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Cognitive impairments in adult mice with RIP140 overexpressio
A Cre-dependent AAV was used to selectively overexpress RIP140. (From BrainVTA)
The viruses used from BrainVTA in this article are in the table below
Custom-Made AAVs  rAAV2/9- nEF1a-DIO- RIP140-Flag-WPREs
Xinjuan Wang, Shimeng Ren, Weidong Yu, Qing Mu, Shuai Ye, Cailian Cui, Jingzhu Guo
Pub Date: 2020-06-21, DOI: 10.1016/j.bbr.2020.112777, Email: [email protected]
Receptor-interacting protein 140 (RIP140) is a transcription co-regulator of several transcription factors and a signal transduction regulator. RIP140 was recently implicated in the regulation of cognitive functions. The gene that encodes RIP140 is located on chromosome 21. An increase in RIP140 expression was observed in the fetal cerebral cortex and hippocampus in Down syndrome patients who exhibited strong cognitive disabilities. We hypothesized that RIP140 overexpression affects cognitive function in adult neural development. The present study used a Cre-dependent adeno-associated virus to selectively overexpress RIP140 in neural stem cells using nestin-Cre mice. RIP140 overexpression efficiency was evaluated at the subgranular zone (SGZ) of the dorsal dentate gyrus (dDG) and the subventricular zone (SVZ) of the lateral ventricles (LVs). Mice with RIP140 overexpression in the SGZ exhibited deficits in cognitive function and spatial learning and memory, measured in the Morris water maze, object-place recognition test, and novel object recognition test. However, overexpression of RIP140 in SVZ only impaired performance in the Morris water maze and novel object recognition test but not in the object-place recognition test. Altogether, these results indicated defects in cognitive functions that were associated with RIP140 overexpression in neural stem cells and revealed a behavioral phenotype that may be used as a framework for further investigating the neuropathogenesis of Down syndrome.

Figure 1. Selective RIP140 overexpression in neural stem cells in the SVZ and SGZ by Cre-dependent viral vector.
This study is aimed to explore whether RIP140 overexpression affects cognitive function in adult neural development. The authors overexpressed RIP140 selectively in neural stem cells (NSCs) in adult mice to better study the effect of RIP140 overexpression on neural development. They uncovered a major role for RIP140 in the central nervous system in processes that are involved in cognitive function from a neurodevelopmental perspective.
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