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2017 ; 18
(8
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
The Retinoblastoma (RB) Tumor Suppressor: Pushing Back against Genome Instability
on Multiple Fronts
#MMPMID28812991
Vélez-Cruz R
; Johnson DG
Int J Mol Sci
2017[Aug]; 18
(8
): ä PMID28812991
show ga
The retinoblastoma (RB) tumor suppressor is known as a master regulator of the
cell cycle. RB is mutated or functionally inactivated in the majority of human
cancers. This transcriptional regulator exerts its function in cell cycle control
through its interaction with the E2F family of transcription factors and with
chromatin remodelers and modifiers that contribute to the repression of genes
important for cell cycle progression. Over the years, studies have shown that RB
participates in multiple processes in addition to cell cycle control. Indeed, RB
is known to interact with over 200 different proteins and likely exists in
multiple complexes. RB, in some cases, acts through its interaction with E2F1,
other members of the pocket protein family (p107 and p130), and/or chromatin
remodelers and modifiers. RB is a tumor suppressor with important chromatin
regulatory functions that affect genomic stability. These functions include the
role of RB in DNA repair, telomere maintenance, chromosome condensation and
cohesion, and silencing of repetitive regions. In this review we will discuss
recent advances in RB biology related to RB, partner proteins, and their
non-transcriptional functions fighting back against genomic instability.