Abstract
Background: Much remains unknown regarding the response of the immune system to severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) vaccination. Methods: We employed circulating cell-free DNA (cfDNA) to assess the turnover of specific immune cell types following administration of the Pfizer/BioNTech vaccine. Findings: The levels of B cell cfDNA after the primary dose correlated with development of neutralizing antibodies and memory B cells after the booster, revealing a link between early B cell turnover—potentially reflecting affinity maturation—and later development of effective humoral response. We also observed co-elevation of B cell, T cell, and monocyte cfDNA after the booster, underscoring the involvement of innate immune cell turnover in the development of humoral and cellular adaptive immunity. Actual cell counts remained largely stable following vaccination, other than a previously demonstrated temporary reduction in neutrophil and lymphocyte counts. Conclusions: Immune cfDNA dynamics reveal the crucial role of the primary SARS-CoV-2 vaccine in shaping responses of the immune system following the booster vaccine. Funding: This work was supported by a generous gift from Shlomo Kramer. Supported by grants from Human Islet Research Network (HIRN UC4DK116274 and UC4DK104216 to R.S. and Y.D.), Ernest and Bonnie Beutler Research Program of Excellence in Genomic Medicine, The Alex U Soyka Pancreatic Cancer Fund, The Israel Science Foundation, the Waldholtz/Pakula family, the Robert M. and Marilyn Sternberg Family Charitable Foundation, the Helmsley Charitable Trust, Grail, and the DON Foundation (to Y.D.). Y.D. holds the Walter and Greta Stiel Chair and Research Grant in Heart Studies. I.F.-F. received a fellowship from the Glassman Hebrew University Diabetes Center.
Original language | English |
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Pages (from-to) | 468-480.e5 |
Journal | Med |
Volume | 3 |
Issue number | 7 |
DOIs | |
State | Published - 8 Jul 2022 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2022 Elsevier Inc.
Funding
We thank Idit Shiff and Abed Nasseredin from the Core Research Facility at The Hebrew University Faculty of Medicine for their support in sequencing analysis, and Noa Makhervax and Dr Lilach Gavish for help in coordinating the effort. This work was supported by a generous gift from Shlomo Kramer . Supported by grants from Human Islet Research Network ( HIRN UC4DK116274 and UC4DK104216 to R.S and Y.D.); Ernest and Bonnie Beutler Research Program of Excellence in Genomic Medicine, The Alex U Soyka Pancreatic Cancer Fund , The Israel Science Foundation , the Waldholtz/Pakula family , the Robert M. and Marilyn Sternberg Family Charitable Foundation , the Helmsley Charitable Trust , Grail, and the DON Foundation . Y.D. holds the Walter and Greta Stiel Chair and Research Grant in Heart Studies. I.F.-F. received a fellowship from the Glassman Hebrew University Diabetes Center . We thank Idit Shiff and Abed Nasseredin from the Core Research Facility at The Hebrew University Faculty of Medicine for their support in sequencing analysis, and Noa Makhervax and Dr Lilach Gavish for help in coordinating the effort. This work was supported by a generous gift from Shlomo Kramer. Supported by grants from Human Islet Research Network (HIRN UC4DK116274 and UC4DK104216 to R.S and Y.D.); Ernest and Bonnie Beutler Research Program of Excellence in Genomic Medicine, The Alex U Soyka Pancreatic Cancer Fund, The Israel Science Foundation, the Waldholtz/Pakula family, the Robert M. and Marilyn Sternberg Family Charitable Foundation, the Helmsley Charitable Trust, Grail, and the DON Foundation. Y.D. holds the Walter and Greta Stiel Chair and Research Grant in Heart Studies. I.F.-F. received a fellowship from the Glassman Hebrew University Diabetes Center. Conceptualization, Y.D. and I.F.-F.; investigation, I.F.-F. S.P. M.B. E.O.-D. O.A. N.M. M.S. E.F. R.A. and O.F.; project administration, R.B.-A. A.P. D.N. B.-L.O. O.F. Z.D. A.K. J.M. D.S. Y.R. A.T. and L.R.; supervision, Y.D. R.S. B.G. D.W. Y.T. and S.S.S.-O.; writing – original draft, Y.D. and I.F.-F.; writing – review & editing, R.S. B.G. A.K. D.W. Y.T. and S.S.S.-O. I.F.-F. and R.A. performed statistical analyses. Y.D. I.F.-F. and R.S. had unrestricted access to all data. Y.D. and I.F.-F. prepared the first draft of the manuscript, which was reviewed and edited by all other authors. All authors agreed to submit the manuscript, read and approved the final draft, and take full responsibility for its content, including the accuracy of the data and statistical analysis. I.F.-F. B.G. R.S. and Y.D. have filed patents related to DNA methylation markers.
Funders | Funder number |
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Alex U Soyka Pancreatic Cancer Fund | |
Core Research Facility | |
Glassman Hebrew University Diabetes Center | |
Robert M. and Marilyn Sternberg Family Charitable Foundation | |
Waldholtz/Pakula family | |
National Institute of Diabetes and Digestive and Kidney Diseases | UC4DK104216 |
Leona M. and Harry B. Helmsley Charitable Trust | |
Human Islet Research Network | HIRN UC4DK116274 |
Israel Science Foundation | |
Stichting Diabetes Onderzoek Nederland |
Keywords
- BNT162b2
- DNA methylation
- SARS-CoV-2
- Translation to patients
- cfDNA
- liquid biopsy
- mRNA vaccine
- memory B-cell
- neutralizing antibody
- tissue dynamics