ヤマウチ　アキラ   Akira Yamauchi   山内　明    所属   川崎医科大学  医学部 基礎医学　生化学    職種   教授
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Dissection of the signal transduction machinery responsible for the lysyl oxidase-like 4-mediated increase in invasive motility in triple-negative breast cancer cells: mechanistic insight into the integrin-β1-NF-κB-MMP9 axis
掲載誌名	正式名：Frontiers in Oncology 略　 称：Front Oncol
掲載区分	国外
出版社	Frontiers Media SA
総ページ数	13
国際共著	国際共著
著者・共著者	Fan Jiang, Youyi Chen, Nahoko Tomonobu, Rie Kinoshita, Ni Luh Gede Yoni Komalasari, Carlos Ichiro Kasano-Camones, Kazumi Ninomiya, Hitoshi Murata, Ken-ichi Yamamoto, Yuma Gohara, Toshiki Ochi, I Made Winarsa Ruma, I Wayan Sumardika, Jin Zhou, Tomoko Honjo, Yoshihiko Sakaguchi, Akira Yamauchi, Futoshi Kuribayashi, Junichiro Futami, Eisaku Kondo, Yusuke Inoue, Shinichi Toyooka, Masakiyo Sakaguchi
発行年月	2024/05/28
概要	Background: Triple-negative breast cancer (TNBC) cells are a highly formidable cancer to treat. Nonetheless, by continued investigation into the molecular biology underlying the complex regulation of TNBC cell activity, vulnerabilities can be exposed as potential therapeutic targets at the molecular level. We previously revealed that lysyl oxidase-like 4 (LOXL4) promotes the invasiveness of TNBC cells via cell surface annexin A2 as a novel binding substrate of LOXL4, which promotes the abundant localization of integrin-β1 at the cancer plasma membrane. However, it has yet to be uncovered how the LOXL4-mediated abundance of integrin-β1 hastens the invasive outgrowth of TNBC cells at the molecular level. Methods: LOXL4-overexpressing stable clones were established from MDA-MB-231 cells and subjected to molecular analyses, real-time qPCR and zymography to clarify their invasiveness, signal transduction, and matrix metalloprotease (MMP) activity, respectively. Results: Our results show that LOXL4 potently promotes the induction of matrix metalloprotease 9 (MMP9) via activation of nuclear factor-κB (NF-κB). Our molecular analysis revealed that TNF receptor-associated factor 4 (TRAF4) and TGF-β activated kinase 1 (TAK1) were required for the activation of NF-κB through Iκβ kinase kinase (IKKα/β) phosphorylation. Conclusion: Our results demonstrate that the newly identified LOXL4-mediated axis, integrin-β1-TRAF4-TAK1-IKKα/β-Iκβα-NF-κB-MMP9, is crucial for TNBC cell invasiveness.
DOI	10.3389/fonc.2024.1371307
PMID	38863623
researchmap用URL	https://doi.org/10.3389/fonc.2024.1371307