Current Gene Therapy - Volume 3, Issue 1, 2003

The efficacy of various currently available therapeutic strategies for bladder cancer is not always sufficient, especially for the advanced disease, recurrent superficial cancer, and treatment-resistant carcinoma in situ. Advances in genetic and molecular biology have led to novel approaches for cancer treatment. Gene therapy is currently one of the most promising strategies against various malignancies, and several clinical t Read More

Gene-directed enzyme prodrug therapy (GDEPT) is a two step therapeutic approach for cancer gene therapy. In the first step, the transgene is delivered into the tumor and expressed. In the second step a prodrug is administered and is selectively activated by the expressed enzyme. The first GDEPT system described was the thymidine kinase gene of the Herpes Simplex virus (HSVtk) in combination with the prodrug Ganci Read More

Hemophilia A, the most common inherited bleeding disorder, is caused by deficiency or functional defects in coagulation factor VIII (fVIII). Conventional treatment for this disease involves intravenous infusions of plasma-derived or recombinant fVIII products. Although replacement therapy effectively stops the bleeding episodes, it has a risk of transmission of viral blood-borne diseases and development of neutralizin Read More

Cerebral ischemia induces many degenerative cellular reactions, including the release of excitatory amino acids, the formation of oxygen free radicals, Ca2+ overload, the activation of several cellular enzyme systems such as Ca2+dependent proteases, and the initiation of genomic responses that can affect the tissue outside the area of reduced blood flow. Furthermore, increasing evidence indicates that apoptosis c Read More

We discuss possible gene therapies for the treatment of ischemic diseases in the central nervous system (CNS). These therapies aim at the prevention of carotid artery restenosis, stimulation of angiogenesis for ischemic brain, protection of neurons against ischemia, and prevention of vasospasm due to subarachnoid hemorrhage (SAH).Carotid artery restenosis can perhaps be approached by preventing vascular smoot Read More

Much intensive research has gone into the development of safe and efficient methods for the delivery of therapeutic genes. In vivo electroporation is a non-viral delivery protocol in which plasmid DNA solutions are injected into targeted tissues, followed by electric pulses (typically 100 V, 50 ms). In general, in vivo electroporation enhances gene expression in targeted tissues by 2-3 orders of magnitude, as compared to the injectio Read More

Gene therapy, developing rapidly as a result of advances in molecular biology and the Human Genome Project, is now highlighted as a most hopeful technology of the 21st century. The major goal of gene therapy in diabetes mellitus (DM) is to maintain euglycemia in face of wide variations in dietary intake. Although some obstacles remain to be overcome, the risk-benefit ratio of gene therapy in DM is better than Read More