Mitochondria in early mammalian development - PubMed

Review

Mitochondria in early mammalian development

Jonathan Van Blerkom. Semin Cell Dev Biol. 2009 May.

Abstract

The role of mitochondria as central determinants of development competence of oocytes and preimplantation stage embryos is considered in the context of the diverse activities these organelles have in normal cell function. Stage- and cell-cycle-specific mitochondrial translocations and redistributions are described with respect to mechanisms of cytoplasmic remodeling that may establish domains of autonomous regulation of mitochondrial function and activity during early development. The functions of mitochondria as intracellular signaling elements, as regulators of signaling pathways, and oxygen sensors in differentiated cells are suggested to have similar capacities during mammalian oogenesis and early embryogenesis. Questions concerning the numerical size of the oocyte mitochondrial complement, the energy required to support normal preovulatory oogenesis and preimplantation embryogenesis, and the regulation of mitochondrial activity by extrinsic and intrinsic factors are addressed with respect the potential they may have for new investigational approaches to study the origin of the differential developmental competence of human oocytes and preimplantation stage embryos.

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