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Seth Cheetham

@sethcheetham.bsky.social
1.1K followers 178 following 51 posts

mRNA drug discovery | Deputy-Director BASE mRNA Facility | Associate Professor at the University of Queensland.

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Seth Cheetham @sethcheetham.bsky.social · 11/06/2025
To accelerate #mRNA vaccine and therapy research, we're excited to share our end-to-end protocol for mRNA design, synthesis and encapsulation in @natprot.nature.com. Protocol development led by @laura-leighton.bsky.social, Natasha Chaudhary and Tim Mercer.@basemrna.bsky.social rdcu.be/eqiF1
rdcu.be
The design, manufacture and LNP formulation of mRNA for research use
Nature Protocols - This protocol describes simple, small-scale laboratory production of mRNA for research and preclinical use. This includes sequence design, DNA template production, mRNA synthesis...
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Seth Cheetham @sethcheetham.bsky.social · 16/05/2025
Today, a huge milestone for personalised #mRNA therapeutics for inherited disease! A baby with an ultra-rare mitochondrial metabolic disease was treated at UPenn with an mRNA-encoded gene-corrector. The mRNA was made to treat a single individual in just 7 months! www.nejm.org/doi/full/10....
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Seth Cheetham @sethcheetham.bsky.social · 02/04/2025
Systemic mRNA-LNP delivery beyond the liver? Check out our recent paper demonstrating cell-specific mRNA-LNP delivery using PEG- and target cell-specific antibodies. This approach can customised to any target cell-type with off-the-shelf mRNA-LNPs. 1/ sciencedirect.com/science/arti...
sciencedirect.com
Targeted mRNA delivery with bispecific antibodies that tether LNPs to cell surface markers
Efficient delivery of mRNA-lipid nanoparticles (LNPs) to specific cell types remains a major challenge for mRNA therapeutics. Conventional targeting a…
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Seth Cheetham @sethcheetham.bsky.social · 20/03/2025
Exited to share our latest preprint! mRNA-LNPs are efficiently delivered to healthy livers, but what about liver tumours? Our postdoc @laura-leighton.bsky.social found liver tumours efficiently take up mRNA, enabling next generation mRNA-LNP cancer therapeutics. www.biorxiv.org/content/10.1...
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Reposted by Seth Cheetham
Richard Behringer @rrbehringer.bsky.social · 12/03/2025
Developmental biology research leads to fundamental discoveries for biomedical research. RNA Vaccines. Lane et al., 1971 PMID: 5169490. Images by Brandy Walker & Amaya Moss @rkmille . @socdevbio.bsky.social 3/12
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Reposted by Seth Cheetham
Christine Mordstein @cmordstein.bsky.social · 05/03/2025
Calling on #ONT #Nanopore #sequencing experts: when sequencing through a stretch of 120nt dA using a DNA plasmid kit (outsourced in our case), what should one expect as average length in the output? The loss we are seeing is a bit extreme #RNAsky
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Seth Cheetham @sethcheetham.bsky.social · 06/03/2025
#mRNA meets Tardigrades! Delivery of an mRNA encoding a protein from the famously tough animal can protect healthy tissue from damaging radiation. Very creative! #RNAsky www.nature.com/articles/s41...
nature.com
Radioprotection of healthy tissue via nanoparticle-delivered mRNA encoding for a damage-suppressor protein found in tardigrades - Nature Biomedical Engineering
Radiation-therapy-induced DNA damage in oral and rectal epithelial cells can be reduced via the nanoparticle-mediated local delivery of messenger RNA encoding for a damage-suppressor protein found in ...
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Seth Cheetham @sethcheetham.bsky.social · 02/03/2025
Not the best weather forecast for Brisbane 😬
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Seth Cheetham @sethcheetham.bsky.social · 26/02/2025
Preach!
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Seth Cheetham @sethcheetham.bsky.social · 31/01/2025
Interested in undertaking a PhD in the transformative field #mRNA cancer vaccines? I have an earmarked #PhD scholarship available for an outstanding domestic student to join our team at UQ and @basemrna.bsky.social. If this sounds like you, get in touch. study.uq.edu.au/study-option...
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Seth Cheetham @sethcheetham.bsky.social · 29/01/2025
New #mRNA cap structures get you more bang (protein) for your buck! Nice new research from @jmcoller.bsky.social in collaboration with Trilink shows the CleanCap M6 analogue inhibits decapping and substantially increases protein expression in vivo. www.cell.com/molecular-th...
cell.com
CleanCap M6 inhibits decapping of exogenously delivered IVT mRNA
In this manuscript, Mandell and colleagues present CleanCap M6, a next generation 5’ cap analog that outperforms existing industry standards in live mice. Mandell and colleagues found that this cap ex...
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Seth Cheetham @sethcheetham.bsky.social · 20/01/2025
Wow this is super cool! Single-cell resolution imaging of #mRNA-LNP biodistribution in cleared mouse bodies. www.nature.com/articles/s41...
nature.com
Nanocarrier imaging at single-cell resolution across entire mouse bodies with deep learning - Nature Biotechnology
An integrated experimental and deep learning pipeline reveals cell-level targeting of nanocarriers in whole bodies.
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Seth Cheetham @sethcheetham.bsky.social · 14/01/2025
Exciting news! @basemrna.bsky.social and Vaxxas have been awarded the $2M USD Biomedical Advanced Research and Development Authority (BARDA) Patch Forward Concept Stage Prize to develop thermostable needle-free mRNA vaccines. www.uq.edu.au/news/article...
uq.edu.au
UQ and Vaxxas win prize to advance patch-based mRNA COVID-19 vaccine
UQ’s BASE facility and biotechnology company Vaxxas have been announced as stage winners of a prestigious global prize to accelerate a patch-based mRNA vaccine for COVID-19.
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Seth Cheetham @sethcheetham.bsky.social · 13/01/2025
#mRNA meets cell therapies! It was great to collaborate with Fernando Guimaraes's team to develop mRNA CARs and delivered them to NK cells. NKs transfected with EphA2 CAR mRNA elicited a strong anti-tumour response in animal sarcoma models. onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Enhancement of anti‐sarcoma immunity by NK cells engineered with mRNA for expression of a EphA2‐targeted CAR
Human NK cells can be efficiently transfected with mRNA to safely express an EphA2-CAR without genomic alterations. EphA2-targeted CAR-NK cells exhibit enhanced cytotoxicity against paediatric sarco...
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Seth Cheetham @sethcheetham.bsky.social · 09/01/2025
Out of office
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Seth Cheetham @sethcheetham.bsky.social · 13/12/2024
Awesome work from Michael Mitchell's lab at UPenn in @natureportfolio.bsky.social identifies novel LNPs that can deliver #mRNA to the placenta. Using the placenta-targeting LNPs to deliver VEGF mRNA improves pre-eclampsia in animal models. www.nature.com/articles/s41...
nature.com
Placenta-tropic VEGF mRNA lipid nanoparticles ameliorate murine pre-eclampsia - Nature
A platform for mRNA lipid nanoparticle delivery to the placenta to treat pre-eclampsia is shown to improve fetal and maternal health in mice and has potential clinical applications in obstetric d...
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Seth Cheetham @sethcheetham.bsky.social · 09/12/2024
Earlier this year I had the opportunity to present a TEDx talk on the transformative potential of personalised #mRNA vaccines for cancer. The recording is out now: www.youtube.com/watch?v=BnSO... #RNAsky #RNAtx @basemrna.bsky.social
youtube.com
How personalized mRNA vaccines could revolutionize cancer treatment | Seth Cheetham | TEDxUQ
YouTube video by TEDx Talks
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Seth Cheetham @sethcheetham.bsky.social · 06/12/2024
How I imagine our lab animals talk to each other.
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Seth Cheetham @sethcheetham.bsky.social · 04/12/2024
There are more ways to design an mRNA than atoms in the universe, so how do you choose the best one? Our new @basemrna.bsky.social software, mRNArchitect enables you to tune expression, stability, reactogenicity and synthesisability to design more potent #mRNA drugs. www.biorxiv.org/content/10.1...
biorxiv.org
mRNArchitect: optimized design of mRNA sequences
Summary: mRNA design is the critical first step in the development of a new vaccine or therapy. The mRNA primary sequence is assembled from multiple elements, including the coding sequence of the targ...
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Seth Cheetham @sethcheetham.bsky.social · 04/12/2024
mRNA-encoded transcription factor inhibitors are a rapidly emerging class of drugs. In Science Translational Medicine a team at Harvard treated retinal disease in animals by inhibiting RUNX1. Stay tuned for our forthcoming work targeting cancer transcription factors. www.science.org/doi/10.1126/...
science.org
An mRNA-encoded dominant-negative inhibitor of transcription factor RUNX1 suppresses vitreoretinal disease in experimental models
An mRNA-encoded, dominant-negative inhibitor of RUNX1 exhibits preclinical efficacy in models of ocular diseases.
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Seth Cheetham @sethcheetham.bsky.social · 25/11/2024
I made a starter pack for interesting people in the mRNA vaccines and therapeutics space. Message me if you want to be added. #RNAsky go.bsky.app/VSHfBce
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Reposted by Seth Cheetham
ARC Tracker @arc-tracker.bsky.social · 25/11/2024
ARC says they’ll release the Discovery Projects 2025 outcomes tomorrow. Recently, outcomes announcements have tended to happen at/around 11am Canberra time. My bot will pick up the announcement in RMS’s database and post immediately. Good luck!
Screenshot of a tweet from the ARC saying they’ll announce DP25 grant outcomes tomorrow (Tuesday 26 Nov).
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Seth Cheetham @sethcheetham.bsky.social · 22/11/2024
Cool paper on ribozyme-mediated trans-ligation of mRNAs to deliver larger cargo. I love this concept, but the examples seem a little engineered. We can and do make conventional mRNAs up to 10kb and greater without any problems. Interested in what others think. #RNAsky www.science.org/doi/10.1126/...
science.org
Ribozyme-activated mRNA trans-ligation enables large gene delivery to treat muscular dystrophies
Ribozymes are small catalytic RNA sequences capable of nucleotide-specific self-cleavage found widespread in nature. Ribozyme cleavage generates distinct 2′,3′-phosphate and 5′-hydroxyl termini that r...
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Seth Cheetham @sethcheetham.bsky.social · 21/11/2024
Noncoding RNA pioneer Howard Chang will be the new Chief Scientific Officer of Amgen. Interesting move. www.fiercebiotech.com/biotech/amge...
fiercebiotech.com
Amgen taps Stanford's Howard Chang to take CSO reins from Jay Bradner
In a few weeks, Howard Chang, M.D., Ph.D., will join Amgen, filling both the roles of senior vice president of research and chief scientific officer. | In a few weeks, Howard Chang, M.D., Ph.D., will ...
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Seth Cheetham @sethcheetham.bsky.social · 19/11/2024
We're building Australia's first centre for the designing and manufacturing personalised cancer vaccines at the BASE mRNA facility. On the PhaseIII podcast I discuss the transformative potential of mRNA for cancer and our efforts to bring this tech to patients. podcasts.apple.com/au/podcast/v...
podcasts.apple.com
VAXXED: Game on, with BASE and WEHI
Podcast Episode · Phase III · 19/11/2024 · 26m
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Seth Cheetham @sethcheetham.bsky.social · 19/11/2024
Can #mRNA technology rejuvenate aged skin? George Church's lab identified the AP-1 gene ATF3 as a key regulator of skin ageing. Delivering ATF3 mRNA rejuvenated skin cells, boosting collagen production. www.biorxiv.org/content/10.1...
biorxiv.org
Human skin rejuvenation via mRNA
Aging is characterized by a gradual decline in function, partly due to accumulated molecular damage. Human skin undergoes both chronological aging and environmental degradation, particularly UV-induce...
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Seth Cheetham @sethcheetham.bsky.social · 18/11/2024
The greatest challenge for #mRNA-LNP therapies is targeting non-liver tissues. To overcome this, we developed customisable bispecific antibodies to tether mRNA-LNPs to cell-surface proteins, achieving efficient and selective mRNA delivery in vivo. Preprint 👇 t.co/0nJj8eVsqC
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