Expanding the Activity of Tissue Inhibitors of Metalloproteinase (TIMP)-1 against Surface-Anchored Metalloproteinases by the Replacement of Its C-Terminal Domain: Implications for Anti-Cancer Effects

PLoS One. 2015 Aug 26;10(8):e0136384. doi: 10.1371/journal.pone.0136384. eCollection 2015.

Abstract

Tissue inhibitors of metalloproteinases (TIMPs) are the endogenous inhibitors of the matrix metalloproteinases (MMPs) and a disintegrin and metalloproteinases (ADAMs). TIMP molecules are made up of two domains: an N-terminal domain that associates with the catalytic cleft of the metalloproteinases (MP) and a smaller C-terminal domain whose role in MP association is still poorly understood. This work is aimed at investigating the role of the C-terminal domain in MP selectivity. In this study, we replaced the C-terminal domain of TIMP-1 with those of TIMP-2, -3 and -4 to create a series of "T1:TX" chimeras. The affinity of the chimeras against ADAM10, ADAM17, MMP14 and MMP19 was investigated. We can show that replacement of the C-terminal domain by those of other TIMPs dramatically increased the affinity of TIMP-1 for some MPs. Furthermore, the chimeras were able to suppress TNF-α and HB-EGF shedding in cell-based setting. Unlike TIMP-1, T1:TX chimeras had no growth-promoting activity. Instead, the chimeras were able to inhibit cell migration and development in several cancer cell lines. Our findings have broadened the prospect of TIMPs as cancer therapeutics. The approach could form the basis of a new strategy for future TIMP engineering.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Blotting, Western
  • Cell Movement / drug effects
  • Cell Proliferation / drug effects*
  • Cells, Cultured
  • Heparin-binding EGF-like Growth Factor / chemistry
  • Humans
  • Matrix Metalloproteinase Inhibitors / pharmacology*
  • Matrix Metalloproteinases / chemistry*
  • Matrix Metalloproteinases / metabolism
  • Molecular Sequence Data
  • Protein Structure, Tertiary
  • Sequence Homology, Amino Acid
  • Tissue Inhibitor of Metalloproteinases / pharmacology*
  • Tumor Necrosis Factor-alpha / antagonists & inhibitors
  • Wound Healing / drug effects

Substances

  • Heparin-binding EGF-like Growth Factor
  • Matrix Metalloproteinase Inhibitors
  • Tissue Inhibitor of Metalloproteinases
  • Tumor Necrosis Factor-alpha
  • Matrix Metalloproteinases

Grants and funding

The authors thank the National Natural Science Foundation of China (grant 31270850) and the Research Development Fund, XJTLU for their generous funding of this project.