Lin Yuping, Wang Qinhong
CAS Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China.
Sheng Wu Gong Cheng Xue Bao. 2019 Oct 25;35(10):1925-1941. doi: 10.13345/j.cjb.190247.
Harnessing industrial microorganisms to utilize renewable feedstocks and meanwhile produce biofuels, bulk chemicals, food ingredients, nutraceuticals, pharmaceuticals, industrial enzymes, etc. is the basis for successful biological industries. Robust traits of industrial microorganisms including high yield and productivity as well as stress tolerance are controlled by sophisticated genetic regulatory networks. Engineering robustness of industrial microorganisms requires systematic and global perturbations at the genome-wide scale to accelerate the accumulation of diversified genotypic mutations, thus generating desirable phenotypes. We review heve the mechanisms of genetic regulation and stress response in robust industrial organisms, the global perturbations and multiplex accelerated evolution at the genome-wide scale, as well as the global perturbation of cellular redox balance. In the future, based on system biology and synthetic biology, more efforts should be further devoted to understanding the mechanisms behind robust traits in industrial microorganisms under industrial niches for modeling and prediction as well as systematic engineering.
利用工业微生物来利用可再生原料,同时生产生物燃料、大宗化学品、食品成分、营养保健品、药品、工业酶等,是成功的生物产业的基础。工业微生物的强大特性,包括高产率、高生产力以及抗逆性,是由复杂的基因调控网络控制的。对工业微生物进行鲁棒性工程改造需要在全基因组范围内进行系统的全局扰动,以加速多样化基因型突变的积累,从而产生理想的表型。我们综述了健壮工业生物中的遗传调控和应激反应机制、全基因组范围内的全局扰动和多重加速进化,以及细胞氧化还原平衡的全局扰动。未来,基于系统生物学和合成生物学,应进一步加大努力,以了解工业微生物在工业生态位下强大特性背后的机制,用于建模、预测以及系统工程。