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Extended Amygdala-Parabrachial Circuits Alter Threat Perception to Control Feeding

ABSTRACT: Ribosome TRAP (affinity purification) from Glutamaterigc or GABAergic neurons of the Bed Nucleus Stria Terminalis (BNST) expressing Cre, enabling expression of a floxed TRAP reporter delivered by retrofecting AAV injected into the parabrachial nucleus (PBN) of mice.

ORGANISM(S): Mus musculus

PROVIDER: GSE133484 | GEO | 2021/03/02

REPOSITORIES: GEO

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Project description:To identify distinct transcriptional patterns between the major subcortical dopamine targets commonly studied in addiction we studied differences in gene expression between the bed nucleus of the stria terminalis (BNST), nucleus accumbens (NAc), and dorsal striatum (dStr) using microarray analysis. We first tested for differences in expression of genes encoding transcripts for common neurotransmitter systems as well as calcium binding proteins routinely used in neuroanatomical delineation of brain regions. This a priori method revealed differential expression of corticotropin releasing hormone (Crh), the GABA transporter (Slc6a1), and prodynorphin (Pdyn) mRNAs as well as several others between. Using a Gene ontology tool, functional scoring analysis, and Ingenuity Pathway Analysis, we further identified several physiological pathways that were distinct among these brain regions. These two different analysis both identified calcium signaling, G-coupled protein receptor signaling, and adenylate cyclase-related signaling as significantly different among the BNST, NAc, and dStr. The results support other studies suggesting that crucial pathways involved in neurotransmission are distinct among the BNST, NAc, and dStr, and provide insight into the potential use of pharmacological agents that may target region-specific signaling pathways. Further, these studies provide a framework for future mouse-mouse comparisons of transcriptional profiles after behavioral/pharmacological manipulation. Genome-wide microarray was used to detect gene expression. Global functional profile, transcritional networks and canonical pathways were illustrated from the gene expression patterns. Experiment Overall Design: The genome-wide gene expression of mouse brain region bed nucleus of the stria terminalis, nucleus accumbens, and dorsal striatum were analyzed by Affymetrix Mouse430_2 chip. The expression and functional profiles were compared between these 3 tissues and cross-validated from independant data published before.

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Extended Amygdala-Parabrachial Circuits Alter Threat Perception to Control Feeding

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