(A) Western blotting showed that GSK3β levels were
significantly (~3 fold) higher in immature versus mature OLs in
vitro, and unaffected by Tat at either stage. (B)
Expression of CaMKIIβ was significantly lower in immature versus mature
OLs in vitro, and not affected by 96 h Tat treatment.
(C) Confocal images (maximum projection) of fluorescent
immunostaining showed that CaMKIIβ was expressed in OLs in
vitro. In immature OLs, the majority of CaMKIIβ was found in
cellular processes. In mature OLs, CaMKIIβ was found both in cell body
cytoplasm and along larger processes. (Scale bar: 10 μm; *:
p < 0.05, vs. corresponding control).
Experiments in A and B represent results from N=3 (immature) or N=4
(mature) independent cultures prepared from mice of different
litters.