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Characterization of inhibitory activities from Chinese medicinal herbs and in vitro-selected synthetic RNA ligands against HIV-1 protease.

by Lam Tin Lun. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2000. / Includes bibliographical references (leaves 131-151). / Abstracts in English and Chinese. / Acknowledgment --- p.I / Table of content --- p.II / List of Tables --- p.IX / List of Figures --- p.XI / Abbreviation --- p.XIII / Abstract --- p.XIV / 論文摘要 --- p.XVI / Chapter CHAPTER 1 --- INTRODUCTION --- p.1 / Chapter 1.1 --- Acquired immunodeficiency syndrome (AIDS) --- p.1 / Chapter 1.1.1 --- History of AIDS --- p.1 / Chapter 1.1.2 --- Definition of AIDS --- p.2 / Chapter 1.1.3 --- HIV/AIDS Around the World --- p.4 / Chapter 1.1.4 --- HIV/AIDS in Hong Kong --- p.4 / Chapter 1.1.4.1 --- Hong Kong AIDS Update --- p.4 / Chapter 1.1.4.2 --- AIDS Transmission --- p.6 / Chapter 1.1.4.3 --- Main AIDS Complications Occur in Hong Kong --- p.6 / Chapter 1.2 --- Human Immunodeficiency Virus (HIV) --- p.7 / Chapter 1.2.1 --- Classification of HIV --- p.7 / Chapter 1.2.2 --- The Structure of HIV Virion --- p.9 / Chapter 1.2.3 --- The HIV Genome --- p.11 / Chapter 1.2.4 --- The Life Cycle of HIV --- p.12 / Chapter 1.2.4.1 --- Invasion of the Cells --- p.12 / Chapter 1.2.4.2 --- Integration into cell genome --- p.13 / Chapter 1.2.4.3 --- Protease and assembly to the virus --- p.13 / Chapter 1.2.5 --- Three Essential Enzymes for HTV-1 Replication --- p.16 / Chapter 1.2.5.1 --- HIV-1 Reverse Transcriptase (HIV-1 RT) --- p.16 / Chapter 1.2.5.2 --- HIV-1 Integrase (HIV-1 IN) --- p.17 / Chapter 1.2.5.3 --- HIV-1 Protease (HIV-1 PR) --- p.18 / Chapter 1.2.6 --- The Different Stages of HIV Infection --- p.19 / Chapter 1.3 --- AIDS therapy --- p.23 / Chapter 1.3.1 --- Drugs Approved by US Food and Drug Administration (FDA) --- p.23 / Chapter 1.3.2 --- Vaccine --- p.26 / Chapter 1.3.3 --- Chemokine Receptor Inhibitor --- p.27 / Chapter 1.3.4 --- Antisense Oligonucleotides Therpay --- p.28 / Chapter 1.3.5 --- Traditional Chinese Medicine (TCM) --- p.29 / Chapter 1.4 --- Objective of My Project --- p.32 / Chapter CHAPTER 2 --- SCREENING OF TRADITIONAL CHINESE MEDICINAL PLANTS FOR HIV-1 PROTEASE INHIBITION --- p.33 / Chapter 2.1 --- Introduction --- p.33 / Chapter 2.2 --- Materials and Methods --- p.35 / Chapter 2.2.1 --- Materials --- p.35 / Chapter 2.2.2 --- Extraction Methods --- p.36 / Chapter 2.2.2.1 --- Aqueous Extraction --- p.36 / Chapter 2.2.2.2 --- Methanol Extraction --- p.37 / Chapter 2.2.3 --- Preparation of Recombinant HIV-1 Protease --- p.37 / Chapter 2.2.3.1 --- Selection of Appropriate Clone --- p.37 / Chapter 2.2.3.2 --- Large-scale Expression of Recombinant HIV-1 Protease --- p.38 / Chapter 2.2.2.3 --- Purification of Recombinant HIV-1 Protease by DEAE Sepharose CL-6B Chromatography --- p.38 / Chapter 2.2.3.4 --- Purification of Recombinant HIV-1 Protease by Mono-S Cation Chromatography --- p.39 / Chapter 2.2.3.5 --- Refolding of Purified Recombinant HIV-1 Protease --- p.40 / Chapter 2.2.3.6 --- Protein Concentration Determination --- p.41 / Chapter 2.2.3.7 --- Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE) --- p.41 / Chapter 2.2.4 --- Characterization of HTV-1 Protease --- p.42 / Chapter 2.2.4.1 --- HIV-1 PR Fluorogenic Assays --- p.42 / Chapter 2.2.4.2 --- HIV-1 PR Assay by Reverse Phase HPLC Separation of Cleavage Products of the Synthetic Peptide Substrate --- p.43 / Chapter 2.3 --- Results --- p.44 / Chapter 2.3.1 --- Functional Analysis of Recombinant HIV-1 PR Activity --- p.44 / Chapter 2.3.2 --- Screening of Crude Extracts for Inhibition of HIV-1 PR Activity --- p.48 / Chapter 2.4 --- Discussion --- p.53 / Chapter CHAPTER 3 --- ISOLATION AND CHARACTERIZATION OF ACTIVE CONSTITUENTS FROM METHANOL EXTRACTS OF WOODWARDIA UNIGEMMATA AGAINST HIV-1 PROTEASE --- p.56 / Chapter 3.1 --- Introduction --- p.56 / Chapter 3.2 --- Materials and Methods --- p.57 / Chapter 3.2.1 --- Materials --- p.57 / Chapter 3.2.2 --- Methods --- p.58 / Chapter 3.2.2.1 --- Methanol Extraction --- p.58 / Chapter 3.2.2.2 --- Removal of Tannins --- p.60 / Chapter 3.2.2.3 --- Glucosidase Digestion --- p.60 / Chapter 3.2.2.4 --- Analytical Thin Layer Chromatographic (TLC) --- p.61 / Chapter 3.2.2.5 --- A cid Hydrolysis --- p.62 / Chapter 3.2.2.6 --- Electrospray Mass Spectrometry --- p.62 / Chapter 3.2.2.7 --- Dose-response Curve --- p.63 / Chapter 3.2.2.8 --- Kinetic Studies --- p.63 / Chapter 3.2.2.9 --- Activity of the HPLC-purified principle (s) on Other Aspartyl Proteases --- p.63 / Chapter 3.3 --- Results --- p.66 / Chapter 3.3.1 --- Purification of Methanol Extracts of Woocdwardia unigemmata --- p.66 / Chapter 3.2.2 --- Removal of Tannins --- p.70 / Chapter 3.2.3 --- Glucosidase Digestion --- p.73 / Chapter 3.2.4 --- Acid Hydrolysis --- p.73 / Chapter 3.2.5 --- Analytical Thin Layer Chromatography --- p.74 / Chapter 3.2.6 --- Electrospray Mass Spectrometry --- p.80 / Chapter 3.2.7 --- Dose-response Inhibition of HIV-1 Protease --- p.80 / Chapter 3.2.8 --- Kinetic Studies --- p.85 / Chapter 3.2.9 --- Effects of HPLC-purified Active Principle on Other Aspartyl Proteases --- p.87 / Chapter 3.3 --- Discussion --- p.89 / Chapter CHATPER 4 --- IDENTIFICATION OF SELECTIVE RNA APTAMERS AGAINST HIV-1 PROTEASE BY SYSTEMATIC EVOLUTION OF LIGANDS BY EXPONENTIAL ENRICHMENT (SELEX) --- p.95 / Chapter 4.1 --- Introduction --- p.95 / Chapter 4.2 --- Materials and Methods --- p.101 / Chapter 4.2.1 --- Materials --- p.101 / Chapter 4.2.2 --- Methods --- p.102 / Chapter 4.2.2.1 --- PCR Amplification for the Generation of a Double-Stranded DNA Library --- p.103 / Chapter 4.2.2.2 --- Preparation of RNA Pools --- p.104 / Chapter 4.2.2.3 --- In vitro Selection of RNA Ligands --- p.104 / Chapter 4.2.2.4 --- Reverse Transcription Reaction of Selected RNA --- p.108 / Chapter 4.2.2.5 --- Cloning of the Amplified cDNA pools --- p.108 / Chapter 4.2.2.6 --- Subcloning of the digested DNA product into pBluescript® IIKS (-) --- p.108 / Chapter 4.2.2.8 --- RNA Labeling with Digoxigenin (DIG) --- p.109 / Chapter 4.2.2.9 --- Binding Affinity of RNA Ligands for HIV-1 PR --- p.109 / Chapter 4.2.2.10 --- Competition Binding Reactions --- p.111 / Chapter 4.2.2.11 --- HIV-1 PR Inhibitory Activities of the Selected RNA Ligands --- p.112 / Chapter 4.3 --- Results --- p.113 / Chapter 4.3.1 --- In Vitro Selection of RNA Ligands --- p.113 / Chapter 4.3.2 --- Sequences of RNA Ligands --- p.114 / Chapter 4.3.3 --- Binding Affinity of RNA Ligands --- p.114 / Chapter 4.3.4 --- Inhibitory Activity of RNA Ligands --- p.119 / Chapter 4.4 --- Discussion --- p.122 / Chapter CHAPTER 5 --- GENERAL DISCUSSION --- p.128 / REFERENCES --- p.132

Identiferoai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_323104
Date January 2000
ContributorsLam, Tin Lun., Chinese University of Hong Kong Graduate School. Division of Biochemistry.
Source SetsThe Chinese University of Hong Kong
LanguageEnglish, Chinese
Detected LanguageEnglish
TypeText, bibliography
Formatprint, xvi, 151 leaves : ill. ; 30 cm.
CoverageHong Kong, Hong Kong
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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