Adenovirus-mediated gene transfer to retinal ganglion cells.
PURPOSE: To evaluate the capacity of a replication-defective adenoviral vector to transport retrogradely from the superior colliculus to the nuclei of retinal ganglion cells and to express in these cells vector-encoded transgene. METHODS: A replication-deficient adenovirus encoding an expression cassette for the Escherichia coli gene lacZ was injected into the right superior colliculus of mice. Brain sections and both eyes were tested histochemically and/or immunohistochemically for E. coli beta-galactosidase (LacZ) activity at 3, 7, 14, and 30 days after injection. RESULTS: lacZ expression was detected in the retinal ganglion cells of the contralateral eye at 7, 14, and 30 days after injection, but no expression was observed in the retina at 3 days after injection. No signs of retinal pathology was observed histologically. LacZ-positive cells also were found in other afferent systems to the superior colliculus, such as the reticular formation, layer V of the ipsilateral visual cortex, and pars reticulata of the ipsilateral substantia nigra. CONCLUSIONS: Injection of an adenovirus vector into the superior colliculus is an effective means to transfer and express a gene in retinal ganglion cells while avoiding damage to the eye tissues; thus, it represents a potentially useful tool to manipulate gene expression selectively in the retina.[1]References
- Adenovirus-mediated gene transfer to retinal ganglion cells. Cayouette, M., Gravel, C. Invest. Ophthalmol. Vis. Sci. (1996) [Pubmed]
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