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2016 ; 17
(9
): 1292-303
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Gut microbiota directs PPAR?-driven reprogramming of the liver circadian clock by
nutritional challenge
#MMPMID27418314
Murakami M
; Tognini P
; Liu Y
; Eckel-Mahan KL
; Baldi P
; Sassone-Corsi P
EMBO Rep
2016[Sep]; 17
(9
): 1292-303
PMID27418314
show ga
The liver circadian clock is reprogrammed by nutritional challenge through the
rewiring of specific transcriptional pathways. As the gut microbiota is tightly
connected to host metabolism, whose coordination is governed by the circadian
clock, we explored whether gut microbes influence circadian homeostasis and how
they distally control the peripheral clock in the liver. Using fecal transplant
procedures we reveal that, in response to high-fat diet, the gut microbiota
drives PPAR?-mediated activation of newly oscillatory transcriptional programs in
the liver. Moreover, antibiotics treatment prevents PPAR?-driven transcription in
the liver, underscoring the essential role of gut microbes in clock reprogramming
and hepatic circadian homeostasis. Thus, a specific molecular signature
characterizes the influence of the gut microbiome in the liver, leading to the
transcriptional rewiring of hepatic metabolism.