Abstract:
:Numerous studies have shown that autoantigens may be clustered in the blebs of apoptotic cells. However, it is not yet clear in what circumstances apoptotic cells could be immunogenic rather than tolerogenic when interacting with macrophages, dendritic cells, and B cells. In order to further study this question we compared immunization of high load of syngeneic late apoptotic cells in two genetically close pro-autoimmune mice strains: MRL/MpJ and MRL/MpJ-Fas(lpr). We show that high apoptotic load could accelerate the generation of anti-dsDNA and anticardiolipin, and the extent of kidney disease, in MRL/MpJ-Fas(lpr) but could not generate autoimmunity in MRL/MpJ. Thus, in this model, a high load of apoptotic cells could augment the autoimmune response in established autoimmunity, but did not generate de novo autoimmune response in pro-autoimmune mice. Taken together with previous observations, apoptotic cell load may modify autoimmune disease generating either immune inhibition and down regulation of autoimmunity or immune stimulation and acceleration of an autoimmune disease.
journal_name
Autoimmunityjournal_title
Autoimmunityauthors
Shoshan Y,Mevorach Ddoi
10.1080/08916930410001666622subject
Has Abstractpub_date
2004-03-01 00:00:00pages
103-9issue
2eissn
0891-6934issn
1607-842Xjournal_volume
37pub_type
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