» Articles » PMID: 38483384

SARS-CoV-2 Vaccine-Elicited Immunity After B Cell Depletion in Multiple Sclerosis

Abstract

The impact of B cell deficiency on the humoral and cellular responses to SARS-CoV2 mRNA vaccination remains a challenging and significant clinical management question. We evaluated vaccine-elicited serological and cellular responses in 1) healthy individuals who were pre-exposed to SARS-CoV-2 (n = 21), 2) healthy individuals who received a homologous booster (mRNA, n = 19; or Novavax, n = 19), and 3) persons with multiple sclerosis on B cell depletion therapy (MS-αCD20) receiving mRNA homologous boosting (n = 36). Pre-exposure increased humoral and CD4 T cellular responses in immunocompetent individuals. Novavax homologous boosting induced a significantly more robust serological response than mRNA boosting. MS-α CD20 had an intact IgA mucosal response and an enhanced CD8 T cell response to mRNA boosting compared with immunocompetent individuals. This enhanced cellular response was characterized by the expansion of only effector, not memory, T cells. The enhancement of CD8 T cells in the setting of B cell depletion suggests a regulatory mechanism between B and CD8 T cell vaccine responses.

References
1.
Bates T, McBride S, Leier H, Guzman G, Lyski Z, Schoen D . Vaccination before or after SARS-CoV-2 infection leads to robust humoral response and antibodies that effectively neutralize variants. Sci Immunol. 2022; 7(68):eabn8014. PMC: 8939472. DOI: 10.1126/sciimmunol.abn8014. View

2.
B Gilbert P, Donis R, Koup R, Fong Y, Plotkin S, Follmann D . A Covid-19 Milestone Attained - A Correlate of Protection for Vaccines. N Engl J Med. 2022; 387(24):2203-2206. DOI: 10.1056/NEJMp2211314. View

3.
Wratil P, Stern M, Priller A, Willmann A, Almanzar G, Vogel E . Three exposures to the spike protein of SARS-CoV-2 by either infection or vaccination elicit superior neutralizing immunity to all variants of concern. Nat Med. 2022; 28(3):496-503. DOI: 10.1038/s41591-022-01715-4. View

4.
Schultz J, McCarthy M, Rester C, Sabourin K, Annen K, DomBourian M . Development and Validation of a Multiplex Microsphere Immunoassay Using Dried Blood Spots for SARS-CoV-2 Seroprevalence: Application in First Responders in Colorado, USA. J Clin Microbiol. 2021; 59(6). PMC: 8315929. DOI: 10.1128/JCM.00290-21. View

5.
Garcia-Beltran W, Denis K, Hoelzemer A, Lam E, Nitido A, Sheehan M . mRNA-based COVID-19 vaccine boosters induce neutralizing immunity against SARS-CoV-2 Omicron variant. Cell. 2022; 185(3):457-466.e4. PMC: 8733787. DOI: 10.1016/j.cell.2021.12.033. View