Abstract
The signaling pathway from phosphoinositide 3-kinase to the protein kinase Akt controls organismal life-span in invertebrates and cell survival and proliferation in mammals by inhibiting the activity of members of the FOXO family of transcription factors. We show that mammalian FOXO3a also functions at the G 2 to M checkpoint in the cell cycle and triggers the repair of damaged DNA. By gene array analysis, FOXO3a was found to modulate the expression of several genes that regulate the cellular response to stress at the G 2 -M checkpoint. The growth arrest and DNA damage response gene Gadd45a appeared to be a direct target of FOXO3a that mediates part of FOXO3a's effects on DNA repair. These findings indicate that in mammals FOXO3a regulates the resistance of cells to stress by inducing DNA repair and thereby may also affect organismal life-span.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 27, 2002, 1:54 a.m.) |
Deposited | 1 year, 7 months ago (Jan. 9, 2024, 5:38 p.m.) |
Indexed | 2 days, 12 hours ago (Aug. 26, 2025, 2:31 a.m.) |
Issued | 23 years, 4 months ago (April 19, 2002) |
Published | 23 years, 4 months ago (April 19, 2002) |
Published Print | 23 years, 4 months ago (April 19, 2002) |
@article{Tran_2002, title={DNA Repair Pathway Stimulated by the Forkhead Transcription Factor FOXO3a Through the Gadd45 Protein}, volume={296}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1068712}, DOI={10.1126/science.1068712}, number={5567}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Tran, Hien and Brunet, Anne and Grenier, Jill M. and Datta, Sandeep R. and Fornace, Albert J. and DiStefano, Peter S. and Chiang, Lillian W. and Greenberg, Michael E.}, year={2002}, month=apr, pages={530–534} }