PMID- 10657634 OWN - NLM STAT- MEDLINE DCOM- 20000309 LR - 20190515 IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 164 IP - 4 DP - 2000 Feb 15 TI - Transcription factor PU.1 is necessary for development of thymic and myeloid progenitor-derived dendritic cells. PG - 1855-61 AB - Dendritic cells (DCs) are a heterogeneous population of cells that are specialized for Ag processing and presentation. These cells are believed to derive from both myeloid- and lymphoid-committed precursors. Normal human PBMC-derived, human CD14+ cell (monocyte)-derived, and mouse hematopoietic progenitor-derived DCs were shown to express the hematopoietic cell-restricted, ets family transcription factor PU.1. These populations represent myeloid progenitor-derived DCs. Hematopoietic progenitor cells from PU.1 gene-disrupted (null) mice were unable to generate MHC class IIhigh, CD11c+ myeloid-derived DCs in vitro. Mouse thymic DCs are proposed to be derived from a committed lymphoid progenitor cell that can give rise to T cells as well as DCs. Previously, we showed that CD4 and CD8 T cells developed in PU.1 null mice in a delayed manner and in reduced number. We examined the thymus of 10- to 12-day-old PU.1 null mice and found no evidence of DEC-205+, MIDC-8+ DCs in this tissue. Our findings indicate that PU.1 regulates the development of both thymic and myeloid progenitor-derived populations of DCs, and expand its known role in hematopoietic development. FAU - Anderson, K L AU - Anderson KL AD - Department of Molecular Medicine, Scripps Research Institute, La Jolla, CA 92037, USA. FAU - Perkin, H AU - Perkin H FAU - Surh, C D AU - Surh CD FAU - Venturini, S AU - Venturini S FAU - Maki, R A AU - Maki RA FAU - Torbett, B E AU - Torbett BE LA - eng GR - AI38385/AI/NIAID NIH HHS/United States GR - DK49886/DK/NIDDK NIH HHS/United States GR - DK549381/DK/NIDDK NIH HHS/United States GR - etc. PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Proto-Oncogene Proteins) RN - 0 (Trans-Activators) RN - 0 (proto-oncogene protein Spi-1) SB - IM MH - Animals MH - Cell Differentiation/genetics/immunology MH - Cells, Cultured MH - Dendritic Cells/*cytology/metabolism MH - Hematopoietic Stem Cells/*cytology/immunology/metabolism/pathology MH - Humans MH - Immunologic Deficiency Syndromes/genetics/metabolism/pathology MH - Macrophages/pathology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Proto-Oncogene Proteins/deficiency/genetics/*physiology MH - Thymus Gland/*cytology/immunology/pathology MH - Trans-Activators/deficiency/genetics/*physiology EDAT- 2000/02/05 09:00 MHDA- 2000/03/11 09:00 CRDT- 2000/02/05 09:00 PHST- 2000/02/05 09:00 [pubmed] PHST- 2000/03/11 09:00 [medline] PHST- 2000/02/05 09:00 [entrez] AID - ji_v164n4p1855 [pii] AID - 10.4049/jimmunol.164.4.1855 [doi] PST - ppublish SO - J Immunol. 2000 Feb 15;164(4):1855-61. doi: 10.4049/jimmunol.164.4.1855.