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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Activin-follistatin system in the ovary of zebrafish, Danio rerio. / CUHK electronic theses & dissertations collection

January 2003 (has links)
Wang Yajun. / "April 2003." / Thesis (Ph.D.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (p. 212-248). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web. / Abstracts in English and Chinese.
2

Roles of activin paracrine system in the oocyte maturation of the zebrafish, Danio rerio. / CUHK electronic theses & dissertations collection / Digital dissertation consortium

January 2001 (has links)
Pang Yefei. / "August 2001." / Thesis (Ph.D.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (p. 161-197). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. Ann Arbor, MI : ProQuest Information and Learning Company, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web. / Abstracts in English and Chinese.
3

Hormonal regulation and promoter analysis of the follicle-stimulating hormone b-subunit gene (FSHb)of goldfish, carassius auratus.

January 2002 (has links)
Ko Nga Ling. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2002. / Includes bibliographical references (leaves 98-131). / Abstracts in English and Chinese. / Abstract (in English) --- p.ii / Abstract (in Chinese) --- p.v / Acknowledgements --- p.vii / Table of Contents --- p.ix / List of Figures --- p.xiv / List of Tables --- p.xvii / Symbols and Abbreviations --- p.xviii / Scientific Names --- p.xxi / Chapter Chapter 1 --- General Introduction / Chapter 1.1 --- Gonadotropins --- p.1 / Chapter 1.1.1 --- Structure --- p.1 / Chapter 1.1.2 --- Function --- p.3 / Chapter 1.1.3 --- Regulation --- p.5 / Chapter 1.1.3.1 --- Hypothalamic regulators (GnRH) --- p.5 / Chapter 1.1.3.2 --- Endocrine regulators from gonads (steroids) --- p.7 / Chapter 1.1.3.3 --- Paracrine regulators (activin) --- p.9 / Chapter 1.1.4 --- Promoter analysis --- p.9 / Chapter 1.2 --- Activin Family of Growth Factors --- p.12 / Chapter 1.2.1 --- Activin --- p.12 / Chapter 1.2.1.1 --- Structure --- p.12 / Chapter 1.2.1.2 --- Function --- p.13 / Chapter 1.2.1.3 --- Signaling --- p.15 / Chapter 1.2.2 --- Follistatin --- p.16 / Chapter 1.2.2.1 --- Structure --- p.16 / Chapter 1.2.2.2 --- Function --- p.17 / Chapter 1.3 --- Objectives --- p.18 / Chapter Chapter 2 --- Establishment and Characterization of Stable LβT2 Cell Lines Containing and Expressing SEAP Driven by the Goldfish FSHβ Promoter / Chapter 2.1 --- Introduction --- p.29 / Chapter 2.2 --- Materials and Methods --- p.31 / Chapter 2.2.1 --- Construction of expression plasmid --- p.31 / Chapter 2.2.2 --- Cell culture --- p.32 / Chapter 2.2.3 --- Cotransfection of LβT2 cells --- p.32 / Chapter 2.2.4 --- G418 selection of transfected LpT2 cells --- p.33 / Chapter 2.2.5 --- SEAP reporter gene assay --- p.33 / Chapter 2.2.6 --- Cloning of pSEAP/gfFSHβ promoter and pBK- CMV-transfected LβT2 cells by limited dilution --- p.34 / Chapter 2.2.7 --- Extraction of genomic DNA --- p.34 / Chapter 2.2.8 --- Isolation of total RNA --- p.35 / Chapter 2.2.9 --- Reverse transcription-polymerase chain reaction (RT-PCR) --- p.35 / Chapter 2.3 --- Results --- p.36 / Chapter 2.3.1 --- Optimization of G418 concentration for selection --- p.36 / Chapter 2.3.2 --- Expression of SEAP reporter gene by pSEAP/gfFSHβ promoter and pBK-CMV-transfected LβT2 cells --- p.37 / Chapter 2.3.3 --- Establishment of LβT2 cell lines that contain a functional gfFSHp promoter --- p.37 / Chapter 2.3.4 --- Characterization of LβT2#23 that contains a functional gfFSHβ promoter --- p.38 / Chapter 2.4 --- Discussion --- p.39 / Chapter Chapter 3 --- Hormonal Regulation of Goldfish Follicle-Stimulating Hormone β (FSHβ) Promoter Activity in LpT2#23 Cells / Chapter 3.1 --- Introduction --- p.52 / Chapter 3.2 --- Materials and Methods --- p.54 / Chapter 3.2.1 --- Cell culture --- p.55 / Chapter 3.2.2 --- Drug treatment --- p.56 / Chapter 3.2.3 --- SEAP reporter gene assay --- p.56 / Chapter 3.2.4 --- Isolation of total RNA --- p.57 / Chapter 3.2.5 --- Reverse transcription-polymerase chain reaction (RT-PCR) --- p.57 / Chapter 3.2.6 --- Data analysis --- p.58 / Chapter 3.3 --- Results --- p.59 / Chapter 3.3.1 --- Effects of goldfish activin on FSHβ promoter --- p.59 / Chapter 3.3.2 --- Blockade of activin effects by follistatin --- p.59 / Chapter 3.3.3 --- Effects of different hormones and steroids on FSHβ promoter --- p.60 / Chapter 3.4 --- Discussion --- p.61 / Chapter Chapter 4 --- Promoter Analysis for the Activin Responsive Element (ARE) in the Goldfish Follicle-Stimulating Hormone β (FSHβ) Gene / Chapter 4.1 --- Introduction --- p.71 / Chapter 4.2 --- Materials and Methods --- p.74 / Chapter 4.2.1 --- Generation of SEAP reporter plasmids containing the gfFSHβ promoter of different lengths --- p.74 / Chapter 4.2.2 --- PCR screening and restriction analysis --- p.75 / Chapter 4.2.3 --- Midiprep --- p.76 / Chapter 4.2.4 --- Cell culture --- p.77 / Chapter 4.2.5 --- Transfection of the pSEAP/gfFSHβ promoter constructs into LβT2 cells --- p.77 / Chapter 4.2.6 --- Activin treatment --- p.77 / Chapter 4.2.7 --- SEAP assay --- p.78 / Chapter 4.3 --- Results --- p.78 / Chapter 4.3.1 --- Subcloning of the gfFSHβ promoter of decreasing length into SEAP reporter vector --- p.78 / Chapter 4.3.2 --- Activin stimulation of the pSEAP/gfFSHβ promoter constucts in LβT2 cells --- p.79 / Chapter 4.4 --- Discussion --- p.80 / Chapter Chapter 5 --- General Discussion / Chapter 5.1 --- Overview --- p.92 / Chapter 5.2 --- Contribution of the present research --- p.95 / Chapter 5.2.1 --- Establishment of stable LβT2 cell lines containing and expressing SEAP driven by gfFSHβ promoter --- p.95 / Chapter 5.2.2 --- Hormonal regulation of the gfFSHβ promoterin LβT2#23 cells --- p.95 / Chapter 5.2.3 --- Identification of the activin responsive element (ARE) on the gfFSHβ promoter --- p.96 / Chapter 5.3 --- Future research direction --- p.96 / References --- p.98
4

Differential regulation of gonadotropin (FSHb and LHb) transcription: roles of activin/Smad and estrogen/ER signaling pathways.

January 2005 (has links)
Lin Sze-Wah. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (leaves 111-127). / Abstracts in English and Chinese. / Abstract (in English) --- p.i / Abstract (in Chinese) --- p.iii / Acknowledgements --- p.iv / Table of Contents --- p.v / Abbreviations --- p.x / Scientific Names --- p.xii / Chapter CHAPTER 1 --- GENERAL INTRODUCTION --- p.1 / Chapter 1.1 --- Gonadotropins --- p.1 / Chapter 1.1.1 --- Structure --- p.1 / Chapter 1.1.2 --- Function --- p.1 / Chapter 1.1.3 --- Regulation --- p.2 / Chapter 1.1.3.1 --- Gonadotropin-releasing hormone (GnRH) --- p.3 / Chapter 1.1.3.2 --- Dopamine --- p.4 / Chapter 1.1.3.3 --- Sex steroids --- p.5 / Chapter 1.1.3.3.1 --- Functions --- p.5 / Chapter 1.1.3.3.2 --- Working mechanism´ؤEstrogen signaling pathway --- p.7 / Chapter 1.1.3.4 --- Gonadal peptides --- p.9 / Chapter 1.1.3.4.1 --- Functions --- p.9 / Chapter 1.1.3.4.2 --- Working mechanism一Activin signaling pathway --- p.11 / Chapter 1.2 --- Transcriptional regulation of pituitary gonadotropin subunit genes at the promoter level --- p.13 / Chapter 1.2.1 --- Transcriptional regulation of mammalian glycoprotein a subunits --- p.13 / Chapter 1.2.1.1 --- GnRH --- p.14 / Chapter 1.2.1.2 --- Activin --- p.15 / Chapter 1.2.1.3 --- Steroids --- p.15 / Chapter 1.2.2 --- Transcriptional regulation of mammalian FSHβ and LHβ subunits --- p.16 / Chapter 1.2.2.1 --- Regulation of LHβ expression by GnRH --- p.17 / Chapter 1.2.2.1.1 --- Roles of SP-1 binding sites on LHβ promoter --- p.17 / Chapter 1.2.2.1.2 --- Effect of SF-1 on LHp expression --- p.17 / Chapter 1.2.2.1.3 --- Effect of Egr-1 on LHp expression --- p.18 / Chapter 1.2.2.1.4 --- "Synergistic effect ofSP-1, SF-1 and Egr-1 on LHp expression." --- p.18 / Chapter 1.2.2.1.5 --- Effect of Pitx-1 on LHβ expression --- p.19 / Chapter 1.2.2.1.6 --- "Effect of SF-1, Egr-1 and Pitx-1 on LHβ expression of other mammalian counterparts" --- p.19 / Chapter 1.2.2.1.7 --- Effect of other transcription factors on mammalian LHβ expression --- p.19 / Chapter 1.2.2.2 --- Regulation of LHβ expression by steroids and activin --- p.20 / Chapter 1.2.2.3 --- Regulation of FSHβ expression by activin and GnRH --- p.20 / Chapter 1.2.2.4 --- Regulation of FSHβ expression by steroids --- p.21 / Chapter 1.2.2.5 --- Regulation of FSHβ expression by other transcription factors --- p.22 / Chapter 1.2.3 --- Transcriptional regulation of fish FSHβ and LHβ subunits --- p.22 / Chapter 1.3 --- The project objectives and long-term significance --- p.24 / Chapter CHAPTER 2 --- CLONING OF ZEBRAFISH FSHB AND LHB PROMOTERS. --- p.26 / Chapter 2.1 --- Introduction --- p.26 / Chapter 2.2 --- Materials and Methods --- p.27 / Chapter 2.2.1 --- Chemicals --- p.27 / Chapter 2.2.2 --- Animals --- p.27 / Chapter 2.2.3 --- Isolation of genomic DNA --- p.28 / Chapter 2.2.4 --- Cloning of promoters of zebrafish FSHβ and LHβ from the genomic DNA --- p.28 / Chapter 2.2.5 --- Construction of the reporter plasmids containing zebrafish FSHβ and LHβ promoters --- p.30 / Chapter 2.2.6 --- Cell culture and transient transfection --- p.31 / Chapter 2.2.7 --- SEAP reporter gene assay --- p.32 / Chapter 2.2.8 --- β-galactosidase reporter gene assay --- p.32 / Chapter 2.2.9 --- Data analysis --- p.33 / Chapter 2.3 --- Results --- p.33 / Chapter 2.3.1 --- Cloning of zebrafish FSHβ and LHβ promoters --- p.33 / Chapter 2.3.2 --- Sequence characterization of zebrafish FSHβ and LHβ promoters --- p.34 / Chapter 2.3.3 --- Basal FSHp and LHβ promoter activities in LβT2 cells --- p.35 / Chapter 2.4 --- Discussion --- p.36 / Chapter CHAPTER 3 --- ROLES OF ACTIVIN/SMADS AND ESTROGEN/ERS IN THE REGULATION OF ZEBRAFISH FSHB AND LHB PROMOTER ACTIVITY --- p.51 / Chapter 3.1 --- Introduction --- p.52 / Chapter 3.2 --- Materials and Methods --- p.56 / Chapter 3.2.1 --- Chemicals --- p.56 / Chapter 3.2.2 --- Animals --- p.56 / Chapter 3.2.3 --- Isolation of total RNA --- p.57 / Chapter 3.2.4 --- Rapid amplification of full-length cDNA (RACE) --- p.57 / Chapter 3.2.5 --- Construction of expression plasmids --- p.57 / Chapter 3.2.6 --- cell culture and transient transfection --- p.59 / Chapter 3.2.7 --- SEAP reporter gene assay --- p.59 / Chapter 3.2.8 --- p-galactosidase reporter gene assay --- p.59 / Chapter 3.2.9 --- Data analysis --- p.59 / Chapter 3.3 --- Results --- p.60 / Chapter 3.3.1 --- Cloning and sequence characterization of zebrafish Smad 4 (zfSmad 4) --- p.60 / Chapter 3.3.2 --- Smads regulate FSHβ transcription in LβT2 cells --- p.61 / Chapter 3.3.3 --- Smads regulate LHβ transcription in LPβT2 cells --- p.61 / Chapter 3.3.4 --- Functionality of the two forms of Smad 4 cloned --- p.62 / Chapter 3.3.5 --- Estrogen and ERs regulate zJFSHβ transcription in LβT2 cells --- p.63 / Chapter 3.3.6 --- Estrogen and ERs regulate zfLHβ transcription in LβT2 cells --- p.63 / Chapter 3.4 --- Discussion --- p.64 / Chapter CHAPTER 4 --- PROMOTER ANALYSIS FOR SMAD RESPONSIVE ELEMENT AND ESTROGEN RESPONSIVE ELEMENT IN ZEBRAFISH FSHB AND LHB PROMOTERS --- p.82 / Chapter 4.1 --- Introduction --- p.83 / Chapter 4.2 --- Materials and Methods --- p.85 / Chapter 4.2.1 --- Chemicals and animals --- p.85 / Chapter 4.2.2 --- Construction of SEAP reporter plasmids containing different lengths of zfFSHβ promoter --- p.85 / Chapter 4.2.3 --- Construction of SEAP reporter plasmids containing different lengths of zfLHβ promoter --- p.85 / Chapter 4.2.4 --- Site-directed mutagenesis --- p.86 / Chapter 4.2.5 --- cell culture and transient transfection --- p.87 / Chapter 4.2.6 --- SEAP reporter gene assay --- p.87 / Chapter 4.2.7 --- P-galactosidase reporter gene assay --- p.87 / Chapter 4.2.8 --- Data analysis --- p.88 / Chapter 4.3 --- Results --- p.88 / Chapter 4.3.1 --- Localization of Smad-responsive element (SRE) on zfFSHβ promoter --- p.88 / Chapter 4.3.2 --- Localization of estrogen-responsive element (ERE) on zfLHβ promoter --- p.89 / Chapter 4.3.3 --- Localization of estrogen-responsive element (ERE) on zfFSHβ promoter --- p.90 / Chapter 4.3.4 --- Confirmation of SRE by site-directed mutagenesis --- p.91 / Chapter 4.3.5 --- Confirmation of ERE by site-directed mutagenesis --- p.92 / Chapter 4.4 --- Discussion --- p.92 / Chapter CHAPTER 5 --- GENERAL DISCUSSION --- p.106 / Chapter 5.1 --- Overview --- p.106 / Chapter 5.2 --- Contribution of the present research --- p.107 / Chapter 5.3 --- Future research direction --- p.108 / REFERENCE: --- p.111
5

Cloning and characterization of follistatin in the goldfish, Carassius auratus.

January 2003 (has links)
Cheng Fu Yip Gheorghe. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (leaves 97-116). / Abstracts in English and Chinese. / Acknowledgement --- p.I / Abstract (in English) --- p.III / Abstract (in Chinese) --- p.V / Table of Content --- p.VII / Symbols and Abbreviations --- p.XII / Scientific Names --- p.XIV / List of Tables --- p.XV / List of Figures --- p.XVI / Chapter Chapter 1 --- General Introduction / Chapter 1.1 --- Gonadotropin / Chapter 1.1.1 --- Structure --- p.2 / Chapter 1.1.2 --- Function --- p.3 / Chapter 1.1.3 --- Regulation --- p.4 / Chapter 1.1.3.1 --- Neuroendocrine and endocrine regulation of GTHs --- p.4 / Chapter 1.1.3.1.1 --- Hypothalamic neuropeptides and neurotransmitters --- p.6 / Chapter 1.1.3.1.2 --- Gonadal steroids --- p.7 / Chapter 1.1.3.2 --- Paracrine regulation of GTH --- p.8 / Chapter 1.2 --- Activin / Chapter 1.2.1 --- Structure --- p.8 / Chapter 1.2.2 --- Function --- p.9 / Chapter 1.2.3 --- Regulation of activin activity --- p.12 / Chapter 1.2.3.1 --- Intracellular blockade of activin signaling by Smad7 --- p.12 / Chapter 1.2.3.2 --- Extracellular control of activin access --- p.13 / Chapter 1.2.3.2.1 --- Inhibin --- p.13 / Chapter 1.2.3.2.2 --- Activin-binding protein --- p.14 / Chapter 1.3 --- Follistatin / Chapter 1.3.1 --- Structure --- p.14 / Chapter 1.3.2 --- Function --- p.16 / Chapter 1.3.3 --- Regulation in the pituitary --- p.19 / Chapter 1.4 --- Objectives of the Present Study --- p.20 / Chapter Chapter 2 --- Cloning and Recombinant Production of Goldfish Follistatin / Chapter 2.1 --- Introduction --- p.24 / Chapter 2.2 --- Materials and Methods / Chapter 2.2.1 --- Reagents --- p.26 / Chapter 2.2.2 --- Animal --- p.26 / Chapter 2.2.3 --- Extraction of total RNA and reverse transcription --- p.27 / Chapter 2.2.4 --- Cloning of full-length cDNA encoding goldfish follistatin --- p.27 / Chapter 2.2.5 --- Sequencing of the cDNA --- p.29 / Chapter 2.2.6 --- Distribution of follistatin mRNA in different tissues --- p.29 / Chapter 2.2.7 --- Production of rgFS --- p.30 / Chapter 2.2.8 --- RT-PCR of the rgFS-positive clones --- p.34 / Chapter 2.2.9 --- Extraction of genomic DNA from rgFS-positive clones --- p.34 / Chapter 2.2.10 --- Functional analysis of rgFS --- p.35 / Chapter 2.2.11 --- Data Analysis --- p.37 / Chapter 2.3 --- Results / Chapter 2.3.1 --- Cloning and sequence analysis of goldfish follistatin --- p.37 / Chapter 2.3.2 --- Tissue distribution of follistatin mRNA in the goldfish --- p.39 / Chapter 2.3.3 --- Production and bioassay of rgFS --- p.43 / Chapter 2.4 --- Discussion --- p.47 / Chapter Chapter 3 --- Function and Regulation of Follistatin in the Goldfish Pituitary; Evidence for an Intrinsic Activin/Follistatin Regulatory Feedback Loop / Chapter 3.1 --- Introduction --- p.54 / Chapter 3.2 --- Materials and Methods / Chapter 3.2.1 --- Reagents --- p.57 / Chapter 3.2.2 --- Animals --- p.57 / Chapter 3.2.3 --- Primary culture of dispersed pituitary cells --- p.57 / Chapter 3.2.4 --- RNA extraction and reverse transcription --- p.58 / Chapter 3.2.5 --- Ovariectomy on pituitary follistatin expression --- p.5 9 / Chapter 3.2.6 --- Seasonal expression profile of follistatin --- p.59 / Chapter 3.2.7 --- Validation of semi-quantitative RT-PCR assays --- p.61 / Chapter 3.2.8 --- Real-time PCR for assay on follistatin and β-actin expression --- p.61 / Chapter 3.2.9 --- Data analysis --- p.63 / Chapter 3.3 --- Results / Chapter 3.3.1 --- Expression of follistatin in the goldfish pituitary --- p.64 / Chapter 3.3.2 --- Validation of semi-quantitative RT-PCR assay --- p.64 / Chapter 3.3.3 --- Activin regulation of pituitary follistatin --- p.64 / Chapter 3.3.4 --- Effects of sex steroids on pituitary follistatin expression --- p.69 / Chapter 3.3.5 --- Effect of GnRH on follistatin expression in the pituitary --- p.74 / Chapter 3.3.6 --- Effect of intracellular cAMP level on pituitary follistatin expression --- p.74 / Chapter 3.3.7 --- Seasonal variation profile of goldfish pituitary follistatin --- p.78 / Chapter 3.4 --- Discussion --- p.78 / Chapter Chapter 4 --- General Discussion / Chapter 4.1 --- Overview --- p.89 / Chapter 4.2 --- Contribution of the Present Study / Chapter 4.2.1 --- Cloning of full-length goldfish follistatin cDNA --- p.91 / Chapter 4.2.2 --- Establishment of stable cell line for expression of rgFS --- p.92 / Chapter 4.2.3 --- Evidence for the presence of intrinsic feedback loop of activin in the goldfish pituitary --- p.92 / Chapter 4.2.4 --- Modulation of follistatin expression in the pituitary by sex steroids --- p.93 / Chapter 4.2.5 --- Conclusions --- p.93 / Chapter 4.3 --- Future Prospects / Chapter 4.3.1 --- Production of rgFS --- p.95 / Chapter 4.3.2 --- Regulation of activin-follistatin system in the pituitary --- p.95 / Reference --- p.96

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