• 1. Institute of Applied Mechanics and Biomedical Engineering, Shanxi Key Lab. of Material Strength & Structural Impact, Taiyuan University of Technology, Taiyuan 030024, China;
  • 2. Excimer Laser Department, Shanxi Eye Hospital, Taiyuan 030023, China;
CHENWeiyi, Email: chenweiyi211@163.com
Export PDF Favorites Scan Get Citation

The aim of this article is to study the effect of tumor necrosis factor alpha (TNF-α) on the expression of matrix metalloproteinases (MMPs) and tissue inhibitors of matrix metalloproteinases (TIMPs) in keratoconus fibroblasts in vitro. Normal cornea and keratoconus fibroblasts were extracted using enzyme digestion method and were cultured in the medium containing TNF-α (0, 10 and 100 ng/mL). The expression of MMPs proteins in the supernatant of corneal fibroblasts and the expression of TIMPs in the normal cornea and keratoconus fibroblasts were detected by Western blot and real-time quantitative polymerase chain reaction respectively. The active form of MMP1 could be detected in the supernatant of keratoconus fibroblasts and upregulated by TNF-α. TNF-α could increase the protein expression of MMP2, MMP3, MMP9 in the supernatant of keratoconus fibroblasts and decrease the gene expression of TIMP1, TIMP2 in keratoconus fibroblasts. The increased MMPs and the decreased TIMPs can increase the degradation of the extracellular matrix. TNF-α may play an important role in the occurrence and development of keratoconus by regulating the expression of MMPs/TIMPs.

Citation: FENGPengfei, LIXiaona, CHENWeiyi, HERui, WANGXiaojun. Effects of Tumor Necrosis Factor Alpha on the Expression of Matrix Metalloproteinases and Tissue Inhibitors of Matrix Metalloproteinases in Keratoconus Fibroblasts. Journal of Biomedical Engineering, 2016, 33(6): 1139-1144. doi: 10.7507/1001-5515.20160181 Copy

  • Previous Article

    Effects of Different Preservation Methods on Mechanical Properties of Mouse Femur
  • Next Article

    Application of 18F-fluorodeoxyglucose Metabolic Imaging in Diagnosis and Treatment of Cervical Cancer