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METHOD FOR TRACING GRAM-NEGATIVE BACTERIA INSIDE ANIMAL MODEL USING STABLE AND BIOLUMINESCENCE-BASED EXPRESSION SYSTEM THEREFOR
METHOD FOR TRACING GRAM-NEGATIVE BACTERIA INSIDE ANIMAL MODEL USING STABLE AND BIOLUMINESCENCE-BASED EXPRESSION SYSTEM THEREFOR
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机译:基于稳定和基于生物发光的表达系统追踪动物模型内革兰氏阴性细菌的方法
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摘要
A method of creating a biotechnological product and an efficient and stable bio-luminescence vector which could be used for tracking Gram-negative bacteria when distributing inside animal body are provided. Through conjugation, this auto-luminescence vector can be easily transmitted from bacteria to bacteria among Gram-negative bacteria, and may facilitate bacteria to be luminescence-labeled for subsequently analyzing the dynamic change of bio-luminescent bacteria within animal body in vivo. This system includes a lacZ promoter-driven IuxABCDE, a high copy number of ColE1 replicon, and a high plasmid stability of the conjugative and broad host-ranged plasmid pSE34 from Salmonella enterica serovar Enteritidis Sal550. This resulting construct pSE-Lux1 can not only conjugatively transmit among bacteria with broad host range, but also stably maintain in bacteria to efficiently express the bio-luminescent IuxABCDE without supplementing the subtract for luciferases and the antibiotics for plasmid selection.
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