Proliferation, but not growth, blocked by conditional deletion of 40S ribosomal protein S6 (CROSBI ID 111829)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Volarević, Siniša ; Stewart, Mary J. ; Ledermann, Birgit ; Zilberman, Frederic ; Terracciano, Luigi ; Montini, Eugenio ; Grompe, Markus ; Kozma, Sara C. ; Thomas, George
engleski
Proliferation, but not growth, blocked by conditional deletion of 40S ribosomal protein S6
Because ribosome biogenesis plays an essential role in cell proliferation, control mechanisms may have evolved to recognize lesions in this critical anabolic process. To test this possibility, we conditionally deleted the gene encoding 40S ribosomal protein S6 in the liver of adult mice. Unexpectedly, livers from fasted animals deficient in S6 grew in response to nutrients even though biogenesis of 40S ribosomes was abolished. However, liver cells failed to proliferate or induce cyclin E expression after partial hepatectomy, despite formation of active cyclin D-CDK4 complexes. These results imply that abrogation of 40S ribosome biogenesis may induce a checkpoint control that prevents cell cycle progression.
ribosomal protein S6 ; cell growth ; cell proliferation ; Cre/loxP
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