Abstract
Metastasis Associated Protein1 (MTA1) is a chromatin modifier and its expression is significantly associated with prognosis of many cancers. However, its role in glucose metabolism remains unexplored. Here, we report that MTA1 has a significant role in glucose metabolism where MTA1 regulates the LDHA expression and activity and subsequently its function in breast cancer motility. The results showed that MTA1 expression is positively correlated with the LDHA expression levels in breast cancer patients. Further, it was found that MTA1 is necessary for the optimal expression of LDHA. The underlying molecular mechanism involves the interaction of MTA1 with c-Myc and recruitment of MTA1-c-Myc complex on to the LDHA promoter to regulate its transcription. Consequently, the LDHA knock down using LDHA specific siRNA in MCF7 cells stably expressing MTA1 reduced the migration of MCF7 cells. Altogether these findings revealed the regulatory role for MTA1 in LDHA expression and its resulting biological function.
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