MicroRNA-200b (miR-200b) is encoded by the MIR200B gene, which is part of the microRNA-200 family located on chromosome 1 in humans. This microRNA plays a crucial role in the regulation of gene expression, particularly in processes related to epithelial-to-mesenchymal transition (EMT), cell proliferation, differentiation, and apoptosis.
miR-200b is generally considered antitumorigenic in many contexts. It plays a critical role in maintaining epithelial characteristics and inhibiting EMT, which is associated with reduced metastatic potential. By targeting genes involved in cell migration and invasion, miR-200b can suppress tumor progression.
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