Alveolar macrophages from persons with HIV mount impaired TNF signaling networks to M. tuberculosis infection.

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Tác giả: Prashant Bajpai, Sushma K Cribbs, Stanzin Dawa, Hedwin Kitdorlang Dkhar, Ana Beatriz Enriquez, Chris C Ibegbu, Khanyisile Kgoadi, Jyothi Rengarajan

Ngôn ngữ: eng

Ký hiệu phân loại: 780.92 Persons associated with music

Thông tin xuất bản: England : Nature communications , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 686227

People living with HIV (PLWH) have an increased risk for developing tuberculosis after M. tuberculosis infection, despite anti-retroviral therapy (ART). To delineate the underlying mechanisms, we conducted single cell transcriptomics on bronchoalveolar lavage cells from PLWH on ART and HIV uninfected healthy controls infected with M. tuberculosis ex vivo. We identify an M1-like proinflammatory alveolar macrophage subset that sequentially acquires TNF signaling capacity in controls but not in PLWH. Cell-cell communication analyses reveal interactions between M1-like macrophages and effector memory T cells within TNF superfamily, chemokine, and costimulatory networks in the airways of controls. These interaction networks were lacking in PLWH infected with M. tuberculosis, where anti-inflammatory M2-like alveolar macrophages and T regulatory cells dominated along with dysregulated T cell signatures. Our data support a model in which impaired TNF-TNFR signaling, M2-like alveolar macrophages and aberrant macrophage-T cell crosstalk, lead to ineffective immunity to M. tuberculosis in PLWH on ART.
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