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10.3389/fimmu.2021.701085

http://scihub22266oqcxt.onion/10.3389/fimmu.2021.701085
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suck abstract from ncbi


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pmid34322127      Front+Immunol 2021 ; 12 (ä): 701085
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  • A Single-Cell Atlas of Lymphocyte Adaptive Immune Repertoires and Transcriptomes Reveals Age-Related Differences in Convalescent COVID-19 Patients #MMPMID34322127
  • Bieberich F; Vazquez-Lombardi R; Yermanos A; Ehling RA; Mason DM; Wagner B; Kapetanovic E; Di Roberto RB; Weber CR; Savic M; Rudolf F; Reddy ST
  • Front Immunol 2021[]; 12 (ä): 701085 PMID34322127show ga
  • COVID-19 disease outcome is highly dependent on adaptive immunity from T and B lymphocytes, which play a critical role in the control, clearance and long-term protection against SARS-CoV-2. To date, there is limited knowledge on the composition of the T and B cell immune receptor repertoires [T cell receptors (TCRs) and B cell receptors (BCRs)] and transcriptomes in convalescent COVID-19 patients of different age groups. Here, we utilize single-cell sequencing (scSeq) of lymphocyte immune repertoires and transcriptomes to quantitatively profile the adaptive immune response in COVID-19 patients of varying age. We discovered highly expanded T and B cells in multiple patients, with the most expanded clonotypes coming from the effector CD8(+) T cell population. Highly expanded CD8(+) and CD4(+) T cell clones show elevated markers of cytotoxicity (CD8: PRF1, GZMH, GNLY; CD4: GZMA), whereas clonally expanded B cells show markers of transition into the plasma cell state and activation across patients. By comparing young and old convalescent COVID-19 patients (mean ages = 31 and 66.8 years, respectively), we found that clonally expanded B cells in young patients were predominantly of the IgA isotype and their BCRs had incurred higher levels of somatic hypermutation than elderly patients. In conclusion, our scSeq analysis defines the adaptive immune repertoire and transcriptome in convalescent COVID-19 patients and shows important age-related differences implicated in immunity against SARS-CoV-2.
  • |Adaptive Immunity[MESH]
  • |Adult[MESH]
  • |Aged[MESH]
  • |Aging/*immunology[MESH]
  • |B-Lymphocytes/*immunology[MESH]
  • |CD4-Positive T-Lymphocytes/*immunology[MESH]
  • |CD8-Positive T-Lymphocytes/*immunology[MESH]
  • |COVID-19/*immunology[MESH]
  • |Cells, Cultured[MESH]
  • |Convalescence[MESH]
  • |Female[MESH]
  • |Humans[MESH]
  • |Male[MESH]
  • |Middle Aged[MESH]
  • |Receptors, Antigen, B-Cell/genetics[MESH]
  • |Receptors, Antigen, T-Cell/genetics[MESH]
  • |SARS-CoV-2/*physiology[MESH]
  • |Single-Cell Analysis[MESH]
  • |Transcriptome[MESH]


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