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Brett Garabedian, PhD

@brettgarabedian.bsky.social
387 followers 347 following 169 posts

Scientific Founder at Ablytx Inc (ablytx.com)

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Reposted by Brett Garabedian, PhD
Karl Deisseroth @deisseroth.bsky.social · 22h
Thank you to everyone sharing in this moment! I’m so grateful to all my trainees & collaborators… dlab.stanford.edu/group-members (pic: Peter and I together in 2017) Reading for all those asking: for technical details: dlab.stanford.edu for everyone: deisseroth.org/projections
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 17/09/2026
Regarding the latest whistleblower scare around rogue AI agents and the non-zero potential for catastrophic consequence, this podcast episode provides additional, striking color on the issue. @humanetech.bsky.social 👏
podcasts.apple.com
The Most Hopeful (And Concerning) Moment Yet in AI
Podcast Episode · Your Undivided Attention · September 17 · 21m
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Reposted by Brett Garabedian, PhD
Reese Richardson @reeserichardson.bsky.social · 30/08/2026
I've updated the original blog post to detail the response thus far from each company: reeserichardson.blog/2026/08/25/a... Sourced largely from coverage detailed in the thread below!
reeserichardson.blog
At least 15 companies are selling antibodies using faked validation data
Popular vendors’ catalogs feature more than 18,000 manipulated images
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 12/08/2026
This one cuts deep! If you think you have great science, a marketable product, and are ready to spin out a company, read this article ~10 times beforehand. Truer words never spoken davidhcrean.substack.com/p/runway-dil...
davidhcrean.substack.com
Runway, Dilution, and the Ten-Year Bet
So you think you want to start a biotech company. Read this first.
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 07/08/2026
www.linkedin.com/pulse/membra...
linkedin.com
The Membrane Is Crowded. Your Therapeutic Is Not Designed For It.
Data-Rich, Insight-Poor — CLXXVIII Most therapeutic design still runs on a clean cartoon. A receptor sticks out of a bare lipid plane.
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Reposted by Brett Garabedian, PhD
Waggoner Lab @labwaggoner.bsky.social · 06/08/2026
Fluid shear stress as a co-stimulatory cue to enhance T cell priming and restore activation in cancer patient T cells @J_Immunol academic.oup.com/jimmunol/art...
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 30/07/2026
“…we report that CD19, an assumingly exclusive B cell marker, is transferred via trogocytosis when B cells activate T cells” Trogocytosis is fascinating, and really complicates the picture for the targeting ‘mobile’ receptors. Same recently reported for Siglecs, and I’m sure many, many others
nature.com
B cell CD19 is transferred between immune cells in mice and humans - Nature Communications
Trogocytosis enables the transfer of membrane-bound antigens during pathogenic B-T cell interactions. Here, the authors utilize mouse and human cell models and demonstrate that the B cell marker CD19 ...
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Reposted by Brett Garabedian, PhD
Neil deGrasse Tyson @neildegrassetyson.com · 25/07/2026
Got 20 minutes? [Video: StarTalk's YouTube Channel] www.youtube.com/watch?v=dYiU...
youtube.com
America’s Scientists Are Disappearing
YouTube video by StarTalk
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Reposted by Brett Garabedian, PhD
Carolyn Bertozzi @carolynbertozzi.bskyverified.social · 24/07/2026
@dereklowe.bsky.social on point with no sugar coating 👏 👏 👏 www.science.org/content/blog...
science.org
The Assault On Science Funding Continues
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Reposted by Brett Garabedian, PhD
Rémi Hatinguais @remicillin.bsky.social · 15/07/2026
So happy our review is finally out in @natcancer.nature.com! Many glycans were mistreated in the making of the figures, although these were all caught by my co-authors, the proper glycobiologists #glycotime
rdcu.be
Immune implications and therapeutic opportunities of tumor glycosylation
Nature Cancer - In this Review, van Vliet and colleagues provide an overview of aberrant glycosylation as a hallmark of cancer cells, focusing on its impact for cancer immunity and therapeutic...
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 15/07/2026
www.nature.com/articles/s41...
nature.com
Targeting Siglec-engaging immunosuppressive sialoglycans to suppress prostate cancer bone metastasis - British Journal of Cancer
British Journal of Cancer - Targeting Siglec-engaging immunosuppressive sialoglycans to suppress prostate cancer bone metastasis
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Reposted by Brett Garabedian, PhD
Waggoner Lab @labwaggoner.bsky.social · 12/07/2026
CD22 is upregulated and displays suppressive properties on CD4+ T cells upon a persistent virus infection @jimmunol.bsky.social academic.oup.com/jimmunol/art...
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 03/07/2026
🤩 love this www.science.org/doi/10.1126/...
science.org
Membrane protein solubilization and structure determination using de novo–designed proteins
Developing therapies and vaccines against integral membrane proteins is hindered by their extensive hydrophobic surfaces, which complicate production and structural analysis. Here, we describe a gener...
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Reposted by Brett Garabedian, PhD
Dimitri Drekonja, MD, MS @dimitridrekonja.bsky.social · 11/06/2026
WE DON’T NEED A FUCKING TREATMENT WE HAVE A VACCINE THAT IS 97% EFFECTIVE AND COULD ERADICATE THE DISEASE IF WE DIDN’T HAVE ANTIVAX GRIFTERS LEADING US 🤦🏻‍♂️🤦🏻‍♂️🤦🏻‍♂️ www.nytimes.com/2026/06/11/w...
nytimes.com
With Measles Roaring Back, the Search for a Treatment is On
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 06/06/2026
As if research with validated reagents wasn’t hard already
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 03/06/2026
🤯 www.science.org/doi/10.1126/...
science.org
HIV-1 infection converts CD4+ T cells to HLA class II–restricted CD8+ T cells
HIV-1–driven CD4-to-CD8 T cell conversion results in a distinct cellular reservoir of viral persistence.
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Reposted by Brett Garabedian, PhD
Carolyn Bertozzi @carolynbertozzi.bskyverified.social · 31/05/2026
Excellent, concise summary of the threats of recent OMB proposal and suggested action items. DEADLINE TO SUBMIT PUBLIC COMMENTS IS JULY 13, 2026 AT 11:59 PM EASTERN TIME elizabethginexi.substack.com/p/what-we-ne...
elizabethginexi.substack.com
What We Need to do NEXT: OMB’s Proposed Federal Financial Assistance Rule (OMB-2026-0034)
What OMB’s Proposed Federal Financial Assistance Rule Means in Practice
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Reposted by Brett Garabedian, PhD
Mark Peifer (He, him) @peiferlabunc.bsky.social · 31/05/2026
This is right on target. If you know anyone in biotech and pharma, please speak with them www.biocentury.com/article/659615
biocentury.com
Pharma CEO silence is complicity in the destruction of U.S. science
Office of Management and Budget Director Russell Vought has poured gas on the foundations of science. Pharma CEOs should demand that President Donald Trump...
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Reposted by Brett Garabedian, PhD
Jeremy Berg @jeremymberg.bsky.social · 01/06/2026
"I'm trying to stay out of the water" says a man wearing a freshly purchased swimsuit, swim fins, and goggles...
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Reposted by Brett Garabedian, PhD
Reese Richardson @reeserichardson.bsky.social · 28/05/2026
TL;DR: We've identified more than 100 cases of apparent manipulation in Thermo Fisher Scientific's antibody verification data. @sholtodavid.bsky.social @johanduchene.bsky.social reeserichardson.blog/2026/05/28/h...
reeserichardson.blog
How much of Thermo Fisher’s antibody data has been manipulated?
We’ve documented more than 100 instances of apparent data manipulation in Thermo’s catalog
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Reposted by Brett Garabedian, PhD
Michael D. Green, PhD @michaeldgreen.phd · 28/05/2026
President of MIT not mincing words today in @statnews.com www.statnews.com/2026/05/27/s...
So let me say it as clearly as I can: Without basic scientific research, supported by the kind of farsighted public investment that allows large-scale, undirected, curiosity-driven inquiry, the scientific pipeline will run dry.
In daily life, people may not feel the effects right away, or even in 10 years. But we will feel it. And when someone we love needs therapies that could have emerged but didn't or when other countries now
investing in science can launch new science-based industries or run their societies on vast resources of fusion energy or reap the benefits of quantum computing power or advanced medical breakthroughs, America will wish it sustained its leadership in scientific research here and now.
Sally Kornbluth is the president of MIT.
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Reposted by Brett Garabedian, PhD
Carolyn Bertozzi @carolynbertozzi.bskyverified.social · 18/05/2026
The more we learn about #glycotime, the more dramatic will be our revisions to textbooks on such basic principles as protein trafficking and organelle privileges www.nature.com/articles/s41...
nature.com
Nuclear N-glycosylation maintains H3K9me3 heterochromatin and genomic stability - Nature Cell Biology
Tang, Dai, Qing, Zhang and colleagues describe a role for N-glycosylation in the nucleus: N-glycans modify inner nuclear membrane proteins, and the modification is implicated in the maintenance of H3K...
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 18/05/2026
www.science.org/doi/10.1126/...
science.org
PD-1 signaling and PD-1 blockade–mediated tumor control are established at microvillar T cell contacts
Microvillar contacts serve as sites of TCR and PD-1 signal integration, modulating T cell activation and tumor control.
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Reposted by Brett Garabedian, PhD
Ryan Flynn @raflynn5.bsky.social · 12/05/2026
Today was the first of its kind Symposium dedicated to #glycoRNAs and Cell Surface RNA biology. Tools and topics spanned cancer, immunology, and pathogenic infection - speaking to the growing excitement and impact of thinking about RNA at the interface between cells!
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 12/05/2026
“Here, we present extrabody, an activatable, modular antibody platform that enables optogenetic or chemical reassembly of split antibody fragments for inducible extracellular antigen recognition”
cell.com
An extracellular, optogenetic antibody platform for stimulus-gated antigen recognition and modulation of cell behavior
Precise control of antigen recognition remains a challenge in engineering cell-cell interactions. Kwon et al. develop extrabody, a split antibody platform that enables optogenetic and chemical control...
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Reposted by Brett Garabedian, PhD
Kristian G. Andersen @kgandersen.bsky.social · 12/05/2026
"Inquiry" "Criticism" "Sprawling Research" I swear to God @nytimes.com, future generations will look back at this time in history with you as an illustrative example. And it won't be kind.
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Reposted by Brett Garabedian, PhD
Aaron Rupar @atrupar.com · 09/05/2026
Sen. Ron Johnson claims preposterously that as many as 3.9 MILLION (!!!) Americans died as a result of the covid vaccine Complete insanity
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Reposted by Brett Garabedian, PhD
Carl T. Bergstrom @carlbergstrom.com · 08/05/2026
Happy 100th to a real one.
npr.org
David Attenborough celebrates his 100th birthday
He was born before the Great Depression, came of age in WWII, and is still making wildlife documentaries. Brits call David Attenborough a national hero, as he celebrates his 100th birthday.
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Reposted by Brett Garabedian, PhD
Craig M. Crews @craigmcrews.bsky.social · 09/05/2026
First PROTAC gains FDA approval, bolstering targeted protein degradation and induced proximity ambitions www.nature.com/articles/d41...
nature.com
First PROTAC gains FDA approval, bolstering targeted protein degradation and induced proximity ambitions
Discover the world’s best science and medicine | Nature.com
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 05/05/2026
"Using broad-spectrum photoaffinity probes, we identified more than 400 functionally diverse proteins whose ability to engage small molecules is impacted by phosphorylation or N-linked glycosylation status. " #glycotime @chrisgparker.bsky.social rdcu.be/fg3BY
rdcu.be
Posttranslational modifications remodel proteome-wide ligandability
Nature Chemical Biology - A chemoproteomic strategy reveals how posttranslational modifications reshape protein ligandability across the human proteome, uncovering more than 400 state-dependent...
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 01/05/2026
“An electrophilic s-TCO-NHS ester is initially used to pan-label the proteome prior to activation... Subsequently, antibody-photocatalyst conjugates are targeted to CD45 on the surface of live cells and used to locally catalyze the conversion of dihydrotetrazine molecules to reactive tetrazines.”
pubs.acs.org
Tunable Cell Surface Proximity Labeling via Photocatalytic and Enzymatic Activation of Fast Bioorthogonal Chemistry
Described is the use of photocatalytic and enzymatic activation of rapid bioorthogonal chemistry for cell surface proximity labeling. Current approaches to proximity labeling rely on the activation of...
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 01/05/2026
“CCR7 signaling in T cells induced the relocalization of the F-actin–promoting factor DOCK2 away from the DC interaction interface, a process necessary for… release from DCs…prolonged engagement was associated with a dysfunctional TEFF phenotype… and impaired…activity.”
science.org
Lymphoid tissue chemokines limit priming duration to preserve CD8+ T cell functionality
The generation of effector CD8+ T cells (TEFF) requires activation of naïve CCR7+ T cells (TN) by dendritic cells (DCs) in lymphoid tissue. How TN-DC interaction duration and signal integration are co...
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 28/04/2026
“#Siglec−sialoglycan interactions are affected by sialic acid type (N-acetylneuraminic acid and N-glycolylneuraminic acid), 9-O-acetylation, linkage, sulfation, and carrier, are of varying affinities ( ~ 10 nM-µM/mM), and cis interactions are key regulatory features” #glycotime
nature.com
An atlas of human siglecs integrates expression, affinity, and cis/trans sialoglycan recognition profiles - Nature Communications
Cells are coated with glycans that are linked to cellular recognition via sialic acid-binding immunoglobulin-like lectins (Siglecs). Here the authors present a resource characterising human Siglec exp...
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Reposted by Brett Garabedian, PhD
Jessica Stark @jcstark.bsky.social · 27/04/2026
Grateful to @natbiotech.nature.com for the opportunity to reflect on my scientific journey, including launching my lab @mitkochinstitute.bsky.social @mitdeptofbe.bsky.social @mitcheme.bsky.social www.nature.com/articles/s41...
nature.com
Five questions with Jessica Stark - Nature Biotechnology
A builder and problem solver at heart, she is developing technologies to understand and engineer the roles of cell-surface sugars, called glycans, in the immune system.
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Reposted by Brett Garabedian, PhD
Carolyn Bertozzi @carolynbertozzi.bskyverified.social · 27/04/2026
“If medicine is a vocation of care ordered toward the needs and health outcomes of others, admissions cannot be reduced to the identification of applicants who satisfy narrow empirical metrics of merit. Our patients have the ultimate right to define merit” stanforddaily.com/2026/04/19/d...
stanforddaily.com
The DOJ is targeting Stanford Medicine's nonexistent problem
Akeke and Zhang defend against the DOJ's investigation into Stanford Medicine and advocate for the importance of diversity consideration in admissions.
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 24/04/2026
#glycotime @jcstark.bsky.social 👏
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Reposted by Brett Garabedian, PhD
Anne Applebaum @anneapplebaum.wsocial.eu · 15/04/2026
Russia and China are helping Iran but Trump is angry at... Europe Iran used Chinese spy satellite to target US bases - giftarticle.ft.com/giftarticle/... via @FT
giftarticle.ft.com
Iran used Chinese spy satellite to target US bases
Leaked documents show IRGC secretly acquired system and used it to guide strikes during war in March
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Reposted by Brett Garabedian, PhD
Neil deGrasse Tyson @neildegrassetyson.com · 15/04/2026
If current cuts to the Federal Science Budget proposed by the White House are approved by Congress, that will far-and-away be the largest cut to science since the United States began funding it. Republicans & Democrats alike know there’s no surer path to Making America Not-Great.
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 10/04/2026
“The inhibitory activity of CD43 was dependent on its sialic acid residues and the length of its ectodomain but independent of the canonical sialic acid–binding receptors SIGLEC-1, SIGLEC-7, and SIGLEC-9” #glycotime www.science.org/doi/10.1126/...
science.org
Sialylated CD43 forms a glyco-immune barrier that restrains antileukemic immunity
Macrophages exert antitumorigenic activity through phagocytosis, but phagocytosis-enhancing therapeutics have not improved acute myeloid leukemia (AML) outcomes. To identify phagocytosis regulators, we performed CRISPR knockout screens in human AML cells ...
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 09/04/2026
@erictopol.bsky.social 👏 open.spotify.com/episode/4lu5...
open.spotify.com
Wellness Grifters and the Real Science Behind Longevity with Dr. Eric Topol
On with Kara Swisher · Episode
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 02/04/2026
On-demand trogocytosis
nature.com
Programmable macromolecule delivery via engineered trogocytosis - Nature Cell Biology
Chen et al. engineer TRANSFER (trogocytosis-inspired receptor transfer and functional effector release), a method to deliver functional cargos from donor to recipient cells in a specific manner via di...
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Reposted by Brett Garabedian, PhD
bioRxivpreprint @biorxivpreprint.bsky.social · 02/04/2026
Sequence-Independent In Situ Imaging of GlycoRNA in Living Cells and Tissues based on COMPASS www.biorxiv.org/content/10.64898/20…
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Reposted by Brett Garabedian, PhD
Eric Topol @erictopol.bsky.social · 30/03/2026
Intensity of exercise vs volume of physical activity made a difference for lower risk of 8 diseases and all-cause mortality among 96,000 UK Biobank participants, especially notable for immune-mediated (IMID). VPA-vigorous physical activity academic.oup.com/eurheartj/ad...
academic.oup.com
Volume vs intensity of physical activity and risk of cardiovascular and non-cardiovascular chronic diseases
AbstractBackground and aims. While vigorous physical activity (VPA) is known to provide greater health benefits per unit time than moderate activity, the s
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 29/03/2026
www.nature.com/articles/s41...
nature.com
MHC class I on target cells regulates CD4+ T cell-mediated immunity - Nature Immunology
Here, the authors suggest that, when major histocompatibility complex class I is downregulated on allogenic or tumor cells, they are more susceptible to CD4+ T cell-mediated ferroptosis.
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Brett Garabedian, PhD @brettgarabedian.bsky.social · 27/03/2026
#glycotime at the BBB! 🍭 🧠 🎯
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Reposted by Brett Garabedian, PhD
Maryanne Chisholm 🌊 💙 @maryannechisholm.bsky.social · 25/03/2026
A view of the night sky from Mars. (Yes, really)
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Reposted by Brett Garabedian, PhD
Scott Galloway @profgalloway.com · 24/03/2026
Love this. Also, fastest way to end issues at airports would be to ground private jets, due to capacity constraints, until TSA problem(s) resolved. Over in 24 hours.
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Reposted by Brett Garabedian, PhD
Luiz Pedro Carvalho, PhD @luizcarvalholab.bsky.social · 25/03/2026
All currently approved antibiotics inhibit essential cellular processes. Ever wonder if we could kill bacteria using the opposite strategy? Here, we demonstrate an alternative antibacterial strategy: lethality through pathway over-activation. www.nature.com/articles/s41... (1 out of 3)
nature.com
Activation of l-histidine biosynthesis as a new antibiotic strategy against Mycobacterium tuberculosis - Nature Communications
Here, the authors report metabolic activation as a potential antimicrobial strategy against Mycobacterium tuberculosis. They show that supra-physiological activation of L-histidine biosynthesis r...
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Reposted by Brett Garabedian, PhD
Elisa Fadda @elisafadda.bsky.social · 25/03/2026
"We identified 13 genome-wide significant loci associated with SARS-CoV-2 infection. The strongest signal was a single nucleotide polymorphism in an intron of ST6GAL1 (...) connected to three other associated loci (harboring MUC1, MUC5AC and MUC16)" #glycotime 🧪 www.nature.com/articles/s41...
nature.com
Central role of glycosylation processes in human genetic susceptibility to SARS-CoV-2 infections with Omicron variants - Nature Genetics
Genome-wide analyses identify 13 loci associated with susceptibility to infection with SARS-CoV-2 Omicron variants, including variation in ST6GAL1, previously associated with influenza susceptibility,...
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Thiago Carvalho @cyrilpedia.bsky.social · 20/03/2026
'HIF-1α-active CD4+ T cells occupy the border of tertiary lymphoid structures, where they coordinate an IL-21-dependent network of spatially colocalized immune cells including macrophages, natural killer cells, & A-positive IgA+ B cells.' #Immunology www.cell.com/immunity/ful...
cell.com
HIF-1α+ CD4+ T cells coordinate a tissue-resident immune cell network in the lung
Tertiary lymphoid structures are critical components of tissue immunity, necessitating better understanding of their organization and immune functions. De Lima et al. investigate the spatial and tempo...
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