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miR-92a/DUSP10/JNK signalling axis promotes human pancreatic cancer cells proliferation
Gengsheng He1, Lei Zhang2, Qing Li3
1Center of Transplant Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan 421001, PR China; Department of General Surgery, the First Affiliated Hospital, South China University, Hengyang, 421001 Hunan, PR China.
Abstract:
Pancreatic cancer is one of the most common types of cancers in the whole world with a poor prognosis. Finding out how the cancer form and develop is the most important way to cure this cancer. miRNAs, 21-22 nucleotides regulatory small non-coding RNAs, have been found to be critical involved in the growth of pancreatic cancer. In this study, we found that miR-92a was up regulated in three kinds of human pancreatic cancer cell lines. There is a correlation between miR-92a and malignant degree of human pancreatic cancer cell lines. Then we found that miR-92a was essential for promoting cell proliferation in human pancreatic cancer. Inhibition of the function of miR-92a repressed the proliferation of pancreatic cancer cells. Further, we found that miR-92a enhanced the activation of JNK signalling pathway by directly targeting the JNK signalling inhibitor DUSP10. DUSP10 is responsible for miR-92a induced JNK signalling and cell proliferation. Altogether, our study showed a miR-92a/DUSP10/JNK signalling pathway that plays an important role in regulating the proliferation of pancreatic cancer cells.
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