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Shen ZY, Wang YF, Wang LJ, Zhang B, Liu ZQ, Zheng YG. Construction of exogenous methanol, formate, and betaine modules for methyl donor supply in methionine biosynthesis. Front Bioeng Biotechnol 2023; 11:1170491. [PMID: 37064240 PMCID: PMC10102461 DOI: 10.3389/fbioe.2023.1170491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 03/20/2023] [Indexed: 04/03/2023] Open
Abstract
Methionine is an essential sulfur-containing amino acid that finds widespread applications in agriculture, medicine, and the food industry. However, the complex and multibranched biosynthetic pathway of methionine has posed significant challenges to its efficient fermentation production. In this study, we employed a modularized synthetic biology strategy to improve the weakest branched pathway of methionine biosynthesis. Three exogenous modules were constructed and assembled to provide methyl donors, which are the primary limiting factors in methionine biosynthesis. The first module utilized added methanol, which was converted into 5,10-methylene-tetrahydrofolate for methionine production but was hindered by the toxicity of methanol. To circumvent this issue, a non-toxic formate module was constructed, resulting in a visible improvement in the methionine titer. Finally, an exogenous betaine module was constructed, which could directly deliver methyl to methionine. The final strain produced 2.87 g/L of methionine in a flask, representing a 20% increase over the starting strain. This study presents a novel strategy for improving and balancing other metabolites that are synthesized through complex multibranched pathways.
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Affiliation(s)
- Zhen-Yang Shen
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Yi-Feng Wang
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Li-Juan Wang
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Bo Zhang
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Zhi-Qiang Liu
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
- *Correspondence: Zhi-Qiang Liu,
| | - Yu-Guo Zheng
- The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
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Zhang F, Li Z, Gao P, Zou J, Cui Y, Qian Y, Gu R, Xu W, Hu J. HJ11 decoction restrains development of myocardial ischemia-reperfusion injury in rats by suppressing ACSL4-mediated ferroptosis. Front Pharmacol 2022; 13:1024292. [PMID: 36483736 PMCID: PMC9723372 DOI: 10.3389/fphar.2022.1024292] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 11/07/2022] [Indexed: 08/12/2023] Open
Abstract
HJ11 is a novel traditional Chinese medicine developed from the appropriate addition and reduction of Si-Miao-Yong-An decoction, which has been commonly used to treat ischemia-reperfusion (I/R) injury in the clinical setting. However, the mechanism of action of HJ11 components remains unclear. Ferroptosis is a critical factor that promotes myocardial I/R injury, and the pathophysiological ferroptosis-mediated lipid peroxidation causes I/R injury. Therefore, this study explored whether HJ11 decoction ameliorates myocardial I/R injury by attenuating ACSL4-mediated ferroptosis. This study also explored the effect of ACSL4 expression on iron-dependent programmed cell death by preparing a rat model of myocardial I/R injury and oxygen glucose deprivation/reperfusion (OGD/R)-induced H9c2 cells. The results showed that HJ11 decoction improved cardiac function; attenuated I/R injury, apoptosis, oxidative stress, mitochondrial damage, and iron accumulation; and reduced infarct size in the myocardial I/R injury rat model. Additionally, HJ11 decoction suppressed the expression of ferroptosis-promoting proteins [Acyl-CoA synthetase long-chain family member 4 (ACSL4) and cyclooxygenase-2 (COX2)] but promoted the expression of ferroptosis-inhibiting proteins [ferritin heavy chain 1 (FTH1) and glutathione-dependent lipid hydroperoxidase glutathione peroxidase 4 (GPX4)] in the myocardial tissues of the I/R injury rat model. Similar results were found with the OGD/R-induced H9c2 cells. Interestingly, ACSL4 knockdown attenuated iron accumulation, oxidative stress, and ferroptosis in the OGD/R-treated H9c2 cells. However, ACSL4 overexpression counteracted the inhibitory effect of the HJ11 decoction on OGD/R-triggered oxidative stress and ferroptosis in H9c2 cells. These findings suggest that HJ11 decoction restrained the development of myocardial I/R injury by regulating ACSL4-mediated ferroptosis. Thus, HJ11 decoction may be an effective medication to treat myocardial I/R injury.
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Affiliation(s)
- Fangyuan Zhang
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ziyun Li
- School of Acupuncture and Tuina, School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, China
| | - Ping Gao
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jiaxi Zou
- School·of·Basic·Medical·Sciences Chengdu·University·of Traditional·Chinese Medicine, Chengdu, China
| | - Yuting Cui
- College of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Yi Qian
- The Third School of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Renjun Gu
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Weiming Xu
- China Science and Technology Development Center for Chinese Medicine, Beijing, China
- The First Affilliated Hospital of Henan University of CM, Zhengzhou, China
| | - Jingqing Hu
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
- China Science and Technology Development Center for Chinese Medicine, Beijing, China
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Yu Y, Han J, Yin J, Huang J, Liu J, Geng L, Sun X, Zhao W. Dual-Target Electrochemical Sensor Based on 3D MoS2-rGO and Aptamer Functionalized Probes for Simultaneous Detection of Mycotoxins. Front Chem 2022; 10:932954. [PMID: 35836672 PMCID: PMC9274162 DOI: 10.3389/fchem.2022.932954] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 06/10/2022] [Indexed: 12/03/2022] Open
Abstract
A dual-target aptamer functionalized probes (DTAFP) was applied for the detection of aflatoxin B1 (AFB1) and zearalenone (ZEN) simultaneously, which has not been reported. Meanwhile, two functional materials for signal amplification of the DTAFP were synthesized: 1) a three-dimensional molybdenum disulfide-reduced graphene oxide (MoS2-rGO) as a favorable loading interface; 2) a double-probes gold nanoparticles (AuNPs) modified by Thionin (Thi) and 6-(Ferrocenyl) hexanethiol (FC6S) as distinguishable and non-interfering signals. Mycotoxins on the electrode surface release into solution under the function of the DTAFP, leading a reduction of the differential peak impulse in signal response. Under the optimum conditions, the aptasensor exhibited a detection range of 1.0 pg mL−1–100 ng mL−1 for AFB1 and ZEN, with no observable cross reactivity. In addition, the aptasensor performed excellent stability, reproducibility, specificity, and favorable recovery in the detection of edible oil. This work demonstrated a novel method for the construction of a simple, rapid, and sensitive aptasensor in the detection of multiple mycotoxins simultaneously.
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Affiliation(s)
- Yanyang Yu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, Zibo, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, Zibo, China
| | - Jie Han
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, Zibo, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, Zibo, China
| | - Jiaqi Yin
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, Zibo, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, Zibo, China
| | - Jingcheng Huang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, Zibo, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, Zibo, China
| | - Jing Liu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, Zibo, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, Zibo, China
| | - Lingjun Geng
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, Zibo, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, Zibo, China
| | - Xia Sun
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, Zibo, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, Zibo, China
| | - Wenping Zhao
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, Zibo, China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, Zibo, China
- *Correspondence: Wenping Zhao,
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