Clonal hematopoiesis-related mutant ASXL1 promotes atherosclerosis in mice via dysregulated innate immunity

IF 9.4 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS
Naru Sato, Susumu Goyama, Yu-Hsuan Chang, Masashi Miyawaki, Takeshi Fujino, Shuhei Koide, Tamami Denda, Xiaoxiao Liu, Koji Ueda, Keita Yamamoto, Shuhei Asada, Reina Takeda, Taishi Yonezawa, Yosuke Tanaka, Hiroaki Honda, Yasunori Ota, Takuma Shibata, Motohiro Sekiya, Tomoya Isobe, Chrystelle Lamagna, Esteban Masuda, Atsushi Iwama, Hitoshi Shimano, Jun-ichiro Inoue, Kensuke Miyake, Toshio Kitamura
{"title":"Clonal hematopoiesis-related mutant ASXL1 promotes atherosclerosis in mice via dysregulated innate immunity","authors":"Naru Sato, Susumu Goyama, Yu-Hsuan Chang, Masashi Miyawaki, Takeshi Fujino, Shuhei Koide, Tamami Denda, Xiaoxiao Liu, Koji Ueda, Keita Yamamoto, Shuhei Asada, Reina Takeda, Taishi Yonezawa, Yosuke Tanaka, Hiroaki Honda, Yasunori Ota, Takuma Shibata, Motohiro Sekiya, Tomoya Isobe, Chrystelle Lamagna, Esteban Masuda, Atsushi Iwama, Hitoshi Shimano, Jun-ichiro Inoue, Kensuke Miyake, Toshio Kitamura","doi":"10.1038/s44161-024-00579-w","DOIUrl":null,"url":null,"abstract":"Certain somatic mutations provide a fitness advantage to hematopoietic stem cells and lead to clonal expansion of mutant blood cells, known as clonal hematopoiesis (CH). Among the most common CH mutations, ASXL1 mutations pose the highest risk for cardiovascular diseases (CVDs), yet the mechanisms by which they contribute to CVDs are unclear. Here we show that hematopoietic cells harboring C-terminally truncated ASXL1 mutant (ASXL1-MT) accelerate the development of atherosclerosis in Ldlr–/– mice. Transcriptome analyses of plaque cells showed that monocytes and macrophages expressing ASXL1-MT exhibit inflammatory signatures. Mechanistically, we demonstrate that wild-type ASXL1 has an unexpected non-epigenetic role by suppressing innate immune signaling through the inhibition of IRAK1–TAK1 interaction in the cytoplasm. This regulatory function is lost in ASXL1-MT, resulting in NF-κB activation. Inhibition of IRAK1/4 alleviated atherosclerosis driven by ASXL1-MT and decreased inflammatory monocytes. The present work provides a mechanistic and cellular explanation linking ASXL1 mutations, CH and CVDs. Somatic mutations in ASXL1 lead to clonal hematopoiesis, and Sato et al. elucidate the molecular mechanisms by which mutated ASXL1 in hematopoietic cells drives atherosclerosis in mice.","PeriodicalId":74245,"journal":{"name":"Nature cardiovascular research","volume":"3 12","pages":"1568-1583"},"PeriodicalIF":9.4000,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature cardiovascular research","FirstCategoryId":"1085","ListUrlMain":"https://www.nature.com/articles/s44161-024-00579-w","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CARDIAC & CARDIOVASCULAR SYSTEMS","Score":null,"Total":0}
引用次数: 0

Abstract

Certain somatic mutations provide a fitness advantage to hematopoietic stem cells and lead to clonal expansion of mutant blood cells, known as clonal hematopoiesis (CH). Among the most common CH mutations, ASXL1 mutations pose the highest risk for cardiovascular diseases (CVDs), yet the mechanisms by which they contribute to CVDs are unclear. Here we show that hematopoietic cells harboring C-terminally truncated ASXL1 mutant (ASXL1-MT) accelerate the development of atherosclerosis in Ldlr–/– mice. Transcriptome analyses of plaque cells showed that monocytes and macrophages expressing ASXL1-MT exhibit inflammatory signatures. Mechanistically, we demonstrate that wild-type ASXL1 has an unexpected non-epigenetic role by suppressing innate immune signaling through the inhibition of IRAK1–TAK1 interaction in the cytoplasm. This regulatory function is lost in ASXL1-MT, resulting in NF-κB activation. Inhibition of IRAK1/4 alleviated atherosclerosis driven by ASXL1-MT and decreased inflammatory monocytes. The present work provides a mechanistic and cellular explanation linking ASXL1 mutations, CH and CVDs. Somatic mutations in ASXL1 lead to clonal hematopoiesis, and Sato et al. elucidate the molecular mechanisms by which mutated ASXL1 in hematopoietic cells drives atherosclerosis in mice.

Abstract Image

求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
5.70
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信