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Immune checkpoint inhibitors increase T cell immunity during SARS-CoV-2 infection

Abstract : The COVID-19 pandemic has spread worldwide, yet the role of antiviral T cell immunity during infection and the contribution of immune checkpoints remain unclear. By prospectively following a cohort of 292 patients with melanoma, half of which treated with immune checkpoint inhibitors (ICIs), we identified 15 patients with acute or convalescent COVID-19 and investigated their transcriptomic, proteomic, and cellular profiles. We found that ICI treatment was not associated with severe COVID-19 and did not alter the induction of inflammatory and type I interferon responses. In-depth phenotyping demonstrated expansion of CD8 effector memory T cells, enhanced T cell activation, and impaired plasmablast induction in ICI-treated COVID-19 patients. The evaluation of specific adaptive immunity in convalescent patients showed higher spike (S), nucleoprotein (N), and membrane (M) antigen-specific T cell responses and similar induction of spike-specific antibody responses. Our findings provide evidence that ICI during COVID-19 enhanced T cell immunity without exacerbating inflammation.
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https://hal-pasteur.archives-ouvertes.fr/pasteur-03334080
Contributor : Marie-Christine Vougny <>
Submitted on : Friday, September 3, 2021 - 2:26:50 PM
Last modification on : Monday, September 6, 2021 - 12:49:03 PM

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Nader Yatim, Jeremy Boussier, Pauline Tetu, Nikaïa Smith, Timothée Bruel, et al.. Immune checkpoint inhibitors increase T cell immunity during SARS-CoV-2 infection. Science Advances , American Association for the Advancement of Science (AAAS), 2021, 7 (34), pp.eabg4081. ⟨10.1126/sciadv.abg4081⟩. ⟨pasteur-03334080⟩

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