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Inhibition of Matrix Metalloproteinase-8 Protects Against Sepsis Serum Mediated Leukocyte Adhesion

Xiao Fang1, Shu-Fang Duan1, Zhi-Yuan Hu1

  • 1Department of Burns, The First Affiliated Hospital of Anhui Medical University, Hefei, China.

Frontiers in Medicine
|February 11, 2022
PubMed
Abstract

Insights

Matrix Metalloproteinase-8 (MMP8) is elevated in sepsis and drives leukocyte adhesion. Inhibiting MMP8 reduces this adhesion, suggesting MMP8 as a potential sepsis therapeutic target.

Area of Science:

  • Sepsis Pathophysiology
  • Molecular Biology
  • Immunology

Background:

  • Sepsis is characterized by increased leukocyte adhesion and elevated matrix Metalloproteinase-8 (MMP8) expression.
  • MMP8 expression in sepsis is linked to poor patient prognosis.
  • The precise role of MMP8 in sepsis-induced leukocyte adhesion requires further investigation.

Purpose of the Study:

  • To investigate the role of MMP8 in sepsis serum-mediated leukocyte adhesion.
  • To determine if MMP8 is a key gene in sepsis progression.
  • To explore MMP8 as a potential therapeutic target for sepsis.

Main Methods:

  • Bioinformatics analysis of sepsis gene expression datasets (GSE64457, GSE65682).
  • Quantification of MMP8, VCAM-1, and ICAM-1 mRNA and protein levels in sepsis patients and cell models.
  • Assessment of leukocyte adhesion to endothelial cells treated with sepsis serum and MMP8 inhibitors.
  • Western blot analysis of key signaling pathway proteins (p38, ERK1/2).

Main Results:

  • MMP8 was identified as a key gene associated with unfavorable prognosis in sepsis patients.
  • Sepsis serum significantly increased leukocyte adhesion, MMP8, VCAM-1, ICAM-1, and p-p38/p-ERK1/2 levels.
  • Inhibition of MMP8 effectively reduced sepsis serum-induced leukocyte adhesion and downstream signaling.

Conclusions:

  • MMP8 plays a critical role in the development of sepsis.
  • Sepsis serum promotes leukocyte adhesion to endothelial cells through MMP8.
  • MMP8 represents a promising therapeutic target for managing sepsis.
Keywords:
MMP8critical burnsleukocyte adhesionsepsisvascular injury

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