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2015 ; 3
(ä): 61
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How PI3K-derived lipids control cell division
#MMPMID26484344
Campa CC
; Martini M
; De Santis MC
; Hirsch E
Front Cell Dev Biol
2015[]; 3
(ä): 61
PMID26484344
show ga
To succeed in cell division, intense cytoskeletal and membrane remodeling are
required to allow accurate chromosome segregation and cytoplasm partitioning.
Spatial restriction of the actin dynamics and vesicle trafficking define the cell
symmetry and equivalent membrane scission events, respectively. Protein complexes
coordinating mitosis are recruited to membrane microdomains characterized by the
presence of the phosphatidylinositol lipid members (PtdIns), like PtdIns(3,4,5)P
3,PtdIns(4,5)P 2, and PtdIns(3)P. These PtdIns represent a minor component of
cell membranes, defining membrane domain identity, ultimately controlling
cytoskeleton and membrane dynamics during mitosis. The coordinated presence of
PtdIns(3,4,5)P 3 at the cell poles and PtdIns(4,5)P 2 at the cleavage furrow
controls the polarity of the actin cytoskeleton leading to symmetrical cell
division. In the endosomal compartment, the trafficking of PtdIns(3)P positive
vesicles allows the recruitment of the protein machinery required for the
abscission.