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HIV-1 Infection Impairs CD16 and CD35 Mediated Opsonophagocytosis of Mycobacterium tuberculosis by Human Neutrophils

Bangani, N; Nakiwala, J; Martineau, AR; Wilkinson, RJ; Wilkinson, KA; Lowe, DM; (2016) HIV-1 Infection Impairs CD16 and CD35 Mediated Opsonophagocytosis of Mycobacterium tuberculosis by Human Neutrophils. JAIDS Journal of Acquired Immune Deficiency Syndromes , 73 (3) pp. 263-267. 10.1097/QAI.0000000000001103. Green open access

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Abstract

Using a flow cytometric assay, we investigated neutrophil-Mycobacterium tuberculosis opsonophagocytosis and the impact of HIV-1-infected serum on this process. The mean (±SD) percentage of neutrophils internalizing bacilli after 30 minutes incubation was significantly reduced by pretreatment with anti-CD16 (18.2% ± 8.1%, P < 0.001) or anti-CD35 antibody (23.2% ± 10.6%, P < 0.05) versus anti-CD4 controls (29.9% ± 8.1%). Blocking CD88 or CD11a did not affect internalization. Using heat-inactivated serum, maximal internalization was lower using HIV-1-infected serum versus HIV-1-uninfected. Using non-heat-inactivated serum, internalization decreased more rapidly with sequential dilutions of HIV-1-infected versus HIV-1-uninfected serum. CD16 and CD35 are important for neutrophil internalization of M. tuberculosis, whereas HIV-1 infection adversely affects opsonophagocytosis.

Type: Article
Title: HIV-1 Infection Impairs CD16 and CD35 Mediated Opsonophagocytosis of Mycobacterium tuberculosis by Human Neutrophils
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1097/QAI.0000000000001103
Publisher version: http://dx.doi.org/10.1097/QAI.0000000000001103
Language: English
Additional information: This is an open access article distributed under the Creative Commons Attribution License 4.0 (CCBY) (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Keywords: neutrophil, phagocytosis, opsonization, tuberculosis, mycobacteria, HIV
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Infection and Immunity
URI: https://discovery.ucl.ac.uk/id/eprint/1539187
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