Validation of digital droplet PCR assays for cell-associated HIV-1 DNA, HIV-1 2-LTR circle, and HIV-1 unspliced RNA for clinical studies in HIV-1 cure research

Copyright © 2023. Published by Elsevier B.V..

BACKGROUND: Cell-associated HIV-1 DNA, HIV-1 2-LTR circle, and HIV-1 unspliced RNA (usRNA) are important virological parameters for monitoring HIV-1 persistence and activation of latent HIV-1. Assays fully validated by CLIA and/or GCLP standards are needed for future clinical trials that seek to evaluate treatments directed towards HIV-1 cure.

OBJECTIVES: To determine performance characteristics of sensitive, moderate-throughput, digital droplet PCR (ddPCR) assays for cell-associated HIV-1 DNA, HIV-1 2-LTR circle, and HIV-1 usRNA that can detect a broad range of HIV-1 M-group subtypes.

STUDY DESIGN: To evaluate linearity, limit of detection, precision, and accuracy of each assay, contrived specimens were analyzed in a background of uninfected PBMC. Detection breadth was evaluated by in silico analysis of primer and probes sets and analysis of material harvested from PBMC infected in vitro with various HIV-1 subtypes. A cohort of clinical specimens from viremic and virologically suppressed individuals was analyzed to demonstrate applicability to clinical research.

RESULTS: The empirically determined limit of detection of these assays was 29, 7, and 60 copies per million PBMC for HIV-1 DNA, HIV-1 2-LTR circle, and HIV-1 usRNA, respectively. The assays detect a broad range of HIV-1 M-group subtypes. Finally, analysis of clinical specimens demonstrate that these assays can detect low levels of cell-associated HIV-1 DNA, HIV-1 usRNA, and HIV-1 2-LTR circle and correlate with clinical histories and viral loads of untreated and antiretroviral treated individuals.

CONCLUSIONS: We report the clinical validation of three HIV reservoir assays with broad HIV-1 coverage for future cure studies.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:170

Enthalten in:

Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology - 170(2024) vom: 19. Feb., Seite 105632

Sprache:

Englisch

Beteiligte Personen:

Reed, Jonathan [VerfasserIn]
Kwak, Ginger [VerfasserIn]
Piliper, Eli A [VerfasserIn]
Degli-Angeli, Emily J [VerfasserIn]
Goecker, Erin A [VerfasserIn]
Greninger, Alexander L [VerfasserIn]

Links:

Volltext

Themen:

2-LTR circle
Clinical validation
DNA, Viral
Digital droplet PCR
HIV-1 DNA
HIV-1 reservoir
HIV-1 unspliced RNA
Journal Article
RNA, Viral
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 22.01.2024

Date Revised 02.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.jcv.2023.105632

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM366043501