دورية أكاديمية
T Cell Responses in Pregnant Women Who Received mRNA-Based Vaccination to Prevent COVID-19 Revealed Unknown Exposure to the Natural Infection and Numerous SARS-CoV-2-Specific CD4- CD8- Double Negative T Cells and Regulatory T Cells
العنوان: | T Cell Responses in Pregnant Women Who Received mRNA-Based Vaccination to Prevent COVID-19 Revealed Unknown Exposure to the Natural Infection and Numerous SARS-CoV-2-Specific CD4- CD8- Double Negative T Cells and Regulatory T Cells |
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المؤلفون: | Christina D. Chambers, Jaeyoon Song, Ricardo da Silva Antunes, Alessandro Sette, Alessandra Franco |
المصدر: | International Journal of Molecular Sciences, Vol 25, Iss 4, p 2031 (2024) |
بيانات النشر: | MDPI AG, 2024. |
سنة النشر: | 2024 |
المجموعة: | LCC:Biology (General) LCC:Chemistry |
مصطلحات موضوعية: | SARS-CoV-2 vaccination in pregnancy, natural COVID-19 infection, CD4- CD8- double negative (DN) T cells, regulatory T cells, immune regulation, Biology (General), QH301-705.5, Chemistry, QD1-999 |
الوصف: | We studied T-cell responses to SARS-CoV-2 in 19 pregnant subjects at different gestational weeks who received three doses of mRNA-based vaccination to prevent COVID-19. SARS-CoV-2 peptide pools were used for T-cell recognition studies: peptides were 15 amino acids long and had previously been defined in COVID-19-convalescent subjects. T-cell activation was evaluated with the AIM assay. Most subjects showed coordinated, spike-specific CD4+ and CD8+ T-cell responses and the development of T cell memory. Non-spike-specific T cells in subjects who were not aware of previous COVID-19 infection suggested a prior undetected, asymptomatic infection. CD4- CD8- double negative (DN) T cells were numerous, of which a percentage was specific for SARS-CoV-2 spike peptides. Regulatory T cells (Treg), both spike- and non-spike-specific, were also greatly expanded. Two Treg populations were defined: a population differentiated from naïve T cells, and pTreg, reverting from pro-inflammatory T cells. The Treg cells expressed CCR6, suggesting homing to the endometrium and vaginal epithelial cells. The pregnant women responded to SARS-CoV-2 vaccination. Asymptomatic COVID-19 was revealed by the T cell response to the non-spike peptides. The numerous DN T cells and Treg pointed our attention to new aspects of the adaptive immune response in vaccine recipients. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1422-0067 1661-6596 |
العلاقة: | https://www.mdpi.com/1422-0067/25/4/2031Test; https://doaj.org/toc/1661-6596Test; https://doaj.org/toc/1422-0067Test |
DOI: | 10.3390/ijms25042031 |
الوصول الحر: | https://doaj.org/article/3c34d89f563d473b9fa15a03ef395403Test |
رقم الانضمام: | edsdoj.3c34d89f563d473b9fa15a03ef395403 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 14220067 16616596 |
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DOI: | 10.3390/ijms25042031 |