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Related Experiment Videos

Background and indications for protein A-based extracorporeal immunoadsorption.

G Matic1, T Bosch, W Ramlow

  • 1Labor Müller, Rostock, Germany.

Therapeutic Apheresis : Official Journal of the International Society for Apheresis and the Japanese Society for Apheresis
|January 10, 2002
PubMed
Summary

Protein A (SPA) is a Staphylococcus aureus component used in extracorporeal immunoadsorption therapies. Approved for rheumatoid arthritis and other immune disorders, SPA offers therapeutic potential for various autoimmune and alloantibody-related conditions.

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Area of Science:

  • Biochemistry
  • Immunology
  • Medical Technology

Background:

  • Protein A (SPA), a cell wall component of Staphylococcus aureus, is widely utilized due to its strong binding affinity to human immunoglobulins.
  • Its applications span diagnostic, research, and therapeutic uses, particularly in extracorporeal immunoadsorption.

Purpose of the Study:

  • To review the historical development and key properties of Protein A (SPA).
  • To discuss the current indications for SPA-based extracorporeal immunoadsorption therapies.
  • To explore both approved and off-label therapeutic applications of SPA.

Main Methods:

  • Literature review of historical developments and properties of Protein A (SPA).
  • Analysis of available data and personal experience regarding SPA-based extracorporeal therapies.

Related Experiment Videos

  • Discussion of FDA-approved and off-label indications for SPA immunoadsorption.

    • Main Results:

    • Protein A (SPA) is a well-established molecule with significant applications in immunoadsorption.
    • Two primary SPA-based systems, SPA-silica (Prosorba) and SPA-Sepharose (Immunosorba), are FDA-approved for specific autoimmune conditions.
    • SPA demonstrates potential in treating a range of immune disorders characterized by autoantibodies and alloantibody formation.

    Conclusions:

    • Protein A (SPA) remains a valuable tool in medical therapy, particularly for immune-mediated diseases.
    • Extracorporeal immunoadsorption using SPA offers therapeutic options for conditions like rheumatoid arthritis, idiopathic thrombocytopenic purpura, and hemophilia with inhibitors.
    • Further exploration of SPA's efficacy in other autoimmune and alloantibody-related conditions is warranted.