PMID- 21300913 OWN - NLM STAT- MEDLINE DCOM- 20110414 LR - 20231213 IS - 1540-9538 (Electronic) IS - 0022-1007 (Print) IS - 0022-1007 (Linking) VI - 208 IP - 2 DP - 2011 Feb 14 TI - Aire-dependent production of XCL1 mediates medullary accumulation of thymic dendritic cells and contributes to regulatory T cell development. PG - 383-94 LID - 10.1084/jem.20102327 [doi] AB - Dendritic cells (DCs) in the thymus (tDCs) are predominantly accumulated in the medulla and contribute to the establishment of self-tolerance. However, how the medullary accumulation of tDCs is regulated and involved in self-tolerance is unclear. We show that the chemokine receptor XCR1 is expressed by tDCs, whereas medullary thymic epithelial cells (mTECs) express the ligand XCL1. XCL1-deficient mice are defective in the medullary accumulation of tDCs and the thymic generation of naturally occurring regulatory T cells (nT reg cells). Thymocytes from XCL1-deficient mice elicit dacryoadenitis in nude mice. mTEC expression of XCL1, tDC medullary accumulation, and nT reg cell generation are diminished in Aire-deficient mice. These results indicate that the XCL1-mediated medullary accumulation of tDCs contributes to nT reg cell development and is regulated by Aire. FAU - Lei, Yu AU - Lei Y AD - Division of Experimental Immunology, Institute for Genome Research, University of Tokushima, Tokushima, Japan. FAU - Ripen, Adiratna Mat AU - Ripen AM FAU - Ishimaru, Naozumi AU - Ishimaru N FAU - Ohigashi, Izumi AU - Ohigashi I FAU - Nagasawa, Takashi AU - Nagasawa T FAU - Jeker, Lukas T AU - Jeker LT FAU - Bosl, Michael R AU - Bosl MR FAU - Hollander, Georg A AU - Hollander GA FAU - Hayashi, Yoshio AU - Hayashi Y FAU - Malefyt, Rene de Waal AU - Malefyt Rde W FAU - Nitta, Takeshi AU - Nitta T FAU - Takahama, Yousuke AU - Takahama Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110207 PL - United States TA - J Exp Med JT - The Journal of experimental medicine JID - 2985109R RN - 0 (Chemokines) RN - 0 (Chemokines, C) RN - 0 (Transcription Factors) RN - 0 (Xcl1 protein, mouse) SB - IM MH - Animals MH - Chemokines/immunology MH - Chemokines, C/*biosynthesis/genetics MH - Chemotaxis/immunology MH - Dacryocystitis/etiology/immunology MH - Dendritic Cells/cytology/*immunology MH - Flow Cytometry MH - Fluorescent Antibody Technique MH - Image Processing, Computer-Assisted MH - Mice MH - Mice, Nude MH - Microscopy, Confocal MH - Reverse Transcriptase Polymerase Chain Reaction MH - Self Tolerance/*immunology MH - T-Lymphocytes, Regulatory/cytology/*immunology MH - Thymus Gland/cytology/*immunology MH - Transcription Factors/*metabolism MH - AIRE Protein PMC - PMC3039864 EDAT- 2011/02/09 06:00 MHDA- 2011/04/16 06:00 PMCR- 2011/08/14 CRDT- 2011/02/09 06:00 PHST- 2011/02/09 06:00 [entrez] PHST- 2011/02/09 06:00 [pubmed] PHST- 2011/04/16 06:00 [medline] PHST- 2011/08/14 00:00 [pmc-release] AID - jem.20102327 [pii] AID - 20102327 [pii] AID - 10.1084/jem.20102327 [doi] PST - ppublish SO - J Exp Med. 2011 Feb 14;208(2):383-94. doi: 10.1084/jem.20102327. Epub 2011 Feb 7.