A specific role for phosphoinositide 3-kinase and AKT in osteoblasts?

Imelda M McGonnell, Agamemnon E Grigoriadis, Eric W-F Lam, Joanna S Price, Andrew Sunters

Research output: Contribution to journalArticle (Academic Journal)

49 Citations (Scopus)

Abstract

The phosphoinositide 3-kinase and AKT (protein kinase B) signaling pathway (PI3K/AKT) plays a central role in the control of cell survival, growth, and proliferation throughout the body. With regard to bone, and particularly in osteoblasts, there is an increasing amount of evidence that the many signaling molecules exert some of their bone-specific effects in part via selectively activating some of the generic effects of the PI3K/AKT pathway in osteoblasts. There is further data demonstrating that PI3K/AKT has the capacity to specifically cross-talk with other signaling pathways and transcriptional networks controlling bone cells' development in order to fine-tune the osteoblast phenotype. There is also evidence that perturbations in the PI3K/AKT pathway may well be responsible for certain bone pathologies. In this review, we discuss some of these findings and suggest that the PI3K/AKT pathway is a central nexus in the extensive network of extracellular signaling pathways that control the osteoblast.
Original languageEnglish
Pages (from-to)88
JournalFrontiers in Endocrinology
Volume3
DOIs
Publication statusPublished - 2012

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