Robert Phillips

@rphillips3.bsky.social

Neuroscientist interested in cross-species conservation of cell types and circuits | Postdoc in Martinowich lab at Lieber Institute for Brain Development | PhD with Day Lab at UAB

Notice of Award Monday! Grateful to NIDA for supporting some very exciting work defining the cellular and circuit mechanisms that opioids target to produce rewarding effects.

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I am so proud of the whole team, and excited for next steps. We are already building on these discoveries by examining spatial organization of D1 islands across the full anatomical extent of the NAc and integrating molecular maps with functional mouse circuit and behavior studies. So excited!!

Some AMAZING high resolution spatial transcriptomics data in human brain to better understand localization, composition and origin of the D1 islands - more to come!

Glucose-Dependent Insulinotropic Polypeptide Receptors Are Expressed in the Lateral Septum and Reduce Electrically-Evoked Dopamine Release as well as the Ability of Cocaine to Increase Extracellular Dopamine | ACS Chemical Neuroscience pubs.acs.org/doi/10.1021/...

Glucose-Dependent Insulinotropic Polypeptide Receptors Are Expressed in the Lateral Septum and Reduce Electrically-Evoked Dopamine Release as well as the Ability of Cocaine to Increase Extracellular Dopamine

Tirzepatide, a dual agonist of the glucagon-like peptide 1 receptor (GLP-1R) and glucose-dependent insulinotropic polypeptide receptor (GIPR), represents a new class of medication for obesity and type II diabetes treatment. Using laboratory mice, we show that GIPRs are present in the lateral septum (LS) in cells also expressing GLP-1R, particularly in the dorsolateral LS. Likewise, we show the coexpression of the dopamine (DA) D2 receptor (DRD2) in LS cells with GLP-1R in both the dorsolateral and intermediate portions of the LS. Using fast-scan cyclic voltammetry, we demonstrate that systemic GLP-1R or GIPR agonist treatment reduces both electrically evoked DA release in the LS and the ability of cocaine to increase extracellular DA levels. These data unveil a new central role for GIPR signaling and identify a potentially important cell type expressing both GLP-1R and GIPR upon which tirzepatide or other dual agonists may modulate DA homeostasis in the brain.

pubs.acs.org

DREADDs in humans--update: 3 clinical trials using hM4Di in humans registered in China. 2 for epilepsy and 1 for Parkinson's Disease. In our original paper we stated: "...We suggest that at least one of these designer receptors, hM4D, will prove useful for neuronal silencing in vitro and in vivo.."

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This work is now available online in @elife.bsky.social - thanks to the reviewers for excellent comments! Check it out if you are interested in the intersection of pain, opioids, and the ventral tegmental area! elifesciences.org/reviewed-pre...

Morphine regulates astrocyte transcriptional dynamics in the ventral tegmental area by stimulation of glucocorticoid signaling

elifesciences.org

Jeremy Day@daylab.bsky.social · 11mo ago

Excited to share this new work from the lab, in collaboration with @jtuscher.bsky.social & Rob Sorge! Here, we used single cell transcriptional profiling to define molecular adaptations induced by chronic pain and opioid experience, which often occur in conjunction. www.biorxiv.org/content/10.1...

As a recipient of federal grants from #NIH (for now! 😭) that funds research in my lab, I'd like to sincerely thank American taxpayers on #TaxDay for investing in scientific research that lays the foundation for medical and technological innovation in this country and keeps us ALL safe and healthy

Restaurants, billboards, commercials… what brain circuits link context to appetite? 🧠🌎🍽️ Very happy to finally share a major update in our work exploring the hippocampus and lateral septum in calibrating food consumption! 🍩 Major thanks to our lab and collaborators! ⭐️⭐️ www.cell.com/neuron/fullt...

A dorsal hippocampus-prodynorphinergic dorsolateral septum-to-lateral hypothalamus circuit mediates contextual gating of feeding

Goode et al. show that prodynorphin (Pdyn)-expressing neurons of the dorsolateral septum (DLS) receive substantial dorsal hippocampal (DHPC) input and inhibit lateral hypothalamic (LHA) GABAergic neur...

cell.com