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Monocyte/Macrophage-Mediated Innate Immunity in HIV-1 Infection:From early Response to Late Dysregulation and Links to Cardiovascular Diseases Onset

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Virologica Sinica 2021年第4期36卷 565-576页

作者： eman Teer danzil e.joseph Richard H.Glashoff M.Faadiel essop Centre for Cardio-metabolic Research in Africa(CARMA) Department of Physiological SciencesStellenbosch UniversityStellenbosch 7600South Africa Division of Medical Microbiology&Immunology Department of PathologyStellenbosch University and NHLSCape Town 7505South Africa

Although monocytes and macrophages are key mediators of the innate immune system,the focus has largely been on the role of the adaptive immune system in the context of human immunodeficiency virus(HIV)*** more attention and research work regarding the innate immune system-especially the role of monocytes and macrophages during early HIV-1 infection-is *** monocytes and tissue macrophages are both susceptible targets of HIV-1 infection,and the early host response can determine whether the nature of the infection becomes pathogenic or *** example,monocytes and macrophages can contribute to the HIV reservoir and viral persistence,and influence the initiation/extension of immune activation and chronic *** the expansion of monocyte subsets(classical,intermediate and non-classical)provide an increased understanding of the crucial role they play in terms of chronic inflammation and also by increasing the risk of coagulation during HIV-1 *** review discusses the role of monocytes and macrophages during HIV-1 pathogenesis,starting from the early response to late dysregulation that occurs as a result of persistent immune activation and chronic *** changes are also linked to downstream targets such as increased coagulation and the onset of cardiovascular diseases.

关键词： Monocytes Human immunodeficiency virus(HIV) Persistent immune activation Coagulation Cardiovascular diseases(CVD)

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expansion of GARP-expressing CD4^(+)CD25^(-)FoxP3^(+)T Cells and SATB1Association with Activation and Coagulation in Immune Compromised HIV-1-Infected Individuals in South Africa

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Virologica Sinica 2021年第5期36卷 1133-1143页

作者： eman Teer danzil e.joseph Leanne Dominick Richard H.Glashoff M.Faadiel essop Centre for Cardio-Metabolic Research in Africa(CARMA) Department of Physiological SciencesStellenbosch UniversityStellenbosch 7600South Africa Division of Medical Microbiology and Immunology Department of PathologyStellenbosch University and NHLSCape Town 7505South Africa

Although antiretroviral treatment lowers the burden of human immunodeficiency virus(HIV)-related disease,it does not always result in immunological *** manifests as persistent chronic inflammation,immune activation or exhaustion that can promote the onset of *** the exact function of regulatory T(Treg)cells in HIV remains unclear,this cross-sectional study investigated three expression markers(Forkhead box protein P3[FOXP3],glycoprotein A repetitions predominant[GARP],special AT-rich sequence binding protein 1[SATB1])and compared their expansion between CD4^(+)CD25^(-)and CD4^(+)CD25^(++)T ***-matched study subjects were recruited(Western Cape,South Africa)and sub-divided:HIV-negative subjects(n=12),HIV-positive na(i|")ve treated(n=22),HIV-positive treated based on CD4 count cells/μL(CD4>500 and CD4eated based on viral load(VL)copies/mL(VL1000)(n=34).Markers of immune activation(CD38)and coagulation(CD142)on T cells(CD8)were assessed by flow cytometry together with FOXP3,GARP and SATB1 expression on CD4^(+)CD25^(-)and CD4^(+)CD25^(++)T *** levels of interleukin-10(IL-10;anti-inflammatory marker),IL-6(inflammatory marker)and D-dimer(coagulation marker)were *** study revealed three major findings in immuno-compromised patients with virological failure(CD41000):(1)the expansion of the unconventional Treg cell subset(CD4^(+)CD25^(-)FOXP3^(+))is linked with disease progression markers;(2)increased GARP expression in the CD4^(+)CD25^(-)and CD4^(+)CD25^(++)subsets;and(3)the identification of a strong link between CD4^(+)CD25^(-)SATB1+cells and markers of immune activation(CD8^(+)CD38^(+))and coagulation(CD8^(+)CD142^(+)and D-dimer).

关键词： Human immunodeficiency virus(HIV) Regulatory T cells(Treg) Immune activation Progression markers Glycoprotein A repetitions predominant(GARP) Forkhead box protein P3(FOXP3)

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