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COVID-19 Vaccination Alters NK Cell Dynamics and Transiently Reduces HBsAg Titers Among Patients With Chronic Hepatitis B

Abstract

Coronavirus disease 2019 (COVID-19) vaccination may non-specifically alter the host immune system. This study aimed to evaluate the effect of COVID-19 vaccination on hepatitis B surface Ag (HBsAg) titer and host immunity in chronic hepatitis B (CHB) patients. Consecutive 2,797 CHB patients who had serial HBsAg measurements during antiviral treatment were included in this study. Changes in the HBsAg levels after COVID-19 vaccination were analyzed. The dynamics of NK cells following COVID-19 vaccination were also examined using serial blood samples collected prospectively from 25 healthy volunteers. Vaccinated CHB patients (n=2,329) had significantly lower HBsAg levels 1-30 days post-vaccination compared to baseline (median, -21.4 IU/ml from baseline), but the levels reverted to baseline by 91-180 days (median, -3.8 IU/ml). The velocity of the HBsAg decline was transiently accelerated within 30 days after vaccination (median velocity: -0.06, -0.39, and -0.04 log IU/ml/year in pre-vaccination period, days 1-30, and days 31-90, respectively). In contrast, unvaccinated patients (n=468) had no change in HBsAg levels. Flow cytometric analysis showed that the frequency of NK cells expressing NKG2A, an NK inhibitory receptor, significantly decreased within 7 days after the first dose of COVID-19 vaccine (median, -13.1% from baseline; p<0.001). The decrease in the frequency of NKG2A NK cells was observed in the CD56CD16 NK cell population regardless of type of COVID-19 vaccine. COVID-19 vaccination leads to a rapid, transient decline in HBsAg titer and a decrease in the frequency of NKG2A NK cells.

References
1.
De Maria A, Bozzano F, Cantoni C, Moretta L . Revisiting human natural killer cell subset function revealed cytolytic CD56(dim)CD16+ NK cells as rapid producers of abundant IFN-gamma on activation. Proc Natl Acad Sci U S A. 2010; 108(2):728-32. PMC: 3021076. DOI: 10.1073/pnas.1012356108. View

2.
Andre P, Denis C, Soulas C, Bourbon-Caillet C, Lopez J, Arnoux T . Anti-NKG2A mAb Is a Checkpoint Inhibitor that Promotes Anti-tumor Immunity by Unleashing Both T and NK Cells. Cell. 2018; 175(7):1731-1743.e13. PMC: 6292840. DOI: 10.1016/j.cell.2018.10.014. View

3.
Chung G, Kim J, Shin H, Hong J, Hur M, Cho H . Correlation between Results of Semi-Quantitative and Quantitative Tests for Hepatitis B Virus Surface Antigen among Patients Achieving Viral Suppression with Antiviral Treatment. Diagnostics (Basel). 2022; 12(7). PMC: 9317496. DOI: 10.3390/diagnostics12071757. View

4.
Dagan N, Barda N, Kepten E, Miron O, Perchik S, Katz M . BNT162b2 mRNA Covid-19 Vaccine in a Nationwide Mass Vaccination Setting. N Engl J Med. 2021; 384(15):1412-1423. PMC: 7944975. DOI: 10.1056/NEJMoa2101765. View

5.
Tong S, Liu G, Li M, Li X, Liu Q, Peng H . Natural killer cell activation contributes to hepatitis B viral control in a mouse model. Sci Rep. 2017; 7(1):314. PMC: 5428210. DOI: 10.1038/s41598-017-00387-2. View