miR-197 Expression in Peripheral Blood Mononuclear Cells from Hepatitis B Virus-Infected Patients
Gut and Liver
;
: 335-342, 2013.
Article
in English
| WPRIM
| ID: wpr-158231
ABSTRACT
BACKGROUND/AIMS:
This study aimed to investigate the microRNA (miRNA) expression profiles in peripheral blood mononuclear cell (PBMC) of hepatitis B virus (HBV)-infected patients with different clinical manifestations and to analyze the function of miR-197.METHODS:
PBMC miRNA expression profiles in 51 healthy controls, 70 chronic asymptomatic carriers, 107 chronic hepatitis B patients, and 76 HBV-related acute on chronic liver failure patients were analyzed by quantitative real-time polymerase chain reaction (qRT-PCR). miR-197 mimic and inhibitor were transfected in THP-1 cells. qRT-PCR and ELISA for interleukin (IL)-18 mRNA and protein levels were performed, respectively.RESULTS:
The microarray analysis revealed that 17 PBMC miRNA expression profiles (12 miRNAs downregulated and five miRNAs upregulated) differed significantly in HBV-induced liver disease patients presenting with various symptoms. The qRT-PCR results suggested that the PBMC miR-197 levels regularly decreased as the severity of liver disease symptoms became aggravated. IL-18, a key regulator in inflammation and immunity, was inversely correlated with miR-197 levels. Bioinformatic analysis indicated that IL-18 was a target of miR-197. Exogenous expression of miR-197 could significantly repress IL-18 expression at both the mRNA and protein levels in THP-1 cells.CONCLUSIONS:
We concluded that multiple PBMC miRNAs had differential expression profiles during HBV infection and that miR-197 may play an important role in the reactivation of liver inflammation by targeting IL-18.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
RNA, Messenger
/
Enzyme-Linked Immunosorbent Assay
/
Hepatitis B virus
/
Interleukins
/
Liver Failure
/
Hepatitis B, Chronic
/
Interleukin-18
/
MicroRNAs
/
Microarray Analysis
/
End Stage Liver Disease
Limits:
Humans
Language:
English
Journal:
Gut and Liver
Year:
2013
Type:
Article
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