Cftr Expression
Cftr Expression - Related Videos
10:05
In Vitro Analysis of PDZ-dependent CFTR Macromolecular Signaling Complexes
0 Views •
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
0 Views •
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.
02:35
Chromatin Position Affects Gene Expression
0 Views •
2020
Chromatin is the massive complex of DNA and proteins packaged inside the nucleus. The complexity of chromatin folding and how it is packaged inside the nucleus greatly influences access to genetic information. Generally, the nucleus' periphery is considered transcriptionally repressive, while the cell's interior is considered a transcriptionally active area. Topologically Associated Domains (TADs) The 3-dimensional positioning of chromatin in the nucleus influences the timing and level of...
14:56
Expression and Purification of the Cystic Fibrosis Transmembrane Conductance Regulator Protein in Saccharomyces cerevisiae
0 Views •
Cited by 19 •
2012
Attempts to express the cystic fibrosis transmembrane conductance regulator (CFTR) in Saccharomyces cerevisiae have, until now, yielded relatively low amounts of protein. This protocol and the associated reagents distributed via the Cystic Fibrosis Foundation should allow the preparation of milligram amounts of this 'difficult' eukaryotic membrane protein.
15:12
Purification of the Cystic Fibrosis Transmembrane Conductance Regulator Protein Expressed in Saccharomyces cerevisiae
0 Views •
Cited by 21 •
2014
Heterologous expression and purification of the cystic fibrosis transmembrane conductance regulator (CFTR) are significant challenges and limiting factors in the development of drug therapies for cystic fibrosis. This protocol describes two methods for the isolation of milligram quantities of CFTR suitable for functional and structural...
FAQs
CFTR expression can vary with tissue and developmental state, making biological context a major experimental variable. Airway cells, intestinal organoids, and other model systems may therefore show different expression patterns. Comparing these contexts helps distinguish tissue-specific gene regulation from findings that might otherwise be interpreted as universal features of CFTR biology.
Assessing both RNA and protein provides a more complete view than measuring transcription alone. Messenger RNA indicates the transcript produced from the gene, whereas protein measurement addresses whether that transcript is represented in the membrane channel required for ion transport. This distinction helps researchers interpret whether an observed change occurs at the RNA stage, protein stage, or both.
Changes in CFTR expression are relevant because the resulting channel contributes to chloride and bicarbonate transport in epithelial cells. Those ions help regulate salt and fluid balance, so expression measurements can be connected to broader assessments of epithelial function. In cystic fibrosis biology, this link allows molecular observations to be interpreted alongside transport-related consequences.
Developmental state matters because cells may regulate CFTR differently as they mature or change state. A result obtained in one state may not predict expression in another, even when the same gene is examined. Recording developmental context therefore improves comparisons among experiments and helps investigators study how regulation changes across tissues and stages.
Airway cells and intestinal organoids are useful contexts for CFTR expression studies, while other model systems can provide complementary information. These models allow investigators to examine expression alongside epithelial function, disease-associated variants, or treatment responses. Selecting more than one context can reveal whether a finding reflects a general feature or tissue-specific regulation.
To study disease-associated variants, researchers can compare CFTR expression with epithelial function in an appropriate model system. The expression result adds molecular context, while the functional assessment indicates how the epithelium performs. This combined view helps distinguish questions about gene regulation from questions about the biological effect associated with a variant.
Expression measurements can be used to examine responses to corrective treatments in airway cells, intestinal organoids, or other models. Changes in RNA or protein provide molecular evidence of a treatment response, while epithelial-function assessments add biological context. This approach supports therapeutic evaluation without assuming that a result in one tissue will apply identically to another.