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Morey-León G, Andrade-Molina D, Fernández-Cadena JC, Berná L. Comparative genomics of drug-resistant strains of Mycobacterium tuberculosis in Ecuador. BMC Genomics 2022; 23:844. [PMID: 36544084 PMCID: PMC9769008 DOI: 10.1186/s12864-022-09042-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 11/23/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Tuberculosis is a serious infectious disease affecting millions of people. In spite of efforts to reduce the disease, increasing antibiotic resistance has contributed to persist in the top 10 causes of death worldwide. In fact, the increased cases of multi (MDR) and extreme drug resistance (XDR) worldwide remains the main challenge for tuberculosis control. Whole genome sequencing is a powerful tool for predicting drug resistance-related variants, studying lineages, tracking transmission, and defining outbreaks. This study presents the identification and characterization of resistant clinical isolates of Mycobacterium tuberculosis including a phylogenetic and molecular resistance profile study by sequencing the complete genome of 24 strains from different provinces of Ecuador. RESULTS Genomic sequencing was used to identify the variants causing resistance. A total of 15/21 isolates were identified as MDR, 4/21 as pre-XDR and 2/21 as XDR, with three isolates discarded due to low quality; the main sub-lineage was LAM (61.9%) and Haarlem (19%) but clades X, T and S were identified. Of the six pre-XDR and XDR strains, it is noteworthy that five come from females; four come from the LAM sub-lineage and two correspond to the X-class sub-lineage. A core genome of 3,750 genes, distributed in 295 subsystems, was determined. Among these, 64 proteins related to virulence and implicated in the pathogenicity of M. tuberculosis and 66 possible pharmacological targets stand out. Most variants result in nonsynonymous amino acid changes and the most frequent genotypes were identified as conferring resistance to rifampicin, isoniazid, ethambutol, para-aminosalicylic acid and streptomycin. However, an increase in the resistance to fluoroquinolones was detected. CONCLUSION This work shows for the first time the variability of circulating resistant strains between men and women in Ecuador, highlighting the usefulness of genomic sequencing for the identification of emerging resistance. In this regard, we found an increase in fluoroquinolone resistance. Further sampling effort is needed to determine the total variability and associations with the metadata obtained to generate better health policies.
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Affiliation(s)
- Gabriel Morey-León
- grid.418532.90000 0004 0403 6035Laboratorio de Interacciones Hospedero-Patógeno, Unidad de Biología Molecular, Institut Pasteur de Montevideo, Montevideo, Uruguay ,grid.442157.10000 0001 1183 0630Universidad de Guayaquil, Guayaquil, Ecuador ,grid.442156.00000 0000 9557 7590Facultad de Ciencias de la Salud, Universidad Espíritu Santo, Samborondón, Ecuador
| | - Derly Andrade-Molina
- grid.442156.00000 0000 9557 7590Laboratorio de Ciencias Ómicas, Universidad Espíritu Santo, Samborondón, Ecuador
| | - Juan Carlos Fernández-Cadena
- grid.442156.00000 0000 9557 7590Laboratorio de Ciencias Ómicas, Universidad Espíritu Santo, Samborondón, Ecuador
| | - Luisa Berná
- grid.418532.90000 0004 0403 6035Laboratorio de Interacciones Hospedero-Patógeno, Unidad de Biología Molecular, Institut Pasteur de Montevideo, Montevideo, Uruguay ,grid.11630.350000000121657640Facultad de Ciencias, Unidad de Genómica Evolutiva, Universidad de La República, Montevideo, Uruguay
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Whole-genome sequencing as a tool for studying the microevolution of drug-resistant serial Mycobacterium tuberculosis isolates. Tuberculosis (Edinb) 2021; 131:102137. [PMID: 34673379 DOI: 10.1016/j.tube.2021.102137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/14/2021] [Accepted: 10/03/2021] [Indexed: 11/21/2022]
Abstract
Treatment of drug-resistant tuberculosis requires extended use of more toxic and less effective drugs and may result in retreatment cases due to failure, abandonment or disease recurrence. It is therefore important to understand the evolutionary process of drug resistance in Mycobacterium tuberculosis. We here in describe the microevolution of drug resistance in serial isolates from six previously treated patients. Drug resistance was initially investigated through phenotypic methods, followed by genotypic approaches. The use of whole-genome sequencing allowed the identification of mutations in the katG, rpsL and rpoB genes associated with drug resistance, including the detection of rare mutations in katG and mixed populations of strains. Molecular docking simulation studies of the impact of observed mutations on isoniazid binding were also performed. Whole-genome sequencing detected 266 single nucleotide polymorphisms between two isolates obtained from one patient, suggesting a case of exogenous reinfection. In conclusion, sequencing technologies can detect rare mutations related to drug resistance, identify subpopulations of resistant strains, and identify diverse populations of strains due to exogenous reinfection, thus improving tuberculosis control by guiding early implementation of appropriate clinical and therapeutic interventions.
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Conceição EC, Salvato RS, Gomes KM, Guimarães AEDS, da Conceição ML, Souza e Guimarães RJDP, Sharma A, Furlaneto IP, Barcellos RB, Bollela VR, Anselmo LMP, Sisco MC, Niero CV, Ferrazoli L, Refrégier G, Lourenço MCDS, Gomes HM, de Brito AC, Catanho M, Duarte RS, Suffys PN, Lima KVB. Molecular epidemiology of Mycobacterium tuberculosis in Brazil before the whole genome sequencing era: a literature review. Mem Inst Oswaldo Cruz 2021; 116:e200517. [PMID: 33729319 PMCID: PMC7976556 DOI: 10.1590/0074-02760200517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 02/11/2021] [Indexed: 11/22/2022] Open
Abstract
Molecular-typing can help in unraveling epidemiological scenarios and improvement for disease control strategies. A literature review of Mycobacterium tuberculosis transmission in Brazil through genotyping on 56 studies published from 1996-2019 was performed. The clustering rate for mycobacterial interspersed repetitive units - variable tandem repeats (MIRU-VNTR) of 1,613 isolates were: 73%, 33% and 28% based on 12, 15 and 24-loci, respectively; while for RFLP-IS6110 were: 84% among prison population in Rio de Janeiro, 69% among multidrug-resistant isolates in Rio Grande do Sul, and 56.2% in general population in São Paulo. These findings could improve tuberculosis (TB) surveillance and set up a solid basis to build a database of Mycobacterium genomes.
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Affiliation(s)
- Emilyn Costa Conceição
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia
Evandro Chagas, Programa de Pós-Graduação em Pesquisa Clínica e Doenças Infecciosas,
Rio de Janeiro, RJ, Brasil
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia
Evandro Chagas, Laboratório de Bacteriologia e Bioensaios em Micobactérias, Rio de
Janeiro, RJ, Brasil
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório
de Biologia Molecular Aplicada a Micobactérias, Rio de Janeiro, RJ, Brasil
| | - Richard Steiner Salvato
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação
em Biologia Celular e Molecular, Porto Alegre, RS, Brasil
- Secretaria Estadual de Saúde do Rio Grande do Sul, Centro Estadual
de Vigilância em Saúde, Centro de Desenvolvimento Científico e Tecnológico, Porto
Alegre, RS, Brasil
| | - Karen Machado Gomes
- Fundação Oswaldo Cruz-Fiocruz, Escola Nacional de Saúde Pública
Sergio Arouca, Centro de Referência Professor Hélio Fraga, Laboratório de Referência
Nacional para Tuberculose e outras Micobacterioses, Rio de Janeiro, RJ, Brasil
| | - Arthur Emil dos Santos Guimarães
- Universidade do Estado do Pará, Instituto de Ciências Biológicas e
da Saúde, Pós-Graduação Biologia Parasitária na Amazônia, Belém, PA, Brasil
- Instituto Evandro Chagas, Seção de Bacteriologia e Micologia,
Ananindeua, PA, Brasil
| | - Marília Lima da Conceição
- Universidade do Estado do Pará, Instituto de Ciências Biológicas e
da Saúde, Pós-Graduação Biologia Parasitária na Amazônia, Belém, PA, Brasil
- Instituto Evandro Chagas, Seção de Bacteriologia e Micologia,
Ananindeua, PA, Brasil
| | | | - Abhinav Sharma
- International Institute of Information Technology, Department of
Data Science, Bangalore, India
| | | | - Regina Bones Barcellos
- Secretaria Estadual de Saúde do Rio Grande do Sul, Centro Estadual
de Vigilância em Saúde, Centro de Desenvolvimento Científico e Tecnológico, Porto
Alegre, RS, Brasil
| | - Valdes Roberto Bollela
- Universidade de São Paulo, Departamento de Clínica Médica da
Faculdade de Medicina de Ribeirão Preto, Ribeirão Preto, SP, Brasil
| | - Lívia Maria Pala Anselmo
- Universidade de São Paulo, Departamento de Clínica Médica da
Faculdade de Medicina de Ribeirão Preto, Ribeirão Preto, SP, Brasil
| | - Maria Carolina Sisco
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório
de Biologia Molecular Aplicada a Micobactérias, Rio de Janeiro, RJ, Brasil
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia
Paulo de Góes, Laboratório de Micobactérias, Rio de Janeiro, RJ, Brasil
| | - Cristina Viana Niero
- Universidade Federal de São Paulo, Departamento de Microbiologia,
Imunologia e Parasitologia, São Paulo, SP, Brasil
| | - Lucilaine Ferrazoli
- Instituto Adolfo Lutz, Centro de Bacteriologia, Núcleo de
Tuberculose e Micobacterioses, São Paulo, SP, Brasil
| | - Guislaine Refrégier
- Universit e Paris-Saclay, Ecologie Systematique Evolution, Centre
National de la Recherche Scientifique, AgroParisTech, Orsay, France
| | - Maria Cristina da Silva Lourenço
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia
Evandro Chagas, Laboratório de Bacteriologia e Bioensaios em Micobactérias, Rio de
Janeiro, RJ, Brasil
| | - Harrison Magdinier Gomes
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório
de Biologia Molecular Aplicada a Micobactérias, Rio de Janeiro, RJ, Brasil
| | - Artemir Coelho de Brito
- Coordenação Geral de Vigilância das Doenças de Transmissão
Respiratória de Condições Crônicas, Brasília, DF, Brasil
| | - Marcos Catanho
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório
de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Rafael Silva Duarte
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia
Paulo de Góes, Laboratório de Micobactérias, Rio de Janeiro, RJ, Brasil
| | - Philip Noel Suffys
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório
de Biologia Molecular Aplicada a Micobactérias, Rio de Janeiro, RJ, Brasil
| | - Karla Valéria Batista Lima
- Universidade do Estado do Pará, Instituto de Ciências Biológicas e
da Saúde, Pós-Graduação Biologia Parasitária na Amazônia, Belém, PA, Brasil
- Instituto Evandro Chagas, Seção de Bacteriologia e Micologia,
Ananindeua, PA, Brasil
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