The bone marrow stem cell niche grows up: mesenchymal stem cells and macrophages move in.
Armin Ehninger,Andreas Trumpp +1 more
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Ehninger and Trumpp discuss the role of monocytes/macrophages and other niche cells in the regulation of HSC mobilization and retention.Abstract:
Stem cell niches are defined as the cellular and molecular microenvironments that regulate stem cell function together with stem cell autonomous mechanisms. This includes control of the balance between quiescence, self-renewal, and differentiation, as well as the engagement of specific programs in response to stress. In mammals, the best understood niche is that harboring bone marrow hematopoietic stem cells (HSCs). Recent studies have expanded the number of cell types contributing to the HSC niche. Perivascular mesenchymal stem cells and macrophages now join the previously identified sinusoidal endothelial cells, sympathetic nerve fibers, and cells of the osteoblastic lineage to form similar, but distinct, niches that harbor dormant and self-renewing HSCs during homeostasis and mediate stem cell mobilization in response to granulocyte colony-stimulating factor.read more
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References
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Journal ArticleDOI
A perivascular origin for mesenchymal stem cells in multiple human organs
Mihaela Crisan,Solomon Yap,Louis Casteilla,Louis Casteilla,Chien Wen Chen,Mirko Corselli,Tea Soon Park,Gabriella Andriolo,Bin Sun,Bo Zheng,Li Zhang,Cyrille Norotte,Pang-ning Teng,Jeremy Traas,Rebecca C. Schugar,Bridget M. Deasy,Stephen F. Badylak,Hans-Jörg Bühring,Jean-Paul Giacobino,Lorenza Lazzari,Johnny Huard,Bruno Péault +21 more
TL;DR: Blood vessel walls harbor a reserve of progenitor cells that may be integral to the origin of the elusive MSCs and other related adult stem cells.
Journal ArticleDOI
Osteoblastic cells regulate the haematopoietic stem cell niche
Laura M. Calvi,Gregor B. Adams,Kathryn W. Weibrecht,Jonathan M. Weber,David P. Olson,M. C. Knight,Roderick P. Martin,Ernestina Schipani,P. Divieti,F. R. Bringhurst,Laurie A. Milner,Henry M. Kronenberg,David T. Scadden +12 more
TL;DR: Osteoblastic cells are a regulatory component of the haematopoietic stem cell niche in vivo that influences stem cell function through Notch activation.
Journal ArticleDOI
SLAM Family Receptors Distinguish Hematopoietic Stem and Progenitor Cells and Reveal Endothelial Niches for Stem Cells
Mark J. Kiel,Ömer H. Yilmaz,Toshihide Iwashita,Osman H. Yilmaz,Cox Terhorst,Sean J. Morrison +5 more
TL;DR: This work compared the gene expression profiles of highly purified HSCs and non-self-renewing multipotent hematopoietic progenitors and found that both groups occupied multiple niches, including sinusoidal endothelium in diverse tissues.
Journal ArticleDOI
Mesenchymal and haematopoietic stem cells form a unique bone marrow niche
Simón Méndez-Ferrer,Tatyana V. Michurina,Francesca Ferraro,Amin R. Mazloom,Ben D. MacArthur,Ben D. MacArthur,Sergio A. Lira,David T. Scadden,Avi Ma'ayan,Grigori Enikolopov,Paul S. Frenette,Paul S. Frenette +11 more
TL;DR: It is demonstrated that mesenchymal stem cells (MSCs), identified using nestin expression, constitute an essential HSC niche component and are indicative of a unique niche in the bone marrow made of heterotypic stem-cell pairs.
Journal ArticleDOI
Identification of the haematopoietic stem cell niche and control of the niche size
Jiwang Zhang,Chao Niu,Ling Ye,Haiyang Huang,Xi C. He,Wei Gang Tong,Jason Ross,Jeffrey S. Haug,Teri Johnson,Jian Q. Feng,Stephen E. Harris,Leanne M. Wiedemann,Leanne M. Wiedemann,Yuji Mishina,Linheng Li,Linheng Li +15 more
TL;DR: It is concluded that SNO cells lining the bone surface function as a key component of the niche to support HSCs, and that BMP signalling through BMPRIA controls the number of H SCs by regulating niche size.