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Expression of interleukin-1 alpha, interleukin-1 beta, and an interleukin-1 receptor antagonist in human retinal pigment epithelial cells.

Publication ,  Journal Article
Jaffe, GJ; Van Le, L; Valea, F; Haskill, S; Roberts, W; Arend, WP; Stuart, A; Peters, WP
Published in: Exp Eye Res
August 1992

mRNA expression and protein production of interleukin-1 alpha, interleukin-1 beta and intracellular and secreted forms of an interleukin-1 receptor antagonist were measured in visually confluent monolayers of unstimulated cultured human retinal pigment epithelial cells and after cells were stimulated with recombinant cytokines. Using reverse transcription polymerase chain reaction, transcripts for interleukin-1 alpha and interleukin-1 beta were not detected in unstimulated cells from any of six donors whereas mRNA expression for both interleukin-1 alpha and interleukin-1 beta was readily induced in all six cell lines after cells were stimulated with recombinant IL-1 (alpha or beta), tumor necrosis factor alpha, or lipopolysaccharide. The combination of cycloheximide and recombinant interleukin-1 caused a 14-fold enhancement of interleukin-1 alpha and interleukin-1 beta mRNA expression above that observed after cells were stimulated with interleukin-1 alone. After stimulation by interleukin-1, cells produced intracellular interleukin-1 alpha protein, but did not secrete it into medium. In contrast, interleukin-1 beta protein was not detected in cell lysates or conditioned-medium after stimulation with interleukin-1. An intracellular interleukin-1 receptor antagonist was expressed constitutively by human retinal pigment epithelial cells; mRNA transcripts were enhanced in a dose and time dependent manner after cells were exposed to recombinant interleukin-1 or tumor necrosis factor alpha. In contrast, mRNA for a secreted form of the interleukin-1 receptor antagonist was not detected under basal conditions or after cells were stimulated by recombinant cytokines. Interleukin-1 receptor antagonist protein was found primarily in cell lysates; little interleukin-1 receptor antagonist protein was secreted by the cells. The presence of cell-associated interleukin-1 receptor antagonist was confirmed by immunocytochemistry. Levels of cell-associated IL-1 receptor antagonist protein were not significantly influenced by recombinant interleukin-1 or tumor necrosis factor alpha. Endogenous expression of interleukin-1 receptor antagonist may attenuate the effect of exogenous or endogenous interleukin-1, thus providing the RPE cell a means of maintaining interleukin-1 homeostasis in ocular inflammatory disease.

Duke Scholars

Published In

Exp Eye Res

DOI

ISSN

0014-4835

Publication Date

August 1992

Volume

55

Issue

2

Start / End Page

325 / 335

Location

England

Related Subject Headings

  • Tumor Necrosis Factor-alpha
  • Receptors, Interleukin-1
  • Receptors, Antigen, T-Cell
  • RNA, Messenger
  • Pigment Epithelium of Eye
  • Ophthalmology & Optometry
  • Interleukin-1
  • Humans
  • Eye Proteins
  • Cycloheximide
 

Citation

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ICMJE
MLA
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Jaffe, G. J., Van Le, L., Valea, F., Haskill, S., Roberts, W., Arend, W. P., … Peters, W. P. (1992). Expression of interleukin-1 alpha, interleukin-1 beta, and an interleukin-1 receptor antagonist in human retinal pigment epithelial cells. Exp Eye Res, 55(2), 325–335. https://doi.org/10.1016/0014-4835(92)90197-z
Jaffe, G. J., L. Van Le, F. Valea, S. Haskill, W. Roberts, W. P. Arend, A. Stuart, and W. P. Peters. “Expression of interleukin-1 alpha, interleukin-1 beta, and an interleukin-1 receptor antagonist in human retinal pigment epithelial cells.Exp Eye Res 55, no. 2 (August 1992): 325–35. https://doi.org/10.1016/0014-4835(92)90197-z.
Jaffe GJ, Van Le L, Valea F, Haskill S, Roberts W, Arend WP, et al. Expression of interleukin-1 alpha, interleukin-1 beta, and an interleukin-1 receptor antagonist in human retinal pigment epithelial cells. Exp Eye Res. 1992 Aug;55(2):325–35.
Jaffe, G. J., et al. “Expression of interleukin-1 alpha, interleukin-1 beta, and an interleukin-1 receptor antagonist in human retinal pigment epithelial cells.Exp Eye Res, vol. 55, no. 2, Aug. 1992, pp. 325–35. Pubmed, doi:10.1016/0014-4835(92)90197-z.
Jaffe GJ, Van Le L, Valea F, Haskill S, Roberts W, Arend WP, Stuart A, Peters WP. Expression of interleukin-1 alpha, interleukin-1 beta, and an interleukin-1 receptor antagonist in human retinal pigment epithelial cells. Exp Eye Res. 1992 Aug;55(2):325–335.
Journal cover image

Published In

Exp Eye Res

DOI

ISSN

0014-4835

Publication Date

August 1992

Volume

55

Issue

2

Start / End Page

325 / 335

Location

England

Related Subject Headings

  • Tumor Necrosis Factor-alpha
  • Receptors, Interleukin-1
  • Receptors, Antigen, T-Cell
  • RNA, Messenger
  • Pigment Epithelium of Eye
  • Ophthalmology & Optometry
  • Interleukin-1
  • Humans
  • Eye Proteins
  • Cycloheximide