Differential expression of pathogen-recognition molecules between dendritic cell subsets revealed by plasma membrane proteomic analysis
Elodie Segura, Eugene Kapp, Nishma Gupta, June Wong, Justin Lim, Hong Ji, William R Heath, Richard Simpson, Jose A Villadangos
MOLECULAR IMMUNOLOGY | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2010
Dendritic cells (DC) are comprised of several subsets with distinct functions, differing in their capacity to respond to pathogen products. To gain novel insights into their pathogen specificity, we compared the protein composition of the plasma membrane of CD8+ and CD8- DC, directly isolated from mouse spleens. Differences in protein expression were determined using semi-quantitative high-resolution mass spectrometry of label-free plasma membrane-enriched fractions. Our comparative proteomic analysis detected over 1500 proteins, revealing broad differences in expression of pathogen receptors, adhesion molecules and T-cell regulatory molecules. Many of these findings were validated using flo..View full abstract
This work is supported by the National Health and Medical Research Council of Australia. J.A.V. is a Scholar of the Leukemia and Lymphoma Society. E.S. is supported by a Marie Curie Fellowship from the European Commission.