Astrocyte elevated gene-1 (AEG-1) is induced by lipopolysaccharide as toll-like receptor 4 (TLR4) ligand and regulates TLR4 signalling

Imtiaz I.E. Khuda, Naoki Koide, Abu S.M. Noman, Jargalsaikhan Dagvadorj, Gantsetseg Tumurkhuu, Yoshikazu Naiki, Takayuki Komatsu, Tomoaki Yoshida, Takashi Yokochi

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

Astrocyte elevated gene-1 (AEG-1) is induced by human immunodeficiency virus 1 (HIV-1) infection and involved in tumour progression, migration and invasion as a nuclear factor-κB (NF-κB) -dependent gene. The involvement of AEG-1 on lipopolysaccharide (LPS) -induced proinflammatory cytokine production was examined. AEG-1 was induced via NF-κB activation in LPS-stimulated U937 human promonocytic cells. AEG-1 induced by LPS subsequently regulated NF-κB activation. The prevention of AEG-1 expression inhibited LPS-induced tumour necrosis factor-α and prostaglandin E2 production. The AEG-1 activation was not induced by toll-like receptor ligands other than LPS. Therefore, AEG-1 was suggested to be a LPS-responsive gene and involved in LPS-induced inflammatory response.

Original languageEnglish
Pages (from-to)e700-e706
JournalImmunology
Volume128
Issue number1 PART 2
DOIs
Publication statusPublished - 09-2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology

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