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Network biology approaches in the identification of novel pharmacological targets – the case of cystic fibrosis

2019-07-10Conference object Open access
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dc.contributor.authorLoureiro, Cláudia
dc.contributor.authorMatos, Ana
dc.contributor.authorSantos, João
dc.contributor.authorFarinha, Carlos
dc.contributor.authorJordan, Peter
dc.contributor.authorMatos, Paulo
dc.contributor.authorPinto, Francisco
dc.date.accessioned2020-09-14T10:42:16Z
dc.date.available2020-09-14T10:42:16Z
dc.date.issued2019-07-10
dc.description.abstractIn cystic fibrosis, the most common disease-causing mutation is F508del, which causes not only intracellular retention and degradation of CFTR, but also defective channel gating and decreased membrane stability of the small amount that reaches the plasma membrane (PM). Thus, pharmacological correction of mutant CFTR requires targeting of multiple cellular defects in order to achieve clinical benefit. Although small-molecule compounds have been identified and commercialized that can correct its folding or gating, an efficient retention of F508del CFTR at the PM has not yet been explored pharmacologically despite being recognized as a crucial factor for improving functional rescue of chloride transport. In ongoing efforts to determine the CFTR interactome at the PM, we used three complementary approaches: targeting proteins binding to tyrosine-phosphorylated CFTR, protein complexes involved in cAMP-mediated CFTR stabilization at the PM, and proteins selectively interacting at the PM with rescued F508del-CFTR but not wt-CFTR. Using co-immunoprecipitation or peptide–pull down strategies, we identified around 400 candidate proteins through sequencing of complex protein mixtures using the nano-LC Triple TOF MS technique. Key candidate proteins were validated for their robust interaction with CFTR-containing protein complexes and for their ability to modulate the amount of CFTR expressed at the cell surface of bronchial epithelial cells. Here, we describe how we explored the abovementioned experimental datasets to build a protein interaction network with the aim of identifying novel pharmacological targets to rescue CFTR function in cystic fibrosis (CF) patients. We identified and validated novel candidate proteins that were essential components of the network but not detected in previous proteomic analyses.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.18/7188
dc.language.isoengpt_PT
dc.peerreviewednopt_PT
dc.subjectCystic Fibrosispt_PT
dc.subjectFibrose Quísticapt_PT
dc.subjectInteractomapt_PT
dc.subjectBiologia Computacionalpt_PT
dc.subjectVias de Transdução de Sinal e Patologias Associadaspt_PT
dc.titleNetwork biology approaches in the identification of novel pharmacological targets – the case of cystic fibrosispt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceLisboa, Portugalpt_PT
oaire.citation.titleEncontro Ciência 2019, Fundação para a Ciência e a Tecnologia, colab. Ciência Viva – Agência Nacional para a Cultura Científica e Tecnológica e a Comissão Parlamentar de Educação e Ciência, 8-10 julho 2019pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT

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