Liao Chaoyong, Ayansola Hammed, Ma Yanbo, Ito Koichi, Guo Yuming, Zhang Bingkun
State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, China Agricultural University, Beijing, China.
Henan International Joint Laboratory of Animal Welfare and Health Breeding, Department of Animal Physiology, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China.
Front Bioeng Biotechnol. 2021 Jul 19;9:695526. doi: 10.3389/fbioe.2021.695526. eCollection 2021.
The production of nutraceutical compounds through biosynthetic approaches has received considerable attention in recent years. For example, Menaquinone-7 (MK-7), a sub-type of Vitamin K2, biosynthesized from (), proved to be more efficiently produced than the conventional chemical synthesis techniques. This is possible due to the development of as a chassis cell during the biosynthesis stages. Hence, it is imperative to provide insights on the membrane permeability modifications, biofilm reactors, and fermentation optimization as advanced techniques relevant to MK-7 production. Although the traditional gene-editing method of homologous recombination improves the biosynthetic pathway, CRISPR-Cas9 could potentially resolve the drawbacks of traditional genome editing techniques. For these reasons, future studies should explore the applications of CRISPRi (CRISPR interference) and CRISPRa (CRISPR activation) system gene-editing tools in the MK-7 anabolism pathway.
近年来,通过生物合成方法生产营养化合物受到了广泛关注。例如,维生素K2的一种亚型甲萘醌-7(MK-7),由()生物合成,事实证明其生产效率高于传统化学合成技术。这得益于在生物合成阶段作为底盘细胞的()的发展。因此,有必要深入了解与MK-7生产相关的先进技术,如膜通透性修饰、生物膜反应器和发酵优化。尽管传统的同源重组基因编辑方法改善了生物合成途径,但CRISPR-Cas9可能会解决传统基因组编辑技术的缺点。基于这些原因,未来的研究应探索CRISPRi(CRISPR干扰)和CRISPRa(CRISPR激活)系统基因编辑工具在MK-7合成代谢途径中的应用。