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  1. NTU Theses and Dissertations Repository
  2. 公共衛生學院
  3. 流行病學與預防醫學研究所
請用此 Handle URI 來引用此文件: http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/50863
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dc.contributor.advisor蕭朱杏(Chuhsing Kate Hsiao)
dc.contributor.authorChang-Xian Sheen
dc.contributor.author佘昌憲zh_TW
dc.date.accessioned2021-06-15T13:02:59Z-
dc.date.available2016-08-26
dc.date.copyright2016-08-26
dc.date.issued2016
dc.date.submitted2016-07-07
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dc.identifier.urihttp://tdr.lib.ntu.edu.tw/jspui/handle/123456789/50863-
dc.description.abstract隨著生物技術的快速發展,越來越多的多基因平台資料(multi-platform genetic data)使得研究人員得以進行多平台的整合分析(integrative analysis)。然而,困難的是如何處理不同平台基因標記物(markers)資料間的關係、以及同一平台內標記物之間的相關性。另外,在關聯性研究中,以基因集合進行的遺傳分析已證實能夠比單一基因檢定(single-marker tests)方法有更高的檢定力(power),因此,如何在整合分析中納入基因集合是目前關鍵的議題。本論文提出一個基於生物路徑的貝氏整合分析模型(Pathway-based Bayesian integrative analysis model, PaBIA model)來整合基因表現量與DNA甲基化兩種平台的資料,同時將生物路徑拓樸(pathway topology-based) 的概念納入模型中。透過後驗分佈的推論,可以在給定的生物路徑中偵測出有影響的基因,並且將他們的重要性進行排序。在模擬研究中,相較於傳統方法,這個PaBIA模型有較低的錯誤發現率(false discovery proportion),及較高的真陰性率(true negative rate),但是在(真陽性率+真陰性率)/2上則較傳統方法略差不到2%。最後,我們使用高程度乳腺管原位癌(high-grade ductal carcinoma in situ)的次世代定序資料以及卵巢癌的微陣列基因資料,透過分析KEGG的多個生物路徑來示範這個統計模型。實際資料分析中被PaBIA排為前幾名重要的基因都曾被文獻報導過與乳癌及卵巢癌的相關性,而且,某些基因已被做為治療乳癌或其他癌症的標靶基因。zh_TW
dc.description.abstractThe rapid advancement in biotechnology has made the genetic data from multiple platforms accessible for scientists to perform integrative analysis. Challenges arise, however, in dealing with the relationship between data from different sources, as well as the correlation between markers from the same platform. For statistical analysis, current set-based genetic analysis has been shown to exert more statistical power than single marker tests in association studies. Therefore, the incorporation of gene-sets into the integrative analysis has become a critical issue. In this thesis we propose a Pathway-based Bayesian integrative analysis (PaBIA) model to integrate RNA expression and DNA methylation data, simultaneously incorporating the concept of pathway topology to model the relationship between marker values. Based on the posterior inference, influential genes in given pathways can be identified and ranked. Simulation studies confirmed that the proposed model performed better than other traditional approaches, in terms of false discovery proportion and true negative rate. The (true positive rate +true negative rate)/2 of PaBIA is smaller than that of other methods by less than 2%. Finally, we illustrate this approach with a high-grade ductal carcinoma in situ study, and an ovarian cancer study, with KEGG pathways. The top ranking genes have been reported in previous literature to associate with breast cancer or ovarian cancer, and some have even been applied in target therapy.en
dc.description.provenanceMade available in DSpace on 2021-06-15T13:02:59Z (GMT). No. of bitstreams: 1
ntu-105-R03849033-1.pdf: 2040724 bytes, checksum: 3a502ac232815ee3b011e4b5a2e08679 (MD5)
Previous issue date: 2016
en
dc.description.tableofcontents第一章、 研究背景 1
第二章、 方法 4
第一節 符號與模式 4
第二節 計算與推論 6
第三節 資料處理及訊息模式設定 6
節點的設定 6
連結的設定 7
第三章、 模擬 8
第一節 設定 8
第二節 結果 10
第四章、 乳癌研究應用 11
第一節 背景與資料處理 11
正規化(Normalization) 11
離群值偵測(Outlier detection) 12
第三節 結果 12
Hyaluronan 13
Estrogen signaling pathway 14
MTOR pathway 14
第五章、 卵巢癌研究應用 17
第一節 資料背景 17
第二節 結果 17
Cell cycle、p53、mTOR、PI3K-Akt pathway 17
第六章、 討論 19
第七章、 參考文獻 22
dc.language.isozh-TW
dc.subject基因表現zh_TW
dc.subject基因排序zh_TW
dc.subject基因表現zh_TW
dc.subjectDNA甲基化zh_TW
dc.subject貝氏模型zh_TW
dc.subject基因排序zh_TW
dc.subject整合分析zh_TW
dc.subject次世代定序zh_TW
dc.subject貝氏模型zh_TW
dc.subject生物路徑zh_TW
dc.subjectDNA甲基化zh_TW
dc.subject生物路徑zh_TW
dc.subject次世代定序zh_TW
dc.subject整合分析zh_TW
dc.subjectgene rankingen
dc.subjectBayesian modelen
dc.subjectDNA methylationen
dc.subjectgene expressionen
dc.subjectintegrative analysisen
dc.subjectnext generation sequencingen
dc.subjectpathwaysen
dc.subjectBayesian modelen
dc.subjectDNA methylationen
dc.subjectgene expressionen
dc.subjectgene rankingen
dc.subjectintegrative analysisen
dc.subjectnext generation sequencingen
dc.subjectpathwaysen
dc.title利用貝氏統計模式進行生物路徑之整合相關性研究分析zh_TW
dc.titlePathway-based Bayesian integrative analysis for genetic association studiesen
dc.typeThesis
dc.date.schoolyear104-2
dc.description.degree碩士
dc.contributor.oralexamcommittee盧子彬,楊欣洲,蔡政安
dc.subject.keyword貝氏模型,DNA甲基化,基因表現,基因排序,整合分析,次世代定序,生物路徑,zh_TW
dc.subject.keywordBayesian model,DNA methylation,gene expression,gene ranking,integrative analysis,next generation sequencing,pathways,en
dc.relation.page74
dc.identifier.doi10.6342/NTU201600753
dc.rights.note有償授權
dc.date.accepted2016-07-07
dc.contributor.author-college公共衛生學院zh_TW
dc.contributor.author-dept流行病學與預防醫學研究所zh_TW
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