HBV X Gene Transfection Upregulates IL-1β and IL-6 Gene Expression and Induces Rat Glomerular Mesangial Cell Proliferation
- Author:
LU HONGZHU
1
;
ZHOU JIANHUA
Author Information
1. 华中科技大学同济医学院附属同济医院
- Keywords:
interleukin-1β;
interleukin-6;
heptitis B virus;
X gene;
mesangial cell line;
rat
- From:
Journal of Huazhong University of Science and Technology (Medical Sciences)
2008;28(3):247-250
- CountryChina
- Language:Chinese
-
Abstract:
The X gene of HBV encodes a 17-KD protein, termed HBx, which has been shown to function as a transcriptional trans-activator of a variety of viral and cellular promoter/enhancer elements. The aim of this study was to investigate the effect of HBx on gene expression of interleukin (IL)-1β and IL-6, and proliferation of rat mesangial cells in vitro. The X gene of HBV was amplified by PCR assay, and inserted into the eukaryotic expression vector pCI-neo. The structure of recombinant pCI-neo-X plasmid was proved by restrict endonuclease digestion and sequencing analysis. pCI-neo-X was transfected into cultured rat mesangial cell line in vitro via liposome. HBx expression in transfected mesangial cells was detected by Western blot. The IL-1β and IL-6 mRNA expression in those cells was assayed by semiquantitative RT-PCR. Mesangial cell proliferation was tested by MTT. The results showed that HBx was obviously expressed in cultured mesangial cell line at 36th and 48th h after transfection. The expression of IL-1β and IL-6 mRNA was simultaneously increased. The cell proliferation was also obvious at the same time. It was concluded that HBx gene transfection could induce IL-1β and IL-6 gene expression and mesangial cell proliferation. HBx may play a critical role in mesangial cell proliferation through upregulation of the IL-1β and IL-6 gene expression.
