Perturbations of the T-cell receptor repertoire in response to SARS-CoV-2 in immunocompetent and immunocompromised individuals - 05/06/24
Abstract |
Background |
Functional T-cell responses are essential for virus clearance and long-term protection after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, whereas certain clinical factors, such as older age and immunocompromise, are associated with worse outcome.
Objective |
We sought to study the breadth and magnitude of T-cell responses in patients with coronavirus disease 2019 (COVID-19) and in individuals with inborn errors of immunity (IEIs) who had received COVID-19 mRNA vaccine.
Methods |
Using high-throughput sequencing and bioinformatics tools to characterize the T-cell receptor β repertoire signatures in 540 individuals after SARS-CoV-2 infection, 31 IEI recipients of COVID-19 mRNA vaccine, and healthy controls, we quantified HLA class I– and class II–restricted SARS-CoV-2–specific responses and also identified several HLA allele–clonotype motif associations in patients with COVID-19, including a subcohort of anti–type 1 interferon (IFN-1)-positive patients.
Results |
Our analysis revealed that elderly patients with COVID-19 with critical disease manifested lower SARS-CoV-2 T-cell clonotype diversity as well as T-cell responses with reduced magnitude, whereas the SARS-CoV-2–specific clonotypes targeted a broad range of HLA class I– and class II–restricted epitopes across the viral proteome. The presence of anti–IFN-I antibodies was associated with certain HLA alleles. Finally, COVID-19 mRNA immunization induced an increase in the breadth of SARS-CoV-2–specific clonotypes in patients with IEIs, including those who had failed to seroconvert.
Conclusions |
Elderly individuals have impaired capacity to develop broad and sustained T-cell responses after SARS-CoV-2 infection. Genetic factors may play a role in the production of anti–IFN-1 antibodies. COVID-19 mRNA vaccines are effective in inducing T-cell responses in patients with IEIs.
El texto completo de este artículo está disponible en PDF.Key words : COVID-19, SARS-CoV-2, T-cell receptor repertoire, inborn errors of immunity, COVID-19 mRNA vaccine, anti–type 1 interferon antibodies
Abbreviations used : CDR3, COVID-19, GLIPH2, HCW, HTS, IEI, IFN-1, IQR, MIRA, N, ORF, RBD, S, SARS-CoV-2, TCR, TRB
Esquema
Vol 153 - N° 6
P. 1655-1667 - juin 2024 Regresar al númeroBienvenido a EM-consulte, la referencia de los profesionales de la salud.