ナカノ ヒロヤス   Nakano Hiroyasu
  中野 裕康
   所属   東邦大学  医学部 医学科
   東邦大学  医学部 医学科
   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 Disruption of tumor necrosis factor receptor associated factor 5 exacerbates pressure overload cardiac hypertrophy and fibrosis
掲載誌名 正式名:Journal of Cellular Biochemistry
略  称:J Cell Biochem
ISSNコード:1097-4644 (Electronic) 0730-2312 (Linking
出版社 Wiley Periodicals, Inc.
巻・号・頁 115(2),349-358頁
著者・共著者 Bian, Z.
Dai, J.
Nakano, H.
Guan, H.
Yuan, Y.
Gan, L.
Zhou, H.
Zong, J.
Zhang, Y.
Li, F.
Yan, L.
Shen, D.
Li, H.
Tang, Q.
発行年月 2014/02
概要 The cytoplasmic signaling protein tumor necrosis factor (TNF) receptor-associated factor 5 (TRAF5), which was identified as a signal transducer for members of the TNF receptor super-family, has been implicated in several biological functions in T/B lymphocytes and the innate immune response against viral infection. However, the role of TRAF5 in cardiac hypertrophy has not been reported. In the present study, we investigated the effect of TRAF5 on the development of pathological cardiac hypertrophy induced by transthoracic aorta constriction (TAC) and further explored the underlying molecular mechanisms. Cardiac hypertrophy and function were evaluated with echocardiography, hemodynamic measurements, pathological and molecular analyses. For the first time, we found that TRAF5 deficiency substantially aggravated cardiac hypertrophy, cardiac dysfunction and fibrosis in response to pressure overload after 4 weeks of TAC compared to wild-type (WT) mice. Moreover, the mitogen-activated protein/extracellular signal-regulated kinase kinase (MEK)-extracellular signal-regulated kinases 1/2 (ERK1/2) signaling pathway was more activated in TRAF5-deficient mice than WT mice. In conclusion, our results suggest that as an intrinsic cardioprotective factor, TRAF5 plays a crucial role in the development of cardiac hypertrophy through the negative regulation of the MEK-ERK1/2 pathway.
DOI 10.1002/jcb.24669