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Updated: Nov 4, 2025

In Vivo Assay for Detection of Antigen-specific T-cell Cytolytic Function Using a Vaccination Model
Published on: November 28, 2017
Antigen-Specific In Vivo Killing Assay
Nada Chaoul1, Gilles Dadaglio2
1Department of Emergency and Organ Transplant, School and Chair of Allergology and Clinical Immunology, University of Bari-Aldo Moro, Bari, Italy. nada.chaoul@uniba.it.
The in vivo killing assay allows the quantification of the antigen-specific killing capacity of Cytotoxic CD8+ T Lymphocytes (CTLs) in mice. CTLs are indeed known for the lysis of cells expressing foreign or modified antigen peptides on their MHC class I molecules. Here we describe the detailed protocol used for the in vivo specific lysis of cells expressing the H-2 Kb immunodominant CD8+ T-cell epitope of the OVA protein: an 8 amino acid peptide corresponding to the 257-264 region of OVA (SIINFEKL).
The in vivo killing assay allows the quantification of the antigen-specific killing capacity of Cytotoxic CD8+ T Lymphocytes (CTLs) in mice. CTLs are indeed known for the lysis of cells expressing foreign or modified antigen peptides on their MHC class I molecules. Here we describe the detailed protocol used for the in vivo specific lysis of cells expressing the H-2 Kb immunodominant CD8+ T-cell epitope of the OVA protein: an 8 amino acid peptide corresponding to the 257-264 region of OVA (SIINFEKL).

