SOX6 Downregulation Induces γ-Globin in Human β-Thalassemia Major Erythroid Cells.

SOX6 Downregulation Induces γ-Globin in Human β-Thalassemia Major Erythroid Cells.
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SOX6 下调诱导人β-地中海贫血重度红细胞中的γ-珠蛋白。

DOI:
10.1155/2017/9496058
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发表时间:
2017
影响因子:
--
通讯作者:
Zhao W
Zhao W
中科院分区:
生物学3区
文献类型:
--
作者:
Li J;Lai Y;Luo J;Luo L;Liu R;Liu Z;Zhao W

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胎儿血红蛋白(HbF; α2γ2)是β-地中海贫血和镰状细胞贫血严重程度的有效遗传修饰剂。持续到成年期的HbF水平差异影响镰状细胞病和β-地中海贫血综合征的严重程度。Sry型HMG盒(SOX 6)是HbF的有效沉默物。在这里,我们通过下调SOX 6来重新激活γ-珠蛋白表达,以减轻β-地中海贫血患者的贫血。 在K562细胞系和人红细胞生成的体外培养模型中,慢病毒RNAi(RNA干扰)下调SOX 6,其中成红细胞来源于正常供体单核细胞(MNC)或重型β-地中海贫血MNC。通过qPCR(定量实时PCR)和WB(western blot)分析γ-珠蛋白的表达。 我们的数据显示,S 0X 6的下调诱导K562细胞系和来自正常供体和β-地中海贫血主要供体的人红细胞中的γ-珠蛋白产生,而不改变红细胞成熟。 这是第一份关于重型β地中海贫血来源的人成红细胞中SOX 6下调诱导γ-球蛋白的报告。
Fetal hemoglobin (HbF; α2γ2) is a potent genetic modifier of the severity of β-thalassemia and sickle cell anemia. Differences in the levels of HbF that persist into adulthood affect the severity of sickle cell disease and the β-thalassemia syndromes. Sry type HMG box (SOX6) is a potent silencer of HbF. Here, we reactivated γ-globin expression by downregulating SOX6 to alleviate anemia in the β-thalassemia patients. SOX6 was downregulated by lentiviral RNAi (RNA interference) in K562 cell line and an in vitro culture model of human erythropoiesis in which erythroblasts are derived from the normal donor mononuclear cells (MNC) or β-thalassemia major MNC. The expression of γ-globin was analyzed by qPCR (quantitative real-time PCR) and WB (western blot). Our data showed that downregulation of SOX6 induces γ-globin production in K562 cell line and human erythrocytes from normal donors and β-thalassemia major donors, without altering erythroid maturation. This is the first report on γ-globin induction by downregulation of SOX6 in human erythroblasts derived from β-thalassemia major.
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