원문정보
Changes of Traf2 and SIRT1 Expression by AICAR and SIRT1 Activator in TNF-α -induced Cardiac Hypertrophy
초록
영어
[PURPOSE] The study was aimed to identify the effects of Traf2 and SIRT1 on Akt aceytlation and autophagy in cardiac hypertrophy. [METHODS] We analyzed the effects of diet and exercise intervention on cardiac hypertrophy and the underlying mechanisms of TNF-α/Traf2/SIRT1 through Akt-FOXO pathway. [RESULTS] A significant up-regulation of Traf2 expression and down-regulation of SIRT1 were observed as the increase of TNF-α in cardiomyocytes. By the significant deacetylation of FOXO1 in 50 μM resveratrol treated group, we can suppose that FOXO1 is activated by SIRT1 in cardiomyocytes. Positive effects of exercise intervention remarkably inhibited the up-regulation of Traf2 expression and Akt acetylation in cardiac hypertrophy. However we could not confirm either a higher depression in Akt acetylation or the activation of FOXO1 by the SIRT1 activation. [CONCLUSION] The present study demonstrated that Traf2 served as an important mediator that enhanced cardiac hypertrophy by activating AKT pathway, and the positive effects of exercise training on the inhibition of Traf2 in cardiac hypertrophy.
목차
서론
연구방법
세포배양
SIRT1 construct 및 세포내 과발현
Western blot
자료처리
결과
TNF-α/Traf2/SIRT1을 통한 심장비대
Akt와 FOXO1에 대한 SIRT1의 역할
TNF-α에 의해 유도된 심장비대 개선을 위한 식이조절과 운동의 효과검증
논의
결론
참고문헌