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Lee Y, Grubbs G, Ramelli SC, Levine AR, Bathula A, Saharia K, Purcell M, Singireddy S, Dugan CL, Kirchoff L, Lankford A, Cipriano S, Curto RA, Wu J, Raja K, Kelley E, Herr D, Vannella KM, Ravichandran S, Tang J, Harris A, Sajadi M, Chertow DS, Grazioli A, Khurana S. SARS-CoV-2 mRNA vaccine induced higher antibody affinity and IgG titers against variants of concern in post-partum vs non-post-partum women. EBioMedicine 2022; 77:103940. [PMID: 35301181 PMCID: PMC8920181 DOI: 10.1016/j.ebiom.2022.103940] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/15/2022] [Accepted: 03/01/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Limited knowledge exists in post-partum women regarding durability of SARS-CoV-2 vaccine-induced antibody responses and their neutralising ability against SARS-CoV-2 variants of concern (VOC). METHODS We elucidated longitudinal mRNA vaccination-induced antibody profiles of 13 post-partum and 13 non-post-partum women (control). FINDINGS The antibody neutralisation titres against SARS-CoV-2 WA-1 strain were comparable between post-partum and non-post-partum women and these levels were sustained up to four months post-second vaccination in both groups. However, neutralisation titers declined against several VOCs, including Beta and Delta. Higher antibody binding was observed against SARS-CoV-2 receptor-binding domain (RBD) mutants with key VOC amino acids when tested with post-second vaccination plasma from post-partum women compared with controls. Importantly, post-vaccination plasma antibody affinity against VOCs RBDs was significantly higher in post-partum women compared with controls. INTERPRETATION This study demonstrates that there is a differential vaccination-induced immune responses in post-partum women compared with non-post-partum women, which could help inform future vaccination strategies for these groups. FUNDING The antibody characterisation work described in this manuscript was supported by FDA's Medical Countermeasures Initiative (MCMi) grant #OCET 2021-1565 to S.K and intramural FDA-CBER COVID-19 supplemental funds.
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Affiliation(s)
- Youri Lee
- Division of Viral Products, Center for Biologics Evaluation and Research (CBER), Food and Drug Administration (FDA), 10903 New Hampshire Avenue, Silver Spring, MD 20871, USA
| | - Gabrielle Grubbs
- Division of Viral Products, Center for Biologics Evaluation and Research (CBER), Food and Drug Administration (FDA), 10903 New Hampshire Avenue, Silver Spring, MD 20871, USA
| | - Sabrina C Ramelli
- Critical Care Medicine Department, Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
| | - Andrea R Levine
- Division of Pulmonary and Critical Care, Department of Internal Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Allison Bathula
- Department of Pharmacy, University of Maryland Medical Center, Baltimore, MD, USA
| | - Kapil Saharia
- Division of Infectious Disease, Department of Internal Medicine, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD USA
| | | | | | | | | | - Allison Lankford
- Department of Obstetrics and Gynecology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Sarah Cipriano
- University of Maryland Medical Center, Baltimore, MD USA
| | - Ryan A Curto
- University of Maryland School of Medicine, Baltimore, MD USA
| | - Jocelyn Wu
- University of Maryland School of Medicine, Baltimore, MD USA
| | - Katherine Raja
- University of Maryland School of Medicine, Baltimore, MD USA
| | - Emily Kelley
- University of Maryland Medical Center, Baltimore, MD USA
| | - Daniel Herr
- Department of Medicine, Program in Trauma, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Kevin M Vannella
- Emerging Pathogens Section, Critical Care Medicine Department, Clinical Center, National Institutes of Health, Bethesda, MD, USA; Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Supriya Ravichandran
- Division of Viral Products, Center for Biologics Evaluation and Research (CBER), Food and Drug Administration (FDA), 10903 New Hampshire Avenue, Silver Spring, MD 20871, USA
| | - Juanjie Tang
- Division of Viral Products, Center for Biologics Evaluation and Research (CBER), Food and Drug Administration (FDA), 10903 New Hampshire Avenue, Silver Spring, MD 20871, USA
| | - Anthony Harris
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD USA
| | - Mohammad Sajadi
- Department of Medicine, Baltimore VA Medical Center, Baltimore, MD 21201, USA
| | - Daniel S Chertow
- Emerging Pathogens Section, Critical Care Medicine Department, Clinical Center, National Institutes of Health, Bethesda, MD, USA; Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Alison Grazioli
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - Surender Khurana
- Division of Viral Products, Center for Biologics Evaluation and Research (CBER), Food and Drug Administration (FDA), 10903 New Hampshire Avenue, Silver Spring, MD 20871, USA.
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Plewa MJ, Wagner ED, Kirchoff L, Repetny K, Adams LC, Rayburn AL. The use of single cell gel electrophoresis and flow cytometry to identify antimutagens from commercial soybean by-products. Mutat Res 1998; 402:211-8. [PMID: 9675285 DOI: 10.1016/s0027-5107(97)00299-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Single cell gel electrophoresis (alkaline Comet assay) and flow cytometric methods were combined into an assay that enables the analysis of direct DNA damage and longer-term whole cell clastogenicity in mammalian cells. We employed these techniques to analyze the antimutagenic activity of by-products of commercial soybean processing. At a concentration of 1 mg/ml, the soybean molasses by-product was found to repress 66% of the mutagenic capacity of the direct-acting mutagen 2-acetoxyacetylaminofluorene (2AAAF) in Chinese hamster lung (CHL) cells. At a concentration of 50 microg/ml, fraction PCC (an ethanol extract of soybean molasses) repressed 70% of the genotoxic potency of 500 nM 2AAAF as measured by the Comet assay. Fraction PCC was also effective in protecting CHL cells from 2AAAF-induced clastogenic damage. Using a forward mutation assay in Chinese hamster ovary cells (line AS52), PCC protected the cells against 2AAAF-induced cytotoxicity and point mutation at a specific gene target. These data indicate that agronomic crops such as soybean may yield a wealth of commercially available antimutagenic agents that may be suitable as chemoprotective food supplements.
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Affiliation(s)
- M J Plewa
- College of Agricultural, Consumer and Environmental Sciences, Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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