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AJ te Velthuis

@ajtevelthuis.bsky.social
306 followers 204 following 14 posts

Assistant Professor at Princeton University. RNA polymerases, RNA viruses, mutations, and innate immune responses. Funded by NIH, Wellcome, NSF. tevelthuislab.scholar.princeton.edu

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Reposted by AJ te Velthuis
Cameron Myhrvold @cambearon.bsky.social · 19/06/2026
A huge thank you to all the co-authors involved (Ofer, Ben, Emily, and AJ (@ajtevelthuis.bsky.social)), and to funding from NIH, the Princeton Catalysis Initiative, and the Branco Weiss Fellowship (to Ofer). Working with such talented people is one of the best parts of my job! (25/26)
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Cameron Myhrvold @cambearon.bsky.social · 19/06/2026
RNA is more challenging to search through than DNA as there are so many RNA molecules in a cell. Also, RNAs are very heterogeneous in length, flexible, and structured. So we wondered: how can RBPs efficiently find their targets amid a sea of other RNAs? www.biorxiv.org/content/10.6... (2/26)
biorxiv.org
Intersegmental transfers drive target search in an RNA-targeting CRISPR system
Sequence-specific RNA-binding proteins (RBPs) must efficiently locate their targets among a multitude of cellular RNAs. Cas13, an RNA-guided CRISPR protein, represents an ideal model system in which t...
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AJ te Velthuis @ajtevelthuis.bsky.social · 12/03/2026
Transient RNA structures play a key role in the emergence of highly pathogenic avian influenza viruses! Great to see this collaboration with Mathis Funk, Mathilde Richard, Stephen Cusack, and others in @science.org www.science.org/doi/10.1126/...
science.org
Polymerase trapping as the mechanism of H5 highly pathogenic avian influenza virus genesis
Highly pathogenic avian influenza viruses (HPAIVs) derive from H5 and H7 low pathogenic avian influenza viruses (LPAIVs). Although insertion of a furin-cleavable multibasic cleavage site (MBCS) in the...
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Ervin Fodor @efodor.bsky.social · 27/01/2026
Decoding influenza virus: From polymerase mechanisms to translational therapeutics www.sciencedirect.com/science/arti...
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AJ te Velthuis @ajtevelthuis.bsky.social · 02/01/2026
Congratulations to @karishmabisht.bsky.social with her paper on the effect of fever on influenza replication and innate immune activation! www.science.org/doi/10.1126/...
science.org
Febrile temperature activates the innate immune response by promoting aberrant influenza A virus RNA synthesis
Fever promotes aberrant influenza A virus RNA synthesis and innate immune activation.
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Reposted by AJ te Velthuis
Nature Biotechnology @natbiotech.nature.com · 23/10/2025
RNA structure modulates Cas13 activity and enables mismatch detection - @cambearon.bsky.social @princetonmolbio.bsky.social go.nature.com/4oglebG
go.nature.com
RNA structure modulates Cas13 activity and enables mismatch detection - Nature Biotechnology
An effective CRISPR RNA occlusion strategy enhances mismatch detection when using Cas13.
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Reposted by AJ te Velthuis
Ervin Fodor @efodor.bsky.social · 26/05/2025
There is still time to apply; join our team to work on influenza virus replication mechanisms!
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Karishma Bisht @karishmabisht.bsky.social · 20/05/2025
Excited to share our latest preprint in which we integrate mathematical modeling with experimental approaches to investigate how ⬆️ temperature influences aberrant RNA synthesis and innate immunity in flu infection 🦠
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AJ te Velthuis @ajtevelthuis.bsky.social · 20/05/2025
Flu infection => temperature⬆️ => NP levels⬇️ => aberrant RNAs⬆️ => interferon⬆️. Elegant modeling and experimental work by @karishmabisht.bsky.social and @danielweilandt.bsky.social! Preprint: www.biorxiv.org/content/10.1...
biorxiv.org
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BNO News @bnonews.com · 08/04/2025
3-year-old girl dies from H5N1 bird flu in Mexico’s first human case bnonews.com/index.php/20...
bnonews.com
3-year-old girl dies from H5N1 bird flu in Mexico’s first human case
A three-year-old girl who became Mexico’s first confirmed human case of H5N1 avian influenza has died, the country’s Health Ministry announced. It marks Mexico’s first fatality linked to the bird flu ...
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Björn Meyer @bmeyer.bsky.social · 01/03/2025
Yep, Pubmed here down as well
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Kristian G. Andersen @kgandersen.bsky.social · 27/02/2025
It is worth paying close attention to the new bill "Dangerous Viral Gain of Function Research Moratorium Act" introduced by Senator Roger Marshall. If enacted, it will effectively stop all of virological research, including for vaccines. www.marshall.senate.gov/wp-content/u... 🧵👇
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Larry Ladd @larryladd.bsky.social · 01/03/2025
We are at risk of abandoning “a deal where the government provides funding, and in exchange it gets products, research, national security, prestige, and the next generation of qualified scientists.” #academicsky www.princeton.edu/news/2025/02...
princeton.edu
The partnership that drives America’s leadership in medical discovery: How it works and what’s at stake
With federal support, universities produce world-changing discoveries and the next generation of exquisitely well-trained researchers.
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derek guy @dieworkwear.bsky.social · 01/03/2025
FWIW, it's perhaps worth noting that when Benjamin Franklin visited France between 1776 and 1778 to ask for military support for the then-new-formed United States of America, he wore a coonskin cap. "Proper" French court attire at this time was a powdered wig.
Drawing of Benjamin Frankling wearing a coonskin cap. Franklin being received by the French court in 1778. The French are in powdered wigs.
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M.J. Crockett @mjcrockett.bsky.social · 27/02/2025
My new piece in @theguardian.com Techno-optimism is human pessimism. www.theguardian.com/commentisfre...
theguardian.com
AI is ‘beating’ humans at empathy and creativity. But these games are rigged | MJ Crockett
Research pitting people against AI systems gives AI an edge by asking us to perform in machine-like ways
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Reposted by AJ te Velthuis
Alistair Russell @alistairrussell.bsky.social · 26/02/2025
Despite everything, I still really want to celebrate the wonderful folks in my group, so I hope it is ok if i write about our latest work. I am very proud of all the authors, and our collaborators, on our work just published in Nature communications. www.nature.com/articles/s41...
nature.com
Analysis of NS2-dependent effects on influenza PB1 segment extends replication requirements beyond the canonical promoter - Nature Communications
The eight genomics segments of Influenza A virus exhibit different replication dynamics during infection. Here, the authors show through a range of mutant libraries of HA and PB1 segments that Influen...
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oliviermoncorge.bsky.social @oliviermoncorge.bsky.social · 17/02/2025
Negative-Strand RNA Virus meeting #NSV2025 registration is now open! Visit www.negativestrandvirus.org/home
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AJ te Velthuis @ajtevelthuis.bsky.social · 05/01/2025
Excited to share this new preprint showing that non-canonical influenza virus transcripts are produced in a sequence/RNA structure-dependent manner on aberrant RNAs: www.biorxiv.org/content/10.1...
biorxiv.org
A two-step mechanism for RIG-I activation by influenza virus mini viral RNAs
Influenza A virus (IAV) non-canonical replication products can be bound by various host pathogen sensors, including retinoic acid-inducible gene I (RIG-I). However, it is not clear why non-canonical I...
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bioRxivpreprint @biorxivpreprint.bsky.social · 05/01/2025
A two-step mechanism for RIG-I activation by influenza virus mini viral RNAs www.biorxiv.org/content/10.1101/202…
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Ed Hutchinson @socialinfluenza.bsky.social · 18/12/2024
They can all be downloaded from here: cvr-engagement.co.uk/virus-snowfl..., except for...
cvr-engagement.co.uk
Virus Snowflakes — CVR Engagement
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Nonia Pariente @npariente.bsky.social · 18/12/2024
What we are waiting for to wake up? "The patient had been in contact with sick and dead birds in backyard flocks, the Centers for Disease Control and Prevention said" @adamjkucharski.bsky.social discusses effective outbreak response @plosbiology.org plos.io/3ZnpcnE apnews.com/article/bird... 🧪
apnews.com
Health officials say Louisiana patient is first severe bird flu case in US
A person in Louisiana has the first severe illness caused by bird flu in the U.S., health officials said Wednesday.
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Alistair Russell @alistairrussell.bsky.social · 17/11/2024
We have another new preprint up! www.biorxiv.org/content/10.1...
biorxiv.org
Novel CRITR-seq approach reveals influenza transcription is modulated by NELF and is a key event precipitating an interferon response
Transcription of interferons upon viral infection is critical for cell-intrinsic innate immunity. This process is influenced by many host and viral factors. To identify host factors that modulate inte...
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Alistair Russell @alistairrussell.bsky.social · 17/11/2024
(this is very consistent with another work from @ajtevelthuis.bsky.social which we were happy to contribute to, found at www.biorxiv.org/content/10.1...)
biorxiv.org
Influenza A virus transcription generates capped cRNAs that activate RIG-I
During influenza A virus (IAV) infection, host pathogen receptor retinoic acid-inducible gene I (RIG-I) detects the partially complementary, 5’-triphosphorylated ends of the viral genome segments and ...
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AJ te Velthuis @ajtevelthuis.bsky.social · 13/11/2024
We have found a capped flu RNA that was hiding in plain sight. In our preprint we show how this RNA activates RIG-I through a non-canonical mechanism. Fantastic work by Liza Elshina and many thanks to collaborators @alistairrussell.bsky.social and Joe Marcotrigiano! biorxiv.org/content/10.1...
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Alistair Russell @alistairrussell.bsky.social · 11/09/2024
We have a new preprint up! www.biorxiv.org/content/10.1...
biorxiv.org
Efficient genome replication in influenza A virus requires NS2 and sequence beyond the canonical promoter
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
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AJ te Velthuis @ajtevelthuis.bsky.social · 12/01/2024
Transient RNA structures contribute to highly pathogenic flu emergence! Fantastic work by Mathis Funk and Mathilde Richard now on BioRxiv: biorxiv.org/content/10.1... For supporting data see: science.org/doi/10.1126/...
biorxiv.org
Transient RNA structures underlie highly pathogenic avian influenza virus genesis
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
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AJ te Velthuis @ajtevelthuis.bsky.social · 04/11/2023
Excited to share a preprint on quantifying aberrant viral RNAs using Cas13. We reveal surprisingly reproducible kinetics of individual influenza virus mvRNAs in infection and detect mvRNAs even in clinical samples! www.biorxiv.org/content/10.1...
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Mark Ungrin @mark-ungrin.bsky.social · 17/10/2023
The Scientific American mask article with @sameo416.bsky.social and @jvipondmd.bsky.social www.scientificamerican.com/article/mask...
scientificamerican.com
Masks Work. Distorting Science to Dispute the Evidence Doesn’t
New mask studies relying on a medical paradigm do not erase decades of engineering and occupational science that show they work
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