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Upregulation of major histocompatibility complex class II, CD83, CD64, and CD14 on polymorphonuclear neutrophils

Bahaa Kenawy Abuel-Hussien Abdel-Salam1, Hossam Ebaid

  • 1Zoology Department, Faculty of Science, Minia University, Minia, Egypt. Bahaa_2000_1999@yahoo.com

Journal of Microbiology, Immunology, and Infection = Wei Mian Yu Gan Ran Za Zhi
|March 4, 2009
PubMed
Abstract

Insights

Interleukin-15 (IL-15) stimulation increases major histocompatibility complex (MHC) class II and other key molecules on polymorphonuclear neutrophils (PMNs). This suggests PMNs play a role in both innate and acquired immunity.

Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Polymorphonuclear neutrophils (PMNs) are crucial in the initial defense against bacterial infections.
  • Emerging evidence suggests PMNs possess antigen-presenting capabilities.

Purpose of the Study:

  • To investigate the expression of major histocompatibility complex (MHC) class II on PMNs.
  • To determine the effect of interleukin-15 (IL-15) on PMN surface molecules, including CD83, CD64, and CD14.

Main Methods:

  • PMNs were isolated from healthy donor blood.
  • Cells were cultured for 48 hours with and without IL-15.
  • Surface molecule expression was analyzed using cytofluorometry.

Main Results:

  • IL-15 stimulation significantly increased MHC class II expression on PMNs.
  • Upregulation of costimulatory molecule CD83 was observed.
  • Expression of immunoglobulin G receptor CD64 and lipopolysaccharide receptor CD14 also increased.

Conclusions:

  • The observed expression of MHC class II, CD83, CD64, and CD14 indicates a potential dual role for PMNs.
  • PMNs may bridge innate and adaptive immune responses.

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