Compositions and methods are provided for modulating growth of a genetically modified bacterial cell present in a human organ, for modulating growth of a genetically modified bacterial cell in an organ (e.g., gut), for displacing at least a portion of a population of bacterial cells in an organ, and for facilitating gut colonization by a genetically modified bacterial cell. Also provided are genetically modified bacterial cells, e.g., cells that include a heterologous carbohydrate-utilization gene or gene set that provides for the ability to utilize as a carbon source a rare carbohydrate of interest that is utilized as a carbon source by less than 50% of bacterial cells present in a human microbiome.
本发明提供了用于调节存在于人体器官中的转
基因细菌细胞的生长、调节转
基因细菌细胞在器官(如肠道)中的生长、取代器官中细菌细胞群的至少一部分以及促进转
基因细菌细胞在肠道中定植的组合物和方法。此外,还提供了转
基因细菌细胞,例如,包括异源
碳水化合物利用
基因或
基因组的细胞,该
基因或
基因组具有利用稀有
碳水化合物作为碳源的能力。