Abstract
ObjectiveTo uncover the expression pattern and the prognosis of miR-4262 in these patients with esophageal cancer, and its potential mechanism. MethodsMiR-4262 levels in 57 esophageal cancer and paracancerous specimens were detected. The relationship between miR-4262 level and clinical features of esophageal cancer was analyzed. After overexpression of miR-4262 in OE19 and EC-109 cells, changes in proliferative potential and apoptosis were examined. The interaction between miR-4262 and KLF6 was explored by dual-luciferase reporter assay. Their involvement in the development of esophageal cancer was finally determined. ResultsMiR-4262 was downregulated in esophageal cancer specimens and cell lines. Low level of miR-4262 predicted advanced pathological staging and poor prognosis in esophageal cancer patients. Overexpression of miR-4262 reduced proliferative potential and enhanced apoptosis in esophageal cancer cells. KLF6 was the downstream gene binding to miR-4262. The interaction between miR-4262 and KLF6 was responsible for alleviating the malignant development of esophageal cancer. ConclusionsMiR-4262 is downregulated in esophageal cancer and linked to its pathological staging and prognosis. MiR-4262 inhibits the malignant development of esophageal cancer by down-regulating KLF6.
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