[Establishment and application of a high-throughput drug screening model based on COL1A1 promoter for anti-liver fibrosis]

Yao Xue Xue Bao. 2015 Feb;50(2):169-73.
[Article in Chinese]

Abstract

For screening the potential drugs as anti-liver fibrosis candidates, we established a high- throughput drug screening cell model based on COL1A1 promoter. The activity of COL1A1 promoter and luciferase reporter gene can be elevated by TGF-β1, and inhibited by candidate drugs. We constructed a recombined plasmid with COL1A1 promoter and luciferase reporter gene pGL4.17, the activity of COL1A1 promoter was reflected by fluorescence intensity. COL1A1 promoter activity was detected by Dual-Luciferase Reporter Assay System, it came that the relative luciferase activity of COL1A1 promoter was 15.98 times higher than that of control group induced by TGF-β1, showing the recombined plasmid could be used in cell model. The recombined plasmid was transfected into human hepatic stellate cells LX2, detected the effect of potential drugs, and obtained a stable expression system through stable transfection and monoclonal cell culture. A sample which could reduce COL1A1 promoter activity signally by our cell model, decreased collagen I mRNA and protein expression detected by real-time RT-PCR and Western blotting. It indicates this novel cell model can be used in high-throughput drug screening of potential anti-liver fibrosis drugs.

MeSH terms

  • Collagen Type I / genetics*
  • Collagen Type I, alpha 1 Chain
  • Drug Evaluation, Preclinical / methods*
  • Genes, Reporter
  • Hepatic Stellate Cells
  • High-Throughput Screening Assays*
  • Humans
  • Liver Cirrhosis / drug therapy*
  • Luciferases
  • Plasmids
  • Promoter Regions, Genetic*
  • RNA, Messenger
  • Transfection
  • Transforming Growth Factor beta1 / pharmacology

Substances

  • Collagen Type I
  • Collagen Type I, alpha 1 Chain
  • RNA, Messenger
  • Transforming Growth Factor beta1
  • Luciferases