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2018 ; 40
(1
): 272-282
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miR-142-5p regulates CD4+ T cells in human non-small cell lung cancer through
PD-L1 expression via the PTEN pathway
#MMPMID29767245
Wan J
; Ling X
; Peng B
; Ding G
Oncol Rep
2018[Jul]; 40
(1
): 272-282
PMID29767245
show ga
The present study aimed to evaluate the function of microRNA (miR)-142-5p on
cancer immunity to induce apoptosis in human non-small cell lung cancer (NSCLC)
and its mechanism. miR-142-5p expression was upregulated, and CD4+ T cell levels
were reduced in patients with NSCLC. Overexpression of miR-142-5p expression
inhibited the cancer effects of CD4+ T cells on NSCLC cell lines, and
downregulation of miR-142-5p increased the cancer effects of CD4+ T cells on
NSCLC cell lines, compared with the control group. In addition, we found that
overexpression of miR-142-5p suppressed PTEN protein expression and induced PI3K,
p-Akt and PD-L1 protein expression in an in vitro model of NSCLC. Downregulation
of miR-142-5p induced PTEN and PD-L1 protein expression and suppressed PI3K and
p-Akt and protein expression in an in vitro model of NSCLC. The suppression of
PD-L1 reduced the cancer effects of CD4+ T cells on NSCLC cell lines following
miR-142-5p downregulation. The inhibition of PTEN also reduced the cancer effects
of CD4+ T cells on NSCLC cell lines following miR-142-5p downregulation.
Therefore, our study demonstrated that miR-142-5p regulated CD4+ T cells in human
NSCLC through PD-L1 expression via the PTEN pathway.