Rune Busk Damgaard

Rune Busk Damgaard

@rbdamgaard.bsky.social

Associate Professor, Section for Medical Biotechnology, Technical University of Denmark. Studies ubiquitin signalling in inflammation, metabolism, and disease.

1.9K followers832 following80 posts

Rune Busk Damgaard reposted

Receptor clustering is a common theme in viral detection, but whether detection directly hinders genome replication is less clear. Excited to share the Z in RZ-type E3s: ZNFX1 is an RNA helicase that builds ubiquitin chains leading to aggregates that ensnare viral RNA. www.cell.com/molecular-ce...

cell.comZNFX1 uses two-component ubiquitin circuitry to quarantine viral RNASquair et al. show that ZNFX1 restricts ssRNA virus replication by integrating SF1 helicase activity with dual E3 ligase mechanisms. ATP-dependent RNA binding activates E3 function, driving self-propa...

Rune Busk Damgaard reposted

More evidence that LUBAC has functions beyond inflammation: Our study shows that LUBAC regulates AMPK signalling to control metabolic adaptation, autophagy, and cell death. This might explain the metabolic problems observed in LUBAC deficiency and ORAS patients. www.nature.com/articles/s41...

nature.comM1-linked ubiquitination by LUBAC regulates AMPK signalling and the response to energetic stress - Cell Death & DifferentiationCell Death & Differentiation - M1-linked ubiquitination by LUBAC regulates AMPK signalling and the response to energetic stress

More evidence that LUBAC has functions beyond inflammation: Our study shows that LUBAC regulates AMPK signalling to control metabolic adaptation, autophagy, and cell death. This might explain the metabolic problems observed in LUBAC deficiency and ORAS patients. www.nature.com/articles/s41...

nature.comM1-linked ubiquitination by LUBAC regulates AMPK signalling and the response to energetic stress - Cell Death & DifferentiationCell Death & Differentiation - M1-linked ubiquitination by LUBAC regulates AMPK signalling and the response to energetic stress

Rune Busk Damgaard reposted

This project started with confusion 🤔 www.nature.com/articles/s41... Loss of LUBAC or OTULIN causes severe inflammatory disease. But patients also show clear metabolic defects. Neither LUBAC nor OTULIN had been linked to metabolic regulation. So where do these metabolic manifestations come from?

Rune Busk Damgaard@rbdamgaard.bsky.social

🧐 What if metabolic defects are not just a consequence of inflammatory disease - but actively contribute to it? Inflammation and metabolism are deeply intertwined, but the molecular links remain unclear. Our new paper in Cell Death & Differentiation uncovers one. 🧵👇 nature.com/articles/s41...

This project started with confusion 🤔 www.nature.com/articles/s41... Loss of LUBAC or OTULIN causes severe inflammatory disease. But patients also show clear metabolic defects. Neither LUBAC nor OTULIN had been linked to metabolic regulation. So where do these metabolic manifestations come from?

Rune Busk Damgaard@rbdamgaard.bsky.social

🧐 What if metabolic defects are not just a consequence of inflammatory disease - but actively contribute to it? Inflammation and metabolism are deeply intertwined, but the molecular links remain unclear. Our new paper in Cell Death & Differentiation uncovers one. 🧵👇 nature.com/articles/s41...

We turned to proteomics 📊 and found that LUBAC and OTULIN regulate AMPK. This suggests the metabolic defects may not simply be secondary to inflammation. Rather, they may be central in to the pathogenesis.

Rune Busk Damgaard reposted

🧐 What if metabolic defects are not just a consequence of inflammatory disease - but actively contribute to it? Inflammation and metabolism are deeply intertwined, but the molecular links remain unclear. Our new paper in Cell Death & Differentiation uncovers one. 🧵👇 nature.com/articles/s41...

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🔬 Using cell lines 🧫, mice 🐁, flies 🪰, and patient cells 🏥, we found: ✔️ LUBAC + OTULIN regulate AMPK during energetic stress ✔️ M1-linked ubiquitination promotes AMPK activity and metabolic adaptation ✔️ Loss of this axis reduces cell and organism resilience to starvation

👉 We show that M1-linked ubiquitination by LUBAC directly regulates AMPK, the master energy sensor of the cell. LUBAC and M1-linked ubiquitin are best known for regulating inflammatory signalling and cell death 💀☠️. But they also control metabolic signalling and adaptation.

Rune Busk Damgaard reposted

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Mechanistically, UFMylation and ubiquitination compete for the same lysine on IFT88, forming a mutually exclusive modification switch that controls protein stability and ciliary integrity across tissues.

While ubiquitination is a well-known regulator of protein stability, the roles of many ubiquitin-like modifiers remain unclear. Here, UFL1-mediated UFMylation emerges as a protective signal for the ciliary protein IFT88.

🚀 Off to our Research Retreat with the Section for Medical Biotechnology, DTU Biotechnology and Biomedicine. Two days of science, ideas & innovation 🧬💡 12 faculty pitches, 30+ PhDs & postdocs, and endless opportunities for new collaborations 🔬🤝✨

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In the review, we summarise state-of-the-art tools for probing linkage-type specificity: 🎯 Antibodies & antibody-like molecules 🎯 Affimers 🎯 Engineered Ub-binding domains 🎯 Catalytically inactive deubiquitinases 🎯 Macrocyclic peptides

Rune Busk Damgaard reposted

The goal of a PhD is not to learn some facts or read a few papers or learn a bunch of techniques. The goal of a PhD is to learn independence, problem solving, how to finish things you start, resilience, & gain the ability to adapt & think creatively. Learning these things is hard.

Rune Busk Damgaard reposted

Replying to @richardsever.bsky.social

the really key number to remember is that biorxiv serves the entire global science community, posting thousands of papers per month for millions of readers, and it's entire running costs ( a few $M/year) are less than some single labs....

Rune Busk Damgaard reposted

Haven’t shared this in a while. But the #ubiquitin and #ubl Starter Pack now includes 116 profiles to follow if you’re interested in the field: signalling, structure and biochemistry, biology, mechanisms, proteostasis, TPD, chemical biology… Check out the list and let me know if you are missing.

Rune Busk Damgaard reposted

Excited to report our latest research on new “molecular glues” that specifically lock the BRCC36 isopeptidase complex (BRISC) in an autoinhibited state and reduce interferon signalling. This first-of-its-kind approach could reshape how we target large deubiquitylase (DUB) complexes. rdcu.be/edRwF