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The tumor suppressor gene p 53 was shown to directly regulate the expression of microRNA‐34a ( miR‐34a ). miR‐34a regulates a plethora of target proteins, which are involved in cell cycle, apoptosis, differentiation, and cellular development. miR‐34a resides in the region of chromosome 1p36.23, which is commonly deleted in many tumor types, while it results in the loss expression of miR‐34a. The promoters of the miR‐34a gene subject to inactivation by CpG methylation also induce the loss expression of miR‐34a. Ectopic miR‐34a expression induces apoptosis, cell cycle arrest, and differentiation or reduces migration. This review summarizes the progress regarding the role of miR‐34a in cell cycle, differentiation, and apoptosis.
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Chen et al. (2011) studied this question.
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