雷霞,博士,教授,研究方向:皮肤感染与新型治疗方式。E-mail:dpyyskinlx#tmmu.edu.cn
王小雨,博士,副研究员,研究方向:皮肤感染与新型治疗方式。E-mail:xiaoyuellen1992#tmmu.edu.cn
梁懿,博士,主治医师,研究方向:光电疗法在创面愈合中的作用机制。E-mail:15683417308#163.com收稿日期: 2026-05-09
修回日期: 2026-09-04
网络出版日期: 2026-09-11
基金资助
国家自然科学基金(编号:82473540,82504301,82402922)和陆军特色医学中心博士后创新人才支持计划(编号:ZXBSH022)资助[Supported by the National Natural Science Foundation of China (Nos. 82473540,82504301,82402922), and the Postdoctoral Innovation Talent Support Program of the Army Medical Center of PLA (No. ZXBSH022)]
Progress on the role and mechanism of macrophages in Mycobacterium abscessus infection
Army Medical Center of PLA,Chongqing 400042,China
Received date: 2026-05-09
Revised date: 2026-09-04
Online published: 2026-09-11
宋学斐, 邓笑林, 寇振宇, 梁懿, 王小雨, 雷霞 . 巨噬细胞在脓肿分枝杆菌感染中的作用及机制研究进展[J]. 遗传, 0 : 0 . DOI: 10.16288/j.yczz.26-052
Mycobacterium abscessus (Mab) ranks among the most drug-resistant and therapeutically recalcitrant rapidly growing non-tuberculous mycobacteria and has emerged as a persistent clinical challenge in pulmonary and skin/soft-tissue infections. Macrophages, as central effectors of innate immunity, paradoxically constitute the principal intracellular niche that Mab exploits for survival and immune evasion. The pathogen exists in two distinct colony morphotypes—smooth (Mab-S) and rough (Mab-R)—that differ in host recognition, intracellular trafficking, and the immune responses they elicit. Mab-S is shielded by a surface glycopeptidolipid (GPL) layer that masks TLR2 ligands, forms loner phagosomes that resist phagosome–lysosome fusion, and blocks autophagic flux through the ESX-3/ESX-4 secretion systems. By contrast, GPL-deficient Mab-R exposes TLR2 ligands, generates social phagosomes that fuse rapidly with lysosomes, and activates NLRP3/GSDMD-mediated pyroptosis, thereby enabling bacterial dissemination. Mab further subverts host cell death pathways—apoptosis, necroptosis, and ferroptosis—and manipulates M1/M2 macrophage polarization to sustain an intracellular niche permissive for persistence. In this review, we systematically dissect the molecular mechanisms governing macrophage–Mab interactions and evaluate therapeutic strategies targeting this interface. We propose a tripartite treatment framework integrating immunomodulation, antibiotics, and virulence factor inhibition. Finally, we identify the dynamics of macrophage polarization within distinct infection microenvironments as a central priority for future mechanistic and translational investigation. This review advances understanding of Mab immune evasion and provides a conceptual roadmap for developing effective multimodal interventions.
Key words:
Mycobacterium abscessus
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