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Ingie Hong Profile
Ingie Hong

@Ih_current

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212

brain scientist and tool developer at Johns Hopkins.

Balitmore, Maryland
Joined June 2010
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@Ih_current
Ingie Hong
7 months
Now published in PNAS! Congrats to my amazing colleagues Julia and Blaise & postdoctoral mentor Rick! https://t.co/Vqgd0tfWbw Here we've dissociated enzymatic vs structural roles of SYNGAP1 in excitability and seizures. This will inform treatment development for this NDD!
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pnas.org
SYNGAP1 is a key Ras-GAP protein enriched at excitatory synapses, with mutations causing intellectual disability and epilepsy in humans. Recent stu...
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@Ih_current
Ingie Hong
10 months
Congrats to my dear colleagues Julia Brill, Blaise Clarke, and Rick Huganir! And thanks to the many people who helped with this research. Lastly, thanks to @cureSYNGAP1 and all Syngapian families who inspired our science.
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@Ih_current
Ingie Hong
10 months
Seizures and epilepsy are serious symptoms of #SYNGAP1 syndrome, which arises from LoF mutations in the gene. Our finding has important implications in the treatment of this condition because it shows that the structural role of SYNGAP1 will need to be rescued by therapies.
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@Ih_current
Ingie Hong
10 months
This unexpected structural role was discovered when @yoichi_araki made GAP-deficient* mutant Syngap1 mice & explored LLPS with other molecules. GAP-regulation of intrinsic excitability builds on earlier findings by @GavinRumbaugh & establishes SYNGAP1 as a bifunctional molecule.
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@Ih_current
Ingie Hong
10 months
Excited to share our new preprint on #SYNGAP1 that shows how its enzymatic and structural role can be dissociated! The GAP activity is essential in increasing intrinsic excitability but does not contribute to the seizure protection SynGAP is important for. https://t.co/GtXg71P8oW
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@alexrives
Alex Rives
10 months
We're thrilled to present ESM3 in @ScienceMagazine. ESM3 is a generative language model that reasons over the three fundamental properties of proteins: sequence, structure, and function. Today we're making ESM3 available free to researchers worldwide via the public beta of an API
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@misaacson
Matt Isaacson
11 months
Our paper on MouseGoggles - an open-source mini VR headset for mice - just came out! Really excited about finally integrating eye-tracking into the headset. Nice working with you @hongyu_chang! https://t.co/ok9iR01pnl https://t.co/zicNX2JEed
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@Ih_current
Ingie Hong
1 year
Amazing work by @Han_L_Tan! These BNC2 neurons shut down hunger before you can pronounce semaglut-. Lots of implications for understanding and treating obesity 🧠🍽️ #Neuroscience #ObesityResearch #Leptin
@Han_L_Tan
Han Tan
1 year
Thrilled to share our paper online @Nature (on my birthday)! We've identified a new population of LepR neurons (BNC2) in the hypothalamus ARC that acutely suppresses appetite by directly inhibiting AGRP neurons, decoding the missing LepR GABAergic neurons.
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@OneNeuroJHU
OneNeuro Initiative
1 year
Brain Molecule Makes Neurons Less Selective Deepening Understanding of Human Cognition—Findings from Johns Hopkins Medicine may help scientists better understand causes of autism, schizophrenia and epilepsy. “We've discovered that the calcium permeable subtype of AMPA receptors
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@Ih_current
Ingie Hong
1 year
Lastly a shoutout to the amazing undergrad interns @jojo_zn_yang david.cheon @MichaelAyad10 johnson.moran who made jaw-dropping images like this that inspire us to explore more about forebrain architecture and circuit logic. Miss you guys!
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@Ih_current
Ingie Hong
1 year
Several tools we developed along the way, including large-capacity #AAV vectors including AAV-GluA2 shown below (at @Addgene soon), updated #retinotopy, and #FICSRseq which recovers PV interneurons and other cells vulnerable to dissociation! Kudos to @ThomasDWKim @SethBlackshaw
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@Ih_current
Ingie Hong
1 year
Computational modeling with the irresistible @JoramKeijser and @sprekeler narrowed down the potential methods that could contribute to this surprising role in selectivity. Intriguing predictions abound!
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@Ih_current
Ingie Hong
1 year
Remarkably, hippocampal PV neurons, which usually exhibit low spatial tuning, became more spatially selective after removing CP-AMPARs, indicating that CP-AMPARs suppress the feature selectivity of neurons beyond vision. @thainmueller and @bartos_marlene don't mess around.
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@Ih_current
Ingie Hong
1 year
Interestingly, excitatory-PV interneuron connectivity rates and unitary synaptic strength were unaltered by CP-AMPAR removal, suggesting that the selectivity of PV interneurons can be altered without drastically changing connectivity. Kudos to Juhyun Kim and @brownlaboratory!
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@Ih_current
Ingie Hong
1 year
Replacing CP-AMPARs in PV interneurons with calcium-impermeable AMPARs increased their orientation selectivity in the visual cortex. These experiments were inspired by @Agarwalneurolab over a beer years ago #happyhour
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@Ih_current
Ingie Hong
1 year
Many mammalian species express little NMDARs but abundant CP-AMPARs in PV neurons, suggesting this alternative dendritic Ca2+ source is important in their circuit role. Thanks @spark_neuro @fennamk @s_mccarroll @AllenInstitute for enabling cross-species studies!
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@Ih_current
Ingie Hong
1 year
Why are some neurons more selective than others? We report now in @Nature how calcium permeable-AMPA receptors in PV neurons make them less selective to sensory features https://t.co/Y7sXbtE8I3 Long live the geniuses behind this🧠🔍 https://t.co/87BqmXxYje @thainmueller @rhuganir
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@GoogleDeepMind
Google DeepMind
1 year
We’re presenting AlphaProteo: an AI system for designing novel proteins that bind more successfully to target molecules. 🧬 It could help scientists better understand how biological systems function, save time in research, advance drug design and more. 🧵 https://t.co/lx35RvplFr
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@ProfFeynman
Prof. Feynman
1 year
Make critical thinking a foundational subject in education. Teach students how to think critically, analyze information, and discern fact from fiction using scientific methods, creating a more discerning and informed society.
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@jinzhanglab
Jin Zhang Lab
1 year
Presenting KINACT, a new kinase activity integrator out now in Nature Communications, led by @WeiLin1113! Check it out at https://t.co/3WXmuUXKKZ
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