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2022 Fiscal Year Final Research Report

Elucidation of the molecular mechanisms responsible for the recent increase in DKD

Research Project

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Project/Area Number 20K08593
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53040:Nephrology-related
Research InstitutionThe University of Tokushima

Principal Investigator

TOMINAGA Tatsuya  徳島大学, 大学院医歯薬学研究部(医学域), 准教授 (80425446)

Co-Investigator(Kenkyū-buntansha) 安部 秀斉  徳島大学, 大学院医歯薬学研究部(医学域), 准教授 (60399342)
田蒔 昌憲  徳島大学, 病院, 講師 (90528902)
長井 幸二郎  徳島大学, 病院, 講師 (40542048)
Project Period (FY) 2020-04-01 – 2023-03-31
Keywords腎硬化症 / DKD / BMP4 / ERR
Outline of Final Research Achievements

BMP4 is a factor that induces apoptosis of podocytes and at the same time induces mesangial matrix proliferation, leading to renal injury. Women are more likely to develop atherosclerosis after menopause because of the strong association between nuclear receptors, such as estrogen receptors, and atherosclerosis. The BMP2/4 that acts to induce aortic calcification is modulated by the nuclear receptor, Estrogen Related Receptor (ERR). Ligand substances that act on nuclear receptors are expected to be therapeutic agents for DKD, including nephrosclerosis. Based on these reports, we investigated the detailed molecular mechanisms of ERR and BMP4 in atherosclerotic kidney damage including nephrosclerosis, and studied the effects of low molecular weight compounds on the inhibition of nephropathy.

Free Research Field

腎臓

Academic Significance and Societal Importance of the Research Achievements

糖尿病性腎症の主たる病変であるメサンギウム基質増加がBMP4/Smad1シグナル系によって惹起される。糸球体硬化病変の本態は、メサンギウム基質の増生、ポドサイト喪失、糸球体血管内皮の透過性亢進であり、単独で起こるものではない。各細胞で連鎖的に起こる障害と他細胞へ波及するメカニズムを総合的に分析し、病態を把握することが治療薬開発の土台になる。本研究は、実際の臨床上の未解決な問題に対して、腎硬化症への特異性を追求するため、血圧以外の病態発症メカニズムの検証を行い、腎機能低下に直結する分子の同定と、分子標的治療の開発へと新規分野を開拓するものであり、病態の理解にも、実臨床上も意義が大きい。

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Published: 2024-01-30  

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