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Cancer Lett. 2011 Aug 28;307(2):211-20. doi: 10.1016/j.canlet.2011.04.005. Epub 2011 May 6.

MicroRNA-143 functions as a tumor suppressor in human bladder cancer T24 cells.

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The United Graduate School of Veterinary Sciences, Gifu University, Yanagido, Gifu, Japan.


MicroRNA (miR)-143 and -145 were down-regulated in human bladder cancer T24 cells. The enforced expression of miR-143 induced growth-suppression in T24 cells through down-regulation of ERK5 and Akt expression at translational level, and chemically-modified synthetic miR-143 (miR-143/BP) exhibited a greater growth inhibitory effect than wild-type miR-143. In addition, the synthetic miR-143/BP induced apoptotic cell death in some of the transfected cells. Furthermore, co-treatment with the synthetic miR-143/BP and cisplatin showed the additive growth-suppressing effect on T24 cells. These findings suggest that the chemically-modified synthetic miR-143 functions as a tumor suppressor in T24 cells by targeting ERK5 and/or Akt.

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