Autoantigens targeted in systemic lupus erythematosus are clustered in two populations of surface structures on apoptotic keratinocytes.
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- L A Casciola-Rosen
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205.
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- G Anhalt
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205.
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- A Rosen
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205.
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<jats:p>Systemic lupus erythematosus is a multisystem autoimmune disease in which the autoantibody response targets a variety of autoantigens of diverse subcellular location. We show here that these autoantigens are clustered in two distinct populations of blebs at the surface of apoptotic cells. The population of smaller blebs contains fragmented endoplasmic reticulum (ER) and ribosomes, as well as the ribonucleoprotein, Ro. The larger blebs (apoptotic bodies) contain nucleosomal DNA, Ro, La, and the small nuclear ribonucleoproteins. These autoantigen clusters have in common their proximity to the ER and nuclear membranes, sites of increased generation of reactive oxygen species in apoptotic cells. Oxidative modification at these sites may be a mechanism that unites this diverse group of molecules together as autoantigens.</jats:p>
収録刊行物
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- The Journal of experimental medicine
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The Journal of experimental medicine 179 (4), 1317-1330, 1994-04-01
Rockefeller University Press
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詳細情報 詳細情報について
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- CRID
- 1363670318473278592
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- NII論文ID
- 30017431887
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- NII書誌ID
- AA00697559
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- ISSN
- 15409538
- 00221007
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