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Hou B, Wang D, Yan F, Cheng X, Xu Y, Xi X, Ge W, Sun S, Su P, Zhao L, Lyu Z, Hao Y, Wang H, Kong L. Fhb7-GST catalyzed glutathionylation effectively detoxifies the trichothecene family. Food Chem 2024; 439:138057. [PMID: 38100874 DOI: 10.1016/j.foodchem.2023.138057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/05/2023] [Accepted: 11/20/2023] [Indexed: 12/17/2023]
Abstract
Trichothecene (TCN) contamination in food and feed is a serious challenge due to the negative health and economic impacts. Here, we confirmed that the glutathione S-transferase (GST) Fhb7-GST could broadly catalyze type A, type B and type D TCNs into glutathione epoxide adducts (TCN-13-GSHs). To evaluate the toxicity of TCN-13-GSH adducts, we performed cell proliferation assays in vitro, which demonstrated decreased cytotoxicity of the adducts. Moreover, in vivo assays (repeated-dose treatment in mice) confirmed that TCN-13-GSH adducts were dramatically less toxic than the corresponding TCNs. To establish whether TCN-13-GSH was metabolized back to free toxin during digestion, single-dose metabolic tests were performed in rats; DON-13-GSH was not hydrolyzed in vivo, but rather was quickly metabolized to another low-toxicity compound, DON-13-N-acetylcysteine. These results demonstrate the promise of Fhb7-GST as a candidate of detoxification enzyme potentially applied in TCN-contaminated agricultural samples, minimizing the detrimental effects of the mycotoxin.
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Affiliation(s)
- Bingqian Hou
- State Key Laboratory of Wheat Breeding, College of Agronomy, Shandong Agricultural University, Tai'an 271018, PR China
| | - Dawei Wang
- State Key Laboratory of Wheat Breeding, College of Agronomy, Shandong Agricultural University, Tai'an 271018, PR China
| | - Fangfang Yan
- State Key Laboratory of Wheat Breeding, College of Agronomy, Shandong Agricultural University, Tai'an 271018, PR China
| | - Xinxin Cheng
- State Key Laboratory of Wheat Breeding, College of Agronomy, Shandong Agricultural University, Tai'an 271018, PR China
| | - Yongchang Xu
- State Key Laboratory of Wheat Breeding, College of Agronomy, Shandong Agricultural University, Tai'an 271018, PR China
| | - Xuepeng Xi
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, PR China
| | - Wenyang Ge
- College of Agronomy, Anhui Agricultural University, Key Laboratory of Wheat Biology and Genetic Improvement on Southern Yellow & Huai River Valley, Ministry of Agriculture and Rural Affairs, Hefei 230036, PR China
| | - Silong Sun
- State Key Laboratory of Wheat Breeding, College of Agronomy, Shandong Agricultural University, Tai'an 271018, PR China
| | - Peisen Su
- College of Agronomy, Liaocheng University, Liaocheng 252059, PR China
| | - Lanfei Zhao
- Department of Agronomy, Kansas State University, Manhattan, KS 66506, USA
| | - Zhongfan Lyu
- Shool of Life Sciences and Medicine, Shandong University of Technology, Zibo 255000, PR China
| | - Yongchao Hao
- State Key Laboratory of Wheat Breeding, College of Agronomy, Shandong Agricultural University, Tai'an 271018, PR China
| | - Hongwei Wang
- State Key Laboratory of Wheat Breeding, College of Agronomy, Shandong Agricultural University, Tai'an 271018, PR China.
| | - Lingrang Kong
- State Key Laboratory of Wheat Breeding, College of Agronomy, Shandong Agricultural University, Tai'an 271018, PR China
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