John Libbey Eurotext

Hématologie

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Involvement of autophagy in cellular development and differentiation Volume 21, issue 4, Juillet-Août 2015

Figures

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Authors
1 Inserm U1065, Centre méditerranéen de médecine moléculaire, Nice, France
2 Moffitt Cancer Center and Research Institute, 12902 USF Magnolia Drive, Tampa, FL 33612, États-Unis
3 Groupe francophone des myélodysplasies (GFM), Paris, France
4 Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA 02215, États-Unis
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Maintenance of cellular homeostasis depends upon a exquisitely regulated balance between the biosynthesis and the degradation (or catabolism) of macromolecules. This balance is controlled by regulatory mechanisms that respond to environmental signals. In eukaryotes, autophagy is one of the major pathways of cellular catabolism allowing degradation of macromolecules and organelles. This process involves the transport of proteins to the lysosomes and their degradation by hydrolases, such as lysosomal proteases (cathepsins). The function of this lysosomal degradation pathway, discovered several decades ago, was recently highlighted by generating mouse models invalidated for atg genes essential for autophagy. The characterization of systemic and tissue-specific knockout models of atg genes in mice led to an explosion of knowledge regarding about the functions of autophagy. Here we review the main advances in our understanding of the function of autophagy in mammalian development and differentiation.