PMID- 33453508 OWN - NLM STAT- MEDLINE DCOM- 20210625 LR - 20210625 IS - 1090-2163 (Electronic) IS - 0008-8749 (Linking) VI - 361 DP - 2021 Mar TI - Differential signaling patterns of stimulated bone marrow-derived dendritic cells under alpha1-antitrypsin-enriched conditions. PG - 104281 LID - S0008-8749(20)30441-X [pii] LID - 10.1016/j.cellimm.2020.104281 [doi] AB - Dendritic cells (DCs) mature upon an inflammatory trigger. However, an inflammatory trigger can lead to a semi-mature phenotype, allowing DCs to evoke tolerance and expedite the resolution of inflammation. This duality likely involves context-dependent modulation of inflammatory signaling. Human alpha1-antitrypsin (hAAT) promotes semimature DCs. We examined changes in a wide spectrum of signaling cascades in stimulated murine bone marrow-derived cells with hAAT. Upon stimulation by IL-1beta+IFNgamma, hAAT-treated cells depicted an attenuated calcium flux. Disrupting PKA or NF-kappaB pathways revoked only some hAAT-mediated outcomes. hAAT-treated cells exhibited a distict pattern of kinase phosphorylation. hAAT-mediated increase in Treg cells in-vitro required intact inflammatory signaling pathways. Taken together, hAAT appears to require a stimulated microenvironment to promote inflammatory resolution, setting it aside from classical anti-inflammatory agents. Further studies are required to identify the specific molecules targeted by hAAT that mediate these and other outcomes. CI - Copyright (c) 2020 Elsevier Inc. All rights reserved. FAU - Ozeri, Eyal AU - Ozeri E AD - Department of Clinical Biochemistry & Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel. FAU - Rider, Peleg AU - Rider P AD - Department of Clinical Biochemistry & Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel. FAU - Rigbi, Shoham AU - Rigbi S AD - Department of Clinical Biochemistry & Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel. FAU - Shahaf, Galit AU - Shahaf G AD - Department of Clinical Biochemistry & Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel. FAU - Nita, Iulia I AU - Nita II AD - Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel. FAU - Sekler, Israel AU - Sekler I AD - Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel. FAU - Lewis, Eli C AU - Lewis EC AD - Department of Clinical Biochemistry & Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel. FAU - Schuster, Ronen AU - Schuster R AD - Department of Clinical Biochemistry & Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel. Electronic address: ronensc@post.bgu.ac.il. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210101 PL - Netherlands TA - Cell Immunol JT - Cellular immunology JID - 1246405 RN - 0 (Ccr7 protein, mouse) RN - 0 (Interleukin-1) RN - 0 (NF-kappa B) RN - 0 (Receptors, CCR7) RN - 0 (Receptors, Interleukin-1) RN - 0 (alpha 1-Antitrypsin) RN - SY7Q814VUP (Calcium) SB - IM MH - Animals MH - Bone Marrow/metabolism MH - Bone Marrow Cells/metabolism MH - Calcium/metabolism MH - Cells, Cultured MH - Dendritic Cells/*metabolism MH - Immune Tolerance/immunology MH - Inflammation/metabolism MH - Interleukin-1/immunology MH - Mice MH - Mice, Inbred C57BL MH - NF-kappa B/metabolism MH - Receptors, CCR7/immunology/metabolism MH - Receptors, Interleukin-1/antagonists & inhibitors/immunology MH - Signal Transduction/*drug effects/immunology MH - T-Lymphocytes, Regulatory/immunology MH - alpha 1-Antitrypsin/metabolism/*pharmacology OTO - NOTNLM OT - CCR7 OT - Calcium signaling OT - IL-1 receptor antagonist OT - Immunomodulation OT - NF-kappaB EDAT- 2021/01/17 06:00 MHDA- 2021/06/29 06:00 CRDT- 2021/01/16 20:10 PHST- 2020/01/31 00:00 [received] PHST- 2020/07/17 00:00 [revised] PHST- 2020/11/21 00:00 [accepted] PHST- 2021/01/17 06:00 [pubmed] PHST- 2021/06/29 06:00 [medline] PHST- 2021/01/16 20:10 [entrez] AID - S0008-8749(20)30441-X [pii] AID - 10.1016/j.cellimm.2020.104281 [doi] PST - ppublish SO - Cell Immunol. 2021 Mar;361:104281. doi: 10.1016/j.cellimm.2020.104281. Epub 2021 Jan 1.