PMID- 23290520 OWN - NLM STAT- MEDLINE DCOM- 20130321 LR - 20221109 IS - 1097-4180 (Electronic) IS - 1074-7613 (Print) IS - 1074-7613 (Linking) VI - 38 IP - 1 DP - 2013 Jan 24 TI - Perivascular mast cells dynamically probe cutaneous blood vessels to capture immunoglobulin E. PG - 166-75 LID - S1074-7613(12)00551-1 [pii] LID - 10.1016/j.immuni.2012.09.022 [doi] AB - Mast cells are tissue-resident immune cells that play a central role in allergic disease. These contributions are largely dependent on the acquisition of antigen-specific immunoglobulin E (IgE). Despite this requirement, studies of mast cell and IgE interactions have overlooked the mechanism by which mast cells acquire IgE from the blood. To address this gap, we developed reporter IgE molecules and employed imaging techniques to study mast cell function in situ. Our data demonstrate that skin mast cells exhibit selective uptake of IgE based on perivascular positioning. Furthermore, perivascular mast cells acquire IgE by extending cell processes across the vessel wall to capture luminal IgE. These data demonstrate how tissue mast cells acquire IgE and reveal a strategy by which extravascular cells monitor blood contents to capture molecules central to cellular function. CI - Copyright (c) 2013 Elsevier Inc. All rights reserved. FAU - Cheng, Laurence E AU - Cheng LE AD - Department of Pediatrics, University of California, San Francisco, San Francisco, CA 94143, USA. FAU - Hartmann, Karin AU - Hartmann K FAU - Roers, Axel AU - Roers A FAU - Krummel, Matthew F AU - Krummel MF FAU - Locksley, Richard M AU - Locksley RM LA - eng GR - AI095319/AI/NIAID NIH HHS/United States GR - P01 AI078869/AI/NIAID NIH HHS/United States GR - P01 HL024136/HL/NHLBI NIH HHS/United States GR - P30 DK063720/DK/NIDDK NIH HHS/United States GR - T32 AI007334/AI/NIAID NIH HHS/United States GR - AI026918/AI/NIAID NIH HHS/United States GR - HHMI/Howard Hughes Medical Institute/United States GR - HD044331/HD/NICHD NIH HHS/United States GR - R01 AI026918/AI/NIAID NIH HHS/United States GR - AI30663/AI/NIAID NIH HHS/United States GR - K08 AI095319/AI/NIAID NIH HHS/United States GR - T32 HD044331/HD/NICHD NIH HHS/United States GR - AI078869/AI/NIAID NIH HHS/United States GR - R37 AI026918/AI/NIAID NIH HHS/United States GR - R01 AI030663/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20130103 PL - United States TA - Immunity JT - Immunity JID - 9432918 RN - 0 (Receptors, IgE) RN - 37341-29-0 (Immunoglobulin E) SB - IM CIN - Nat Rev Immunol. 2013 Feb;13(2):68-9. PMID: 23334246 MH - Animals MH - Cell Tracking MH - Immunoglobulin E/*immunology/metabolism MH - Immunophenotyping MH - Mast Cells/*immunology/metabolism MH - Mice MH - Peritoneal Cavity/cytology MH - Peritoneum/immunology MH - Protein Binding/immunology MH - Receptors, IgE/immunology/metabolism MH - Skin/*immunology/metabolism PMC - PMC3576928 MID - NIHMS441576 COIS- The authors declare no financial conflicts of interest. EDAT- 2013/01/08 06:00 MHDA- 2013/03/22 06:00 PMCR- 2013/07/24 CRDT- 2013/01/08 06:00 PHST- 2012/01/31 00:00 [received] PHST- 2012/09/26 00:00 [accepted] PHST- 2013/01/08 06:00 [entrez] PHST- 2013/01/08 06:00 [pubmed] PHST- 2013/03/22 06:00 [medline] PHST- 2013/07/24 00:00 [pmc-release] AID - S1074-7613(12)00551-1 [pii] AID - 10.1016/j.immuni.2012.09.022 [doi] PST - ppublish SO - Immunity. 2013 Jan 24;38(1):166-75. doi: 10.1016/j.immuni.2012.09.022. Epub 2013 Jan 3.