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Conditionally immortalized cell lines, engineered to produce and release GABA, modulate the development of behavioral seizures.

Abstract：

:Transplantation of genetically engineered cells can provide sustained focal delivery of naturally occurring molecules, including neurotransmitters and growth factors. We have engineered immortalized mouse cortical neurons and glia to deliver GABA by driving GAD(65) expression. Engineered cell lines showed GAD(65) mRNA expression, enzymatic activity, and GABA release. In vitro, basal flux of GABA was approximately 20% of total cellular GABA. We transplanted these GABA-producing cells bilaterally into either the anterior or the posterior substantia nigra of 43 rats. The rats were subsequently kindled through an electrode placed in the entorhinal cortex. GABA-producing cells, but not beta-galactosidase-producing cells, affected kindling rates. The number of stimulations needed to reach the first stage-5 seizure and to achieve full kindling differed significantly between the anterior and posterior transplantation sites when GAD(65)-producing cells were transplanted but not when beta-galactosidase-producing cells were transplanted. Our data show that transplanted engineered cells can make and release GABA at physiologically meaningful concentrations.

journal_name

Exp Neurol

journal_title

Experimental neurology

authors

Thompson K,Anantharam V,Behrstock S,Bongarzone E,Campagnoni A,Tobin AJ

doi

10.1006/exnr.1999.7305

keywords:

subject

Has Abstract

pub_date

2000-02-01 00:00:00

pages

481-9

issue

2

eissn

0014-4886

issn

1090-2430

pii

S0014-4886(99)97305-3

journal_volume

161

pub_type

杂志文章

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