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Updated: Jun 26, 2025
Antibody Profiling by Luciferase Immunoprecipitation Systems LIPS
Published on: October 7, 2009
Circulating Autoantibody Profiling Identifies LIMS1 as a Potential Target for Pathogenic Autoimmunity in pathologic
1Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, People's Republic of China; NHC Key Laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai, People's Republic of China; Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, People's Republic of China; State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, People's Republic of China.
Pathologic myopia, a leading cause of blindness, may stem from an autoimmune response. Researchers identified anti-LIM homeobox protein 1 (LIMS1) autoantibodies that disrupt retinal cells, suggesting a new cause for myopic macular degeneration.
Area of Science:
- Ophthalmology
- Immunology
- Pathogenesis Research
Background:
- High myopia is a significant global cause of blindness.
- Pathologic myopia, with its characteristic myopic macular degeneration, is particularly detrimental.
- The underlying pathogenesis of pathologic myopia remains largely unknown.
Purpose of the Study:
- To investigate the potential autoimmune etiology of pathologic myopia.
- To identify specific autoantibodies associated with high myopia and myopic macular degeneration.
- To elucidate the mechanism by which identified autoantibodies contribute to disease pathology.
Main Methods:
- Serological autoantibody profiling using a HuProt array.
- Validation of identified autoantibodies via a customized focused microarray.
- Assessment of serum IgG effects on retinal pigment epithelial cells and inflammatory mediators.
Main Results:
- 18 potential autoantibodies were identified, with anti-LIM homeobox protein 1 (LIMS1) autoantibody being validated.
- Anti-LIMS1 autoantibody was specifically linked to pathologic myopia with myopic macular degeneration.
- Serum IgG from patients disrupted retinal pigment epithelial cell barrier function and induced inflammation, effects attenuated by anti-LIMS1 autoantibody depletion.
Conclusions:
- A previously unrecognized autoimmune etiology for myopic macular degeneration in pathologic myopia is uncovered.
- Anti-LIMS1 autoantibody is implicated as a key factor in the pathogenesis of pathologic myopia.
- These findings open new avenues for understanding and potentially treating this severe form of myopia.
