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2017 ; 36
(8
): 964-966
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Re-evaluating the foundations of lncRNA-Polycomb function
#MMPMID28298433
Blanco MR
; Guttman M
EMBO J
2017[Apr]; 36
(8
): 964-966
PMID28298433
show ga
Many lncRNAs are thought to interact with the polycomb repressive complex 2
(PRC2) in order to regulate gene expression. A central example of this
lncRNA?PRC2 paradigm in gene regulation is HOTAIR. In this issue of The EMBO
Journal, a study (Portoso et al, 2017) reports that while HOTAIR binds PRC2 with
high affinity, the complex itself is dispensable for HOTAIR?mediated
transcriptional silencing. This study raises important questions about the role
of PRC2 interactions for lncRNA?mediated functions and argues for a re?evaluation
of this lncRNA?PRC2 functional paradigm.