PMID- 23983226 OWN - NLM STAT- MEDLINE DCOM- 20140326 LR - 20140131 IS - 1938-3673 (Electronic) IS - 0741-5400 (Linking) VI - 95 IP - 2 DP - 2014 Feb TI - Prostaglandin E2 imprints a long-lasting effect on dendritic cell progenitors in the bone marrow. PG - 225-32 LID - 10.1189/jlb.0513294 [doi] AB - Dendritic cells (DCs) that differentiate in vitro from the bone marrow (BM) of mice with prostaglandin E2 (PGE2)-associated inflammation of the skin, airways, or peritoneal cavity poorly initiate immune responses. To remove in vitro differentiation and allow BM-derived DCs to seed the periphery under steady-state conditions, as well as study the molecule proposed responsible, chimeric mice were engrafted for >16 wk with BM cells from mice exposed to PGE2. Serial PGE2-chimeric mice were established with BM cells from the primary chimeric mice. Immune responses in the airways and skin of the PGE2-chimeric mice and serial PGE2-chimeric mice were significantly attenuated. After inflammatory challenges by intranasal LPS, topical fluorescein isothiocyanate, and intraperitoneal alum, DCs, macrophages, and neutrophils trafficked poorly in PGE2-chimeric mice and serial PGE2-chimeric mice. Injection of BM-differentiated DCs from nonchimeric mice restored the reduced immune responses of PGE2-chimeric mice. DCs from BM of 16-wk-engrafted PGE2-chimeric and serial PGE2-chimeric mice resembled cells differentiated from BM exposed to PGE2 for only 3 d, demonstrating the long-lasting effect of PGE2 on DC progenitors. PGE2 attenuates systemic immune responses by modulating myeloid cell progenitors in the BM such that BM-derived, terminally differentiated myeloid cells have poor trafficking ability to sites of need. FAU - Scott, Naomi M AU - Scott NM AD - 1.University of Western Australia, 100 Roberts Road, Subiaco, WA 6008, Australia. prueh@ichr.uwa.edu.au. FAU - Ng, Royce L X AU - Ng RL FAU - Gorman, Shelley AU - Gorman S FAU - Norval, Mary AU - Norval M FAU - Waithman, Jason AU - Waithman J FAU - Hart, Prue H AU - Hart PH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130827 PL - England TA - J Leukoc Biol JT - Journal of leukocyte biology JID - 8405628 RN - 0 (Lipopolysaccharides) RN - I223NX31W9 (Fluorescein-5-isothiocyanate) RN - K7Q1JQR04M (Dinoprostone) SB - IM CIN - J Leukoc Biol. 2014 Feb;95(2):201-4. PMID: 24482486 MH - Administration, Intranasal MH - Administration, Topical MH - Animals MH - Bone Marrow Cells/*cytology/drug effects/radiation effects MH - Bone Marrow Transplantation MH - Cell Differentiation/drug effects/radiation effects MH - Chimera/immunology MH - Dendritic Cells/*cytology/drug effects/*immunology/radiation effects MH - Dinoprostone/*pharmacology MH - Female MH - Fluorescein-5-isothiocyanate/pharmacology MH - Gamma Rays MH - Hypersensitivity/immunology/pathology MH - Immunity/drug effects/radiation effects MH - Inflammation/pathology MH - Lipopolysaccharides/pharmacology MH - Lymph Nodes/drug effects/pathology/radiation effects MH - Macrophages/drug effects/radiation effects MH - Mice MH - Neutrophils/drug effects/radiation effects MH - Stem Cells/*cytology/drug effects/*immunology/radiation effects MH - Time Factors OTO - NOTNLM OT - Immunosuppression OT - UV irradiation OT - chimeric mice OT - hemopoietic stem cells OT - inflammation OT - macrophages EDAT- 2013/08/29 06:00 MHDA- 2014/03/29 06:00 CRDT- 2013/08/29 06:00 PHST- 2013/08/29 06:00 [entrez] PHST- 2013/08/29 06:00 [pubmed] PHST- 2014/03/29 06:00 [medline] AID - jlb.0513294 [pii] AID - 10.1189/jlb.0513294 [doi] PST - ppublish SO - J Leukoc Biol. 2014 Feb;95(2):225-32. doi: 10.1189/jlb.0513294. Epub 2013 Aug 27.