Heliyon (Jun 2023)

IL-27 promotes cardiac fibroblast activation and aggravates cardiac remodeling post myocardial infarction

  • Xiaoxue Ma,
  • Qingshu Meng,
  • Shiyu Gong,
  • Shanshan Shi,
  • Xiaoting Liang,
  • Fang Lin,
  • Li Gong,
  • Xuan Liu,
  • Yinzhen Li,
  • Mimi Li,
  • Lu Wei,
  • Wei Han,
  • Leng Gao,
  • Zhongmin Liu,
  • Xiaohui Zhou

Journal volume & issue
Vol. 9, no. 6
p. e17099

Abstract

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Excessive and chronic inflammation post myocardial infarction (MI) causes cardiac fibrosis and progressive ventricular remodeling, which leads to heart failure. We previously found high levels of IL-27 in the heart and serum until day 14 in murine cardiac ischemia‒reperfusion injury models. However, whether IL-27 is involved in chronic inflammation-mediated ventricular remodeling remains unclear. In the present study, we found that MI triggered high IL-27 expression in murine cardiac macrophages. The increased expression of IL-27 in serum is correlated with cardiac dysfunction and aggravated fibrosis after MI. Furthermore, the addition of IL-27 significantly activated the JAK/STAT signaling pathway in cardiac fibroblasts (CFs). Meanwhile, IL-27 treatment promoted the proliferation, migration and extracellular matrix (ECM) production of CFs induced by angiotensin II (Ang II). Collectively, high levels of IL-27 mainly produced by cardiac macrophages post MI contribute to the activation of CFs and aggravate cardiac fibrosis.

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