Fig.5.
Immunofluorescence staining for HbF production and Real time evaluation for BCL11a, HDAC and Gamma-globin genes expression. A. Results of immunofluorescence staining showed that ROM and SIM can induce HbF production in erythroid progenitors differentiated form cord hematopoietic stem cells: 1) Newborn blood was used as positive control for immunofluorescence staining, 2) Untreated group, 3) ROM group, 4) SIM group, 5) ROM/SIM group (×100) and B. CD34+ cells were treated with ROM, SIM and ROM/SIM for 7 and 14 days. Results of gene expression showed that ROM and SIM can induce Gamma-globin gene expression and downregulate BCL11a and HDAC1 genes expression on the 7th and 14th day, but the combination of ROM and SIM can induce Gamma-globin gene transcription synergistically by downregulation of BCL11a and HDAC1 genes on the 7th and 14th day. We also found that ROM and SIM had no effect on HDAC2 gene expression.
*; P<0.05, HbF; Fetal hemoglobin, ROM; Romidepsin, SIM; Simvastatin, and SB; Sodium butyrate.