Long-term expression of human coagulation factor VIII and correction of hemophilia A after in vivo retroviral gene transfer in factor VIII-deficient mice

T VandenDriessche, V Vanslembrouck, I Goovaerts, H Zwinnen, M L Vanderhaeghen, D Collen, M K Chuah

Research output: Contribution to journalArticle

149 Citations (Scopus)

Abstract

Hemophilia A is caused by a deficiency in coagulation factor VIII (FVIII) and predisposes to spontaneous bleeding that can be life-threatening or lead to chronic disabilities. It is well suited for gene therapy because a moderate increase in plasma FVIII concentration has therapeutic effects. Improved retroviral vectors expressing high levels of human FVIII were pseudotyped with the vesicular stomatitis virus G glycoprotein, were concentrated to high-titers (10(9)-10(10) colony-forming units/ml), and were injected intravenously into newborn, FVIII-deficient mice. High-levels (>/=200 milliunits/ml) of functional human FVIII production could be detected in 6 of the 13 animals, 4 of which expressed physiologic or higher levels (500-12,500 milliunits/ml). Five of the six expressers produced FVIII and survived an otherwise lethal tail-clipping, demonstrating phenotypic correction of the bleeding disorder. FVIII expression was sustained for >14 months. Gene transfer occurred into liver, spleen, and lungs with predominant FVIII mRNA expression in the liver. Six of the seven animals with transient or no detectable human FVIII developed FVIII inhibitors (7-350 Bethesda units/ml). These findings indicate that a genetic disease can be corrected by in vivo gene therapy using retroviral vectors.

Original languageEnglish
Pages (from-to)10379-10384
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume96
Issue number18
Publication statusPublished - 31 Aug 1999

Keywords

  • Animals
  • Factor VIII
  • Gene Transfer Techniques
  • Genetic Therapy
  • Hemophilia A
  • Humans
  • Membrane Glycoproteins
  • Mice
  • Mice, Knockout
  • Organ Specificity
  • Phenotype
  • Polymerase Chain Reaction
  • RNA, Messenger
  • Retroviridae
  • Time Factors
  • Transcription, Genetic
  • Vesicular stomatitis Indiana virus
  • Viral Envelope Proteins
  • Journal Article

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