Abstract
ABSTRACTCentrosomes are not absolutely essential for cell division; acentrosomal bipolar spindles can be established in oocytes and centrosome-eliminated somatic cells. However, the detailed mechanisms describing how spindle bipolarity is established without centrosomes are not completely understood. We have recently demonstrated that in acentrosomal human cells, nuclear mitotic apparatus protein (NuMA) assemblies-mediated microtubule asters and EG5 promote spindle bipolarization in early mitosis.
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