⚡️GREG_CORDER⚡️
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flybottleescape.bsky.social
⚡️GREG_CORDER⚡️
@flybottleescape.bsky.social
Assistant Professor @ Penn | Dept Psychiatry + Dept Neuroscience + Dept Anesthesiology | Pain • Placebo • Poppies • Psychedelics

https://corderlab.com/
Now officially: Dr Rogers🎓✨
Unofficially: still the same Sophie.. with more letters + even more legend 🧠🍄💥

You crushed your thesis defense with equal parts science and soul. From psilocybin/psychedelics to pain + aversive processing in cortex you brought rigor, clarity and creative

Congrats 🍾
December 12, 2025 at 9:34 PM
@sfn.org Come say hi to postdoc Blake Kimmey Tues, Nov. 18, 8:00 AM - 12:00 PM

PSTR278.07 - Convergent state-control of endogenous opioid analgesia

He's got new behavior/DREADD/Xenium data on PAG-to-thalamic circuits in pain/placebo/fear, building from his preprint: biorxiv.org/content/10.1...
November 17, 2025 at 5:47 PM
FAAH inhibitors fail to replicate human KO reports. But check out the many cases of PAIN ASYMBOLIA that also suggest overlap between broad affective-motivational systems and “pain”(READ: unpleasantness) in BLA and posterior insula
September 25, 2025 at 12:20 AM
🙏 Please help!

ad nauseam topic but for new NIH n=6 submission policy is it:

a. 6 subs in 2025 calendar year = we can sub 6 R01s for Oct '25 + another 6 for Jan-Dec '26?

b. subs in Oct '25 w/ May '26 Council = we can sub 6 R01s Oct '25 to June '26; count resets Oct '26?
September 18, 2025 at 6:20 PM
August 8, 2025 at 6:47 PM
11. Last, using projection-specific + nociceptive intersectional chemogenetics we linked this BLA-->NAcSh cell-type to acute and chronic pain affective-motivational behaviors
July 24, 2025 at 2:02 PM
10. BLA-noci axon-photometry over the NAcSh-noci ensemble showed nociceptive transmissions.

In fact, light-touch information used this nociceptive amygdala-striatal pathway during chronic pain states, indicating a role in aversion to allodynia
July 24, 2025 at 2:00 PM
8. RNAseq suggested chronic pain alters to downstream axon regulation + signaling. We examined the projection targets of the BLA-noci ensemble to correlate axon density with brain-wide nociceptive hotspots

… we found one very interesting hit—the nucleus accumbens shell (NAcSh)
July 24, 2025 at 1:59 PM
7. But how does chronic pain impact the BLA transcriptomic landscape?

Next, comparing uninjured vs neuropathic injured groups we discovered multiple up/down-regulated genes that we are now exploring for therapeutic targeting
July 24, 2025 at 1:57 PM
6. We subset the Rspo2+ neurons into IEG+ clusters responsive to noxious or innocuous stimuli and found functional heterogeneity in this “(-)valence” cell-type.

We found new markers for nociceptive nuclei, eg Htr2a—a target of psychedelics that we're now exploring for analgesia
July 24, 2025 at 1:56 PM
5. A functional ensemble is not just one molecular cell-type right? Gene markers are proposed for (-)valence—Rspo2 + Fezf2

Using snRNAseq we mapped noxious immediate early genes (IEGs) to find two subtypes of Rspo2+ neurons not expressing Fezf2 or other “valence markers”
July 24, 2025 at 1:55 PM
4. Chemogenetic activation of the BLA-noci ensemble drove conditioned place aversion in female TRAP2 mice only... extending similar BLA-noci activation studies with
@ishmailsaboor.bsky.social altering high-speed withdrawal responses selectively to noxious stimuli elifesciences.org/articles/57258
July 24, 2025 at 1:54 PM
3. Key, opto inhibition of the normal, acute-responsive BLA-noci ensemble is sufficient to selectively reduce behavioral signs of chronic pain weeks later, highlighting the stability of pain-processes for translational targeting, unlike representational drift in CS+ networks …
July 24, 2025 at 1:53 PM
2. In TRAP2 mice (*homozygous* Fos-iCre-ERT2), Jess gained genetic access to the BLA-noci ensemble to show an anatomic-functional architecture that persisted before and after the induction of chronic pain
July 24, 2025 at 1:52 PM
🙌🏼 For Jess !!!
July 23, 2025 at 8:17 PM
⚡️🧠A nociceptive amygdala-striatal pathway modulating affective-motivational pain

Now published on the cover of Science Advances @science.org

Check it out 👇
www.science.org/doi/10.1126/...
July 23, 2025 at 6:52 PM
Huge congrats to Dr. Lisa Wooldridge!

She crushed her PhD defense on central amygdala circuits in opioid dependence

Incredible science, relentless rigor, and a fearless approach to tough questions

So proud to be part of your journey, Lisa!

🧠🔥🎓🍾
July 1, 2025 at 11:35 PM
ran the rest of the comparison with RSC trace fear conditioning data
June 27, 2025 at 9:26 PM
sophie the student, ran the rest of the Kanter et al code ... see results summary 👇
June 27, 2025 at 9:25 PM
Yea I’m reporting this one
June 27, 2025 at 1:08 PM
Met w student in morning to discuss “time tiling” in imaging across fear conditioning

Saw this new paper in the evening, sent to student

Woke up to student’s reanalysis using open-source code from this paper …

= retrosplineal drift with sharp jumps at tone+shock pairings vs extinction tones
June 27, 2025 at 1:04 PM
🤮 more garbage takes in grant reviews .. we got a 5 and ultimately ND bc we have papers on bioRxiv that were to support the 20+ references for ACC/PAG/BLA roles in pain

.. punished for preprints, wtf
June 26, 2025 at 6:53 PM
im also an alzheimer's researcher now too ... 😜

angry CD68+ microglia eating some X-34 dyed plaques
June 23, 2025 at 7:16 PM
Peer review is so fucked …

Reviewer 2: “Nice 5-year study. Now add 10–15 more years of data you’d need a second lifetime to collect and 3 R01s, and so I’m just gonna reject.”

Me: “Cool cool cool.. Maybe. Maybe not. Maybe go fuck yourself.”
June 19, 2025 at 9:38 PM
😈
June 5, 2025 at 12:01 AM