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Abstract <p><i>Mycobacterium abscessus</i> is a non-tuberculosis fast-growing mycobacterium that has recently become a serious concern due to its rapidly increasing prevalence worldwide, mainly in individuals with a high susceptibility to pulmonary infections, for example, patients with cystic fibrosis, bronchiectasis, chronic obstructive pulmonary disease, and previous tuberculosis infection. According to present estimations, at least 20% of patients with cystic fibrosis are infected with <i>M</i>.&#xa0;<i>abscessus</i>. This bacterium is extremely resistant to most drugs, leading to a severe and difficult-to-treat infection. That is why <i>M.&#xa0;abscessus</i>, previously classified as a low-virulent opportunistic pathogen, is now reconsidered as a true pathogenic bacterium. There are no effective drugs for successful <i>M.&#xa0;abscessus</i> infection therapy, as well as no vaccines to prevent its spread. This review focuses on the molecular mechanisms ensuring <i>M.&#xa0;abscessus</i> resistance to immune response and its ability to survive in the aggressive intracellular environment of human immune cells, and describes virulence factors that can serve as potential targets for the development of innovative therapeutic approaches to combat the spread of infections caused by <i>M.&#xa0;abscessus</i>.</p>

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Mechanisms of Virulence of Mycobacterium abscessus and Interaction with the Host Immune System

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • Ekaterina V. Zakhareva,
  • Billy A. Martini,
  • Elena G. Salina

摘要

Abstract

Mycobacterium abscessus is a non-tuberculosis fast-growing mycobacterium that has recently become a serious concern due to its rapidly increasing prevalence worldwide, mainly in individuals with a high susceptibility to pulmonary infections, for example, patients with cystic fibrosis, bronchiectasis, chronic obstructive pulmonary disease, and previous tuberculosis infection. According to present estimations, at least 20% of patients with cystic fibrosis are infected with M. abscessus. This bacterium is extremely resistant to most drugs, leading to a severe and difficult-to-treat infection. That is why M. abscessus, previously classified as a low-virulent opportunistic pathogen, is now reconsidered as a true pathogenic bacterium. There are no effective drugs for successful M. abscessus infection therapy, as well as no vaccines to prevent its spread. This review focuses on the molecular mechanisms ensuring M. abscessus resistance to immune response and its ability to survive in the aggressive intracellular environment of human immune cells, and describes virulence factors that can serve as potential targets for the development of innovative therapeutic approaches to combat the spread of infections caused by M. abscessus.