Upregulation of IGF-IIRα intensifies doxorubicin-induced cardiac damage

Sudhir Pandey, Wei Wen Kuo, Tsung Jung Ho, Yu Lan Yeh, Chia Yao Shen, Ray Jade Chen, Ruey Lin Chang, Pei Ying Pai, V. Vijaya Padma, Chih Yang Huang, Chih Yang Huang

研究成果: 雜誌貢獻文章同行評審

6 引文 斯高帕斯(Scopus)


Cardiotoxicity by doxorubicin hampers its therapeutic potential as an anticancer drug, but mechanisms leading to cardiotoxicity remain contentious. Through this study, the functional contribution of insulin-like growth factor receptor type II α (IGF-IIRα) which is a novel stress-inducible protein was explored in doxorubicin-induced cardiac stress. Employing both in vitro H9c2 cells and in vivo transgenic rat models (SD-TG [IGF-IIRα]) overexpressing IGF-IIRα specifically in heart, we found that IGF-IIRα leads to cardiac structural abnormalities and functional perturbations that were severely aggravated by doxorubicin-induced cardiac stress. Overexpression of IGF-IIRα leads to cumulative elevation of stress associated cardiac hypertrophy and apoptosis factors. There was a significant reduction of survival associated proteins p-Akt and estrogen receptor β/α, and abnormal elevation of cardiac hypertrophy markers such as atrial natriuretic peptide, cardiac troponin-I, and apoptosis-inducing agents such as p53, Bax, and cytochrome C, respectively. IGF-IIRα also altered the expressions of AT1R, ERK1/2, and p38 proteins. Besides, IGF-IIRα also increased the reactive oxygen species production in H9c2 cells which were markedly aggravated by doxorubicin treatment. Together, we showed that IGF-IIRα is a novel stress-induced protein that perturbed cardiac homeostasis and cumulatively exacerbated the doxorubicin-induced cardiac injury that perturbed heart functions and ensuing cardiomyopathy.
頁(從 - 到)16956-16966
期刊Journal of Cellular Biochemistry
出版狀態已發佈 - 1月 1 2019

ASJC Scopus subject areas

  • 生物化學
  • 分子生物學
  • 細胞生物學


深入研究「Upregulation of IGF-IIRα intensifies doxorubicin-induced cardiac damage」主題。共同形成了獨特的指紋。