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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 蕭信宏 | |
dc.contributor.author | Ching-I Chen | en |
dc.contributor.author | 陳敬宜 | zh_TW |
dc.date.accessioned | 2021-06-16T10:48:38Z | - |
dc.date.available | 2018-09-24 | |
dc.date.copyright | 2013-09-24 | |
dc.date.issued | 2013 | |
dc.date.submitted | 2013-08-12 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/61136 | - |
dc.description.abstract | 病媒蚊傳播的寄生蟲或病毒性疾病,如瘧疾、登革熱、黃熱病…等,每年皆造成上億的病例,超過百萬人死亡。但目前針對這些傳染性疾病大多缺乏有效的疫苗,此外,有些流行地區的瘧原蟲已對抗瘧疾藥物產生抗藥性;因此,許多研究團隊開始思考藉由控制病媒蚊的傳病能力,以達到控制疾病的目的。其中,藉由生物防治的方式來達到降低病媒蚊的族群數量,被認為是一個可行的替代性策略。過去的研究已證實Wnt signaling pathway參與果蠅的胚胎發育與細胞極性調控,但在埃及斑蚊中對Wnt signaling pathway的研究卻付之闕如,因此我們亟欲探討Wnt signaling pathway於埃及斑蚊中是否在生長發育上也扮演重要角色。本實驗室過去利用RNAi的方式,分別抑制埃及斑蚊中Frizzle2 (Wnt的受體)與Wnt740 (Fz的配體)的表現,發現吸血後的母蚊相較於對照組,其產下的卵數大幅減少。此外我們也發現,在蛹期抑制AaWnt740的表現時,其羽化的比例也明顯降低。並且在我們的實驗當中,觀察到母蚊在羽化過程中無法完全羽化(Incomplete eclosion)。我們更進一步證明,此種羽化不完全的現象是由非典型的Wnt signaling pathway,即planar cell polarity (PCP) pathway所調控。本研究結果將有助於未來發展新的病媒控制策略,以控制病媒傳染病之傳播。 | zh_TW |
dc.description.abstract | Mosquito-borne diseases are the most devastating agents for human beings, such as malaria, dengue fever, West Nile fever…etc. The WHO reported that some 2.5 billion people are now at risk and more than a million people are killed by mosquito-borne diseases annually. Up to now, no effective vaccine or drug has been developed for most of these diseases. Therefore, any possible avenue for developing novel control strategies against mosquito-borne diseases is urgently needed. Wnt signaling pathway is shown to be participated in the embryonic development and cell polarity in Drosophila. However, the functions of Wnt signaling remain largely unknown in the mosquito. In this study, we attempt to characterize the role of Wnt signaling in the yellow fever mosquito, Aedes aegypti. Our previous results showed that silencing of Frizzl2 (the Wnt signaling pathway receptor) and Wnt (the Wnt signaling pathway ligand) resulted in the reduction of eggs production. Interestingly, silencing of Wnt reduced the eclosion rate in the mosquito. Therefore, we would like to elucidate the role of Wnt in the regulation of mosquito morphogenesis, which will be crucial for the development of novel vector control strategy. Our results showed that Wnt was highly expressed in the mosquito pupal stage in terms of transcriptional level. Intriguingly, we observed that silencing of Wnt740 exhibited an incomplete eclosion phenotype in the mosquito pupae. Furthermore, we demonstrated that this phenotype was regulated by planar cell polarity (PCP) pathway, the non-canonical Wnt signaling pathway. Information gathered in this study will pave the way toward the establishment of efficient strategies for vector control by using molecular engineering approaches. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T10:48:38Z (GMT). No. of bitstreams: 1 ntu-102-R00445202-1.pdf: 2306488 bytes, checksum: 6b7977dd7f0badffc8a7190328b7ccef (MD5) Previous issue date: 2013 | en |
dc.description.tableofcontents | 誌謝 i
中文摘要 ii Abstract iii 目錄 iv 圖目錄 vi 第一章、緒論 1 1.1. 病媒蚊傳播疾病 (Mosquito-borne diseases) 1 1.1.1. 登革熱 2 1.1.2. 瘧疾 3 1.2. 蚊子的生活史 (Mosquito life cycle) 4 1.3. 蚊子的卵黃生成機制 (Mosquito vitellogenesis) 5 1.4. Wnt signaling pathway 6 1.5. 實驗動機與假說 8 第二章、材料與方法 9 2.1. 實驗步驟與流程 9 2.1.1. 埃及斑蚊的飼養 9 2.1.2. 餵血 9 2.1.3. 演化樹分析 10 2.1.4. 胺基酸序列比對 10 2.1.5. RNA萃取 10 2.1.6. 反轉錄(Reverse Transcription;RT) 11 2.1.7. 聚合酶鏈鎖反應(Polymerase chain reaction;PCR) 11 2.1.8. RNA干擾作用(RNA interference;RNAi) 11 2.1.8.1. 質體建構(Plasmid construct) 11 2.1.8.2. 雙股RNA製備(Double stranded RNA;dsRNA) 12 2.1.9. 抑制成效的確認 (Knockdown efficiency) 13 2.1.10. 產卵率實驗 14 2.1.11. 羽化率實驗 14 2.1.12. 羽化不完全現象與比例 15 2.1.13. 西方點墨法 (Western blot) 15 2.2. 使用之試劑及配置方式 17 第三章、結果 20 3.1. Wnt family genes 之演化樹(phylogenetic tree)分析 20 3.2. 埃及斑蚊Wnts的胺基酸序列比對 20 3.3. 埃及斑蚊Wnts於不同發育時期之 mRNA表現 21 3.4. 抑制埃及斑蚊 Wnt740時羽化不完全現象 21 3.5. 抑制埃及斑蚊 Wnt740時羽化不完全母蚊之比例 22 3.6. 埃及斑蚊MAP、Tensin、Sens、DLL於不同發育時期之 mRNA表現及其受Wnt740之影響 22 3.7. 羽化不完全現象與Canonical Wnt pathway之調控關係 23 3.8. 羽化不完全現象與 Wnt/Calcium (Ca2+) pathway之調控關係 23 3.9. 羽化不完全現象與planar cell polarity(PCP)pathway之調控關係 24 3.10. 抑制埃及斑蚊JNK誘導羽化不完全現象 24 第四章、討論 26 圖表(Figures) 30 附錄 49 參考文獻 51 | |
dc.language.iso | zh-TW | |
dc.title | Wnt參與埃及斑蚊變態過程之探討 | zh_TW |
dc.title | Wnt is essential for the morphogenesis in the mosquito Aedes aegypti | en |
dc.type | Thesis | |
dc.date.schoolyear | 101-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 詹智強,吳君泰 | |
dc.subject.keyword | 埃及斑蚊,Wnt740,Wnt signaling pathway,JNK,羽化不完全, | zh_TW |
dc.subject.keyword | Aedes aegypti,Wnt740,Wnt signaling pathway,JNK,Incomplete eclosion, | en |
dc.relation.page | 55 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2013-08-12 | |
dc.contributor.author-college | 醫學院 | zh_TW |
dc.contributor.author-dept | 微生物學研究所 | zh_TW |
顯示於系所單位: | 微生物學科所 |
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