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2018 Fiscal Year Final Research Report

Podocyte-tubular epithelial cell interaction plays a role to prevent tubular injury

Research Project

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Project/Area Number 15H04836
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Kidney internal medicine
Research InstitutionUniversity of Fukui

Principal Investigator

Iwano Masayuki  福井大学, 学術研究院医学系部門, 教授 (20275324)

Co-Investigator(Kenkyū-buntansha) 松阪 泰二  東海大学, 医学部, 教授 (50317749)
栗原 秀剛  藍野大学, 医療保健学部, 教授 (80311976)
Project Period (FY) 2015-04-01 – 2019-03-31
KeywordsFSP1 / ポドサイト / 尿細管上皮細胞 / Nrf2 / 抗酸化作用 / 急性腎障害
Outline of Final Research Achievements

In human active glomerulonephritis, fibroblast specific protein 1 (FSP1) was highly expressed in podocytes. In this study, we investigated biological effects of FSP1 which can be excreted from podocytes in vitro and in vivo. Recombinant FSP1 (rFSP1) induced HO-1, SOD, and thioredoxin expression in tubular epithelial cells (TEC) via Nrf2 activation and rFSP1 exerted antioxidant effects and anti-apoptotic effects on TEC. rFSP1 could ameliorate acute tubular injury in cisplatin nephrotoxicity. In transgenic mice in which FSP1 was specifically expressed in podocytes, tubular injury in cisplatin nephrotoxicity was also ameliorated, which suggests podocyte-TEC interaction.

Free Research Field

腎臓内科

Academic Significance and Societal Importance of the Research Achievements

AKIは生命予後を著明に低下させる重要な病態である。しかし現在のところAKIに対する有効な予防薬および治療薬が存在しないため、世界中で精力的に研究が行われている。分泌型FSP1は、抗炎症作用、抗アポトーシス作用および抗酸化作用を併せ持つことから、AKI新規治療薬として有望である。増加の一途を辿る透析患者数に歯止めをかけるために、腎臓病領域における新薬開発は喫緊の課題である。本研究は、創薬に直結する意義深いものである。

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Published: 2020-03-30  

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