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Schoderboeck L, Wicky HE, Abraham WC, Hughes SM. Genetic Targeting and Chemogenetic Inhibition of Newborn Neurons. Hum Gene Ther Methods 2018; 29:259-268. [PMID: 30526082 DOI: 10.1089/hgtb.2018.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The aim of this study was to develop a method to silence a very specific set of cells in a spatially and temporally refined manner. Here, an approach is presented that combines the use of a transgenic mouse line, expressing cre recombinase under a nestin promoter, with lentiviral delivery of a floxed, ivermectin (IVM)-gated chloride channel construct to the dentate gyrus. This approach was used to express an IVM-sensitive chloride channel in newly born granule cells in adult mouse brains, and its ability to silence neuronal activity was tested by analyzing the effect on immediate early gene expression in vitro in cre-transgenic primary neuronal cultures. IVM treatment of cells expressing the chloride channel prevented gabazine-induced expression of the immediate early gene product EGR1, while cells expressing a control inactive channel or no channel retained their EGR1 response. Thus, a genetic strategy is presented for targeting a specific neurogenic niche for transgene expression in the adult mouse brain, and proof of principle is shown that it can be used in vitro as a method for silencing neuronal activity.
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Affiliation(s)
- Lucia Schoderboeck
- Department of Biochemistry, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand.,Department of Psychology, University of Otago, Dunedin, New Zealand.,Brain Health Research Centre and Brain Research New Zealand, and University of Otago, Dunedin, New Zealand.,Genetics Otago, University of Otago, Dunedin, New Zealand
| | - Hollie E Wicky
- Department of Biochemistry, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand.,Brain Health Research Centre and Brain Research New Zealand, and University of Otago, Dunedin, New Zealand.,Genetics Otago, University of Otago, Dunedin, New Zealand
| | - Wickliffe C Abraham
- Department of Psychology, University of Otago, Dunedin, New Zealand.,Brain Health Research Centre and Brain Research New Zealand, and University of Otago, Dunedin, New Zealand
| | - Stephanie M Hughes
- Department of Biochemistry, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand.,Brain Health Research Centre and Brain Research New Zealand, and University of Otago, Dunedin, New Zealand.,Genetics Otago, University of Otago, Dunedin, New Zealand
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