Characterizing the cellular and molecular variabilities of peripheral immune cells in healthy recipients of BBIBP-CorV inactivated SARS-CoV-2 vaccine by single-cell RNA sequencing
Open Access
- 9 May 2023
- journal article
- research article
- Published by Taylor & Francis Ltd in Emerging Microbes & Infections
- Vol. 12 (1), e2187245
- https://doi.org/10.1080/22221751.2023.2187245
Abstract
Over 3 billion doses of inactivated vaccines for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have been administered globally. However, our understanding of the immune cell functional transcription and T cell receptor (TCR)/B cell receptor (BCR) repertoire dynamics following inactivated SARS-CoV-2 vaccination remains poorly understood. Here, we performed single-cell RNA and TCR/BCR sequencing on peripheral blood mononuclear cells at four time points after immunization with the inactivated SARS-CoV-2 vaccine BBIBP-CorV. Our analysis revealed an enrichment of monocytes, central memory CD4+ T cells, type 2 helper T cells and memory B cells following vaccination. Single-cell TCR-seq and RNA-seq comminating analysis identified a clonal expansion of CD4+ T cells (but not CD8+ T cells) following a booster vaccination that corresponded to a decrease in the TCR diversity of central memory CD4+ T cells and type 2 helper T cells. Importantly, these TCR repertoire changes and CD4+ T cell differentiation were correlated with the biased VJ gene usage of BCR and the antibody-producing function of B cells post-vaccination. Finally, we compared the functional transcription and repertoire dynamics in immune cells elicited by vaccination and SARS-CoV-2 infection to explore the immune responses under different stimuli. Our data provide novel molecular and cellular evidence for the CD4+ T cell-dependent antibody response induced by inactivated vaccine BBIBP-CorV. This information is urgently needed to develop new prevention and control strategies for SARS-CoV-2 infection. (ClinicalTrials.gov Identifier: NCT04871932). Trial registration: ClinicalTrials.gov identifier: NCT04871932..Keywords
Funding Information
- National Key R&D Program of China (2021YFC2502300, 2022YFE0103500)
- National Natural Science Foundation of China (81500221,82071852 and 82003013)
- Innovative Research Team of High-Level Local Universities in Shanghai (SHSMU-ZDCX20212100, SHSMU-ZDCX20210601)
- Shanghai Clinical Research Center for Aging and Medicine (19MC1910500)
- Science and Technology Commission of Shanghai Municipality (22QA1405400, 22DZ2292400)
- Shanghai Municipal Health Commission (2022JC013)
- Shanghai Cancer Institute (ZZ-20-22SYL)
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