Molecular Insight into <em>Mycobacterium tuberculosis</em> Resistance to Nitrofuranyl Amides Gained through Metagenomics-like Analysis of Spontaneous Mutants

We performed synthesis of new nitrofuranyl amides and investigated their anti-TB activity and primary genetic response of mycobacteria through whole-genome sequencing (WGS) of spontaneous resistant mutants. The in vitro activity was assessed on reference strain <i>Mycobacterium tuberculosis<...

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Main Authors: Igor Mokrousov, Ivaylo Slavchev, Natalia Solovieva, Marine Dogonadze, Anna Vyazovaya, Violeta Valcheva, Aleksey Masharsky, Olesya Belopolskaya, Simeon Dimitrov, Viacheslav Zhuravlev, Isabel Portugal, João Perdigão, Georgi M. Dobrikov
Format: Article
Language:English
Published: MDPI AG 2022-09-01
Series:Pharmaceuticals
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Online Access:https://www.mdpi.com/1424-8247/15/9/1136
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author Igor Mokrousov
Ivaylo Slavchev
Natalia Solovieva
Marine Dogonadze
Anna Vyazovaya
Violeta Valcheva
Aleksey Masharsky
Olesya Belopolskaya
Simeon Dimitrov
Viacheslav Zhuravlev
Isabel Portugal
João Perdigão
Georgi M. Dobrikov
author_facet Igor Mokrousov
Ivaylo Slavchev
Natalia Solovieva
Marine Dogonadze
Anna Vyazovaya
Violeta Valcheva
Aleksey Masharsky
Olesya Belopolskaya
Simeon Dimitrov
Viacheslav Zhuravlev
Isabel Portugal
João Perdigão
Georgi M. Dobrikov
author_sort Igor Mokrousov
collection DOAJ
description We performed synthesis of new nitrofuranyl amides and investigated their anti-TB activity and primary genetic response of mycobacteria through whole-genome sequencing (WGS) of spontaneous resistant mutants. The in vitro activity was assessed on reference strain <i>Mycobacterium tuberculosis</i> H37Rv. The most active compound <b>11</b> was used for in vitro selection of spontaneous resistant mutants. The same mutations in six genes were detected in bacterial cultures grown under increased concentrations of <b>11</b> (2×, 4×, 8× MIC). The mutant positions were presented as mixed wild type and mutant alleles while increasing the concentration of the compound led to the semi-proportional and significant increase in mutant alleles. The identified genes belong to different categories and pathways. Some of them were previously reported as mediating drug resistance or drug tolerance, and counteracting oxidative and nitrosative stress, in particular: <i>Rv0224c</i>, <i>fbiC</i>, <i>iniA</i>, and <i>Rv1592c</i>. Gene-set interaction analysis revealed a certain weak interaction for gene pairs <i>Rv1592–Rv1639c</i> and <i>Rv1592–Rv0224c</i>. To conclude, this study experimentally demonstrated a multifaceted primary genetic response of <i>M. tuberculosis</i> to the action of nitrofurans. All three <b>11</b>-treated subcultures independently presented the same six SNPs, which suggests their non-random occurrence and likely causative relationship between compound action and possible resistance mechanism.
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spelling doaj.art-dfe2d0d6f8744416ae081ad8f58b94f82023-11-23T18:19:18ZengMDPI AGPharmaceuticals1424-82472022-09-01159113610.3390/ph15091136Molecular Insight into <em>Mycobacterium tuberculosis</em> Resistance to Nitrofuranyl Amides Gained through Metagenomics-like Analysis of Spontaneous MutantsIgor Mokrousov0Ivaylo Slavchev1Natalia Solovieva2Marine Dogonadze3Anna Vyazovaya4Violeta Valcheva5Aleksey Masharsky6Olesya Belopolskaya7Simeon Dimitrov8Viacheslav Zhuravlev9Isabel Portugal10João Perdigão11Georgi M. Dobrikov12Laboratory of Molecular Epidemiology and Evolutionary Genetics, St. Petersburg Pasteur Institute, 197101 St. Petersburg, RussiaInstitute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Siences, Acad. G. Bonchev Street, bl. 9, 1113 Sofia, BulgariaSt. Petersburg Research Institute of Phthisiopulmonology, 191036 St. Petersburg, RussiaSt. Petersburg Research Institute of Phthisiopulmonology, 191036 St. Petersburg, RussiaLaboratory of Molecular Epidemiology and Evolutionary Genetics, St. Petersburg Pasteur Institute, 197101 St. Petersburg, RussiaThe Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, bl. 26, 1113 Sofia, BulgariaResource Center “Bio-bank Center”, Research Park of St. Petersburg State University, 198504 St. Petersburg, RussiaResource Center “Bio-bank Center”, Research Park of St. Petersburg State University, 198504 St. Petersburg, RussiaThe Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, bl. 26, 1113 Sofia, BulgariaSt. Petersburg Research Institute of Phthisiopulmonology, 191036 St. Petersburg, RussiaiMed.ULisboa–Instituto de Investigação do Medicamento, Faculdade de Farmácia, Universidade de Lisboa, 1649004 Lisbon, PortugaliMed.ULisboa–Instituto de Investigação do Medicamento, Faculdade de Farmácia, Universidade de Lisboa, 1649004 Lisbon, PortugalInstitute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Siences, Acad. G. Bonchev Street, bl. 9, 1113 Sofia, BulgariaWe performed synthesis of new nitrofuranyl amides and investigated their anti-TB activity and primary genetic response of mycobacteria through whole-genome sequencing (WGS) of spontaneous resistant mutants. The in vitro activity was assessed on reference strain <i>Mycobacterium tuberculosis</i> H37Rv. The most active compound <b>11</b> was used for in vitro selection of spontaneous resistant mutants. The same mutations in six genes were detected in bacterial cultures grown under increased concentrations of <b>11</b> (2×, 4×, 8× MIC). The mutant positions were presented as mixed wild type and mutant alleles while increasing the concentration of the compound led to the semi-proportional and significant increase in mutant alleles. The identified genes belong to different categories and pathways. Some of them were previously reported as mediating drug resistance or drug tolerance, and counteracting oxidative and nitrosative stress, in particular: <i>Rv0224c</i>, <i>fbiC</i>, <i>iniA</i>, and <i>Rv1592c</i>. Gene-set interaction analysis revealed a certain weak interaction for gene pairs <i>Rv1592–Rv1639c</i> and <i>Rv1592–Rv0224c</i>. To conclude, this study experimentally demonstrated a multifaceted primary genetic response of <i>M. tuberculosis</i> to the action of nitrofurans. All three <b>11</b>-treated subcultures independently presented the same six SNPs, which suggests their non-random occurrence and likely causative relationship between compound action and possible resistance mechanism.https://www.mdpi.com/1424-8247/15/9/1136nitrofuranyl amides<i>mycobacterium tuberculosis</i>spontaneous mutagenesiswhole-genome sequencing
spellingShingle Igor Mokrousov
Ivaylo Slavchev
Natalia Solovieva
Marine Dogonadze
Anna Vyazovaya
Violeta Valcheva
Aleksey Masharsky
Olesya Belopolskaya
Simeon Dimitrov
Viacheslav Zhuravlev
Isabel Portugal
João Perdigão
Georgi M. Dobrikov
Molecular Insight into <em>Mycobacterium tuberculosis</em> Resistance to Nitrofuranyl Amides Gained through Metagenomics-like Analysis of Spontaneous Mutants
Pharmaceuticals
nitrofuranyl amides
<i>mycobacterium tuberculosis</i>
spontaneous mutagenesis
whole-genome sequencing
title Molecular Insight into <em>Mycobacterium tuberculosis</em> Resistance to Nitrofuranyl Amides Gained through Metagenomics-like Analysis of Spontaneous Mutants
title_full Molecular Insight into <em>Mycobacterium tuberculosis</em> Resistance to Nitrofuranyl Amides Gained through Metagenomics-like Analysis of Spontaneous Mutants
title_fullStr Molecular Insight into <em>Mycobacterium tuberculosis</em> Resistance to Nitrofuranyl Amides Gained through Metagenomics-like Analysis of Spontaneous Mutants
title_full_unstemmed Molecular Insight into <em>Mycobacterium tuberculosis</em> Resistance to Nitrofuranyl Amides Gained through Metagenomics-like Analysis of Spontaneous Mutants
title_short Molecular Insight into <em>Mycobacterium tuberculosis</em> Resistance to Nitrofuranyl Amides Gained through Metagenomics-like Analysis of Spontaneous Mutants
title_sort molecular insight into em mycobacterium tuberculosis em resistance to nitrofuranyl amides gained through metagenomics like analysis of spontaneous mutants
topic nitrofuranyl amides
<i>mycobacterium tuberculosis</i>
spontaneous mutagenesis
whole-genome sequencing
url https://www.mdpi.com/1424-8247/15/9/1136
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