CFTR expression from a BAC carrying the complete human gene and associated regulatory elements

George Kotzamanis*, Hassan Abdulrazzak, Jennifer Gifford-Garner, Pei Ling Haussecker, Wing Cheung, Catherine Grillot-Courvalin, Ann Harris, Christos Kittas, Athanasios Kotsinas, Vassilis G. Gorgoulis, Clare Huxley

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


The use of genomic DNA rather than cDNA or mini-gene constructs in gene therapy might be advantageous as these contain intronic and long-range control elements vital for accurate expression. For gene therapy of cystic fibrosis though, no bacterial artificial chromosome (BAC), containing the whole CFTR gene is available. We have used Red homologous recombination to add a to a previously described vector to construct a new BAC vector with a 250.3-kb insert containing the whole coding region of the CFTR gene along with 40.1 kb of DNA 5′ to the gene and 25 kb 3′ to the gene. This includes all the known control elements of the gene. We evaluated expression by RT-PCR in CMT-93 cells and showed that the gene is expressed both from integrated copies of the BAC and also from episomes carrying the oriP/EBNA-1 element. Sequencing of the human CFTR mRNA from one clone showed that the BAC is functional and can generate correctly spliced mRNA in the mouse background. The BAC described here is the only CFTR genomic construct available on a convenient vector that can be readily used for gene expression studies or in vivo studies to test its potential application in gene therapy for cystic fibrosis.

Original languageEnglish (US)
Pages (from-to)2938-2948
Number of pages11
JournalJournal of Cellular and Molecular Medicine
Issue number9 A
StatePublished - Sep 2009


  • BAC
  • Bacterial invasion
  • CFTR
  • Expression
  • Recombineering

ASJC Scopus subject areas

  • Molecular Medicine
  • Cell Biology


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