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Immunoreactive cytokines within primates

W Ahne1, A Mayr, H Wiesner

  • 1Institute of Zoology, Fishery Biology and Fish Diseases, Faculty of Veterinary Medicine, University of Munich, Germany.

Zentralblatt Fur Veterinarmedizin. Reihe B. Journal of Veterinary Medicine. Series B
|December 1, 1996
PubMed
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Monoclonal antibodies detected specific cytokines in primates but not other mammals, revealing close immunophysiological relationships among primates. This study highlights species-specific cytokine recognition in immunology research.

Area of Science:

  • Immunology
  • Comparative genomics
  • Mammalian physiology

Background:

  • Cytokine detection is crucial for understanding immune responses.
  • Monoclonal antibodies (mAbs) are key tools in cytokine research.
  • Investigating cytokine expression across species can reveal evolutionary relationships.

Purpose of the Study:

  • To investigate the cross-reactivity of human cytokine-specific mAbs in various mammalian species.
  • To explore potential immunophysiological similarities and differences across diverse mammalian groups.
  • To determine if cytokine profiles reflect evolutionary relatedness.

Main Methods:

  • Peripheral blood mononuclear cells (PBMCs) were isolated from multiple mammalian species including primates, rodents, carnivores, artiodactyls, and perissodactyls.

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  • PBMCs were stimulated with mitogens: lipopolysaccharide (LPS) and phytohemagglutinin (PHA).
  • Enzyme-linked immunosorbent assay (ELISA) was used with mAbs against human cytokines (TNF-alpha, IL-1 alpha, IL-2, IL-6, IFN-gamma) to detect cytokine immunoreactivity.

    • Main Results:

    • Cytokine immunoreactivity was detected using human-specific mAbs exclusively in primate PBMCs (humans, orangutans, gorillas, baboons).
    • The mAbs did not recognize or detect cytokines in the non-primate species tested (rodents, carnivores, artiodactyls, perissodactyls).
    • This suggests significant differences in cytokine structure or epitope presentation between primates and other mammals.

    Conclusions:

    • The findings underscore a close immunophysiological relationship within the primate group.
    • Species-specific recognition highlights the limitations of using human-centric immunological tools in broader comparative studies.
    • Cytokine profiles can serve as markers for evolutionary divergence and relatedness among mammals.