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oai:repisalud.isciii.es:20.500.12105/163422024-11-28T17:39:44Zcom_20.500.12105_2052com_20.500.12105_2051com_20.500.12105_15322col_20.500.12105_19609col_20.500.12105_16961col_20.500.12105_16987

00925njm 22002777a 4500 dc de la Torre-Tarazona, Humberto Erick author González-Robles, Alba author Cascajero Díaz, Almudena author Jiménez Santana, Paloma author Miró, José María author Sánchez-Palomino, Sonsoles author Alcamí, José author Buzón, Maria José author García-Pérez, Javier author Hospital Clinic HIV Investigators author 2023-02 The presence of neutralizing antibodies (NAbs) is a major correlate of protection for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Thus, different in vitro pseudoviruses-based assays have been described to detect NAbs against SARS-CoV-2. However, the determination of NAbs against SARS-CoV-2 in people living with HIV (PLWH) through HIV-based pseudoparticles could be influenced by cross-neutralization activity or treatment, impeding accurate titration of NAbs. Two assays were compared using replication-defective HIV or VSV-based particles pseudotyped with SARS-CoV-2 spike to measure NAbs in COVID-19-recovered and COVID-19-naïve PLWH. The assay based on HIV-pseudoparticles displayed neutralization activity in all COVID-19-recovered PLWH with a median neutralizing titer 50 (NT50) of 1417.0 (interquartile range [IQR]: 450.3-3284.0), but also in 67% of COVID-19-naïve PLWH (NT50: 631.5, IQR: 16.0-1535.0). Regarding VSV-pseudoparticles system, no neutralization was observed in COVID-19-naïve PLWH as expected, whereas in comparison with HIV-pseudoparticles assay lower neutralization titers were measured in 75% COVID-19-recovered PLWH (NT50: 100.5; IQR: 20.5-1353.0). Treatment with integrase inhibitors was associated with inaccurate increase in neutralization titers when HIV-based pseudoparticles were used. IgG purification and consequent elimination of drugs from samples avoided the interference with retroviral cycle and corrected the lack of specificity observed in HIV-pseudotyped assay. This study shows methodological alternatives based on pseudoviruses systems to determine specific SARS-CoV-2 neutralization titers in PLWH. J Med Virol. 2023 Feb;95(2):e28543. 10.1002/jmv.28543 1096-9071 Journal of medical virology 36727646 http://hdl.handle.net/20.500.12105/16342 HIV‐1 Neutralization Pseudoviruses SARS-CoV-2 Treatment with integrase inhibitors alters SARS-CoV-2 neutralization levels measured with HIV-based pseudotypes in people living with HIV