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Total chemical synthesis of the N-terminal domain of TIMP2

Yuanmei Sun1, Yuqi Zhang1, Chunmao He1

  • 1School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China. hecm@scut.edu.cn.

Organic & Biomolecular Chemistry
|February 27, 2026
PubMed

Insights

Researchers synthesized the N-terminal domain of tissue inhibitor of metalloproteinases 2 (N-TIMP2) protein. This provides a new tool to study how N-TIMP2 interacts with matrix metalloproteinase 14 (MMP14) and inhibits tumor cell metastasis.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Oncology

Background:

  • Tumor cell migration and invasion are key drivers of cancer mortality.
  • Matrix metalloproteinase 14 (MMP14) promotes tumor metastasis.
  • Tissue inhibitor of metalloproteinases 2 (TIMP2) naturally inhibits MMP14, but its precise mechanism is unclear, hindering drug development.

Purpose of the Study:

  • To synthesize the N-terminal domain of TIMP2 (N-TIMP2) protein.
  • To provide a tool for investigating the interaction between N-TIMP2 and MMP14.
  • To elucidate the molecular mechanisms underlying MMP14 inhibition by TIMP2.

Main Methods:

  • Utilized a four-segment, three-ligation total chemical synthesis strategy.
  • Confirmed successful protein refolding of N-TIMP2.
  • Prepared N-TIMP2 for interaction studies with MMP14.

Main Results:

  • Successfully synthesized and refolded the N-terminal domain of TIMP2 (N-TIMP2).
  • Obtained a stable and correctly folded N-TIMP2 protein.
  • Established a novel tool for mechanistic studies.

Conclusions:

  • The chemically synthesized N-TIMP2 is a viable tool for studying MMP14 inhibition.
  • This work paves the way for understanding TIMP2-MMP14 interactions.
  • Further research can leverage N-TIMP2 to develop targeted anti-metastasis therapies.

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