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Endocytic pathway in mushroom development: role of Le.Rab7 and interacting proteins.

Lee Ming Tsung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (leaves 160-177). / Abstracts in English and Chinese. / Abstract --- p.i / 摘要 --- p.iii / Acknowledgements --- p.v / Abbreviations --- p.vi / Table of contents --- p.vii / List of Figures --- p.xii / List of Tables --- p.xiv / Chapter Chapter 1 --- Literature Review --- p.1 / Chapter 1.1 --- Introduction --- p.1 / Chapter 1.2 --- Nutritional values --- p.2 / Chapter 1.3 --- Medicinal values --- p.3 / Chapter 1.3.1 --- Anti-tumor effect --- p.3 / Chapter 1.3.2 --- Anti-viral and anti-caries effect --- p.4 / Chapter 1.3.3 --- Immunopotentiating effect --- p.4 / Chapter 1.3.4 --- Hypocholesterolaemic effect --- p.5 / Chapter 1.4 --- Life cycle and morphology --- p.6 / Chapter 1.5 --- Growth requirements --- p.9 / Chapter 1.5.1 --- Nutritional factors --- p.9 / Chapter 1.5.2 --- Physical and chemical factors --- p.10 / Chapter 1.6 --- Application of L. edodes --- p.12 / Chapter 1.7 --- Endocytosis --- p.13 / Chapter 1.7.1 --- Different types of endocytosis --- p.13 / Chapter 1.7.1.1 --- Phagocytosis --- p.14 / Chapter 1.7.1.2 --- Pinocytosis --- p.15 / Chapter 1.7.1.3 --- Receptor-mediated endocytosis --- p.15 / Chapter 1.7.2 --- The Endocytic Pathway --- p.17 / Chapter 1.7.3 --- Endocytosis in fungi --- p.20 / Chapter 1.7.4 --- Rab GTPases --- p.21 / Chapter 1.7.4.1 --- Control of the active and inactive state of Rab proteins --- p.22 / Chapter 1.7.4.2 --- Regulation of docking and fusion of membrane in endosomal trafficking --- p.23 / Chapter 1.7.4.3 --- Rab7 GTPase --- p.26 / Chapter 1.8 --- Aims of the project --- p.28 / Chapter Chapter 2 --- Protein-protein Interaction Study of Le.Rab7 by in vivo and in vitro Interaction Assay --- p.29 / Chapter 2.1 --- Introduction --- p.29 / Chapter 2.2 --- Materials and Methods --- p.36 / Chapter 2.2.1 --- Yeast two-hybrid screening --- p.36 / Chapter 2.2.1.1 --- Confirmation of the clones Le.Rab7-pGBK.T7 --- p.36 / Chapter 2.2.1.1.1 --- Bacterial transformation --- p.36 / Chapter 2.2.1.1.2 --- PCR screening for positive transformants --- p.38 / Chapter 2.2.1.1.3 --- Plasmid preparation and confirmation of transformants --- p.38 / Chapter 2.2.1.1.4 --- Sequencing --- p.39 / Chapter 2.2.1.2 --- Confirmation of Le.Rab7 protein expression in yeast --- p.40 / Chapter 2.2.1.2.1 --- Yeast transformation --- p.40 / Chapter 2.2.1.2.2 --- Yeast protein extraction --- p.40 / Chapter 2.2.1.2.3 --- Western Blotting --- p.41 / Chapter 2.2.1.3 --- Yeast Two-hybrid screening by Yeast-mating --- p.42 / Chapter 2.2.1.4 --- Identification of Preys --- p.44 / Chapter 2.2.1.4.1 --- PCR screening for clones grown on plates --- p.44 / Chapter 2.2.1.4.2 --- Colony lift filter assay --- p.45 / Chapter 2.2.1.4.3 --- Sequencing --- p.47 / Chapter 2.2.1.5 --- Confirmation of interaction by Co-transformation assay --- p.47 / Chapter 2.2.1.5.1 --- Plasmid preparation of positive clones --- p.47 / Chapter 2.2.1.5.2 --- Transformation and bacterial plasmid preparation --- p.48 / Chapter 2.2.1.5.3 --- Yeast two-hybrid screening by co-transformation --- p.48 / Chapter 2.2.1.5.4 --- Colony lift filter assay --- p.50 / Chapter 2.2.2 --- Rapid Amplification of cDNA 5'ends --- p.51 / Chapter 2.2.2.1 --- RNA preparation --- p.51 / Chapter 2.2.2.1.1 --- Strains and culture conditions --- p.51 / Chapter 2.2.2.1.2 --- RNA extraction --- p.51 / Chapter 2.2.2.2 --- 5' RACE --- p.52 / Chapter 2.2.2.2.1 --- RNA processing --- p.52 / Chapter 2.2.2.2.2 --- Reverse transcription --- p.53 / Chapter 2.2.2.2.3 --- Nested PCR for 5'RLM-RACE --- p.53 / Chapter 2.2.2.3 --- "Gel analysis of products, TA cloning of RACE product and sequencing" --- p.54 / Chapter 2.2.2.4 --- Cloning of full-length Le.Rab5 --- p.54 / Chapter 2.2.3 --- In vitro protein-protein interaction assay --- p.55 / Chapter 2.2.3.1 --- Plasmid extraction from E.coli --- p.55 / Chapter 2.2.3.2 --- In vitro translation --- p.56 / Chapter 2.2.3.3 --- In vitro co-immunoprecipitation --- p.56 / Chapter 2.3 --- Results --- p.57 / Chapter 2.3.1 --- Yeast two-hybrid analysis by yeast mating assay --- p.57 / Chapter 2.2.1.1 --- Confirmation of the clones Le.Ra67-pGBKT7 --- p.57 / Chapter 2.3.1.1.1 --- PCR screening for positive transformants --- p.57 / Chapter 2.3.1.1.2 --- Plasmid preparation and confirmation of transformants --- p.58 / Chapter 2.3.1.1.3 --- Sequencing --- p.59 / Chapter 2.2.1.2 --- Confirmation of protein expression in yeast --- p.60 / Chapter 2.3.1.2.1 --- Yeast transformation --- p.60 / Chapter 2.3.1.2.2 --- SDS-PAGE and Western blotting of Le.Rab7 in yeast --- p.61 / Chapter 2.2.1.3 --- Yeast two-hybrid screening by yeast mating assay --- p.62 / Chapter 2.2.1.4 --- Identification of Preys --- p.63 / Chapter 2.3.1.4.1 --- PCR screening for clones grown on plates --- p.63 / Chapter 2.3.1.4.2 --- Colony lift assay --- p.65 / Chapter 2.3.1.4.3 --- Sequencing --- p.67 / Chapter 2.3.2 --- Confirmation of interactions by co-transformation assay --- p.70 / Chapter 2.2.2.1 --- Yeast two-hybrid analysis by co-transformation assay --- p.70 / Chapter 2.2.2.2 --- Colony lift filter assay --- p.70 / Chapter 2.2.2.3 --- Selection of prey plasmids for in vitro binding assay --- p.72 / Chapter 2.3.3 --- Rapid amplification of cDNA ends (RACE) --- p.76 / Chapter 2.2.3.1 --- TA cloning of RACE product and sequencing --- p.76 / Chapter 2.2.3.2 --- Cloning of full-length Le.Rab5 --- p.79 / Chapter 2.3.4 --- In vitro protein-protein interaction assay --- p.80 / Chapter 2.4 --- Discussion --- p.82 / Chapter Chapter 3 --- Temporal and Spatial expression of Le.Rab7,Le.Rab5 and Le.RACKl --- p.87 / Chapter 3.1 --- Introduction --- p.87 / Chapter 3.2 --- Materials and Methods --- p.93 / Chapter 3.2.1 --- Northern blot analysis --- p.93 / Chapter 3.2.1.1 --- RNA fractionation by formaldehyde gel electrophoresis --- p.93 / Chapter 3.2.1.2 --- Northern blotting --- p.94 / Chapter 3.2.1.2.1 --- Transfer of RNAs --- p.94 / Chapter 3.2.1.2.2 --- Probe preparation --- p.95 / Chapter 3.2.1.2.3 --- "Hybridization, Stringency washes and Signal detection" --- p.96 / Chapter 3.2.2 --- Quantitative RT-PCR --- p.97 / Chapter 3.2.2.1 --- cDNA synthesis from different developmental stages --- p.97 / Chapter 3.2.2.1.1 --- RNA preparation extraction --- p.97 / Chapter 3.2.2.1.2 --- DNase I treatment --- p.97 / Chapter 3.2.2.1.3 --- Reverse transcription --- p.98 / Chapter 3.2.2.2 --- Real time PCR --- p.98 / Chapter 3.2.2.2.1 --- Primer design and verification --- p.98 / Chapter 3.2.2.2.2 --- Real time PCR reaction and data analysis --- p.100 / Chapter 3.2.3 --- In situ RNA-RNA hybridization --- p.101 / Chapter 3.2.3.1 --- Preparation of samples and probes --- p.101 / Chapter 3.2.3.1.1 --- Tissue preparation --- p.101 / Chapter 3.2.3.1.2 --- RNA probe synthesis --- p.101 / Chapter 3.2.3.2 --- Hybridization and Signal development --- p.102 / Chapter 3.2.3.3 --- Image viewing --- p.103 / Chapter 3.3 --- Results --- p.105 / Chapter 3.3.1 --- Northern blot analysis --- p.105 / Chapter 3.3.2 --- Quantitative RT-PCR assays --- p.109 / Chapter 3.3.3 --- In situ RNA-RNA hybridization --- p.113 / Chapter 3.4 --- Discussion --- p.119 / Chapter Chapter 4 --- Existence of endocytosis and Protein localization of Le.Rab7 in L. edodes --- p.123 / Chapter 4.1 --- Introduction --- p.123 / Chapter 4.2 --- Materials and Methods --- p.127 / Chapter 4.2.1 --- Tracing the endocytie pathway using FM4-64 dye --- p.127 / Chapter 4.2.1.1 --- Strains and culture conditions --- p.127 / Chapter 4.2.1.2 --- FM4-64 internalization in mycelium and gill tissue of L. edodes --- p.127 / Chapter 4.2.2 --- Drug treatment effect on the internalization of FM4-64 dye --- p.128 / Chapter 4.2.3 --- Double labeling with AM4-64 and anti-Le.Rab7 antibody --- p.129 / Chapter 4.2.3.1 --- Synthesis of Le.Rab7 antibody --- p.129 / Chapter 4.2.3.1.1 --- Customization of Le.Rab7 antiserum --- p.129 / Chapter 4.2.3.1.2 --- Validation of anti-Le.Rab7 polyclonal antiserum --- p.129 / Chapter 4.2.3.2 --- Double immunofluorescence labeling --- p.130 / Chapter 4.2.4 --- Immunohistochemistry of young and mature fruiting body --- p.131 / Chapter 4.2.4.1 --- Tissue preparation --- p.131 / Chapter 4.2.4.2 --- Immunohistochemical staining --- p.132 / Chapter 4.2.4.3 --- Image viewing --- p.133 / Chapter 4.3 --- Results --- p.134 / Chapter 4.3.1 --- Presence of endocytosis in L .edodes --- p.134 / Chapter 4.3.2 --- Validation of active transport of FM4-64 --- p.137 / Chapter 4.3.3 --- Dye internalization at specific structures in L. edodes --- p.138 / Chapter 4.3.4 --- Presence of Le.Rab7 protein in the endosomal structures along the endocytic pathway --- p.142 / Chapter 4.3.5 --- Presence of Le.Rab7 protein in the pre- and hymenophore of fruiting body --- p.145 / Chapter 4.4 --- Discussion --- p.148 / Chapter Chapter 5 --- General discussion --- p.152 / References --- p.160

Identiferoai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_325669
Date January 2006
ContributorsLee, Ming Tsung., Chinese University of Hong Kong Graduate School. Division of Biology.
Source SetsThe Chinese University of Hong Kong
LanguageEnglish, Chinese
Detected LanguageEnglish
TypeText, bibliography
Formatprint, xv, 177 leaves : ill. (some col.) ; 30 cm.
RightsUse of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/)

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