Interleukin 4 production by human amnion epithelial cells and regulation of its activity by glycosaminoglycan binding

C. A. Jones, K. A. Williams, J. J. Finlay-Jones, P. H. Hart

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

The pro-inflammatory molecules, tumor necrosis factor α (TNFα), interleukin 1 (IL-1), interleukin 6 (IL-6), and prostaglandin E2 (PGE2), are postulated to have a role in human pregnancy and parturition. The ability of interleukin 4 (IL-4) to suppress the production of TNFα, IL-1, IL-6, and PGE2 by activated monocytes prompted us to investigate a possible regulatory role for IL-4 in human gestation. Immunohistochemical techniques were used to show that human amnion epithelium stained positively for IL-4. Tissue from both the first (n = 5) and third (n = 46) trimester expressed immunoreactive IL-4, which was detected by the use of four antihuman IL-4 monoclonal antibodies. Analysis of mRNA by reverse transcriptase-polymerase chain reaction (RT-PCR) on RNA extracts of amnion epithelial cells indicated that they were the source of IL-4. One of the anti-IL-4 antibodies used stained IL-4 protein associated with the basement membrane of the amnion epithelium. The mechanism of this association was investigated. IL-4 was shown to be a heparin-binding cytokine, which would enable it to bind to components of the extracellular matrix. Thus, this study identified a previously undescribed cellular source of IL-4, implicating a role for IL-4 in human gestation. Additionally, glycosaminoglycan binding may regulate IL-4 activity in vivo.

Original languageEnglish
Pages (from-to)839-847
Number of pages9
JournalBiology of Reproduction
Volume52
Issue number4
DOIs
Publication statusPublished - 27 Mar 1995
Externally publishedYes

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Amnion
Glycosaminoglycans
Interleukin-4
Epithelial Cells
Interleukin-1
Dinoprostone
Pregnancy
Interleukin-6
Epithelium
Tumor Necrosis Factor-alpha
Reverse Transcriptase Polymerase Chain Reaction
Basement Membrane
Extracellular Matrix
Heparin
Monocytes
Monoclonal Antibodies

Cite this

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title = "Interleukin 4 production by human amnion epithelial cells and regulation of its activity by glycosaminoglycan binding",
abstract = "The pro-inflammatory molecules, tumor necrosis factor α (TNFα), interleukin 1 (IL-1), interleukin 6 (IL-6), and prostaglandin E2 (PGE2), are postulated to have a role in human pregnancy and parturition. The ability of interleukin 4 (IL-4) to suppress the production of TNFα, IL-1, IL-6, and PGE2 by activated monocytes prompted us to investigate a possible regulatory role for IL-4 in human gestation. Immunohistochemical techniques were used to show that human amnion epithelium stained positively for IL-4. Tissue from both the first (n = 5) and third (n = 46) trimester expressed immunoreactive IL-4, which was detected by the use of four antihuman IL-4 monoclonal antibodies. Analysis of mRNA by reverse transcriptase-polymerase chain reaction (RT-PCR) on RNA extracts of amnion epithelial cells indicated that they were the source of IL-4. One of the anti-IL-4 antibodies used stained IL-4 protein associated with the basement membrane of the amnion epithelium. The mechanism of this association was investigated. IL-4 was shown to be a heparin-binding cytokine, which would enable it to bind to components of the extracellular matrix. Thus, this study identified a previously undescribed cellular source of IL-4, implicating a role for IL-4 in human gestation. Additionally, glycosaminoglycan binding may regulate IL-4 activity in vivo.",
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Interleukin 4 production by human amnion epithelial cells and regulation of its activity by glycosaminoglycan binding. / Jones, C. A.; Williams, K. A.; Finlay-Jones, J. J.; Hart, P. H.

In: Biology of Reproduction, Vol. 52, No. 4, 27.03.1995, p. 839-847.

Research output: Contribution to journalArticle

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