Regulation of Skeletal Development by Sphingomyelin Phosphodiesterase 3

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For a long time, sphingolipids were considered as inert structural molecules. This view, however, has radically changed in recent years as sphingolipids are now recognized as important metabolites regulating cell growth, death, differentiation and stress responses. The identification of sphingomyelin phosphodiesterase 3 (SMPD3; also known as neutral sphingomyelinase 2) as a novel regulator of skeletal development and the recently developed animal models lacking or overexpressing this enzyme in a spatiotemporal manner have created exciting opportunities to further understand the cellular events leading to endochondral bone development.