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2017 ; 6
(ä): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Mice deficient of Myc super-enhancer region reveal differential control mechanism
between normal and pathological growth
#MMPMID28583252
Dave K
; Sur I
; Yan J
; Zhang J
; Kaasinen E
; Zhong F
; Blaas L
; Li X
; Kharazi S
; Gustafsson C
; De Paepe A
; Månsson R
; Taipale J
Elife
2017[Jun]; 6
(ä): ä PMID28583252
show ga
The gene desert upstream of the MYC oncogene on chromosome 8q24 contains
susceptibility loci for several major forms of human cancer. The region shows
high conservation between human and mouse and contains multiple MYC enhancers
that are activated in tumor cells. However, the role of this region in normal
development has not been addressed. Here we show that a 538 kb deletion of the
entire MYC upstream super-enhancer region in mice results in 50% to 80% decrease
in Myc expression in multiple tissues. The mice are viable and show no overt
phenotype. However, they are resistant to tumorigenesis, and most normal cells
isolated from them grow slowly in culture. These results reveal that only cells
whose MYC activity is increased by serum or oncogenic driver mutations depend on
the 8q24 super-enhancer region, and indicate that targeting the activity of this
element is a promising strategy of cancer chemoprevention and therapy.