α1-Antitrypsin can increase insulin-induced mitogenesis in various fibroblast and epithelial cell lines

Qing Bai She, Jagat J. Mukherjee, Karan S. Crilly, Zoltan Kiss

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

α1-Antitrypsin (AT), the archetypal member of the superfamily of serine proteinase inhibitors, inhibits leukocyte elastase activity and thereby can prevent lung damage. Here we show that in fibroblasts from human fetal lung and mouse embryo as well as in certain epithelial cells AT can also enhance the stimulatory effects of insulin on DNA synthesis and cell proliferation. Warming of AT at a moderate (41°C) temperature for a longer time (21 h) or at a higher (65°C) temperature for 30 min before treatment increased its stimulatory effects on both DNA synthesis and activating phosphorylation of p42/p44 mitogen-activated protein kinases. The results suggest that AT may promote regeneration of damaged tissues under pathophysiological conditions which are associated with fever. Copyright (C) 2000 Federation of European Biochemical Societies.

Original languageEnglish
Pages (from-to)33-36
Number of pages4
JournalFEBS Letters
Volume473
Issue number1
DOIs
StatePublished - May 4 2000

Bibliographical note

Funding Information:
This work was supported by SOTA TEC Fund 343-6027.

Keywords

  • DNA synthesis
  • Fibroblast
  • Insulin
  • Mitogen-activated protein kinase
  • α-Antitrypsin

ASJC Scopus subject areas

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Cell Biology

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