Hypersensitivity reactions to asparaginase in mice are mediated
- Slides: 8
Hypersensitivity reactions to asparaginase in mice are mediated by anti-asparaginase Ig. E and Ig. G and the immunoglobulin receptors FcεRI and FcγRIII by Sanjay Rathod, Manda Ramsey, Mary V. Relling, Fred D. Finkelman, and Christian A. Fernandez haematol Volume 104(2): 319 -329 January 31, 2019 © 2019 by Ferrata Storti Foundation
ASNase is recognized ex vivo by B cells, neutrophils, macrophages/monocytes, and basophils after sensitization. Sanjay Rathod et al. Haematologica 2019; 104: 319 -329 © 2019 by Ferrata Storti Foundation
Ex vivo ASNase binding to basophils is dependent on FcγRIII and FcεRI. Sanjay Rathod et al. Haematologica 2019; 104: 319 -329 © 2019 by Ferrata Storti Foundation
Frequencies of CD 4+ Tregs, B cells, and basophils increase in blood after ASNase sensitization. Sanjay Rathod et al. Haematologica 2019; 104: 319 -329 © 2019 by Ferrata Storti Foundation
ASNase-sensitized mice develop hypersensitivity reactions when challenged. Sanjay Rathod et al. Haematologica 2019; 104: 319 -329 © 2019 by Ferrata Storti Foundation
The in vivo depletion of CD 4+ T cells but not B cells prevents ASNase-mediated hypersensitivity reactions. Sanjay Rathod et al. Haematologica 2019; 104: 319 -329 © 2019 by Ferrata Storti Foundation
Ex vivo ASNase activates basophils in an Ig. G- and Ig. E-dependent manner. Sanjay Rathod et al. Haematologica 2019; 104: 319 -329 © 2019 by Ferrata Storti Foundation
FcεRI and FcγRIII play a role in ASNase hypersensitivity. Sanjay Rathod et al. Haematologica 2019; 104: 319 -329 © 2019 by Ferrata Storti Foundation