Interferon-gamma FlowSpot assay for the measurement of the T-cell response to cytomegalovirus

Autor: Qianyu Ye, Jiali Wang, Meijing Chen, Weijian Nie, Huanxi Zhang, Xiaojun Su, Liuting Ling, Xiangjun Liu, Longshan Liu, Changxi Wang, Yifang Gao
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Heliyon, Vol 9, Iss 6, Pp e16792- (2023)
Druh dokumentu: article
ISSN: 2405-8440
DOI: 10.1016/j.heliyon.2023.e16792
Popis: Objectives: We describe a new method, FlowSpot, to assess CMV-specific T-cell response by quantification of interferon-gamma (IFN-γ). CMV-specific, T-cell-released IFN-γ was captured by flow beads and measured via flow cytometry. In the present study, we used FlowSpot to assess CMV-specific T-cell response in healthy individuals. The FlowSpot results were compared with those of serological analysis and enzyme-linked immunospot (ELISpot) assay. Methods: Experimental results and parameter analysis were investigated by using serological, ELISpot, and FlowSpot assays. Results: The levels of IFN-γ, which is released from CMV-specific T-cells, were measured, and the results and parameter analysis showed a good correlation between FlowSpot and ELISpot. However, FlowSpot was more sensitive and better reflected the strength of IFN-γ secretion than did ELISpot. Conclusions: Compared to ELISpot, FlowSpot has a high sensitivity and is cost and time effective. Thus, this method can be used in wider clinical and scientific applications.
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