The aflatoxin-detoxifizyme specific expression in mouse parotid gland

文献类型： 外文期刊

第一作者： Guan, Li-zeng

作者： Guan, Li-zeng;Cai, Jin-shun;Yu, Long-zheng;Sun, Yu-ping;Wu, Han-dong;Zhang, Yong-liang;Xi, Qian-yun

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关键词： Parotid gland;Aflatoxin-detoxifizyme;Transgenic mice

期刊名称：TRANSGENIC RESEARCH （ 影响因子：2.788； 五年影响因子：2.377 ）

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收录情况： SCI

摘要： The aflatoxin-detoxifizyme (ADTZ) gene derived from Armillariella tabescens was cloned into parotid gland-specific expression vector (pPSPBGPneo) to construct the parotid gland-specific vector expressing ADTZ (pPSPBGPneo-ADTZ). Transgenic mice were generated by microinjection and identified by using PCR and Southern blotting analysis. PCR and Southern blotting analysis showed that total six transgenic mice carried the ADTZ gene were generated. RT-PCR analysis indicated that the expression of ADTZ mRNA could be detected only in parotid glands of the transgenic mice. The ADTZ activity in the saliva was found to be 3.72 +/- A 1.64 U/mL. After feeding a diet containing aflatoxin B1 (AFB1) for 14 days, the effect of ADTZ on serum biochemical indexes and AFB1 residues in serum and liver of mice were evaluated. The results showed that total protein and globulin contents in the test treatment (transgenic mice) produced ADTZ were significantly higher than that of the positive control, while alanine aminotransferase and aspartate aminotransferase activity in serum of the test treatment (transgenic mice) were remarkably lower compared to that of the positive control (P < 0.05). Moreover, AFB1 residues in serum and liver of the test treatment (transgenic mice) were significantly lower compared with that of the positive control (P < 0.05). These results in the study confirmed that ADTZ produced in transgenic mice could reduce, even eliminate the negative effects of AFB1 on mice.

分类号： R394

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