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2016 ; 12
(6
): 5235-5239
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Potential role of melastatin-related transient receptor potential cation channel
subfamily M gene expression in the pathogenesis of urinary bladder cancer
#MMPMID28101241
Ceylan GG
; Önalan EE
; Kulo?lu T
; Aydo? G
; Kele? ?
; Tonyali ?
; Ceylan C
Oncol Lett
2016[Dec]; 12
(6
): 5235-5239
PMID28101241
show ga
Urinary bladder cancer is one of the most common malignancies of the urinary
tract. Ion channels and calcium homeostasis are involved in almost all basic
cellular mechanisms. The transient receptor potential cation channel subfamily M
(TRPM) takes its name from the melastatin protein, which is classified as
potential tumor suppressor. To the best of our knowledge, there have been no
previous studies in the literature investigating the role of these ion channels
in bladder cancer. The present study aimed to determine whether bladder cancer is
associated with mRNA expression levels of TRPM ion channel genes, and whether
there is the potential to conduct further studies to establish novel treatment
modalities. The present study included a total of 47 subjects, of whom 40 were
bladder cancer patients and 7 were controls. Following the histopathological
evaluation for bladder carcinoma, the mRNA and protein expression of TRPM were
examined by reverse transcription-quantitative polymerase chain reaction
(RT-qPCR) and immunohistochemistry in tumor and normal tissues, in order to
determine whether there is a difference in the expression of these channels in
tumor and normal tissues. Immunoreactivity for TRPM2, TRPM4, TRPM7 and TRPM8 was
observed in epithelial bladder cells in the two groups. RT-qPCR revealed a
significant increase in TRPM7 expression in bladder cancer tissue compared to the
controls (healthy bladder tissue), whereas no differences in TRPM2 or TRPM4
expression levels were observed. There were significant reductions in the
expression levels of TRPM5 and TRPM8 in bladder cancer tissues. In the present
study, the effects of TRP ion channels on the formation of bladder cancer was
investigated. This study is instructive for TRPM2, TRPM4, TRPM5, TRPM7 and TRPM8
and their therapeutic role in bladder cancer. The results support the fact that
these gens can be novel targets and can also be tested for during the treatment
of bladder cancer.