MicroRNA-124 (MiR-124) Inhibits Cell Proliferation, Metastasis and Invasion in Colorectal Cancer by Downregulating Rho-Associated Protein Kinase 1(ROCK1).
2016
Background/Aims:
MiR-124 inhibits neoplastic transformation, cell proliferation, and metastasis and downregulates
Rho-associated protein kinase(
ROCK1) in Colorectal Cancer (CRC). The aim of this study was to further investigate the roles and interactions of
ROCK1and
miR-124 and the effects of knockdown of ROCK1and
MiR-124 in human Colorectal Cancer (CRC). Methods: Three Colorectal cancer cell lines (HCT116, HT29 and SW620) and one Human Colonic Mucosa Epithelial cell line (NCM460) were studied. The protein expression of
ROCK1was examined by Western-blot and qRT-PCR were performed to examine the expression levels of
ROCK1mRNA and
miR-124. Furthermore, We performed transfection of cancer cell line (SW620) with pre-
miR-124(mimics), anti-
miR-124(inhibitor),
ROCK1siRNA and the control, then observed the affects of
ROCK1protein expression by westen-blot, cell proliferation by EDU (
5-ethynyl-2'deoxyuridineassay) and expression levels of ROCK1mRNA by qRT-PCR . A soft agar formation assay, Migration and invasion assays were used to determine the effect of regulation of
miR-124 and
ROCK1, and survivin on the transformation and invasion capability of colorectal cancer cell. Results:
MiR-124 expression was significantly downregulated in CRC cell lines compare to normal (P 0.05).
ROCK1mRNA was unaltered in cells transfected with
miR-124 mimic and
miR-124 inhibitor, compared to normal controls. There was a significant reduction in
ROCK1protein in cells transfected with
miR-124 mimic and a significant increase in cells transfected with
miR-124 inhibitor (P Conclusions: In conclusion, our results demonstrated that
miR-124 not only promoted cancer cell hyperplasia and significantly associated with CRC metastasis and progression, but also downregulated
ROCK1protein expression. More importantly, increased
ROCK1expression or inhibited
miR-124 expression may constitute effective new therapeutic strategies for the treatment of renal cancer in the future.
Keywords:
-
Correction
-
Source
-
Cite
-
Save
42
References
39
Citations
NaN
KQI