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    Dysregulation of peroxisome proliferator-activated receptor (PPAR)-γ has been described in a plethora of pathological conditions, such as diabetes, obesity, inflammatory-related diseases, and cancer. Therefore, identifying novel drugs that are able to restore PPAR-γ activity is a current challenge, which is however slowed down by the lack of a rapid and reproducible activity assay. To date, only a few methods are able to characterize PPAR-γ activity and most of them are expensive, time-consuming, and not always quantitative.Herein, we presented a sensitive multi-well colorimetric assay, termed DNA-Protein-Interaction enzyme-linked immunosorbent assay (DPI-ELISA). This method is based on the ELISA principle, except that it allows to detect only activated PPAR-γ because, unlike classical ELISA, PPAR-γ is not captured by an antibody but by a double-stranded oligonucleotide probe containing its peroxisome proliferator response elements (PPRE) consensus sequence. Thus, DPI-ELISA represents a useful assay for PPAR-γ studies, as well as for the identification of novel PPAR-γ ligands for the development of innovative therapeutic approaches to human diseases where PPAR-γ signaling is dysregulated. © 2023. The Author(s), under exclusive license to Springer Science+Business Media, LLC, part of Springer Nature.


    M Valeria Catani, Valentina Tullio, Mauro Maccarrone, Valeria Gasperi. DNA-Protein-Interaction (DPI)-ELISA Assay for PPAR-γ Receptor Binding. Methods in molecular biology (Clifton, N.J.). 2023;2576:133-143

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    PMID: 36152182

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