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  1. NTU Theses and Dissertations Repository
  2. 醫學院
  3. 微生物學科所
請用此 Handle URI 來引用此文件: http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/29734
完整後設資料紀錄
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dc.contributor.advisor翁秀貞(Shiou-Jeng Ong),戴榮湘(Jung-Hsiang Tai)
dc.contributor.authorYa-Ting Wangen
dc.contributor.author王雅婷zh_TW
dc.date.accessioned2021-06-13T01:16:43Z-
dc.date.available2009-08-08
dc.date.copyright2007-08-08
dc.date.issued2007
dc.date.submitted2007-07-19
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39. Mundodi, V., A. S. Kucknoor, D. J. Klumpp, T. H. Chang, and J. F. Alderete. 2004. Silencing the ap65 gene reduces adherence to vaginal epithelial cells by Trichomonas vaginalis. Mol.Microbiol. 53:1099-1108.
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43. Ness, S. A. 2003. Myb protein specificity: evidence of a context-specific ranscription factor code. Blood Cells Mol Dis. 31:192-200.
44. O’Brien, J. L., C. M. Lauriano, and J. F. Alderete. 1996. Molecular characterization of a third malic enzyme-like AP65 adhesin gene of Trichomonas vaginalis. Microb. pathog. 20:335-349.
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46. Ong, S. J., S. C. Huang, H. W. Liu, and J. H. Tai. 2004. Involvement of multiple DNA elements in iron-inducible transcription of the ap65-1 gene in the protozoan parasite Trichomonas vaginalis. Mol Microbiol. 52:1721-1730.
47. Ong, S. J., H. M. Hsu, H. W. Liu, C. H. Chu, and J. H. Tai. 2006. Multifarious Transcriptional Regulation of Adhesion Protein Gene ap65-1 by a Novel Myb1 Protein in the Protozoan Parasite Trichomonas vaginalis. Eukaryot. Cell 5:391–399.
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dc.identifier.urihttp://tdr.lib.ntu.edu.tw/jspui/handle/123456789/29734-
dc.description.abstract陰道滴蟲中附著蛋白質 ap65-1 基因之表現受到鐵離子與生長環境改變而影響。前人發現鐵能促進 Myb1之核輸送,以抑制受鐵誘發之 ap65-1 轉錄活性。
前人以大腸桿菌雙雜交系統(bacterioMatch Two-Hybrid System)篩選陰道滴蟲 cDNA 基因庫,得到一與 Myb1相互作用之蛋白質,CypA-1,此 cyclophilin-like protein 為脯氨酸異構脢(peptidyl prolyl cis-trans isomerase,PPIase)蛋白質家族中 cyclophilin (Cyp)一類。本研究以 GST-pull down 分析進一步證實,Myb1與 CypA-1為專一性作用。CypA-1 mRNA 表現量因高鐵處理而提高。利用酵素活性分析得知,CypA-1酵素活性 kcat/Km 為103 M-1S-1;而突變株 R63A 酵素活性 kcat/Km 為6×102 M-1S-1。由螢光免疫分析及西方轉漬法發現,CypA-1及 R63A 皆表現於陰道滴蟲細胞質中,而 R63A 的過度表現會減低 Myb1進入細胞核。經片段刪減及單點突變得知,Myb1與 CypA-1作用區域可能為104EYGPKWNKI112。配合 GST-pull down 分析發現,突變株 YGP105-107AAA 與 Myb1作用力減弱,指出 Y105-P107參與兩者間的作用。進一步將 Myb1及其突變株轉染於陰道滴蟲細胞中,發現 Myb1表現在細胞核中,突變株 P107A 聚集成顆粒於核膜附近,突變株 YGP105-107AAA 則表現於細胞質中。以 Cyclosporin A 處理轉染株 Myb1,發現 Myb1或聚集成顆粒或均勻散布在細胞質中,顯示 CypA-1與 Myb1之作用與 Myb1核輸送功能有關。
本研究證實 Myb1與 CypA-1間的交互作用,助於了解 Myb1蛋白質之生理功能,同時也提供了 Myb1於陰道滴蟲基因調控上ㄧ新的研究方向。
zh_TW
dc.description.abstractExpression of the adhesion protein ap65-1 gene in the human pathogen, Trichomonas vaginalis, is critically regulated by iron, which was shown to enhance the nuclear translocation of Myb1 that may inhibit iron-activated transcription of the ap65-1 gene.
In this study, bacterioMatch Two-Hybrid System (Stratagene) was applied to identify potential Myb1 interaction proteins. One of Myb1 interacting partner proteins was identified, and named CypA-1. CypA-1 is a cyclophilin-like protein, a family of highly conserved ubiquitous proteins in all the organisms. Specific interaction between CypA-1 and Myb1 was confirmed by the GST-pull down assay. CypA-1 mRNA level increased with iron treatment. Recombinant CypA-1 was assayed for cis-trans peptidyl-prolyl isomerase (PPIase) activity, and gave a value of kcat/Km 103 M-1S-1. R63A retained 60 % of the catalytic efficiency (kcat/Km) of wild-type recombinant CypA-1. Based on the immunofluorescence staining and Western blot assay, both CypA-1 and R63A were expressed in the cytoplasm. Expression of R63A inhibited the nuclear translocation of Myb1. The region of Myb1 interacting with CypA-1 was found to be E104-I112. YGP105-107AAA also interacted with CypA-1 with decreased activity as reveal by the GST-pull down assay. Based on the immunofluorescence staining, Myb1 expressed in the nucleus, P107A was accumulated close to the nuclear membrane, but YGP105-107AAA was evenly distributed in the cytoplasm. Results indicate the participation by Y105-P107 in the translocation of Myb1. Myb1 was either expressed as accumulated close to nuclear membrane, or in the cytoplasm by cyclosporin A treatment. These results provide a new aspect for investigation on the role of the Myb1 protein in transcription regulation of Trichomonas vaginalis.
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Previous issue date: 2007
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dc.description.tableofcontents目 錄
縮寫表 1
英文摘要 2
中文摘要 3
前言 4
ㄧ、陰道滴蟲之簡介 4
二、陰道滴蟲之附著機制 4
三、鐵離子與陰道滴蟲之關係 5
四、Myb 轉錄因子 6
五、Cyclophilin 蛋白質 7
材料與方法 10
ㄧ、陰道滴蟲蟲株的處理 10
二、轉殖質體之建構 12
三、大腸桿菌雙雜交系統 19
四、GST-pull down 分析 21
五、蛋白質聚丙烯醯胺膠體電泳 24
六、西方轉漬 24
七、免疫螢光染色 25
八、酵素活性分析 25
九、CypA-1之反轉錄聚合酵素鏈反應 26
結果 27
ㄧ、大腸桿菌雙雜交實驗之篩選結果 27
二、CypA-1之保守性 27
三、CypA-1 之表現與分布位置 29
四、CypA-1及 R63A 之酵素活性 30
五、Myb1與 CypA-1作用專一性 31
六、Myb1與 CypA-1之相互作用 32
討論 35
ㄧ、大腸桿菌雙雜交實驗結果分析 35
二、Myb1與 CypA-1專一性作用之分析 36
三、Myb1與 CypA-1作用區域及作用方式之分析 36
四、CypA-1之保守性及酵素活性 38
附表 40
附圖 45
參考文獻 85
附錄 93

表 目 錄
表一、實驗使用之專一性引子 40

圖 目 錄
圖一、pBTmyb 誘餌載體 45
圖二、以大腸桿菌雙雜交實驗篩選與特定 Myb 作用之蛋白質 47
圖三、不同物種間 cyclophilin 之序列保守性 49
圖四、陰道滴蟲中 cyclophilin之序列保守性 51
圖五、CypA-1 之立體結構圖 53
圖六、不同物種間 FHA domain 之序列保守性 55
圖七、不同物種間 PP1-1 之序列保守性 57
圖八、CypA-1於陰道滴蟲中之分布與表現 59
圖九、CypA-1對 Myb1表現之影響 61
圖十、FHA 在陰道滴蟲中之分布與表現 63
圖十一、His-CypA-1及其突變株 His-R63A 蛋白質表現及純化 65
圖十二、CypA-1及其突變株 R63A 之酵素活性 67
圖十三、以大腸桿菌雙雜交實驗探討 CypA-1或 CypA-2與 Myb 之作用 69
圖十四、GST-CypA-1蛋白質表現及純化 71
圖十五、特定 Myb重組蛋白質與 CypA-1於試管內之相互作用 73
圖十六、以大腸桿菌雙雜交實驗探討 CypA-1內與 Myb1作用區域 75
圖十七、Myb1 上與 CypA-1專一作用區域之鑑定 77
圖十八、Myb1重組蛋白質與 CypA-1結合區域之分析 79
圖十九、HA-Myb1上 CypA-1作用區之功能 81
圖二十、HA-Myb1轉染株經 CsA 作用之結果 83
dc.language.isozh-TW
dc.subject陰道滴蟲zh_TW
dc.subjectMyb1轉錄因子zh_TW
dc.subject脯氨酸異構脢zh_TW
dc.subject大腸桿菌雙雜交系統zh_TW
dc.subject酵素活性分析zh_TW
dc.subjectPeptidylprolyl cis-trans isomeraseen
dc.subjectMyb1en
dc.subjectTrichomonas vaginalisen
dc.subjectbacterial two hybriden
dc.subjectCyclophilin Aen
dc.title陰道滴蟲內 Myb1 與 Cyp A-1 蛋白質之交互作用zh_TW
dc.titleThe interaction of the Myb1 and CypA-1 proteins in Trichomonas vaginalisen
dc.typeThesis
dc.date.schoolyear95-2
dc.description.degree碩士
dc.contributor.advisor-orcid,戴榮湘(taijh@gate.sinica.edu.tw)
dc.contributor.oralexamcommittee許翠瑛(Tsui-Ying Hsu)
dc.subject.keyword陰道滴蟲,Myb1轉錄因子,脯氨酸異構脢,大腸桿菌雙雜交系統,酵素活性分析,zh_TW
dc.subject.keywordTrichomonas vaginalis,Myb1,Cyclophilin A,Peptidylprolyl cis-trans isomerase,bacterial two hybrid,en
dc.relation.page109
dc.rights.note有償授權
dc.date.accepted2007-07-19
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dc.contributor.author-dept微生物學研究所zh_TW
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