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Novel adeno-associated viral vectors for retinal gene therapy.

Abstract
Vectors derived from adeno-associated virus (AAV) are currently the most promising vehicles for therapeutic gene delivery to the retina. Recently, subretinal administration of AAV2 has been demonstrated to be safe and effective in patients with a rare form of inherited childhood blindness, suggesting that AAV-mediated retinal gene therapy may be successfully extended to other blinding conditions. This is further supported by the great versatility of AAV as a vector platform as there are a large number of AAV variants and many of these have unique transduction characteristics useful for targeting different cell types in the retina including glia, epithelium and many types of neurons. Naturally occurring, rationally designed or in vitro evolved AAV vectors are currently being utilized to transduce several different cell types in the retina and to treat a variety of animal models of retinal disease. The continuous and creative development of AAV vectors provides opportunities to overcome existing challenges in retinal gene therapy such as efficient transfer of genes exceeding AAV's cargo capacity, or the targeting of specific cells within the retina or transduction of photoreceptors following routinely used intravitreal injections. Such developments should ultimately advance the treatment of a wide range of blinding retinal conditions.
AuthorsL H Vandenberghe, A Auricchio
JournalGene therapy (Gene Ther) Vol. 19 Issue 2 Pg. 162-8 (Feb 2012) ISSN: 1476-5462 [Electronic] England
PMID21993172 (Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't, Review)
Topics
  • Animals
  • Blindness (genetics, pathology, therapy)
  • Dependovirus (genetics)
  • Disease Models, Animal
  • Genetic Therapy
  • Genetic Vectors (administration & dosage)
  • Humans
  • Photoreceptor Cells (pathology)
  • Retina (cytology, pathology)
  • Retinal Diseases (genetics, therapy)

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