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New insights into fibrosis from the ECM degradation perspective: the macrophage-MMP-ECM interaction

Xiangyu Zhao1, Jiayin Chen1, Hongxiang Sun2,3

  • 1Department of Gastroenterology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Cell & Bioscience
|July 27, 2022
PubMed

Insights

Fibrosis involves excessive extracellular matrix (ECM) buildup. Impaired ECM degradation, particularly macrophage-MMP-ECM interactions, presents a potential therapeutic target for fibrotic diseases.

Area of Science:

  • Pathology
  • Immunology
  • Biochemistry

Background:

  • Fibrosis, a hallmark of chronic inflammatory diseases, leads to organ damage and mortality.
  • It is characterized by excessive extracellular matrix (ECM) accumulation, stemming from imbalanced ECM production and degradation.
  • While ECM overproduction is studied, impaired ECM degradation is increasingly recognized as crucial in fibrosis.

Purpose of the Study:

  • To elucidate the role of the extracellular matrix (ECM) in fibrosis development.
  • To highlight the macrophage-matrix metalloproteinase (MMP)-ECM interaction in fibrogenesis.
  • To identify the macrophage-MMP-ECM axis as a potential therapeutic target for fibrosis.

Main Methods:

  • Literature review and synthesis of existing research on fibrosis.
  • Analysis of the molecular mechanisms regulating ECM homeostasis.
  • Focus on the interplay between macrophages, MMPs, and TIMPs in ECM remodeling.

Main Results:

  • The excessive accumulation of ECM is a key feature of fibrosis.
  • Impaired degradation of the ECM, mediated by the MMP/TIMP system, is a critical factor.
  • Macrophages play a significant role in regulating ECM turnover.

Conclusions:

  • The macrophage-MMP-ECM interaction is central to fibrogenesis.
  • Targeting this interaction offers a promising therapeutic strategy for treating fibrotic diseases.
  • Further research into this pathway could lead to novel anti-fibrotic therapies.
Keywords:
Extracellular matrixFibrosisMacrophageMatricryptinMatrix metalloprotease

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