Cited by 95Ocular Diseases and Behçet’s SyndromeAutoimmune Neurological Disorders and TreatmentsSystemic Lupus Erythematosus Research

The Role of Anti-α-Enolase Autoantibodies in Pathogenicity of Autoimmune-Mediated Retinopathy

MAGRYS, AGNIESZKA, ANEKONDA, THIMMAPPA, REN, GAOYING, ADAMUS, GRAZYNA·2007·Journal of Clinical Immunology

Abstract

Autoantibodies against alpha-enolase, a glycolytic enzyme, have been frequently associated with visual loss and retinal degeneration in patients with autoimmune and cancer-associated retinopathy; however their role in the pathogenicity of retinopathy has not been fully explained. Thus, we examined the causative role of anti-enolase antibodies on retinal cells. In the in vitro studies reported here, we found that Enol-1 monoclonal antibody against alpha-enolase significantly inhibited the catalytic function of enolase, which resulted in the depletion of glycolytic ATP. Enol-1 significantly increased intracellular Ca(2+), which led to Bax translocation to the mitochondria, and the release of cytochrome c into the cytoplasm--events that correlated with the initiation of apoptosis. Normal IgG did not induce intracellular calcium or reduce cytosolic ATP. L-type voltage-gated calcium channel blockers (nifedipine, D-cis-diltiazem, and verapamil) were effective in blocking the Ab-induced intracellular Ca(2+) rise and induction of Bax. Based on these findings we propose that chronic access of autoantibodies to the retina results in the inhibition of enolase catalytic function, depletion of ATP, and elevation in intracellular Ca(2+), leading to deregulation of glycolysis in retinal neurons and their destruction.

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Crossref · 10.1007/s10875-006-9065-8

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  • All eye tissues except the lens contain antibodies.

    “All eye tissues except for the lens contain antibodies, and antibodies have been shown to be capable of mediating ocular pathology in multiple contexts21–25.”

    From Investigation of Cas9 Antibodies in the Human Eye (2022) · cites this paper as [22]

  • Antibodies have been shown to be capable of mediating ocular pathology in multiple contexts.

    “All eye tissues except for the lens contain antibodies, and antibodies have been shown to be capable of mediating ocular pathology in multiple contexts21–25.”

    From Investigation of Cas9 Antibodies in the Human Eye (2022) · cites this paper as [22]

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Authors
MAGRYS, A., ANEKONDA, T., REN, G., & ADAMUS, G.
Affiliations
Oregon Health & Science University (US)
Corresponding author
ADAMUS, GRAZYNA
Venue
Journal of Clinical Immunology
Published
2007-01-19
Volume
27
Issue
2
Pages
181-192
ISSN
  • 0271-9142 (ISSN-L)
  • 1573-2592
OpenAlex
W1969411640
Cited by
95
References
60
Citations by year
2026: 3 · 2025: 2 · 2024: 4 · 2023: 3 · 2022: 5 · 2021: 4 · 2020: 4 · 2019: 5 · 2018: 3 · 2017: 9 · 2016: 5 · 2015: 6 · 2014: 6 · 2013: 6 · 2012: 6
FWCI
6.42
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Clinical Immunology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Eye Institute (EY 13053, R01EY013053)
Topics
  • Health Sciences › Medicine › Ophthalmology › Ocular Diseases and Behçet’s Syndrome
  • Health Sciences › Medicine › Neurology › Autoimmune Neurological Disorders and Treatments
  • Health Sciences › Medicine › Rheumatology › Systemic Lupus Erythematosus Research
Keywords
autoimmune retinopathy, intracellular calcium, Bax translocation, cytochrome c release, apoptosis, L-type calcium channels, nifedipine, diltiazem, verapamil, retinal neurons, retinal degeneration, vision loss
MeSH terms
Adenosine Triphosphate, Animals, Antibodies, Monoclonal, Autoantibodies, Autoantigens, Calcium, Cell Line, Glycolysis, Neurons, Phosphopyruvate Hydratase, Retinal Diseases, Blotting, Western, Apoptosis, Rats

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