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Конвергентные мутации, ассоциированные с лекарственной устойчивостью M. tuberculosis

выпускная квалификационная работа магистра по направлению 03.04.02 - Физика ; 03.04.02_02 - Биофизика

Конвергентные мутации, ассоциированные с лекарственной устойчивостью M. tuberculosis

Abstract

Эволюция механизмов лекарственной устойчивости M.tuberculosis представляет серьезную проблему для здравоохранения. Настоящая работа посвящена имплементации алгоритма полногеномного поиска ассоциаций - филогенетического теста convPhy, цель которого - идентификация конвергентных мутаций, произошедших под действием противотуберкулезного препарата. Результаты тестирования разработанного метода показали хорошее соответствие с ранее опубликованными данными по маркерам резистентности к противотуберкулезным препаратам для изониазида, рифампицина и этамбутола в индийской популяции M. tuberculosis. Применение алгоритма convPhy при анализе новых данных полногеномного секвенирования 65 внелегочных и 71 легочного российских изолятов, выявило ассоциацию локализации возбудителя с мутациями в генах PE/PPE. Кроме того, алгоритм обнаружил интересные паттерны кооперативного взаимодействия ОНП (однонуклеотидных полиморфизмов) у образцов, чья устойчивость к изониазиду и рифампицину не объясняется известными мутациями S315T katG и S450L rpoВ как в индийской, так и в российской популяции.

The evolution of drug resistance mechanisms of M. tuberculosis is a global healthcare challenge. The present study contains implementation of genome-wide association study algorithm convPhy based on developing convergence mutations. The test result of developed method shows strong concordance with previously published data. The application of the algorithm convPhy in the analysis of the new data genome sequencing 65 pulmonary and 71 extrapulmonary Russian isolates revealed association of pathogen localization with mutations in the genes of PE/PPE. In addition, the algorithm detected interesting patterns of cooperative SNPs (single-nucleotide polymorphisms) interaction in samples whose resistance to isoniazid and rifampicin is not explained by known mutations of S315T katG and S450L rpoB in both the Indian and Russian populations.

Keywords

резистентность к антибиотикам, туберкулез, рифампицин, этамбутол, Mycobacterium tuberculosis, лекарственная устойчивость, изониазид, противотуберкулезные препараты

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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