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- W2941279440 endingPage "800" @default.
- W2941279440 startingPage "787" @default.
- W2941279440 abstract "Sialic acids (SAs) are important functional sugars, and monomers of sialylated human milk oligosaccharides (sialylated HMOs or sialyllactoses), which are crucial for improving infant development and can facilitate infant brain development, maintain brain health, and enhance immunity. The most common form of SA is N-acetylneuraminic acid (NeuAc), and the main forms of sialyllactoses are 6'-sialyllactose (6'-SL) and 3'-sialyllactose (3'-SL). As functional food additive, the demand for NeuAc and sialyllactoses will continuously increase due to their wide and important fields of application. However, NeuAc and sialyllactoses produced by traditional extraction methods are inefficient and may cause allergen contamination, and cannot keep up with the rapidly increasing market demand. Therefore, the production of NeuAc and sialyllactoses by sustainable biotechnological methods have attracted increasing attention. In particular, the development of metabolic engineering and synthetic biology techniques and strategies have promoted efficient biosynthesis of NeuAc and sialyllactoses. In this review, we first discussed the application of NeuAc and sialyllactoses. Secondly, metabolic engineering and protein engineering-fueled progress of whole-cell catalysis and de novo synthesis of NeuAc and sialyllactoses were systematically summarized and compared. Furthermore, challenges of efficient microbial production of NeuAc and sialyllactoses as well as strategies for overcoming the challenges were discussed, such as clustered regularly interspaced short palindromic repeats interference (CRISPRi)-aided identification of key precursor transport pathways, synergistically debottleneck of kinetic and thermodynamic limits in synthetic pathways, and dynamic regulation of metabolic pathways for balancing cell growth and production. We hope this review can further facilitate the understanding of limiting factors that hampered efficient production of sialic acid and sialyllactoses, as well as contribute to the development of strategies for the construction of efficient production hosts for high-level production of sialic acid and sialyllactose based on synthetic biology tools and strategies." @default.
- W2941279440 created "2019-05-03" @default.
- W2941279440 creator A5004433515 @default.
- W2941279440 creator A5005627824 @default.
- W2941279440 creator A5019397177 @default.
- W2941279440 creator A5048918848 @default.
- W2941279440 creator A5053438728 @default.
- W2941279440 creator A5063920010 @default.
- W2941279440 date "2019-09-01" @default.
- W2941279440 modified "2023-10-15" @default.
- W2941279440 title "Microbial production of sialic acid and sialylated human milk oligosaccharides: Advances and perspectives" @default.
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