alexa ATF5 increases cisplatin-induced apoptosis through up-regulation of cyclin D3 transcription in HeLa cells.
Molecular Biology

Molecular Biology

Cell & Developmental Biology

Author(s): Wei Y, Jiang J, Sun M, Chen X, Wang H,

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Abstract ATF5 transcription factor plays an essential role in hematopoietic and glioma cell survival and neuronal cell differentiation. Here, we report for the first time the pro-apoptosis role of ATF5 and identify Cyclin D3 as an ATF5-targeted apoptosis-related gene. The ectopic expression of ATF5 in HeLa cells could markedly increase cisplatin-induced apoptosis and the cleavage of Caspase-3, and induce Cyclin D3 mRNA expression via cooperation with E2F1 transcription factor. Moreover, the interference of Cyclin D3 expression by transfection with Cyclin D3 RNAi could protect cells from ATF5-mediated apoptosis induced by cisplatin, indicating the contribution of Cyclin D3 in ATF5-mediated apoptosis. Taken together, these results suggest that ATF5 increases cisplatin-induced apoptosis through up-regulation of Cyclin D3 transcription, which elicits survival signals in HeLa cells. This article was published in Biochem Biophys Res Commun and referenced in Cell & Developmental Biology

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