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Systematic discovery and evaluation of complement inhibitors.

N Bauman, J A Brockman, B S Pease

    Immunopharmacology
    |December 1, 1981
    PubMed
    Summary
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    This study outlines a systematic method for identifying complement inhibitors. The process involves in vitro and in vivo testing to find compounds effective against the complement system and related inflammatory conditions.

    Area of Science:

    • Immunology
    • Pharmacology
    • Biochemistry

    Background:

    • The complement system is crucial in innate immunity.
    • Dysregulation of complement contributes to various diseases.
    • Identifying complement inhibitors is vital for therapeutic development.

    Purpose of the Study:

    • To establish a structured approach for discovering novel complement inhibitors.
    • To evaluate compound efficacy across different stages of complement activation.
    • To assess the in vivo effects of inhibitors on complement-dependent pathologies.

    Main Methods:

    • Hemolytic assays to detect inhibitors of C1, late complement components (EAC142 lysis), and complement-dependent lysis (CVF-induced).
    • In vitro testing against dilute and undiluted human serum.

    Related Experiment Videos

  • In vivo evaluation of compounds against serum complement and complement-mediated lesions (Forssman vasculitis, Arthus phenomenon, Forssman shock).
  • Quantitation methods for assessing lesion severity.

    • Main Results:

    • A tiered screening strategy was developed.
    • Compounds showing activity in initial assays were further validated.
    • The methods allowed for the assessment of both direct complement inhibition and effects on complement-dependent inflammation.

    Conclusions:

    • The presented methods provide a comprehensive framework for identifying and characterizing complement inhibitors.
    • This systematic approach facilitates the discovery of potential therapeutics for complement-mediated diseases.
    • The study demonstrates the utility of combined in vitro and in vivo assays for evaluating complement inhibitors.