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Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cell+Rep+Med 2021 ; 2 (4): 100228 Nephropedia Template TP
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Long-term persistence of RBD(+) memory B cells encoding neutralizing antibodies in SARS-CoV-2 infection #MMPMID33748788
Abayasingam A; Balachandran H; Agapiou D; Hammoud M; Rodrigo C; Keoshkerian E; Li H; Brasher NA; Christ D; Rouet R; Burnet D; Grubor-Bauk B; Rawlinson W; Turville S; Aggarwal A; Stella AO; Fichter C; Brilot F; Mina M; Post JJ; Hudson B; Gilroy N; Dwyer D; Sasson SC; Tea F; Pilli D; Kelleher A; Tedla N; Lloyd AR; Martinello M; Bull RA
Cell Rep Med 2021[Apr]; 2 (4): 100228 PMID33748788show ga
Considerable concerns relating to the duration of protective immunity against severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) exist, with evidence of antibody titers declining rapidly after infection and reports of reinfection. Here, we monitor the antibody responses against SARS-CoV-2 receptor-binding domain (RBD) for up to 6 months after infection. While antibody titers are maintained, approximately 13% of the cohort's neutralizing responses return to background. However, encouragingly, in a selected subset of 13 participants, 12 have detectable RBD-specific memory B cells and these generally are increasing out to 6 months. Furthermore, we are able to generate monoclonal antibodies with SARS-CoV-2 neutralizing capacity from these memory B cells. Overall, our study suggests that the loss of neutralizing antibodies in plasma may be countered by the maintenance of neutralizing capacity in the memory B cell repertoire.