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Characteristics of TIMP1, CD63, and β1-Integrin and the Functional Impact of Their Interaction in Cancer

Beatriz Laís Justo1, Miriam Galvonas Jasiulionis1

  • 1Department of Pharmacology, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), Rua Pedro de Toledo 669, 5 Floor, São Paulo 04039-032, Brazil.

International Journal of Molecular Sciences
|September 10, 2021
PubMed

Insights

Tissue Inhibitor of Metalloproteases 1 (TIMP-1) has dual roles in cancer, inhibiting matrix metalloproteases but also promoting tumor growth. This review explores its complex functions and regulation via the TIMP-1/CD63/β1-integrin complex.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cancer Research

Background:

  • Tissue Inhibitor of Metalloproteases 1 (TIMP-1) traditionally inhibits matrix metalloproteases, impacting tumor invasion and metastasis.
  • Paradoxically, elevated TIMP-1 expression correlates with poor prognosis and reduced survival in various cancers.
  • TIMP-1 also influences cell growth, proliferation, and survival through signaling pathways.

Purpose of the Study:

  • To review literature on the pleiotropic functions of TIMP-1.
  • To elucidate the role of the TIMP-1/CD63/β1-integrin membrane complex in physiological and cancer contexts.
  • To explore N-glycosylation as a regulatory mechanism for TIMP-1 functions.

Main Methods:

  • Literature review of studies on TIMP-1, CD63, and β1-integrin.
  • Analysis of the formation and function of the TIMP-1/CD63/β1-integrin complex.
  • Examination of N-glycosylation's role in TIMP-1 regulation.

Main Results:

  • TIMP-1 forms a functional complex with CD63 and β1-integrin.
  • This complex plays roles in both normal cellular processes and cancer progression.
  • N-glycosylation is identified as a key regulatory mechanism for TIMP-1's diverse functions.

Conclusions:

  • TIMP-1 exhibits complex, context-dependent roles in cancer beyond matrix metalloprotease inhibition.
  • The TIMP-1/CD63/β1-integrin complex is a significant mediator of TIMP-1 activity.
  • Understanding TIMP-1 regulation, particularly via N-glycosylation, is crucial for therapeutic strategies.
Keywords:
CD63N-glycosylationTIMP-1cancerβ1-integrin

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