Western blot analyses of histone acetyl transferases and histone deacetylases in vehicle vs. LDE225 -resistant fSmoM2M2;hGFAP-cre and Ptch;p53 SHH MBs. (A, D)
fSmoM2M2;hGFAP-cre SI-CSC, (B, E)
Ptch;p53 SI-CSC MBs and (C, F)
Ptch;p53 SD-CSC MBs. G) Western blot analyses of LDE225-resistant Ptch;p53 SI-CSC tumorsphere cells treated with LDE225 for long-term (> 2 weeks) in vitro show the same HAT and HDAC expression changes. H) Acute (24 hours) treatment of Ptch;p53 SI-CSC tumorsphere cells show no significant changes in CBP, GCN5, or HAT1 protein levels in response to short-term LDE225 treatment.