Pro-inflammatory cytokine-induced matrix metalloproteinase-1 (mmp-1) secretion in human pancreatic periacinar myofibroblasts

Kazuhito Tasaki, Yutaka Shintani, Takao Saotome, Akira Andoh, Yoshihide Fujiyama, Shigenari Hozawa, Tadao Bamba

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Matrix metalloproteinases (MMPs) are the proteases involved in the degradation of the extracellular matrix. MMP-1 is thought to be one of the key enzymes in fibrolysis, a process closely related to tissue remodeling. In the present study, we investigated MMP-1 secretion from human pancreatic periacinar myofibroblasts in response to pro-inflammatory cytokines IL-1βand TNF-α. We also attempted to clarify the intracellular signaling pathways mediating the cytokine-induced MMP-1 secretion. MMP-1 secretion was measured by an enzyme-linked immunosorbent assay. MMP-1 molecules were analyzed by Western blotting. MMP-1 mRNA expression was evaluated by Northern blotting. IL-1β and TNF-α stimulated the MMP-1 secretion in a dose- and time-dependent manner. Ninety percent of MMP-1 was secreted as inactive form (pro-MMP-1). The effects of IL-1β and TNF-αwere significantly inhibited by PD98059 MEK/ ERK inhibitor). In contrast, SB203580 (p38 MAPK inhibitor), GF109203X (PKC inhibitor), and PDTC (NF-κB inhibitor) did not alter the MMP-1 secretion induced by IL-1β and TNF-α. These effects were also observed at the mRNA level. In conclusion, in human pancreatic periaci-nar myofibroblasts, MMP-1 secretion was regulated by the pro-inflammatory cytokines via the MEK/ERK cascade. Thus, human pancreatic periacinar myofibroblasts may play an important role in the remodeling of damaged pancreatic tissue in chronic pancreatitis via MMP-1 secretion.

Original languageEnglish
Pages (from-to)414-421
Number of pages8
JournalPancreatology
Volume3
Issue number5
DOIs
Publication statusPublished - 2003
Externally publishedYes

Fingerprint

Matrix Metalloproteinase 1
Myofibroblasts
Cytokines
Interleukin-1
Mitogen-Activated Protein Kinase Kinases
Messenger RNA
Chronic Pancreatitis
p38 Mitogen-Activated Protein Kinases
Matrix Metalloproteinases
Northern Blotting
Extracellular Matrix
Peptide Hydrolases
Western Blotting
Enzyme-Linked Immunosorbent Assay

Keywords

  • Interleukin-1β
  • Matrix metalloproteinases
  • MEK
  • Mitogen-activated protein kinase
  • Tumor necrosis factor-α

ASJC Scopus subject areas

  • Endocrinology
  • Gastroenterology

Cite this

Pro-inflammatory cytokine-induced matrix metalloproteinase-1 (mmp-1) secretion in human pancreatic periacinar myofibroblasts. / Tasaki, Kazuhito; Shintani, Yutaka; Saotome, Takao; Andoh, Akira; Fujiyama, Yoshihide; Hozawa, Shigenari; Bamba, Tadao.

In: Pancreatology, Vol. 3, No. 5, 2003, p. 414-421.

Research output: Contribution to journalArticle

Tasaki, Kazuhito ; Shintani, Yutaka ; Saotome, Takao ; Andoh, Akira ; Fujiyama, Yoshihide ; Hozawa, Shigenari ; Bamba, Tadao. / Pro-inflammatory cytokine-induced matrix metalloproteinase-1 (mmp-1) secretion in human pancreatic periacinar myofibroblasts. In: Pancreatology. 2003 ; Vol. 3, No. 5. pp. 414-421.
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