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Zhang X, Hou C, Liu S, Liu R, Yin X, Liu X, Ma H, Wen J, Zhou R, Yin N, Jian Y, Liu S, Wang J. Effects of transgenic Bacillus Thuringiensis maize (2A-7) on the growth and development in rats. Food Chem Toxicol 2021; 158:112694. [PMID: 34813927 DOI: 10.1016/j.fct.2021.112694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 11/03/2021] [Accepted: 11/17/2021] [Indexed: 10/19/2022]
Abstract
This study aimed to determine the effects of genetically modified insect-resistant maize (2A-7) on the growth and development in developing rats. Rats were fed a diet formulated with 2A-7 maize and were compared with rats fed a diet formulated with non-transgenic maize (CK group) and rats fed AIN-93G diet (BC group). 2A-7 maize was formulated into diets at ratios of 82.4% (H group) and 20.6% (L group); non-transgenic maize was formulated into diets at a ratio of 82.4%. From the first day of pregnancy, adult rats were divided into four groups and fed with the above four diets, respectively. Weaning on postnatal day 21, the diets of offspring were consistent with their parents. The results showed that body weight, hematology, serum biochemistry, organ weight, organ coefficients and allergenicity of offspring fed with 2A-7 maize were comparable with those in the CK and BC groups. In physiological and behavioral development experiments, there was no statistically significant difference among groups. Although mCry1Ab proteins were detected in organs and serum, no histopathological changes were observed among groups. In conclusion, A-7 maize cause no treatment-related adverse effects on offspring, indicating that 2A-7 maize is safe for developing rats.
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Affiliation(s)
- Xiaoxuan Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, 100191, Beijing, China.
| | - Chao Hou
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, 100191, Beijing, China.
| | - Siqi Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, 100191, Beijing, China.
| | - Rui Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, 100191, Beijing, China.
| | - Xueqian Yin
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, 100191, Beijing, China.
| | - Xinran Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, 100191, Beijing, China.
| | - Huijuan Ma
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, 100191, Beijing, China.
| | - Jing Wen
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, 100191, Beijing, China.
| | - Ruoyu Zhou
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, 100191, Beijing, China.
| | - Ning Yin
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, 100191, Beijing, China.
| | - Yuanzhi Jian
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, 100191, Beijing, China.
| | - Shan Liu
- Key Laboratory of Food Safety Risk Assessment of Ministry of Health, China National Center for Food Safety Risk Assessment, 100021, Beijing, China.
| | - Junbo Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, 100191, Beijing, China; Beijing Key Laboratory of Food Safety Toxicology Research and Evaluation, 100191, Beijing, China.
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Fu W, Zhu P, Qu M, Zhi W, Zhang Y, Li F, Zhu S. Evaluation on reprogramed biological processes in transgenic maize varieties using transcriptomics and metabolomics. Sci Rep 2021; 11:2050. [PMID: 33479482 PMCID: PMC7820507 DOI: 10.1038/s41598-021-81637-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 12/16/2020] [Indexed: 11/12/2022] Open
Abstract
Genetic engineering (GM) has great potential to improve maize productivity, but rises some concerns on unintended effects, and equivalent as their comparators. There are some limitations through targeted analysis to detect the UE in genetically modified organisms in many previous studies. We here reported a case-study on the effects of introducing herbicides and insect resistance (HIR) gene cassette on molecular profiling (transcripts and metabolites) in a popular maize variety Zhengdan958 (ZD958) in China. We found that introducing HIR gene cassette bring a limited numbers of differential abundant genes (DAGs) or differential abundant metabolites (DAMs) between transgenic events and non-transgenic control. In contrast, averaged 10 times more DAGs and DAMs were observed when performed comparison under different growing environments in three different ecological regions of China than the numbers induced by gene effects. Major biological pathways relating to stress response or signaling transduction could explain somehow the effects of growing environments. We further compared two transgenic events mediated ZD958 (GM-ZD958) with either transgenic parent GM-Z58, and other genetic background nonGM-Z58, nonGM-ZD958, and Chang7-2. We found that the numbers of DAGs and DAMs between GM-ZD958 and its one parent maize variety, Z58 or GM-Z58 is equivalent, but not Chang7-2. These findings suggest that greater effects due to different genetic background on altered molecular profiling than gene modification itself. This study provides a case evidence indicating marginal effects of gene pleiotropic effects, and environmental effects should be emphasized.
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Affiliation(s)
- Wei Fu
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China
| | - Pengyu Zhu
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China
| | - Mingnan Qu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai, 200032, China
| | - Wang Zhi
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China
| | - Yongjiang Zhang
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China
| | - Feiwu Li
- Institute of Agricultural Quality Standard and Testing Technology, Jilin Academy of Agricultural Sciences, Changchun, 130033, Jilin, China.
| | - Shuifang Zhu
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China.
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