Hematopoietic Stem Cell Niche in Health and Disease.
Regulation of stem cells in adult tissues is a key determinant of how well an organism can respond to the stresses of physiological challenge and disease. This is particularly true of the hematopoietic system, where demands on host defenses can call for an acute increase in cell production. Hematopoietic stem cells receive the regulatory signals for cell production in adult mammals in the bone marrow, a tissue with higher-order architectural and functional organization than previously appreciated. Here, we review the data defining particular structural components and heterologous cells in the bone marrow that participate in hematopoietic stem cell function. Further, we explore the case for stromal-hematopoietic cell interactions contributing to neoplastic myeloid disease. As the hematopoietic regulatory networks in the bone marrow are revealed, it is anticipated that strategies will emerge for how to enhance or inhibit production of specific blood cells. In that way, the control of hematopoiesis will enter the domain of therapies to modulate broad aspects of hematopoiesis, both normal and malignant.
['Hoggatt|Jonathan|J|', 'Kfoury|Youmna|Y|', 'Scadden|David T|DT|']
D053687:Adult Stem Cells D000818:Animals D001854:Bone Marrow Cells D006410:Hematopoiesis D006412:Hematopoietic Stem Cells D006801:Humans D055153:Stem Cell Niche
bone marrow hematopoiesis malignancy hypoxia leukemia mesenchymal cell