2021 Fiscal Year Final Research Report
Molecular analysis in the malignant progression of IPMN
Project/Area Number |
19K08387
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 53010:Gastroenterology-related
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Research Institution | The University of Tokyo |
Principal Investigator |
Tada Minoru 東京大学, 医学部附属病院, 届出研究員 (80302719)
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Co-Investigator(Kenkyū-buntansha) |
立石 敬介 東京大学, 医学部附属病院, 講師 (20396948)
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Keywords | 膵癌 |
Outline of Final Research Achievements |
This research analyzed epigenetic profiles among the different grades of IPMN related tissues, including low grade, high grade, and invasive cancers. The levels of 5-mC and 5-hmC were decreased through the malignant progression of IPMN related lesions, which indicated a pivotal role of DNA methylation in the IPMN tumorigenesis. In addition, the expression of epigenome related genes including NMT1, DNMT3A DNMT3B, TET1, TET2, TET3 were analyzed among the groups. This research proposed a possibility that the alteration of epigenome is a significant mechanism in the progression of IPMN carcinogenesis.
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Free Research Field |
消化器内科学、膵臓病学
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Academic Significance and Societal Importance of the Research Achievements |
膵嚢胞性腫瘍であるIPMNが年率0.6%と一般の20倍と高い発癌リスクを有する膵癌高危険群であることを報告した。IPMNに関連する膵発癌様式にはIPMN上皮が局所で悪性転化し浸潤癌化するIPMN由来浸潤癌と、IPMNとは別の場所の膵内に通常型膵癌と同様の浸潤癌を形成するIPMN併存膵癌がある。IPMNが通常型膵癌とは異なる分子学的背景を持つかどうかはいまだ十分明らかではない。本研究では、IPMNに関連する2通りの膵発癌様式にとって重要であり、かつ各々を層別化しうるエピゲノム制御プロファイルを検討した点で意義がある。
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