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Bone marrow-derived monocytes give rise to self-renewing and fully differentiated Kupffer cells

2016; Nature Portfolio; Volume: 7; Issue: 1 Linguagem: Inglês

10.1038/ncomms10321

2041-1723

Charlotte L. Scott, Fang Zheng, Patrick De Baetselier, Liesbet Martens, Yvan Saeys, Sofie De Prijck, Saskia Lippens, Chloé Abels, Steve Schoonooghe, Geert Raes, Nick Devoogdt, Bart N. Lambrecht, Alain Beschin, Martin Guilliams,

Phagocytosis and Immune Regulation

Abstract Self-renewing tissue-resident macrophages are thought to be exclusively derived from embryonic progenitors. However, whether circulating monocytes can also give rise to such macrophages has not been formally investigated. Here we use a new model of diphtheria toxin-mediated depletion of liver-resident Kupffer cells to generate niche availability and show that circulating monocytes engraft in the liver, gradually adopt the transcriptional profile of their depleted counterparts and become long-lived self-renewing cells. Underlining the physiological relevance of our findings, circulating monocytes also contribute to the expanding pool of macrophages in the liver shortly after birth, when macrophage niches become available during normal organ growth. Thus, like embryonic precursors, monocytes can and do give rise to self-renewing tissue-resident macrophages if the niche is available to them.