Autoantigenicity of Actin

  • Ian R. Mackay
  • Roberto Martinez-Neira
  • Senga Whittingham
  • Dan Nicolau
  • Ban-Hock Toh
Part of the Protein Reviews book series (PRON, volume 8)

Actin is one of the most abundant of the constituents of the proteome. In its polymeric filamentous form, actin is a critical component of the cytoskeleton, so influencing cell shape and motility. It is viewed by the research community from several different perspectives. For example, cell biologists view actin as the major element in a complex suite of molecules that maintain cell form and mediate cellular motility responses to various stimuli, e.g., chemotaxis, covered in detail in other chapters of this book. Analytical biochemists take advantage of the cellular abundance and high conservation of structure of actin to use it as a “housekeeping” protein control for particular functional studies on other elements of the proteome. Immunopathologists and diagnostic serologists are interested in the propensity of actin to behave as an autoantigenic molecule, which it does in virtually just one disease, autoimmune hepatitis (AIH). This chapter is written from this third perspective. The chapter is introduced by a brief survey of immunity and autoimmunity, and the nature of the disease AIH in which F-actin functions as an autoantigen. The chapter examines anti-F-actin in terms of its origins and significance, and possible role in immune-mediated destruction of hepatocytes. Functional effects in vitro of anti-F-actin (delivered as Fabs of IgG) on actin motility are demonstrable using an actin-myosin system in a motility chamber.


Autoimmune Hepatitis Congenital Heart Block Actin Cable Filament Velocity Smooth Muscle Antibody 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Ian R. Mackay
    • 1
  • Roberto Martinez-Neira
    • 2
  • Senga Whittingham
    • 1
  • Dan Nicolau
    • 3
  • Ban-Hock Toh
    • 4
  1. 1.Department of Biochemistry and Molecular BiologyMonash UniversityClaytonAustralia
  2. 2.Muscle Research Unit, Bosch Institute, School of Medical SciencesThe University of SydneySydneyAustralia
  3. 3.Department of Electrical Engineering and ElectronicsLiverpoolUK
  4. 4.Centre for Inflammatory Diseases, Monash Institute of Medical ResearchMonash UniversityClaytonAustralia

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