miRNA在小鼠着床前胚胎的表达
Shaanxi Medical Journal(2009)
Abstract
目的:研究小鼠发育过程中miRNA表达水平的变化,探讨miRNA对着床前胚胎发育过程的作用。方法:建立小鼠超排、交配系统,收集着床前胚胎提取低分子量RNA;采用miRNA特异RT引物进行反转录,采用SYBR Green实时定量PCR技术,研究miR-125a、miR-295和miR-181b在小鼠着床前胚胎发育过程中表达水平的变化。结果:着床前胚胎发育的各阶段均表达miR-125a、miR-295和miR-181b;随着胚胎发育进程,miR-295的表达呈逐渐上升的趋势;miR-125a在卵母细胞到2细胞发育阶段呈下降趋势,以后随发育进程呈逐渐上升趋势。结论:小鼠着床前胚胎中表达miRNA,着床前胚胎的发育和分化过程可能受到miRNA的调控。
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Key words
Embryo Development Mouse @miRNA
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