کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2831963 | 1163821 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Application of specific cell permeable cathepsin G inhibitors resulted in reduced antigen processing in primary dendritic cells Application of specific cell permeable cathepsin G inhibitors resulted in reduced antigen processing in primary dendritic cells](/preview/png/2831963.png)
The serine protease cathepsin G (CatG) is expressed in primary antigen-presenting cells and regulates autoantigen processing in CatG pre-loaded fibroblasts. To further investigate the function of CatG in the major histocompatibility complex (MHC) class II loading compartments, a specific, cell permeable CatG-inhibitor is needed. In this study, several CatG-inhibitors were tested for their ability to penetrate the cell membrane of peripheral blood mononuclear cells (PBMC). We find that the commercially available reversible CatG-specific inhibitor I (CatG inhibitor) and the irreversible Suc-Val-Pro-PheP (OPh)2 (Suc-VPF) are both cell permeable and specifically inhibit intracellular CatG in the PBMC. Furthermore, selective inhibition of CatG resulted in reduced tetanus toxin C-fragment (TTC) and hemagglutinin (HA) processing and presentation to CD4+ T cells. We conclude that these CatG inhibitors can be used for both antigen-processing studies and for modulation of T cell response in situ and in vivo.
Journal: Molecular Immunology - Volume 46, Issue 15, September 2009, Pages 2994–2999