Two distinct interstitial macrophage populations coexist across tissues in specific subtissular niches - PubMed (original) (raw)
. 2019 Mar 15;363(6432):eaau0964.
doi: 10.1126/science.aau0964.
Hwee Ying Lim 2, Leonard Tan 1, Sheau Yng Lim 2, Peter See 1, Josephine Lum 1, Xiao-Meng Zhang 1, Shihui Foo 1, Satoshi Nakamizo 1, Kaibo Duan 1, Wan Ting Kong 1, Rebecca Gentek 3, Akhila Balachander 1, Daniel Carbajo 1, Camille Bleriot 1, Benoit Malleret 1 2, John Kit Chung Tam 4, Sonia Baig 5, Muhammad Shabeer 5, Sue-Anne Ee Shiow Toh 5, Andreas Schlitzer 6, Anis Larbi 1, Thomas Marichal 7 8 9, Bernard Malissen 3 10, Jinmiao Chen 1, Michael Poidinger 1, Kenji Kabashima 1 11, Marc Bajenoff 3, Lai Guan Ng 1, Veronique Angeli 2, Florent Ginhoux 12
Affiliations
- PMID: 30872492
- DOI: 10.1126/science.aau0964
Two distinct interstitial macrophage populations coexist across tissues in specific subtissular niches
Svetoslav Chakarov et al. Science. 2019.
Abstract
Macrophages are a heterogeneous cell population involved in tissue homeostasis, inflammation, and various pathologies. Although the major tissue-resident macrophage populations have been extensively studied, interstitial macrophages (IMs) residing within the tissue parenchyma remain poorly defined. Here we studied IMs from murine lung, fat, heart, and dermis. We identified two independent IM subpopulations that are conserved across tissues: Lyve1loMHCIIhiCX3CR1hi (Lyve1loMHCIIhi) and Lyve1hiMHCIIloCX3CR1lo (Lyve1hiMHCIIlo) monocyte-derived IMs, with distinct gene expression profiles, phenotypes, functions, and localizations. Using a new mouse model of inducible macrophage depletion (Slco2b1 flox/DTR), we found that the absence of Lyve1hiMHCIIlo IMs exacerbated experimental lung fibrosis. Thus, we demonstrate that two independent populations of IMs coexist across tissues and exhibit conserved niche-dependent functional programming.
Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.
Comment in
- Mapping the lung.
Mildner A, Yona S. Mildner A, et al. Science. 2019 Mar 15;363(6432):1154-1155. doi: 10.1126/science.aaw6775. Science. 2019. PMID: 30872510 No abstract available.
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