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Golgi autoantibodies and autoantigens
G Renier1, M C Rousselet, F Carrere
1Laboratoire d'Immunopathologie, CHU, Créteil, France.
Journal of Autoimmunity
|February 1, 1994
Summary
Researchers identified rare human autoantibodies targeting the Golgi apparatus, a cellular organelle. These autoantibodies bind to Golgi membranes, recognizing diverse proteins across different cell types.
Area of Science:
- Immunology
- Cell Biology
- Molecular Biology
Background:
- Autoantibodies against cellular components are common, but those targeting the Golgi apparatus are rare.
- Limited information exists on autoantibodies specifically directed at Golgi apparatus antigens.
Observation:
- Analysis of thousands of routine autoantibody samples revealed only three human sera with anti-Golgi activity.
- Immunoelectron microscopy confirmed antibody binding exclusively to Golgi apparatus cisternal and vesicular membranes.
Findings:
- The anti-Golgi antibodies reacted with distinct antigens of 230, 150, and 80 kDa.
- Antigen targets were conserved across tissues and cell lines, suggesting evolutionary stability.
- Antibody binding was confirmed as true antibody activity using F(ab')2 fragments.
Implications:
- These findings suggest that multiple, distinct autoantigens within the Golgi apparatus can be recognized by autoantibodies.
- Understanding these autoantigens may provide insights into autoimmune diseases and cellular function.
- Further research into Golgi-associated autoantigens could reveal novel diagnostic or therapeutic targets.