Englander Institute for Precision Medicine

A protocol for qualitative and quantitative measurement of endosomal processing using hot spot analysis.

TitleA protocol for qualitative and quantitative measurement of endosomal processing using hot spot analysis.
Publication TypeJournal Article
Year of Publication2021
AuthorsClement CC, Nanaware PP, Stern LJ, Santambrogio L
JournalSTAR Protoc
Volume2
Issue3
Pagination100648
Date Published2021 Sep 17
ISSN2666-1667
KeywordsAnimals, Antigens, Dendritic Cells, Endosomes, Membrane Proteins, Mice, Molecular Biology, Peptides, Tandem Mass Spectrometry
Abstract

A detailed quantification of antigen processing by endosomal compartments provides important information on the pattern of protein fragmentation. Here, we describe a protocol that combines gradient purified endosomes, incubated with antigens, followed by hot spot analysis of MS/MS-sequenced peptides. The analysis identifies differences in endosomal antigen processing by dendritic cells under diverse experimental conditions. For complete details on the use and execution of this protocol, please refer to Clement et al. (2021).

DOI10.1016/j.xpro.2021.100648
Alternate JournalSTAR Protoc
PubMed ID34278334
PubMed Central IDPMC8264744
Grant ListP01 AG031782 / AG / NIA NIH HHS / United States

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