Key epigenetic and signaling factors in the formation and maintenance of the blood-brain barrier

To identify CNS endothelial cell (EC) the gene cohorts that participate in blood brain barrier (BBB) formation versus maintenance. We investigated the mechanism behind the reduced Wnt/β-catenin signaling observed in during later development We also investigated whether the adult endothelial cells can re express the EC gene cohorts required for the BBB formation. Ultra low mRNA sequencing of FACS sorted CD31+ve cortical ECs from E-17.5 W.T and HDAC2 ECKO. To conditionally KO HDAC2 E-17.5 endothelial cells we used tamoxifen-inducible Cdh5(PAC)-CreERT2 mice. HDAC2 flox/flox: mother was crossed with HDAC2flox/flox:Cdh5(PAC)-CreERT2 male. Tamoxifen was injected into the mother starting at E-12.5 and on alternate days until E-16.5. E-17.5 brain was harvested and cortex was isolated for Cd31+ve FACS sorting.