PMID- 25760420 OWN - NLM STAT- MEDLINE DCOM- 20160818 LR - 20230203 IS - 1935-3456 (Electronic) IS - 1933-0219 (Print) IS - 1933-0219 (Linking) VI - 8 IP - 6 DP - 2015 Nov TI - MyD88 dependence of beryllium-induced dendritic cell trafficking and CD4(+) T-cell priming. PG - 1237-47 LID - 10.1038/mi.2015.14 [doi] AB - Beryllium exposure results in beryllium hypersensitivity in a subset of exposed individuals, leading to granulomatous inflammation and fibrosis in the lung. In addition to its antigenic properties, beryllium has potent adjuvant activity that contributes to sensitization via unknown pathways. Here we show that beryllium induces cellular death and release of interleukin (IL)-1alpha and DNA into the lung. Release of IL-1alpha was inflammasome independent and required for beryllium-induced neutrophil recruitment into the lung. Beryllium enhanced classical dendritic cell (cDC) migration from the lung to draining lymph nodes (LNs) in an IL-1R-independent manner, and the accumulation of activated cDCs in the LN was associated with increased priming of CD4(+) T cells. DC migration was reduced in Toll-like receptor 9 knockout (TLR9KO) mice; however, cDCs in the LNs of TLR9-deficient mice were highly activated, suggesting a role for more than one innate receptor in the effects on DCs. The adjuvant effects of beryllium on CD4(+) T-cell priming were similar in wild-type, IL-1R-, caspase-1-, TLR2-, TLR4-, TLR7-, and TLR9-deficient mice. In contrast, DC migration, activation, and the adjuvant effects of beryllium were significantly reduced in myeloid differentiation primary response gene 88 knockout (MyD88KO) mice. Collectively, these data suggest that beryllium exposure results in the release of damage-associated molecular patterns that engage MyD88-dependent receptors to enhance pulmonary DC function. FAU - McKee, A S AU - McKee AS AD - Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA. FAU - Mack, D G AU - Mack DG AD - Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA. FAU - Crawford, F AU - Crawford F AD - Department of Immunology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA. AD - Department of Biomedical Research, National Jewish Health, Denver, Colorado, USA. FAU - Fontenot, A P AU - Fontenot AP AD - Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA. AD - Department of Immunology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA. LA - eng GR - R01 HL126736/HL/NHLBI NIH HHS/United States GR - R21 HL111760/HL/NHLBI NIH HHS/United States GR - HL111760/HL/NHLBI NIH HHS/United States GR - P01 ES011810/ES/NIEHS NIH HHS/United States GR - R01 HL062410/HL/NHLBI NIH HHS/United States GR - ES11810/ES/NIEHS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20150311 PL - United States TA - Mucosal Immunol JT - Mucosal immunology JID - 101299742 RN - 0 (Myd88 protein, mouse) RN - 0 (Myeloid Differentiation Factor 88) RN - OW5102UV6N (Beryllium) SB - IM MH - Animals MH - Berylliosis/*immunology MH - Beryllium/toxicity MH - CD4-Positive T-Lymphocytes/*immunology MH - Cell Movement/*immunology MH - Dendritic Cells/*immunology MH - Disease Models, Animal MH - Flow Cytometry MH - Humans MH - Lymphocyte Activation/immunology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Myeloid Differentiation Factor 88/*immunology MH - Neutrophils/immunology PMC - PMC4567547 MID - NIHMS660344 COIS- Disclosure: The authors have no conflicts of interest to declare. EDAT- 2015/03/12 06:00 MHDA- 2016/08/19 06:00 PMCR- 2016/05/01 CRDT- 2015/03/12 06:00 PHST- 2014/10/02 00:00 [received] PHST- 2015/01/12 00:00 [accepted] PHST- 2015/03/12 06:00 [entrez] PHST- 2015/03/12 06:00 [pubmed] PHST- 2016/08/19 06:00 [medline] PHST- 2016/05/01 00:00 [pmc-release] AID - S1933-0219(22)01003-0 [pii] AID - 10.1038/mi.2015.14 [doi] PST - ppublish SO - Mucosal Immunol. 2015 Nov;8(6):1237-47. doi: 10.1038/mi.2015.14. Epub 2015 Mar 11.