Abstract
ABSTRACT Senescent cells can drive tumors development by promoting chronic inflammation. There is a significant correlation between β-Klotho expression profiles and endometrial cancer (EC). However, how β-Klotho regulates the occurrence and development of uterine EC remains to be further studied. Our research found that compared with normal endometrial tissues, β-Klotho expression levels in EC tissues were significantly reduced; overexpression of β-Klotho significantly inhibited aging, proliferation and migration but promoted apoptosis of EC cells cultured in vitro. In normal endometrial cells, results confirmed that reduced levels of β-Klotho promoted CSF-1 secretion, and the migration ability of macrophages was significantly enhanced when co-cultured with normal endometrial cells. In contrast, the expression of CSF-1 was significantly reduced after overexpression of β-Klotho in EC cells, and the macrophage migration ability is significantly weakened when co-cultured with EC cells. Therefore, we believe that β-Klotho influences macrophage migration by regulating the expression of CSF-1, thereby interfering with the progression of EC. We investigated in depth the mechanism of β-Klotho regulating CSF-1 secretion and found that β-Klotho inhibits the phosphorylation of p65, which blocked the nuclear translocation of p65, thereby inhibiting the secretion of CSF-1 by EC cells. The above results indicate that β-Klotho-mediated inhibition of CSF-1 secretion reduces the migration of macrophages to tumor tissue and delays the progression of EC.
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