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
Artículo
en Inglés
| 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.
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Índice:
LILACS (Américas)
Asunto principal:
Parvoviridae
/
Células Ganglionares de la Retina
/
Regulación Viral de la Expresión Génica
/
Factores de Transcripción Básicos con Cremalleras de Leucinas y Motivos Hélice-Asa-Hélice
/
Vectores Genéticos
Tipo de estudio:
Factores de riesgo
Límite:
Animales
Idioma:
Inglés
Revista:
Braz. j. med. biol. res
Asunto de la revista:
Biologia
/
Medicina
Año:
2005
Tipo del documento:
Artículo
/
Congreso y conferencia
/
Documento de proyecto
País de afiliación:
Brasil
/
Estados Unidos
Institución/País de afiliación:
Universidade Federal do Rio de Janeiro/BR
/
University of Florida College of Medicine/US
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