Expression of the receptors for the C5a anaphylatoxin, interleukin-8 and FMLP by human astrocytes and microglia

Marie Lacy, Jennifer Jones, Scott R. Whittemore, David L. Haviland, Rick A. Wetsel, Scott R. Barnum

Research output: Contribution to journalArticle

156 Scopus citations

Abstract

The expression of chemotactic receptors in the central nervous system is largely unexplored. In this study, we examined human astrocytes and microglia as well as the conditionally immortalized human astrocyte cell line HSC2 for expression of the C5a-anaphylatoxin receptor (C5aR), the interleukin-8 receptor (IL-8R) and the f-Met-Leu-Phe receptor (FMLPR). Using flow cytometry, indirect immunofluorescence and RT-PCR analysis, we demonstrated that astrocytes, microglia and HSC2 cells contain specific RNA and express surface protein for all three chemotactic receptors. These are the first studies to demonstrate definitively the expression of these chemotactic receptors on astrocytes and microglia, thereby expanding the types of cells known to express chemotactic receptors. Moreover, these data suggest that these chemotactic receptors may play an important role in mediating the inflammatory response and perhaps other yet undescribed biological phenomena in the central nervous system.

Original languageEnglish (US)
Pages (from-to)71-78
Number of pages8
JournalJournal of Neuroimmunology
Volume61
Issue number1
DOIs
StatePublished - Aug 1995

Keywords

  • Astrocytes
  • C5aR
  • FMLPR
  • Interleukin-8R
  • Microglia

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Neurology
  • Clinical Neurology

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