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ARF5 — E2F5
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Parisi et al., Biochem Biophys Res Commun 2002
:
Transcriptional
regulation of the human tumor suppressor
p14(ARF) by E2F1,
E2F2 , E2F3, and Sp1-like factors ... Moreover, our data suggest that the
ARF promoter is
regulated by
E2F through both direct binding to the promoter sequences and indirectly, probably by being tethered to the ARF promoter by Sp1-like factors
Mason et al., Oncogene 2002
(Bone Neoplasms...) :
p14(ARF) regulates
E2F activity ...
p14(ARF) regulates
E2F activity in different cell-types, including p53 ( -/- ) /mdm ( -/- ) MEFs, thus excluding that the effects of p14(ARF) are indirectly caused through MDM2 modulation
Aslanian et al., Genes Dev 2004
(Cell Transformation, Neoplastic) :
Our data also demonstrate a direct
role for
E2F in the oncogenic activation of
Arf ... Thus, distinct
E2F complexes directly
contribute to the normal repression and oncogenic activation of
Arf
Komori et al., EMBO J 2005
:
The tumor suppressor
p14(ARF) gene is
induced by ectopically expressed
E2F , a positive regulator of the cell cycle ... How
p14(ARF) gene is
regulated by
E2F in normally growing cells and tumor cells remains obscure ... Here we show that
regulation of
p14(ARF) gene by
E2F is distinct from that of classical E2F targets
Rizos et al., Cell cycle (Georgetown, Tex.) 2007
(Genetic Predisposition to Disease) :
In this report we explored the
effects of
ARF on
E2F ubiquitination and degradation in relationship to cell cycle effects and p53 status
Zhang et al., J Cell Biochem 2010
:
Thus, E2F mediated activation of the ARF gene and
ARF mediated functional inhibition of
E2F compose a feedback loop, by which the two opposites act in concert to regulate cell proliferation and apoptosis, depending on the cellular context and the environment