Figure 5

Anti-miRNA inhibitor molecule transfections. (a) TaqMan real-time PCR evaluation of mature hsa-miR-299-5p microRNA expression after 24, 72 and 96 h of cell culture in the presence of TPO (100 ng/ml). Data were obtained using as calibrator the RNA of the same sample extracted immediately after CD34 HPC purification and RNU6b as endogenous control. Cells were electroporated with hsa-miR-299-5p inhibitor after 3 days of culture. (b) TaqMan real-time PCR mature hsa-miR-299-5p expression after single transient transfection of its inhibitor molecule, through single nucleoporation with the Amaxa Nucleofector device. Expression withdrawal was monitored after one and ten days from nucleofection. Data were obtained using as calibrator the nucleofection solution-treated sample (nuc) and RNU6b as endogenous control. (c) Colony-forming capacity of HPCs transfected with hsa-miR-299-5p Anti-miR miRNA inhibitor (anti-299-5p), compared with Anti-miR miRNA inhibitor-negative control #1 (anti-NC1)-transfected cells and cells electroporated with the nucleofection solution only (nuc). Mean±S.D. from three independent experiments. Asterisk indicates a t-test P-value⩽0.001. BFU-E: erythrocyte burst-forming unit; CFU-E: erythrocyte colony-forming unit; GM-CFU: granulo-monocyte colony-forming unit; G-CFU: granulocyte colony-forming unit; M-CFU: monocyte colony-forming unit; GEMM-CFU: granulocyte-erythrocyte-monocyte-macrophage colony-forming unit. (d) Megakaryocytic colony-forming capacity of HPCs transfected with hsa-miR-299-5p Anti-miR miRNA Inhibitor (anti-299-5p), compared with anti-miR miRNA inhibitor-negative control #1 (anti-NC1)-transfected cells and cells electroporated with the nucleofection solution only (nuc). Mean±S.D. from three independent experiments. Asterisk indicates a t-test P-value⩽0.001