DIAGNOSIS AND TREATMENT OF ACUTE REJECTION CAUSED BY DONOR SPECIFIC ANTI-MICA ANTIBODY IN A HIGHLY SENSITIZED, PEDIATRIC RENAL TRANSPLANT RECIPIENT (MAJOR-HISTOCOMPATIBILITY-COMPLEX (MHC) CLASS-I RELATED CHAIN A ANTIGEN)

2008 ◽  
Vol 86 (Supplement) ◽  
pp. 622-623
Author(s):  
S Narayan ◽  
E Tsai ◽  
J Q. Zhang ◽  
E Reed ◽  
R Ettenger
2010 ◽  
Vol 15 (1) ◽  
pp. E1-E7 ◽  
Author(s):  
Shoba Narayan ◽  
Eileen W. Tsai ◽  
Qiuheng Zhang ◽  
William D. Wallace ◽  
Elaine F. Reed ◽  
...  

2015 ◽  
Vol 167 (3-4) ◽  
pp. 166-170
Author(s):  
Larissa Sarmento dos Santos ◽  
Juliana Pinto da Silva Mol ◽  
Auricélio Alves de Macedo ◽  
Ana Patrícia Carvalho Silva ◽  
Diego Luiz dos Santos Ribeiro ◽  
...  

1997 ◽  
Vol 8 (1) ◽  
pp. 47-57 ◽  
Author(s):  
E Stang ◽  
J Kartenbeck ◽  
R G Parton

Simian virus 40 (SV40) has been shown to enter mammalian cells via uncoated plasma membrane invaginations. Viral particles subsequently appear within the endoplasmic reticulum. In the present study, we have examined the surface binding and internalization of SV40 by immunoelectron microscopy. We show that SV40 associates with surface pits which have the characteristics of caveolae and are labeled with antibodies to the caveolar marker protein, caveolin-1. SV40 is believed to use major histocompatibility complex (MHC) class I molecules as cell surface receptors. Using a number of MHC class I-specific monoclonal antibodies, we found that both viral infection and association of virus with caveolae were strongly reduced by preincubation with anti-MHC class I antibodies. Because binding of SV40 to MHC class I molecules may induce clustering, we investigated whether antibody cross-linked class I molecules also redistributed to caveolae. Clusters of MHC class I molecules were indeed shown to be specifically associated with caveolin-labeled surface pits. Taken together, the results suggest that SV40 may make use of MHC class I molecule clustering and the caveolae pathway to enter mammalian cells.


1993 ◽  
Vol 13 (3) ◽  
pp. 1554-1564
Author(s):  
A G Frauman ◽  
P Chu ◽  
L C Harrison

The overexpression of major histocompatibility complex (MHC) class I molecules in endocrine epithelial cells is an early feature of autoimmune thyroid disease and insulin-dependent diabetes mellitus, which may reflect a cellular response, e.g., to viruses or toxins. Evidence from a transgenic model in pancreatic beta cells suggests that MHC class I overexpression could play an independent role in endocrine cell destruction. We demonstrate in this study that the transgenic overexpression of an allogeneic MHC class I protein (H-2Kb) linked to the rat thyroglobulin promoter, in H-2Kk mice homozygous for the transgene, leads to thyrocyte atrophy, hypothyroidism, growth retardation, and death. Thyrocyte atrophy occurred in the absence of lymphocytic infiltration. Tolerance to allogeneic class I was revealed by the reduced ability of primed lymphocytes from transgenic mice to lyse H-2Kb target cells in vitro. This nonimmune form of thyrocyte destruction and hypothyroidism recapitulates the beta-cell destruction and diabetes that results from transgenic overexpression of MHC class I molecules in pancreatic beta cells. Thus, we conclude that overexpression of MHC class I molecules may be a general mechanism that directly impairs endocrine epithelial cell viability.


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