期刊
DEVELOPMENTAL CELL
卷 14, 期 1, 页码 62-75出版社
CELL PRESS
DOI: 10.1016/j.devcel.2007.10.017
关键词
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资金
- NCI NIH HHS [R01 CA121275, R01 CA085619-05, R01 CA082259, R01CA82259, R01CA85619, R01 CA085619, R01 CA121275-01A2, R01 CA085619-04, P01 CA097189-040002, P01CA097189, P01 CA097189-030002, P01 CA097189] Funding Source: Medline
- NICHD NIH HHS [R01 HD047470-03, R01 HD047470-04, R01HD047470, R01 HD047470, R01HD42619, R01 HD042619] Funding Source: Medline
- EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH &HUMAN DEVELOPMENT [R01HD047470, R01HD042619] Funding Source: NIH RePORTER
- NATIONAL CANCER INSTITUTE [R01CA082259, P01CA097189, R01CA121275, R01CA085619] Funding Source: NIH RePORTER
The E2f7 and E2f8 family members are thought to function as transcriptional repressors important for the control of cell proliferation. Here, we have analyzed the consequences of inactivating E2f7 and EM in mice and show that their individual loss had no significant effect on development. Their combined ablation, however, resulted in massive apoptosis and dilation of blood vessels, culminating in lethality by embryonic day E11.5. A deficiency in E2f7 and E2f8 led to an increase in E2f1 and p53, as well as in many stress-related genes. Homo- and heterodimers of E2F7 and E2F8 were found on target promoters, including E2f1. Importantly, loss of either E2f1 or p53 suppressed the massive apoptosis in double-mutant embryos. These results identify E2F7 and E2F8 as a unique repressive arm of the E2F transcriptional network that is critical for embryonic development and control of the E2F1-p53 apoptotic axis.
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