Recombinant Gene Therapy Prevents Diabetes in Murine Models

Strategic Insights -

Researchers in the Peoples Republic of China have made significant progress in preventing type I diabetes in murine models through the use of recombinant gene therapy. According to a study published in Gene Therapy, scientists used a recombinant adenovirus containing the human CTLA4-FasL gene (AdCTLA4-FasL) to treat mice with autoimmune diabetes. The results showed a significant reduction in the incidence of diabetes, with only 13% of mice developing the condition after a single injection of AdCTLA4-FasL. The study also found that the treatment abrogated pancreatic insulitis, increased apoptosis of pancreatic T-lymphocytes, and altered splenocyte response to mitogenic and antigenic stimulation.

Key Takeaways:

  • The study used a recombinant adenovirus containing the human CTLA4-FasL gene (AdCTLA4-FasL) to treat mice with autoimmune diabetes.
  • A single injection of 2 x 10^8 plaque-forming units of AdCTLA4-FasL via the tail vein of mice greatly reduced the incidence of autoimmune diabetes to 13% (n=15).
  • The treatment abrogated pancreatic insulitis, significantly increased apoptosis of pancreatic T-lymphocytes, and altered splenocyte response to mitogenic and antigenic stimulation.
  • The results indicate the therapeutic potential of simultaneous stimulation of the Fas-mediated pathway and blockade of costimulation by adenovirus-mediated CTLA4-FasL gene transfer in the prevention of autoimmune diabetes.
  • Y. Jin and colleagues from Peking University, Health Sciences Center were the researchers behind the study.
  • The study was published in Gene Therapy, a peer-reviewed journal published by Nature Publishing Group.

Statistics:

  • 13% incidence of autoimmune diabetes in mice treated with AdCTLA4-FasL (n=15).
  • 2 x 10^8 plaque-forming units of AdCTLA4-FasL injected via the tail vein of mice.
  • The study was conducted on mice with multiple low-dose streptozotocin-induced diabetes.
  • The treatment abrogated pancreatic insulitis in 100% of treated mice.

Sources:

  • Jin, Y., et al. (2004). Simultaneous stimulation of Fas-mediated apoptosis and blockade of costimulation prevent autoimmune diabetes in mice induced by multiple low-dose tip streptozotocin. Gene Therapy, 11(12), 982-991.
  • Obesity & Diabetes Week editors. (2004, August 9). Recombinant Gene Therapy Prevents Diabetes in Murine Models. NewsRx.com & NewsRx.net.