Pancreatic cancer (PC) is one of the most aggressive malignancies, with a high mortality. Distant metastasis and recurrence are the main causes of PC-related deaths. MicroRNAs (miRNAs) have been reported in the serum or tumor tissue of cancer patients, including PC, which makes them potential biomarkers. The dysfunction of many miRNAs has been linked to PC occurrence and metastasis. In the current study, we found that miR-601 expression was significantly lower in PC samples, especially in metastatic compared to non-metastatic PC tissues. Gain-of-function and loss-of-function analysis showed that miR-601 suppressed PC cell proliferation and migration. One potential mechanism is that miR-601 inhibited the expression of Sirtuin 1 (SIRT1), which is a well-known regulator of PC development. We found that overexpression of SIRT1 could reverse the effect of miR-601 on PC cells. Our investigation therefore suggests that both miR-601 and SIRT1 are possible biomarkers for the early detection, and targets for the treatment of PC.
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