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Wang L, Zhang K, Gao S, Zhang M, Liu T, Cai B, Wang L, Su L, Wu J, Chen S. High-Yield Synthesis of 2'-Fucosyllactose from Glycerol and Glucose in Engineered Escherichia coli. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:15237-15248. [PMID: 37795855 DOI: 10.1021/acs.jafc.3c05015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
2'-Fucosyllactose (2'-FL) is vital for the growth and development of newborns. In this study, we developed a synthesis pathway for 2'-FL in Escherichia coli BL21 (DE3). Then, we optimized the solubility of α-1,2-fucosyltransferase, thereby enhancing the production yield of 2'-FL. Based on this finding, we further enhanced the expression of guanosine inosine kinase Gsk and knocked out the isocitrate lyase regulator gene iclR. This strategy reduced the formation of byproduct acetate during the metabolic process and alleviated carbon source overflow effects in the strain, resulting in further improvement of the yield of 2'-FL. In a 3 L bioreactor, employing fed-batch fermentation with glycerol and glucose as substrates, the engineered strain BWLAI-RSZL exhibited impressive 2'-FL titers of 121.9 and 111.56 g/L, along with productivity levels of 1.57 and 1.31 g/L/h, respectively. The reported 2'-FL titers reached a groundbreaking level, irrespective of the carbon source employed (glycerol or glucose), highlighting the significant potential for large-scale industrial synthesis of 2'-FL.
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Affiliation(s)
- Luyao Wang
- State Key Laboratory of Food Science and Resources, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Key Laboratory of Industrial Biotechnology Ministry of Education, and International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Kang Zhang
- State Key Laboratory of Food Science and Resources, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Key Laboratory of Industrial Biotechnology Ministry of Education, and International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Shengqi Gao
- State Key Laboratory of Food Science and Resources, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Key Laboratory of Industrial Biotechnology Ministry of Education, and International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Mengwei Zhang
- State Key Laboratory of Food Science and Resources, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Key Laboratory of Industrial Biotechnology Ministry of Education, and International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Tongle Liu
- State Key Laboratory of Food Science and Resources, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Key Laboratory of Industrial Biotechnology Ministry of Education, and International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Bohan Cai
- State Key Laboratory of Food Science and Resources, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Key Laboratory of Industrial Biotechnology Ministry of Education, and International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Lei Wang
- State Key Laboratory of Food Science and Resources, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Key Laboratory of Industrial Biotechnology Ministry of Education, and International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Lingqia Su
- State Key Laboratory of Food Science and Resources, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Key Laboratory of Industrial Biotechnology Ministry of Education, and International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Jing Wu
- State Key Laboratory of Food Science and Resources, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Key Laboratory of Industrial Biotechnology Ministry of Education, and International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Sheng Chen
- State Key Laboratory of Food Science and Resources, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Key Laboratory of Industrial Biotechnology Ministry of Education, and International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
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2
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Liu Y, Zhu Y, Wang H, Wan L, Zhang W, Mu W. Strategies for Enhancing Microbial Production of 2'-Fucosyllactose, the Most Abundant Human Milk Oligosaccharide. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11481-11499. [PMID: 36094047 DOI: 10.1021/acs.jafc.2c04539] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Human milk oligosaccharides (HMOs), a group of structurally diverse unconjugated glycans in breast milk, act as important prebiotics and have plenty of unique health effects for growing infants. 2'-Fucosyllactose (2'-FL) is the most abundant HMO, accounting for approximately 30%, among approximately 200 identified HMOs with different structures. 2'-FL can be enzymatically produced by α1,2-fucosyltransferase, using GDP-l-fucose as donor and lactose as acceptor. Metabolic engineering strategies have been widely used for enhancement of GDP-l-fucose supply and microbial production of 2'-FL with high productivity. GDP-l-fucose supply can be enhanced by two main pathways, including de novo and salvage pathways. 2'-FL-producing α1,2-fucosyltransferases have widely been identified from various microorganisms. Metabolic pathways for 2'-FL synthesis can be basically constructed by enhancing GDP-l-fucose supply and introducing α1,2-fucosyltransferase. Various strategies have been attempted to enhance 2'-FL production, such as acceptor enhancement, donor enhancement, and improvement of the functional expression of α1,2-fucosyltransferase. In this review, current progress in GDP-l-fucose synthesis and bacterial α1,2-fucosyltransferases is described in detail, various metabolic engineering strategies for enhancing 2'-FL production are comprehensively reviewed, and future research focuses in biotechnological production of 2'-FL are suggested.
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Affiliation(s)
- Yuanlin Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Yingying Zhu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Hao Wang
- Bloomage Biotechnology Corp., Ltd., Jinan, Shandong 250010, People's Republic of China
| | - Li Wan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Wenli Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
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3
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Jin Z, Fang Z, Pei Z, Wang H, Zhu J, Lee YK, Zhang H, Zhao J, Lu W, Chen W. A low molecular weight brown algae Laminaria japonica glycan modulation of gut microbiota and body weight in mice. Food Funct 2021; 12:12606-12620. [PMID: 34821239 DOI: 10.1039/d1fo03024h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Brown algae glycan from Laminaria japonica (LJNP) is a heterogeneous glycan with two apparent molecular weights of 1.1 and 37.3 kDa, and is mainly composed of α β-glucan and a few fucosyl residues. To explore the regulation of gut microbiota and the host, LJNP and 2'-fucosyllactose (2'FL) were compared to investigate their effect on mice via oral administration. Using metagenomic and metabolomic analyses, we found that 2'FL mainly relied on Adlercreutzia equolifaciens and Akkermansia muciniphila to improve gut amino acid and bile acid metabolism, whereas LJNP mainly drove Bacteroides vulgatus and Bacteroides uniformis to regulate gut amino acid metabolism and glycometabolism. Moreover, LJNP showed a weight loss effect and better protection of the intestinal barrier than 2'FL. We further employed LJNP and 2'FL on a germ-free mice model. Interestingly, the body weight management was not microbiome mediated. This study showed that LJNP can ameliorate the intestinal barrier through modulation of the gut microbiota, maintain the blood glucose level, and regulate body weight and the antioxidant function. Although the benefits of LJNP on host health were partly revealed, mechanisms such as the weight loss effect require further study.
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Affiliation(s)
- Zhen Jin
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Zhifeng Fang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Zhangming Pei
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Hongchao Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Jinlin Zhu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yuan-Kun Lee
- Department of Microbiology & Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, China
- (Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou 225004, China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- (Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou 225004, China
| | - Wenwei Lu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, China
- (Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou 225004, China
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, China
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4
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Xu M, Meng X, Zhang W, Shen Y, Liu W. Improved production of 2'-fucosyllactose in engineered Saccharomyces cerevisiae expressing a putative α-1, 2-fucosyltransferase from Bacillus cereus. Microb Cell Fact 2021; 20:165. [PMID: 34425826 PMCID: PMC8381501 DOI: 10.1186/s12934-021-01657-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 08/12/2021] [Indexed: 11/10/2022] Open
Abstract
Background 2′-fucosyllactose (2′-FL) is one of the most abundant oligosaccharides in human milk. It constitutes an authorized functional additive to improve infant nutrition and health in manufactured infant formulations. As a result, a cost-effective method for mass production of 2′-FL is highly desirable. Results A microbial cell factory for 2′-FL production was constructed in Saccharomyces cerevisiae by expressing a putative α-1, 2-fucosyltransferase from Bacillus cereus (FutBc) and enhancing the de novo GDP-l-fucose biosynthesis. When enabled lactose uptake, this system produced 2.54 g/L of 2′-FL with a batch flask cultivation using galactose as inducer and carbon source, representing a 1.8-fold increase compared with the commonly used α-1, 2-fucosyltransferase from Helicobacter pylori (FutC). The production of 2′-FL was further increased to 3.45 g/L by fortifying GDP-mannose synthesis. Further deleting gal80 enabled the engineered strain to produce 26.63 g/L of 2′-FL with a yield of 0.85 mol/mol from lactose with sucrose as a carbon source in a fed-batch fermentation. Conclusion FutBc combined with the other reported engineering strategies holds great potential for developing commercial scale processes for economic 2′-FL production using a food-grade microbial cell factory. Supplementary Information The online version contains supplementary material available at 10.1186/s12934-021-01657-5.
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Affiliation(s)
- Mingyuan Xu
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, No.72 Binhai Road, Qingdao, 266237, People's Republic of China
| | - Xiangfeng Meng
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, No.72 Binhai Road, Qingdao, 266237, People's Republic of China.
| | - Weixin Zhang
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, No.72 Binhai Road, Qingdao, 266237, People's Republic of China
| | - Yu Shen
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, No.72 Binhai Road, Qingdao, 266237, People's Republic of China
| | - Weifeng Liu
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, No.72 Binhai Road, Qingdao, 266237, People's Republic of China.
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5
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Abstract
Few classes of natural products rival the structural audacity of oligosaccharides. Their complexity, however, has stood as an immense roadblock to translational research, as access to homogeneous material from nature is challenging. Thus, while carbohydrates are critical to the myriad functional and structural aspects of the biological sciences, their behavior is largely descriptive. This challenge presents an attractive opportunity for synthetic chemistry, particularly in the area of human milk science. First, there is an inordinate need for synthesizing homogeneous human milk oligosaccharides (HMOs). Superimposed on this goal is the mission of conducting syntheses at scale to enable animal studies. Herein, we present a personalized rumination of our involvement, and that of our colleagues, which has led to the synthesis and characterization of HMOs and mechanistic probes. Along the way, we highlight chemical, chemoenzymatic, and synthetic biology based approaches. We close with a discussion on emergent challenges and opportunities for synthesis, broadly defined, in human milk science.
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Affiliation(s)
- Lianyan L Xu
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Steven D Townsend
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
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6
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Lu M, Mosleh I, Abbaspourrad A. Engineered Microbial Routes for Human Milk Oligosaccharides Synthesis. ACS Synth Biol 2021; 10:923-938. [PMID: 33909411 DOI: 10.1021/acssynbio.1c00063] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Human milk oligosaccharides (HMOs) are one of the important ingredients in human milk, which have attracted great interest due to their beneficial effect on the health of newborns. The large-scale production of HMOs has been researched using engineered microbial routes due to the availability, safety, and low cost of host strains. In addition, the development of molecular biology technology and metabolic engineering has promoted the effectiveness of HMOs production. According to current reports, 2'-fucosyllactose (2'-FL), 3-fucosyllactose (3-FL), lacto-N-tetraose (LNT), lacto-N-neotetraose (LNnT), 3'-sialyllactose (3'-SL), 6'-sialyllactose (6'-SL), and some fucosylated HMOs with complex structures have been produced via the engineered microbial route, with 2'-FL having been produced the most. However, due to the uncertainty of metabolic patterns, the selection of host strains has certain limitations. Aside from that, the expression of appropriate glycosyltransferase in microbes is key to the synthesis of different HMOs. Therefore, finding a safe and efficient glycosyltransferase has to be addressed when using engineered microbial pathways. In this review, the latest research on the production of HMOs using engineered microbial routes is reported. The selection of host strains and adapting different metabolic pathways helped researchers designing engineered microbial routes that are more conducive to HMOs production.
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Affiliation(s)
- Mengyao Lu
- Department of Food Science, College of Agriculture and Life Sciences, Cornell University, 411 Tower Road, Ithaca, New York 14853, United States
| | - Imann Mosleh
- Department of Food Science, College of Agriculture and Life Sciences, Cornell University, 411 Tower Road, Ithaca, New York 14853, United States
| | - Alireza Abbaspourrad
- Department of Food Science, College of Agriculture and Life Sciences, Cornell University, 411 Tower Road, Ithaca, New York 14853, United States
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7
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Ni Z, Wu J, Li Z, Yuan L, Wang Y, Chen X, Yao J. Enhanced bioproduction of fucosylated oligosaccharide 3-fucosyllactose in engineered Escherichia coli with an improved de novo pathway. Biosci Biotechnol Biochem 2021; 85:1772-1781. [PMID: 33904902 DOI: 10.1093/bbb/zbab074] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 04/22/2021] [Indexed: 01/17/2023]
Abstract
3-fucosyllactose (3-FL) and 2'-fucosyllactose (2'-FL), are two important fucosylated oligosaccharides in human milk. Extensive studies on 2'-FL enabled its official approval for use in infant formula. However, development of 3-FL has been somewhat sluggish due to its low content in human milk and poor yield in enlarged production. Here, an α-1,3-fucosyltransferase mutant was introduced into an engineered Escherichia coli (E. coli) capable of producing GDP-L-fucose, leading to a promising 3-FL titer in a 5.0-L bioreactor. To increase the availability of cofactors (NADPH and GTP) for optimized 3-FL production, zwf, pntAB, and gsk genes were successively overexpressed, finally resulting in a higher 3-FL level with a titer of 35.72 g/L and a yield of 0.82 mol 3-FL/mol lactose. Unexpectedly, the deletion of pfkA gene led to a much lower performance of 3-FL production than the control strain. Still, our strategy achieved the highest 3-FL level in E. coli to date.
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Affiliation(s)
- Zhijian Ni
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, P. R. China.,Science Island Branch of Graduate School , University of Science & Technology of China, Hefei, P. R. China
| | - Jinyong Wu
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, P. R. China.,Huainan New Energy Research Center, Institute of Plasma Physics, Chinese Academy of Sciences, Huainan, P. R. China.,Wuhan Zhongke Optics Valley Green Biotechnology Co. Ltd., Wuhan, China
| | - Zhongkui Li
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, P. R. China.,Science Island Branch of Graduate School , University of Science & Technology of China, Hefei, P. R. China
| | - Lixia Yuan
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, P. R. China
| | - Yu Wang
- Wuhan Zhongke Optics Valley Green Biotechnology Co. Ltd., Wuhan, China
| | - Xiangsong Chen
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, P. R. China.,Huainan New Energy Research Center, Institute of Plasma Physics, Chinese Academy of Sciences, Huainan, P. R. China
| | - Jianming Yao
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, P. R. China.,Science Island Branch of Graduate School , University of Science & Technology of China, Hefei, P. R. China
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8
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Zhou W, Jiang H, Wang L, Liang X, Mao X. Biotechnological Production of 2'-Fucosyllactose: A Prevalent Fucosylated Human Milk Oligosaccharide. ACS Synth Biol 2021; 10:447-458. [PMID: 33687208 DOI: 10.1021/acssynbio.0c00645] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Human milk oligosaccharide (HMO) is a key component of human milk carbohydrates and is closely related to the nutrition and health benefits of breastfeeding in infants. 2'-Fucosyllactose (2'-FL) is the most abundant fucosylated HMO, which has remarkable value in nutrition and medicine, such as suppressing pathogen infection, regulating intestinal flora, and boosting immunity. However, 2'-FL production via the method of extraction or chemical synthesis cannot meet its large demand, and as a result, environmentally friendly and efficient biotechnological approaches, including in vitro enzymatic synthesis and microbial cell factory production, have been developed and applied to its commercialized production. This review introduces, summarizes, and discusses the recent advances in the biotechnological production of 2'-FL. Furthermore, future research directions for the biotechnological production of 2'-FL as well as the strategies to further improve its concentration are highlighted and discussed.
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Affiliation(s)
- Wenting Zhou
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Hong Jiang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Lili Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Xingxing Liang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Xiangzhao Mao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
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9
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Li W, Zhu Y, Wan L, Guang C, Mu W. Pathway Optimization of 2'-Fucosyllactose Production in Engineered Escherichia coli. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:1567-1577. [PMID: 33499605 DOI: 10.1021/acs.jafc.0c07224] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
2'-Fucosyllactose (2'-FL), one of the most valuable oligosaccharides in human milk, is used as an emerging food ingredient in the nutraceutical and food industries due to its numerous health benefits. Herein, the de novo and salvage pathways for GDP-fucose synthesis were engineered and optimized in Escherichia coli BL21 (DE3) to improve the production of 2'-FL. The de novo pathway genes encoding phosphomannomutase (ManB), mannose-1-phosphate guanyltransferase (ManC), GDP-d-mannose-4,6-dehydratase (Gmd), and GDP-l-fucose synthase (WcaG) combined with the gene from the salvage pathway encoding fucose kinase/fucose-1-phosphate guanylyltransferase (Fkp) were reconstructed in two vectors to evaluate the GDP-fucose biosynthesis. Then, the fucT2 gene, encoding α1,2-fucosyltransferase, was introduced into the GDP-fucose-overproducing strains to realize 2'-FL biosynthesis. Furthermore, the genes in bypass pathways, including lacZ, fucI, fucK, and wcaJ, were inactivated to improve 2'-FL production. In addition, the two GDP-fucose synthesis pathways, along with fucT2, were transcriptionally fine-tuned to efficiently increase 2'-FL production. The final metabolically engineered E. coli produced 2.62 and 14.1 g/L in shake-flask and fed-batch cultivations, respectively.
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Affiliation(s)
- Wen Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yingying Zhu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Li Wan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Cuie Guang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
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10
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Liao Y, Ni Z, Wu J, Li Z, Ge Y, Chen X, Yao J. Effect of acetate metabolism modulation on 2'-fucosyllactose production in engineered Escherichia coli. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1885996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Affiliation(s)
- Yingxue Liao
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, PR China
- Scinece Island Branch, Graduate School of USTC, Hefei, PR China
| | - Zhijian Ni
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, PR China
- Scinece Island Branch, Graduate School of USTC, Hefei, PR China
| | - Jinyong Wu
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, PR China
- Huainan New Energy Research Center, Institute of Plasma Physics, Chinese Academy of Sciences, Huainan, Anhui, PR China
| | - Zhongkui Li
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, PR China
- Scinece Island Branch, Graduate School of USTC, Hefei, PR China
| | - Yuanfei Ge
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, PR China
- Scinece Island Branch, Graduate School of USTC, Hefei, PR China
| | - Xiangsong Chen
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, PR China
- Huainan New Energy Research Center, Institute of Plasma Physics, Chinese Academy of Sciences, Huainan, Anhui, PR China
| | - Jianming Yao
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, PR China
- Scinece Island Branch, Graduate School of USTC, Hefei, PR China
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11
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Ni Z, Li Z, Wu J, Ge Y, Liao Y, Yuan L, Chen X, Yao J. Multi-Path Optimization for Efficient Production of 2'-Fucosyllactose in an Engineered Escherichia coli C41 (DE3) Derivative. Front Bioeng Biotechnol 2020; 8:611900. [PMID: 33425876 PMCID: PMC7793955 DOI: 10.3389/fbioe.2020.611900] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 11/13/2020] [Indexed: 12/21/2022] Open
Abstract
2′-fucosyllactose (2′-FL), one of the simplest but most abundant oligosaccharides in human milk, has been demonstrated to have many positive benefits for the healthy development of newborns. However, the high-cost production and limited availability restrict its widespread use in infant nutrition and further research on its potential functions. In this study, on the basis of previous achievements, we developed a powerful cell factory by using a lacZ-mutant Escherichia coli C41 (DE3)ΔZ to ulteriorly increase 2′-FL production by feeding inexpensive glycerol. Initially, we co-expressed the genes for GDP-L-fucose biosynthesis and heterologous α-1,2-fucosyltransferase in C41(DE3)ΔZ through different plasmid-based expression combinations, functionally constructing a preferred route for 2′-FL biosynthesis. To further boost the carbon flux from GDP-L-fucose toward 2′-FL synthesis, deletion of chromosomal genes (wcaJ, nudD, and nudK) involved in the degradation of the precursors GDP-L-fucose and GDP-mannose were performed. Notably, the co-introduction of two heterologous positive regulators, RcsA and RcsB, was confirmed to be more conducive to GDP-L-fucose formation and thus 2′-FL production. Further a genomic integration of an individual copy of α-1,2-fucosyltransferase gene, as well as the preliminary optimization of fermentation conditions enabled the resulting engineered strain to achieve a high titer and yield. By collectively taking into account the intracellular lactose utilization, GDP-L-fucose availability, and fucosylation activity for 2′-FL production, ultimately a highest titer of 2′-FL in our optimized conditions reached 6.86 g/L with a yield of 0.92 mol/mol from lactose in the batch fermentation. Moreover, the feasibility of mass production was demonstrated in a 50-L fed-batch fermentation system in which a maximum titer of 66.80 g/L 2′-FL was achieved with a yield of 0.89 mol 2′-FL/mol lactose and a productivity of approximately 0.95 g/L/h 2′-FL. As a proof of concept, our preliminary 2′-FL production demonstrated a superior production performance, which will provide a promising candidate process for further industrial production.
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Affiliation(s)
- Zhijian Ni
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.,University of Science and Technology of China, Hefei, China
| | - Zhongkui Li
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.,University of Science and Technology of China, Hefei, China
| | - Jinyong Wu
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.,Wuhan Zhongke Optics Valley Green Biotechnology Co. Ltd., Wuhan, China
| | - Yuanfei Ge
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.,University of Science and Technology of China, Hefei, China
| | - Yingxue Liao
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.,University of Science and Technology of China, Hefei, China
| | - Lixia Yuan
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.,Wuhan Zhongke Optics Valley Green Biotechnology Co. Ltd., Wuhan, China
| | - Xiangsong Chen
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.,Wuhan Zhongke Optics Valley Green Biotechnology Co. Ltd., Wuhan, China
| | - Jianming Yao
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.,University of Science and Technology of China, Hefei, China
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12
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Zhu Y, Wan L, Li W, Ni D, Zhang W, Yan X, Mu W. Recent advances on 2'-fucosyllactose: physiological properties, applications, and production approaches. Crit Rev Food Sci Nutr 2020; 62:2083-2092. [PMID: 33938328 DOI: 10.1080/10408398.2020.1850413] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The trisaccharide, 2'-fucosyllactose (Fucα1-2Galβ1-4Glc; 2'-FL), is the most abundant oligosaccharide in human milk. It has numerous significant biological properties including prebiotics, antibacterial, antiviral, and immunomodulating effects, and has been approved as "generally recognized as safe" (GRAS) by the Food and Drug Administration (FDA) and as a novel food (NF) by the European Food Safety Authority (EFSA). 2'-FL not only serves as a food ingredient added in infant formula, but also as a dietary supplement and medical food material in food bioprocesses. There is considerable commercial interest in 2'-FL for its irreplaceable nutritional applications. This review aims at systematically elaborating key functional properties of 2'-FL as well as its applications. In addition, several approaches for 2'-FL production are described in this review, including chemical, chemo-enzymatical, and cell factory approaches, and the pivotal research results also have been summarized. With the rapid development of metabolic engineering and synthetic biology strategies, using the engineered cell factory for 2'-FL large-scale production might be a promising approach. From an economic and safety point of view, microbial selection for cell factory engineering in 2'-FL bioprocess also should be taken into consideration.
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Affiliation(s)
- Yingying Zhu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Li Wan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Wen Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Dawei Ni
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Wenli Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Xin Yan
- Department of Microbiology, College of Life Sciences, Key Laboratory for Microbiological Engineering of Agricultural Environment of Ministry of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
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13
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Wan L, Zhu Y, Li W, Zhang W, Mu W. Combinatorial Modular Pathway Engineering for Guanosine 5'-Diphosphate-l-fucose Production in Recombinant Escherichia coli. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:5668-5675. [PMID: 32336091 DOI: 10.1021/acs.jafc.0c01064] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Guanosine 5'-diphosphate (GDP)-l-fucose is an important nucleotide sugar involved in the synthesis of fucosylated oligosaccharides, such as fucosylated human milk oligosaccharides, which play important roles in physiological and pathological processes. Here, a combinatorial modular pathway engineering strategy was implemented to efficiently increase the intracellular titers of GDP-l-fucose in engineered Escherichia coli. The de novo GDP-l-fucose synthesis pathway was partitioned into two modules and fine-tuned at both transcriptional and translational levels, which remarkably improved the GDP-l-fucose production. In addition, the gene encoding the UDP-glucose lipid carrier transferase (WcaJ) was inactivated to eliminate the competing metabolite pathway from GDP-l-fucose to colanic acid. Furthermore, cofactors were regenerated to promote biocatalysis. Taken together, the final engineered strain EWL37, which could achieve a titer of 18.33 mg/L in shake-flask cultivation, showed 106.21 mg/L intracellular GDP-l-fucose accumulation and a DCW-specific GDP-l-fucose content of 4.28 mg/g through fed-batch cultivation. In general, this study demonstrated that the utilization of combinatorial modular pathway engineering significantly improved the de novo synthesis of GDP-l-fucose in engineered E. coli.
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Affiliation(s)
- Li Wan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yingying Zhu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wen Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wenli Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
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14
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Deng J, Gu L, Chen T, Huang H, Yin X, Lv X, Liu Y, Li N, Liu Z, Li J, Du G, Liu L. Engineering the Substrate Transport and Cofactor Regeneration Systems for Enhancing 2'-Fucosyllactose Synthesis in Bacillus subtilis. ACS Synth Biol 2019; 8:2418-2427. [PMID: 31550146 DOI: 10.1021/acssynbio.9b00314] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Human milk oligosaccharides (HMOs) have been proven to be beneficial to infants' intestinal health and immune systems. 2'-Fucosyllactose (2'-FL) is the most abundant and thoroughly studied HMO and has been approved to be an additive of infant formula. How to construct efficient and safe microbial cell factories for the production of 2'-FL attracts increasing attention. In this work, we engineered the Bacillus subtilis as an efficient 2'-FL producer by engineering the substrate transport and cofactor guanosine 5'-triphosphate (GTP) regeneration systems. First, we constructed a synthesis pathway for the 2'-FL precursor guanosine 5'-diphosphate-l-fucose (GDP-l-fucose) by introducing the salvage pathway gene fkp from Bacteriodes fragilis and improved the fucose importation by overexpressing the transporters. Then, the complete synthesis pathway of 2'-FL was constructed by introducing the heterologous fucosyltransferases from different sources, and it was found that the gene from Helicobacter pylori was the best one for 2'-FL synthesis. We also improved the substrate lactose importation by introducing heterologous lactose permeases and eliminated endogenous β-galactosidase (yesZ) to block the lactose degradation. Next, the production of 2'-FL and GDP-l-fucose was improved by fine-tuning the expression of cofactor guanosine 5'-triphosphate regeneration module genes gmd, ndk, guaA, guaC, ykfN, deoD, and xpt. Finally, a 3 L fed-batch fermentation was performed, and the highest 2'-FL titer reached 5.01 g/L with a yield up to 0.85 mol/mol fucose. We optimized the synthesis modules of 2'-FL in B. subtilis, and this provides a good starting point for metabolic engineering to further improve 2'-FL production in the future.
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Affiliation(s)
- Jieying Deng
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Liuyan Gu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Taichi Chen
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Hao Huang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Xiaoqiang Yin
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Xueqin Lv
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Yanfeng Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Nan Li
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co, Ltd., Shanghai 200436, China
| | - Zhenmin Liu
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co, Ltd., Shanghai 200436, China
| | - Jianghua Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Guocheng Du
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Long Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
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15
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Wang W, Zhang F, Wen Y, Hu Y, Yuan Y, Wei M, Zhou Y. Cell-free enzymatic synthesis of GDP-L-fucose from mannose. AMB Express 2019; 9:74. [PMID: 31134391 PMCID: PMC6536560 DOI: 10.1186/s13568-019-0798-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 05/16/2019] [Indexed: 01/06/2023] Open
Abstract
GDP-L-fucose, the key substrate for fucosyloligosaccharide biosynthesis, has been synthesized via a de novo pathway in bacteria. In the present study, genes for GDP-L-fucose biosynthesis were cloned into the expression vector pET-28a (+) to construct five E. coli strains, with recombinant enzymes being purified by using Ni-NTA chromatography. Following optimization of the 3-step reaction, Glk, ManB and ManC were added to the reaction mixture, after which Gmd and WcaG were added to overcome feedback inhibition from the end-product to produce GDP-L-fucose at 178.6 mg/l, with a yield of 14.1%. Our studies provide the basis for using cell-free enzyme production of GDP-L-fucose.
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16
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Bych K, Mikš MH, Johanson T, Hederos MJ, Vigsnæs LK, Becker P. Production of HMOs using microbial hosts — from cell engineering to large scale production. Curr Opin Biotechnol 2019; 56:130-137. [DOI: 10.1016/j.copbio.2018.11.003] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 11/01/2018] [Accepted: 11/08/2018] [Indexed: 12/14/2022]
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17
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Yu J, Shin J, Park M, Seydametova E, Jung SM, Seo JH, Kweon DH. Engineering of α-1,3-fucosyltransferases for production of 3-fucosyllactose in Escherichia coli. Metab Eng 2018; 48:269-278. [DOI: 10.1016/j.ymben.2018.05.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 05/12/2018] [Accepted: 05/31/2018] [Indexed: 12/23/2022]
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18
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Sprenger GA, Baumgärtner F, Albermann C. Production of human milk oligosaccharides by enzymatic and whole-cell microbial biotransformations. J Biotechnol 2017; 258:79-91. [PMID: 28764968 DOI: 10.1016/j.jbiotec.2017.07.030] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/25/2017] [Accepted: 07/26/2017] [Indexed: 12/14/2022]
Abstract
Human milk oligosaccharides (HMO) are almost unique constituents of breast milk and are not found in appreciable amounts in cow milk. Due to several positive aspects of HMO for the development, health, and wellbeing of infants, production of HMO would be desirable. As a result, scientists from different disciplines have developed methods for the preparation of single HMO compounds. Here, we review approaches to HMO preparation by (chemo-)enzymatic syntheses or by whole-cell biotransformation with recombinant bacterial cells. With lactose as acceptor (in vitro or in vivo), fucosyltransferases can be used for the production of 2'-fucosyllactose, 3-fucosyllactose, or more complex fucosylated core structures. Sialylated HMO can be produced by sialyltransferases and trans-sialidases. Core structures as lacto-N-tetraose can be obtained by glycosyltransferases from chemical donor compounds or by multi-enzyme cascades; recent publications also show production of lacto-N-tetraose by recombinant Escherichia coli bacteria and approaches to obtain fucosylated core structures. In view of an industrial production of HMOs, the whole cell biotransformation is at this stage the most promising option to provide human milk oligosaccharides as food additive.
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Affiliation(s)
- Georg A Sprenger
- Institute of Microbiology, University of Stuttgart, Allmandring 31, D-70569 Stuttgart, Germany.
| | - Florian Baumgärtner
- Institute of Microbiology, University of Stuttgart, Allmandring 31, D-70569 Stuttgart, Germany
| | - Christoph Albermann
- Institute of Microbiology, University of Stuttgart, Allmandring 31, D-70569 Stuttgart, Germany
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19
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Huang D, Yang K, Liu J, Xu Y, Wang Y, Wang R, Liu B, Feng L. Metabolic engineering of Escherichia coli for the production of 2′-fucosyllactose and 3-fucosyllactose through modular pathway enhancement. Metab Eng 2017; 41:23-38. [DOI: 10.1016/j.ymben.2017.03.001] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 02/14/2017] [Accepted: 03/08/2017] [Indexed: 01/20/2023]
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20
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Biotechnological production of fucosylated human milk oligosaccharides: Prokaryotic fucosyltransferases and their use in biocatalytic cascades or whole cell conversion systems. J Biotechnol 2016; 235:61-83. [DOI: 10.1016/j.jbiotec.2016.03.052] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 03/30/2016] [Accepted: 03/31/2016] [Indexed: 01/29/2023]
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21
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Zhai Y, Han D, Pan Y, Wang S, Fang J, Wang P, Liu XW. Enhancing GDP-fucose production in recombinant Escherichia coli by metabolic pathway engineering. Enzyme Microb Technol 2014; 69:38-45. [PMID: 25640723 DOI: 10.1016/j.enzmictec.2014.12.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 10/10/2014] [Accepted: 12/01/2014] [Indexed: 01/22/2023]
Abstract
Guanosine 5'-diphosphate (GDP)-fucose is the indispensible donor substrate for fucosyltransferase-catalyzed synthesis of fucose-containing biomolecules, which have been found involving in various biological functions. In this work, the salvage pathway for GDP-fucose biosynthesis from Bacterioides fragilis was introduced into Escherichia coli. Besides, the biosynthesis of guanosine 5'-triphosphate (GTP), an essential substrate for GDP-fucose biosynthesis, was enhanced via overexpression of enzymes involved in the salvage pathway of GTP biosynthesis. The production capacities of metabolically engineered strains bearing different combinations of recombinant enzymes were compared. The shake flask fermentation of the strain expressing Fkp, Gpt, Gmk and Ndk obtained the maximum GDP-fucose content of 4.6 ± 0.22 μmol/g (dry cell mass), which is 4.2 fold that of the strain only expressing Fkp. Through fed-batch fermentation, the GDP-fucose content further rose to 6.6 ± 0.14 μmol/g (dry cell mass). In addition to a better productivity than previous fermentation processes based on the de novo pathway for GDP-fucose biosynthesis, the established schemes in this work also have the advantage to be a potential avenue to GDP-fucose analogs encompassing chemical modification on the fucose residue.
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Affiliation(s)
- Yafei Zhai
- National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China; The State Key Laboratory of Microbial Technology and School of Life Science, Shandong University, Jinan, Shandong 250100, People's Republic of China
| | - Donglei Han
- National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China; The State Key Laboratory of Microbial Technology and School of Life Science, Shandong University, Jinan, Shandong 250100, People's Republic of China
| | - Ying Pan
- The State Key Laboratory of Microbial Technology and School of Life Science, Shandong University, Jinan, Shandong 250100, People's Republic of China
| | - Shuaishuai Wang
- National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China; The State Key Laboratory of Microbial Technology and School of Life Science, Shandong University, Jinan, Shandong 250100, People's Republic of China
| | - Junqiang Fang
- National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China
| | - Peng Wang
- National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China
| | - Xian-wei Liu
- National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China.
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Metabolic engineering of Corynebacterium glutamicum to produce GDP-L-fucose from glucose and mannose. Bioprocess Biosyst Eng 2013; 36:749-56. [PMID: 23404100 DOI: 10.1007/s00449-013-0900-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2012] [Accepted: 01/15/2013] [Indexed: 10/27/2022]
Abstract
Wild-type Corynebacterium glutamicum was metabolically engineered to convert glucose and mannose into guanosine 5'-diphosphate (GDP)-L-fucose, a precursor of fucosyl-oligosaccharides, which are involved in various biological and pathological functions. This was done by introducing the gmd and wcaG genes of Escherichia coli encoding GDP-D-mannose-4,6-dehydratase and GDP-4-keto-6-deoxy-D-mannose-3,5-epimerase-4-reductase, respectively, which are known as key enzymes in the production of GDP-L-fucose from GDP-D-mannose. Coexpression of the genes allowed the recombinant C. glutamicum cells to produce GDP-L-fucose in a minimal medium containing glucose and mannose as carbon sources. The specific product formation rate was much higher during growth on mannose than on glucose. In addition, the specific product formation rate was further increased by coexpressing the endogenous phosphomanno-mutase gene (manB) and GTP-mannose-1-phosphate guanylyl-transferase gene (manC), which are involved in the conversion of mannose-6-phosphate into GDP-D-mannose. However, the overexpression of manA encoding mannose-6-phosphate isomerase, catalyzing interconversion of mannose-6-phosphate and fructose-6-phosphate showed a negative effect on formation of the target product. Overall, coexpression of gmd, wcaG, manB and manC in C. glutamicum enabled production of GDP-L-fucose at the specific rate of 0.11 mg g cell(-1) h(-1). The specific GDP-L-fucose content reached 5.5 mg g cell(-1), which is a 2.4-fold higher than that of the recombinant E. coli overexpressing gmd, wcaG, manB and manC under comparable conditions. Well-established metabolic engineering tools may permit optimization of the carbon and cofactor metabolisms of C. glutamicum to further improve their production capacity.
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Lee WH, Pathanibul P, Quarterman J, Jo JH, Han NS, Miller MJ, Jin YS, Seo JH. Whole cell biosynthesis of a functional oligosaccharide, 2'-fucosyllactose, using engineered Escherichia coli. Microb Cell Fact 2012; 11:48. [PMID: 22545760 PMCID: PMC3442965 DOI: 10.1186/1475-2859-11-48] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Accepted: 04/17/2012] [Indexed: 11/27/2022] Open
Abstract
Background 2'-Fucosyllactose (2-FL) is a functional oligosaccharide present in human milk which protects against the infection of enteric pathogens. Because 2-FL can be synthesized through the enzymatic fucosylation of lactose with guanosine 5′-diphosphate (GDP)-l-fucose by α-1,2-fucosyltransferase (FucT2), an 2-FL producing Escherichia coli can be constructed through overexpressing genes coding for endogenous GDP- l-fucose biosynthetic enzymes and heterologous fucosyltransferase. Results The gene for FucT2 from Helicobacter pylori was introduced to the GDP- l-fucose producing recombinant E. coli BL21 star(DE3) strain. However, only small amount of 2-FL was produced in a batch fermentation because the E. coli BL21star(DE3) strain assimilated lactose instead of converting to 2-FL. As an alternative host, the E. coli JM109(DE3) strain which is incapable of assimilating lactose was chosen as a 2-FL producer. Whole cell biosynthesis of 2-FL from lactose was investigated in a series of batch fermentations using various concentrations of lactose. The results of batch fermentations showed that lactose was slowly assimilated by the engineered E. coli JM109(DE3) strain and 2-FL was synthesized without supplementation of another auxiliary sugar for cell growth. A maximum 2-FL concentration of 1.23 g/l was obtained from a batch fermentation with 14.5 g/l lactose. The experimentally obtained yield (g 2-FL/g lactose) corresponded to 20% of the theoretical maximum yield estimated by the elementary flux mode (EFM) analysis. Conclusions The experimental 2-FL yield in this study corresponded to about 20% of the theoretical maximum yield, which suggests further modifications via metabolic engineering of a host strain or optimization of fermentation processes might be carried out for improving 2-FL yield. Improvement of microbial production of 2-FL from lactose by engineered E. coli would increase the feasibility of utilizing 2-FL as a prebiotic in various foods.
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Affiliation(s)
- Won-Heong Lee
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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