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Otchere ID, Asante-Poku A, Akpadja KF, Diallo AB, Sanou A, Asare P, Osei-Wusu S, Onyejepu N, Diarra B, Dagnra YA, Kehinde A, Antonio M, Yeboah-Manu D. Opinion review of drug resistant tuberculosis in West Africa: tackling the challenges for effective control. Front Public Health 2024; 12:1374703. [PMID: 38827613 PMCID: PMC11141065 DOI: 10.3389/fpubh.2024.1374703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/29/2024] [Indexed: 06/04/2024] Open
Abstract
Drug-resistant (DR) tuberculosis (TB) is a major public health concern globally, complicating TB control and management efforts. West Africa has historically faced difficulty in combating DR-TB due to limited diagnostic skills, insufficient access to excellent healthcare, and ineffective healthcare systems. This has aided in the emergence and dissemination of DR Mycobacterium tuberculosis complex (MTBC) strains in the region. In the past, DR-TB patients faced insufficient resources, fragmented efforts, and suboptimal treatment outcomes. However, current efforts to combat DR-TB in the region are promising. These efforts include strengthening diagnostic capacities, improving access to quality healthcare services, and implementing evidence-based treatment regimens for DR-TB. Additionally, many West African National TB control programs are collaborating with international partners to scale up laboratory infrastructure, enhance surveillance systems, and promote infection control measures. Moreso, novel TB drugs and regimens, such as bedaquiline and delamanid, are being introduced to improve treatment outcomes for DR-TB cases. Despite these obstacles, there is optimism for the future of DR-TB control in West Africa. Investments are being made to improve healthcare systems, expand laboratory capacity, and support TB research and innovation. West African institutions are now supporting knowledge sharing, capacity building, and resource mobilization through collaborative initiatives such as the West African Network for TB, AIDS, and Malaria (WANETAM), the West African Health Organization (WAHO), and other regional or global partners. These efforts hold promise for improved diagnostics, optimized treatment regimens, and provide better patient outcomes in the future where drug-resistant TB in WA can be effectively controlled, reducing the burden of the disease, and improving the health outcomes of affected individuals.
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Affiliation(s)
- Isaac Darko Otchere
- Bacteriology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
- Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, Banjul, Gambia
| | - Adwoa Asante-Poku
- Bacteriology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | | | - Awa Ba Diallo
- Biological Sciences Department, Faculty of Pharmacy at Cheikh Anta Diop University, Dakar, Senegal
| | - Adama Sanou
- Centre Muraz, Institut National de Santé Publique, Bobo-Dioulasso, Burkina Faso
| | - Prince Asare
- Bacteriology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Stephen Osei-Wusu
- Bacteriology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Nneka Onyejepu
- Microbiology Department, Center for Tuberculosis Research Laboratory, Nigerian Institute of Medical Research, Lagos, Nigeria
| | - Bassirou Diarra
- University Clinical Research Center, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | | | - Aderemi Kehinde
- Department of Medical Microbiology and Parasitology, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Martin Antonio
- Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, Banjul, Gambia
- Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Centre for Epidemic Preparedness and Response, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Dorothy Yeboah-Manu
- Bacteriology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
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Balamurugan M, Banerjee R, Kasibhatla SM, Achalere A, Joshi R. Understanding the Genetic Diversity of Mycobacterium africanum Using Phylogenetics and Population Genomics Approaches. Front Genet 2022; 13:800083. [PMID: 35495132 PMCID: PMC9043288 DOI: 10.3389/fgene.2022.800083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 03/14/2022] [Indexed: 11/13/2022] Open
Abstract
A total of two lineages of Mycobacterium tuberculosis var. africanum (Maf), L5 and L6, which are members of the Mycobacterium tuberculosis complex (MTBC), are responsible for causing tuberculosis in West Africa. Regions of difference (RDs) are usually used for delineation of MTBC. With increased data availability, single nucleotide polymorphisms (SNPs) promise to provide better resolution. Publicly available 380 Maf samples were analyzed for identification of “core-cluster-specific-SNPs,” while additional 270 samples were used for validation. RD-based methods were used for lineage-assignment, wherein 31 samples remained unidentified. The genetic diversity of Maf was estimated based on genome-wide SNPs using phylogeny and population genomics approaches. Lineage-based clustering (L5 and L6) was observed in the whole genome phylogeny with distinct sub-clusters. Population stratification using both model-based and de novo approaches supported the same observations. L6 was further delineated into three sub-lineages (L6.1–L6.3), whereas L5 was grouped as L5.1 and L5.2 based on the occurrence of RD711. L5.1 and L5.2 were further divided into two (L5.1.1 and L5.1.2) and four (L5.2.1–L5.2.4) sub-clusters, respectively. Unassigned samples could be assigned to definite lineages/sub-lineages based on clustering observed in phylogeny along with high-confidence posterior membership scores obtained during population stratification. Based on the (sub)-clusters delineated, “core-cluster-specific-SNPs” were derived. Synonymous SNPs (137 in L5 and 128 in L6) were identified as biomarkers and used for validation. Few of the cluster-specific missense variants in L5 and L6 belong to the central carbohydrate metabolism pathway which include His6Tyr (Rv0946c), Glu255Ala (Rv1131), Ala309Gly (Rv2454c), Val425Ala and Ser112Ala (Rv1127c), Gly198Ala (Rv3293) and Ile137Val (Rv0363c), Thr421Ala (Rv0896), Arg442His (Rv1248c), Thr218Ile (Rv1122), and Ser381Leu (Rv1449c), hinting at the differential growth attenuation. Genes harboring multiple (sub)-lineage-specific “core-cluster” SNPs such as Lys117Asn, Val447Met, and Ala455Val (Rv0066c; icd2) present across L6, L6.1, and L5, respectively, hinting at the association of these SNPs with selective advantage or host-adaptation. Cluster-specific SNPs serve as additional markers along with RD-regions for Maf delineation. The identified SNPs have the potential to provide insights into the genotype–phenotype correlation and clues for endemicity of Maf in the African population.
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Kone B, Somboro AM, Kone M, Holl JL, Baya B, Dabitao D, Diallo D, Diarra B, Kone A, Sarro YDS, Sanogo M, Togo AC, Murphy RL, Diallo S, Coulibaly N, Camara F, Samake S, Diakite M, Doumbia S, Maiga M. Molecular epidemiology and genetic diversity of Mycobacterium tuberculosis complex in referral health centers of Bamako, Mali: What is new? Int J Infect Dis 2022; 117:204-211. [PMID: 35134562 PMCID: PMC9055845 DOI: 10.1016/j.ijid.2022.01.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 01/22/2022] [Accepted: 01/27/2022] [Indexed: 11/29/2022] Open
Abstract
Background and Aims: Tuberculosis (TB) remains an important global health issue worldwide. Despite this scourge threatening many human lives, especially in developing countries, thus far, no advanced molecular epidemiology study using recent and more accurate tools has been conducted in Mali. Therefore, this study aimed to use variable-number tandem repeats of mycobacterial interspersed repetitive units (MIRU-VNTR) technology coupled with the spoligotyping method to accurately determine the hot spots and establish the epidemiological transmission links of TB in Bamako, Mali. Methods: In a cross-sectional study, 245 isolates of Mycobacterium tuberculosis complex (MTBC) were characterized using spoligotyping and MIRU-VNTR, and an epidemiological investigation was conducted. Results: Of the 245 isolates, 184 (75.1%) were formally identified. The most widespread strain was the Cameroon strain (83; 45.1%). Eight major clusters were identified: Ghana (27; 14.7%), West African 2 (22; 12%), Haarlem (13; 7.1%), H37Rv (t) (8; 4.3%), Latin American Mediterranean (8; 4.3%), and Uganda I and II (6; 3.3%). Statistical analysis showed a significant difference between lineages from the respective referral health centers of Bamako, Mali (P = 0.01). Conclusion: This study establishes, for the first time, an accurate spatial distribution of circulating MTB strains in Bamako, Mali. The data was used to identify strains and “hot spots” causing TB infection and can also be used for more targeted public health responses, particularly for hot spots of drug-resistant strains.
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Affiliation(s)
- Bourahima Kone
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali.
| | - Anou M Somboro
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali; School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Mahamadou Kone
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Jane L Holl
- Center for Healthcare Delivery Science and Innovation, University of Chicago, Chicago, Illinois, USA
| | - Bocar Baya
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Djeneba Dabitao
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Dramane Diallo
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Bassirou Diarra
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Amadou Kone
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Yeya Dit Sadio Sarro
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Moumine Sanogo
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Antieme Cg Togo
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Robert L Murphy
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois, USA
| | - Souleymane Diallo
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Nadie Coulibaly
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Fatoumata Camara
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Seydou Samake
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Mahamadou Diakite
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Seydou Doumbia
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Mamoudou Maiga
- University Clinical Research Center (UCRC) Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali; Biomedical Engineering Department, Northwestern University, Evanston, Illinois, USA.
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Liu Y, Huang L, Hu H, Cai M, Liang X, Li X, Zhang Z, Xie Y, Xiao C, Chen S, Chen D, Yong T, Pan H, Gao X, Wu Q. Whole-genome assembly of Ganoderma leucocontextum (Ganodermataceae, Fungi) discovered from the Tibetan Plateau of China. G3-GENES GENOMES GENETICS 2021; 11:6377781. [PMID: 34586388 PMCID: PMC8664445 DOI: 10.1093/g3journal/jkab337] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/14/2021] [Indexed: 12/24/2022]
Abstract
Ganoderma leucocontextum, a newly discovered species of Ganodermataceae in China, has diverse pharmacological activities. G. leucocontextum was widely cultivated in southwest China, but the systematic genetic study has been impeded by the lack of a reference genome. Herein, we present the first whole-genome assembly of G. leucocontextum based on the Illumina and Nanopore platform from high-quality DNA extracted from a monokaryon strain (DH-8). The generated genome was 50.05 Mb in size with a N50 scaffold size of 3.06 Mb, 78,206 coding sequences and 13,390 putative genes. Genome completeness was assessed using the Benchmarking Universal Single-Copy Orthologs (BUSCO) tool, which identified 96.55% of the 280 Fungi BUSCO genes. Furthermore, differences in functional genes of secondary metabolites (terpenoids) were analyzed between G. leucocontextum and G. lucidum. G. leucocontextum has more genes related to terpenoids synthesis compared to G. lucidum, which may be one of the reasons why they exhibit different biological activities. This is the first genome assembly and annotation for G. leucocontextum, which would enrich the toolbox for biological and genetic studies in G. leucocontextum.
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Affiliation(s)
- Yuanchao Liu
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, China.,Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China.,Guangdong Yuewei Edible Mushroom Technology Co., Ltd., Guangzhou, 510663, China
| | - Longhua Huang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Huiping Hu
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Manjun Cai
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Xiaowei Liang
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Xiangmin Li
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Zhi Zhang
- Guangdong Yuewei Edible Mushroom Technology Co., Ltd., Guangzhou, 510663, China
| | - Yizhen Xie
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China.,Guangdong Yuewei Edible Mushroom Technology Co., Ltd., Guangzhou, 510663, China
| | - Chun Xiao
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Shaodan Chen
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Diling Chen
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Tianqiao Yong
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Honghui Pan
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Xiong Gao
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
| | - Qingping Wu
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, China.,Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China
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Asare P, Asante-Poku A, Osei-Wusu S, Otchere ID, Yeboah-Manu D. The Relevance of Genomic Epidemiology for Control of Tuberculosis in West Africa. Front Public Health 2021; 9:706651. [PMID: 34368069 PMCID: PMC8342769 DOI: 10.3389/fpubh.2021.706651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 06/29/2021] [Indexed: 12/30/2022] Open
Abstract
Tuberculosis (TB), an airborne infectious disease caused by Mycobacterium tuberculosis complex (MTBC), remains a global health problem. West Africa has a unique epidemiology of TB that is characterized by medium- to high-prevalence. Moreover, the geographical restriction of M. africanum to the sub-region makes West Africa have an extra burden to deal with a two-in-one pathogen. The region is also burdened with low case detection, late reporting, poor treatment adherence leading to development of drug resistance and relapse. Sporadic studies conducted within the subregion report higher burden of drug resistant TB (DRTB) than previously thought. The need for more sensitive and robust tools for routine surveillance as well as to understand the mechanisms of DRTB and transmission dynamics for the design of effective control tools, cannot be overemphasized. The advancement in molecular biology tools including traditional fingerprinting and next generation sequencing (NGS) technologies offer reliable tools for genomic epidemiology. Genomic epidemiology provides in-depth insight of the nature of pathogens, circulating strains and their spread as well as prompt detection of the emergence of new strains. It also offers the opportunity to monitor treatment and evaluate interventions. Furthermore, genomic epidemiology can be used to understand potential emergence and spread of drug resistant strains and resistance mechanisms allowing the design of simple but rapid tools. In this review, we will describe the local epidemiology of MTBC, highlight past and current investigations toward understanding their biology and spread as well as discuss the relevance of genomic epidemiology studies to TB control in West Africa.
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Affiliation(s)
- Prince Asare
- College of Health Sciences, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Adwoa Asante-Poku
- College of Health Sciences, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Stephen Osei-Wusu
- College of Health Sciences, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Isaac Darko Otchere
- College of Health Sciences, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
| | - Dorothy Yeboah-Manu
- College of Health Sciences, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana
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Cheng B, Behr MA, Howden BP, Cohen T, Lee RS. Reporting practices for genomic epidemiology of tuberculosis: a systematic review of the literature using STROME-ID guidelines as a benchmark. THE LANCET. MICROBE 2021; 2:e115-e129. [PMID: 33842904 PMCID: PMC8034592 DOI: 10.1016/s2666-5247(20)30201-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Pathogen genomics have become increasingly important in infectious disease epidemiology and public health. The Strengthening the Reporting of Molecular Epidemiology for Infectious Diseases (STROME-ID) guidelines were developed to outline a minimum set of criteria that should be reported in genomic epidemiology studies to facilitate assessment of study quality. We evaluate such reporting practices, using tuberculosis as an example. METHODS For this systematic review, we initially searched MEDLINE, Embase Classic, and Embase on May 3, 2017, using the search terms "tuberculosis" and "genom* sequencing". We updated this initial search on April 23, 2019, and also included a search of bioRxiv at this time. We included studies in English, French, or Spanish that recruited patients with microbiologically confirmed tuberculosis and used whole genome sequencing for typing of strains. Non-human studies, conference abstracts, and literature reviews were excluded. For each included study, the number and proportion of fulfilled STROME-ID criteria were recorded by two reviewers. A comparison of the mean proportion of fulfilled STROME-ID criteria before and after publication of the STROME-ID guidelines (in 2014) was done using a two-tailed t test. Quasi-Poisson regression and tobit regression were used to examine associations between study characteristics and the number and proportion of fulfilled STROME-ID criteria. This study was registered with PROSPERO, CRD42017064395. FINDINGS 976 titles and abstracts were identified by our primary search, with an additional 16 studies identified in bioRxiv. 114 full texts (published between 2009 and 2019) were eligible for inclusion. The mean proportion of STROME-ID criteria fulfilled was 50% (SD 12; range 16-75). The proportion of criteria fulfilled was similar before and after STROME-ID publication (51% [SD 11] vs 46% [14], p=0·26). The number of criteria reported (among those applicable to all studies) was not associated with impact factor, h-index, country of affiliation of senior author, or sample size of isolates. Similarly, the proportion of criteria fulfilled was not associated with these characteristics, with the exception of a sample size of isolates of 277 or more (the highest quartile). In terms of reproducibility, 100 (88%) studies reported which bioinformatic tools were used, but only 33 (33%) reported corresponding version numbers. Sequencing data were available for 86 (75%) studies. INTERPRETATION The reporting of STROME-ID criteria in genomic epidemiology studies of tuberculosis between 2009 and 2019 was low, with implications for assessment of study quality. The considerable proportion of studies without bioinformatics version numbers or sequencing data available highlights a key concern for reproducibility.
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Affiliation(s)
- Brianna Cheng
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada
| | - Marcel A Behr
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada
| | - Benjamin P Howden
- The Microbiological Diagnostic Unit Public Health Laboratory, Department of Microbiology and Immunology, The University of Melbourne at The Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | | | - Robyn S Lee
- Epidemiology Division, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
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Characterization of Mycobacterium tuberculosis var. africanum isolated from a patient with pulmonary tuberculosis in Brazil. INFECTION GENETICS AND EVOLUTION 2020; 85:104550. [PMID: 32920193 DOI: 10.1016/j.meegid.2020.104550] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 08/01/2020] [Accepted: 09/04/2020] [Indexed: 11/22/2022]
Abstract
Human tuberculosis (TB) is caused by members of the Mycobacterium tuberculosis complex (MTBC), including Mycobacterium tuberculosis var. tuberculosis (MTB) and Mycobacterium tuberculosis var. africanum (MAF). While MTB is isolated worldwide, MAF is almost completely restricted to the African continent, and despite the historical proximity between Brazil and Africa during the slave trade, no case of TB being caused by MAF has been reported in Brazil to date. We hereby describe the first case of TB caused by MAF in Brazil comparing its genome against the published ones. A female patient who had never visited Africa presented with clinical symptoms typical of pulmonary TB. Based on 16S rRNA gene sequencing, the cultured isolate was identified as belonging to MTBC and partial sequence of the hsp65 gene was identical to that of MAF. This was confirmed by genotyping based on detection of Single Nucleotide Polymorphism (SNP), Region of Difference (RD) and spoligotyping. The isolate presented the Shared International Typing (SIT) 181. In the whole-genome comparison against MAF genomes available on published EMBL-EBI European Nucleotide Archive (ENA), the Brazilian genome (MAFBRA00707) was identified as belonging to Lineage 6 and clustered with isolates from The Gambia. This is the first report of the isolation of MAF from a patient from Brazil, without evidence of having any contact with an African index case.
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Baya B, Diarra B, Diabate S, Kone B, Goita D, Sarro YDS, Cohen K, Holl JL, Achenbach CJ, Tolofoudie M, Togo ACG, Sanogo M, Kone A, Kodio O, Dabitao D, Coulibaly N, Siddiqui S, Diop S, Bishai W, Dao S, Doumbia S, Murphy RL, Diallo S, Maiga M. Association of Mycobacterium africanum Infection with Slower Disease Progression Compared with Mycobacterium tuberculosis in Malian Patients with Tuberculosis. Am J Trop Med Hyg 2020; 102:36-41. [PMID: 31733052 PMCID: PMC6947796 DOI: 10.4269/ajtmh.19-0264] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Mycobacterium africanum (MAF) is known to endemically cause up to 40–50% of all pulmonary TB in West Africa. The aim of this study was to compare MAF with Mycobacterium tuberculosis (MTB) with regard to time from symptom onset to TB diagnosis, and clinical and radiological characteristics. A cross-sectional study was conducted in Bamako, Mali, between August 2014 and July 2016. Seventy-seven newly diagnosed pulmonary TB patients who were naive to treatment were enrolled at Mali’s University Clinical Research Center. Sputum cultures were performed to confirm the diagnosis and spoligotyping to identify the mycobacterial strain. Univariate and multivariate analyses were used to identify factors associated with disease progression. Overall, the frequency of female patients was 25% in MAF infection and only 10.0% in MTB infection (OR = 2.9), and MAF was more represented in patients aged ≥ 30 years (57.1% versus 36.7% [OR = 2.3]). More MAF- than MTB-infected patients had a history of a prior TB contact (32.1% versus 14.3% [OR = 2.8]). The mean duration between cough onset and TB diagnosis was 111 days (∼3.7 months) for MAF and 72 days (∼2.4 months) for MTB (P = 0.007). In a multivariate regression, weight loss (body mass index [BMI] < 18.5 kg/m2) and cough duration (> 4 months) were strongly associated with MAF infection (OR = 5.20 [1.49–18.26], P = 0.010, and 4.74 [1.2–18.58], P = 0.02), respectively. Our data show that MAF infection was significantly associated with lower BMI and a longer time between symptom onset and TB diagnosis than MTB. This supports the concept that MAF infection may have slower disease progression and less severe cough symptoms than MTB.
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Affiliation(s)
- Bocar Baya
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Bassirou Diarra
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Seydou Diabate
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Bourahima Kone
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Drissa Goita
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Yeya Dit Sadio Sarro
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Keira Cohen
- Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | | | - Mohamed Tolofoudie
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Antieme Combo Georges Togo
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Moumine Sanogo
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Amadou Kone
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Ousmane Kodio
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Djeneba Dabitao
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Nadie Coulibaly
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Sophia Siddiqui
- National Institutes of Allergic and Infectious Diseases (NIAID), Rockville, Maryland
| | - Samba Diop
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - William Bishai
- Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Sounkalo Dao
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Seydou Doumbia
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | | | - Souleymane Diallo
- University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Mamoudou Maiga
- Northwestern University, Chicago, Illinois.,University Clinical Research Center (UCRC)-SEREFO Laboratory-University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
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9
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Ofori-Anyinam B, Riley AJ, Jobarteh T, Gitteh E, Sarr B, Faal-Jawara TI, Rigouts L, Senghore M, Kehinde A, Onyejepu N, Antonio M, de Jong BC, Gehre F, Meehan CJ. Comparative genomics shows differences in the electron transport and carbon metabolic pathways of Mycobacterium africanum relative to Mycobacterium tuberculosis and suggests an adaptation to low oxygen tension. Tuberculosis (Edinb) 2020; 120:101899. [PMID: 32090860 PMCID: PMC7049902 DOI: 10.1016/j.tube.2020.101899] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/31/2019] [Accepted: 01/05/2020] [Indexed: 12/21/2022]
Abstract
The geographically restricted Mycobacterium africanum lineages (MAF) are primarily found in West Africa, where they account for a significant proportion of tuberculosis. Despite this phenomenon, little is known about the co-evolution of these ancient lineages with West Africans. MAF and M. tuberculosis sensu stricto lineages (MTB) differ in their clinical, in vitro and in vivo characteristics for reasons not fully understood. Therefore, we compared genomes of 289 MAF and 205 MTB clinical isolates from the 6 main human-adapted M. tuberculosis complex lineages, for mutations in their Electron Transport Chain and Central Carbon Metabolic pathway in order to explain these metabolic differences. Furthermore, we determined, in silico, whether each mutation could affect the function of genes encoding enzymes in these pathways. We found more mutations with the potential to affect enzymes in these pathways in MAF lineages compared to MTB lineages. We also found that similar mutations occurred in these pathways between MAF and some MTB lineages. Generally, our findings show further differences between MAF and MTB lineages that may have contributed to the MAF clinical and growth phenotype and indicate potential adaptation of MAF lineages to a distinct ecological niche, which we suggest includes areas characterized by low oxygen tension.
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Affiliation(s)
- Boatema Ofori-Anyinam
- Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp, Belgium; Vaccines and Immunity Theme, Medical Research Council Unit, Banjul, Gambia; Center for Global Health Security and Diplomacy, Ottawa, Canada
| | - Abi Janet Riley
- Vaccines and Immunity Theme, Medical Research Council Unit, Banjul, Gambia
| | - Tijan Jobarteh
- Vaccines and Immunity Theme, Medical Research Council Unit, Banjul, Gambia
| | - Ensa Gitteh
- Vaccines and Immunity Theme, Medical Research Council Unit, Banjul, Gambia
| | - Binta Sarr
- Vaccines and Immunity Theme, Medical Research Council Unit, Banjul, Gambia
| | | | - Leen Rigouts
- Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp, Belgium; Department of Biomedical Sciences, Antwerp University, Antwerp, Belgium
| | - Madikay Senghore
- Vaccines and Immunity Theme, Medical Research Council Unit, Banjul, Gambia
| | - Aderemi Kehinde
- Department of Medical Microbiology & Parasitology, University College Hospital, Ibadan, Nigeria; Department of Medical Microbiology & Parasitology, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Nneka Onyejepu
- Center for Tuberculosis Research, Nigeria Institute of Medical Research, Lagos, Nigeria
| | - Martin Antonio
- Vaccines and Immunity Theme, Medical Research Council Unit, Banjul, Gambia; Division of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom; Medical School, University of Warwick, Coventry, United Kingdom
| | - Bouke C de Jong
- Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp, Belgium
| | - Florian Gehre
- Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp, Belgium; Vaccines and Immunity Theme, Medical Research Council Unit, Banjul, Gambia; Bernhard-Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Conor J Meehan
- Mycobacteriology Unit, Institute of Tropical Medicine, Antwerp, Belgium; School of Chemistry and Biosciences, University of Bradford, Bradford, United Kingdom.
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10
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Adesokan HK, Akinseye VO, Streicher EM, Van Helden P, Warren RM, Cadmus SI. Reverse zoonotic tuberculosis transmission from an emerging Uganda I strain between pastoralists and cattle in South-Eastern Nigeria. BMC Vet Res 2019; 15:437. [PMID: 31801536 PMCID: PMC6894115 DOI: 10.1186/s12917-019-2185-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 11/22/2019] [Indexed: 11/13/2022] Open
Abstract
Background Tuberculosis remains a major public health challenge globally with increasing risks for inter-transmission between pastoralists and cattle in Nigeria. This study was aimed at using molecular tools to establish zoonotic transmission of tuberculosis between pastoralists and their cattle in Ebonyi State, Nigeria. Sputum (n = 149) and milk (n = 144) samples from pastoralists and cattle, respectively were screened on the assumption of subclinical infections considering unguarded human-livestock interactions. Isolates obtained were analysed using deletion typing, spoligotyping and 24-Mycobacterial Interspersed Repetitive Unit-Variable Number Tandem Repeats (MIRU-VNTR). Results Fifty-four MTC were confirmed by deletion typing and were differentiated accordingly (M. tuberculosis: pastoralists =42, cattle = 2; M. bovis: pastoralists =1; M. africanum: pastoralists =9). Spoligotyping indicated 59.2% Uganda I/SIT46 (pastoralists =28; cattle = 1), 16.3% Latin American Mediterranean/SIT61 (pastoralists =8), 2.0% T/SIT53 (pastoralists =1) strains of M. tuberculosis and new strains of M. bovis and M. africanum. The 24-MIRU-VNTR of selected predominant cluster isolates shared by cattle and pastoralists (Uganda I/SIT46: pastoralists =9; cattle = 1) showed the same number of copies at each of the repetitive loci. Conclusions Mycobacterium bovis was confirmed in humans and a reverse zoonotic tuberculosis transmission from an emerging Uganda I M. tuberculosis strain between pastoralists and cattle in Nigeria evidenced by MIRU-VNTR. Using molecular tools will help mitigate disease burden through informed epidemiological insights.
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Affiliation(s)
- Hezekiah Kehinde Adesokan
- Department of Veterinary Public Health and Preventive Medicine, University of Ibadan, Ibadan, Nigeria.
| | | | - Elizabeth Maria Streicher
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research/SAMRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Paul Van Helden
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research/SAMRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Rob Mark Warren
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research/SAMRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Simeon Idowu Cadmus
- Department of Veterinary Public Health and Preventive Medicine, University of Ibadan, Ibadan, Nigeria. .,Center for Control and Prevention of Zoonoses, University of Ibadan, Ibadan, Nigeria.
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11
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Cá B, Fonseca KL, Sousa J, Maceiras AR, Machado D, Sanca L, Rabna P, Rodrigues PNS, Viveiros M, Saraiva M. Experimental Evidence for Limited in vivo Virulence of Mycobacterium africanum. Front Microbiol 2019; 10:2102. [PMID: 31552007 PMCID: PMC6746983 DOI: 10.3389/fmicb.2019.02102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 08/26/2019] [Indexed: 02/03/2023] Open
Abstract
Tuberculosis remains a public health problem and a main cause of death to humans. Both Mycobacterium tuberculosis and Mycobacterium africanum cause tuberculosis. In contrast to M. tuberculosis, which is geographically spread, M. africanum is restricted to West Africa. Differences have also been found in the growth rate and type of disease caused by M. africanum, globally suggesting an attenuation of this bacteria. In this study, we used the mouse model of infection to follow the dynamics of M. africanum infection in terms of bacterial burdens and tissue pathology, as well as the immune response triggered. Our findings support a lower virulence of M. africanum as compared to M. tuberculosis, including in mice lacking IFN-γ, a major protective cytokine in tuberculosis. Furthermore, the lung immune response triggered by M. africanum infection in wild-type animals was characterized by a discrete influx of leukocytes and a modest transcriptional upregulation of inflammatory mediators. Our findings contribute to elucidate the pathogenesis of M. africanum, supporting the hypothesis that this is an attenuated member of the tuberculosis-causing bacteria. Understanding the biology of M. africanum and how it interacts with the host to establish infection will have implications for our knowledge of TB and for the development of novel and better tools to control this devastating disease.
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Affiliation(s)
- Baltazar Cá
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,Programa de Pós-Graduação Ciência para o Desenvolvimento, Instituto Gulbenkian de Ciência, Oeiras, Portugal.,Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.,Instituto Nacional de Saúde Pública/Projeto de Saúde de Bandim, Bissau, Guinea-Bissau
| | - Kaori L Fonseca
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,Programa de Pós-Graduação Ciência para o Desenvolvimento, Instituto Gulbenkian de Ciência, Oeiras, Portugal.,Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Jeremy Sousa
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Ana Raquel Maceiras
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Diana Machado
- Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Lilica Sanca
- Instituto Nacional de Saúde Pública/Projeto de Saúde de Bandim, Bissau, Guinea-Bissau
| | - Paulo Rabna
- Instituto Nacional de Saúde Pública/Projeto de Saúde de Bandim, Bissau, Guinea-Bissau
| | - Pedro N S Rodrigues
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.,Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Miguel Viveiros
- Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Margarida Saraiva
- i3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.,Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
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12
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Feliciano CS, Menon LJB, Anselmo LMP, Dippenaar A, Warren RM, Silva WA, Bollela VR. Xpert MTB/RIF performance to diagnose tuberculosis and rifampicin resistance in a reference centre in southern Brazil. ERJ Open Res 2019; 5:00043-2019. [PMID: 31404338 PMCID: PMC6680070 DOI: 10.1183/23120541.00043-2019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 06/07/2019] [Indexed: 12/27/2022] Open
Abstract
Effective treatment of tuberculosis (TB) remains a serious public health problem in many countries, including Brazil, especially when considering drug-resistant disease. Xpert MTB/RIF has been implemented in many countries to reduce the time to TB diagnosis and to rapidly detect rifampicin resistance. The study aimed to describe and evaluate Xpert MTB/RIF performance in diagnosing pulmonary TB and rifampicin resistance in a tertiary healthcare facility in Brazil. A cross-sectional study was performed, which included all isolates of confirmed pulmonary TB patients from 2015 to 2018. Both Xpert MTB/RIF and GenoType MTBDRplus assays were performed to detect rifampicin and isoniazid resistance. In addition, isolates with detected resistance to rifampicin and/or isoniazid were analysed by phenotypic testing using MGIT-960 SIRE kit and whole-genome sequencing (WGS) using Illumina MiSeq Sequencing System. 2148 respiratory specimens tested with Xpert MTB/RIF were included: n=1556 sputum, n=348 bronchoalveolar lavage and n=244 gastric washing. The overall Xpert MTB/RIF sensitivity in sputum was 94% and the overall specificity was 98%. The negative predictive value in sputum of all the patients was 99% with a positive predictive value of 89%. The concordance between Xpert MTB/RIF and phenotypic susceptibility test was 94.1%, while its concordance with WGS was 78.9%. Xpert MTB/RIF is a rapid and accurate diagnostic strategy for pulmonary TB, which can contribute to improvement in TB control. However, detection of rifampicin resistance might be associated with false-positive results.
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Affiliation(s)
- Cinara Silva Feliciano
- Dept of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo (FMRP-USP), São Paulo, Brazil
| | - Lucas José Bazzo Menon
- Dept of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo (FMRP-USP), São Paulo, Brazil
| | - Livia Maria Pala Anselmo
- Dept of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo (FMRP-USP), São Paulo, Brazil
| | - Anzaan Dippenaar
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, SAMRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Robin Mark Warren
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, SAMRC Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Wilson Araújo Silva
- Center for Medical Genomics, Clinics Hospital at Ribeirão Preto Medical School, FMRP-USP, São Paulo, Brazil.,Dept of Genetics, Ribeirão Preto Medical School, FMRP-USP, São Paulo, Brazil
| | - Valdes Roberto Bollela
- Dept of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo (FMRP-USP), São Paulo, Brazil
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13
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Fieweger RA, Wilburn KM, VanderVen BC. Comparing the Metabolic Capabilities of Bacteria in the Mycobacterium tuberculosis Complex. Microorganisms 2019; 7:E177. [PMID: 31216777 PMCID: PMC6617402 DOI: 10.3390/microorganisms7060177] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/10/2019] [Accepted: 06/15/2019] [Indexed: 02/06/2023] Open
Abstract
Pathogenic mycobacteria are known for their ability to maintain persistent infections in various mammals. The canonical pathogen in this genus is Mycobacterium tuberculosis and this bacterium is particularly successful at surviving and replicating within macrophages. Here, we will highlight the metabolic processes that M. tuberculosis employs during infection in macrophages and compare these findings with what is understood for other pathogens in the M. tuberculosis complex.
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Affiliation(s)
- Rachael A Fieweger
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14850, USA.
| | - Kaley M Wilburn
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14850, USA.
| | - Brian C VanderVen
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14850, USA.
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14
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An integrated whole genome analysis of Mycobacterium tuberculosis reveals insights into relationship between its genome, transcriptome and methylome. Sci Rep 2019; 9:5204. [PMID: 30914757 PMCID: PMC6435705 DOI: 10.1038/s41598-019-41692-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 03/14/2019] [Indexed: 01/01/2023] Open
Abstract
Human tuberculosis disease (TB), caused by Mycobacterium tuberculosis (Mtb), is a complex disease, with a spectrum of outcomes. Genomic, transcriptomic and methylation studies have revealed differences between Mtb lineages, likely to impact on transmission, virulence and drug resistance. However, so far no studies have integrated sequence-based genomic, transcriptomic and methylation characterisation across a common set of samples, which is critical to understand how DNA sequence and methylation affect RNA expression and, ultimately, Mtb pathogenesis. Here we perform such an integrated analysis across 22 M. tuberculosis clinical isolates, representing ancient (lineage 1) and modern (lineages 2 and 4) strains. The results confirm the presence of lineage-specific differential gene expression, linked to specific SNP-based expression quantitative trait loci: with 10 eQTLs involving SNPs in promoter regions or transcriptional start sites; and 12 involving potential functional impairment of transcriptional regulators. Methylation status was also found to have a role in transcription, with evidence of differential expression in 50 genes across lineage 4 samples. Lack of methylation was associated with three novel variants in mamA, likely to cause loss of function of this enzyme. Overall, our work shows the relationship of DNA sequence and methylation to RNA expression, and differences between ancient and modern lineages. Further studies are needed to verify the functional consequences of the identified mechanisms of gene expression regulation.
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15
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Ramaiah A, Nayak S, Rakshit S, Manson AL, Abeel T, Shanmugam S, Sahoo PN, John AJUK, Sundaramurthi JC, Narayanan S, D'Souza G, von Hoegen P, Ottenhoff THM, Swaminathan S, Earl AM, Vyakarnam A. Evidence for Highly Variable, Region-Specific Patterns of T-Cell Epitope Mutations Accumulating in Mycobacterium tuberculosis Strains. Front Immunol 2019; 10:195. [PMID: 30814998 PMCID: PMC6381025 DOI: 10.3389/fimmu.2019.00195] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 01/23/2019] [Indexed: 01/26/2023] Open
Abstract
Vaccines that confer protection through induction of adaptive T-cell immunity rely on understanding T-cell epitope (TCE) evolution induced by immune escape. This is poorly understood in tuberculosis (TB), an ancient, chronic disease, where CD4 T-cell immunity is of recognized importance. We probed 905 functionally validated, curated human CD4 T cell epitopes in 79 Mycobacterium tuberculosis (Mtb) whole genomes from India. This screen resulted in identifying 64 mutated epitopes in these strains initially using a computational pipeline and subsequently verified by single nucleotide polymorphism (SNP) analysis. SNP based phylogeny revealed the 79 Mtb strains to cluster to East African Indian (EAI), Central Asian Strain (CAS), and Beijing (BEI) lineages. Eighty-nine percent of the mutated T-cell epitopes (mTCEs) identified in the 79 Mtb strains from India has not previously been reported. These mTCEs were encoded by genes with high nucleotide diversity scores including seven mTCEs encoded by six antigens in the top 10% of rapidly divergent Mtb genes encoded by these strains. Using a T cell functional assay readout, we demonstrate 62% of mTCEs tested to significantly alter CD4 T-cell IFNγ and/or IL2 secretion with associated changes in predicted HLA-DR binding affinity: the gain of function mutations displayed higher predicted HLA-DR binding affinity and conversely mutations resulting in loss of function displayed lower predicted HLA-DR binding affinity. Most mutated antigens belonged to the cell wall/cell processes, and, intermediary metabolism and respiration families though all known Mtb proteins encoded mutations. Analysis of the mTCEs in an SNP database of 5,310 global Mtb strains identified 82% mTCEs to be significantly more prevalent in Mtb strains isolated from India, including 36 mTCEs identified exclusively in strains from India. These epitopes had a significantly higher predicted binding affinity to HLA-DR alleles that were highly prevalent in India compared to HLA-DR alleles rare in India, highlighting HLA-DR maybe an important driver of these mutations. This first evidence of region-specific TCE mutations potentially employed by Mtb to escape host immunity has important implications for TB vaccine design.
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Affiliation(s)
- Arunachalam Ramaiah
- Centre for Infectious Disease Research, Indian Institute of Science, Bangalore, India
| | - Soumya Nayak
- Centre for Infectious Disease Research, Indian Institute of Science, Bangalore, India
| | - Srabanti Rakshit
- Centre for Infectious Disease Research, Indian Institute of Science, Bangalore, India
| | - Abigail L Manson
- Broad Institute of MIT and Harvard, Cambridge, MA, United States
| | - Thomas Abeel
- Broad Institute of MIT and Harvard, Cambridge, MA, United States
| | | | - Pravat Nalini Sahoo
- Centre for Infectious Disease Research, Indian Institute of Science, Bangalore, India
| | | | | | - Sujatha Narayanan
- National Institute for Research in Tuberculosis (ICMR), Chennai, India
| | - George D'Souza
- Department of Pulmonary Medicine, St. John's Research Institute, Bangalore, India
| | | | - Tom H M Ottenhoff
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands
| | | | - Ashlee M Earl
- Broad Institute of MIT and Harvard, Cambridge, MA, United States
| | - Annapurna Vyakarnam
- Centre for Infectious Disease Research, Indian Institute of Science, Bangalore, India.,Department of Infectious Diseases, Faculty of Life Sciences & Medicine, School of Immunology and Microbial Sciences, King's College London, London, United Kingdom
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16
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Kone A, Diarra B, Cohen K, Diabate S, Kone B, Diakite MT, Diarra H, Sanogo M, Togo ACG, Sarro YDS, Baya B, Coulibaly N, Kodio O, Achenbach CJ, Murphy RL, Holl JL, Siddiqui S, Doumbia S, Bishai WR, Diallo S, Maiga M. Differential HLA allele frequency in Mycobacterium africanum vs Mycobacterium tuberculosis in Mali. HLA 2019; 93:24-31. [PMID: 30516034 DOI: 10.1111/tan.13448] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 10/22/2018] [Accepted: 11/28/2018] [Indexed: 11/28/2022]
Abstract
Tuberculosis (TB) is caused by Mycobacterium tuberculosis complex (MTBC), however, the distribution and frequency of MTBC lineages and sublineages vary in different parts of the globe. Mycobacterium africanum, a member of MTBC is responsible for a large percentage of TB cases in West Africa, however, it is rarely identified outside of this part of the World. Whether or not differential HLA polymorphism (an important host factor) is contributing to the geographic restriction of M. africanum to West Africa is unknown. Here, we conducted a cohort study in Mali of newly diagnosed individuals with active pulmonary TB and normal healthy controls. The MTBC isolates were spoligotyped to determine the TB study groups (M. tuberculosis sensu stricto LAM10 and M. africanum), and HLA typing was performed on peripheral blood. Unlike previous reports on other populations, we found that HLA class-I alleles were significantly associated with active TB disease in this population. HLA-B alleles (B*07:02, B*08:01, B*14:02, B*15:03, B*15:10, B*18:01, B*42:01, B*42:02, B*51:01 and B*81:01) were significantly associated with M. africanum (40%-45%) and M. tuberculosis (75%) compared with healthy controls. Many HLA-A alleles (A*02:05, A*34:02, A*66:01 and A*68:02) were also associated with both TB groups (65%-70%). However, many class II HLA-DR variants were found to be associated with M. tuberculosis but not M. africanum with the exception of the DRB1*03:01, which was associated with both groups. The differential HLA distribution observed in this study might be at least partially responsible for the geographical restriction of M. africanum infections to West Africa.
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Affiliation(s)
- Amadou Kone
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Bassirou Diarra
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Keira Cohen
- Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Seydou Diabate
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Bourahima Kone
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Mahamane T Diakite
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Hawa Diarra
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Moumine Sanogo
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Antieme C G Togo
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Yeya Dit Sadio Sarro
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Bocar Baya
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Nadie Coulibaly
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Ousmane Kodio
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | | | | | | | - Sophia Siddiqui
- National Institute of Allergic and Infectious Diseases, Rockville, Maryland
| | - Seydou Doumbia
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - William R Bishai
- Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Souleymane Diallo
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Mamoudou Maiga
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali.,Northwestern University, Chicago, Illinois
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17
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Diarra B, Kone M, Togo ACG, Sarro YDS, Cisse AB, Somboro A, Degoga B, Tolofoudie M, Kone B, Sanogo M, Baya B, Kodio O, Maiga M, Belson M, Orsega S, Krit M, Dao S, Maiga II, Murphy RL, Rigouts L, Doumbia S, Diallo S, de Jong BC. Mycobacterium africanum (Lineage 6) shows slower sputum smear conversion on tuberculosis treatment than Mycobacterium tuberculosis (Lineage 4) in Bamako, Mali. PLoS One 2018; 13:e0208603. [PMID: 30540823 PMCID: PMC6291124 DOI: 10.1371/journal.pone.0208603] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 11/20/2018] [Indexed: 11/19/2022] Open
Abstract
Objective Ancestral M. tuberculosis complex lineages such as M. africanum are underrepresented among retreatment patients and those with drug resistance. To test the hypothesis that they respond faster to TB treatment, we determined the rate of smear conversion of new pulmonary tuberculosis patients in Bamako, Mali by the main MTBc lineages. Methods Between 2015 and 2017, we conducted a prospective cohort study of new smear positive pulmonary tuberculosis patients in Bamako. Confirmed MTBc isolates underwent genotyping by spoligotyping for lineage classification. Patients were followed at 1 month (M), 2M and 5M to measure smear conversion in auramine (AR) and Fluorescein DiAcetate (FDA) vital stain microscopy. Result All the first six human MTBc lineages were represented in the population, plus M. bovis in 0.8% of the patients. The most widely represented lineage was the modern Euro-American lineage (L) 4, 57%, predominantly the T family, followed by L6 (M. africanum type 2) in 22.9%. Ancestral lineages 1, 5, 6 and M. bovis combined amounted to 28.8%. Excluding 25 patients with rifampicin resistance, smear conversion, both by AR and FDA, occurred later in L6 compared to L4 (HR 0.80 (95% CI 0.66–0.97) for AR, and HR 0.81 (95%CI 0.68–0.97) for FDA). In addition we found that HIV negative status, higher BMI at day 0, and patients with smear grade at baseline ≤ 1+ were associated with earlier smear conversion. Conclusion The six major human lineages of the MTBc all circulate in Bamako. Counter to our hypothesis, we found that patients diseased with modern M. tuberculosis complex L4 respond faster to TB treatment than those with M. africanum L6.
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Affiliation(s)
- Bassirou Diarra
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
- Institute of Tropical Medicine, Department of Biomedical Sciences, Antwerp, Belgium
- Department of Biomedical Sciences, Antwerp University, Antwerp, Belgium
- * E-mail:
| | - Mahamadou Kone
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Antieme Combo Georges Togo
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Yeya dit Sadio Sarro
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Aissata Boubakar Cisse
- Laboratoire National de Référence des Mycobactéries (LNR), Institut National de Recherche en Santé publique (INRSP), Bamako, Mali
| | - Amadou Somboro
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Boureima Degoga
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Mohamed Tolofoudie
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Bourahima Kone
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Moumine Sanogo
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Bocar Baya
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Ousmane Kodio
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Mamoudou Maiga
- Global Health, Northwestern University, Chicago, IL, United States of America
| | - Michael Belson
- Collaborative Clinical Research Branch, Division of Clinical Research, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, United States of America
| | - Susan Orsega
- Collaborative Clinical Research Branch, Division of Clinical Research, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, United States of America
| | - Meryam Krit
- Institute of Tropical Medicine, Department of Biomedical Sciences, Antwerp, Belgium
| | - Sounkalo Dao
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Ibrahim Izétiegouma Maiga
- Laboratoire d’analyses Médicales et Hygiène Hospitalière du Centre Hospitalier Universitaire du Point-G, Bamako, Mali
| | - Robert L. Murphy
- Global Health, Northwestern University, Chicago, IL, United States of America
| | - Leen Rigouts
- Institute of Tropical Medicine, Department of Biomedical Sciences, Antwerp, Belgium
- Department of Biomedical Sciences, Antwerp University, Antwerp, Belgium
| | - Seydou Doumbia
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Souleymane Diallo
- University Clinical Research Center (UCRC)-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
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18
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Togo ACG, Kodio O, Diarra B, Sanogo M, Coulibaly G, Bane S, Diallo F, Somboro AM, Cisse AB, Baya B, Goita D, Diabate S, Kone B, Sarro YDS, Maiga M, Toloba Y, Belson M, Orsega S, Dao S, Murphy RL, Siddiqui S, Doumbia S, Diallo S. The most frequent Mycobacterium tuberculosis complex families in mali (2006-2016) based on spoligotyping. Int J Mycobacteriol 2018; 6:379-386. [PMID: 29171452 DOI: 10.4103/ijmy.ijmy_140_17] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND To identify strains of Mycobacterium tuberculosis complex (MTBc) circulating in Bamako region during the past 10 years. METHODS From 2006 to 2016, we conducted a cross-sectional study to identify with spoligotyping, clinical isolates from tuberculosis (TB)-infected patients at different stages of their treatments in Bamako, Mali. RESULTS Among the 904 suspected TB patients included in the study and thereafter tested in our BSL-3 laboratory, 492 (54.4%) had MTBc and therefore underwent spoligotyping. Overall, three subspecies, i.e., MTB T1 (31.9%) and MTB LAM10 (15.3%) from lineage 4 and M. africanum 2 (16.8%) from lineage 6 were the leading causes of TB in Bamako region during the past 10 years. Other spoligotypes such as MTB T3, MTB Haarlem 2, MTB EAI3, and MTB family 33 were also commonly seen from 2010 to 2016. CONCLUSION This study showed a high genetic diversity of strains isolated in Bamako region and highlights that M. tuberculosis T1 strain was the most prevalent. Furthermore, the data indicate an increasing proportion of primary drug resistance overtime in Bamako.
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Affiliation(s)
- Antieme Combo Georges Togo
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Ousmane Kodio
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Bassirou Diarra
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Moumine Sanogo
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Gagni Coulibaly
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Sidy Bane
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Fatimata Diallo
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Anou M Somboro
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Aissata B Cisse
- Laboratoire National de Référence des Mycobactéries (LNR), Institut National de Recherche en Santé Publique, Bamako, Mali
| | - Bocar Baya
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Drissa Goita
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Seydou Diabate
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Bourahima Kone
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Yeya Dit Sadio Sarro
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Mamoudou Maiga
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali; Center for Global Health, Northwestern University, Chicago, IL, USA
| | - Yacouba Toloba
- Service De Pneumo-phtisiologie Du Centre Hospitalier Universitaire Du Point-g, Bamako, Mali
| | - Michael Belson
- Division of Clinical Research, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, USA
| | - Susan Orsega
- Service De Pneumo-phtisiologie Du Centre Hospitalier Universitaire Du Point-g, Bamako, Mali
| | - Sounkalo Dao
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | | | - Sophia Siddiqui
- Division of Clinical Research, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, USA
| | - Seydou Doumbia
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
| | - Souleymane Diallo
- University Clinical Research Center-SEREFO-Laboratory, University of Sciences, Techniques and Technologies of Bamako, Bamako, Mali
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19
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Ates LS, Dippenaar A, Sayes F, Pawlik A, Bouchier C, Ma L, Warren RM, Sougakoff W, Majlessi L, van Heijst JWJ, Brossier F, Brosch R. Unexpected Genomic and Phenotypic Diversity of Mycobacterium africanum Lineage 5 Affects Drug Resistance, Protein Secretion, and Immunogenicity. Genome Biol Evol 2018; 10:1858-1874. [PMID: 30010947 PMCID: PMC6071665 DOI: 10.1093/gbe/evy145] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/10/2018] [Indexed: 01/19/2023] Open
Abstract
Mycobacterium africanum consists of Lineages L5 and L6 of the Mycobacterium tuberculosis complex (MTBC) and causes human tuberculosis in specific regions of Western Africa, but is generally not transmitted in other parts of the world. Since M. africanum is evolutionarily closely placed between the globally dispersed Mycobacterium tuberculosis and animal-adapted MTBC-members, these lineages provide valuable insight into M. tuberculosis evolution. Here, we have collected 15 M. africanum L5 strains isolated in France over 4 decades. Illumina sequencing and phylogenomic analysis revealed a previously underappreciated diversity within L5, which consists of distinct sublineages. L5 strains caused relatively high levels of extrapulmonary tuberculosis and included multi- and extensively drug-resistant isolates, especially in the newly defined sublineage L5.2. The specific L5 sublineages also exhibit distinct phenotypic characteristics related to in vitro growth, protein secretion and in vivo immunogenicity. In particular, we identified a PE_PGRS and PPE-MPTR secretion defect specific for sublineage L5.2, which was independent of PPE38. Furthermore, L5 isolates were able to efficiently secrete and induce immune responses against ESX-1 substrates contrary to previous predictions. These phenotypes of Type VII protein secretion and immunogenicity provide valuable information to better link genome sequences to phenotypic traits and thereby understand the evolution of the MTBC.
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Affiliation(s)
- Louis S Ates
- Department of Genomes and Genetics, Institut Pasteur, Unit for Integrated Mycobacterial Pathogenomics, CNRS UMR3525, Paris, France
- Department of Experimental Immunology, Amsterdam UMC, University of Amsterdam, Amsterdam Infection & Immunity Institute, Amsterdam, The Netherlands
| | - Anzaan Dippenaar
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Fadel Sayes
- Department of Genomes and Genetics, Institut Pasteur, Unit for Integrated Mycobacterial Pathogenomics, CNRS UMR3525, Paris, France
| | - Alexandre Pawlik
- Department of Genomes and Genetics, Institut Pasteur, Unit for Integrated Mycobacterial Pathogenomics, CNRS UMR3525, Paris, France
| | - Christiane Bouchier
- Department of Genomes and Genetics, Institut Pasteur, Genomics Platform, Paris, France
| | - Laurence Ma
- Department of Genomes and Genetics, Institut Pasteur, Genomics Platform, Paris, France
| | - Robin M Warren
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research; South African Medical Research Council Centre for Tuberculosis Research; Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Wladimir Sougakoff
- Sorbonne Universités, INSERM, Centre d'Immunologie et des Maladies Infectieuses, CIMI-Paris, Team 13 (Bacteriology), Paris, France
- Laboratoire de Bactériologie-Hygiène, Centre National de Référence des Mycobactéries (NRC MyRMA), Hôpitaux Universitaires Pitié-Salpêtrière – Charles Foix, Paris, France
| | - Laleh Majlessi
- Department of Genomes and Genetics, Institut Pasteur, Unit for Integrated Mycobacterial Pathogenomics, CNRS UMR3525, Paris, France
| | - Jeroen W J van Heijst
- Department of Experimental Immunology, Amsterdam UMC, University of Amsterdam, Amsterdam Infection & Immunity Institute, Amsterdam, The Netherlands
| | - Florence Brossier
- Department of Genomes and Genetics, Institut Pasteur, Unit for Integrated Mycobacterial Pathogenomics, CNRS UMR3525, Paris, France
- Sorbonne Universités, INSERM, Centre d'Immunologie et des Maladies Infectieuses, CIMI-Paris, Team 13 (Bacteriology), Paris, France
- Laboratoire de Bactériologie-Hygiène, Centre National de Référence des Mycobactéries (NRC MyRMA), Hôpitaux Universitaires Pitié-Salpêtrière – Charles Foix, Paris, France
| | - Roland Brosch
- Department of Genomes and Genetics, Institut Pasteur, Unit for Integrated Mycobacterial Pathogenomics, CNRS UMR3525, Paris, France
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20
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Chae H, Shin SJ. Importance of differential identification of Mycobacterium tuberculosis strains for understanding differences in their prevalence, treatment efficacy, and vaccine development. J Microbiol 2018; 56:300-311. [PMID: 29721826 DOI: 10.1007/s12275-018-8041-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 02/14/2018] [Accepted: 02/14/2018] [Indexed: 01/28/2023]
Abstract
Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb), remains a serious global health problem in the 21st century because of its high mortality. Mtb is an extremely successful human-adapted pathogen that displays a multifactorial ability to control the host immune response and to evade killing by drugs, resulting in the breakdown of BCG vaccine-conferred anti-TB immunity and development of multidrug-resistant (MDR) and extensively drug-resistant (XDR) Mtb. Although genetic components of the genomes of the Mtb complex strains are highly conserved, showing over 99% similarity to other bacterial genera, recently accumulated evidence suggests that the genetic diversity of the Mtb complex strains has implications for treatment outcomes, development of MDR/XDR Mtb, BCG vaccine efficacy, transmissibility, and epidemiological outbreaks. Thus, new insights into the pathophysiological features of the Mtb complex strains are required for development of novel vaccines and for control of MDR/XDR Mtb infection, eventually leading to refinement of treatment regimens and the health care system. Many studies have focused on the differential identification of Mtb complex strains belonging to different lineages because of differences in their virulence and geographical dominance. In this review, we discuss the impact of differing genetic characteristics among Mtb complex strains on vaccine efficacy, treatment outcome, development of MDR/XDR Mtb strains, and epidemiological outbreaks by focusing on the best-adapted human Mtb lineages. We further explore the rationale for differential identification of Mtb strains for more effective control of TB in clinical and laboratory settings by scrutinizing current diagnostic methods.
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Affiliation(s)
- Hansong Chae
- Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Sung Jae Shin
- Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
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21
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Accuracy of whole genome sequencing versus phenotypic (MGIT) and commercial molecular tests for detection of drug-resistant Mycobacterium tuberculosis isolated from patients in Brazil and Mozambique. Tuberculosis (Edinb) 2018; 110:59-67. [DOI: 10.1016/j.tube.2018.04.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 03/26/2018] [Accepted: 04/03/2018] [Indexed: 02/05/2023]
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22
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Phelan J, de Sessions PF, Tientcheu L, Perdigao J, Machado D, Hasan R, Hasan Z, Bergval IL, Anthony R, McNerney R, Antonio M, Portugal I, Viveiros M, Campino S, Hibberd ML, Clark TG. Methylation in Mycobacterium tuberculosis is lineage specific with associated mutations present globally. Sci Rep 2018; 8:160. [PMID: 29317751 PMCID: PMC5760664 DOI: 10.1038/s41598-017-18188-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 12/07/2017] [Indexed: 11/30/2022] Open
Abstract
DNA methylation is an epigenetic modification of the genome involved in regulating crucial cellular processes, including transcription and chromosome stability. Advances in PacBio sequencing technologies can be used to robustly reveal methylation sites. The methylome of the Mycobacterium tuberculosis complex is poorly understood but may be involved in virulence, hypoxic survival and the emergence of drug resistance. In the most extensive study to date, we characterise the methylome across the 4 major lineages of M. tuberculosis and 2 lineages of M. africanum, the leading causes of tuberculosis disease in humans. We reveal lineage-specific methylated motifs and strain-specific mutations that are abundant globally and likely to explain loss of function in the respective methyltransferases. Our work provides a set of sixteen new complete reference genomes for the Mycobacterium tuberculosis complex, including complete lineage 5 genomes. Insights into lineage-specific methylomes will further elucidate underlying biological mechanisms and other important phenotypes of the epi-genome.
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Affiliation(s)
- Jody Phelan
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | | | - Leopold Tientcheu
- Vaccines and Immunity Theme, Medical Research Council Unit, Fajara, The Gambia
| | - Joao Perdigao
- iMed.ULisboa - Research Institute for Medicines, Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - Diana Machado
- Unidade de Microbiologia Médica, Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Rumina Hasan
- Department of Pathology and Laboratory Medicine, The Aga Khan University, Karachi, Pakistan
| | - Zahra Hasan
- Department of Pathology and Laboratory Medicine, The Aga Khan University, Karachi, Pakistan
| | - Indra L Bergval
- Royal Tropical Institute, KIT Biomedical Research, Amsterdam, The Netherlands
| | - Richard Anthony
- Royal Tropical Institute, KIT Biomedical Research, Amsterdam, The Netherlands
| | - Ruth McNerney
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Lung Infection and Immunity Unit, UCT Lung Institute, University of Cape Town, Cape Town, South Africa
| | - Martin Antonio
- Vaccines and Immunity Theme, Medical Research Council Unit, Fajara, The Gambia
| | - Isabel Portugal
- iMed.ULisboa - Research Institute for Medicines, Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - Miguel Viveiros
- Unidade de Microbiologia Médica, Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Susana Campino
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Martin L Hibberd
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom.
- Genome Institute of Singapore, Biopolis, Singapore.
| | - Taane G Clark
- Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom.
- Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom.
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23
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Abstract
The tuberculosis agent Mycobacterium tuberculosis has undergone a long and selective evolution toward human infection and represents one of the most widely spread pathogens due to its efficient aerosol-mediated human-to-human transmission. With the availability of more and more genome sequences, the evolutionary trajectory of this obligate pathogen becomes visible, which provides us with new insights into the molecular events governing evolution of the bacterium and its ability to accumulate drug-resistance mutations. In this review, we summarize recent developments in mycobacterial research related to this matter that are important for a better understanding of the current situation and future trends and developments in the global epidemiology of tuberculosis, as well as for possible public health intervention possibilities.
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24
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Abstract
Tuberculosis (TB) remains the most deadly bacterial infectious disease worldwide. Its treatment and control are threatened by increasing numbers of multidrug-resistant (MDR) or nearly untreatable extensively drug-resistant (XDR) strains. New concepts are therefore urgently needed to understand the factors driving the TB epidemics and the spread of different strain populations, especially in association with drug resistance. Classical genotyping and, more recently, whole-genome sequencing (WGS) revealed that the world population of tubercle bacilli is more diverse than previously thought. Several major phylogenetic lineages can be distinguished, which are associated with their sympatric host population. Distinct clonal (sub)populations can even coexist within infected patients. WGS is now used as the ultimate approach for differentiating clinical isolates and for linking phenotypic to genomic variation from lineage to strain levels. Multiple lines of evidence indicate that the genetic diversity of TB strains translates into pathobiological consequences, and key molecular mechanisms probably involved in differential pathoadaptation of some main lineages have recently been identified. Evidence also accumulates on molecular mechanisms putatively fostering the emergence and rapid expansion of particular MDR and XDR strain groups in some world regions. However, further integrative studies will be needed for complete elucidation of the mechanisms that allow the pathogen to infect its host, acquire multidrug resistance, and transmit so efficiently. Such knowledge will be key for the development of the most effective new diagnostics, drugs, and vaccination strategies.
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25
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Yruela I, Contreras-Moreira B, Magalhães C, Osório NS, Gonzalo-Asensio J. Mycobacterium tuberculosis Complex Exhibits Lineage-Specific Variations Affecting Protein Ductility and Epitope Recognition. Genome Biol Evol 2017; 8:3751-3764. [PMID: 28062754 PMCID: PMC5521731 DOI: 10.1093/gbe/evw279] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2016] [Indexed: 12/19/2022] Open
Abstract
The advent of whole-genome sequencing has provided an unprecedented detail about the evolution and genetic significance of species-specific variations across the whole Mycobacterium tuberculosis Complex. However, little attention has been focused on understanding the functional roles of these variations in the protein coding sequences. In this work, we compare the coding sequences from 74 sequenced mycobacterial species including M. africanum, M. bovis, M. canettii, M. caprae, M. orygis, and M. tuberculosis. Results show that albeit protein variations affect all functional classes, those proteins involved in lipid and intermediary metabolism and respiration have accumulated mutations during evolution. To understand the impact of these mutations on protein functionality, we explored their implications on protein ductility/disorder, a yet unexplored feature of mycobacterial proteomes. In agreement with previous studies, we found that a Gly71Ile substitution in the PhoPR virulence system severely affects the ductility of its nearby region in M. africanum and animal-adapted species. In the same line of evidence, the SmtB transcriptional regulator shows amino acid variations specific to the Beijing lineage, which affects the flexibility of the N-terminal trans-activation domain. Furthermore, despite the fact that MTBC epitopes are evolutionary hyperconserved, we identify strain- and lineage-specific amino acid mutations affecting previously known T-cell epitopes such as EsxH and FbpA (Ag85A). Interestingly, in silico studies reveal that these variations result in differential interaction of epitopes with the main HLA haplogroups.
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Affiliation(s)
- Inmaculada Yruela
- Estación Experimental de Aula Dei-Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Zaragoza, Spain.,Grupo de Bioquímica, Biofísica y Biología Computacional (BIFI, UNIZAR), Unidad Asociada I+D+i al CSIC, Zaragoza, Spain
| | - Bruno Contreras-Moreira
- Estación Experimental de Aula Dei-Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Zaragoza, Spain.,Grupo de Bioquímica, Biofísica y Biología Computacional (BIFI, UNIZAR), Unidad Asociada I+D+i al CSIC, Zaragoza, Spain.,Fundación ARAID, Aragón, Spain
| | - Carlos Magalhães
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Nuno S Osório
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Jesús Gonzalo-Asensio
- Grupo de Genética de Micobacterias, Departamento de Microbiología y Medicina Preventiva, Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain.,CIBER Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.,Instituto de Biocomputación y Física de Sistemas Complejos (BIFI-UNIZAR), Zaragoza, Spain.,Servicio de Microbiología Hospital Universitario Miguel Servet, ISS Aragón, Zaragoza, Spain
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26
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Jia X, Yang L, Dong M, Chen S, Lv L, Cao D, Fu J, Yang T, Zhang J, Zhang X, Shang Y, Wang G, Sheng Y, Huang H, Chen F. The Bioinformatics Analysis of Comparative Genomics of Mycobacterium tuberculosis Complex (MTBC) Provides Insight into Dissimilarities between Intraspecific Groups Differing in Host Association, Virulence, and Epitope Diversity. Front Cell Infect Microbiol 2017; 7:88. [PMID: 28377903 PMCID: PMC5360109 DOI: 10.3389/fcimb.2017.00088] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 03/06/2017] [Indexed: 12/31/2022] Open
Abstract
Tuberculosis now exceeds HIV as the top infectious disease cause of mortality, and is caused by the Mycobacterium tuberculosis complex (MTBC). MTBC strains have highly conserved genome sequences (similarity >99%) but dramatically different phenotypes. To analyze the relationship between genotype and phenotype, we conducted the comparative genomic analysis on 12 MTBC strains representing different lineages (i.e., Mycobacterium bovis; M. bovis BCG; M. microti; M. africanum; M. tuberculosis H37Rv; M. tuberculosis H37Ra, and six M. tuberculosis clinical isolates). The analysis focused on the three aspects of pathogenicity: host association, virulence, and epitope variations. Host association analysis indicated that eight mce3 genes, two enoyl-CoA hydratases, and five PE/PPE family genes were present only in human isolates; these may have roles in host-pathogen interactions. There were 15 SNPs found on virulence factors (including five SNPs in three ESX secretion proteins) only in the Beijing strains, which might be related to their more virulent phenotype. A comparison between the virulent H37Rv and non-virulent H37Ra strains revealed three SNPs that were likely associated with the virulence attenuation of H37Ra: S219L (PhoP), A219E (MazG) and a newly identified I228M (EspK). Additionally, a comparison of animal-associated MTBC strains showed that the deletion of the first four genes (i.e., pe35, ppe68, esxB, esxA), rather than all eight genes of RD1, might play a central role in the virulence attenuation of animal isolates. Finally, by comparing epitopes among MTBC strains, we found that four epitopes were lost only in the Beijing strains; this may render them better capable of evading the human immune system, leading to enhanced virulence. Overall, our comparative genomic analysis of MTBC strains reveals the relationship between the highly conserved genotypes and the diverse phenotypes of MTBC, provides insight into pathogenic mechanisms, and facilitates the development of potential molecular targets for the prevention and treatment of tuberculosis.
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Affiliation(s)
- Xinmiao Jia
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of SciencesBeijing, China; College of Life Sciences, University of Chinese Academy of SciencesBeijing, China
| | - Li Yang
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of SciencesBeijing, China; College of Life Sciences, University of Chinese Academy of SciencesBeijing, China
| | - Mengxing Dong
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of SciencesBeijing, China; College of Life Sciences, University of Chinese Academy of SciencesBeijing, China
| | - Suting Chen
- National Clinical Laboratory on Tuberculosis, Beijing Key Laboratory on Drug-resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute Beijing, China
| | - Lingna Lv
- National Clinical Laboratory on Tuberculosis, Beijing Key Laboratory on Drug-resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute Beijing, China
| | - Dandan Cao
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of Sciences Beijing, China
| | - Jing Fu
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of SciencesBeijing, China; College of Life Sciences, University of Chinese Academy of SciencesBeijing, China
| | - Tingting Yang
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of SciencesBeijing, China; College of Life Sciences, University of Chinese Academy of SciencesBeijing, China
| | - Ju Zhang
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of Sciences Beijing, China
| | - Xiangli Zhang
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of SciencesBeijing, China; College of Life Sciences, University of Chinese Academy of SciencesBeijing, China
| | - Yuanyuan Shang
- National Clinical Laboratory on Tuberculosis, Beijing Key Laboratory on Drug-resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute Beijing, China
| | - Guirong Wang
- National Clinical Laboratory on Tuberculosis, Beijing Key Laboratory on Drug-resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute Beijing, China
| | - Yongjie Sheng
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, Jilin University Changchun, China
| | - Hairong Huang
- National Clinical Laboratory on Tuberculosis, Beijing Key Laboratory on Drug-resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute Beijing, China
| | - Fei Chen
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of SciencesBeijing, China; College of Life Sciences, University of Chinese Academy of SciencesBeijing, China; Sino-Danish College, University of Chinese Academy of SciencesBeijing, China; Collaborative Innovation Center for Genetics and DevelopmentShanghai, China
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27
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Zumla A, Otchere ID, Mensah GI, Asante-Poku A, Gehre F, Maeurer M, Bates M, Mwaba P, Ntoumi F, Yeboah-Manu D. Learning from epidemiological, clinical, and immunological studies on Mycobacterium africanum for improving current understanding of host–pathogen interactions, and for the development and evaluation of diagnostics, host-directed therapies, and vaccines for tuberculosis. Int J Infect Dis 2017; 56:126-129. [DOI: 10.1016/j.ijid.2016.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/01/2016] [Accepted: 12/05/2016] [Indexed: 11/25/2022] Open
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28
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Manson AL, Cohen KA, Abeel T, Desjardins CA, Armstrong DT, Barry CE, Brand J, Chapman SB, Cho SN, Gabrielian A, Gomez J, Jodals AM, Joloba M, Jureen P, Lee JS, Malinga L, Maiga M, Nordenberg D, Noroc E, Romancenco E, Salazar A, Ssengooba W, Velayati AA, Winglee K, Zalutskaya A, Via LE, Cassell GH, Dorman SE, Ellner J, Farnia P, Galagan JE, Rosenthal A, Crudu V, Homorodean D, Hsueh PR, Narayanan S, Pym AS, Skrahina A, Swaminathan S, Van der Walt M, Alland D, Bishai WR, Cohen T, Hoffner S, Birren BW, Earl AM. Genomic analysis of globally diverse Mycobacterium tuberculosis strains provides insights into the emergence and spread of multidrug resistance. Nat Genet 2017; 49:395-402. [PMID: 28092681 PMCID: PMC5402762 DOI: 10.1038/ng.3767] [Citation(s) in RCA: 169] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 12/14/2016] [Indexed: 11/09/2022]
Abstract
Multidrug-resistant tuberculosis (MDR-TB), caused by drug resistant strains of Mycobacterium tuberculosis, is an increasingly serious problem worldwide. In this study, we examined a dataset of 5,310 M. tuberculosis whole genome sequences from five continents. Despite great diversity with respect to geographic point of isolation, genetic background and drug resistance, patterns of drug resistance emergence were conserved globally. We have identified harbinger mutations that often precede MDR. In particular, the katG S315T mutation, conferring resistance to isoniazid, overwhelmingly arose before rifampicin resistance across all lineages, geographic regions, and time periods. Molecular diagnostics that include markers for rifampicin resistance alone will be insufficient to identify pre-MDR strains. Incorporating knowledge of pre-MDR polymorphisms, particularly katG S315, into molecular diagnostics will enable targeted treatment of patients with pre-MDR-TB to prevent further development of MDR-TB.
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Affiliation(s)
- Abigail L Manson
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Keira A Cohen
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA.,KwaZulu-Natal Research Institute for TB and HIV (K-RITH), Durban, South Africa.,Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Thomas Abeel
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA.,Delft Bioinformatics Lab, Delft University of Technology, Delft, the Netherlands
| | | | - Derek T Armstrong
- Center for Tuberculosis Research, Johns Hopkins University, Baltimore, Maryland, USA
| | - Clifton E Barry
- National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, Maryland, USA
| | - Jeannette Brand
- Medical Research Council, TB Platform, Pretoria, South Africa
| | | | - Sinéad B Chapman
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Sang-Nae Cho
- International Tuberculosis Research Center, Changwon and Department of Microbiology, Yonsei University College of Medicine, Seoul, South Korea
| | - Andrei Gabrielian
- Office of Cyber Infrastructure and Computational Biology, National Institutes of Health, Rockville, Maryland, USA
| | - James Gomez
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Andreea M Jodals
- Clinical Hospital of Pneumology Leon Daniello, Cluj Napoca, Romania
| | - Moses Joloba
- Department of Medical Microbiology, Mycobacteriology Laboratory, Makerere University, Kampala, Uganda
| | | | - Jong Seok Lee
- International Tuberculosis Research Center, Changwon and Department of Microbiology, Yonsei University College of Medicine, Seoul, South Korea
| | | | - Mamoudou Maiga
- University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | | | - Ecaterina Noroc
- Microbiology and Morphology Laboratory, Phthisiopneumology Institute, Chisinau, Moldova
| | - Elena Romancenco
- Microbiology and Morphology Laboratory, Phthisiopneumology Institute, Chisinau, Moldova
| | - Alex Salazar
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA.,Delft Bioinformatics Lab, Delft University of Technology, Delft, the Netherlands
| | - Willy Ssengooba
- Department of Medical Microbiology, Mycobacteriology Laboratory, Makerere University, Kampala, Uganda
| | - A A Velayati
- Mycobacteriology Research Centre, National Research Institute of Tuberculosis and Lung Disease (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kathryn Winglee
- Center for Tuberculosis Research, Johns Hopkins University, Baltimore, Maryland, USA
| | - Aksana Zalutskaya
- Republican Research and Practical Centre for Pulmonology and Tuberculosis, Minsk, Belarus
| | - Laura E Via
- National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, Maryland, USA
| | - Gail H Cassell
- Department of Global Health and Social Medicine, Harvard Medical School, Division of Global Health Equity, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Susan E Dorman
- Center for Tuberculosis Research, Johns Hopkins University, Baltimore, Maryland, USA
| | - Jerrold Ellner
- Section of Infectious Diseases, Boston Medical Center, Boston, Massachusetts, USA
| | - Parissa Farnia
- Mycobacteriology Research Centre, National Research Institute of Tuberculosis and Lung Disease (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - James E Galagan
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA.,Department of Biomedical Engineering and Microbiology, Boston University, Boston, Massachusetts, USA
| | - Alex Rosenthal
- Office of Cyber Infrastructure and Computational Biology, National Institutes of Health, Rockville, Maryland, USA
| | - Valeriu Crudu
- Microbiology and Morphology Laboratory, Phthisiopneumology Institute, Chisinau, Moldova
| | | | - Po-Ren Hsueh
- National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | | | - Alexander S Pym
- KwaZulu-Natal Research Institute for TB and HIV (K-RITH), Durban, South Africa
| | - Alena Skrahina
- Republican Research and Practical Centre for Pulmonology and Tuberculosis, Minsk, Belarus
| | | | | | - David Alland
- Rutgers-New Jersey Medical School, Newark, New Jersey, USA
| | - William R Bishai
- KwaZulu-Natal Research Institute for TB and HIV (K-RITH), Durban, South Africa.,Center for Tuberculosis Research, Johns Hopkins University, Baltimore, Maryland, USA
| | - Ted Cohen
- Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.,Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, Connecticut, USA
| | | | - Bruce W Birren
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Ashlee M Earl
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
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29
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Borrell S, Trauner A. Strain Diversity and the Evolution of Antibiotic Resistance. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1019:263-279. [PMID: 29116640 DOI: 10.1007/978-3-319-64371-7_14] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Drug resistance is best thought of as an ongoing biological process. Resistant bacteria must emerge, become established and ultimately transmit in order to be relevant to human health. In this context, genetic diversity can influence the rate and likelihood of resistance emerging; it can also modulate the net physiological impact of resistance and the propensity of an organism to improve any defects that arise from it. Combined, these effects can have an impact on a larger scale, with highly transmissible drug-resistant bacterial strains posing a formidable threat to global health. These considerations are pertinent to the future of tuberculosis control as well. In this chapter, we review our current understanding of the impact of genetic diversity in the broadest sense on the evolution of drug-resistant members of the Mycobacterium tuberculosis complex.
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Affiliation(s)
- Sonia Borrell
- Swiss Tropical and Public Health Institute, Socinstrasse 57, 4002, Basel, Switzerland. .,University of Basel, Basel, Switzerland.
| | - Andrej Trauner
- Swiss Tropical and Public Health Institute, Socinstrasse 57, 4002, Basel, Switzerland.,University of Basel, Basel, Switzerland
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30
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Wiens KE, Ernst JD. The Mechanism for Type I Interferon Induction by Mycobacterium tuberculosis is Bacterial Strain-Dependent. PLoS Pathog 2016; 12:e1005809. [PMID: 27500737 PMCID: PMC4976988 DOI: 10.1371/journal.ppat.1005809] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Accepted: 07/13/2016] [Indexed: 12/30/2022] Open
Abstract
Type I interferons (including IFNαβ) are innate cytokines that may contribute to pathogenesis during Mycobacterium tuberculosis (Mtb) infection. To induce IFNβ, Mtb must gain access to the host cytosol and trigger stimulator of interferon genes (STING) signaling. A recently proposed model suggests that Mtb triggers STING signaling through bacterial DNA binding cyclic GMP-AMP synthase (cGAS) in the cytosol. The aim of this study was to test the generalizability of this model using phylogenetically distinct strains of the Mtb complex (MTBC). We infected bone marrow derived macrophages with strains from MTBC Lineages 2, 4 and 6. We found that the Lineage 6 strain induced less IFNβ, and that the Lineage 2 strain induced more IFNβ, than the Lineage 4 strain. The strains did not differ in their access to the host cytosol and IFNβ induction by each strain required both STING and cGAS. We also found that the three strains shed similar amounts of bacterial DNA. Interestingly, we found that the Lineage 6 strain was associated with less mitochondrial stress and less mitochondrial DNA (mtDNA) in the cytosol compared with the Lineage 4 strain. Treating macrophages with a mitochondria-specific antioxidant reduced cytosolic mtDNA and inhibited IFNβ induction by the Lineage 2 and 4 strains. We also found that the Lineage 2 strain did not induce more mitochondrial stress than the Lineage 4 strain, suggesting that additional pathways contribute to higher IFNβ induction. These results indicate that the mechanism for IFNβ by Mtb is more complex than the established model suggests. We show that mitochondrial dynamics and mtDNA contribute to IFNβ induction by Mtb. Moreover, we show that the contribution of mtDNA to the IFNβ response varies by MTBC strain and that additional mechanisms exist for Mtb to induce IFNβ.
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Affiliation(s)
- Kirsten E. Wiens
- Department of Pathology, New York University School of Medicine, New York, New York, United States of America
- Division of Infectious Disease, Department of Medicine, New York University School of Medicine, New York, New York, United States of America
| | - Joel D. Ernst
- Department of Pathology, New York University School of Medicine, New York, New York, United States of America
- Division of Infectious Disease, Department of Medicine, New York University School of Medicine, New York, New York, United States of America
- Department of Microbiology, New York University School of Medicine, New York, New York, United States of America
- * E-mail:
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31
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Tientcheu LD, Haks MC, Agbla SC, Sutherland JS, Adetifa IM, Donkor S, Quinten E, Daramy M, Antonio M, Kampmann B, Ottenhoff THM, Dockrell HM, Ota MO. Host Immune Responses Differ between M. africanum- and M. tuberculosis-Infected Patients following Standard Anti-tuberculosis Treatment. PLoS Negl Trop Dis 2016; 10:e0004701. [PMID: 27192147 PMCID: PMC4871581 DOI: 10.1371/journal.pntd.0004701] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 04/19/2016] [Indexed: 11/19/2022] Open
Abstract
Epidemiological differences exist between Mycobacterium africanum (Maf)- and Mycobacterium tuberculosis (Mtb)-infected patients, but to date, contributing host factors have not been characterised. We analysed clinical outcomes, as well as soluble markers and gene expression profiles in unstimulated, and ESAT6/CFP-10-, whole-Maf- and Mtb-stimulated blood samples of 26 Maf- and 49 Mtb-HIV-negative tuberculosis patients before, and after 2 and 6 months of anti-tuberculosis therapy. Before treatment, both groups had similar clinical parameters, but differed in few cytokines concentration and gene expression profiles. Following treatment the body mass index, skinfold thickness and chest X-ray scores showed greater improvement in the Mtb- compared to Maf-infected patients, after adjusting for age, sex and ethnicity (p = 0.02; 0.04 and 0.007, respectively). In addition, in unstimulated blood, IL-12p70, IL12A and TLR9 were significantly higher in Maf-infected patients, while IL-15, IL-8 and MIP-1α were higher in Mtb-infected patients. Overnight stimulation with ESAT-6/CFP-10 induced significantly higher levels of IFN-γ and TNF-α production, as well as gene expression of CCL4, IL1B and TLR4 in Mtb- compared to Maf-infected patients. Our study confirms differences in clinical features and immune genes expression and concentration of proteins associated with inflammatory processes between Mtb- and Maf-infected patients following anti-tuberculosis treatment These findings have public health implications for treatment regimens, and biomarkers for tuberculosis diagnosis and susceptibility.
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Affiliation(s)
- Leopold D. Tientcheu
- Vaccines and Immunity Theme, Medical Research Council Unit, The Gambia, Banjul, The Gambia
- Department of Immunology and Infection, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Department of Biochemistry, Faculty of Science, University of Yaoundé 1, Yaoundé, Cameroon
- * E-mail: ;
| | - Mariëlle C. Haks
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Schadrac C. Agbla
- Vaccines and Immunity Theme, Medical Research Council Unit, The Gambia, Banjul, The Gambia
- Department of Medical Statistics, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Jayne S. Sutherland
- Vaccines and Immunity Theme, Medical Research Council Unit, The Gambia, Banjul, The Gambia
| | - Ifedayo M. Adetifa
- Disease Control and Elimination Theme, Medical Research Council Unit, The Gambia, Fajara, The Gambia
- Department of Infectious Diseases Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Simon Donkor
- Vaccines and Immunity Theme, Medical Research Council Unit, The Gambia, Banjul, The Gambia
| | - Edwin Quinten
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Mohammed Daramy
- Vaccines and Immunity Theme, Medical Research Council Unit, The Gambia, Banjul, The Gambia
| | - Martin Antonio
- Vaccines and Immunity Theme, Medical Research Council Unit, The Gambia, Banjul, The Gambia
- Department of Pathogen Molecular Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
- Microbiology and Infection Unit, Warwick Medical School, University of Warwick, Coventry, United Kingdom
| | - Beate Kampmann
- Vaccines and Immunity Theme, Medical Research Council Unit, The Gambia, Banjul, The Gambia
| | - Tom H. M. Ottenhoff
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Hazel M. Dockrell
- Department of Immunology and Infection, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Martin O. Ota
- Vaccines and Immunity Theme, Medical Research Council Unit, The Gambia, Banjul, The Gambia
- World Health Organization Regional Office for Africa, Brazzaville, Congo
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