CN1821410A

CN1821410A - Recombinant adenovirus containing codon optimized type IIPV16L1 gene

Info

Publication number: CN1821410A
Application number: CN 200610056900
Authority: CN
Inventors: 曾毅; 周玲; 周玉柏; 吴小兵
Original assignee: 曾毅
Current assignee: National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and Prevention
Priority date: 2006-03-13
Filing date: 2006-03-13
Publication date: 2006-08-23
Anticipated expiration: 2026-03-13
Also published as: CN100392084C

Abstract

The present invention belongs to the field of biological engineering and tumor treating technology, and discloses the codon optimizing gene sequence coding the main capsid protein L1 of HPV16, replication-defective recombinant adenovirus containing codon optimizing HPV16L1 gene.

Description

The recombinant adenovirus that contains codon optimized type IIPV 16 L 1 gene

Invention field

The invention belongs to biotechnology and oncotherapy field.More specifically, the present invention relates to contain duplicate deficit type recombinant adenovirus of codon optimized type IIPV 16 L 1 gene and preparation method thereof.

Background of invention

(human papilloma virus HPV) belongs to papovaviridae to human papillomavirus, is nonencapsulated closed loop double-stranded DNA virus.According to nucleotide sequence homology, HPV can be divided into more than 80 type, causes multiple disease.Now clear and definite, the HPV of high-risk-type wherein, closely related as the generation of HPV16,18 persistent infection and cervical cancer, the main diseases that is confirmed as causing cervical cancer because of, wherein again with HPV16 type the most common (Bosch F X, J Natl Cancer Inst, 1995,87:796-802.).

It is a kind of common sexually transmitted disease (STD) that human papillomavirus (HPV) infects, and can cause Genital warts and cervical cancer (ZurHausen H, Nat Rev Cancer, 2002,2:342-350.; Clifford G M, Br J Cancer, 2003,88:63-73.; Bosch F X, J Natl Cancer Inst, 1995,87:796-802.).The statistical information of the World Health Organization shows, cervical cancer occupies second in global woman cancer mortality ratio, in some developing countries even occupy the first, the annual whole world nearly 500,000 routine New Development cases of cervical cancer, about 200,000 people die from cervical cancer, wherein, 80% death occurs in developing country (WorldHealth Report 2004:Changing History.Statistical Annex).According to incompletely statistics, the existing cervical cancer patient of China is about 13.8 ten thousand, has every year 50000 people to die from cervical cancer approximately.A large amount of research datas prove, very confidential relation is arranged between the HPV persistent infection of the generation of cervical cancer and reproductive tract, wherein common with the HPV16 type again, surpass 50% cases of cervical cancer and relevant (the Bosch F X of HPV16 infection, J Natl Cancer Inst, 1995,87:796-802.).At present, still there are not the effective measure that prevention HPV16 infects clinically, therefore, develop efficient, cheap HPV preventative vaccine, produce specific antibody by the immunization excitating organism, blocking-up HPV virus is invaded body, thereby reduce the incidence of cervical cancer, seem particularly important.

The main capsid protein L 1 of HPV16 is the structural protein of virus, and it constitutes viral grain pattern jointly with less important capsid protein L2.The L1 albumen of eukaryotic expression system preparation can self-assembling assembly virus-like particle (Virus-Like Particles), has space structure and the epitope quite similar with the natural viral particle, is the antigen that ideal brings out humoral immune reaction.But,, thereby cause HPV16L1 gene expression level in mammalian cell low because wild-type L1 gene has notable difference with mammalian cell on codon preference.Therefore, the codon of HPV16 L1 gene is transformed its expression level in mammalian cell of raising, have crucial meaning.

The main capsid protein L 1 of HPV16 can oneself's assembling form virus-like particle (VLPs) structure, and it has space structure and the epitope quite similar with the natural viral particle, and does not contain HPV DNA.Experimentation on animals is the result show, the virus-like particle immunity can produce the serum neutralizing antibody of high titre in animal body, can watch for animals and avoid the experimental attack of HPV.And this provide protection can be along with the serum transmission of animal.

Though virus-like particle (VLPs) vaccine that HPV16 L1 albumen oneself assembling forms has good immune effect, its purifying process is loaded down with trivial details, and is with high costs, is unfavorable for promoting in developing country.Therefore, the inventor attempts to make up a kind of with low cost, and effectively excitating organism produces the vaccine of specific humoral immunity reaction simultaneously, as the alternative vaccine of HPV16 L1 virus-like particle (VLPs) vaccine.

In view of high-risk HPV have a liking for the mucous membrane characteristic and with the substantial connection of cervical cancer, the vaccine that effectively prevents HPV to infect should be able to provide immanoprotection action in the reproductive tract mucous membrane part of poisoning intrusion.Secretory IgA (SIgA) can combine with viral, stops its epithelial attachment cell, and therefore, the research emphasis of HPV preventative vaccine turns on gradually at the reproductive tract mucomembranous surface and excites having on the active SIgA of virus neutralization of sufficient intensity.

Studies show that, the duplicate deficit type recombinant adenovirus preferendum is extensive, can infect the various kinds of cell that comprises mucomembranous epithelial cell, mediate foreign gene is at intracellular stably express and stimulate body to produce specificity humoral and cell immune response, recombinant adenovirus can infect by digestive tube and respiratory tract approach, be considered to induce one of carrier ideal in the body mucosal immunity, it can not only mediate foreign gene effective expression, also can give immunity system with antigen presentation by the natural infection approach, effectively excite specific immune response (the Xiang Z Q of local and far-end mucomembranous surface, Pasquini S, Ertl H C J.Induction ofgenital immunity by DNA priming and intranasal booster immunization with a replication-defective adenoviralrecombinant[J] .J Immunol, 1999,162:6716-6723).And the recombinant adenovirus virus gene is not integrated with the recipient cell genome, has good biological safety (McConnell M J, Human Gene Therapy, 2004,15 (11): 1022-1033.).Be convenient to large scale culturing preparation, therefore advantage such as with low cost is one of ideal HPV candidate preventative vaccine.So we determine with the virus vector of recombinant adenovirus as codon optimized type HPV16 L1 gene.

Summary of the invention

The invention provides the gene order of the main capsid protein L 1 of a kind of codon optimized type coding HPV16.

The invention provides a kind of duplicate deficit type recombinant adenovirus, wherein contain described codon optimized type IIPV 16 L 1 gene sequence.

An aspect, the invention provides a kind of gene order (mod.HPV L1) of the main capsid protein L 1 of coding papilloma virus 16 types (HPV16) of codon optimized type, this gene is under the condition that does not change the main capsid protein L 1 aminoacid sequence of HPV16, and the codon that uses with the Mammals high frequency replaces that the codon of HPV16 L1 gene order obtains.

In one embodiment, described gene has the nucleotide sequence shown in the SEQ ID NO:1.

The humoral immunization effect that strengthens vaccine can realize by the expression level that improves related antigen, be exactly to improve the expression level of the main capsid protein L 1 of HPV in mammalian cell for the HPV16 preventative vaccine.To the analysis revealed of wild-type HPV16L1 gene, its codon uses preference and Mammals to exist than big-difference, and this can cause in the host cell service efficiency of isoacceptor low, thus the speed of reduction protein translation.The inhibition element that people such as Tan find to exist limit protein to express in HPV16 L1 open reading frame (Tan W, J Virol, 1995,69:5607-5620.).Our research proves that also the expression level of wild-type HPV16 L1 gene in mammalian cell is extremely low, even also can't detect tangible protein expression by the Western trace down adenovirus vector-mediated.Therefore, the codon to HPV16 L1 gene is optimized and can improves the expression level of gene in mammalian cell by service efficiency and the inhibition element in the mutator gene sequence that improves isoacceptor.We are carrying out when codon optimized, arginine the 30th, 41,71,74 of L1 albumen n ends has used inferior high frequency codon CGC and CGG, and all the other amino acid code all replace with the codon (shown in SEQ ID NO:1) that the Mammals high frequency uses.Optimized gene GC content is increased to 64% by 38%, this with Mammals codon the 3rd bit base preference G, C the ending report consistent (Nakamura Y, Nucleic AcidsRes, 2000,28:292.).Prove by the sequence homology comparison: the nucleotide sequence of codon optimized type IIPV 16 L 1 gene of the present invention (mod.HPV16L1) and reorganization HPV16L1 gene (WO 01/14416 A2 of the prior art, and Leder C, J Virol, 2001,75:9201-9209) all inequality.

On the other hand, the invention provides a kind of duplicate deficit type recombinant adenovirus, wherein contain the gene of the main capsid protein L 1 of coding papilloma virus 16 types (HPV16) of described optimization type.

In order to obtain carrying the duplicate deficit type recombinant adenovirus of codon optimized type IIPV 16 L 1 gene, we are at first by the synthetic codon optimized type IIPV 16 L 1 gene that obtains of full gene, and with its directed cloning in recombinant adenovirus shuttle plasmid PDC316, the adenovirus packaging cell that oneself knows with known recombinant adenovirus skeleton plasmid cotransfection then., and under the proteic acting in opposition of the E1 that provides by described packing cell packaging virus (referring to Fig. 2).

In a preferred embodiment, wherein said adenovirus shuttle plasmid is plasmid PDC316.

In a preferred embodiment, wherein said recombinant adenovirus skeleton plasmid is plasmid pBHGlox Δ E1,3Cre.

In a preferred embodiment, wherein said adenovirus packaging cell is 293 cells.

In a preferred embodiment of the invention, the virus titer of described duplicate deficit type recombinant adenovirus is not less than 108PFU/ml.

Western trace test detected result shows: compare with wild type gene, the expression level of optimization type HPV16L1 gene of the present invention (mod.HPV16L1) in mammalian cell improved about 50 times.This shows that we are successful to the transformation of HPV16L1 gene, and the mod.HPV16L1 gene can obtain to efficiently express in mammalian cell down adenovirus vector-mediated.So the replication-defective adenoviral of the mod.HPV16L1 of containing gene of the present invention can be used as exploitation and prevents and/or treats the vaccine of cervical cancer and effective material standed for of medicine.

Therefore, on the other hand, the invention provides optimization type HPV16L1 gene recombinant adenovirus is used for preventing and/or treating the vaccine and the medicine of cervical cancer in preparation the purposes that contains of the present invention

On the other hand, the invention provides the method for the duplicate deficit type recombinant adenovirus (rAd-mod.HPVL1) of a kind of mod.HPV of containing L1, this method comprises:

(1) codon that uses by usefulness Mammals high frequency replaces the codon of HPV16L1 gene order, obtains the codon optimized type IIPV 16 L 1 gene sequence;

(2) the codon optimized type IIPV 16 L 1 gene sequence clone that carries that step (1) is obtained is gone into adenovirus shuttle plasmid, obtains carrying the recombinant adenovirus shuttle plasmid of codon optimized type IIPV 16 L 1 gene sequence;

(3) recombinant adenovirus shuttle plasmid and the suitable adenovirus packaging cell of recombinant adenovirus skeleton plasmid cotransfection that obtains with step (2) obtains carrying the duplicate deficit type recombinant adenovirus of optimization type HPV16L1 gene order.

In a specific embodiments of the present invention, described adenovirus shuttle plasmid is plasmid PDC316.

In a specific embodiments of the present invention, described recombinant adenovirus skeleton plasmid is plasmid pBHGlox Δ E1,3Cre.

In a specific embodiments of the present invention, wherein said adenovirus packaging cell is 293 cells.

The accompanying drawing summary

Fig. 1 is illustrated to be the structural representation of recombinant adenovirus shuttle plasmid (Figure 1A) and recombinant adenovirus skeleton plasmid (Figure 1B).

Fig. 2 is illustrated to be recombinant adenovirus packing (structure) schema.

What Fig. 3 showed is to detect codon optimized type IIPV 16 L 1 gene transcriptional level in 293 cells that the recombinant adenovirus of the present invention (rAd-mod.HPV16L1) that obtains infects by RT-PCR and SDS-PAGE method.Swimming lane 1 is the RT-PCR product of normal 293 cell total rnas; Swimming lane 2 is the RT-PCR products that infect 293 cell total rnas of wild-type adenovirus (Ad5); Swimming lane 3 is the RT-PCR products that infect 293 cell total rnas of recombinant adenovirus of the present invention (rAd-mod.HPV16L1); Swimming lane 4 is DL2000DNA Marker.

What Fig. 4 showed is that immune marking method detects the interior proteic expression of L1 of 293T cell that rAd-mod.HPV16L1 infects.Wherein swimming lane 1 is the 293T cell that Ad5 infects; Swimming lane 2 is the 293T cells that contain the recombinant adenovirus rAd-wt.HPV16L1 infection of wild-type HPV16L1 gene; Swimming lane 3 is 293T cells that rAd-mod.HPV16L1 infects.Swimming lane 4 is that albumen dyes Marker in advance.

Fig. 5 is illustrated to be that the interior L1 albumen oneself of 293T cell that electron microscopic observation rAd-mod.HPV16L1 infects assembles the virus-like particle structure that forms.

The following example is intended to further illustrate rather than limit the present invention.What should spell out is that under the prerequisite of the spirit and principles in the present invention, any change and change that indivedual inessential technical characterictic of the present invention is made all will fall in the claim scope that awaits the reply of the present invention.In addition, as previously mentioned, owing to be used to realize that molecular biology correlation technique of the present invention and vector plasmid all are known, can directly obtain from various sources, and also oneself has done complete, clearly description to method of the present invention for the detailed description of this specification sheets part and related embodiment part, can repeat and reproduce the present invention so the applicant believes those skilled in the art fully after having read over this specification sheets.

Embodiment

Material and method

Plasmid extracts test kit QIAGEN Plasmid Midi Kits in a large number available from German QIAGEN company.Restriction enzyme commonly used, T4 dna ligase, rTaq enzyme, nucleic acid gel-purified test kit and RT-PCR test kit are available from the precious biotechnology in Dalian company limited.Lipofectamine Lipofectamine 2000, Opti-MEM and TRIzol reagent are available from American I nvitrogen company.Mouse anti HPV16L1 monoclonal antibody (camvir-1) is available from Chemicon company.Brij58, Benzonase are available from Sigma company.Optiprep is available from Axis-shield company.BCA protein quantification test kit is available from Pierce company.Horseradish enzyme labelling goat anti-mouse igg antibody is available from biotech company of China fir Golden Bridge in Beijing.Low molecular weight protein (LMWP) is dyed marker in advance available from crystalline substance U.S. biotech firm.Nitrocellulose filter is available from Pall company.

Recombinant adenovirus shuttle plasmid PDC316, recombinant adenovirus skeleton plasmid pBHGlox Δ E1,3Cre and adenovirus packaging cell (293 cell) are all available from Canadian Microbix Biosystems Inc. company.

Molecular biology correlation technique involved in the present invention such as nucleic acid operative technique, protein qualitative and quantitative analysis etc. in scientific literature, all have fully and describe (as referring to J Sa nurse Brooker EF not Ritchie T Manny want the base of a fruit this, molecular cloning experiment guide (second edition)).

Embodiment 1

The preparation of codon optimized type IIPV 16 L 1 gene

According to mammalian cell access to your password the son inclined to one side preferendum and the known array (GenBank accession number AY686583) of HPV16L1, under the prerequisite that does not change aminoacid sequence, codon to wild-type HPV16L1 gene is transformed, remove the 30th, 41st, 71,74 arginine has used respectively beyond inferior high frequency codon CGC and the CGG, and all the other amino acid whose codons all replace with the codon that the mammalian cell high frequency uses.It is synthetic by the full gene of Shanghai Bo Ya Bioisystech Co., Ltd to transform the back sequence, and called after mod.HPV16L1 also is cloned into the PUC18 carrier, called after PUC-mod.HPV16L1.Sequencing shows: composition sequence is in full accord with design, and the gene after the optimization has the nucleotide sequence shown in SEQ ID NO:1.Optimized gene GC content is increased to 64% by 38%.

Embodiment 2

The structure that contains the codon optimized type IIPV 16 L 1 gene duplicate deficit type recombinant adenovirus

Below by describing the structure flow process (referring to Fig. 2) contain the codon optimized type IIPV 16 L 1 gene duplicate deficit type recombinant adenovirus step by step in detail.

1. the structure that contains codon optimized type IIPV 16 L 1 gene recombinant adenovirus shuttle plasmid

(1) preparation of bacillus coli DH 5 alpha competent cell:

The single bacterium colony of picking DH5 α from 37 ℃ of fresh flat boards of cultivating 16～20h is inoculated in 5ml and does not contain in the LB substratum of antibiotic 37 ℃ of thermal agitation overnight incubation (12～16h).From above-mentioned culture, draw 0.5ml next day and continue to cultivate about 3h in the 50ml LB substratum by changing at 1: 100, to the OD600 value of bacterium liquid be 3 o'clock, under aseptic condition, bacterium is transferred in aseptic, the ice-cold 50ml centrifuge tube ice bath 30min.Under 4 ℃ of conditions, the centrifugal 10min of 4000rpm abandons supernatant, will manage and be inverted 1min, residual nutrient solution is flow to end, with the resuspended bacterial precipitation of the ice-cold 100mmol/L CaCl2 of 10ml solution, ice bath 30min.4 ℃, the centrifugal 10min of 4000rpm abandons supernatant, and every 50ml initial incubation thing is distributed into the every pipe of 200 μ l with the resuspended bacterial precipitation of 100mmol/L CaCl2 solution that contains 15% glycerine of 2ml precooling, and-80 ℃ of preservations are standby.

(2) conversion of PUC-mod.HPV16L1 plasmid:

Draw the plasmid (PUC-mod.HPV16L1 that 1 μ l contains codon optimized type IIPV 16 L 1 gene with aseptic suction nozzle, synthetic and be cloned on the PUC18 plasmid by the full gene of Shanghai Bo Ya Bioisystech Co., Ltd) add in the 200 μ l DH5 α competent cells, rotate mixing gently, ice bath 30min.To manage and move into water-bath 90s in 42 ℃ of water baths, will manage then and transfer to fast in the ice bath, make cell cooling 1～2min.Every pipe adds 800 μ l and does not contain antibiotic LB substratum, pipe is transferred on 37 ℃ of shaking tables, incubation 45min (rotating speed＜150rpm).Get the competent cell that 50 μ l have transformed, be coated onto gently with an aseptic elbow glass rod and contain corresponding antibiotic agar plate surface, place room temperature to liquid to be absorbed flat board, be inverted plate, cultivate 12～16h in 37 ℃.

(3) a small amount of of PUC-mod.HPV16L1 plasmid prepares, enzyme is cut and electrophoretic analysis

The single PUC-mod.HPV16L1 conversion of picking bacterium colony is inoculated in 5ml and contains in the LB substratum of penbritin 37 ℃ of thermal agitation overnight incubation.Culture is moved in the 1.5ml Eppendorf pipe, the centrifugal 30-60s of 12000rpm, remove nutrient solution, be inverted centrifuge tube, supernatant is flow to end, with solution I [50mmol/L Glucose, the 25mmol/LTris-HCl (pH8.0) of 100 μ l precoolings, 10mmol/L EDTA (pH8.0)] resuspended thalline, the thermal agitation mixing; Add the freshly prepared solution II of 200 μ l (0.2mol/L NaOH, 1%SDS), gentle mixing, ice bath 3min, limpid to liquid; The solution III that adds 150 μ l precoolings (contains 5mol/L KAc 60ml among the 100ml, glacial acetic acid 11.5ml, water 28.5ml) gentle mixing, ice bath 10min, the centrifugal 10min of 12000rpm, the careful supernatant of drawing, supernatant is transferred in another centrifuge tube, add the dehydrated alcohol precipitation at room temperature 30min of 2 times of volumes, the centrifugal 10min of 12000rpm abandons supernatant, precipitation is washed once with 70% ethanol, after room temperature is dried, contain TE (pH8.0) dissolution precipitation of RNaseA (100 μ g/ml) with 30 μ l, 37 ℃ of water-bath 30～60min postposition-20 ℃ preservations are standby.

The condition that provides according to supplier, the plasmid PUC-mod.HPV16L1 that uses restriction enzyme EcoRI and HindIII digestion as above to prepare in a small amount, separate enzyme with 1% sepharose then and cut product, under ultraviolet lamp, downcut and contain the segmental sepharose of purpose, use the TaKaRa Agarose Gel DNA Purification Kit of company test kit that the target DNA mod.HPV16L1 of 1500bp size is reclaimed, concrete operations are referring to the related description book.

(4) structure of recombinant adenovirus shuttle plasmid:

Use restriction enzyme EcoRI and HindIII digestion recombinant adenovirus shuttle plasmid PDC316, then recovery fragment and the same mod.HPV16L1 fragment that reclaims with EcoRI and HindIII double digestion are pressed 1: 4 mixed, add 10 * T4 dna ligase damping fluid and T4 dna ligase successively, reaction volume is 10 μ l, 16 ℃ of connections are spent the night, and get 10 μ l ligation product transformed into escherichia coli DH5 α competent cells.Several single bacterium colonies of picking from the LB agar plate of inoculation converted product are inoculated into 5ml and contain in the corresponding antibiotic LB substratum, and 37 ℃ of thermal agitation overnight incubation are extracted plasmid by the quick a small amount of preparation method of aforementioned plasmid.And with restriction endonuclease EcoRI and HindIII plasmid is carried out enzyme and cut evaluation, select positive recombinant.Called after PDC-mod.HPV16L1.

2. the structure that contains the codon optimized type IIPV 16 L 1 gene recombinant adenovirus

(1) preparation of recombinant adenovirus shuttle plasmid PDC-mod.HPV16L1 and skeleton plasmid:

Use plasmid to extract test kit QIAGEN Plasmid Midi Kits in a large number and extract recombinant adenovirus skeleton plasmid pBHGlox Δ E1 respectively, 3Cre and the recombinant adenovirus shuttle plasmid PDC-mod.HPV16L1 that contains the mod.HPV16L1 gene.Concrete experimental procedure is seen QIAGEN Plasmid Midi Kits service manual.

(2) packing of recombinant adenovirus

The day before yesterday is gone down to posterity 293 cells in the 25cm2 Tissue Culture Flask in transfection, the substratum DMEM that does not contain microbiotic, contains 5%FCS.Preparation transfection liquid: A liquid: be dissolved in the recombinant adenovirus shuttle plasmid of pure water and each 5 μ l of skeleton plasmid DNA (each 4 μ g) and Opti-MEM substratum totally 250 μ l; B liquid: 5 μ l LipofectamineTM2000 and Opti-MEM nutrient solution be totally 250 μ l.B liquid chamber temperature is placed 5min, and A and B liquid is mixing gently, and room temperature is placed 20min.Old cell culture fluid is abandoned in suction, changes fresh not the containing microbiotic, contain the DMEM of 5% FCS of 2ml, then the A+B mixed solution is added on the culturing cell, and in 37 ℃, 5% CO2 is hatched 8h, replenishes fresh substratum 2.5ml.Changing the DMEM that contains 2%FCS behind the 24h keeps.After the transfection 7～10 days, scrape with cell cell is scraped, the centrifugal 5min of 800rpm abandons supernatant, with the aseptic PBS re-suspended cell precipitation of 2ml;-20 ℃ and 37 ℃ of multigelations 4 times; The centrifugal 10min of 3000rpm draws supernatant, is former generation virus, called after rAd-mod.HPV16L1, and-70 ℃ of preservations are standby.Inoculate 293 cells with the 1ml supernatant, 37 ℃, 5% CO2 is hatched 1h, adds the DMEM that contains 2% calf serum then and keeps liquid (6ml) and observation of cell pathology.

Observations shows, typical cytopathies such as cellular swelling, circle contract appear in 293 transfected cells.

Embodiment 3

The evaluation of recombinant adenovirus rAd-mod.HPV16L1, virus titer analysis

With HPV16L1 prion sample particulate electron microscopic observation

(1) mod.HPV16L1 gene transcription in 293 cells of recombinant adenovirus infection:

The TRIzol single stage method is extracted normal 293 cells respectively and has been infected rAd-mod.HPV16L1 and total RNA of 293 cells of Ad5 (adenovirus that does not contain mod.HPV L1 of the present invention, contrast is used), carries out RT-PCR and identifies.The RT-PCR reaction parameter is as follows: the reverse transcription system is 20 μ l.With 1 μ g cell total rna is template, Oligod (T) 15 is a primer, 50 ℃ of 30min carry out reverse transcription reaction, 94 ℃ of 2min deactivation reversed transcriptive enzymes are that template is carried out PCR reaction, 94 ℃ of 1min with synthetic cDNA, 58 ℃ of 30s, 72 ℃ of 90s, 30 circulations are got 5 μ l PCR and RT-PCR reaction product and are carried out the agarose gel electrophoresis analysis.The result shows, 1500bp left and right sides specific band all can increase in the total DNA of 293 cells that rAd-mod.HPV16L1 infects and RNA and the employing virus cracking liquid, and Ad5 street strain and normal 293 cell results are all negative, this shows that the mod.HPV16L1 gene correctly inserts in the adenoviral gene group, and can effectively transcribe (referring to Fig. 3).

(2) mod.HPV16L1 expression of gene in the 293T cell of recombinant adenovirus infection:

Respectively with rAd-mod.HPV16L1, rAd-wt.HPV16L1 and the Ad5 virus infection 1 * 10 of 1PFU/cell titre ⁶293 cells behind the 48h scrape cell, and ice precooling PBS washes 2 times, extracts total protein of cell according to the explanation of TRIzol reagent, be dissolved in the 1%SDS solution, and 0.1% SDS dialysis 3 times, 4 ℃ of centrifugal 10min of 10000g collect supernatant.BCA total protein of cell content is adjusted protein concentration to 5mg/ml.The total protein of cell that extracts with 50 μ g TRIzol carries out the SDS-PAGE electrophoresis, changes film.With mouse-anti HPV 16 L1 monoclonal antibodies (camvir-1) is one anti-, and horseradish enzyme labelling goat anti-mouse igg antibody is two anti-, carries out the Western engram analysis.

Western trace detected result shows: rAd-wt.HPV16L1 almost cannot see band, and the visible significantly 55kD band of rAd-mod.HPV16L1, Ad5 does not detect the expression (referring to Fig. 4) of target protein.The mod.HPV16L1 gene has obtained to efficiently express under mediated by recombinant adenovirus.

By comparing the power of each bar band signal of Western blot, we extrapolate the optimized gene expression level and have improved 50 times at least.This shows that the expression of optimized gene mod.HPV16L1 in mammalian cell has very significant raising than wild type gene, prove that we are successful to the transformation of HPV16L1 gene, the mod.HPV16L1 gene can obtain to efficiently express in mammalian cell down adenovirus vector-mediated.

(3) mensuration of recombinant adenovirus titre

TCID ₅₀The basis of experiment is to use the Method of Limited Dilution method to make 293 cells thereby pathology estimation titre occur.The preparation of cell: prepare the DMEM re-suspended cell that 10ml contains 2% foetal calf serum, cell concn is transferred to 1 * 10 ⁵/ ml is inoculated in 96 porocyte culture plates, and every hole adds 100 μ l.Behind the cell attachment, supernatant is discarded.The dilution of virus: add the DMEM that 0.9ml contains 2% foetal calf serum in first pipe, all the other then add 1.8ml.Add the 0.1ml virus stock solution used in first pipe.Aspirate 5 times up and down and make their mixings.All change suction nozzle after the dilution each time.From first pipe, draw 0.2ml and add second pipe.Repeat this dilution step up to high dilution.Each of 96 orifice plates is arranged 10 holes as an extent of dilution.11,12 row do not add virus as negative control.The every hole of experimental port adds the different extent of dilution viruses of 0.1ml.96 orifice plates are placed on 37 ℃ of incubators cultivated 10 days, observe pathology.As long as there is this hole of little pathology promptly to treat as the positive, can be relatively if be difficult for judgement with negative control.T=10 by formula at last ^{1+d (s-0.5)}Calculate virus titre (d is dilution logarithmic value, s be the pathology ratio and).

Detected result shows, the 6th generation virus titer reach 4 * 10 ⁸PFU/ml.

(4) HPV16L1 prion sample particulate electron microscopic observation:

The rAd-mod.HPV16L1 recombinant adenovirus infects 5 * 10 with the 1PFU/cell titre ⁸The 293T cell, the 48h harvested cell, purification process (Pyeon D with reference to Pyeon D report, Proc Natl Acad Sci USA, 2005,102:9311-9316.), the D-PBS re-suspended cell that contains 10mmol/L MgCl2 with 1ml, add Brij58 and hatch 24h for 0.25%, 37 ℃, add 0.2% Benzonase nuclease and hatch 30min for 37 ℃ to final concentration.Split product adds 0.17 volume 5mol/L NaCl, puts 10min on ice, 4 ℃ of centrifugal 10min of 4000g, collect supernatant put 4 ℃ standby.Spread 27%, 33%, 39% Optiprep (with the PBS preparation that contains 0.8mol/L NaCl) in the Ultra-Clear centrifuge tube successively, the cracking supernatant that the room temperature lucifuge leaves standstill behind the 4h the centrifugal collection of 500 μ l carefully adds on the density gradient medium, 16 ℃ of centrifugal 3.5h of 215000g of Beckman Optima L-XP ultracentrifuge SW41 rotary head, collect each component between the about 1.15～1.18g/ml of centrifuge tube middle and lower part buoyant density respectively with acupuncture from the bottom to top, put in the 1.5ml silication centrifuge tube, the 1ml/ pipe is collected 5 pipes altogether, get 5 μ l and carry out the SDS-PAGE electrophoresis, change film.Immunoblotting detects HPV16L1 albumen.Get HPV16L1 virus-like particle (VLPs) the suspension phospho-wolframic acid negative staining of 20 μ l purifying, under transmission electron microscope, observe the form of virus-like particle.The result shows, the existence of the virus-like particle of the visible about 55nm of diameter under the Electronic Speculum, and the HPV16L1 albumen that proves the adenovirus mediated expression is assembling assembly virus-like particle (referring to Fig. 5) correctly.

Sequence table

＜110〉Ceng Yi

＜120〉contain the recombinant adenovirus of codon optimized type IIPV 16 L 1 gene

<130>

<160>1

<170>PatentIn?version?3.1

<210>1

<211>1518

<212>DNA

＜213〉human papillomavirus (HPV) 16 types

<220>

<221>CDS

<222>(1)..(1518)

<223>

<400>1

atg?agc?ctg?tgg?ctg?ccc?agc?gag?gcc?acc?gtg?tac?ctg?ccc?ccc?gtg 48

Met?Ser?Leu?Trp?Leu?Pro?Ser?Glu?Ala?Thr?Val?Tyr?Leu?Pro?Pro?Val

1 5 10 15

ccc?gtg?agc?aag?gtg?gtg?agc?acc?gac?gag?tac?gtg?gcc?cgg?acc?aac 96

Pro?Val?Ser?Lys?Val?Val?Ser?Thr?Asp?Glu?Tyr?Val?Ala?Arg?Thr?Asn

20 25 30

atc?tac?tac?cac?gcc?ggc?acc?agc?cgc?ctg?ctg?gcc?gtg?ggc?cac?ccc 144

Ile?Tyr?Tyr?His?Ala?Gly?Thr?Ser?Arg?Leu?Leu?Ala?Val?Gly?His?Pro

35 40 45

tac?ttc?ccc?atc?aag?aag?ccc?aac?aac?aac?aag?atc?ctg?gtg?ccc?aag 192

Tyr?Phe?Pro?Ile?Lys?Lys?Pro?Asn?Asn?Asn?Lys?Ile?Leu?Val?Pro?Lys

50 55 60

gtg?agc?ggc?ctg?cag?tac?cgg?gtg?ttc?cgg?atc?cac?ctg?ccc?gac?ccc 240

Val?Ser?Gly?Leu?Gln?Tyr?Arg?Val?Phe?Arg?Ile?His?Leu?Pro?Asp?Pro

65 70 75 80

aac?aag?ttc?ggc?ttc?ccc?gac?acc?agc?ttc?tac?aac?ccc?gac?acc?cag 288

Asn?Lys?Phe?Gly?Phe?Pro?Asp?Thr?Ser?Phe?Tyr?Asn?Pro?Asp?Thr?Gln

85 90 95

agg?ctg?gtg?tgg?gcc?tgc?gtg?ggc?gtg?gag?gtg?ggc?agg?ggc?cag?ccc 336

Arg?Leu?Val?Trp?Ala?Cys?Val?Gly?Val?Glu?Val?Gly?Arg?Gly?Gln?Pro

100 105 110

ctg?ggc?gtg?ggc?atc?agc?ggc?cac?ccc?ctg?ctg?aac?aag?ctg?gac?gac 384

Leu?Gly?Val?Gly?Ile?Ser?Gly?His?Pro?Leu?Leu?Asn?Lys?Leu?Asp?Asp

115 120 125

acc?gag?aac?gcc?agc?gcc?tac?gcc?gcc?aac?gcc?ggc?gtg?gac?aac?agg 432

Thr?Glu?Asn?Ala?Ser?Ala?Tyr?Ala?Ala?Asn?Ala?Gly?Val?Asp?Ash?Arg

130 135 140

gag?tgc?atc?agc?atg?gac?tac?aag?cag?acc?cag?ctg?tgc?ctg?atc?ggc 480

Glu?Cys?Ile?Ser?Met?Asp?Tyr?Lys?Gln?Thr?Gln?Leu?Cys?Leu?Ile?Gly

145 150 155 160

tgc?aag?ccc?ccc?atc?ggc?gag?cac?tgg?ggc?aag?ggc?agc?ccc?tgc?acc 528

Cys?Lys?Pro?Pro?Ile?Gly?Glu?His?Trp?Gly?Lys?Gly?Ser?Pro?Cys?Thr

165 170 175

aac?gtg?gcc?gtg?aac?ccc?ggc?gac?tgc?ccc?ccc?ctg?gag?ctg?atc?aac 576

Asn?Val?Ala?Val?Asn?Pro?Gly?Asp?Cys?Pro?Pro?Leu?Glu?Leu?Ile?Asn

180 185 190

acc?gtg?atc?cag?gac?ggc?gac?atg?gtg?gac?acc?ggc?ttc?ggc?gcc?atg 624

Thr?Val?Ile?Gln?Asp?Gly?Asp?Met?Val?Asp?Thr?Gly?Phe?Gly?Ala?Met

195 200 205

gac?ttc?acc?acc?ctg?cag?gcc?aac?aag?agc?gag?gtg?ccc?ctg?gac?atc 672

Asp?Phe?Thr?Thr?Leu?Gln?Ala?Asn?Lys?Ser?Glu?Val?Pro?Leu?Asp?Ile

210 215 220

tgc?acc?agc?atc?tgc?aag?tac?ccc?gac?tac?atc?aag?atg?gtg?agc?gag 720

Cys?Thr?Ser?Ile?Cys?Lys?Tyr?Pro?Asp?Tyr?Ile?Lys?Met?Val?Ser?Glu

225 230 235 240

ccc?tac?ggc?gac?agc?ctg?ttc?ttc?tac?ctg?agg?agg?gag?cag?atg?ttc 768

Pro?Tyr?Gly?Asp?Ser?Leu?Phe?Phe?Tyr?Leu?Arg?Arg?Glu?Gln?Met?Phe

245 250 255

gtg?agg?cac?ctg?ttc?aac?agg?gcc?ggc?gcc?gtg?ggc?gag?aac?gtg?ccc 816

Val?Arg?His?Leu?Phe?Asn?Arg?Ala?Gly?Ala?Val?Gly?Glu?Asn?Val?Pro

260 265 270

gac?gac?ctg?tac?atc?aag?ggc?agc?ggc?agc?acc?gcc?aac?ctg?gcc?agc 864

Asp?Asp?Leu?Tyr?Ile?Lys?Gly?Ser?Gly?Ser?Thr?Ala?Asn?Leu?Ala?Ser

275 280 285

agc?aac?tac?ttc?ccc?acc?ccc?agc?ggc?agc?atg?gtg?acc?agc?gac?gcc 912

Ser?Asn?Tyr?Phe?Pro?Thr?Pro?Ser?Gly?Ser?Met?Val?Thr?Ser?Asp?Ala

290 295 300

cag?atc?ttc?aac?aag?ccc?tac?tgg?ctg?cag?agg?gcc?cag?ggc?cac?aac 960

Gln?Ile?Phe?Asn?Lys?Pro?Tyr?Trp?Leu?Gln?Arg?Ala?Gln?Gly?His?Asn

305 310 315 320

aac?ggc?atc?tgc?tgg?ggc?aac?cag?ctg?ttc?gtg?acc?gtg?gtg?gac?acc 1008

Ash?Gly?Ile?Cys?Trp?Gly?Asn?Gln?Leu?Phe?Val?Thr?Val?Val?Asp?Thr

325 330 335

acc?agg?agc?acc?aac?atg?agc?ctg?tgc?gcc?gcc?atc?agc?acc?agc?gag 1056

Thr?Arg?Ser?Thr?Asn?Met?Ser?Leu?Cys?Ala?Ala?Ile?Ser?Thr?Ser?Glu

340 345 350

acc?acc?tac?aag?aac?acc?aac?ttc?aag?gag?tac?ctg?agg?cac?ggc?gag 1104

Thr?Thr?Tyr?Lys?Asn?Thr?Asn?Phe?Lys?Glu?Tyr?Leu?Arg?His?Gly?Glu

355 360 365

gag?tac?gac?ctg?cag?ttc?atc?ttc?cag?ctg?tgc?aag?atc?acc?ctg?acc 1152

Glu?Tyr?Asp?Leu?Gln?Phe?Ile?Phe?Gln?Leu?Cys?Lys?Ile?Thr?Leu?Thr

370 375 380

gcc?gac?gtg?atg?acc?tac?atc?cac?agc?atg?aac?agc?acc?atc?ctg?gag 1200

Ala?Asp?Val?Met?Thr?Tyr?Ile?His?Ser?Met?Asn?Ser?Thr?Ile?Leu?Glu

385 390 395 400

gac?tgg?aac?ttc?ggc?ctg?cag?ccc?ccc?ccc?ggc?ggc?acc?ctg?gag?gac 1248

Asp?Trp?Asn?Phe?Gly?Leu?Gln?Pro?Pro?Pro?Gly?Gly?Thr?Leu?Glu?Asp

405 410 415

acc?tac?agg?ttc?gtg?acc?agc?cag?gcc?atc?gcc?tgc?cag?aag?cac?acc 1296

Thr?Tyr?Arg?Phe?Val?Thr?Ser?Gln?Ala?Ile?Ala?Cys?Gln?Lys?His?Thr

420 425 430

ccc?ccc?gcc?ccc?aag?gag?gac?ccc?ctg?aag?aag?tac?acc?ttc?tgg?gag 1344

Pro?Pro?Ala?Pro?Lys?Glu?Asp?Pro?Leu?Lys?Lys?Tyr?Thr?Phe?Trp?Glu

435 440 445

gtg?aac?ctg?aag?gag?aag?ttc?agc?gcc?gac?ctg?gac?cag?ttc?ccc?ctg 1392

Val?Asn?Leu?Lys?Glu?Lys?Phe?Ser?Ala?Asp?Leu?Asp?Gln?Phe?Pro?Leu

450 455 460

ggc?agg?aag?ttc?ctg?ctg?cag?gcc?ggc?ctg?aag?gcc?aag?ccc?aag?ttc 1440

Gly?Arg?Lys?Phe?Leu?Leu?Gln?Ala?Gly?Leu?Lys?Ala?Lys?Pro?Lys?Phe

465 470 475 480

acc?ctg?ggc?aag?agg?aag?gcc?acc?ccc?acc?acc?agc?agc?acc?agc?acc 1488

Thr?Leu?Gly?Lys?Arg?Lys?Ala?Thr?Pro?Thr?Thr?Ser?Ser?Thr?Ser?Thr

485 490 495

acc?gcc?aag?agg?aag?aag?agg?aag?ctg?tga 1518

Thr?Ala?Lys?Arg?Lys?Lys?Arg?Lys?Leu

500 505

Claims

1. the gene of the main capsid protein L 1 of coding papilloma virus 16 types (HPV16) of a codon optimized type, this gene has the nucleotide sequence shown in the SEQ ID NO:1.

2. the described gene of claim 1, this gene is under the condition that does not change the main capsid protein L 1 aminoacid sequence of HPV16, the codon that uses with the Mammals high frequency replaces that the codon of HPV16L1 gene order obtains.

3. duplicate deficit type recombinant adenovirus, this virus carries the described gene of claim 1.

4. method for preparing the described duplicate deficit type recombinant adenovirus of claim 3, this method comprises:

(1) codon that uses by usefulness Mammals high frequency replaces the codon of HPV16L1 gene order, obtains codon optimized type IIPV 16 L 1 gene;

(2) codon optimized type IIPV 16 L 1 gene that carries that step (1) is obtained is cloned into adenovirus shuttle plasmid, obtains carrying the recombinant adenovirus shuttle plasmid of codon optimized type IIPV 16 L 1 gene sequence;

5. according to the method for claim 4, wherein said adenovirus shuttle plasmid is plasmid PDC316.

6. according to the method for claim 4, wherein said recombinant adenovirus skeleton plasmid is plasmid pBHGlox Δ E1,3Cre.

7. according to the method for claim 4, wherein said adenovirus packaging cell is 293 cells.

8. the described recombinant adenovirus of claim 3 is used for preventing and/or treating the purposes of the vaccine and the medicine of cervical cancer in preparation.