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Updated: Sep 28, 2025

Generation of Human Nasal Epithelial Cell Spheroids for Individualized Cystic Fibrosis Transmembrane Conductance Regulator Study
Published on: April 11, 2018
Proteostasis Regulators in Cystic Fibrosis: Current Development and Future Perspectives
Irene Brusa1,2, Elvira Sondo3, Federico Falchi4
1Department of Pharmacy and Biotechnology, University of Bologna, 40126 Bologna, Italy.
Abstract:
In cystic fibrosis (CF), the deletion of phenylalanine 508 (F508del) in the CF transmembrane conductance regulator (CFTR) leads to misfolding and premature degradation of the mutant protein. These defects can be targeted with pharmacological agents named potentiators and correctors. During the past years, several efforts have been devoted to develop and approve new effective molecules. However, their clinical use remains limited, as they fail to fully restore F508del-CFTR biological function. Indeed, the search for CFTR correctors with different and additive mechanisms has recently increased. Among them, drugs that modulate the CFTR proteostasis environment are particularly attractive to enhance therapy effectiveness further. This Perspective focuses on reviewing the recent progress in discovering CFTR proteostasis regulators, mainly describing the design, chemical structure, and structure-activity relationships. The opportunities, challenges, and future directions in this emerging and promising field of research are discussed, as well.
Insights
New drugs targeting cystic fibrosis (CF) aim to improve CF transmembrane conductance regulator (CFTR) protein function. Researchers are exploring proteostasis regulators to enhance current CFTR corrector and potentiator therapies.
Area of Science:
- Molecular Biology
- Pharmacology
- Genetics
Background:
- Cystic fibrosis (CF) is characterized by the F508del mutation in the CF transmembrane conductance regulator (CFTR) protein.
- This mutation causes protein misfolding and premature degradation, impairing CFTR function.
- Current CFTR potentiators and correctors offer limited clinical benefit, necessitating novel therapeutic strategies.
Purpose of the Study:
- To review recent advancements in the discovery of CFTR proteostasis regulators.
- To discuss the design, chemical structure, and structure-activity relationships of these novel agents.
- To explore the potential of modulating the CFTR proteostasis environment for enhanced CF therapy.
Main Methods:
- Literature review of recent research on CFTR proteostasis regulators.
- Analysis of drug design, chemical structures, and structure-activity relationships.
- Discussion of therapeutic opportunities and challenges in the field.
Main Results:
- Several novel CFTR proteostasis regulators have been identified.
- These agents show promise in enhancing the efficacy of existing CFTR-targeting drugs.
- Understanding structure-activity relationships is crucial for optimizing therapeutic potential.
Conclusions:
- Modulating CFTR proteostasis represents a promising avenue for improving cystic fibrosis treatment.
- Further research into CFTR proteostasis regulators is warranted to overcome current therapeutic limitations.
- This field offers significant opportunities for developing more effective CF therapies.
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