Kessing, CF;
Spudich, S;
Valcour, V;
Cartwright, P;
Chalermchai, T;
Fletcher, JLK;
Takata, H;
... Trautmann, L; + view all
(2017)
High Number of Activated CD8(+) T Cells Targeting HIV Antigens Are Present in Cerebrospinal Fluid in Acute HIV Infection.
JAIDS: Journal of Acquired Immune Deficiency Syndromes
, 75
(1)
pp. 108-117.
10.1097/QAI.0000000000001301.
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Abstract
BACKGROUND: Central nervous system (CNS) infiltration by CD8+ T cells is associated with neuroinflammation in many neurodegenerative diseases, including HIV-associated dementia. However, the role of CD8+ T cells in the CNS during acute HIV infection (AHI) is unknown. METHODS: We analyzed the phenotype, gene expression, T cell receptor (TCR) repertoire, and HIV specificity of CD8+ T cells in cerebrospinal fluid (CSF) of a unique cohort captured during the earliest stages of AHI (n = 26), chronic (n = 23), and uninfected (n = 8). RESULTS: CSF CD8+ T cells were elevated in AHI compared with uninfected controls. The frequency of activated CSF CD8+ T cells positively correlated to CSF HIV RNA and to markers of CNS inflammation. In contrast, activated CSF CD8+ T cells during chronic HIV infection were associated with markers of neurological injury and microglial activation. CSF CD8+ T cells in AHI exhibited increased functional gene expression profiles associated with CD8+ T cells effector function, proliferation, and TCR signaling, a unique restricted TCR Vbeta repertoire and contained HIV-specific CD8+ T cells directed to unique HIV epitopes compared with the periphery. CONCLUSIONS: These results suggest that CSF CD8+ T cells in AHI expanding in the CNS are functional and directed against HIV antigens. These cells could thus play a beneficial role protective of injury seen in chronic HIV infection if combination antiretroviral therapy is initiated early.
| Type: | Article |
|---|---|
| Title: | High Number of Activated CD8(+) T Cells Targeting HIV Antigens Are Present in Cerebrospinal Fluid in Acute HIV Infection |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1097/QAI.0000000000001301 |
| Publisher version: | http://dx.doi.org/10.1097/QAI.0000000000001301 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | HIV, cytotoxic T lymphocytes, HIV-specific CD8+ T cells, neuroinflammation, HIV-associated neurocognitive disorders |
| 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 Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Neurodegenerative Diseases |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1550494 |
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