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Deprecated: Implicit conversion from float 269.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Sci+Immunol 2021 ; 6 (61): ä Nephropedia Template TP
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CD8(+) T cells specific for conserved coronavirus epitopes correlate with milder disease in COVID-19 patients #MMPMID34210785
Mallajosyula V; Ganjavi C; Chakraborty S; McSween AM; Pavlovitch-Bedzyk AJ; Wilhelmy J; Nau A; Manohar M; Nadeau KC; Davis MM
Sci Immunol 2021[Jul]; 6 (61): ä PMID34210785show ga
A central feature of the SARS-CoV-2 pandemic is that some individuals become severely ill or die, whereas others have only a mild disease course or are asymptomatic. Here we report development of an improved multimeric alphabeta T cell staining reagent platform, with each maxi-ferritin "spheromer" displaying 12 peptide-MHC complexes. Spheromers stain specific T cells more efficiently than peptide-MHC tetramers and capture a broader portion of the sequence repertoire for a given peptide-MHC. Analyzing the response in unexposed individuals, we find that T cells recognizing peptides conserved amongst coronaviruses are more abundant and tend to have a "memory" phenotype, compared to those unique to SARS-CoV-2. Significantly, CD8(+) T cells with these conserved specificities are much more abundant in COVID-19 patients with mild disease versus those with a more severe illness, suggesting a protective role.