Profiling the adipocyte secretome reveals LRG1 as a novel adipokine that promotes insulin sensitivity and modulates inflammation triggered by release of cytochrome c from dead/dying cells, describing a new pathway at the intersection of obesity and its systemic sequelae.
Parastoo Boroumand, David C Prescott ... Amira Klip
Diet-induced obesity in mice led to a duration of diet-dependent bone marrow adipocyte whitening, which drove monocyte expansion and skewing towards a tissue-invasive phenotype, likely contributing to ensuing tissue infiltration that accompanies obesity and diabetes.
Bone marrow adipocyte lipolysis is required for maintaining bone mass under conditions of energy deficiency and is necessary for myelopoiesis following caloric restriction and irradiation.
A novel population of adipocytes that play essential roles in adaptive thermogenesis via cell autonomous and non-autonomous effects and regulate systemic glucose metabolism in mice.
Jason T Long, Abigail Leinroth ... Matthew J Hilton
Hypertrophic chondrocytes of the growth plate undergo a process of dedifferentiation to generate marrow associated skeletal stem and progenitor cells (SSPCs), which ultimately re-differentiate into cells of the osteoblast or adipocyte lineages during skeletal development.
Murine periosteum is highly enriched for osteoprogenitors, many of which express αSMA, but fracture callus chondrocytes are partially derived from other sources.