Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: EC:2.7.12.2 (
MEK
)
18,161
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Objective:
Hepatocellular carcinoma (HCC) is one of the most common malignant tumors with a high rate of mortality. Our previous study shows the expression of
calponin 2
(
CNN2
) is up-regulated in hepatocellular carcinoma tissues, especially in metastatic ones. To better understand the role of
CNN2
in HCC, RNA interference (RNAi) was used to explore its role in tumor growth and metastasis.
Methods:
Lentivirus-mediated
CNN2
-shRNA was transfected into SK-hep-1 cells, and the efficacy of
CNN2
expression, cell migration, invasion, proliferation and cell cycles were evaluated by quantitative real-time polymerase chain reaction (qRT-PCR), Western blot (WB), Transwell assay, methyl thiazol tetrazolium assay and flow cytometry, respectively. SK-hep-1 cells transfected with Lentivirus-
CNN2
shRNA were xenografted in Balb/C nude mice to explore the effect of
CNN2
-shRNA in tumor growth. Xenograft tumor tissues were examined for their histopathology, cell apoptosis, the expression of total protein and their corresponding phosphorylated protein of
MEK1
/2, ERK1/2, AKT, by hematoxylin and eosin stain (H & E staining), TUNEL assay, immunohistochemical technique, respectively.
Results:
Our research shows it is evident that
CNN2
shRNA can effectively down-regulate the expressions of
CNN2
mRNA and protein, inhibit cell proliferations, arrest cell cycles at the S phase and reduce cell migration and invasion. SK-hep-1 cells with
CNN2
down-regulation have markedly attenuated tumor growth in nude mice. Xenograft tumor tissues have displayed typical tumor characteristics and no apoptosis is detected in shRNA group or in control group. No metastatic tumor was found in any group of nude mice. With CNN2 protein down-regulation, the protein of pMEK1/2 and pERK1/2 are effectively down-regulated, except pAKT, AKT,
MEK1
/2 and ERK1/2.
Conclusions:
CNN2
plays an important role in tumor growth and metastasis, possibly through
MEK1
/2-ERK1/2 signaling pathway. Our study illustrate that
CNN2
might be a potential target in HCC molecular target therapy.
...
PMID:Lentivirus-mediated shRNA Targeting CNN2 Inhibits Hepatocarcinoma
in Vitro
and
in Vivo
. 2933 89
