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同源Hsp20和异源IL-10基因在蛋白质Sec-分泌体系修饰的长双歧杆菌NCC2705中的表达

ABSTRACT第5-7页
摘要第8-15页
LIST OF FIGURES第15-17页
LIST OF TABLES第17-18页
Abbrivations第18-19页
Chapter Ⅰ: Introduction第19-50页
    1.1 Bifidobacteria第19-20页
    1.2 Gene expression in Bifidobacteria第20-29页
    1.3 Functional assay of probiotic organisms第29-34页
    1.4 Protein secretion in lactic acid bacteria/bifidobacteria第34-44页
        1.4.1 Sec system第37-38页
        1.4.2 Components of sec system第38-44页
    1.5 Signal peptides第44-46页
    1.6 Vaccine delivery第46页
    1.7 IL-10 gene第46-48页
    1.8 The aim of this study第48-49页
    1.9 The general research technique route第49-50页
Chapter Ⅱ: Homologous sHsp expression in bifidobacterium longum NCC2705第50-75页
    2.1 Introduction第50-52页
    2.2 Materials and Methods第52-63页
        2.2.1. Bacterial strains,plasmids,and culture conditions第52页
        2.2.2 Media preparation第52-53页
        2.2.3 Antibiotics第53页
        2.2.4 IPTG and X-gal solution第53页
        2.2.5 TAE agarose gel electrophoresis reagents第53-55页
        2.2.6 Reagents for DNA extraction第55-57页
        2.2.7 DNA extraction of B.longum NCC2705第57-58页
        2.2.8 TAE Agarose Gel Electrophoresis analysis第58页
        2.2.9 Cloning of hsp20(BL0576)from B.longum strain NCC2705第58页
        2.2.10 Recycling/Purification of PCR products第58页
        2.2.11 TA cloning PCR products of homologous shp 20 gene第58-59页
        2.2.12 Transformation of PCR products into E.coli DH5α第59页
        2.2.13 Preparation of Plasmid DNA and quantification of DNA第59页
        2.2.14 Digestion of DNA第59页
        2.2.15 Gel purification/Recycling of Digest DNA第59-60页
        2.2.16 Ligation reaction第60页
        2.2.17 Construction of expression vector and transformation第60页
        2.2.18 Assay of stress tolerance of hsp20-overproducing B.longum NCC2705第60-61页
        2.2.19 Quantitative reverse transcription PCR(qRT-PCR)第61-62页
        2.2.20 Statistical Analysis第62-63页
    2.3 Results第63-71页
        2.3.1 Cloning of homologous hsp 20(sHsp)gene and construction of homologous expression cassette第63页
        2.3.2 Overexpression of hsp20(sHsp)in B.longum NCC2705第63-65页
        2.3.3 Heat-stress tolerance of sHsp-overproducing B.longum NCC2705第65-67页
        2.3.4 Salt-stress tolerance of sHsp-overproducing B.longum NCC2705第67-68页
        2.3.5 Multiple stress tolerance of hsp20-overexpressing B.longum NCC2705第68-71页
    2.4 Discussion第71-74页
    2.5 Summary第74-75页
Chapter Ⅲ: Heterologous IL-10 transformation in Bifidobacterium longum NCC2705第75-89页
    3.1 Introduction第75-77页
    3.2 Materials and Methods第77-82页
        3.2.1 Bacterial strains,plasmids,and culture conditions第77页
        3.2.2 Media preparation第77-78页
        3.2.3 Antibiotics第78页
        3.2.4 IPTG and X-gal第78-79页
        3.2.5 TAE agarose gel electrophoresis reagents第79页
        3.2.6 Reagents for DNA extraction第79页
        3.2.7 DNA extraction of B.longum NCC2705第79页
        3.2.8 Cloning of expression cassette(PGAP-IL10-Thup)from pESH93第79页
        3.2.9 TAE agarose Gel Electrophoresis analysis第79页
        3.2.10 Recycling/Purification of PCR products第79-80页
        3.2.11 TA cloning of IL-10 gene第80页
        3.2.12 Transformation of heterologous IL-10 into E.coli DH5α第80页
        3.2.13 Plasmid DNA isolation and Quantification of DNA第80页
        3.2.14 Digestion of DNA第80页
        3.2.15 Gel purification/Recycling of Digest DNA第80页
        3.2.16 Ligation reaction第80页
        3.2.17 Heterologous IL-10 expression vector construction and transformation in B.longum NCC第80-81页
        3.2.18 RNA isolation and sqRT-PCR第81-82页
    3.3 Results第82-87页
        3.3.1 pDP870-IL-10 expression vector第82-84页
        3.3.2 Transformation of expression vectors in B.longum NCC2705第84页
        3.3.3 Semi-quantitative reverse transcription of IL-10 gene第84-87页
    3.4 Discussion第87-88页
    3.5 Summary第88-89页
Chapter Ⅳ: Modification of Sec-system of Bifidobacterium longum NCC2705第89-109页
    4.1 Introduction第89-91页
    4.2. Materials and Methods第91-98页
        4.2.1 Bacterial strains,plasmids,and culture conditions第91-93页
        4.2.2 Media preparation第93页
        4.2.3 Antibiotics第93-94页
        4.2.4 IPTG and X-gal第94页
        4.2.5 TAE agarose gel electrophoresis reagents第94页
        4.2.6 Reagents for DNA extraction第94页
        4.2.7 DNA extraction of B.longum NCC2705第94页
        4.2.8 TAE agarose Gel Electrophoresis analysis第94页
        4.2.9 Cloning of heterologous secDF and construction of expression vector第94-95页
        4.2.10 Recycling/Purification of PCR products第95页
        4.2.11 TA cloning of heterologous secDF第95页
        4.2.12 Transformation of heterologous sec DF into E.coli DH5α第95页
        4.2.13 Plasmid DNA isolation and Quantification of DNA第95页
        4.2.14 Digestion of DNA第95-96页
        4.2.15 Gel purification/Recycling of Digest DNA第96页
        4.2.16 Ligation reaction第96页
        4.2.17 Modification of sec system in B.longum NCC2705第96页
        4.2.18 RNA isolation and sqRT-PCR第96-98页
    4.3 Results第98-105页
        4.3.1 pDP870-SecDF expression vector第98-100页
        4.3.2 pDP870-SecDF-IL10 expression vector第100-101页
        4.3.3 Transformation of expression vectors and modification of sec machinery in Bifidobacterium longum NCC2705第101-103页
        4.3.4 RNA isolation and semi-quantitative reverse transcription-polymerase chain reaction第103-105页
    4.4 Discussion第105-107页
    4.5 Summary第107-109页
Chapter Ⅴ: Protein expression and function assay in sec-System modified Bifidobacterium longum NCC2705第109-125页
    5.1 Introduction第109-111页
    5.2 Material and methods第111-117页
        5.2.1 Strains, reagents and solutions第111-112页
        5.2.2 Denaturing polyacrylamide gel electrophoresis第112-113页
        5.2.3 Preparation of bacterial cell fractions第113页
        5.2.4 TCA precipitation of supernatant protein第113-114页
        5.2.5 Coomassie staining第114页
        5.2.6 Western blotting第114页
        5.2.7 Binding of transferred protein with specific antibodies第114-115页
        5.2.8 Culture condition and epithelial HT-29 cell line application on sec modified Bifidobacterial strains第115-117页
    5.3 Results第117-122页
        5.3.1 Protein secretion of B. longum NCC2705第117-118页
        5.3.2 Western blot analysis for IL-10 secretion in B. longum NCC2705第118-120页
        5.3.3 Cellular functional assay of the IL-10 expressed by Sec-modified transformant第120-122页
    5.4 Discussion第122-124页
    5.5 Summary第124-125页
Chapter Ⅵ: Summary, conclusion and suggestion第125-132页
    6.1 Summary第125-130页
        6.1.1 Overexpression of sHsp(hsp 20 BL05763) in B. longum NCC2705第125页
        6.1.2 Heat-stress tolerance of sHsp-overproducing B. longum NCC2705第125-126页
        6.1.3 Salt-stress tolerance of sHsp-overproducing B. longum NCC2705第126页
        6.1.4 Multiple stress tolerance of Hsp20-overexpressing B. longum NCC2705第126-127页
        6.1.5 pDP870-IL-10 expression vector第127页
        6.1.6 Transformation of heterologous IL-10 expression vector in B. longum NCC2705第127页
        6.1.7 RNA isolation and sqRT-PCR for IL-10第127页
        6.1.8 pDP870-secDFexpression vector第127-128页
        6.1.9 pDP870-secDF-IL-10 co-expression vector第128页
        6.1.10 Transformation of expression vector and modification of sec machinary in B.longum NCC2705第128页
        6.1.11 RNA isolation and sqRT-PCR for secDF and IL-10第128页
        6.1.12 Protein expression in B.longum NCC2705第128-129页
        6.1.13 Western blot第129页
        6.1.14 Cellular functional assay of the IL-10 expressed by sec-modified transformant第129-130页
    6.2 Conclusion第130-131页
    6.3 Suggestion第131-132页
Literature cited第132-152页
Acknowledgements第152-154页
Curriculum Vitae第154-156页

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