Identification of a Human Clonogenic Progenitor with Strict Monocyte Differentiation Potential: A Counterpart of Mouse cMoPs

Publication date: 16 May 2017
Source:Immunity, Volume 46, Issue 5
Author(s): Shunsuke Kawamura, Nobuyuki Onai, Fuyuki Miya, Taku Sato, Tatsuhiko Tsunoda, Kazutaka Kurabayashi, Satoshi Yotsumoto, Shoko Kuroda, Katsuto Takenaka, Koichi Akashi, Toshiaki Ohteki
Monocytes give rise to macrophages and dendritic cells (DCs) under steady-state and inflammatory conditions, thereby contributing to host defense and tissue pathology. A common monocyte progenitor (cMoP) that is strictly committed to the monocyte lineage has been recently identified in mice. Here, we identified human cMoPs as a CLEC12A^hiCD64^hi subpopulation of conventional granulocyte-monocyte progenitors (cGMPs) in umbilical cord blood and in bone marrow. Human cMoPs gave rise to monocyte subsets without showing any potential for differentiating into myeloid or lymphoid cells. Within the cGMP population, we also identified revised GMPs that completely lacked DC and lymphoid potential. Collectively, our findings expand and revise the current understanding of human myeloid cell differentiation pathways.

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Teaser

Monocytes and monocyte-derived macrophages cause a variety of inflammatory disorders. Kawamura and colleagues identified human cMoPs, a monocyte-restricted progenitor, in umbilical-cord blood and bone marrow, increasing our understanding of human monocyte differentiation and insight for therapies targeting cMoPs and monocytes.


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