التفاصيل البيبلوغرافية
| العنوان: |
Ivacaftor Reverses Airway Mucus Abnormalities in a Rat Model Harboring a Humanized G551D-CFTR. |
| المؤلفون: |
Birket, Susan E., Davis, Joy M., Fernandez-Petty, Courtney M., Henderson, Alexander G., Oden, Ashley M., LiPing Tang, Hui Wen, Jeong Hong, Lianwu Fu, Chambers, Andre, Fields, Alvin, Zhao, Gojun, Tearney, Guillermo J., Sorscher, Eric J., Rowe, Steven M., Tang, LiPing, Wen, Hui, Hong, Jeong, Fu, Lianwu |
| المصدر: |
American Journal of Respiratory & Critical Care Medicine; 11/1/2020, Vol. 202 Issue 9, p1271-1282, 12p |
| مصطلحات موضوعية: |
ANIMAL models in research, RATIONALE (Episcopal vestment), CYSTIC fibrosis, LUNG diseases, CLINICAL trials, LAXATIVES, MUCUS, BIOLOGICAL models, RESEARCH, PHENOLS, ANIMAL experimentation, RESEARCH methodology, EVALUATION research, MEDICAL cooperation, RATS, COMPARATIVE studies, IMPACT of Event Scale, RESEARCH funding, QUINOLONE antibacterial agents, MEMBRANE proteins |
| مستخلص: |
Rationale: Animal models have been highly informative for understanding the characteristics, onset, and progression of cystic fibrosis (CF) lung disease. In particular, the CFTR-/- rat has revealed insights into the airway mucus defect characteristic of CF but does not replicate a human-relevant CFTR (cystic fibrosis transmembrane conductance regulator) variant.Objectives: We hypothesized that a rat expressing a humanized version of CFTR and harboring the ivacaftor-sensitive variant G551D could be used to test the impact of CFTR modulators on pathophysiologic development and correction.Methods: In this study, we describe a humanized-CFTR rat expressing the G551D variant obtained by zinc finger nuclease editing of a human complementary DNA superexon, spanning exon 2-27, with a 5' insertion site into the rat gene just beyond intron 1. This targeted insertion takes advantage of the endogenous rat promoter, resulting in appropriate expression compared with wild-type animals.Measurements and Main Results: The bioelectric phenotype of the epithelia recapitulates the expected absence of CFTR activity, which was restored with ivacaftor. Large airway defects, including depleted airway surface liquid and periciliary layers, delayed mucus transport rates, and increased mucus viscosity, were normalized after the administration of ivacaftor.Conclusions: This model is useful to understand the mechanisms of disease and the extent of pathology reversal with CFTR modulators. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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