PMID- 21469122 OWN - NLM STAT- MEDLINE DCOM- 20110624 LR - 20171116 IS - 1521-4141 (Electronic) IS - 0014-2980 (Linking) VI - 41 IP - 5 DP - 2011 May TI - Notch signaling regulates the development of a novel type of Thy1-expressing dendritic cell in the thymus. PG - 1309-20 LID - 10.1002/eji.201041159 [doi] AB - Dendritic cells (DCs) are specialized antigen-presenting cells (APCs) required for T-cell activation and are classified into several subtypes by phenotypic and functional characteristics. However, it remains unclear if distinct transcription factors control the development of each DC subpopulation. In this report, we demonstrate that Notch signaling controls the development of a novel DC subtype that expresses Thy1 (Thy1(+) DCs). Overstimulation of bone marrow cells with the Notch ligand Delta-like 1 promoted the development of Thy1(+) DCs. Thy1(+) DCs are characterized as CD11c(+) MHC class II(+) NK1.1(-) B220(-) CD8alpha(+) , and are present in the thymus but not in the spleen and lymph nodes. Thymic Thy1(+) DCs are able to capture exogenous proteins and delete CD4(+) CD8(+) T cells. Transplantation experiments demonstrated that CD44(+) CD25(-) and CD44(+) CD25(+) thymocytes can differentiate into Thy1(+) DCs. Recombination signal binding protein for immunoglobulin kappa J region (RBP-J) deficiency in lineage-negative bone marrow cells, but not CD11c(+) cells, disrupted Thy1(+) DC development in the thymus. Our data indicate that Notch signaling controls the development of a novel type of Thy1-expressing DC in the thymus that possibly controls negative selection, and indicates that there may be highly regulated, differential transcriptional control of DC development. Furthermore, our findings suggest that Notch signaling regulates T-cell development not only by intrinsically inducing T-cell lineage-specific gene programs, but also by regulating negative selection through Thy1(+) DCs. CI - Copyright (c) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. FAU - Ishifune, Chieko AU - Ishifune C AD - Department of Immunology and Parasitology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan. FAU - Maekawa, Yoichi AU - Maekawa Y FAU - Nishida, Jun AU - Nishida J FAU - Kitamura, Akiko AU - Kitamura A FAU - Tanigaki, Kenji AU - Tanigaki K FAU - Yagita, Hideo AU - Yagita H FAU - Yasutomo, Koji AU - Yasutomo K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110412 PL - Germany TA - Eur J Immunol JT - European journal of immunology JID - 1273201 RN - 0 (CD11c Antigen) RN - 0 (Hyaluronan Receptors) RN - 0 (Immunoglobulin J Recombination Signal Sequence-Binding Protein) RN - 0 (Interleukin-2 Receptor alpha Subunit) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Membrane Proteins) RN - 0 (Rbpj protein, mouse) RN - 0 (Receptors, Notch) RN - 0 (Thy-1 Antigens) RN - 0 (delta protein) SB - IM MH - Animals MH - Antigen Presentation MH - Blotting, Western MH - Bone Marrow Cells/metabolism MH - CD11c Antigen/analysis MH - Cell Differentiation MH - Dendritic Cells/classification/cytology/*immunology MH - Flow Cytometry MH - Hyaluronan Receptors MH - Immunoglobulin J Recombination Signal Sequence-Binding Protein/deficiency MH - Interleukin-2 Receptor alpha Subunit/analysis MH - Intracellular Signaling Peptides and Proteins MH - Lymphocyte Activation MH - Membrane Proteins/pharmacology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - Polymerase Chain Reaction MH - Receptors, Notch/genetics/*metabolism MH - Signal Transduction MH - T-Lymphocytes MH - Thy-1 Antigens/*genetics/metabolism MH - Thymus Gland/cytology/embryology/*immunology EDAT- 2011/04/07 06:00 MHDA- 2011/06/28 06:00 CRDT- 2011/04/07 06:00 PHST- 2010/10/12 00:00 [received] PHST- 2011/01/21 00:00 [revised] PHST- 2011/02/16 00:00 [accepted] PHST- 2011/04/07 06:00 [entrez] PHST- 2011/04/07 06:00 [pubmed] PHST- 2011/06/28 06:00 [medline] AID - 10.1002/eji.201041159 [doi] PST - ppublish SO - Eur J Immunol. 2011 May;41(5):1309-20. doi: 10.1002/eji.201041159. Epub 2011 Apr 12.