rpoB Mutations and Effects on Rifampin Resistance in Mycobacterium tuberculosis

被引：40
作者：
Li, Ma-chao [1 ]
Lu, Jie [2 ]
Lu, Yao [1 ,3 ]
Xiao, Tong-yang [4 ]
Liu, Hai-can [1 ]
Lin, Shi-qiang [5 ]
Xu, Da [1 ]
Li, Gui-lian [1 ]
Zhao, Xiu-qin [1 ]
Liu, Zhi-guang [1 ]
Zhao, Li-li [1 ]
Wan, Kang-lin [1 ]
机构：
[1] Chinese Ctr Dis Control & Prevent, Natl Inst Communicable Dis Control & Prevent, State Key Lab Infect Dis Prevent & Control, Beijing, Peoples R China
[2] Capital Med Univ, Beijing Key Lab Pediat Dis Otolaryngol Head & Nec, Beijing Childrens Hosp,Beijing Pediat Res Inst, Natl Ctr Childrens Hlth,MOE Key Lab Major Dis Chi, Beijing, Peoples R China
[3] Wenzhou Med Univ, Sch Lab Med & Life Sci, Wenzhou, Peoples R China
[4] Southern Univ Sci & Technol, Shenzhen Peoples Hosp 3, Guangdong Key Lab Diag & Treatment Emerging Infec, Shenzhen, Peoples R China
[5] Fujian Agr & Forestry Univ, Coll Life Sci, Dept Bioinformat, Fuzhou, Peoples R China
来源：
INFECTION AND DRUG RESISTANCE | 2021年 / 14卷
关键词：
Mycobacterium tuberculosis; rifampin resistance; structure; mutation; RNA-POLYMERASE; STRUCTURAL BASIS; SUSCEPTIBILITY; TRANSCRIPTION; RIFABUTIN; MECHANISM; MTB/RIF; SYSTEM; MICS; WEST;
D O I：
10.2147/IDR.S333433
中图分类号：
R51 [传染病];
学科分类号：
100401 ;
摘要：
Objective: To investigate the mutations within the whole rpoB gene of Mycobacterium tuberculosis and analyze their effects on rifampin (RIF) resistance based on crystal structure. Methods: We sequenced the entire rpoB gene in 175 tuberculosis isolates and quantified their minimum inhibitory concentrations using microplate-based assays. Additionally, the structural interactions between wild-type/mutant RpoB and RIF were also analyzed. Results: Results revealed that a total of 34 mutations distributed across 17 different sites within the whole rpoB gene were identified. Of the 34 mutations, 25 could alter the structural interaction between RpoB and RIF and contribute to RIF resistance. Statistical analysis showed that S450L, H445D, H445Y and H445R mutations were associated with high-level RIF resistance, while D435V was associated with moderate-level RIF resistance. Conclusion: Some mutations within the rpoB gene could affect the interaction between RpoB and RIF and thus are associated with RIF resistance. These findings could be helpful to design new antibiotics and develop novel diagnostic tools for drug resistance in TB.
引用
收藏
页码：4119 / 4128
页数：10
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