Taken together, our data so far indicate that a single administration of decitabine for 48 h induces Mecp2e1/MeCP2E1, MeCP2 (total) expression, whereas its withdrawal downregulates Mecp2 (total)/MeCP2 (total), Mecp2e1/MeCP2E1, and Mecp2e2 expression with minimal change in NSC differentiation.