PMID- 25149304 OWN - NLM STAT- MEDLINE DCOM- 20150511 LR - 20181202 IS - 1940-6029 (Electronic) IS - 1064-3745 (Linking) VI - 1186 DP - 2014 TI - CTL ELISPOT assay. PG - 75-86 LID - 10.1007/978-1-4939-1158-5_6 [doi] AB - Enzyme-linked immune absorbent spot (Elispot) is a quantitative method for measuring relevant parameters of T cell activation. The sensitivity of Elispot allows the detection of low-frequency antigen-specific T cells that secrete cytokines and effector molecules, such as granzyme B and perforin. Cytotoxic T cell (CTL) studies have taken advantage with this high-throughput technology by providing insights into quantity and immune kinetics. Accuracy, sensitivity, reproducibility, and robustness of Elispot resulted in a wide range of applications in research as well as in diagnostic field. Actually, CTL monitoring by Elispot is a gold standard for the evaluation of antigen-specific T cell immunity in clinical trials and vaccine candidates where the ability to detect rare antigen-specific T cells is of relevance for immune diagnostic. The most utilized Elispot assay is the interferon-gamma (IFN-gamma) test, a marker for CD8(+) CTL activation, but Elispot can also be used to distinguish different subsets of activated T cells by using other cytokines such as T-helper (Th) 1-type cells (characterized by the production of IFN-gamma, IL-2, IL-6, IL-12, IL-21, and TNF-alpha), Th2 (producing cytokines like IL-4, IL-5, IL-10, and IL-13), and Th17 (IL-17) cells. The reliability of Elispot-generated data, by the evaluation of T cell frequency recognizing individual antigen/peptide, is the core of this method currently applied widely to investigate specific immune responses in cancer, infections, allergies, and autoimmune diseases. The Elispot assay is competing with other methods measuring single-cell cytokine production, e.g., intracellular cytokine by FACS or Miltenyi cytokine secretion assay. Other types of lymphocyte frequency and function assays include limiting dilution assay (LDA), cytotoxic T cell assay (CTL), and tetramer staining. Compared with respect to sensitivity the Elispot assay is outranking other methods to define frequency of antigen-specific lymphocytes. The method described herein would like to offer helpful and clear protocols for researchers that apply Elispot. IFN-gamma and perforin Elispot assays are described. FAU - Ranieri, Elena AU - Ranieri E AD - Department of Surgical and Medical Sciences, School of Medicine, University of Foggia, Ospedali Riuniti, Viale Luigi Pinto, 1, Foggia, 71122, Italy, elena.ranieri@unifg.it. FAU - Popescu, Iulia AU - Popescu I FAU - Gigante, Margherita AU - Gigante M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Methods Mol Biol JT - Methods in molecular biology (Clifton, N.J.) JID - 9214969 RN - 0 (Antibodies, Monoclonal) RN - 0 (Epitopes, T-Lymphocyte) RN - 126465-35-8 (Perforin) RN - 82115-62-6 (Interferon-gamma) RN - EC 3.4.21.- (Granzymes) SB - IM MH - Antibodies, Monoclonal/immunology MH - Cytomegalovirus/immunology MH - Enzyme-Linked Immunospot Assay/*methods MH - Epitopes, T-Lymphocyte/immunology MH - Granzymes/metabolism MH - Herpesvirus 4, Human/immunology MH - High-Throughput Screening Assays/methods MH - Humans MH - Interferon-gamma/*analysis/metabolism MH - Lymphocyte Activation/immunology MH - Neoplasms/*diagnosis/immunology MH - Orthomyxoviridae/immunology MH - Perforin/*analysis/metabolism MH - Staining and Labeling MH - T-Lymphocytes, Cytotoxic/cytology/*immunology EDAT- 2014/08/26 06:00 MHDA- 2015/05/12 06:00 CRDT- 2014/08/24 06:00 PHST- 2014/08/24 06:00 [entrez] PHST- 2014/08/26 06:00 [pubmed] PHST- 2015/05/12 06:00 [medline] AID - 10.1007/978-1-4939-1158-5_6 [doi] PST - ppublish SO - Methods Mol Biol. 2014;1186:75-86. doi: 10.1007/978-1-4939-1158-5_6.