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Related Experiment Videos

Nonhuman primates express human leukemia-associated antigens.

J M Pesando, T A Conrad

    Blood
    |November 1, 1984
    PubMed
    Summary

    Nonhuman primates share leukemia-associated antigens (CALLA and gp24) with humans, found on comparable tissues like bone marrow and granulocytes. This suggests primates are valuable models for testing leukemia therapies and reagents before human application.

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    Area of Science:

    • Immunology
    • Oncology
    • Primate Research

    Background:

    • Leukemia-associated antigens, including common acute lymphoblastic leukemia antigen (CALLA) and gp24, are targets for cancer research.
    • Understanding the distribution of these antigens in nonhuman primates is crucial for translational research.

    Purpose of the Study:

    • To investigate the presence and distribution of CALLA and gp24 antigens in nonhuman primates.
    • To evaluate the utility of nonhuman primates as models for studying leukemia-associated antigens and their therapeutic implications.

    Main Methods:

    • Serologic studies using murine monoclonal antibodies against CALLA and gp24.
    • Analysis of adherent cell populations from skin, lung, and bone marrow.
    • Radioimmune precipitation experiments to confirm antigen identity.

    Main Results:

    • Leukemia-associated antigens (CALLA and gp24) were detected on comparable tissues in humans and four nonhuman primate species (Macaca fascicularis, M. mulatta, M. nemestrina, and Papio cynocephalus).
    • Granulocytes from both humans and nonhuman primates bound CALLA- and gp24-specific antibodies.
    • Radioimmune precipitation confirmed the identity of these antigens.

    Conclusions:

    • Nonhuman primates exhibit similar expression patterns of leukemia-associated antigens as humans.
    • Nonhuman primates serve as suitable models for screening serologic reagents for potential toxicity on normal tissues.
    • Primate models can aid in assessing the role of antigen-positive stromal cells in bone marrow reconstitution post-transplantation.

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