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<ChangeLog>
<ChangeLogEntry date="2023-11-14">Updated project metadata.</ChangeLogEntry>
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<DatasetSummary announceDate="2023-11-14" hostingRepository="PRIDE" title="THE PROTEOME SPECIATION OF AN IMMORTALIZED CYSTIC FIBROSIS CELL LINE: NEW PERSPECTIVES ON THE PATHOPHYSIOLOGY OF THE DISEASE.">
<Description>Cystic Fibrosis (CF) is a recessively inherited disease caused by mutations in the Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) gene. CFTR has a pivotal role in the onset of CF, and several proteins are directly or indirectly involved in its homeostasis. To study these CFTR interactors at protein species level, we used a functional proteomics approach combining 2D-DIGE, mass spectrometry and enrichment analysis. A human cystic fibrosis bronchial epithelial cell line (CFBE41o-) was used for analysis. 74 differentially expressed spots were identified and some were validated by western-blot. Enrichment analysis highlighted molecular pathways in which ezrin, HSP70, endoplasmin and lamin A/C, in addition to CFTR, were considered central hubs in CFTR homeostasis. These proteins acquire different functions through post-translational modifications, emphasizing the importance of studying the CF proteome at protein species level. Moreover, serpin H1, prelamin A/C, protein-SET and cystatin-B were associated for the first time to CF, demonstrating the importance of heat shock response, cross-talk between the cytoskeleton and signal transduction, chronic inflammation and alteration of CFTR gating in the pathophysiology of the disease. These results open new perspectives for the understanding of the proteostasis network, characteristic of CF pathology, and could provide a springboard for new therapeutic strategies.</Description>
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