Construction of EF-G knockdown strain of Mycobacterium smegmatis and drug resistance analysis / 生物工程学报
Chinese Journal of Biotechnology
; (12): 1050-1060, 2022.
Article
em Zh
| WPRIM
| ID: wpr-927762
Biblioteca responsável:
WPRO
ABSTRACT
As the only translational factor that plays a critical role in two translational processes (elongation and ribosome regeneration), GTPase elongation factor G (EF-G) is a potential target for antimicrobial agents. Both Mycobacterium smegmatis and Mycobacterium tuberculosis have two EF-G homologous coding genes, MsmEFG1 (MSMEG_1400) and MsmEFG2 (MSMEG_6535), fusA1 (Rv0684) and fusA2 (Rv0120c), respectively. MsmEFG1 (MSMEG_1400) and fusA1 (Rv0684) were identified as essential genes for bacterial growth by gene mutation library and bioinformatic analysis. To investigate the biological function and characteristics of EF-G in mycobacterium, two induced EF-G knockdown strains (Msm-ΔEFG1(KD) and Msm-ΔEFG2(KD)) from Mycobacterium smegmatis were constructed by clustered regularly interspaced short palindromic repeats interference (CRISPRi) technique. EF-G2 knockdown had no effect on bacterial growth, while EF-G1 knockdown significantly retarded the growth of mycobacterium, weakened the film-forming ability, changed the colony morphology, and increased the length of mycobacterium. It was speculated that EF-G might be involved in the division of bacteria. Minimal inhibitory concentration assay showed that inhibition of EF-G1 expression enhanced the sensitivity of mycobacterium to rifampicin, isoniazid, erythromycin, fucidic acid, capreomycin and other antibacterial agents, suggesting that EF-G1 might be a potential target for screening anti-tuberculosis drugs in the future.
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Texto completo:
1
Base de dados:
WPRIM
Assunto principal:
Proteínas de Bactérias
/
Resistência a Medicamentos
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Mycobacterium smegmatis
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Fator G para Elongação de Peptídeos
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Antituberculosos
Tipo de estudo:
Prognostic_studies
Idioma:
Zh
Revista:
Chinese Journal of Biotechnology
Ano de publicação:
2022
Tipo de documento:
Article