen vaccine of encoding and the expression regulation sequence that links to each other with this nucleotide sequence operability;
B) with the expression vector transformed host cell in the step a);
C) host cell of gained incubation step b under the condition that is fit to the described tumor antigen vaccine of expression); With
D) separation and purification obtains the expressed tumor antigen vaccine that goes out.
Tumor antigen vaccine of the present invention is by expressing acquisition with tumor antigen or its polypeptide and immunoglobulin CH3 part in the dna level reorganization.This tumor antigen vaccine can be by the Fc receptors bind of its CH3 part with the DC surface, thereby promote endogenousization of the tumor antigen that fusion rotein is entrained and stimulate the DC maturation, stimulates DC that this is antigenicly offered and activate the T lymphocyte.Because the polypeptide that endogenousization of antigen of CH3 mediation offered mainly combines with I class MHC molecule, activates the CD8+ cytotoxic T cell, therefore can produce powerful immune attack, and kill this class tumor cell at expressing this antigenic tumor cell.
Compare with antigen antibody complex, the inventive method is easy, has omitted this very complicated step of preparation distinct antibodies, and antigen and CH3 are the albumen of reorganization, in conjunction with firm.And antigen antibody complex easily breaks away from.The little manyfold of molecular weight ratio antigen antibody complex of vaccine of the present invention is easily engulfed by dendritic cell, produces very strong immunoreation.Especially after being connected into toxin in addition, can make the antigenicity of tumor antigen that more obvious raising is arranged, the t cell activation effect can further improve 2 times.
Detailed Description Of The Invention
The invention provides a kind of isolating tumor antigen vaccine, this tumor antigen vaccine comprises to come the amino acid whose sequence more than 7 or 7 of self tumor antigen and contains the aminoacid sequence of the CH3 part of immunoglobulin, and above-mentioned two sequences interconnect.
Term used herein " isolating " represents that this protein is gone up substantially and does not contain other cell component relevant under native state that it preferably is homogeneous state when being used for protein, but also can be do or aqueous solution.Common available analyses chemical method of purity and homogeneity such as polyacrylamide gel electrophoresis or high performance liquid chromatography are measured.
Tumor antigen vaccine of the present invention contains two aminoacid sequences.First aminoacid sequence comes the amino acid whose peptide sequence more than 7 or 7 of self tumor antigen.Term used herein " polypeptide " and " albumen " can exchange, and it comprises the amino acid chain that has any length more than 7 or 7, comprise full-length proteins (being tumor antigen itself), wherein connect by the covalency peptide bond between amino acid residue.Here, the implication of term " tumor antigen " is well-known to those skilled in the art.In a preferable embodiment of the present invention, described tumor antigen should be selected from any can be by the antigen relevant of T cell recognition with tumor.In a better embodiment, described tumor antigen should be selected from: 707-AP, AFP, ART-4, BAGE B, β-catenin/m, bcr-abl, CAMEL, CAP-1, CASP-8, CDC27m, CDK4/m, CEA, CT, Cyp-B, DAM, ELF2M, ETV6-AML1, ETS, G250, GAGE, GnT-V, GP100, HAGE, HER-2/NEU, HLA-A*0201-R170I, HPV-E7, HSP70-2M, HST-2, hTERT, iCE, KIAA0205, LAGE, LDLR/FUT, GDP-Lfucose, MAGE, MART-1/Melan-A, MC1R, Myosin/m, MUC1, MUM-1,-2 ,-3, NA88-A, NY-ESO-1, P15, p190, P53, Pml/RAR α, PRAME, PSA, PSM, RAGE, PAS, RU1, RU2, SAGE, SART-1, SART-3, TEL/AML1, TPI/m, TRP-1, gp75, TRP-2, TRP-2/INT2, WT1.As known to those skilled in the art, tumor antigen only need 7 or 7 above amino acid polypeptide sequences just can for antigen presenting cell institute submission (CAP-1 is that the aminoacid sequence that derives from CEA is YLSGANLNL[30], VISNDVCAQV is the aminoacid sequence [31] that derives from PSA, and KIFGSLAFL is the aminoacid sequence [32] that derives from HER2/neu).In addition, in the above-mentioned tumor antigen peptide sequence one or more aminoacid deletion, displacement or increase can be arranged, so the variant that produces is also included within term of the present invention " tumor antigen " scope, as long as described variant has kept the antigenicity of this tumor antigen peptide sequence.
Second contained aminoacid sequence is the aminoacid sequence that contains immunoglobulin CH3 part in the tumor antigen vaccine of the present invention.The present inventor finds that the CH3 in the immunoglobulin Fc fragment partly is the pass key sequence that causes immunoglobulin Fc fragment and DC cell surface Fc receptors bind.Therefore, any aminoacid sequence of estimating to contain immunoglobulin CH3 part all can with DC cell surface Fc receptors bind.The aminoacid sequence of CH3 and DNA sequence are shown in respectively among sequence table SEQ ID NO:1 and the SEQ ID NO:2.Yet one or more aminoacid deletion, displacement or increase in the CH3 aminoacid sequence and the CH3 variant that produces is also included within term of the present invention " CH3 part " scope are as long as this variant has kept the ability with DC cell surface Fc receptors bind.Described " CH3 variant " should be about more than 80% with the homogeny of CH3 sequence, and better is about more than 95%.Wherein common displacement is conservative amino acid displacement, for example the phase double replacement between aliphatic amino acid Ala, Val, Leu and the Ile; The exchange of hydroxyl residue Ser and Thr; The exchange of acidic residues Asp and Glu; Displacement between amide residues Asn and the Gln; The exchange of alkaline residue Lys and Arg; And the displacement between aromatic moieties Phe and the Tyr.Disappearance or increase comprise CH3 in conjunction with very little aminoacid deletion or the increase of DC cell surface Fc receptor ability influence.Described " aminoacid sequence that contains immunoglobulin CH3 part " can only be the CH3 aminoacid sequence.In another embodiment, it can be the immunoglobulin Fc fragment that contains this CH3 aminoacid sequence.
Above-mentioned two aminoacid sequences only need link to each other and get final product, and unmatched back order.Described connection can directly connect (promptly wherein do not have get involved aminoacid) maybe can be by the antigenic joint sequence connection of tumor antigen peptide sequence that can not appreciable impact.
In a preferable embodiment of the present invention, also comprise toxin in the tumor antigen vaccine of the present invention.Described toxin can be any antibacterial or virus and other biotoxin, for example diphtheria verticillium toxin, bacillus pertussis toxin, pseudomonal toxin, anthrax toxin, tetanus toxin etc.Described toxin can be connected in series with any 30 toxin fragment and tumor antigen vaccines more than the aminoacid, wherein the toxin fragment can be connected before and after above-mentioned tumor antigen polypeptide fragment and the CH3 fragment and between any position.
The present invention also provides a kind of dna molecular, and this dna molecular contains the nucleotide sequence of code book invention tumor antigen vaccine.For example, the nucleotide sequence of the various tumor antigen peptide sequences of encoding is well known by persons skilled in the art, can retrieve to obtain from gene bank.The nucleotide sequence of coding CH3 part for example is presented among the SEQ ID NO:2.Yet those skilled in the art also can utilize the degeneracy of the genetic code of knowing in this area to obtain all other nucleotide sequences of the above-mentioned aminoacid sequence of coding.
Tumor antigen vaccine of the present invention can obtain by the following method.
At first, according to information disclosed by the invention, use conventional means well known to those skilled in the art, obtain the codes for tumor antigenic nucleotide sequence of amino acid whose sequence and the nucleotide sequence of the CH3 part that coding contains immunoglobulin more than 7 or 7 respectively as synthetic or with PCR method amplification.Then, available the whole bag of tricks well known in the art as gene engineering method, connects into above-mentioned sequence in the suitable expression vector with tumor antigen polypeptid coding sequence, CH3 coded sequence with optional joint sequence, and links to each other with the expression regulation sequence operability.In another optional operating procedure, also can utilize gene engineering method that the coded sequence of toxin (as diphtheria toxin, diphtherotoxin) is also connected in this expression vector.Term used herein " expression regulation sequence " is often referred to and participates in the sequence that the control nucleotide sequence is expressed.Expression regulation sequence comprises promoter and the termination signal that links to each other with target nucleotide sequence operability.They also comprise the suitably required sequence of translation of nucleotide sequence usually." operability links to each other " is meant that some part of linear DNA sequence can influence the activity of same other parts of linear DNA sequence.For example, if promoter or enhancer have increased transcribing of coded sequence, then it is that operability links to each other with coded sequence.Used expression vector can adopt various commercially available expression vector well known by persons skilled in the art among the present invention.
Then, the expression vector with above-mentioned acquisition transforms proper host cell.In the present invention, term " host cell " comprises prokaryotic cell and eukaryotic cell.The example of prokaryotic host cell commonly used comprises escherichia coli, bacillus subtilis etc.Eukaryotic host cell commonly used comprises yeast cells, insect cell and mammalian cell.In a preferable embodiment of the present invention, should adopt mammal cell line to be used as host cell, better adopt commercially available immortal cell line, as Chinese hamster ovary (CHO) cell, Vero cell, HeLa cell, young hamster kidney (BHK) cell, monkey-kidney cells (COS) etc.
Term used herein " conversion " is meant that will contain interested expression of nucleic acids carrier with method well known to those skilled in the art directly imports in the host cell.Method for transformation is different because of the host cell type, generally includes: electroporation; Adopt the transfection of calcium chloride, DEAE-glucosan or other material; Microparticle bombardment; The fat transfection; Infect and other method (seeing people's such as Sambrook " molecular cloning experiment guide " the 2nd edition, 1989 years).
At last, under the condition that is fit to tumor antigen vaccine expression of the present invention, cultivate the host cell that transforms gained.Use the cell lysis buffer solution cell lysis then, conventional separation and purification means purification well known to those skilled in the art such as reuse ion-exchange chromatography, hydrophobic chromatography, sieve chromatography and affinity chromatograph obtain tumor antigen vaccine of the present invention.
The present invention also provides a kind of vaccine combination, and it contains the tumor antigen vaccine of the present invention and the pharmaceutically acceptable carrier of effective dose on the drug effect.Term used herein " pharmaceutically acceptable " is meant that they can not produce disadvantageous, hypersensitive or other untoward reaction when molecule body and compositions suitably give the animal or human." pharmaceutically acceptable carrier " used herein should be compatible with tumor antigen vaccine of the present invention, can not reduce the effect of vaccine combination with its blend under normal conditions significantly.Suitable carriers normally big, metabolism macromole slowly, as the virion of protein, polysaccharide, polylactic acid, polyglycolic acid, amino acid polymer, amino acid copolymer, lipid agglutinator (as oil droplet or liposome) and non-activity.These carriers are well known to those of ordinary skill in the art.
Vaccine combination of the present invention can be made various dosage forms as required, and can by the doctor according to patient's kind, age, body weight and roughly factor such as disease condition, administering mode determine the useful dosage of patient is used.Traditional method is to give by injection from parenteral (subcutaneous, intramuscular or transdermal/through skin) approach.Therapeutic dose can be single agent scheme or multi-agent scheme.Vaccine can give together in conjunction with other immunomodulator or immunological adjuvant.
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.The experimental technique of unreceipted actual conditions in the following example, carry out all according to the condition described in " molecular cloning: laboratory manual " (third edition) (Cold Spring HarborLaboratory Press) of people such as normal condition such as Sambrook, or according to the condition that manufacturer advises.
Embodiment 1:MUC1 tumor antigen vaccine
The MUC1 complete sequence can be from gene bank (NM ... 002456) retrieval obtains.With Invitrogene company reverse transcription test kit,, from the synthetic cDNA of X-108 stomach cancer cell line (stomach cancer cell line in specimens from pri source), obtain the DNA of MUC1 by the mRNA reverse transcription method according to the operation of manufacturer's description.
Equally, according to the operation of manufacturer's description, obtain the DNA of CH3 with Invitrogene company reverse transcription test kit from the synthetic cDNA of human B lymphocyte mRNA reverse transcription.The DNA sequence of CH3 is shown in SEQ IDNO:2 in the sequence table.
DNA with the MUC1 of above-mentioned acquisition is the synthetic MUC1 (5 ' PCR primer sequence AACCCGGTACCACAGGTTCTGGTCATGCAAGC (SEQ ID NO:3), 3 ' PCR primer sequence AACCCCTCGAGGGGGGCGGTGGAGCCCGGGGCC (SEQ ID NO:4)) of template PCR method.With restricted enzyme Kpn I/Xho I MUC1 is cloned in the interior multiple clone site of pcDNA3.1 carrier (available from Invitrogene company).Equally, DNA with the CH3 of above-mentioned acquisition is the CH3 fragment (5 ' PCR primer sequence AACCCCTCGAGGGCAGCCCCGAGAACCAC (SEQ IDNO:5), 3 ' PCR primer sequence AACCCTCTAGATCATTTACCCGGGGACAG (SEQ ID NO:6)) of template with PCR method synthetic immunoglobulin Fc.With restricted enzyme Xho I/Xba I the CH3 fragment cloning is gone in the pcDNA3.1 carrier in the corresponding site, make it to be connected in series with MUC1.
After increasing, pcDNA3.1 uses Miniprep test kit plasmid DNA purification in DH-5 α (available from Invitragene company).Get the postdigestive DNA of 5-10ug, with in its Chinese hamster ovary celI of transduceing (available from U.S. ATCC), screen monoclonalization through G418 with Superfectine test kit (Qiagene company).
The cell of amplification cloning is with dissolved cell buffer (20mM Tris pH7.5,150mM NaCl, 10mMDTT, 1mM Phenylmethanesulfonyl fluoride PMSF, 10 mcg/ml press down the enzyme peptide, 10 mcg/ml leupeptins, 5 mcg/ml stomaches press down the enzyme peptide) results dissolving Chinese hamster ovary celI.
Detect Expression of Fusion Protein with the Western blotting, one anti-ly is mouse-anti people MUC1 monoclonal antibody, and two anti-ly are rabbit anti-mouse igg, and test kit is a U.S. vector company product.Results suggest can be measured fusion rotein at about 23000 molecular weight places.
Detection fusion rotein function as described below.With the fusion protein immunization C57/BL6 mice of 2 milligrams of purification, totally three times once in a week, get mouse boosting cell 1 * 10 7With 20: 1 ratios and MC38 cell (the deriving from America NI H) Mixed culture of shining (8000 cobalt sources draw) 5 days, imitate the concentration and the killing activity of wild type MC38 Mixed culture mensuration splenocyte of target ratio again with difference to MC38.Found that, imitated target with 1: 20 and can kill 80% MC38 cell than in four hours.And the mice that crosses in order to last method immunity can obtain 100% immunoprotection, repels up to 1 * 10 6The attack of MC38 tumor cell.Its therapeutic effect is compared high 5-10 doubly with common antigen antibody complex.
Embodiment 2:CEA tumor antigen vaccine (CAP-1)
At first, according to the operation of manufacturer's description, obtain the DNA of Fc section with Invitrogene company reverse transcription test kit from the synthetic cDNA of human B lymphocyte mRNA reverse transcription.The DNA sequence of Fc section is shown in sequence table SEQ IDNO:7.
The dna encoding sequence of CAP-1 is known as TACCTTTCGGGAGCGAACCTCAACCTCTCC (SEQ ID NO:8), Fc section cDNA with above-mentioned acquisition is the DNA (5 ' PCR primer sequence AACCCGGTACCATGTACCTTTCGGGAGCGAACCTCAACCTCTCCGCAGAGCCCAAA TCTTGTGA (SEQ ID NO:9), 3 ' PCR primer sequence AACCCTCTAGATTATCATTTACCCGGAGA (SEQ ID NO:10)) of template with the synthetic CAP-1-Fc recombiant protein of PCR method.With restricted enzyme Xho I/Xba I CAP-1-Fc is cloned in the pcDNA3.1 carrier in the corresponding site, CAP-1 and Fc are connected in series.
After increasing, pcDNA3.1 uses Miniprep test kit plasmid DNA purification in DH-5 α (available from Invitragene company).Get the postdigestive DNA of 5-10ug, go into Chinese hamster ovary celI (available from U.S. ATCC), through G418 screening, monoclonalization with Superfectine test kit (Qiagene company) transduction.
The cell of amplification cloning is with dissolved cell buffer (20mM Tris pH7.5,150mM NaCl, 10mMDTT, 1mM Phenylmethanesulfonyl fluoride PMSF, 10 mcg/ml press down the enzyme peptide, 10 mcg/ml leupeptins, 5 mcg/ml stomaches press down the enzyme peptide) results dissolving Chinese hamster ovary celI.
The Western blotting detects Expression of Fusion Protein, and one anti-ly is mouse-anti people CH3 monoclonal antibody, and two anti-ly are rabbit anti-mouse igg, and test kit is a U.S. vector company product.Results suggest can be measured the fusion rotein monomer at about 30000 molecular weight places.
This fusion rotein of separation and purification, lyophilizing, packing.
Embodiment 3:P53 tumor antigen vaccine
People P53 complete sequence can obtain from gene bank (M14695) retrieval.The plasmid that contains the P53 gene can be buied from U.S. ATCC, and its amino acid whose complete sequence is shown in SEQ ID NO:11.Equally, according to the operation of manufacturer's description, obtain the DNA of CH3 with Invitrogene company reverse transcription test kit from the synthetic cDNA of human B lymphocyte mRNA reverse transcription.
With the DNA of the P53 of above-mentioned acquisition is template with the synthetic P53 (5 ' PCR primer sequence AACCCGGTACCATGGAGGAGCCGCAGTCAGAT (SEQ ID NO:12), 3 ' PCR primer sequence AACCCCTCGAGGTCTGAGTCAGGCCCTTC (SEQ ID NO:13)) of PCR method.With restricted enzyme Kpn I/Xho I P53 is cloned in the interior multiple clone site of pcDNA3.1 carrier (available from Invitrogene company).Equally, DNA with the CH3 of above-mentioned acquisition is the CH3 fragment (5 ' PCR primer sequence AACCCCTCGAGGGCAGCCCCGAGAACCAC (SEQ ID NO:5), 3 ' PCR primer sequence AACCCTCTAGATCATTTACCCGGGGACAG (SEQ ID NO:6)) of template with PCR method synthetic immunoglobulin Fc.With restricted enzyme Xho I/Xba I the CH3 fragment cloning is gone in the pcDNA3.1 carrier in the corresponding site, make it to be connected in series with P53.
Partial dna sequence (can retrieve its full length sequence A04646) (SEQ ID NO:14) (5 ' PCR primer sequence is AACCCGGTACCAACTTTTCTTCGTACCACG (SEQ ID NO:15), and 3 ' PCR primer sequence is AACCCGGTACCACTATAAAACCCTTTCCAA (SEQ ID NO:16)) with the synthetic diphtheria toxin, diphtherotoxin of PCR method from gene bank.Utilize restricted enzyme Kpn I that toxin sequence is connected in series in the front end of P53, putting in order is toxin-P53-CH3.
After increasing, pcDNA3.1 uses Miniprep test kit plasmid DNA purification in DH-5 α (available from Invitragene company).Get the postdigestive DNA of 5-10ug, go into Chinese hamster ovary celI (available from U.S. ATCC), through G418 screening, monoclonalization with Superfectine test kit (Qiagene company) transduction.
The cell of amplification cloning is with dissolved cell buffer (20mM Tris pH7.5,150mM NaCl, 10mMDTT, 1mM Phenylmethanesulfonyl fluoride PMSF, 10 mcg/ml press down the enzyme peptide, 10 mcg/ml leupeptins, 5 mcg/ml stomaches press down the enzyme peptide) results dissolving Chinese hamster ovary celI.
The Western blotting detects Expression of Fusion Protein, and one anti-ly is mouse-anti people P53 monoclonal antibody, and two anti-ly are rabbit anti-mouse igg, and test kit is a U.S. vector company product.Results suggest can be measured fusion rotein at about 60000 molecular weight places.
The fusion rotein function that detection present embodiment as described below makes.With the fusion protein immunization C57/BL6 mice of 2 milligrams of purification, totally three times once in a week, get mouse boosting cell 1 * 10 7With 20: 1 ratios and L002 cell (the people P53 transgenic cell) Mixed culture of shining (8000 cobalt sources draw) 5 days, imitate the concentration and the killing activity of wild type L002 Mixed culture mensuration splenocyte of target ratio again with difference to L002.Found that, imitated target with 1: 20 and can kill 95% L002 cell than in four hours, than the P53-CH3 vaccine that does not add toxin high about 20%.
Embodiment 4:Her2/neu tumor antigen vaccine
The Her2/neu complete sequence can obtain from gene bank (M11730) retrieval.The plasmid that contains this gene can obtain from U.S. ATCC.Her2/neu DNA with above-mentioned acquisition is the part DNA (5 ' PCR primer sequence AACCCGGTACCAGCACCCAAGTGTGCACC (SEQ ID NO:17), 3 ' PCR primer sequence AACCCCTCGAGTTGGTTGTGCAGGGGGCA (SEQ ID NO:18)) of template with the synthetic Her2/neu of PCR method.With restricted enzyme Kpn I/Xho I the part dna clone of Her2/neu is gone in the interior multiple clone site of pcDNA3.1 carrier (available from Invitrogene company).Equally, according to the operation of manufacturer's description, obtain the DNA (SEQID NO:7) of Fc section with Invitrogene company reverse transcription test kit from the synthetic cDNA of human B lymphocyte mRNA reverse transcription.
Equally, DNA with the Fc of above-mentioned acquisition is the fragment (5 ' PCR primer sequence AACCCCTCGAGGCAGAGCCCAAATCTTGTGA (SEQ ID NO:8), 3 ' primer sequence AACCCTCTAGATCATTTACCCGGAGACAG (SEQ ID NO:9)) of template with PCR method synthetic immunoglobulin Fc.With restricted enzyme Xho I/Xba I the Fc section is cloned in the pcDNA3.1 carrier in the corresponding site, makes it to be connected in series with Her2/neu.
Partial dna sequence GCCGCCGGTGAATGCGCGGGCCCGGCGGACAGCGGCGACGCCCTGCTGGAGCGCAA CTATCCCACTGGCGCGGAGTTCCTCGGCGACGGCGGCGACGTCAGCTTCAGCACCC GCGGCACGCAGAACTGGACGGTGGAGCGGCTGCTCCAGGCGCAC (SEQ ID NO:19) (its full length sequence can retrieve M23348 from gene pool) (5 ' PCR primer sequence is AACCCGGTACCGCCGCCGGTGAATGCGCG (SEQ ID NO:20), and 3 ' PCR primer sequence is AACCCGGTACCGTGCGCCTGGAGCAGCCG (SEQ ID NO:21)) with the synthetic pseudomonal toxin of PCR method. With restricted enzyme Kpn I toxin sequence is connected in series in the front end of P53, putting in order is toxin-Her2/neu-Fc.
After increasing, pcDNA3.1 uses Miniprep test kit plasmid DNA purification in DH-5 α (available from Invitragene company).Get the postdigestive DNA of 5-10ug, go into Chinese hamster ovary celI (available from U.S. ATCC), through G418 screening, monoclonalization with Superfectine test kit (Qiagene company) transduction.
The cell of amplification cloning is with dissolved cell buffer (20mM Tris pH7.5,150mM NaCl, 10mMDTT, 1mM Phenylmethanesulfonyl fluoride PMSF, 10 mcg/ml press down the enzyme peptide, 10 mcg/ml leupeptins, 5 mcg/ml stomaches press down the enzyme peptide) results dissolving Chinese hamster ovary celI.
The Western blotting detects Expression of Fusion Protein, and one anti-ly is mouse-anti people Her2/neu monoclonal antibody, and two anti-ly are rabbit anti-mouse igg, and test kit is a U.S. vector company product.Results suggest can be measured this fusion rotein at about 66000 molecular weight places.
The genetically modified mouse tumor cell of personnel selection Her2/neu is inoculated in the C57/BL mice, after seven days, and the fusion rotein 2mg of subcutaneous injection purification, per three days are once, totally five times.Her2/neu-Fc and toxin-Her2/neu-Fc all have obvious antineoplastic, and the most obvious with toxin-Her2/neu-Fc fusion rotein, after 20 days, can remove all tumors.
Although the invention describes concrete example, having a bit is significantly to those skilled in the art, promptly can do various variations and change to the present invention under the premise without departing from the spirit and scope of the present invention.Therefore, claims have covered all these changes within the scope of the present invention.
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Sequence table<110〉lijin<120〉new tumour antigen vaccine and preparation method thereof and vaccine combination<130〉025214<160〉21<170〉PatentIn version 3.1<210〉1<211〉106<212〉PRT<213〉homo sapiens (Homo sapiens)<400〉1Gln Pro Arg Glu Pro Gln Val Tyr Thr Leu Pro Pro Ser Arg Glu Glu1,5 10 15Met Thr Lys Asn Gln Val Ser Leu Thr Cys Leu Val Lys Gly Phe Tyr
20 25 30Pro?Ser?Asp?Ile?Ala?Val?Glu?Trp?Glu?Ser?Asn?Gly?Gln?Pro?Glu?Asn
35 40 45Asn?Tyr?Lys?Thr?Thr?Pro?Pro?Val?Leu?Asp?Ser?Asp?Gly?Ser?Phe?Phe
50 55 60Leu?Tyr?Ser?Lys?Leu?Thr?Val?Asp?Lys?Ser?Arg?Trp?Gln?Gln?Gly?Asn65 70 75 80Val?Phe?Ser?Cys?Ser?Val?Met?His?Glu?Ala?Leu?His?Asn?His?Tyr?Thr
85 90 95Gln?Lys?Ser?Leu?Ser?Leu?Ser?Pro?Gly?Lys
100 105<210〉2<211〉321<212〉DNA<213〉 ( Homo sapiens )<400〉2cagccccgag aaccacaggt gtacaccctg cccccatccc gggaggagat gaccaagaac 60caggtcagcc tgacctgcct ggtcaaaggc ttctatccca gcgacatcgc cgtggagtgg 120gagagcaatg ggcagccgga gaacaactac aagaccacgc ctcccgtgct ggactccgac 180ggctccttct tcctctatag caagctcacc gtggacaaga gcaggtggca gcaggggaac 240gtcttctcat gctccgtgat gcatgaggct ctgcacaacc actacacgca gaagagcctc 300tccctgtccc cgggtaaatg a 321<210〉3<211〉32<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉3aacccggtac cacaggttct ggtcatgcaa gc 32<210〉4<211〉33<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉4aacccctcga ggggggcggt ggagcccggg gcc 33<210〉5<211〉29<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉5aacccctcga gggcagcccc gagaaccac 29<210〉6<211〉29<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉6aaccctctag atcatttacc cggggacag 29<210〉7<211〉705<212〉DNA<213〉 ( Homo sapiens )<400〉7gcagagccca aatcttgtga caaaactcac acatgcccac cgtgcccagc acctgaactc 60ctggggggac cgtcagtctt cctcttcccc ccaaaaccca aggacaccct catgatctcc 120cggacccctg aggtcacatg cgtggtggtg gacgtgagcc acgaagaccc tgaggtcaag 180ttcaactggt acgtggacgg cgtggaggtg cataatgcca agacaaagcc gcgggaggag 240cagtacaaca gcacgtaccg tgtggtcagc gtcctcaccg tcctgcacca ggactggctg 300aatggcaagg agtacaagtg caaggtctcc aacaaagccc tcccagcccc catcgagaaa 360accatctcca aagccaaagg gcagccccga gaaccacagg tgtacaccct gcccccatcc 420cgggatgagc tgaccaagaa ccaggtcagc ctgacctgcc tggtcaaagg cttctatccc 480agcgacatcg ccgtggagtg ggagagcaat gggcagccgg agaacaacta caagaccacg 540cctcccgtgc tggactccga cggctccttc ttcctctaca gcaagctcac cgtggacaag 600agcaggtggc agcaggggaa cgtcttctca tgctccgtga tgcatgaggc tctgcacaac 660cactacacgc agaagagcct ctccctgtct ccgggtaaat gataa 705<210〉8<211〉30<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉8tacctttcgg gagcgaacct caacctctcc 30<210〉9<211〉64<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉9aacccggtac catgtacctt tcgggagcga acctcaacct ctccgcagag cccaaatctt 60gtga 64<210〉10<211〉29<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉10aaccctctag attatcattt acccggaga 29<210〉11<211〉393<212〉PRT<213〉 ( Homo sapiens )<400〉11Met Glu Glu Pro Gln Ser Asr Pro Ser Val Glu Pro Pro Leu Ser Gln1 5 10 15Glu Thr Phe Ser Asp Leu Trp Lys Leu Leu Pro Glu Asn Asn Val Leu
20 25 30Ser?Pro?Leu?Pro?Ser?Gln?Ala?Met?Asp?Asp?Leu?Met?Leu?Ser?Pro?Asp
35 40 45Asp?Ile?Glu?Gln?Trp?Phe?Thr?Glu?Asp?Pro?Gly?Pro?Asp?Glu?Ala?Pro
50 55 60Arg?Met?Pro?Glu?Ala?Ala?Pro?Pro?Val?Ala?Pro?Ala?Pro?Ala?Thr?Pro65 70 75 80Thr?Pro?Ala?Ala?Pro?Ala?Pro?Ala?Pro?Ser?Trp?Pro?Leu?Ser?Ser?Ser
85 90 95Val?Pro?Ser?Gln?Lys?Thr?Tyr?Gln?Gly?Ser?Tyr?Gly?Phe?Arg?Leu?Gly
100 105 110Phe?Leu?His?Ser?Gly?Thr?Ala?Lys?Ser?Val?Thr?Cys?Thr?Tyr?Ser?Pro
115 120 125Ala?Leu?Asn?Lys?Met?Phe?Cys?Gln?Leu?Ala?Lys?Thr?Cys?Pro?Val?Gln
130 135 140Leu?Trp?Val?Asp?Ser?Thr?Pro?Pro?Pro?Gly?Thr?Arg?Val?Arg?Ala?Met145 150 155 160Ala?Ile?Tyr?Lys?Gln?Ser?Gln?His?Met?Thr?Glu?Val?Val?Arg?Arg?Cys
165 170 175Pro?His?His?Glu?Arg?Cys?Ser?Asp?Ser?Asp?Gly?Leu?Ala?Pro?Pro?Gln
180 185 190His?Leu?Ile?Arg?Val?Glu?Gly?Asn?Leu?Arg?Val?Glu?Tyr?Leu?Asp?Asp
195 200 205Arg?Asn?Thr?Phe?Arg?His?Ser?Val?yal?Val?Pro?Tyr?Glu?Pro?Pro?Glu
210 215 220Val?Gly?Ser?Asp?Cys?Thr?Thr?Ile?His?Tyr?Asn?Tyr?Met?Cys?Asn?Ser225 230 235 240Ser?Cys?Met?Gly?Gly?Met?Asn?Arg?Arg?Pro?Ile?Leu?Thr?Ile?Ile?Thr
245 250 255Leu?Glu?Asp?Ser?Ser?Gly?Asn?Leu?Leu?Gly?Arg?Asn?Ser?Phe?Glu?Val
260 265 270Arg?Val?Cys?Ala?Cys?Pro?Gly?Arg?Asp?Arg?Arg?Thr?Glu?Glu?Glu?Asn
275 280 285Leu?Arg?Lys?Lys?Gly?Glu?Pro?His?His?Glu?Leu?Pro?Pro?Gly?Ser?Thr
290 295 300Lys?Arg?Ala?Leu?Pro?Asn?Ash?Thr?Ser?Ser?Ser?Pro?Gln?Pro?Lys?Lys305 310 315 320Lys?Pro?Leu?Asp?Gly?Glu?Tyr?Phe?Thr?Leu?Gln?Ile?Arg?Gly?Arg?Glu
325 330 335Arg?Phe?Glu?Met?Phe?Arg?Glu?Leu?Asn?Glu?Ala?Leu?Glu?Leu?Lys?Asp
340 345 350Ala?Gln?Ala?Gly?Lys?Glu?Pro?Gly?Gly?Ser?Arg?Ala?His?Ser?Ser?His
355 360 365Leu?Lys?Ser?Lys?Lys?Gly?Gln?Ser?Thr?Ser?Arg?His?Lys?Lys?Leu?Met
370 375 380Phe Lys Thr Glu Gly Pro Asp Ser Asp385 390<210〉12<211〉32<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉12aacccggtac catggaggag ccgcagtcag at 32<210〉13<211〉29<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉13aacccctcga ggtctgagtc aggcccttc 29<210〉14<211〉120<212〉DNA<213〉<220〉<221〉misc_feature<223〉DNA<400〉14aacttttctt cgtaccacgg gactaaacct ggttatgtag attccattca aaaaggtata 60caaaagccaa aatctggtac acaacgaaat tatgacgatg attggaaagg gttttatagt 120<210〉15<211〉30<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉15aacccggtac caacttttct tcgtaccacg 30<210〉16<211〉30<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉16aacccggtac cactataaaa ccctttccaa 30<210〉17<211〉29<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉17aacccggtac cagcacccaa gtgtgcacc 29<210〉18<211〉29<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉18aacccctcga gttggttgtg cagggggca 29<210〉19<211〉156<212〉DNA<213〉<220〉<221〉misc_feature<223〉DNA<400〉19gccgccggtg aatgcgcggg cccggcggac agcggcgacg ccctgctgga gcgcaactat 60cccactggcg cggagttcct cggcgacggc ggcgacgtca gcttcagcac ccgcggcacg 120cagaactgga cggtggagcg gctgctccag gcgcac 156<210〉20<211〉29<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉20aacccggtac cgccgccggt gaatgcgcg 29<210〉21<211〉29<212〉DNA<213〉<220〉<221〉misc_feature<223〉<400〉21aacccggtac cgtgcgcctg gagcagccg 29

Claims (10)

1. an isolating tumor antigen vaccine is characterized in that, it comprises to come the amino acid whose sequence more than 7 or 7 of self tumor antigen and the CH3 aminoacid sequence partly of immunoglobulin, and above-mentioned two sequences interconnect.
2. tumor antigen vaccine according to claim 1, it is characterized in that, described tumor antigen is selected from 707-AP, AFP, ART-4, BAGE B, β-catenin/m, bcr-abl, CAMEL, CAP-1, CASP-8, CDC27m, CDK4/m, CEA, CT, Cyp-B, DAM, ELF2M, ETV6-AML1, ETS, G250, GAGE, GnT-V, GP100, HAGE, HER-2/NEU, HLA-A*0201-R170I, HPV-E6, HPV-E7, EBNA, HSP70-2M, HST-2, hTERT, iCE, KIAA0205, LAGE, LDLR/FUT, GDP-Lfucose, MAGE, MART-1/Melan-A, MC1R, Myosin/m, MUC1, MUM-1,-2 ,-3, NA88-A, NY-ESO-1, P15, p190, P53, Pml/RAR α, PRAME, PSA, PSM, RAGE, RAS, RU1, RU2, SAGE, SART-1, SART-3, TEL/AML1, TPI/m, TRP-1, gp75, TRP-2, TRP-2/INT2, and WT1.
3. tumor antigen vaccine according to claim 1 is characterized in that it contains the immunoglobulin Fc fragment.
4. tumor antigen vaccine according to claim 1 is characterized in that it also contains the toxin fragment.
5. tumor antigen vaccine according to claim 4 is characterized in that, described toxin fragment is the toxin fragment that is selected from diphtheria verticillium toxin, bacillus pertussis toxin, pseudomonal toxin, anthrax toxin and tetanus toxin.
6. a dna molecular is characterized in that, it contains the nucleotide sequence of the described tumor antigen vaccine of coding claim 1.
7. vaccine combination, it contains the described tumor antigen vaccine of claim 1 and the pharmaceutically acceptable carrier of effective dose on the drug effect.
8. an expression vector is characterized in that, it contains the described dna molecular of claim 6.
9. a host cell is characterized in that, it is transformed by the described expression vector of claim 8.
10. a method for preparing the described tumor antigen vaccine of claim 1 is characterized in that, this method comprises:
A) provide an expression vector, this expression vector contains the nucleotide sequence of the described tumor antigen vaccine of coding claim 1 and the expression regulation sequence that links to each other with this nucleotide sequence operability;
B) with the expression vector transformed host cell in the step a);
C) host cell of gained incubation step b under the condition that is fit to the described tumor antigen vaccine of expression); With
D) separation and purification obtains the expressed tumor antigen vaccine that goes out.
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