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Justin Perry - Perry Lab

@justinperryphd.bsky.social
991 followers 1.3K following 105 posts

Scientist @MSKCC | We study dead cell clearance / phagocytosis | #Immunology | #CellBiology | #Metabolism | views my own, not MSKCC. FreeCon Signatory. Alaskan.

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Justin Perry - Perry Lab @justinperryphd.bsky.social · 13/03/2026
You need to register for a free account which is sort of annoying. But this is a little interview on our recent microplastics paper in Live Science. www.livescience.com/health/micro...
livescience.com
Microplastics prevent immune cells from gobbling up germs
Microplastics might clog up immune cells, preventing them from fighting infections and clearing away dead cells, as well as reducing sperm counts.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 07/03/2026
interview: during my visit to CNIC, we discussed some of the lab's work and why it matters, as well as some broader points, like why I find it exciting that we are wrong all of the time. read more here -> www.cnic.es/en/noticias/...
cnic.es
Justin Perry: "In science, we are wrong all the time"
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
We are thankful for the support that allowed us to pursue this important but understudied (& underfunded) area, especially the NIH New Innovator Award (DP2). Also @mskcancercenter.bsky.social @wcm-imp.bsky.social @ahascience.bsky.social @hhmi-science.bsky.social @weillcornell.bsky.social
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
Although I was originally skeptical that there would be a meaningful effect of MPs on phagocytosis, it is now clear to me I was wrong & that additional, rigorous studies of the cellular and physiological consequences of these environmental pollutants (exposome) are needed. /16
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
Our fertility data raise important biological & epidemiological questions. We speculate that the cause of male infertility is multifactorial & likely includes both MP-related variables, such as time, type, & route of exposure to MPs, as well as MP-independent variables. /15
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
Collectively, our data demonstrate that MP accumulation disrupts both efferocytosis & inflammatory phagocytosis & suggests that ineffective efferocytosis may underlie some of the human pathologies thought to be caused by chronic MP exposure. /14
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
Excitingly, engineering macrophages with Glo1 significantly rescued MP-mediated efferocytosis impairments both in vitro and in vivo! /13
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
We next had the crazy idea that, maybe, we could give macrophages the ability to combat MGO accumulation by a process my colleague Kayvan Keshari coined 'metabolic engineering'. It turns out, there is an enzyme (called Glo1) that detoxifies MGO in cells. /12
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
Strikingly, we found increased “MGOylation” (MGO binding) of proteins, including the enzyme G6PD. G6PD is required for efficient degradation of engulfed dead cells. /11
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
We sought to learn how MPs are causing these defects. The results were striking: The presence of MPs in macrophages engulfing dead cells accumulated the metabolite methylglyoxal (MGO). MGO forms Advanced Glycation End Products, associated w/ many chronic diseases @seckennedy.govpeeps.us /10
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
Scarily, these effects were not limited to efferocytosis, as MPs also suppressed bacterial, fungal, & antibody-mediated phagocytosis in vitro as well as the phagocytic uptake and killing of A. fumigatus (a fungal infection model) in the lungs of mice in vivo. /9
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
Using multiple mouse models, we found MP exposure disrupted efferocytosis in the lung, liver, and testis in vivo, negatively affecting each tissue. In the case of the testes, this caused decreased fertility in male mice /8
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
Specifically, we found that both mouse & human macrophages exposed to MPs internalize fewer dead cells & have significantly delayed digestion of engulfed dead cells in vitro (e.g. alveolar macrophages shown in the image above). /7
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
Previous studies have shown that your body's macrophages can eat MPs. However, if & how these MPs affect efferocytosis is unknown. Here, we report the alarming finding that exposure to MPs significantly impairs efferocytosis in multiple mice tissues & by human macrophages. /6
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
One of these essential tasks, the phagocytosis of dead cells (we call it 'efferocytosis'), is the process by which our phagocytes literally engulf your body's dead cells, something that happens as often as 3 million times per second! You can imagine why this matters. /5
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
These MPs, commonly ingested or inhaled via environmental exposure, first encounter professional phagocytes, such as macrophages (the body's 'big eaters'), that live in all tissues of the body and perform essential tasks. /4
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
Plastics are a ubiquitous part of everyday life, but growing evidence suggests that the microparticles from plastic degradation, microplastics (MPs), pose a significant threat to human health. /3
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
Before beginning, this is the first paper from our lab under the new @hhsgov.govmirrors.com @seckennedy.govpeeps.us guidelines for open access. The link to the immediately free version is here: www.sciencedirect.com/science/arti... /2
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 24/02/2026
Those who know me, know I’m not someone who changes his preferences & behaviors lightly. As Ron Swanson said, “I regret nothing. The end.” Well, let me tell you about our new study, out from The Perry Lab @mskcancercenter.bsky.social in @cp-immunity.bsky.social, which is the exception. /1
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 20/12/2025
Perry Lab has published 4 high-profile papers (w/ 5th accepted) in 6 yrs since lab opened yet still can't seem to catch a break/benefit of the doubt at NIH study sections. High-risk research has turned out to be a double-edged sword. I'm now questioning my choices.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 06/10/2025
It does raise the question of why the thymus hate? There should be a campaign to stop the thymus hate!
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 28/09/2025
I think my lab works on immunometabolism 🤔🤷‍♂️🤣
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 20/09/2025
Yuval Levin: Have an Argument. Disengagement—not disagreement—is the real failure of our politics. www.thefp.com/p/yuval-levi...
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 10/09/2025
If you can't say that political violence, especially murdering someone in cold blood because you disagree with them, is not only morally wrong but anathema to a free country, then I would encourage you to immediately log off and take time for self-reflection.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 09/09/2025
Cool! Have you built in a way to integrate published phenotypes?
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 08/09/2025
I was interviewed by Nick Jahomes on the Mind & Matter podcast about our study in @nature.com. Nick does a great job asking questions & explaining nitty gritty. Please take time to listen to the episode & if you like it, consider supporting Nick's efforts. mindandmatter.substack.com/p/fructose-m...
open.substack.com
Fructose, Microglia, Anxiety & Brain Development | Justin Perry | 249
Cellular clean up by immune cells and how early-life fructose exposure leads to neurodevelopmental problems.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 05/09/2025
Here's what I assume the study is in re: acetaminophen. It's a statistical analysis of a few dozen studies, to be clear, where the majority (especially the high quality ones) show a positive association. Reputable investigators. ehjournal.biomedcentral.com/articles/10....
ehjournal.biomedcentral.com
Evaluation of the evidence on acetaminophen use and neurodevelopmental disorders using the Navigation Guide methodology - Environmental Health
Background Acetaminophen is the most commonly used over-the-counter pain and fever medication taken during pregnancy, with > 50% of pregnant women using acetaminophen worldwide. Numerous well-designed...
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 29/08/2025
What's the concern? They awarded it this most recent cycle. www.research.gov/grfp/Login.do
research.gov
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 07/08/2025
@wcm-imp.bsky.social @weillcornell.bsky.social @mskcancercenter.bsky.social
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 07/08/2025
Congratulations to Ana @anaccodo.bsky.social in my lab and the other awardees. It is a really great acknowledgement of excellent trainees doing cool science.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 28/07/2025
Makes me miss the talented people back home in AK. Was just back at Forest Fair, another reminder of how great it is there.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 26/07/2025
It's official. I'm happy to announce that I have been promoted to Associate Member @mskcancercenter.bsky.social. It is sincere when I say that this would not have been possible w/o the incredible work of the members of my lab. In fact, exciting news about them coming soon. Stay tuned.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 04/07/2025
Today we remember our founding & the principles that this great nation was built on, that although we do not always live up to its ideals, it is those ideals, especially the liberty that pluralism affords, that will remain a beacon of hope for a more perfect union. As Madison wrote in Federalist 10:
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 02/07/2025
Interesting. Congrats.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 18/06/2025
New from @masslab.bsky.social @unibonn.bsky.social @immunosens.bsky.social out @natureportfolio.nature.com also shows maternal diet affects offspring macrophage function & disease susceptibility. Mass Lab study: www.nature.com/articles/s41... Our study: rdcu.be/eqx2G
nature.com
Kupffer cell programming by maternal obesity triggers fatty liver disease - Nature
In a mouse model, maternal obesity during pregnancy can lead to fatty liver disease in the offspring, driven by aberrant developmental programming of Kuppfer cells.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 11/06/2025
Update: Free-ish link: rdcu.be/eqx2G
rdcu.be
Early life high fructose impairs microglial phagocytosis and neurodevelopment
Nature - Exposure of mice to high fructose during gestation or early postnatal life causes decreased microglial phagocytosis during brain development and leads to anxiety-like behaviour in...
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 11/06/2025
3) A bit hidden in the supplement, but we propose a mostly-observational, not at all proven, mechanism of action in which HK2 localization is responsible for the defect in phagocytosis and altered metabolism. Very excited to work on this and the role of GLUT5/fructose in aging!
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 11/06/2025
2) Quantitation of fructose in the brain and important clarification that our effect did not seem to be due to circulating- or CNS-derived glucose (polyol pathway) or circulating lactate.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 11/06/2025
What was new in the revision? A few things: 1) We created SLC2A5 (GLUT5) floxed mice to delete the transporter from myeloid cells during embryogenesis. This completely reversed the phagocytosis, metabolism, and behavioral phenotypes due to high fructose exposure.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 11/06/2025
@mskcancercenter.bsky.social has a nice writeup on it here: www.mskcc.org/news/high-fr... And we have a preprint here: pubmed.ncbi.nlm.nih.gov/37645894/ with an explainer here x.com/JustinPerryP...
mskcc.org
High-Fructose Diet Harms Neurodevelopment and Leads to Anxiety in Mice, MSK Study Finds
A new laboratory study from MSK is shedding light on the mechanisms by which high fructose consumption early in life may directly impact brain development and increase the risk of anxiety disorders la...
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 11/06/2025
Out today from The Perry Lab, our work suggesting how exposure to high fructose in pregnant mice or developing neonates directly affects neurodevelopment. In @natureportfolio.nature.com www.nature.com/articles/s41... @mskcancercenter.bsky.social @weillcornell.bsky.social.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 03/06/2025
Cool story. Wonder what this means when considering our finding that microglia (numbers defined by conventional protein markers, anyway) were surprisingly unaffected. rdcu.be/eoaRm What are these other factors? 🤔
rdcu.be
WNK1 mediates M-CSF-induced macropinocytosis to enforce macrophage lineage fidelity
Nature Communications - Tissue-resident macrophages (TRM) are important mediators of local immunity. Here the authors show that the deficiency or inhibition of a kinase, WNK1, unlinks macrophage...
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 02/06/2025
Naturally, lots of questions remaining, including about how WNK1 is actually functioning to inform macrophage lineage commitment. Nevertheless, excited to see this story out. It's one of the best I have ever been a part of. @edinuni-irr.bsky.social writeup is here: edin.ac/3FtYS5B
edin.ac
Cell ‘drinking’ and enzyme activation shape immune cell fate
New study shows that a specific growth factor causes early-stage immune cells (macrophage precursors) to ‘drink’, which activates a special enzyme. This cell drinking and enzyme activation determines ...
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 02/06/2025
5. Alissa then performed a whole bunch of experiments to demonstrate that WNK1 acts downstream of CSF1R (M-CSF receptor) to inform macrophage differentiation.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 02/06/2025
4. M-CSF-stimulated macropinocytosis is required for differentiation of myeloid progenitors into macrophages🤯.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 02/06/2025
3. M-CSF stimulates macropinocytosis across all myeloid progenitor and monocyte populations. Props to Alissa for setting up this beautiful system to analyze macropinocytosis in non-adherent cells.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 02/06/2025
2. 2. Neonatal and hematopoietic myeloid progenitors (MPs) lacking WNK1 (or with WNK kinase inhibited) differentiate into neutrophils instead of macrophages in response to M-CSF🤯. Also true for human MPs. Monocytes lacking WNK1 also fail to differentiate into macrophages.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 02/06/2025
The paper is a behemoth, including a ton of interesting data in the supplement. Out of the interest of time, I will sum it briefly. 1. Mice that conditionally lack WNK1 under a CSF1R promoter-driven Cre die by 4 weeks of age because the lack tissue-resident macrophages.
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 02/06/2025
New study by Alissa Trzeciak in The Perry Lab @mskcancercenter.bsky.social is out! The best way to explain the journey is if I compared it to the Director's Cut of the Lord of the Rings trilogy. Let's just say, it wasn't submitted in March 2025. Link: rdcu.be/eoaRm Writeup: edin.ac/3FtYS5B
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Justin Perry - Perry Lab @justinperryphd.bsky.social · 28/05/2025
Embarrassingly slow to post this, but The Perry Lab @mskcancercenter.bsky.social has graduated its first PhD student! It was a great couple of weeks for Shasha, a @weillcornell.bsky.social IMP student. He received The Schmidt Science Fellowship, had his paper accepted (out soon), and defended!
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