Abstract
In the inferior colliculus, adeno-associated virus (AAV) vectors are capable of gene transfer and stable, long-term expression, but it remained to be shown if this in vivo gene transfer could alter focal seizure sensitivity in the inferior colliculus. Because GABA receptors directly modulate inferior collicular seizures, AAV vectors were constructed with a cytomegalovirus (CMV) promoter and a truncated, human GABA A α 1 cDNA in both the sense and antisense orientations. Seven days after collicular microinjection of the sense vectors (1 μl; 3×10 9 particles/ μl), neurons exhibited GABA A α-like immunoreactivity in amounts far exceeding endogenous concentrations. Unilateral or bilateral sense vector infusion had no effect on inferior collicular seizure parameters or on [ 3H]zolpidem binding. In contrast, bilateral infusion of the antisense AAV-GABA A α 1 vector (1 μl; 3×10 8 particles/ μl) caused a 137% increase in the seizure duration. Moreover, unilateral antisense vector infusion produced a localized, 48% decrease in [ 3H]zolpidem binding. Thus, in the inferior colliculus, antisense AAV-CMV vectors can reduce a specific receptor subunit protein and change receptor function that directly influences in vivo seizure sensitivity.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.