2023
DOI: 10.1016/j.isci.2022.105862
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Attenuated humoral responses in HIV after SARS-CoV-2 vaccination linked to B cell defects and altered immune profiles

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Cited by 14 publications
(26 citation statements)
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“…In line with this, we observed a correlation between the size of the B‐cell population and serological output (both total anti‐spike and neutralisation titres) at multiple post‐vaccine timepoints in agreement with previous findings 12,38,39 . However, due to the low levels of total B cells found in these individuals, it was not feasible to explore B‐cell phenotypes which may link to weaker/absent antibody responses as performed in studies of other immunocompromised patients 30 . Our analysis suggests that the remarkable increase in both seroconversion and antibody neutralisation after a fourth vaccine dose is driven by a higher CD19+ cell frequency rather than the number of vaccine doses.…”
Section: Discussionsupporting
confidence: 90%
See 1 more Smart Citation
“…In line with this, we observed a correlation between the size of the B‐cell population and serological output (both total anti‐spike and neutralisation titres) at multiple post‐vaccine timepoints in agreement with previous findings 12,38,39 . However, due to the low levels of total B cells found in these individuals, it was not feasible to explore B‐cell phenotypes which may link to weaker/absent antibody responses as performed in studies of other immunocompromised patients 30 . Our analysis suggests that the remarkable increase in both seroconversion and antibody neutralisation after a fourth vaccine dose is driven by a higher CD19+ cell frequency rather than the number of vaccine doses.…”
Section: Discussionsupporting
confidence: 90%
“…Strikingly, the frequency of CD4 + and CD8 + T‐cell populations did not correlate with stronger or more neutralising antibody responses (Figure 3A; Table S5) across any timepoints. Nor was any association found between naïve CD8 + T‐cell populations and lower neutralising titres (Figure 3A,F; Table S5) as has previously been reported for other immunocompromised vaccines in subsets of this population, which are postulated to enable stronger functional T‐cell responses 26,30 . Similarly, no association was found between the frequency of circulating T FH or T REG cells (Figure 3A,E,G; Tables S3 and S4) and binding or neutralising antibodies.…”
Section: Resultssupporting
confidence: 52%
“…Previous studies have shown that lower CD4 + T cell count has been linked to lower serological responses among PLWH (42). Consistent with several prior studies (9,43,44), our study also indicated that PLWH < 200 subgroup in cohort 1 (3-month interval) showed a weaker humoral immune response to inactivated COVID-19 vaccination, comparing to PLWH CD4 ≥ 200 subgroup (P < 0.05). Interestingly, the gap in NAb levels and seroconversion rates disappeared as extending the dosing interval to 5-month in PLWH < 200 and PLWH ≥ 200 subgroups.…”
Section: Discussionsupporting
confidence: 91%
“…Previous studies have shown that the immunological memory to SARS‐CoV‐2 persists for a long time 15,16 . A recent study reported attenuated MBC responses in PLWH after mRNA or adenovirus vector vaccination 17 . However, the dynamics of SARS‐CoV‐2‐specific MBCs in PLWH after primary and booster inactivated vaccinations remain unknown.…”
Section: Introductionmentioning
confidence: 99%