ArticleScientific reports2021
Nonspecific binding of common anti-CFTR antibodies in ciliated cells of human airway epithelium.
Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 22 citations in OpenAlex.
- The Challenges of Detecting Neutrophil CFTR.Journal of innate immunity · 2026Review
- Pharmacological and pre-clinical safety profile of rSIV.F/HN, a hybrid lentiviral vector for cystic fibrosis gene therapy.The European respiratory journal · 2025Article
- Selective amino acid formulation enhances anion secretion and restores function in cystic fibrosis mutations.Frontiers in pharmacology · 2025Article
- Bitter taste receptor T2R14-Gαi coupling mediates innate immune responses to microbial quorum sensing molecules in cystic fibrosis.iScience · 2024Article
- Analysis of CFTR mRNA and Protein in Peripheral Blood Mononuclear Cells via Quantitative Real-Time PCR and Western Blot.International journal of molecular sciences · 2024Article
- Prime editing functionally corrects cystic fibrosis-causing CFTR mutations in human organoids and airway epithelial cells.Cell reports. Medicine · 2024Article
- Functional Consequences of CFTR Interactions in Cystic Fibrosis.International journal of molecular sciences · 2024Review
- Cell type-specific regulation of CFTR trafficking-on the verge of progress.Frontiers in cell and developmental biology · 2024Review
- Current landscape of cystic fibrosis gene therapy.Frontiers in pharmacology · 2024Review
- SLC26A9 in airways and intestine: secretion or absorption?Channels (Austin, Tex.) · 2023Review
- Article
- Changes in cystic fibrosis transmembrane conductance regulator protein expression prior to and during elexacaftor-tezacaftor-ivacaftor therapy.Frontiers in pharmacology · 2023Article
- Mucins and CFTR: Their Close Relationship.International journal of molecular sciences · 2022Review
Corrections and comments
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
There is evidence that the cystic fibrosis transmembrane conductance regulator (CFTR) anion channel is highly expressed at the apical pole of ciliated cells in human bronchial epithelium (HBE), however recent studies have detected little CFTR mRNA in those cells. To understand this discrepancy we immunostained well differentiated primary HBE cells using CFTR antibodies. We confirmed apical immunofluorescence in ciliated cells and quantified the covariance of the fluorescence signals and that of an antibody against the ciliary marker centrin-2 using image cross-correlation spectroscopy (ICCS). Super-resolution stimulated emission depletion (STED) imaging localized the immunofluorescence in distinct clusters at the bases of the cilia. However, similar apical fluorescence was observed when the monoclonal CFTR antibodies 596, 528 and 769 were used to immunostain ciliated cells expressing F508del-CFTR, or cells lacking CFTR due to a Class I mutation. A BLAST search using the CFTR epitope identified a similar amino acid sequence in the ciliary protein rootletin X1. Its expression level correlated with the intensity of immunostaining by CFTR antibodies and it was detected by 596 antibody after transfection into CFBE cells. These results may explain the high apparent expression of CFTR in ciliated cells and reports of anomalous apical immunofluorescence in well differentiated cells that express F508del-CFTR.
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