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2021 Fiscal Year Final Research Report

Examination of the role of CRTC, a CREB coactivator, on arteriosclerosis

Research Project

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Project/Area Number 19K09029
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54040:Metabolism and endocrinology-related
Research InstitutionKumamoto University

Principal Investigator

Igata Motoyuki  熊本大学, 病院, 助教 (40599099)

Co-Investigator(Kenkyū-buntansha) 荒木 栄一  熊本大学, 大学院生命科学研究部(医), 教授 (10253733)
本島 寛之  熊本大学, 大学院生命科学研究部(医), 特任准教授 (40398201)
Project Period (FY) 2019-04-01 – 2022-03-31
Keywords動脈硬化症 / CRTC
Outline of Final Research Achievements

We examined the role of CRTC, a CREB coactivator, on arteriosclerosis. We confirmed expression of CREB / CRTC2 in vascular smooth muscle cells and CRTC2 activation by forskolin. Forskolin inhibited serum-induced proliferation and migration of vascular smooth muscle cells. We focused on CYR61, which is a CREB target gene and angiogenic immediate early gene. Forskolin suppressed CRTC2-dependent CYR61 expression via SIK2 inhibition. CRTC2 suppressed CYR61 expression in a CREB-independent manner and also suppressed CYR61 in the absence of forskolin. CRTC2 was shown not only to activate gene expression as a CREB co-activator, but also to suppress gene expression independently of CREB.

Free Research Field

糖尿病、動脈硬化

Academic Significance and Societal Importance of the Research Achievements

全世界における肥満、メタボリックシンドローム人口の増加は動脈硬化性疾患の発症の増加につながる。動脈硬化症発症・進展の機序を解明することは人類の健康寿命延長に大きく寄与することが想定される。これまで転写因子CREBの動脈硬化症における役割は明らかでなく、動脈硬化進展、動脈硬化抑制の両者への関与が報告されていた。今回の研究ではCREBの共役因子として知られるCRTCの動脈硬化症への関与と、そのCREB非依存的な作用を明らかにし、動脈硬化症におけるCREBの相反する作用を説明できる可能性をもたらした。

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Published: 2023-01-30  

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