• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2023 Fiscal Year Final Research Report

The mechanisms of RANKL-induced severe pneumonia

Research Project

  • PDF
Project/Area Number 21K08207
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53030:Respiratory medicine-related
Research InstitutionSapporo Medical University

Principal Investigator

HASEGAWA YOSHIHIRO  札幌医科大学, 医学部, 講師 (90643180)

Project Period (FY) 2021-04-01 – 2024-03-31
KeywordsRANKL / 破骨細胞 / 肺胞マクロファージ / 呼吸器感染症 / ARDS
Outline of Final Research Achievements

Osteoclasts are multinucleated giant cells responsible for bone resorption that are induced to differentiate by RANKL. We have previously reported that osteoclast-like multinucleated giant cells are induced to differentiate in a RANKL-dependent manner in the lungs of a silicosis lung model mouse, contributing to the formation of pulmonary fibrosis. In this study, we aimed to show that RANKL expression is also induced in the lungs of respiratory infections and contributes to the severity of inflammation, and that RANKL is a therapeutic target. We showed that RANKL expression is also increased in the lungs of mouse models of pulmonary histoplasmosis. Furthermore, we showed that inhibition of RANKL suppresses inflammation in the lungs.

Free Research Field

呼吸器内科

Academic Significance and Societal Importance of the Research Achievements

本研究は、単球・マクロファージ系前駆細胞の分化を決定するサイトカインであるRANKLが、肺に存在することを見出した知見を発展させるものである。RANKLの阻害により、呼吸器の防御機構の主役である肺胞マクロファージへの分化を誘導するというのは新しい概念はと言える。抗RANKL抗体は、骨粗鬆症の患者に対する使用実績から、安全性に問題がないことが証明されている。本研究では、抗RANKL抗体を肺胞マクロファージへの分化を促す目的で用いるが、呼吸器感染症における治療効果を個体レベルで示すことができれば、速やかに臨床応用できることが期待できる。

URL: 

Published: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi