A Humanized Mouse Model Coupled with Computational Analysis Identifies Potent Glycolipid Agonist of Invariant NKT Cells
作者:Noemi A. Saavedra-Avila、Natalia B. Pigni、Donald R. Caldwell、Florencia Chena-Becerra、Jose Intano、Tony W. Ng、Divya Chennamadhavuni、Steven A. Porcelli、José A. Gascón、Amy R. Howell
DOI:10.1021/acschembio.3c00736
日期:2024.4.19
studies, no alternative glycolipid has yet emerged as a superior clinical candidate. One reason for the slow progress in this area is that standard mousemodels do not accurately reflect the specific ligand recognition by human iNKT cells and their requirements for activation. Here we evaluated a series of KRN7000 analogues using a recently developed humanizedmousemodel that expresses a human αTCR chain
Synthesis of diglycosylceramides and evaluation of their iNKT cell stimulatory properties
作者:Yang Liu、Shenglou Deng、Li Bai、Stefan Freigang、Jochen Mattner、Luc Teyton、Albert Bendelac、Paul B. Savage
DOI:10.1016/j.bmcl.2007.12.067
日期:2008.5
Stimulation of iNKT cells is highly dependent on the structures of the glycolipids presented by CD1d. Furthermore, antigen processing and CD1d loading in lysosomes play central roles in controlling the stimulatory properties of glycolipid antigens. Previously, we determined that substitution at C6 '' on alpha-galactosylceramides did not significantly impact stimulatory properties; however, it was not known if substitution at this position influenced lysosomal processing of oligoglycosylceramides. We have prepared a series of mono- and di-galactosylceramides to observe the impact of C6 '' substitution on glycosidase truncation of these glycolipids. We found that substitution did not significantly impact glycosidase activity or loading into CD1d. (c) 2007 Elsevier Ltd. All rights reserved.