Jolink, Hetty;
Meijssen, Isabelle C.;
Hagedoorn, Renate S.;
Arentshorst, Mark;
Drijfhout, Jan W.;
Mulder, Arend;
Claas, Frans H. J.;
van Dissel, Jaap T.;
Falkenburg, J. H. Frederik;
Heemskerk, Mirjam H. M.
Characterization of the T-Cell-Mediated Immune Response Against the Aspergillus fumigatus Proteins Crf1 and Catalase 1 in Healthy Individuals
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Media type:
E-Article
Title:
Characterization of the T-Cell-Mediated Immune Response Against the Aspergillus fumigatus Proteins Crf1 and Catalase 1 in Healthy Individuals
Contributor:
Jolink, Hetty;
Meijssen, Isabelle C.;
Hagedoorn, Renate S.;
Arentshorst, Mark;
Drijfhout, Jan W.;
Mulder, Arend;
Claas, Frans H. J.;
van Dissel, Jaap T.;
Falkenburg, J. H. Frederik;
Heemskerk, Mirjam H. M.
Description:
<p>Invasive aspergillosis is a serious infectious complication after allogeneic stem cell transplantation. One of the strategies to improve the management of aspergillosis is the adoptive transfer of antigen-specific T cells, the success of which depends on the development of a broad repertoire of antigen-specific T cells. In this study, we identified CD4⁺ T cells specific for the Aspergillus proteins Crf1 and catalase 1 in 18 of 24 healthy donors by intracellular staining for interferon γ and CD154. Crf1- and catalase 1-specific T cells were selected on the basis of CD137 expression and underwent single-cell expansion. Aspergillus-specific T-cell clones mainly exhibited a T-helper cell 1 phenotype and recognized a broad variety of T-cell epitopes. Five novel Crf1 epitopes, 2 previously described Crf1 epitopes, and 30 novel catalase 1 epitopes were identified. Ultimately, by using overlapping peptides of Aspergillus fumigatus proteins, Aspergillus-specific T-cell lines that have a broad specificity and favorable cytokine profile and are suitable for adoptive T-cell therapy can be generated in vitro.</p>