Protein Profiling of the Secretome of FcεRI Activated RBL-2H3.1 Cells
(ندگان)پدیدآور
Sadroddiny, EsmaeilAi, JafarCarroll, KathleenPham, Trong KhoaWright, PhillipPathak, AshutoshHelm, Birgitنوع مدرک
TextOriginal Article
زبان مدرک
Englishچکیده
Background: Secretory proteins of IgE receptor activated mast cells and basophils play a pivotal role in the generation of immediate and long term immune responses in allergy and type I hypersensitivity. Objective: The present study aims to generate a 2-D map and profile of proteins secreted from a high secretory variant of the rat basophilic leukemia cell line, RBL-2H3.1, which in view of the difficulty associated with gaining adequate numbers of pure primary mast cell and basophiles, represents an accepted model system for the study and standardization of the methodology to characterize the secretome of these cell types. Methods: A 2-D map of secretory proteins was generated by 2-D PAGE and a shotgun mass spectrometric approach carried out for protein identi fication. Results: Study resulted into identification of 299 proteins released from resting and IgE receptor activated RBL-2H3.1 cells after 90 s, 30 min and 3 h antigen challenge. Further sequence analysis identified ~53% of total proteins as secretory proteins which could be attributed to classical and non-classical secretory pathways. Additionally, functional classification of classic secretory proteins verified the presence of proteins belonged to cytokines, receptors, membrane proteins, lysosomal proteins and proteins associated with specific sub-cellular localizations such as endoplasmic reticulum, mitochondria, nucleus, cytoplasm and ribosome. According to this data the presence of some secretory proteins such as cytokines (e.g. MCP-2, PF-4, CSF-1 and TGF-β1) are all subject to Ag challenge which may point to their importance toward pathogenesis in allergic diseases. Conclusion: In view of both a beneficial and adverse role of mast cell mediators in health and disease, an identification of temporal changes in the secretory pattern may form the basis for future tailor made intervention strategies that may enable us to harvest the therapeutic potential inherent in mast cell exocytosis while inhibiting/attenuating negative outcomes.
کلید واژگان
BasophilFcεRI
IgE
mast cell
RBL-2H3.1
Secretome
شماره نشریه
1تاریخ نشر
2012-03-011390-12-11
ناشر
Shiraz Institute for Cancer Researchسازمان پدید آورنده
Department of Tissue Engineering, School of Advanced Medical Technologies, Tehran University of Medical Sciences, Tehran, IranDepartment of Tissue Engineering, School of Advanced Medical Technologies, Tehran University of Medical Sciences, Tehran, Iran
Manchester Centre for Integrative Systems Biology, Manchester Interdisciplinary Biocentre, The University of Manchester
Biological and Environmental System Group, Department of Chemical and Process Engineering, The University of Sheffield, UK
Biological and Environmental System Group, Department of Chemical and Process Engineering, The University of Sheffield, UK
Department of Biology, The Pennsylvania State University, University Park, USA
Department of Molecular Biology and Biotechnology, The University of Sheffield, Sheffield, UK
شاپا
1735-13831735-367X