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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Biochemistry
2015 ; 54
(2
): 110-23
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Circadian clock, cancer, and chemotherapy
#MMPMID25302769
Sancar A
; Lindsey-Boltz LA
; Gaddameedhi S
; Selby CP
; Ye R
; Chiou YY
; Kemp MG
; Hu J
; Lee JH
; Ozturk N
Biochemistry
2015[Jan]; 54
(2
): 110-23
PMID25302769
show ga
The circadian clock is a global regulatory system that interfaces with most other
regulatory systems and pathways in mammalian organisms. Investigations of the
circadian clock-DNA damage response connections have revealed that nucleotide
excision repair, DNA damage checkpoints, and apoptosis are appreciably influenced
by the clock. Although several epidemiological studies in humans and a limited
number of genetic studies in mouse model systems have indicated that clock
disruption may predispose mammals to cancer, well-controlled genetic studies in
mice have not supported the commonly held view that circadian clock disruption is
a cancer risk factor. In fact, in the appropriate genetic background, clock
disruption may instead aid in cancer regression by promoting intrinsic and
extrinsic apoptosis. Finally, the clock may affect the efficacy of cancer
treatment (chronochemotherapy) by modulating the pharmacokinetics and
pharmacodynamics of chemotherapeutic drugs as well as the activity of the DNA
repair enzymes that repair the DNA damage caused by anticancer drugs.