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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 Biochim+Biophys+Acta
2014 ; 1843
(9
): 1839-50
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Cholesterol-induced activation of TRPM7 regulates cell proliferation, migration,
and viability of human prostate cells
#MMPMID24769209
Sun Y
; Sukumaran P
; Varma A
; Derry S
; Sahmoun AE
; Singh BB
Biochim Biophys Acta
2014[Sep]; 1843
(9
): 1839-50
PMID24769209
show ga
Cholesterol has been shown to promote cell proliferation/migration in many cells;
however the mechanism(s) have not yet been fully identified. Here we demonstrate
that cholesterol increases Ca(2+) entry via the TRPM7 channel, which promoted
proliferation of prostate cells by inducing the activation of the AKT and/or the
ERK pathway. Additionally, cholesterol mediated Ca(2+) entry induced calpain
activity that showed a decrease in E-cadherin expression, which together could
lead to migration of prostate cancer cells. An overexpression of TRPM7
significantly facilitated cholesterol dependent Ca(2+) entry, cell proliferation
and tumor growth. Whereas, TRPM7 silencing or inhibition of cholesterol synthesis
by statin showed a significant decrease in cholesterol-mediated activation of
TRPM7, cell proliferation, and migration of prostate cancer cells. Consistent
with these results, statin intake was inversely correlated with prostate cancer
patients and increase in TRPM7 expression was observed in samples obtained from
prostate cancer patients. Altogether, we provide evidence that
cholesterol-mediated activation of TRPM7 is important for prostate cancer and
have identified that TRPM7 could be essential for initiation and/or progression
of prostate cancer.