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Critical Reviews™ in Eukaryotic Gene Expression
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ISSN Imprimir: 1045-4403
ISSN En Línea: 2162-6502

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Critical Reviews™ in Eukaryotic Gene Expression

DOI: 10.1615/CritRevEukarGeneExpr.v19.i2.20
pages 109-124

Marrow Fat and the Bone Microenvironment: Developmental, Functional, and Pathological Implications

Clifford J. Rosen
Maine Medical Center Research Institute, USA
Cheryl Ackert-Bicknell
The Jackson Laboratory, Bar Harbor ME 04609, USA
Juan Pablo Rodriguez
The University of Chile, Santiago, Chile
Ana Maria Pino
The University of Chile, Santiago, Chile

SINOPSIS

Bone marrow adipogenesis is a normal physiologic process in all mammals. However, its function is unknown. The mesenchymal stem cell is the marrow precursor for adipocytes as well as osteoblasts, and PPARG is an essential differentiation factor for entrance into the fat lineage. Mouse models have provided significant insight into the molecular cues that define stromal cell fate. In humans, accelerated marrow adipogenesis has been associated with aging and several chronic conditions, including diabetes mellitus and osteoporosis. Newer imaging techniques have been used to determine the developmental time course of fat generation in bone marrow. However, more studies are needed to understand the interrelationship among hematopoietic, osteoblastic, and adipogenic cells within the marrow niche.


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