Wildtype Cftr
Wildtype Cftr - Related Videos
10:05
In Vitro Analysis of PDZ-dependent CFTR Macromolecular Signaling Complexes
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Cited by 7 •
2012
Cystic fibrosis transmembrane conductance regulator (CFTR), an epithelial chloride channel, has been reported to interact with various proteins and regulate important cellular processes; among them the CFTR PDZ motif-mediated interactions have been well documented. This protocol describes methods we developed to assemble a PDZ-dependent CFTR macromolecular signaling complex in vitro.
09:59
Functional Reconstitution and Channel Activity Measurements of Purified Wildtype and Mutant CFTR Protein
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Cited by 7 •
2015
Described here is a rapid and effective procedure for functional reconstitution of purified wild-type and mutant CFTR protein that preserves activity for this chloride channel, which is defective in Cystic Fibrosis. Iodide efflux from reconstituted proteoliposomes mediated by CFTR allows studies of channel activity and the effects of small molecules.
05:11
Wild-Type Blocking PCR to Detect Low-Frequency Somatic Mutations
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2025
This video describes wild-type blocking polymerase chain reaction, or WTB-PCR, which detects somatic mutations. The PCR-based technique uses a locked nucleic acid, or LNA, an oligonucleotide that binds to its complementary wild-type allele and blocks its elongation. The blocking selectively allows the amplification of low-level mutant alleles over their wild-type variants in the sample.
03:03
Phenotypic Comparison of Wild-Type and Mutant Strains of Streptomyces coelicolor
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2025
Source: Bennett, J. A., et al. Visual and Microscopic Evaluation of Streptomyces Developmental Mutants. J. Vis. Exp. (2018)This video demonstrates the cultivation and phenotypic comparison of wild-type and mutant Streptomyces coelicolor strains. It outlines procedures for minimizing spontaneous mutations, preventing cross-contamination, and promoting bacterial growth through proper plating techniques. Finally, the video highlights visual differences in colony morphology to illustrate the...
02:04
Transfection of Wild-Type Amoeba via Electroporation with Bacterial Feeding Support
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2025
Source: Paschke, P., et al. Genetic Engineering of Dictyostelium discoideum Cells Based on Selection and Growth on Bacteria. J. Vis. Exp. (2019).This video demonstrates the procedure for introducing a plasmid carrying a target gene into amoeba cells via electroporation, followed by recovery in a bacterial supplement to enable efficient gene delivery in wild-type amoeba.
FAQs
CFTR channel opening depends on two linked regulatory inputs: cAMP-dependent phosphorylation and ATP binding. Phosphorylation helps establish the regulatory state, while ATP binding participates in controlling whether the channel opens. Studying wildtype CFTR under these regulatory conditions gives researchers a baseline for separating defects in channel regulation from defects in ion movement.
The channel’s movement of chloride and bicarbonate ions contributes to the composition and volume of epithelial secretions. This activity is relevant in airway and intestinal epithelia, as well as other secretory tissues. Measuring these ion-transport effects helps connect CFTR channel behavior with broader changes in epithelial fluid balance.
Comparisons can show whether a variant disrupts protein regulation, channel opening, or ion transport relative to the naturally occurring reference form. These differences help researchers link altered CFTR structure to impaired epithelial function. The resulting comparison provides a framework for interpreting how specific mutations may contribute to cystic fibrosis-related abnormalities.
Researchers compare mutant and wildtype CFTR in cultured cells or tissues to establish normal channel behavior under the same experimental context. The wildtype reference helps identify changes attributable to a disease-associated variant rather than to the surrounding biological system. This design supports clearer evaluation of CFTR function and dysfunction.
Wildtype CFTR supplies a functional benchmark for measuring channel activity and assessing corrective treatments. If a treatment changes the behavior of a mutant protein toward the wildtype reference, that comparison can indicate improved CFTR function. The reference therefore supports interpretation of treatment effects without treating mutant activity as the normal standard.
A normal CFTR reference allows researchers to model disease by contrasting intact channel behavior with altered forms in cultured cells or tissues. This comparison connects molecular changes to epithelial ion transport and secretion. It also helps organize experiments that investigate disease mechanisms, variant effects, and the performance of corrective treatments.