T-cell Repertoire Characteristics of Asymptomatic and Re-detectable Positive COVID-19 Patients
Posted 04 Mar 2021
bioRxiv DOI: 10.1101/2021.03.03.433579
Posted 04 Mar 2021
BackgroundThe prevention of COVID-19 pandemic is highly complicated by the prevalence of asymptomatic and recurrent infection. Many previous immunological studies have focused on symptomatic and convalescent patients, while the immune responses in asymptomatic patients and re-detectable positive cases remain unclear. MethodsHere we comprehensively analyzed the peripheral T-cell receptor (TCR) repertoire of 54 COVID-19 patients in different phases, including asymptomatic, symptomatic, convalescent and re-detectable positive cases. ResultsWe found progressed immune responses from asymptomatic to symptomatic phase. Furthermore, the TCR profiles of re-detectable positive cases were highly similar to those of asymptomatic patients, which could predict the risk of recurrent infection. ConclusionTherefore, TCR repertoire surveillance has the potential to strengthen the clinical management and the immunotherapy development for COVID-19. FundingThe Science and Technology Innovation Project of Foshan Municipality (2020001000431) and the National Key Research and Development Project (2020YFA0708001).
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