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Metastasis-associated lung adenocarcinoma transcript 1(Malat1)is an example of a functional long noncoding RNA involved in many biologic processes.However,the mechanisms for Malat1 in myogenesis are unclear.Serum response factor(SRF)is a pivotal transcription factor for muscle proliferation and differentiation and is reported to be a target gene for muscle-specific microRNA-133(miR-133).