Abstract
Irisin is a newly discovered exercise-induced cytokine, produced by the proteolytic hydrolysis of fibronectin type III domain-containing protein 5 (FNDC5). Irisin is widely distributed in the human body and is involved in the browning of white adipose tissue, improving insulin resistance, improving cognitive function, and regulating bone metabolism. Recent studies have shown that irisin concentration is elevated in a variety of tumor tissues as compared with that in normal tissues. However, irisin has different effects on the proliferation and apoptosis of tumor cells in breast cancer, lung cancer, and liver cancer through various mechanisms. Irisin plays an important role in the occurrence, development, and metastasis of different tumors, suggesting that irisin can be used as a potential target for tumor diagnosis and treatment. Therefore, studying the expression and function of irisin in tumors may be of great significance for the prevention and treatment of tumors. This article reviews the research progress on the role of irisin in tumors.
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