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YMDD突变株HBV转基因小鼠的制备及检测
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YMDD突变株HBV转基因小鼠的制备及检测
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YMDD突变株HBV转基因小鼠的制备及检测
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Journal Article
YMDD突变株HBV转基因小鼠的制备及检测
2011
Overview
目的建立YMDD耐药突变株HBV转基因小鼠,为乙肝防治研究提供转基因动物模型。方法采用受精卵显微注射法,将带有YMDD突变的对拉米夫定有耐药性的1.3拷贝HBV基因注入FVB/N单细胞受精卵的原核内,制备YMDD耐药突变株HBV转基因小鼠。采用PCR检测外源基因的整合和传代情况,采用ELISA和免疫组化等方法检测HBsAg在肝、肾中的复制和表达情况。结果注射受精卵3401枚,产269只F0代仔鼠,PCR阳性33只,外源基因的整合率12.3%。9只转基因鼠血清HBVDNA弱阳性,拷贝数低于103拷贝/ml;免疫组化结果显示肝组织和肾组织均有HBsAg表达,且肾组织中的表达强于肝组织。经传代产下47只F1代转基因鼠,目的基因PCR阳性率为27.6%,且肝组织和肾组织中HBsAg均有表达,分布特性与F0代一致。结论成功制备出体内有复制表达而且可以传代YMDD耐药突变株HBV的转基因小鼠。
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