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Chinese Journal of Antituberculosis ›› 2022, Vol. 44 ›› Issue (11): 1199-1204.doi: 10.19982/j.issn.1000-6621.20220250

• Review Articles • Previous Articles     Next Articles

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)

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

CLC Number: