A New Missense Mutation G1249E in Exon 20 of the Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Gene

1994 ◽  
Vol 44 (4) ◽  
pp. 238-240 ◽  
Author(s):  
Ignaz Greil ◽  
Klaus Wagner ◽  
Walter Rosenkranz
Keyword(s):  
Cystic Fibrosis ◽  
Missense Mutation ◽  
Cftr Gene ◽  
Transmembrane Conductance Regulator ◽  
Transmembrane Conductance ◽  
Exon 20 ◽  
Cystic Fibrosis Transmembrane

scholarly journals A Peptide-Nucleic Acid Targeting miR-335-5p Enhances Expression of Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Gene with the Possible Involvement of the CFTR Scaffolding Protein NHERF1

Biomedicines ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 117
Author(s):  
Anna Tamanini ◽  
Enrica Fabbri ◽  
Tiziana Jakova ◽  
Jessica Gasparello ◽  
Alex Manicardi ◽  
...  
Keyword(s):  
Cystic Fibrosis ◽  
Nucleic Acid ◽  
Peptide Nucleic Acid ◽  
Stop Codon ◽  
Scaffolding Protein ◽  
Cftr Gene ◽  
Scaffolding Proteins ◽  
Transmembrane Conductance Regulator ◽  
Transmembrane Conductance ◽  
Cystic Fibrosis Transmembrane

(1) Background: Up-regulation of the Cystic Fibrosis Transmembrane Conductance Regulator gene (CFTR) might be of great relevance for the development of therapeutic protocols for cystic fibrosis (CF). MicroRNAs are deeply involved in the regulation of CFTR and scaffolding proteins (such as NHERF1, NHERF2 and Ezrin). (2) Methods: Content of miRNAs and mRNAs was analyzed by RT-qPCR, while the CFTR and NHERF1 production was analyzed by Western blotting. (3) Results: The results here described show that the CFTR scaffolding protein NHERF1 can be up-regulated in bronchial epithelial Calu-3 cells by a peptide-nucleic acid (PNA) targeting miR-335-5p, predicted to bind to the 3′-UTR sequence of the NHERF1 mRNA. Treatment of Calu-3 cells with this PNA (R8-PNA-a335) causes also up-regulation of CFTR. (4) Conclusions: We propose miR-335-5p targeting as a strategy to increase CFTR. While the efficiency of PNA-based targeting of miR-335-5p should be verified as a therapeutic strategy in CF caused by stop-codon mutation of the CFTR gene, this approach might give appreciable results in CF cells carrying other mutations impairing the processing or stability of CFTR protein, supporting its application in personalized therapy for precision medicine.

scholarly journals A Novel Cystic Fibrosis Gene Mutation C.4242+1G>C in an Omani Patient: A Case Report

2021 ◽  
Vol 36 (2) ◽  
pp. e243-e243
Author(s):  
Said Al Balushi ◽  
Younis Al Balushi ◽  
Moza Al Busaidi ◽  
Latifa Al Mutawa
Keyword(s):  
Cystic Fibrosis ◽  
Gene Mutation ◽  
Digestive System ◽  
The Body ◽  
Cystic Fibrosis Gene ◽  
Cftr Gene ◽  
Sweat Test ◽  
Transmembrane Conductance Regulator ◽  
Transmembrane Conductance ◽  
Cystic Fibrosis Transmembrane

Cystic fibrosis (CF) is a genetic disease caused by a mutation in the cystic fibrosis transmembrane conductance regulator (CFTR) gene that affects multisystems in the body, particularly the lungs and digestive system. We report a case of an Omani newborn who presented with meconium ileus and high suspicion of CF. Thus, full CFTR gene sequencing was performed, which revealed a homozygous unreported C.4242+1G>C novel gene mutation. Both parents were found to be heterozygous for this mutation. This case sheds light on the importance of the extensive genetic testing of typical CF cases in the absence of family history or during neonatal presentations, especially when the sweat test cannot be performed and the diagnosis can be challenging.

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