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中国防痨杂志 ›› 2022, Vol. 44 ›› Issue (11): 1199-1204.doi: 10.19982/j.issn.1000-6621.20220250

• 综述 • 上一篇    下一篇

基于全基因组测序结核分枝杆菌宿主内异质性的鉴定及其研究进展

张睿, 刘艳萍, 钱军, 方强林, 杨崇广()   

  1. 中山大学(深圳)公共卫生学院,深圳 518107
  • 收稿日期:2022-07-07 出版日期:2022-11-10 发布日期:2022-11-03
  • 基金资助:
    深圳南山区高水平医学团队项目(SZSM202103008)

Updates on the application of whole-genome sequencing for within-host heterogeneity of Mycobacterium tuberculosis

Zhang Rui, Liu Yanping, Qian Jun, Fang Qianglin, Yang Chongguang()   

  1. School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
  • Received:2022-07-07 Online:2022-11-10 Published:2022-11-03
  • Supported by:
    High-level Medical Team Project in Nanshan District, Shenzhen(SZSM202103008)

摘要:

结核分枝杆菌(Mycobacterium tuberculosis,MTB)作为引发结核病的主要病原体,其遗传多态性相对保守,随着二代全基因组测序技术的发展和普及,在不同宿主甚至同一宿主内都可观察到MTB菌株丰富的遗传异质性。宿主内异质性的成因包括不同菌株的多重(混合)感染和同一菌株的微进化。宿主内异质性的发生机制及其对MTB耐药、传播和诊疗等方面的影响及应用尚未完全清楚。本文综述了MTB宿主内遗传异质性的鉴定及相关研究进展,以期为结核病防控工作提供更多新思路。

关键词: 分枝杆菌,结核, 遗传异质性, 全基因组测序, 感染, 综述

Abstract:

Tuberculosis (TB) is an infectious disease caused by the Mycobacterium tuberculosis (MTB). The genetic polymorphism of the MTB complex is relatively conservative. With the impressive progress in the field of next generation sequencing (NGS) and the whole-genome sequencing (WGS) analysis, vast genetic heterogeneity has been observed in MTB isolates from different hosts and even within the same host. The reasons for this phenomenon are complex, at least including multiple or mixed infections of different strains and microevolution of the same strain within the host. Still, its mechanism and role in drug resistance, transmission, diagnosis and treatment of TB are not fully understood. This article reviews the identification and current research progress of the within-host genetic heterogeneity of MTB.

Key words: Mycobacterium tuberculosis, Genetic heterogeneity, Whole-genome sequencing, Infection, Review

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