“…However, their role in epithelial cell cytokinesis remains unknown, and it is unclear, for example, whether apical-basal segregation of PtdIns(4,5)P 2 and PtdIns(3,4,5)P 3 is preserved during epithelial cell mitosis. It is well established that, in Schizosaccharomyces pombe (Zhang et al, 2000), Drosophila S2 cells (Ben El Kadhi et al, 2011;Roubinet et al, 2011) and isolated mammalian cells (Abe et al, 2012;Dambournet et al, 2011;Emoto et al, 2005;Field et al, 2005;Kouranti et al, 2006), PtdIns(4,5)P 2 is the only phosphoinositide that is obviously enriched at the plasma membrane of the cleavage furrow. There, PtdIns(4,5)P 2 is essential for the recruitment of anillin (also known as ANLN in mammals and Scraps in Drosophila), which then interacts with components of the actin cytoskeleton, including F-actin, Myo II, RhoA, Ect2 [a guanine nucleotide exchange factor (GEF) for Rho GTPases] and septins (Box 1; Fig.…”