Secreted frizzled related protein 1 protects H9C2 cells from hypoxia/re-oxygenation injury by blocking the Wnt signaling pathway

Lipids in Health and Disease

Research

Xiao-mei Li¹  Yi-ning Yang¹  Yi-tong Ma²  Jing Tao³  Mayila Abudoukelimu³  Chun-hui He³  Hua-yin Li³  Bang-dang Chen⁴  Fen Liu⁴ 

[1] Department of Cardiology, the First Affiliated Hospital of Xinjiang Medical University, Li Yu Shan South Road 137, 830001, Urumqi, People’s Republic of China;Department of Cardiology, the First Affiliated Hospital of Xinjiang Medical University, Li Yu Shan South Road 137, 830001, Urumqi, People’s Republic of China;Xinjiang Key Laboratory of Cardiovascular Disease Research, Li Yu Shan South Road 137, 830001, Urumqi, People’s Republic of China;Xinjiang Medical University, Li Yu Shan South Road 137, 830001, Urumqi, People’s Republic of China;Department of Cardiology, the First Affiliated Hospital of Xinjiang Medical University, Li Yu Shan South Road 137, 830001, Urumqi, People’s Republic of China;Xinjiang Medical University, Li Yu Shan South Road 137, 830001, Urumqi, People’s Republic of China;Xinjiang Key Laboratory of Cardiovascular Disease Research, Li Yu Shan South Road 137, 830001, Urumqi, People’s Republic of China;

关键词: H9C2;    Sfrp1;    Wnt signaling pathway;    Apoptosis;    Hypoxia reoxygenation injury;   

DOI  :  10.1186/s12944-016-0240-5

 received in 2016-01-25, accepted in 2016-03-30,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundIn animal models, secreted frizzled related protein 1 (Sfrp1) inhibition of the Wnt signaling pathway is beneficial because Sfrp1 reduces myocardial apoptosis and prevents heart failure. The mechanisms mediating the cellular survival effect of Sfrp1 has not been completely elucidated. The present study was designed to investigate the possible protective actions of Sfrp1 on cardiac muscle cells using an in vitro model of ischemia/reperfusion, and to evaluate the possible involvement of the Wnt signaling pathway.MethodsWe used a recombinant AAV9 vector to deliver the Sfrp1 gene into H9C2 rat cardiomyoblasts and adopted an in vitro model of ischemia/reperfusion. Cell vitality was measured by CKK-8 and the trypan blue exclusion assay. Western blot was used to evaluate the expression of Dvl-1, β-catenin, c-Myc, Bax, and Bcl-2. Flow cytometry analysis of cardiomyocyte apoptosis was performed.ResultsWe confirmed that Sfrp1 significantly increased cell viability (assayed by trypan blue and CKK-8) and decreased apoptosis (assayed by flow cytometry analysis and the Bax/Bcl-2 ratio). These effects were partly attributable to the ability of Sfrp1 to down-regulate Wnt signaling pathway (assayed by Western blot to evaluate the expression of Dvl-1, β-catenin, and c-Myc). Indeed, reactivation of the Wnt signaling pathway activity with the specific activator, Licl, reduced Sfrp1-induced cardioprotection during hypoxia and reoxygenation.ConclusionsThe present study demonstrated that Sfrp1 directly protected H9C2 cells from hypoxia and reoxygenation-induced reperfusion injury and apoptosis through inhibition of the Wnt signaling pathway, and added new mechanistic insight regarding the cardioprotective role of Sfrp1 on ischemic damage.

【 授权许可】

CC BY   
© Tao et al. 2016