CN106854654A - 表达羊种布氏菌L7/L12基因的rBCG及其构建方法与应用 - Google Patents
表达羊种布氏菌L7/L12基因的rBCG及其构建方法与应用 Download PDFInfo
- Publication number
- CN106854654A CN106854654A CN201710084346.8A CN201710084346A CN106854654A CN 106854654 A CN106854654 A CN 106854654A CN 201710084346 A CN201710084346 A CN 201710084346A CN 106854654 A CN106854654 A CN 106854654A
- Authority
- CN
- China
- Prior art keywords
- gene
- brucella
- rbcg
- bcg
- expression vector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 101000575173 Homo sapiens 60S ribosomal protein L12 Proteins 0.000 title claims abstract description 48
- 101000659995 Homo sapiens Ribosomal L1 domain-containing protein 1 Proteins 0.000 title claims abstract description 48
- 241000589562 Brucella Species 0.000 title claims abstract description 36
- 238000010276 construction Methods 0.000 title claims description 11
- 241001494479 Pecora Species 0.000 title description 4
- 239000013604 expression vector Substances 0.000 claims abstract description 25
- 229960005486 vaccine Drugs 0.000 claims abstract description 21
- 206010006500 Brucellosis Diseases 0.000 claims abstract description 19
- 230000014509 gene expression Effects 0.000 claims abstract description 16
- 241000349731 Afzelia bipindensis Species 0.000 claims abstract description 15
- 238000005457 optimization Methods 0.000 claims abstract description 11
- 108020004705 Codon Proteins 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 108090000623 proteins and genes Proteins 0.000 claims description 15
- 238000003259 recombinant expression Methods 0.000 claims description 10
- 239000002773 nucleotide Substances 0.000 claims description 5
- 125000003729 nucleotide group Chemical group 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 241000894006 Bacteria Species 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 3
- 241000588722 Escherichia Species 0.000 claims description 2
- 230000003248 secreting effect Effects 0.000 claims description 2
- 230000001131 transforming effect Effects 0.000 claims description 2
- 239000013598 vector Substances 0.000 claims description 2
- 208000015181 infectious disease Diseases 0.000 abstract description 6
- 230000000240 adjuvant effect Effects 0.000 abstract description 4
- 230000028993 immune response Effects 0.000 abstract description 4
- 102000008837 Ribosomal protein L7/L12 Human genes 0.000 abstract description 3
- 108050000743 Ribosomal protein L7/L12 Proteins 0.000 abstract description 3
- 210000001744 T-lymphocyte Anatomy 0.000 abstract description 3
- 239000000427 antigen Substances 0.000 abstract description 3
- 102000036639 antigens Human genes 0.000 abstract description 3
- 108091007433 antigens Proteins 0.000 abstract description 3
- 201000008827 tuberculosis Diseases 0.000 abstract description 3
- 230000003834 intracellular effect Effects 0.000 abstract 1
- 230000024241 parasitism Effects 0.000 abstract 1
- 229960000190 bacillus calmette–guérin vaccine Drugs 0.000 description 30
- 241001467552 Mycobacterium bovis BCG Species 0.000 description 29
- 102100025643 60S ribosomal protein L12 Human genes 0.000 description 6
- 241001465754 Metazoa Species 0.000 description 4
- 241000699670 Mus sp. Species 0.000 description 4
- 238000004520 electroporation Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 244000000056 intracellular parasite Species 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 241000283690 Bos taurus Species 0.000 description 2
- 108090000695 Cytokines Proteins 0.000 description 2
- 102000004127 Cytokines Human genes 0.000 description 2
- 108020004414 DNA Proteins 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229960001533 brucellosis vaccines Drugs 0.000 description 2
- 238000001962 electrophoresis Methods 0.000 description 2
- 230000001900 immune effect Effects 0.000 description 2
- 230000003053 immunization Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010369 molecular cloning Methods 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000002415 sodium dodecyl sulfate polyacrylamide gel electrophoresis Methods 0.000 description 2
- 241000894007 species Species 0.000 description 2
- FWMNVWWHGCHHJJ-SKKKGAJSSA-N 4-amino-1-[(2r)-6-amino-2-[[(2r)-2-[[(2r)-2-[[(2r)-2-amino-3-phenylpropanoyl]amino]-3-phenylpropanoyl]amino]-4-methylpentanoyl]amino]hexanoyl]piperidine-4-carboxylic acid Chemical compound C([C@H](C(=O)N[C@H](CC(C)C)C(=O)N[C@H](CCCCN)C(=O)N1CCC(N)(CC1)C(O)=O)NC(=O)[C@H](N)CC=1C=CC=CC=1)C1=CC=CC=C1 FWMNVWWHGCHHJJ-SKKKGAJSSA-N 0.000 description 1
- 206010000234 Abortion spontaneous Diseases 0.000 description 1
- 241001148106 Brucella melitensis Species 0.000 description 1
- 241000596757 Brucella melitensis M5 Species 0.000 description 1
- 229910017518 Cu Zn Inorganic materials 0.000 description 1
- 229910017752 Cu-Zn Inorganic materials 0.000 description 1
- 229910017943 Cu—Zn Inorganic materials 0.000 description 1
- 108010041986 DNA Vaccines Proteins 0.000 description 1
- 229940021995 DNA vaccine Drugs 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 102100037850 Interferon gamma Human genes 0.000 description 1
- 108010074328 Interferon-gamma Proteins 0.000 description 1
- 108010002350 Interleukin-2 Proteins 0.000 description 1
- 241000124008 Mammalia Species 0.000 description 1
- 241000699666 Mus <mouse, genus> Species 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 108091028043 Nucleic acid sequence Proteins 0.000 description 1
- 241000009328 Perro Species 0.000 description 1
- 241000282887 Suidae Species 0.000 description 1
- 241000282898 Sus scrofa Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 208000035472 Zoonoses Diseases 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 229940038698 brucella melitensis Drugs 0.000 description 1
- 238000013377 clone selection method Methods 0.000 description 1
- 210000000795 conjunctiva Anatomy 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 239000012228 culture supernatant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000002219 extraembryonic membrane Anatomy 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000002649 immunization Methods 0.000 description 1
- 230000002458 infectious effect Effects 0.000 description 1
- 208000000509 infertility Diseases 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 231100000535 infertility Toxicity 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 229930027917 kanamycin Natural products 0.000 description 1
- SBUJHOSQTJFQJX-NOAMYHISSA-N kanamycin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N SBUJHOSQTJFQJX-NOAMYHISSA-N 0.000 description 1
- 229960000318 kanamycin Drugs 0.000 description 1
- 229930182823 kanamycin A Natural products 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 208000015994 miscarriage Diseases 0.000 description 1
- 150000007523 nucleic acids Chemical group 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 239000013612 plasmid Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000012474 protein marker Substances 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 208000000995 spontaneous abortion Diseases 0.000 description 1
- 229940031626 subunit vaccine Drugs 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002255 vaccination Methods 0.000 description 1
- 239000012646 vaccine adjuvant Substances 0.000 description 1
- 229940124931 vaccine adjuvant Drugs 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/74—Vectors or expression systems specially adapted for prokaryotic hosts other than E. coli, e.g. Lactobacillus, Micromonospora
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/02—Bacterial antigens
- A61K39/098—Brucella
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/195—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria
- C07K14/23—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria from Brucella (G)
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/51—Medicinal preparations containing antigens or antibodies comprising whole cells, viruses or DNA/RNA
- A61K2039/52—Bacterial cells; Fungal cells; Protozoal cells
- A61K2039/523—Bacterial cells; Fungal cells; Protozoal cells expressing foreign proteins
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2800/00—Nucleic acids vectors
- C12N2800/10—Plasmid DNA
- C12N2800/101—Plasmid DNA for bacteria
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2800/00—Nucleic acids vectors
- C12N2800/22—Vectors comprising a coding region that has been codon optimised for expression in a respective host
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Genetics & Genomics (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Biotechnology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Zoology (AREA)
- Molecular Biology (AREA)
- General Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Medicinal Chemistry (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Physics & Mathematics (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Plant Pathology (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Pharmacology & Pharmacy (AREA)
- Mycology (AREA)
- Immunology (AREA)
- Gastroenterology & Hepatology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
本发明提供一种表达羊种布氏菌L7/L12基因的rBCG,其是将携带有经过密码子优化的羊种布氏菌L7/L12基因的表达载体转入BCG中构建得到的。布氏菌核糖体蛋白L7/L12是一种T细胞抗原。卡介苗BCG是迄今唯一商品化的预防结核的疫苗。研究证实BCG不仅具有显著的免疫佐剂效应,而且是一种性能良好、安全性很高的外源基因表达宿主。利用BCG表达经过密码子优化的布氏菌L7/L12基因既可以提高L7/L12基因的表达量,构建得到的rBCG疫苗又能够模拟布氏菌胞内感染与寄生的特性,更有效地诱导机体产生免疫应答,还能发挥BCG作为表达宿主的高安全性、制备简单、成本低廉等优点以及BCG本身所具有的免疫佐剂效应,有望成为新型的布鲁氏菌病疫苗。
Description
技术领域
本发明涉及基因工程及疫苗制备技术领域,具体地说,涉及一种表达羊种布氏菌L7/L12基因的rBCG及其构建方法与应用。
背景技术
布鲁氏菌病(Brucellosis)简称布病,是由布氏菌感染引起的一种人畜共患传染病。布氏菌是一种兼性胞内寄生菌,对人和哺乳动物具有高度感染性和致病性。该菌属主要包括羊种、牛种、猪种和犬种等6个生物种,中国流行的主要是前3种,其中以羊种布氏菌感染最常见。布病的传播方式为动物—动物和动物—人群。羊、牛、猪等家畜最易感染,动物感染后可导致生殖器官和胎膜发炎、流产、不育和各种组织病变,极大地增加了向人群传播的几率。人群对布氏菌普遍易感,一般羊种布氏菌对人危害最大。人与病畜及受污染的畜产品接触后,布氏菌可通过消化道、呼吸道、泌尿生殖道、皮肤及眼结膜等途径感染。
近20年来,我国布病疫情日趋严重并由迅速蔓延的趋势。国内外现行的布病疫苗均为减毒活疫苗,这些疫苗普遍存在毒性较大、保护周期较短、无法区分自然感染和疫苗接种等诸多不足,无法满足布病防控的现实需求。因此,新型布病疫苗的研究与开发对于控制布病疫情的蔓延具有重要意义,也是国内外布病研究的热点。现已证实的布氏菌T细胞抗原包括PBP39、L7/L12和Cu-Zn SOD等,这些蛋白及其编码基因已用于布病亚单位疫苗和DNA疫苗的实验研究。
卡介苗(Bacillus Calmette-Guérin,BCG)是目前唯一用于预防结核病的疫苗,在世界卫生组织全球性扩展免疫计划中广泛使用。BCG具有数十年大量安全使用记录、热稳定性好、生产成本低、显著的佐剂效应以及经口服可诱导有效粘膜免疫等特点,同时BCG也是一种极具吸引力的活疫苗载体,利用BCG作为新型疫苗的表达宿主前景诱人。近年来,以BCG为载体的重组BCG疫苗研发日益受到国内外研究学者的关注和重视,针对的病原体涉及细菌、病毒、寄生虫及肿瘤等,具有广阔的发展前景。
目前国内外尚未见有关构建携带羊种布氏菌M5株核糖体蛋白L7/L12编码基因(L7/L12基因)重组BCG的报道。
发明内容
本发明的目的是提供一种表达羊种布氏菌L7/L12基因的rBCG及其构建方法。
本发明的另一目的是提供所述rBCG在制备布鲁氏菌病疫苗中的应用。
为了实现本发明目的,本发明首先提供一种表达载体,所述表达载体携带有经过密码子优化的羊种布氏菌L7/L12基因的表达盒,且出发载体为大肠杆菌-分支杆菌穿梭表达载体pMV361。
本发明中,羊种布氏菌L7/L12基因来自于羊种布氏菌(Brucella melitensis)M5菌株(CMCC55009)且经过密码子优化,其核苷酸序列如SEQ ID NO:1所示。
优选地,所述表达载体的核苷酸序列如SEQ ID NO:2所示。
本发明还提供一种表达羊种布氏菌L7/L12基因的rBCG,其是将携带有羊种布氏菌L7/L12基因表达盒的表达载体转入BCG中,筛选获得可分泌表达羊种布氏菌L7/L12基因的rBCG。
本发明表达羊种布氏菌L7/L12基因的rBCG,由以下方法构建获得:
1)根据已公开的羊种布氏菌M5株L7/L12基因序列,采用Jcat软件进行密码子优化后,人工合成全序列优化后的L7/L12基因作为目的基因;
2)携带有优化后的羊种布氏菌L7/L12基因的重组表达载体的构建:将上述目的基因通过MunⅠ和PvuⅡ两个酶切位点插入穿梭表达载体pMV361;
3)宿主菌转化:将步骤2)构建得到的重组表达载体转化至BCG中,筛选阳性克隆,即得可分泌表达羊种布氏菌L7/L12基因的rBCG。
本发明还提供所述rBCG在制备布鲁氏菌病疫苗中的应用。
本发明还提供由所述rBCG制备的布鲁氏菌病疫苗。
可将本发明所述的rBCG直接作为布鲁氏菌病疫苗使用,或者辅以免疫佐剂,制成布鲁氏菌病疫苗。
本发明具有以下优点:
(一)布氏菌核糖体蛋白L7/L12(相对分子量大小约为15kDa,其编码基因为L7/L12基因)是一种T细胞抗原,能刺激机体产生有效的免疫应答。
(二)BCG(卡介苗)是迄今唯一商品化的预防结核的疫苗,作为外源基因的表达宿主制备的疫苗具有安全性高、热稳定性好、制备简单、价格低廉等优点。
(三)BCG本身具有显著的免疫佐剂效应,因此rBCG疫苗无需添加疫苗佐剂,进一步节约了成本。
(四)BCG也是一种兼性胞内寄生菌,rBCG可以模拟布氏菌感染和胞内寄生的特征,更有效地诱导机体产生免疫应答。
(五)L7/L12基因经过密码子优化后,能够提高外源基因在BCG的表达量(表达量可提高一倍以上),解决了因外源基因表达量不高所致的重组BCG免疫效果不佳的难题。
(六)动物实验结果表明,构建的rBCG能够诱导小鼠产生明显的免疫应答。
(七)利用羊种布氏菌L7/L12基因制备重组BCG疫苗具有重要的研究意义和潜在的应用价值。
附图说明
图1为本发明实施例2中经优化和未经优化的L7/L12基因构建的重组BCG中目的蛋白的SDS-PAGE电泳结果;其中,1:携带经优化后的L7/L12基因重组BCG;2:携带未经优化的L7/L12基因重组BCG;3:携带经优化后的L7/L12基因重组BCG(温度诱导);4:未转染的BCG;M:蛋白Marker。
图2为本发明实施例3中构建的不同重组BCG对Balb/c小鼠的免疫效果比较。
具体实施方式
以下实施例用于说明本发明,但不用来限制本发明的范围。若未特别指明,实施例均按照常规实验条件,如Sambrook等分子克隆实验手册(Sambrook J&Russell DW,Molecular Cloning:a Laboratory Manual,2001),或按照制造厂商说明书建议的条件。
实施例1携带有羊种布氏菌L7/L12基因的重组表达载体的构建
包括以下步骤:
1、根据已公开的羊种布氏菌L7/L12基因的序列(GenBank:EF173477.1),采用Jcat软件进行密码子优化后,人工合成全序列优化后的L7/L12基因作为目的基因(核苷酸序列如SEQ ID NO:1所示)。
2、携带有M5菌株L7/L12基因的重组表达载体的构建:
将上述目的基因通过MunⅠ和PvuⅡ两个酶切位点插入穿梭表达载体pMV361。
3、插入正确的重组表达载体的验证:
通过核酸序列测定,证实携带有优化后的羊种布氏菌L7/L12基因的重组表达载体构建成功。
实施例2表达羊种布氏菌L7/L12基因的rBCG的构建
1、以BCG作为宿主菌,将实施例1中构建的重组表达载体(全序列如SEQ ID NO:2所示)转化至BCG中。
采用电转化方法进行转化,实验条件为:2500V、25μF、1000Ω,电转时间5ms,0.1cm电击杯。电转化反应体系为:质粒4μl(浓度为0.51μg/μl),感受态BCG菌液100μl(浓度约为1×1010CFU/ml)。
2、阳性克隆的筛选
电转后,接种到含有50μg/ml卡那霉素的培养基(斜面)上进行阳性克隆筛选。
3、目的基因表达量的检测
将筛选得到的阳性克隆(即重组BCG)接种到液体培养基中进行扩增培养,收集培养上清,SDS-PAGE电泳检测目的基因的表达量。经优化后的L7/L12基因表达升高,尤其是温度诱导(60℃诱导4小时)后,表达量显著提高。结果见图1。
实施例3布鲁氏菌病疫苗的效果实验
将重组BCG免疫6-8周龄雌性Balb/c小鼠,皮下注射,注射剂量为4×108CFU/只,免疫4周后,检测各组小鼠血清中Th1/Th2型细胞因子的表达情况。实验结果表明,与携带未经优化L7/L12基因的重组BCG(rBCG-L7/L12(wild))和未经转化的BCG相比,携带经过密码子优化L7/L12基因的重组BCG(rBCG-L7/L12)能够有效地诱导IL-2和IFN-γ等Th1型细胞因子的产生。(图2)
虽然,上文中已经用一般性说明及具体实施方案对本发明作了详尽的描述,但在本发明基础上,可以对之作一些修改或改进,这对本领域技术人员而言是显而易见的。因此,在不偏离本发明精神的基础上所做的这些修改或改进,均属于本发明要求保护的范围。
序列表
<110> 内蒙古医科大学
<120> 表达羊种布氏菌L7/L12基因的rBCG及其构建方法与应用
<130> KHP161118995.5
<160> 2
<170> PatentIn version 3.3
<210> 1
<211> 375
<212> DNA
<213> 人工序列
<400> 1
atggccgacc tggccaagat cgtggaggac ctgtcggccc tgaccgtgct ggaggccgcc 60
gagctgtcga agctgctgga ggagaagtgg ggcgtgtcgg ccgccgcccc ggtggccgtg 120
gccgccgccg gcggcgccgc cccggccgcc gccgccgagg agaagaccga gttcgacgtg 180
gtgctggccg acggcggcgc caacaagatc aacgtgatca aggaggtgcg cgccctgacc 240
ggcctgggcc tgaaggaggc caaggacctg gtggagggcg ccccgaaggc cgtgaaggag 300
ggcgcctcga aggacgaggc cgagaagatc aaggcccagc tggaggccgc cggcgccaag 360
gtggagctga agtaa 375
<210> 2
<211> 4819
<212> DNA
<213> 重组表达载体
<400> 2
gctagcaaca aagcgacgtt gtgtctcaaa atctctgatg ttacattgca caagataaaa 60
atatatcatc atgaacaata aaactgtctg cttacataaa cagtaataca aggggtgtta 120
tgagccatat tcaacgggaa acgtcttgct cgaggccgcg attaaattcc aacatggatg 180
ctgatttata tgggtataaa tgggctcgcg ataatgtcgg gcaatcaggt gcgacaatct 240
atcgcttgta tgggaagccc catgcgccag agttgtttct gaaacatggc aaaggtagcg 300
ttgccaatga tgttacagat gagatggtca gactaaactg gctgacggaa tttatgcctc 360
ttccgaccat caagcatttt atccgtactc ctgatgatgc atggttactc accactgcga 420
tccccgggaa aacagcattc caggtattag aagaatatcc tgattcaggt gaaaatattg 480
ttgatgcgct ggcagtgttc ctgcgccggt tgcattcgat tcctgtttgt aattgtcctt 540
ttaacagcga tcgcgtattt cgtctcgctc aggcgcaatc acgaatgaat aacggtttgg 600
ttgatgcgag tgattttgat gacgagcgta atggctggcc tgttgaacaa gtctggaaag 660
aaatgcataa tcttttgcca ttctcaccgg attcagtcgt cactcatggt gatttctcac 720
ttgataacct tatttttgac gaggggaaat taataggttg tattgatgtt ggacgagtcg 780
gaatcgcaga ccgataccag gatcttgcca tcctatggaa ctgcctcggt gagttttctc 840
cttcattaca gaaacggctt tttcaaaaat atggtattga taatcctgat atgaataaat 900
tgcagtttca tttgatgctc gatgagtttt tctaatcaga attggttaat tggttgtaac 960
actggcagag cattacgctg acttgacggg acggcggctt tgttgaataa atcgaacttt 1020
tgctgagttg aaggatcaga tcacgcatct tcccgacaac gcagaccgtt ccgtggcaaa 1080
gcaaaagttc aaaatcacca actggtccac ctacaacaaa gctctcatca accgtggctc 1140
cctcactttc tggctggatg atggggcgat tcaggcctgg tatgagtcag caacaccttc 1200
ttcacgaggc agacctcact agttccactg agcgtcagac cccgtagaaa agatcaaagg 1260
atcttcttga gatccttttt ttctgcgcgt aatctgctgc ttgcaaacaa aaaaaccacc 1320
gctaccagcg gtggtttgtt tgccggatca agagctacca actctttttc cgaaggtaac 1380
tggcttcagc agagcgcaga taccaaatac tgtccttcta gtgtagccgt agttaggcca 1440
ccacttcaag aactctgtag caccgcctac atacctcgct ctgctaatcc tgttaccagt 1500
ggctgctgcc agtggcgata agtcgtgtct taccgggttg gactcaagac gatagttacc 1560
ggataaggcg cagcggtcgg gctgaacggg gggttcgtgc acacagccca gcttggagcg 1620
aacgacctac accgaactga gatacctaca gcgtgagcat tgagaaagcg ccacgcttcc 1680
cgaagggaga aaggcggaca ggtatccggt aagcggcagg gtcggaacag gagagcgcac 1740
gagggagctt ccagggggaa acgcctggta tctttatagt cctgtcgggt ttcgccacct 1800
ctgacttgag cgtcgatttt tgtgatgctc gtcagggggg cggagcctat ggaaaaacgc 1860
cagcaacgcg gcctttttac ggttcctggc cttttgctgg ccttttgctc acatgttctt 1920
tcctgcgtta tcccctgatt ctgtggataa ccgtattacc gcctttgagt gagctgatac 1980
cgctcgccgc agccgaacga ccgagcgcaa cgcgtgcggc cgcggtaccc ggggatcctc 2040
tagagtcgac caccaagggc accatctctg cttgggccac cccgttggcc gcagccagct 2100
cgctgagagc cgtgaacgac agggcgaacg ccagcccgcc gacggcgagg gttccgaccg 2160
ctgcaactcc cggtgcaacc ttgtcccggt ctattctctt cactgcacca gctccaatct 2220
ggtgtgaatg cccctcgtct gttcgcgcag gcggggggct ctattcgttt gtcagcatcg 2280
aaagtagcca gatcagggat gcgttgcaac cgcgtatgcc caggtcagaa gagtcgcaca 2340
agagttgcag acccctggaa agaaaaatgg ccagagggcg aaaacaccct ctgaccagcg 2400
gagcgggcga cgggaatcga acccgcgtag ctagtttgga agaatgggtg tctgccgacc 2460
acatatgggc cggtcaagat aggtttttac cccctctcgg ctgcatcctc taagtggaaa 2520
gaaattgcag gtcgtagaag cgcgttgaag cctgagagtt gcacaggagt tgcaacccgg 2580
tagccttgtt cacgacgaga ggagacctag ttggcacgtc gcggatgggg atcgctgaag 2640
actcagcgca gcgggaggat ccaagcctca tacgtcaacc cgcaggacgg tgtgaggtac 2700
tacgcgctgc agacctacga caacaagatg gacgccgaag cctggctcgc gggcgagaag 2760
cggctcatcg agatggagac ctggacccct ccacaggacc gggcgaagaa ggcagccgcc 2820
agcgccatca cgctggagga gtacacccgg aagtggctcg tggagcgcga cctcgcagac 2880
ggcaccaggg atctgtacag cgggcacgcg gagcgccgca tctacccggt gctaggtgaa 2940
gtggcggtca cagagatgac gccagctctg gtgcgtgcgt ggtgggccgg gatgggtagg 3000
aagcacccga ctgcccgccg gcatgcctac aacgtcctcc gggcggtgat gaacacagcg 3060
gtcgaggaca agctgatcgc agagaacccg tgccggatcg agcagaaggc agccgatgag 3120
cgcgacgtag aggcgctgac gcctgaggag ctggacatcg tcgccgctga gatcttcgag 3180
cactaccgga tcgcggcata catcctggcg tggacgagcc tccggttcgg agagctgatc 3240
gagcttcgcc gcaaggacat cgtggacgac ggcatgacga tgaagctccg ggtgcgccgt 3300
ggcgcttccc gcgtggggaa caagatcgtc gttggcaacg ccaagaccgt ccggtcgaag 3360
cgtcctgtga cggttccgcc tcacgtcgcg gagatgatcc gagcgcacat gaaggaccgt 3420
acgaagatga acaagggccc cgaggcattc ctggtgacca cgacgcaggg caaccggctg 3480
tcgaagtccg cgttcaccaa gtcgctgaag cgtggctacg ccaagatcgg tcggccggaa 3540
ctccgcatcc acgacctccg cgctgtcggc gctacgttcg ccgctcaggc aggtgcgacg 3600
accaaggagc tgatggcccg tctcggtcac acgactccta ggatggcgat gaagtaccag 3660
atggcgtctg aggcccgcga cgaggctatc gctgaggcga tgtccaagct ggccaagacc 3720
tcctgaaacg caaaaagccc ccctcccaag gacactgagt cctaaagagg ggggtttctt 3780
gtcagtacgc gaagaaccac gcctggccgc gagcgccagc accgccgctc tgtgcggaga 3840
cctgggcacc agccccgccg ccgccaggag cattgccgtt cccgccagaa atctagacgg 3900
tgaccacaac gacgcgcccg ctttgatcgg ggacgtctgc ggccgaccat ttacgggtct 3960
tgttgtcgtt ggcggtcatg ggccgaacat actcacccgg atcggagggc cgaggacaag 4020
gtcgaacgag gggcatgacc cggtgcgggg cttcttgcac tcggcatagg cgagtgctaa 4080
gaataacgtt ggcactcgcg accggtgagt cgtaggtcgg gacggtgagg ccaggcccgt 4140
cgtcgcagcg agtggcagcg aggacaactt gagccgtccg tcgcgggcac tgcgcccggc 4200
cagcgtaagt agcggggttg ccgtcacccg gtgacccccg gtttcatccc cgatccggag 4260
gaatcacttc gcaatggcca agacaattgg ccacatggcc gacctggcca agatcgtgga 4320
ggacctgtcg gccctgaccg tgctggaggc cgccgagctg tcgaagctgc tggaggagaa 4380
gtggggcgtg tcggccgccg ccccggtggc cgtggccgcc gccggcggcg ccgccccggc 4440
cgccgccgcc gaggagaaga ccgagttcga cgtggtgctg gccgacggcg gcgccaacaa 4500
gatcaacgtg atcaaggagg tgcgcgccct gaccggcctg ggcctgaagg aggccaagga 4560
cctggtggag ggcgccccga aggccgtgaa ggagggcgcc tcgaaggacg aggccgagaa 4620
gatcaaggcc cagctggagg ccgccggcgc caaggtggag ctgaagtaac agctgcagaa 4680
ttcgaagctt atcgatgtcg acgtagttaa ctagcgtacg atcgactgcc aggcatcaaa 4740
taaaacgaaa ggctcagtcg aaagactggg cctttcgttt tatctgttgt ttgtccggcc 4800
atcatggccg cggtgatca 4819
Claims (7)
1.一种表达载体,其特征在于,所述表达载体携带有经过密码子优化的羊种布氏菌L7/L12基因的表达盒,且出发载体为大肠杆菌-分支杆菌穿梭表达载体pMV361。
2.根据权利要求1所述的表达载体,其特征在于,所述L7/L12基因来自于羊种布氏菌M5菌株,优化后羊种布氏菌L7/L12基因的核苷酸序列如SEQ ID NO:1所示。
3.根据权利要求2所述的表达载体,其特征在于,所述表达载体的核苷酸序列如SEQ IDNO:2所示。
4.表达羊种布氏菌L7/L12基因的rBCG,其特征在于,其是将权利要求1-3任一项所述的表达载体转入BCG中,筛选获得可分泌表达羊种布氏菌L7/L12基因的rBCG。
5.权利要求4所述rBCG的构建方法,其特征在于,包括以下步骤:
1)根据已公开的羊种布氏菌M5株L7/L12基因序列,采用Jcat软件进行密码子优化后,人工合成全序列优化后的L7/L12基因作为目的基因;
2)携带有优化后的羊种布氏菌L7/L12基因的重组表达载体的构建:将上述目的基因通过MunⅠ和PvuⅡ两个酶切位点插入穿梭表达载体pMV361;
3)宿主菌转化:将步骤2)构建得到的重组表达载体转化至BCG中,筛选阳性克隆,即得可分泌表达羊种布氏菌L7/L12基因的rBCG。
6.权利要求4所述rBCG在制备布鲁氏菌病疫苗中的应用。
7.由权利要求4所述rBCG制备的布鲁氏菌病疫苗。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084346.8A CN106854654B (zh) | 2017-02-16 | 2017-02-16 | 表达羊种布氏菌L7/L12基因的rBCG及其构建方法与应用 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084346.8A CN106854654B (zh) | 2017-02-16 | 2017-02-16 | 表达羊种布氏菌L7/L12基因的rBCG及其构建方法与应用 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106854654A true CN106854654A (zh) | 2017-06-16 |
| CN106854654B CN106854654B (zh) | 2020-06-23 |
Family
ID=59125502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710084346.8A Active CN106854654B (zh) | 2017-02-16 | 2017-02-16 | 表达羊种布氏菌L7/L12基因的rBCG及其构建方法与应用 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106854654B (zh) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004201605A (ja) * | 2002-12-26 | 2004-07-22 | Asahi Kasei Corp | レジオネラ属菌リボソームl7/l12タンパク質をコードするdna |
| CN101020064A (zh) * | 2007-03-27 | 2007-08-22 | 北京大学 | 一种布鲁氏杆菌核酸疫苗 |
| US20100226942A1 (en) * | 2008-10-30 | 2010-09-09 | Schurig Gerhardt G | Producing an immune response for reducing the risk of developing brucellosis |
| CN102703505A (zh) * | 2012-05-18 | 2012-10-03 | 中国农业科学院兰州兽医研究所 | 共表达布鲁氏菌重组腺病毒及其制备方法和用途 |
| CN104152480A (zh) * | 2014-08-01 | 2014-11-19 | 中国农业科学院兰州兽医研究所 | 布鲁氏菌L7/L12、Omp31、Rsα、sodC免疫蛋白共表达载体构建和表达方法 |
-
2017
- 2017-02-16 CN CN201710084346.8A patent/CN106854654B/zh active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004201605A (ja) * | 2002-12-26 | 2004-07-22 | Asahi Kasei Corp | レジオネラ属菌リボソームl7/l12タンパク質をコードするdna |
| CN101020064A (zh) * | 2007-03-27 | 2007-08-22 | 北京大学 | 一种布鲁氏杆菌核酸疫苗 |
| US20100226942A1 (en) * | 2008-10-30 | 2010-09-09 | Schurig Gerhardt G | Producing an immune response for reducing the risk of developing brucellosis |
| WO2011049590A1 (en) * | 2009-10-21 | 2011-04-28 | Schurig Gerhardt G | Producing an immune response for reducing the risk of developing brucellosis |
| CN102703505A (zh) * | 2012-05-18 | 2012-10-03 | 中国农业科学院兰州兽医研究所 | 共表达布鲁氏菌重组腺病毒及其制备方法和用途 |
| CN104152480A (zh) * | 2014-08-01 | 2014-11-19 | 中国农业科学院兰州兽医研究所 | 布鲁氏菌L7/L12、Omp31、Rsα、sodC免疫蛋白共表达载体构建和表达方法 |
Non-Patent Citations (6)
| Title |
|---|
| KAISSAR TABYNOV ET AL.: ""Influenza viral vectors expressing the Brucella OMP16 or L7/L12 proteins as vaccines against B.abortus infection"", 《VIROLOGY JOURNAL》 * |
| KAISSAR TABYNOV ET AL.: ""Novel vector vaccine against Brucella abortus based on influenza A viruses expressing Brucella L7/L12 or Omp16 proteins: Evaluation of protection in pregnant heifers"", 《VACCINE》 * |
| SHI,Y.C. ET AL.: ""Brucella melitensis ribosomal protein L7/L12 gene, complete cds,Accession No:EF173477.1"", 《GENBANK》 * |
| 张亚丽等: ""布鲁氏菌omp25重组BCG的构建及其疫苗作用检测"", 《中国病原生物学杂志》 * |
| 曾政等: ""布氏杆菌pCDNA3.1-L7/L12核酸疫苗的构建及其免疫学评价"", 《免疫学杂志》 * |
| 李仲乐等: ""布鲁菌真核表达载体 pVAX1 - L7/L12-Omp31 的构建及鉴定"", 《畜牧与兽医》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106854654B (zh) | 2020-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109295123A (zh) | 一种甜菜黄素的生物生产方法 | |
| CN106834331B (zh) | 表达羊种布氏菌P39和L7/L12融合基因的rBCG及其构建方法 | |
| Park et al. | Efficiency to discovery transgenic loci in GM rice using next generation sequencing whole genome re-sequencing | |
| CN103740744B (zh) | 一种玉米黄质合成基因重组质粒及其制备方法和用途 | |
| CN106854654B (zh) | 表达羊种布氏菌L7/L12基因的rBCG及其构建方法与应用 | |
| CN105754958B (zh) | 一种可投送自主发光元件的分枝杆菌噬菌体及其应用 | |
| CN106676124B (zh) | 表达羊种布氏菌P39基因的rBCG及其构建方法与应用 | |
| CN102586161B (zh) | 耻垢分枝杆菌il-17a及其制备方法 | |
| CN114774472A (zh) | 一种耐受戊二胺的重组大肠杆菌构建及应用 | |
| CN112899211B (zh) | 一种氧化葡萄糖酸杆菌中提高2-klg产量的方法 | |
| CN110819652A (zh) | 一种谷氨酸棒杆菌同时基因敲除及基因表达抑制的双功能系统及应用 | |
| KR20180010642A (ko) | 돼지 설사병 백신용 섬모 및 독소를 대량 생산하는 형질전환 대장균 및 이에 의해 생산되는 섬모 및 독소를 항원으로 포함하는 돼지 설사병 예방용 백신 조성물 | |
| CN113755412B (zh) | 一种生产mk-7的基因工程菌及方法、应用 | |
| CN112501103B (zh) | 一株过表达lsrB基因的重组大肠杆菌及其构建方法与应用 | |
| CN111088267B (zh) | 一种提高产溶剂梭菌液体发酵细胞密度的方法 | |
| KR102781683B1 (ko) | 엔테로코쿠스 패슘(Enterococcus faecium) 균에 대하여 용균활성을 갖는 항균단백질 EFL200 | |
| KR101732026B1 (ko) | 스템-루프 구조의 핵산분자를 이용한 박테리아 유전자의 침묵 방법 | |
| CN103446581B (zh) | 一种制备副猪嗜血杆菌病菌影疫苗的方法及其产品和应用 | |
| CN115141856B (zh) | 一种重组梭菌及其构建方法与应用 | |
| CN116327901A (zh) | 一种预防棘球蚴病的疫苗组合物、及其制备方法和应用 | |
| CN102016045A (zh) | 具有改善的表达和稳定性的dna质粒 | |
| CN106636023B (zh) | 一种增强zwf基因启动子表达强度的方法 | |
| CN110272881B (zh) | 核酸内切酶SpCas9高特异性截短变异体TSpCas9-V1/V2及其应用 | |
| CN113549642B (zh) | 一种结核分枝杆菌整合型表达质粒及其应用 | |
| CN113122462A (zh) | 一种提高带荚膜细菌的遗传转化率的方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |