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Published on: February 10, 2015
[Effects of antisense RNA of connective tissue growth factor expressing plasmid on rat liver fibrosis]
Cui-hua Lu1, Jing-xian Lu, Guo-ping Hua
1Department of Gastroenterology, Affiliated Hospital of Nantong University, Nantong 226001, China. lucuihua@ntu.edu.cn
Objective:
To observe the effects of antisense RNA of connective tissue growth factor (CTGF) on rat liver fibrosis.
Methods:
Gene recombinant techniques were used to construct a rat antisense RNA of CTGF recombinant plasmid which could be expressed in eukaryotic cells. The recombinant plasmids were encapsulated with lipofectamine and then transducted into a carbon tetrachloride (CCl4) induced rat liver fibrosis model. Expression of CTGF was assessed by RT-PCR, Western blot and immunohistochemistry. Immunohistochemistry was used to identify type I and III collagens. HE stained liver slides were used for pathological study.
Results:
The mRNA and protein expression of CTGF in the fibrotic liver transfected with antisense-CTGF were significantly decreased compared with those of the controls (P<0.01). The depositions of type I and type III collagens were also decreased (P<0.05). Antisense-CTGF also minimized the pathological fibrosis in the rat livers (P<0.01).
Conclusion:
The results demonstrate that the antisense RNA of CTGF recombinant plasmid has certain effects in preventing liver fibrosis and makes it a possible candidate for use in future gene therapy.
Insights
Antisense RNA targeting connective tissue growth factor (CTGF) significantly reduced liver fibrosis in rats by decreasing CTGF expression and collagen deposition. This suggests potential for gene therapy in treating liver fibrosis.
Area of Science:
- Molecular Biology
- Hepatology
- Gene Therapy
Context:
- Liver fibrosis is a significant health concern characterized by excessive extracellular matrix deposition.
- Connective tissue growth factor (CTGF) plays a crucial role in the pathogenesis of liver fibrosis.
- Developing effective therapeutic strategies for liver fibrosis remains a critical challenge.
Purpose:
- To investigate the therapeutic potential of antisense RNA targeting connective tissue growth factor (CTGF) in a rat model of liver fibrosis.
Summary:
- A recombinant plasmid encoding antisense RNA for CTGF was constructed and delivered to rats with carbon tetrachloride-induced liver fibrosis using lipofection.
- Messenger RNA and protein levels of CTGF, as well as the deposition of type I and III collagens, were significantly reduced in rats treated with antisense-CTGF.
- Histopathological analysis revealed a significant minimization of liver fibrosis following antisense-CTGF treatment.
Impact:
- The study demonstrates that antisense RNA targeting CTGF can effectively ameliorate liver fibrosis in a preclinical model.
- These findings highlight the potential of CTGF-targeted gene therapy as a novel therapeutic approach for liver fibrosis.
