Modulation of the expression of the transcription factor Max in rat retinal ganglion cells by a recombinant adeno-associated viral vector
Braz. j. med. biol. res
;
38(3): 375-379, mar. 2005. ilus
Article
in English
| LILACS
| ID: lil-394807
ABSTRACT
Exclusion of the transcription factor Max from the nucleus of retinal ganglion cells is an early, caspase-independent event of programmed cell death following damage to the optic axons. To test whether the loss of nuclear Max leads to a reduction in neuroprotection, we developed a procedure to overexpress Max protein in rat retinal tissue in vivo. A recombinant adeno-associated viral vector (rAAV) containing the max gene was constructed, and its efficiency was confirmed by transduction of HEK-293 cells. Retinal ganglion cells were accessed in vivo through intravitreal injections of the vector in rats. Overexpression of Max in ganglion cells was detected by immunohistochemistry at 2 weeks following rAAV injection. In retinal explants, the preparation of which causes damage to the optic axons, Max immunoreactivity was increased after 30 h in vitro, and correlated with the preservation of a healthy morphology in ganglion cells. The data show that the rAAV vector efficiently expresses Max in mammalian retinal ganglion cells, and support the hypothesis that the Max protein plays a protective role for retinal neurons.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Parvoviridae
/
Retinal Ganglion Cells
/
Gene Expression Regulation, Viral
/
Basic Helix-Loop-Helix Leucine Zipper Transcription Factors
/
Genetic Vectors
Type of study:
Risk factors
Limits:
Animals
Language:
English
Journal:
Braz. j. med. biol. res
Journal subject:
Biology
/
Medicine
Year:
2005
Type:
Article
/
Congress and conference
/
Project document
Affiliation country:
Brazil
/
United States
Institution/Affiliation country:
Universidade Federal do Rio de Janeiro/BR
/
University of Florida College of Medicine/US
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