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科学通报  2013 

转高赖氨酸融合蛋白基因水稻外源蛋白的消化稳定性和急性毒性

DOI: 10.1007/s11434-013-5923-y, PP. 2068-2077

Keywords: 转基因水稻,高赖氨酸,外源蛋白,消化稳定性,急性毒性

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Abstract:

对转基因作物安全性评价的最有效方式是直接对外源蛋白进行评价.本研究以我国自主培育的转高赖氨酸融合蛋白基因水稻(简称转GL基因水稻)为实验材料,参考中华人民共和国国家标准和农业行业标准,通过外源蛋白模拟胃肠液消化稳定性实验和小鼠尾静脉注射急性毒性实验,对转GL基因水稻外源蛋白的食用安全性进行评价.结果表明,转GL基因水稻的外源蛋白在模拟胃液中可消化,在模拟肠液中极易消化;小鼠急性毒性实验中,除注射蜂毒肽的阳性对照组小鼠全部死亡外,其余各实验组间的小鼠体重增长无明显差异,血清生化指标、脏器系数和病理学检查等结果也无生物学意义上的显著差异.本研究结果说明,转GL基因水稻外源蛋白在模拟胃肠液中不具有消化稳定性,且对小鼠无急性毒性作用.

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