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2017 ; 96
(43
): e8166
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Effects of TRPC1 on epithelial mesenchymal transition in human airway in chronic
obstructive pulmonary disease
#MMPMID29068985
Xu F
; Liu XC
; Li L
; Ma CN
; Zhang YJ
Medicine (Baltimore)
2017[Oct]; 96
(43
): e8166
PMID29068985
show ga
BACKGROUND: We investigated the effects of TRPC1 on epithelial mesenchymal
transition (EMT) in human airway in chronic obstructive pulmonary disease (COPD).
METHODS: A total of 94 patients who underwent lobectomy were selected and divided
into COPD (49 cases) and control (45 cases) groups. Immunohistochemistry was
applied to detect expression of E-cadherin and vimentin and TRPC1. Correlation of
TRPC1 expression with E-cadherin and vimentin expression, and correlations of
lung function indicators in COPD patients with expression of TRPC1, E-cadherin,
and vimentin were analyzed. Human airway epithelial cells (16HBE) were used for
cell experiments; and cigarette smoking extract (CSE) was adopted to establish
the COPD model using TRPC1 recombinant plasmids and siRNA. Cells were assigned
into the control, CSE, CSE?+?vector, CSE?+?TRPC1, CSE?+?si-NC, and CSE?+?si-TRPC1
groups. Quantitative real-time polymerase chain reaction (qRT-PCR) and Western
blot were implemented to detect expression of TRPC1, E-cadherin, and vimentin.
RESULTS: Compared with the control group, expression of TRPC1 and vimentin
significantly increased while expression of E-cadherin decreased in the COPD
group, and protein expression of TRPC1 was positively correlated with the protein
expression of vimentin but negatively correlated with the protein expression of
E-cadherin. Patients exhibiting positive expression of TRPC1 had lower FEV1,
FEV1%Pred, and FEV1/FVC, compared with the patients exhibiting negative
expression of TRPC1. Compared with the control group, expression of TRPC1 and
vimentin increased, whereas expression of E-cadherin decreased in the CSE,
CSE?+?vector, CSE?+?TRPC1, and CSE?+?si-NC groups. Compared with the CSE and
CSE?+?vector groups, the expression of TRPC1 and vimentin increased but the
expression of E-cadherin decreased in the CSE?+?TRPC1 group. Compared with the
CSE and CSE?+?si-NC groups, the expression of TRPC1 and vimentin decreased but
the expression of E-cadherin increased in the CSE?+?si-TRPC1 group. No
significant differences were observed among the CSE, CSE?+?vector and CSE?+?si-NC
groups. CONCLUSION: Overexpression of TRPC1 in COPD promoted EMT process and
TRPC1 may be a new and interesting focus for COPD new treatment in the future.