PMID- 29898959 OWN - NLM STAT- MEDLINE DCOM- 20190705 LR - 20190705 IS - 1550-6606 (Electronic) IS - 0022-1767 (Linking) VI - 201 IP - 2 DP - 2018 Jul 15 TI - Myeloid Cell-Restricted STAT3 Signaling Controls a Cell-Autonomous Antifibrotic Repair Program. PG - 663-674 LID - 10.4049/jimmunol.1701791 [doi] AB - Myeloid cells can be beneficial as well as harmful in tissue regenerative responses. The molecular mechanisms by which myeloid cells control this critical decision of the immune system are not well understood. Using two different models of physiological acute or pathological chronic skin damage, in this study we identified myeloid cell-restricted STAT3 signaling as important and an injury context-dependent regulator of skin fibrosis. Targeted disruption of STAT3 signaling in myeloid cells significantly accelerated development of pathological skin fibrosis in a model of chronic bleomycin-induced tissue injury, whereas the impact on wound closure dynamics and quality of healing after acute excision skin injury was minor. Chronic bleomycin-mediated tissue damage in control mice provoked an antifibrotic gene signature in macrophages that was characterized by upregulated expression of IL-10, SOCS3, and decorin. In contrast, in STAT3-deficient macrophages this antifibrotic repair program was abolished whereas TGF-beta1 expression was increased. Notably, TGF-beta1 synthesis in cultured control bone marrow-derived macrophages (BMDMs) was suppressed after IL-10 exposure, and this suppressive effect was alleviated by STAT3 deficiency. Accordingly, coculture of IL-10-stimulated control BMDMs with fibroblasts suppressed expression of the TGF-beta1 downstream target connective tissue growth factor in fibroblasts, whereas this suppressive effect was lost by STAT3 deficiency in BMDMs. Our findings highlight a previously unrecognized protective role of myeloid cell-specific STAT3 signaling in immune cell-mediated skin fibrosis, and its regulatory pathway could be a potential target for therapy. CI - Copyright (c) 2018 by The American Association of Immunologists, Inc. FAU - Do, Nhu-Nguyen AU - Do NN AD - Department of Dermatology, University of Cologne, 50937 Cologne, Germany. FAU - Willenborg, Sebastian AU - Willenborg S AD - Department of Dermatology, University of Cologne, 50937 Cologne, Germany. FAU - Eckes, Beate AU - Eckes B AD - Translational Matrix Biology Group, University of Cologne, 50931 Cologne, Germany. FAU - Jungst, Christian AU - Jungst C AD - Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, 50931 Cologne, Germany. FAU - Sengle, Gerhard AU - Sengle G AD - Center for Biochemistry, Medical Faculty, University of Cologne, 50931 Cologne, Germany. AD - Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; and. FAU - Zaucke, Frank AU - Zaucke F AUID- ORCID: 0000-0002-7680-9354 AD - Dr. Rolf M. Schwiete Research Unit for Osteoarthritis, Orthopedic University Hospital, Friedrichsheim gGmbh, 60528 Frankfurt/Main, Germany. FAU - Eming, Sabine A AU - Eming SA AD - Department of Dermatology, University of Cologne, 50937 Cologne, Germany; sabine.eming@uni-koeln.de. AD - Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, 50931 Cologne, Germany. AD - Center for Molecular Medicine Cologne, University of Cologne, 50931 Cologne, Germany; and. LA - eng SI - ClinicalTrials.gov/NCT00984646 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180613 PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (STAT3 Transcription Factor) RN - 0 (Transforming Growth Factor beta) RN - 130068-27-8 (Interleukin-10) SB - IM MH - Acute Disease MH - Animals MH - Cells, Cultured MH - Chronic Disease MH - Disease Models, Animal MH - Fibrosis MH - Interleukin-10/metabolism MH - Macrophages/*immunology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Myeloid Cells/*physiology MH - Regeneration MH - STAT3 Transcription Factor/genetics/*metabolism MH - Signal Transduction MH - Skin/*pathology MH - Skin Diseases/chemically induced/*immunology MH - Transcriptome MH - Transforming Growth Factor beta/metabolism MH - Wound Healing EDAT- 2018/06/15 06:00 MHDA- 2019/07/06 06:00 CRDT- 2018/06/15 06:00 PHST- 2017/12/27 00:00 [received] PHST- 2018/05/03 00:00 [accepted] PHST- 2018/06/15 06:00 [pubmed] PHST- 2019/07/06 06:00 [medline] PHST- 2018/06/15 06:00 [entrez] AID - jimmunol.1701791 [pii] AID - 10.4049/jimmunol.1701791 [doi] PST - ppublish SO - J Immunol. 2018 Jul 15;201(2):663-674. doi: 10.4049/jimmunol.1701791. Epub 2018 Jun 13.