PMID- 24915147 OWN - NLM STAT- MEDLINE DCOM- 20150129 LR - 20211021 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 9 IP - 6 DP - 2014 TI - Accumulation of BDCA1(+) dendritic cells in interstitial fibrotic lung diseases and Th2-high asthma. PG - e99084 LID - 10.1371/journal.pone.0099084 [doi] LID - e99084 AB - Dendritic cells (DCs) significantly contribute to the pathology of several mouse lung disease models. However, little is known of the contribution of DCs to human lung diseases. In this study, we examined infiltration with BDCA1(+) DCs of human lungs in patients with interstitial lung diseases or asthma. Using flow cytometry, we found that these DCs increased by 5 approximately 6 fold in the lungs of patients with idiopathic pulmonary fibrosis or hypersensitivity pneumonitis, which are both characterized by extensive fibrosis in parenchyma. The same DC subset also significantly increased in the lung parenchyma of patients with chronic obstructive pulmonary disease, although the degree of increase was relatively modest. By employing immunofluorescence microscopy using FcepsilonRI and MHCII as the specific markers for BDCA1(+) DCs, we found that the numbers of BDCA1(+) DCs also significantly increased in the airway epithelium of Th2 inflammation-associated asthma. These findings suggest a potential contribution of BDCA1(+) DCs in human lung diseases associated with interstitial fibrosis or Th2 airway inflammation. FAU - Greer, Alexandra M AU - Greer AM AD - Department of Microbiology and Immunology, Sandler Asthma Basic Research Center, University of California San Francisco, San Francisco, California, United States of America. FAU - Matthay, Michael A AU - Matthay MA AD - Department of Medicine and Anesthesia, University of California San Francisco, San Francisco, California, United States of America. FAU - Kukreja, Jasleen AU - Kukreja J AD - Division of Cardiothoracic Surgery, University of California San Francisco, San Francisco, California, United States of America. FAU - Bhakta, Nirav R AU - Bhakta NR AD - Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California San Francisco, San Francisco, California, United States of America. FAU - Nguyen, Christine P AU - Nguyen CP AD - Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California San Francisco, San Francisco, California, United States of America. FAU - Wolters, Paul J AU - Wolters PJ AD - Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California San Francisco, San Francisco, California, United States of America. FAU - Woodruff, Prescott G AU - Woodruff PG AD - Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California San Francisco, San Francisco, California, United States of America. FAU - Fahy, John V AU - Fahy JV AD - Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California San Francisco, San Francisco, California, United States of America. FAU - Shin, Jeoung-Sook AU - Shin JS AD - Department of Microbiology and Immunology, Sandler Asthma Basic Research Center, University of California San Francisco, San Francisco, California, United States of America. LA - eng GR - T32 5T32HL007185/HL/NHLBI NIH HHS/United States GR - T32 AI007334/AI/NIAID NIH HHS/United States GR - T32 HL007185/HL/NHLBI NIH HHS/United States GR - P01 HL107202/HL/NHLBI NIH HHS/United States GR - F32 1F32HL110720/HL/NHLBI NIH HHS/United States GR - R01 HL051854/HL/NHLBI NIH HHS/United States GR - F32 HL110720/HL/NHLBI NIH HHS/United States GR - HL095372/HL/NHLBI NIH HHS/United States GR - HL51854/HL/NHLBI NIH HHS/United States GR - R01 HL095372/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20140610 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (FcepsilonRI alpha-chain, human) RN - 0 (Receptors, IgE) SB - IM MH - Animals MH - Asthma/*immunology/pathology MH - Cell Count MH - Cohort Studies MH - Dendritic Cells/*immunology MH - Epithelium/pathology MH - Female MH - Humans MH - Idiopathic Pulmonary Fibrosis/*immunology/*pathology MH - Lung/immunology/pathology MH - Lung Diseases, Interstitial/*immunology/*pathology MH - Male MH - Mice MH - Middle Aged MH - Receptors, IgE/metabolism MH - Th2 Cells/*immunology PMC - PMC4051692 COIS- Competing Interests: The authors have read the journal's policy and have the following conflicts: PGW has received research grants from Pfizer and Genentech, serves as a consultant for Medimmune, Genentech, Merck, Boehringer-Ingelheim, Kalobios. This does not alter adherence to all the PLOS ONE policies on sharing data and materials. EDAT- 2014/06/11 06:00 MHDA- 2015/01/30 06:00 PMCR- 2014/06/10 CRDT- 2014/06/11 06:00 PHST- 2013/07/03 00:00 [received] PHST- 2014/04/09 00:00 [accepted] PHST- 2014/06/11 06:00 [entrez] PHST- 2014/06/11 06:00 [pubmed] PHST- 2015/01/30 06:00 [medline] PHST- 2014/06/10 00:00 [pmc-release] AID - PONE-D-13-27363 [pii] AID - 10.1371/journal.pone.0099084 [doi] PST - epublish SO - PLoS One. 2014 Jun 10;9(6):e99084. doi: 10.1371/journal.pone.0099084. eCollection 2014.