TNNT1 facilitates proliferation of breast cancer cells by promoting G1/S phase transition

Publication date: Available online 19 July 2018Source: Life SciencesAuthor(s): Yawei Shi, Yang Zhao, Yunjian Zhang, NiJiati AiErken, Nan Shao, Runyi Ye, Ying Lin, Shenming WangAbstractAimsBreast cancer is the major diagnosed cancer and the leading reason of cancer related death among women, and the tumor size is one of the risk factors. Therefore, it is significant to reveal the principle of breaking the subtle homeostasis of cell cycle and sustaining chronic proliferation of cancer cells.Main methodsThe expression of TNNT1 was examined by qPCR and western blotting. The effect of TNNT1 on cell proliferation was detected by MTT, colony formation and anchorage-independent growth assay. The percent of cells in different cell phase was analyzed by Flow cytometry. The mRNA and protein expression of genes involved in G1/S transition was assayed using qPCR and western blotting, respectively.Key findingsThe results showed that TNNT1 expression is significantly increased in breast cancer tissues and closely correlated with clinical stage, T and N classification. Further experiments demonstrate that TNNT1 contributes to proliferation of breast cells by promoting G1/S transition.SignificanceOur results extend the mechanisms of controlling cell cycle and may provide a novel therapeutic target to therapy breast cancer.

Source: Life Sciences - July 19, 2018 Category: Biology Source Type: research