Loss of Kif11 causes monoaster spindle formation in radial glial cells during
division. Kif11 siblings and wild type embryos treated with
either STLC or DMSO control from 5–30hpf were labeled for radial glia
(Gfap), microtubules (α-Tubulin) (microtubules), and histones (Hoechst
stain) to identify mitotic spindle phenotypes. (A) Kif11 wild
type siblings and (I) vehicle control (DMSO) treated embryos exhibit normal
spindles in M-phase (enlarged in B–D and J–L, respectively)
while (E) kif11−/− mutants and (M)
STLC treated embryos display monoastral spindles characteristic of mitotic
arrest (enlarged in F–H and N–P, respectively). White dots
designate presumptive locations of centrosomes. For greater clarity Hoechst is
displayed as a greyscale image in the enlargements (D, H, L, P).