GATA-2过表达对小鼠胎肝造血干细胞功能的影响
Zhongguo shi yan xue ye xue za zhi / Zhongguo bing li sheng li xue hui = Journal of experimental hematology / Chinese Association of Pathophysiology(2013)
Abstract
本研究探讨GATA-2过表达对小鼠胎肝造血干细胞功能的影响。应用带GFP绿荧光的逆转录病毒载体介导的病毒感染实验将GATA-2基因引入小鼠胎肝细胞,通过流式免疫荧光术、细胞周期检测及集落形成实验等技术手段研究这些GATA-2过表达胎肝造血干细胞的生物学功能变化。研究结果表明:过表达GATA-2的胎肝细胞中Lin-Sca1+C-Kit+(LSK)细胞比例显著增加,LSK细胞周期未受太大影响,但其定向克隆形成能力受抑。结论:过表达GATA-2引起小鼠胎肝造血干细胞LSK比例增加,并抑制其定向分化能力,其机制可能与HES-1表达上调导致细胞在干/祖细胞阶段受阻滞有关。
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Key words
definitive differentiation,hes-1,fetal liver hematopoietic stem cell,gata-2
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