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Investigating Drivers of Antireward in Addiction Behavior with Anatomically Specific Single-Cell Gene Expression Methods
Published on: August 4, 2022
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Neuronal RNA-binding protein HuD regulates addiction-related gene expression and behavior
R J Oliver1, J L Brigman1, F Bolognani2
1Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, New Mexico.
Genes, Brain, and Behavior
|December 29, 2017
Summary
The neuronal protein HuD regulates genes linked to addiction-like behaviors. Overexpressing HuD enhances cocaine-induced place preference, suggesting HuD
Area of Science:
- Neuroscience
- Molecular Biology
- Addiction Research
Background:
- The neuronal RNA-binding protein HuD (HuD) is crucial for synaptic plasticity, learning, and memory.
- HuD influences plasticity by stabilizing and translating target messenger RNAs (mRNAs).
- Addiction is characterized by altered gene expression leading to aberrant synaptic plasticity.
Purpose of the Study:
- To investigate the role of HuD in drug addiction mechanisms.
- To identify HuD-regulated genes and networks associated with addiction-like behaviors.
- To test HuD's involvement in cocaine conditioned place preference (CPP).
Main Methods:
- Bioinformatics prediction algorithms and microarray analyses were used to identify HuD-regulated genes in HuD overexpressing (HuDOE) mice.
- Analysis focused on genes within the knowledgebase of addiction-related genes (KARG) with predicted HuD-binding sites.
- Cocaine CPP model was employed in wild-type and HuDOE mice to assess addiction-related behaviors.
Main Results:
- HuD regulates networks associated with addiction-like behavior, including validated targets such as Bdnf and Camk2a.
- Cocaine CPP upregulated HuD mRNA and protein in the nucleus accumbens of wild-type mice, alongside increased Bdnf and Camk2a expression.
- HuDOE mice exhibited enhanced cocaine CPP compared to controls, with elevated expression of HuD target genes (CaMKIIα and BDNF).
Conclusions:
- HuD plays a significant role in addiction-related behaviors, specifically in cocaine conditioning and seeking.
- HuD influences these behaviors by modulating the expression of plasticity-related genes.
- Targeting HuD may offer a novel therapeutic strategy for addiction treatment.
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