ArticleBiomolecules2026
Targeting Protein-Protein Interactions (PPIs) to Drive Functional Annotation: An Integrative Methodology to Study Senescence-Associated PPIs Using TMPRSS11a as Model Interactor.
Article in Biomolecules, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Protein-protein interactions (PPIs) play a central role in regulating cellular processes. However, the identification and characterization of senescence-associated PPIs remain challenging. In this study, we developed and evaluated an integrative methodology based on selective proteomics to identify PPIs associated with cellular senescence induced by TMPRSS11a. We started from isolated proteins that co-immunoprecipitated with TMPRSS11a and were subsequently identified by mass spectrometry. Building on this dataset, we implemented a workflow combining selective proteomics, structural bioinformatics, and experimental validation. Using this approach, we investigated the interaction between the transmembrane serine protease TMPRSS11a and the chaperone HSPA8. Structural bioinformatics analyses were performed to identify potential residues involved in the interaction interface, and the proximity of the TMPRSS11a-HSPA8 complex was evaluated using an in vitro proximity ligation assay. Our results provide evidence for an interaction between TMPRSS11a and HSPA8 and suggest its association with an enhanced senescence response. Overall, this study presents a workflow to investigate senescence-associated PPIs from proteomics-derived candidate proteins.
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