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  • Title: ABCA1 and the engulfment of apoptotic cells.
    Author: Hamon Y, Chambenoit O, Chimini G.
    Journal: Biochim Biophys Acta; 2002 Dec 30; 1585(2-3):64-71. PubMed ID: 12531538.
    Abstract:
    Programmed cell death is one of the major devices controlling cellular homeostasis. However, the generation of cell debris that follows the execution phase of apoptosis has to be backed up by their efficient removal by phagocyte. This highly dynamic process requires the concerted action of a number of surface molecules able to recognize early signals of membrane modifications on the apoptotic prey. Among those, the loss of phospholipid asymmetry and exposure of phosphatidylserine on the prey to be is determinant to engage phagocyte receptors and trigger the removal of corpses. A loss of membrane lipid asymmetry occurs also on the phagocyte determining its efficiency as an undertaker. Here we will discuss how, in our mind, the ATP binding cassette transporter, ABCA1, by its action on the arrangement of lipids at the phagocyte membrane, may actively promote their competence to engulf.
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