Synergistic cardiac pathological hypertrophy induced by high-salt diet in IGF-IIRα cardiac-specific transgenic rats

Ruey Lin Chang, Srinivasan Nithiyanantham, Chih Yang Huang, Pei Ying Pai, Tung Ti Chang, Lai Chin Hu, Ray Jade Chen, V. VijayaPadma, Wei Wen Kuo, Chih Yang Huang

研究成果: 雜誌貢獻文章

摘要

Stress-induced cardiac hypertrophy leads to heart failure. Our previous studies demonstrate that insulin-like growth factor—II receptor (IGF-IIR) signaling is pivotal to hypertrophy regulation. In this study, we show a novel IGF-IIR alternative spliced transcript, IGF-IIRα (150 kDa) play a key role in high-salt induced hypertrophy mechanisms. Cardiac overexpression of IGF-IIRα and high-salt diet influenced cardiac dysfunction by increasing pathophysiological changes with up-regulation of hypertrophy markers, atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP). We found that, cardiac hypertrophy under high-salt conditions were amplified in the presence of IGF-IIRα overexpression. Importantly, high-salt induced angiotensin II type I receptor (AT1R) up regulation mediated IGF-IIR expressions via upstream mitogen activated protein kinase (MAPK)/silent mating type information regulation 2 homolog 1 (SIRT1)/heat shock factor 1 (HSF1) pathway. Further, G-coupled receptors (Gαq) activated calcineurin/nuclear factor of activated T-cells, cytoplasmic 3 (NFATc3)/ protein kinase C (PKC) signaling was significantly up regulated under high-salt conditions. All these effects were observed to be dramatically over-regulated in IGF-IIRα transgenic rats fed with a high-salt diet. Altogether, from the findings, we demonstrate that IGF-IIRα plays a crucial role during high-salt conditions leading to synergistic cardiac hypertrophy.
原文英語
文章編號e0216285
期刊PLoS ONE
14
發行號6
DOIs
出版狀態已發佈 - 六月 1 2019

    指紋

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

引用此

Chang, R. L., Nithiyanantham, S., Huang, C. Y., Pai, P. Y., Chang, T. T., Hu, L. C., Chen, R. J., VijayaPadma, V., Kuo, W. W., & Huang, C. Y. (2019). Synergistic cardiac pathological hypertrophy induced by high-salt diet in IGF-IIRα cardiac-specific transgenic rats. PLoS ONE, 14(6), [e0216285]. https://doi.org/10.1371/journal.pone.0216285