PMID- 33637522 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240331 IS - 2375-2548 (Electronic) IS - 2375-2548 (Linking) VI - 7 IP - 9 DP - 2021 Feb TI - Microglia control small vessel calcification via TREM2. LID - 10.1126/sciadv.abc4898 [doi] LID - eabc4898 AB - Microglia participate in central nervous system (CNS) development and homeostasis and are often implicated in modulating disease processes. However, less is known about the role of microglia in the biology of the neurovascular unit (NVU). In particular, data are scant on whether microglia are involved in CNS vascular pathology. In this study, we use a mouse model of primary familial brain calcification, Pdgfb(ret/ret) , to investigate the role of microglia in calcification of the NVU. We report that microglia enclosing vessel calcifications, coined calcification-associated microglia, display a distinct activation phenotype. Pharmacological ablation of microglia with the CSF1R inhibitor PLX5622 leads to aggravated vessel calcification. Mechanistically, we show that microglia require functional TREM2 for controlling vascular calcification. Our results demonstrate that microglial activity in the setting of pathological vascular calcification is beneficial. In addition, we identify a previously unrecognized function of microglia in halting the expansion of vascular calcification. CI - Copyright (c) 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). FAU - Zarb, Yvette AU - Zarb Y AUID- ORCID: 0000-0001-5107-0701 AD - Department of Neurosurgery, Clinical Neurocentre, Zurich University Hospital, Zurich University, Zurich, Switzerland. AD - Neuroscience Center Zurich, University of Zurich and ETH Zurich, Zurich, Switzerland. FAU - Sridhar, Sucheta AU - Sridhar S AUID- ORCID: 0000-0003-2699-0367 AD - Department of Neurosurgery, Clinical Neurocentre, Zurich University Hospital, Zurich University, Zurich, Switzerland. AD - Neuroscience Center Zurich, University of Zurich and ETH Zurich, Zurich, Switzerland. FAU - Nassiri, Sina AU - Nassiri S AD - Bioinformatics Core Facility, Swiss Institute of Bioinformatics, Lausanne, Switzerland. FAU - Utz, Sebastian Guido AU - Utz SG AUID- ORCID: 0000-0001-5491-0219 AD - Institute of Experimental Immunology, University of Zurich, Zurich, Switzerland. FAU - Schaffenrath, Johanna AU - Schaffenrath J AUID- ORCID: 0000-0003-1689-1648 AD - Department of Neurosurgery, Clinical Neurocentre, Zurich University Hospital, Zurich University, Zurich, Switzerland. AD - Neuroscience Center Zurich, University of Zurich and ETH Zurich, Zurich, Switzerland. FAU - Maheshwari, Upasana AU - Maheshwari U AUID- ORCID: 0000-0001-7516-3099 AD - Department of Neurosurgery, Clinical Neurocentre, Zurich University Hospital, Zurich University, Zurich, Switzerland. AD - Neuroscience Center Zurich, University of Zurich and ETH Zurich, Zurich, Switzerland. FAU - Rushing, Elisabeth J AU - Rushing EJ AUID- ORCID: 0000-0001-7616-6320 AD - Institute of Neuropathology, Zurich University Hospital, Zurich, Switzerland. FAU - Nilsson, K Peter R AU - Nilsson KPR AUID- ORCID: 0000-0002-5582-140X AD - Department of Chemistry, Linkoping University, Linkoping, Sweden. FAU - Delorenzi, Mauro AU - Delorenzi M AUID- ORCID: 0000-0001-7631-3263 AD - Bioinformatics Core Facility, Swiss Institute of Bioinformatics, Lausanne, Switzerland. AD - Department of Oncology, University Lausanne, Lausanne, Switzerland. FAU - Colonna, Marco AU - Colonna M AUID- ORCID: 0000-0001-5222-4987 AD - Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA. FAU - Greter, Melanie AU - Greter M AD - Institute of Experimental Immunology, University of Zurich, Zurich, Switzerland. FAU - Keller, Annika AU - Keller A AUID- ORCID: 0000-0003-1466-3633 AD - Department of Neurosurgery, Clinical Neurocentre, Zurich University Hospital, Zurich University, Zurich, Switzerland. annika.keller@usz.ch. AD - Neuroscience Center Zurich, University of Zurich and ETH Zurich, Zurich, Switzerland. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20210226 PL - United States TA - Sci Adv JT - Science advances JID - 101653440 SB - IM PMC - PMC7909879 EDAT- 2021/02/28 06:00 MHDA- 2021/02/28 06:01 PMCR- 2021/02/26 CRDT- 2021/02/27 05:32 PHST- 2020/04/27 00:00 [received] PHST- 2021/01/15 00:00 [accepted] PHST- 2021/02/27 05:32 [entrez] PHST- 2021/02/28 06:00 [pubmed] PHST- 2021/02/28 06:01 [medline] PHST- 2021/02/26 00:00 [pmc-release] AID - 7/9/eabc4898 [pii] AID - abc4898 [pii] AID - 10.1126/sciadv.abc4898 [doi] PST - epublish SO - Sci Adv. 2021 Feb 26;7(9):eabc4898. doi: 10.1126/sciadv.abc4898. Print 2021 Feb.