Matt Wanat

@mattjwanat.bsky.social

Nerding out to neuroscience since 2002. Studying the neurobiology of motivated behavior by day. Running, hiking, eating, and camping by night. www.wanatlab.org

🚨Happy to share a new preprint from Lerner Lab led by graduate student @nadelneurosci.bsky.social! 🚨 “Adolescent stress recruits a latent amygdala-dopamine circuit to drive punishment-resistant reward-seeking” This has been a wholly impressive effort by Jacob; summary below 👇 #neuroskyence🧪

bioRxiv Neuroscience@biorxiv-neursci.bsky.social · 3d ago

Adolescent stress recruits a latent amygdala-dopamine circuit to drive punishment-resistant reward-seeking https://www.biorxiv.org/content/10.64898/2026.07.29.741478v1

Very excited about this new preprint from @odrake.bsky.social, an incredibly talented MD/PhD student in the lab. 🧵 below, but the TL;DR: we found a rare striatal neuron subtype with unique transcriptional, spatial, and circuit properties that gates opioid reward.

Olivia Drake@odrake.bsky.social · 6d ago

Our new preprint from @daylab.bsky.social characterizes Chst9-MSNs, a specialized NAc population with high Oprm1 expression and opioid sensitivity that is required for fentanyl reward learning. Excited to share this work! 🧠🧬 www.biorxiv.org/content/10.6...

Our new study ⬇️inspired by the question: does psilocybin influence meta-learning and cortical processing of unexpected uncertainty? Why is this important? Meta-learning may be critical for therapeutic effects of psychedelics and how the trip creates a window that facilitates clinical intervention

Dopamine and sodium appetite! Sodium appetite causes a 'sign change' in the taste of hypertonic NaCl solutions. We've previously shown that generation of the appetite recruits phasic dopamine to the taste of NaCl; here we show the 'derecruitment' process during satiation.

bioRxiv Neuroscience@biorxiv-neursci.bsky.social · 2w ago

Rapidly decreasing phasic dopamine responses precede a hedonic switch during satiation of sodium appetite https://www.biorxiv.org/content/10.64898/2026.07.16.738888v1

Fresh from the Castro Lab! We characterize how mu opioid receptors on pancreatic alpha cells regulate ingestive phenotypes. Surprise! Mu can act both inside and outside the brain😱 Congrats to our technician Diego De Gregorio! @ssibsociety.bsky.social www.sciencedirect.com/science/arti...

Pancreatic mu opioid receptors regulate metabolism and ingestive behaviors

The mu opioid receptor system has long been recognized for its role in regulating ingestive behaviors and food palatability. However, beyond their rob…

sciencedirect.com

Excited to share this new Addiction Neuroscience Special Issue on Transcriptomics in Addiction. Edited by Laura Saba and Dayne Mayfield with articles from Ana-Clara Bobadilla, Ryan Logan, Giordano de Guglielmo, José Sotelo-Silveira, and Tamara Phillips labs. www.sciencedirect.com/special-issu...

Addiction Neuroscience | The Role of Transcriptomics in Addiction | ScienceDirect.com by Elsevier

The generation of RNA transcripts in a cell is one of the first opportunities for interaction between DNA sequence and the environment (both at the organism and cellular level). Although many RNA transcripts get translated into proteins that are active in the cell, many other types of transcripts play critical roles in both the transcription and translation processes and ultimately, in how our bodies respond to our environment. Brain transcriptomics has the potential to mediate our acute responses to drugs of abuse and to reflect the changing cellular environment across the addiction cycle. Furthermore, RNA-based therapeutics are emerging as a significant treatment resource for many diseases. However, our knowledge about non-coding RNA transcripts, differences in transcript processing, and the interdependence among networks of transcripts is far from complete. This Special Issue features novel research into the role of transcriptomics and epigenetics in the neuroscience of addiction including predisposing factors and changing molecular phenotypes across the addiction cycle with the ultimate goal of identifying novel treatment and prevention approaches.

sciencedirect.com

NIH grants have been under political scrutiny since early 2025. But what does the screening process actually look like? What is being flagged? I spent a month digging into leaked docs and emails. We've published the 235-word list that are being flagged by an internal AI tool. And so much more. 🧵

Inside the new political screening that’s stalling NIH grants

Mandatory reviews by top health officials and checks for 235 disfavoured terms have left hundreds of vetted grant applications in administrative limbo.

nature.com

I'm looking to hire a research technician/lab manager. This role is ideal for someone looking to gain experience and independence after undergraduate research on their way to graduate school. Please encourage anyone interested to apply: hr.myu.umn.edu/jobs/ext/374... (job code 374183)

Careers

The Fraser Lab at the University of Minnesota (https://fraserlab.psych.umn.edu/) is recruiting a full-time research technician to support the lab. As a part of the Department of Psychology we are involved in the greater neuroscience research community at the University of Minnesota which provides excellent access to training and professional development. The Fraser Lab is interested in the neurobiological basis of motivated behavior and investigates how defined brain circuits contribute to behavioral regulation. We make use of modern neuroscience approaches to record and manipulate neural activity in real-time as rodents perform complex behavioral tasks to relate precise aspects of neural activity to well-defined psychological processes. To do so, we regularly use optogenetics, chemogenetics, calcium imaging, biosensors, pharmacology, and immunohistochemistry. Our ultimate goal is to decipher the neural mechanisms regulating behavior and to characterize how these are altered in psychiatric illness, such as addiction, or by differences in lived experience, such as after early life adversity, to potentially identify novel therapeutics. We seek a team member who can play a lead role in lab operations, collaborate closely with the PI, and engage in team-building and growth.Duties:Laboratory logistics, maintenance and operations (30%):

hr.myu.umn.edu

Really excited to finally have this paper published 🎉🎊. A true team effort spanning many years and multiple lab members. Special thanks to former MS student Amanda Salazar for launching the project and current PhD student Tatiyana Adkins for leading the final push. Proud of everyone who contributed!

SfN Journals@sfnjournals.bsky.social · 2mo ago

#JNeurosci: Adkins et al. explored how binge alcohol exposure and protracted abstinence impact the S1-insular circuit in mice, revealing how alcohol can reshape sensory processing to drive alcohol use disorder-related behavior. https://doi.org/10.1523/JNEUROSCI.1588-25.2026

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

First Castro Lab paper, brought to you by the hard work of Dr. Kathryn Braden @katybraden.bsky.social In this manuscript we investigate the role of endogenous enkephalin or dorsal raphe nucleus. We find that it is incredibly important for buffering negative affect 😱 www.nature.com/articles/s41...

Dorsal raphe nucleus enkephalin peptide modulates behavioral preference - Neuropsychopharmacology

Neuropsychopharmacology - Dorsal raphe nucleus enkephalin peptide modulates behavioral preference

nature.com