Abstract
Ras homolog enriched in brain (Rheb) couples growth factor signaling to activation of the target of rapamycin complex 1 (TORC1). To study its role in mammals, we generated a Rheb knockout mouse. In contrast to mTOR or regulatory-associated protein of mTOR (Raptor) mutants, the inner cell mass of Rheb-/- embryos differentiated normally. Nevertheless, Rheb-/- embryos died around midgestation, most likely due to impaired development of the cardiovascular system. Rheb-/- embryonic fibroblasts showed decreased TORC1 activity, were smaller, and showed impaired proliferation. Rheb heterozygosity extended the life span of tuberous sclerosis complex 1-deficient (Tsc1-/-) embryos, indicating that there is a genetic interaction between the Tsc1 and Rheb genes in mouse.
| Original language | English |
|---|---|
| Pages (from-to) | 1672-1678 |
| Number of pages | 7 |
| Journal | Molecular and Cellular Biology |
| Volume | 31 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Apr 2011 |
| Externally published | Yes |
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