Abstract
Guangdong Province, China’s largest economy, has a high incidence of tuberculosis (TB). At present, there are few reports on the distribution, transmission and drug resistance of Mycobacterium tuberculosis (Mtb) strains in this region. In this study, we performed minimum inhibitory concentration testing for 14 anti-TB drugs and whole-genome sequencing of 713 clinical Mtb isolates from 20,662 sputum culture-positive tuberculosis patients registered at 31 tuberculosis drug resistance surveillance sites covering 20 cities in Guangdong Province from 2016 to 2018. Moreover, we evaluated genome-wide associations between mutations and drug resistance, and further investigated the differences in the MICs of mutations. The epidemiology, drug-resistant phenotypes and whole genome sequencing data of 713 clinical Mtb isolates were analyzed, revealing the lineage distribution and drug-resistant gene profiles in Guangdong Province. WGS combined with quantitative MIC measurements identified several novel loci associated with resistance, of which 16 loci were found to be related to resistance to more than one drug. This study analyzed the lineage distribution, prevalence characteristics and resistance-corresponding gene profiles of Mtb isolates in Guangdong province, and provided a theoretical basis for the formulation of tuberculosis prevention and control policy in the province.
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The raw data of WGS has already been submitted to the Sequence Read Archive (SRA) database. The BioProject accession numbers are PRJNA866200.
Abbreviations
- TB:
-
Tuberculosis
- Mtb:
-
Mycobacterium tuberculosis
- MDR/RR–TB:
-
Isoniazid and rifampicin TB or rifampicin-resistant TB
- WGS:
-
Whole-genome sequencing
- MIC:
-
Minimum inhibitory concentration
- INH:
-
Isoniazid
- RIF:
-
Rifampicin
- SM:
-
Streptomycin
- PZA:
-
Pyrazinamide
- EMB:
-
Ethambutol
- OFX:
-
Ofloxacin
- RBU:
-
Rifabutin
- MFX:
-
Moxifloxacin
- PAS:
-
Para-aminosalicylic acid
- LFX:
-
Levofloxacin
- CAP:
-
Capreomycin
- AKM:
-
Amikacin
- KM:
-
Kanamycin
- PTO:
-
Prothionamide
- ETH:
-
Ethionamide
- GWAS:
-
Genome-wide association study
- QQ:
-
Quantile-quantile
- LJ:
-
Löwenstein–Jensen
- NTM:
-
Non-tuberculosis mycobacteria
- DST:
-
Drug susceptibility testing
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Acknowledgements
The authors thank the partners of TB drug resistance monitoring stations in Guangdong province for their hard work in sorting out patient information and collecting Mtb strains. The authors thank Tao Chen, Zhenyan Li and Li Yu, formerly working in Center for Tuberculosis Control of Guangdong Province, for their hard work in the establishment of biobank. The authors express appreciation of Zhichao Chen from Shanghai Gene-Optimal Science &Technology Co., Ltd for help with WGS analysis.
Funding
This work was supported by a Major Infectious Disease Prevention and Control of the National Science and Technique Major Project [2018ZX10715004], the Science and Technology Planning Project of Guangzhou [202201010785] and Medical Science Foundation of Guangdong Province [B2021012].
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Wenjing Wei, Yuhui Chen and Meiling Yu conceived the study. Wenjing Wei and Yuhui Chen acquired funding, supervised and administered the project. Chenchen Zhang, Zhuhua Wu, Xinchun Huang, Yuchuan Zhao, Meiling Yu and Qi Sun processed the samples and performed the experiments. Chenchen Zhang, Meiling Yu, Yanmei Chen, Qi Sun, Huixin Guo and Wenya Dong were responsible for collecting clinical strains and conducting drug susceptibility tests. Chenchen Zhang, Yuchuan Zhao and Wenjing Wei analyzed the data. Qinghua Liao, Huizhong Wu and Xunxun Chen were responsible for providing guidance on clinical TB drug use. Anqi Liang and Wenya Dong were responsible for clinical strain information collection and collation. Chenchen Zhang, Wenjing Wei and Yuhui Chen prepared the manuscript. All the authors have read the final version of the manuscript and have approved it.
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The clinical Mtb isolates used in this study were collected from the Major Infectious Disease Prevention and Control of the National Science and Technique Major Project and preserved by the Biobank of Center for Tuberculosis Control of Guangdong Province. Written informed consent was also obtained from each patient in face-to-face interviews by trained clinicians. The study was performed in accordance with the Declaration of Helsinki and approved by the Medical Ethics Committee of Center for Tuberculosis Control of Guangdong Province, China.
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Zhang, C., Wu, Z., Huang, X. et al. A Profile of Drug-Resistant Mutations in Mycobacterium tuberculosis Isolates from Guangdong Province, China. Indian J Microbiol (2024). https://doi.org/10.1007/s12088-024-01236-3
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DOI: https://doi.org/10.1007/s12088-024-01236-3