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David Tscharke

@dctscharke.bsky.social
832 followers 1.3K following 29 posts

I'm a highly distractible virologist and immunologist at the Australian National University in Canberra.

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David Tscharke @dctscharke.bsky.social · 12/04/2026
This is a significant move by CRUK. Who is going to be next?
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David Tscharke @dctscharke.bsky.social · 20/12/2025
There's lots of other data and comparisons in this christmas tree of a paper that we hope others will find different ways to view. 45 poxvirus epitopes, the vaccinia virus proteome, 4 cell type, 5 times after infection. Plus T cell responses and the in vivo viral epitope levels as the 🌟 on top!
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David Tscharke @dctscharke.bsky.social · 20/12/2025
In all cell types, most epitope presentation was coincident with translation but this trend was most apparent in DCs. Suggesting that the ability to sample translation (or perhaps make and capture DRiPs), is another specialisation in these cells to help them do their job of priming T cell responses.
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David Tscharke @dctscharke.bsky.social · 20/12/2025
We looked at protein and epitope levels across 4 cell types - primary and immortalised DCs and fibroblasts - finding overall very high similarly, but enough difference to undermine attempts to find correlations with immungenicity.
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David Tscharke @dctscharke.bsky.social · 20/12/2025
This is the result of a long-running collaboration between my lab @jcsmr.bsky.social, @scienceanu.bsky.social and Tony Purcell's @monashuniversity.bsky.social.
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David Tscharke @dctscharke.bsky.social · 20/12/2025
Ever looked for evidence that epitope abundance correlates with immungenicity for antiviral CD8 T cells? It's here along with the first quantification of viral epitope levels in vivo. By the brilliant @virotuned.bsky.social and Nathan Croft. #ImmunoSky #ViroSky doi.org/10.1126/scia...
doi.org
A poxvirus model reveals general correlates of antigen presentation and immunogenicity for viral CD8+ T cell epitopes
The amount of viral epitope presented on MHC I in lymphoid tissue of infected mice is a correlate of CD8+ T cell immunogenicity.
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David Tscharke @dctscharke.bsky.social · 22/06/2025
Canberra too!
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Brian Ferguson @viropractor.bsky.social · 31/05/2025
Good fun to contribute to this super paper from Yorgo Modis' lab where we looked at the impact of disease-associated MDA5 mutations on its structure, biochemistry and antiviral functions #immunosky www.cell.com/cell-reports...
cell.com
Molecular basis of autoimmune disease protection by MDA5 variants
Loss-of-function MDA5 variants increase the risk of chronic inflammation but protect against autoimmune disease. Singh et al. show that autoimmune-protective variants impair MDA5 signaling via differe...
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David Tscharke @dctscharke.bsky.social · 12/05/2025
Great people doing outstanding science!
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David Tscharke @dctscharke.bsky.social · 02/05/2025
A great story showcasing the brilliant Yi Ning Fu, who I had the privilege of supervising last year as a student with the equally fantastic @agrowlipowli.bsky.social. It's a huge pleasure scienceing with them.
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Science & Medicine at ANU @scienceanu.bsky.social · 02/05/2025
“Tasmanian devils are the world's largest remaining marsupial carnivore and have a very important ecological niche,” says Yi Ning (Sabrina) Fu, @jcsmr.bsky.social. “And they are cute and adorable—we need to save them.” That's where cutting-edge virology comes in. science.anu.edu.au/news-events/...
science.anu.edu.au
Cool science to save cute devils: Honours student targets contagious cancer
Scientists from all over the world have been racing to understand the fundamentals of Devil Facial Tumour Disease and find a way to stop it. One of them is Yi Ning (Sabrina) Fu, a recent Honours gradu...
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Hensley Lab @scottehensley.bsky.social · 16/04/2025
After 8 months of peer review, our manuscript was published today @nature.com showing that bovine H5N1 viruses bind poorly to human-type sialic acid receptors. We now know that the virus is only 1 HA substitution away from efficiently binding human receptors. www.nature.com/articles/s41...
nature.com
Bovine H5N1 binds poorly to human-type sialic acid receptors - Nature
Nature - Bovine H5N1 binds poorly to human-type sialic acid receptors
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Prof Peter Hotez MD PhD DSc(hon) @peterhotezmdphd.bsky.social · 05/04/2025
My first post on BlueSky, I could not access the same handle as my X (someone hacked into that one): So it's @peterhotez for X and @peterhotezmdphd for BlueSky I'm a pediatric-vaccine scientist based in Houston TX at our Texas Medical Center
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Eric Topol @erictopol.bsky.social · 02/04/2025
The vaccine against Shingles helps protect against dementia, results of a natural experiment, adding to prior evidence "implications are profound" New @nature.com www.nature.com/articles/d41... nature.com/articles/s41...
nature.com
A natural experiment on the effect of herpes zoster vaccination on dementia - Nature
Using a natural experiment that avoids common bias concerns, this study finds that the live-attenuated shingles vaccine reduced the probability of a new dementia diagnosis within a follow-up period of...
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David Tscharke @dctscharke.bsky.social · 29/03/2025
Happy to be added
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Edward Nirenberg @enirenberg.bsky.social · 15/03/2025
Huh. Well this is neat- endogenous antigen presentation on MHC II is a feature of mRNA vaccines. www.biorxiv.org/content/10.1...
biorxiv.org
Endogenous antigen processing promotes mRNA vaccine CD4+ T cell responses
Lipid nanoparticle (LNP)-encapsulated nucleoside-modified mRNA vaccines elicit robust CD4+ T cell responses, which are essential for antiviral immunity. While peptides presented to CD4+ T cells via ma...
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marque lawyers @marquelawyers.com.au · 12/03/2025
Doesn’t matter what The Age says; the fact is it’s taken money to publish hate speech
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Eddie Holmes @eddieholmes.bsky.social · 11/03/2025
Big news
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Hilda Bastian @hildabast.bsky.social · 14/02/2025
Hate that it has come to this, but it's time to consider PubMed vulnerable to enshittification. My latest post @plos.org discusses the lines we need to fight to hold – and alternatives we can rely on internationally: absolutelymaybe.plos.org/2025/02/14/w... #medlibs
absolutelymaybe.plos.org
What if We Can't Rely on PubMed? - Absolutely Maybe
PubMed is incredibly reliable. And a lot depends on it. It’s an ecosystem built around MEDLINE, the steady feed of new publications…
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Marion Koopmans @marionkoopmans.bsky.social · 11/02/2025
the evolution of mpox Clade Ib in DRC. Great collaborative study with support from @EDCTP3 www.nature.com/articles/s41...
nature.com
Epidemiological and genomic evolution of the ongoing outbreak of clade Ib mpox virus in the eastern Democratic Republic of the Congo
Nature Medicine - Genomic and epidemiologic data suggest that the rapid spread of MPox Clade I in the Democratic Republic of the Congo has happened mostly through sexual contact within densely...
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Angie Rasmussen @angierasmussen.bsky.social · 09/02/2025
Here’s a reason why the incoming NIH Director, health economist Jay Bhattacharya, should know cutting indirect costs at NIH is self-defeating and stupid. Every $1 invested in NIH returns $2.5. So $4B “savings” is actually $10B we lost.
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Christiana Fogg @cnfogg.bsky.social · 07/02/2025
Timely study by Katherine Kedzierska and Jamie Rossjohn and colleagues defining key structural features of #Tcell binding to circulating #influenza strains from 1918 to ~present #ImmunoSky www.science.org/doi/10.1126/...
science.org
Molecular determinants of cross-strain influenza A virus recognition by αβ T cell receptors
TCR-peptide-HLA ternary structures define molecular mechanisms of TCR cross-reactivity toward natural influenza variants.
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Marion Koopmans @marionkoopmans.bsky.social · 05/02/2025
A call for editors of biomedical journals to resist the banning of terms for political reasons www.cmi-comms.com/article/S295...
cmi-comms.com
From medical editors: A call to the global infectious diseases and clinical microbiology community
Each time a man stands up for an ideal, or acts to improve the lot of others, or strikes out against injustice, he sends forth a tiny ripple of hope.Robert F. Kennedy, Senior
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Angie Rasmussen @angierasmussen.bsky.social · 02/02/2025
Elon doesn't give a shit about bioweapons research and would probably fund it if it were advantageous to him. The US doesn't do or fund any bioweapons research. Elon is lying that they do because he wants the tax dollars to subsidize him instead of the legitimate public health research we paid for.
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Eddie Holmes @eddieholmes.bsky.social · 03/02/2025
Intelligence community report, June 2023: “… no indication that the WIV’s pre-pandemic research holdings included SARS-CoV-2 or a close progenitor…” Facts matter.
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Angie Rasmussen @angierasmussen.bsky.social · 02/02/2025
@charlesgaba.com is a hero and downloaded CDC’s entire website. A small group of us has come together to preserve this critical resource and make it accessible to the scientific community. More to come. These data are public and they are ours. Deletion disobedience is one way to fight back.
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Charles Gaba ✡️ @charlesgaba.com · 02/02/2025
📣 UPDATE: OK, still working with some others to figure out the best way to present it all, but in the meantime here's the first batch of links to the most-recent archived versions of every page at the CDC prior to the Trump/Musk Purge: acasignups.net/25/02/02/whi...
acasignups.net
In which I provide links to archived versions of every CDC.gov page available pre-purge (Part 1 of 15)
As horrific as it is that the Trump/Musk Administration is purging data from federal websites, it's good to know that the Internet Archive has been archiving much of it. However, in addition to the Ar...
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Ian M. Mackay, PhD (he/him) 🦠🤧🧬📑🦟🧀 @mackayim.bsky.social · 14/01/2025
Is 2024 Australia's worst year yet for violence against women? -it's not "an epidemic". It's ENDEMIC to Australia, and that's the problem. Stop making this seem like a surprise. Every. Single. Time. The surprise is the lack of political anger at it. From anywhere. www.sbs.com.au/news/article...
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Helen Branswell 🇨🇦 @helenbranswell.bsky.social · 27/12/2024
The #H5N1 #birdflu virus from a severe case in Louisiana shows it was developing mutations that could help it attach to cells in human respiratory tracts, including a mutation seen in a recent severe case in British Columbia, Canada, the #CDC reported today. www.statnews.com/2024/12/26/c...
statnews.com
CDC says H5N1 bird flu sample shows mutations that may help the virus bind to cells in the upper airways of people
The CDC said Thursday that the mutations, detected in a sample taken from a Louisiana patient, may help bind the virus to the upper airways in people.
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Edward Nirenberg @enirenberg.bsky.social · 20/12/2024
There's a really interesting new paper out in Science for people who care about immunity to flu (which should be everyone because flu is a VERY big problem): www.science.org/doi/10.1126/... Here's my thread explaining this work🧵
science.org
Coupling antigens from multiple subtypes of influenza can broaden antibody and T cell responses
The seasonal influenza vaccine contains strains of viruses from distinct subtypes that are grown independently and then combined. However, most individuals exhibit a more robust response to one of the...
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IMAGE Lab @labphan.bsky.social · 12/12/2024
Excited to offer 2 fully funded PhD projects with Peter Croucher @garvaninstitute.bsky.social using intravital microscopy to track osteoclast/osteomorphs dynamics using novel mitochondrial reporters. Domestic & int'l students from diverse bkg welcome! Please share! www.unsw.edu.au/research/hdr...
unsw.edu.au
Tracking the origin and fate of osteomorphs
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David Tscharke @dctscharke.bsky.social · 13/12/2024
Amazing enough for the potential impact on HIV, but this line caught my eye "other viruses have their own capsid proteins... ...this drug's triumph raises the exciting prospect that similar capsid inhibitors could fight other viral diseases." www.science.org/content/arti...
science.org
Science’s 2024 Breakthrough of the Year: Opening the door to a new era of HIV prevention
A drug with a novel mechanism protects people against the AIDS virus for 6 months. It could speed the end of the epidemic—if those who need it most get access
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David Tscharke @dctscharke.bsky.social · 12/12/2024
This is the result of the continuous development and improvement of our methods by @agrowlipowli.bsky.social and Stewart Smith. Key applications are vaccines and virolytic cancer therapies. Hit us up if you can't see past the paywall - we're happy to help with methods and tips.
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Rod Rahimi @rodrahimi.bsky.social · 10/12/2024
"Early this year, cases of mpox erupted across Central Africa, killing hundreds...Mbala led a team of researchers who sounded the alarm...and urged health officials both in the DRC and in neighbouring countries to devise plans to contain the monkeypox virus’s spread." 🧪⚕️
nature.com
This doctor raised the alarm about a deadly mpox outbreak that went global
Placide Mbala is part of Nature’s 10, a list of people who shaped science in 2024.
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Kai Kupferschmidt @kakape.bsky.social · 06/12/2024
If an #H5N1 pandemic starts tomorrow or in three months, there will be little mystery as to how it happened. The conditions are all there. They have been for a while. So in some ways the more interesting question to me at the moment is: Why aren’t we in a pandemic yet? Story here, 🧵 to come: 🧪#IDSky
science.org
Why hasn’t the bird flu pandemic started?
Some scientists examining mutations found in H5N1 viruses fear major outbreak is imminent but others says pathogen remains unpredictable
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David Tscharke @dctscharke.bsky.social · 06/12/2024
Happy to be included
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David Tscharke @dctscharke.bsky.social · 04/12/2024
Thanks for collecting us in a pack (and some of us not there). I'm so happy to be able to enjoy snippets of the meeting from here.
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Erin Harvey @erinharvey.bsky.social · 04/12/2024
A great intro to our work on a crazy Tassie devil virus from @julienmelade.bsky.social in the #AVS science bites session. Find out more at poster 102 this evening
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Eddie Holmes @eddieholmes.bsky.social · 03/12/2024
Correct. Those, including other ‘scientists’, who have made continual baseless claims about our paper, that it was ghost written, plagiarised, or we were paid off, should reflect hard on the misinformation they have spread and the hate they have sown.
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Australasian Virology Society @ausvirologysoc.bsky.social · 01/12/2024
AVS is now on bluesky - just in time for our biennial meeting starting today #AVS12
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Shalin H. Naik @shalinhnaik.bsky.social · 02/12/2024
📢 World-leading Immunologists. The Nossal Endowed Chair of Immunology has just been announced @wehi-research.bsky.social. This is your chance to move (or return) to Australia to do ground-breaking research and join a thriving environment for discovery and translation.
alumniglobal.com
WEHI - The Sir Gustav Nossal Professor of Immunology - Alumni Global
The Professor will lead transformative research into the complexities of the immune system, building on Sir Gustav Nossal’s pioneering work. By fostering a culture of scientific excellence and innovat...
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Carolien van de Sandt @cvandesandt.bsky.social · 30/11/2024
How does antiviral #immunity against #influenza evolve across human lifespan? 👶➡️👧➡️👱➡️👵 Our study in Nature Immunology investigates the difference in CD8 T cell response across human lifespan - a🧵⬇️ go.unimelb.edu.au/627s Katherine Kedzierska, Fabio Luciani, The Doherty Institute
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Brian Ferguson @viropractor.bsky.social · 29/11/2024
We are recruiting an associate or full Professor of Infection and/or Immunity to the school biological sciences in Cambridge. Full details here: www.jobs.cam.ac.uk/job/49381/ #immunology #virology
jobs.cam.ac.uk
Associate Professor/Professor of Infection and/or Immunity - Job Opportunities - University of Cambridge
Associate Professor/Professor of Infection and/or Immunity in the Department of Pathology at the University of Cambridge.
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Andrea Love, PhD | Biomedical Scientist @drandrealove.bsky.social · 28/11/2024
I’m thankful for the top ten scientific developments that improve health: Vaccines Antibiotics & antimicrobials Clean water, sanitation, & hygiene Food safety & fortification innovations Modern agriculture methods Public health education campaigns 1/
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David Tscharke @dctscharke.bsky.social · 29/11/2024
I'm curious whether there is always systemic spread, or if some infections are more local like cowpox. Irrespective of pathogenesis, it's another one to keep our eyes on. And to remember, there is a vaccine, it works, but not if it's left on a shelf.
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David Tscharke @dctscharke.bsky.social · 29/11/2024
#ViroSky #Mpox 🧪 A piece on Mpox by Reuters. It's a bit gruesome, but Mpox is not a pleasant thing to have. And it's spreading, especially in parts of Africa. We now have 2 separately emerged stains. www.reuters.com/graphics/HEA...
reuters.com
How the mpox virus spreads, mutates, and attacks humans
Explaining the evolution of mpox, formerly monkeypox, and how it affects the body
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Eddie Holmes @eddieholmes.bsky.social · 28/11/2024
Serological evidence for SARS-CoV-2-like viruses in Sunda pangolins, likely reflecting the wildlife trade. Again exposes the idiocy of the "pangolin papers" accusations. I and others have even been accused of faking the pangolin data. bmcbiol.biomedcentral.com/articles/10....
bmcbiol.biomedcentral.com
Serological evidence of sarbecovirus exposure along Sunda pangolin trafficking pathways - BMC Biology
Background Early in the coronavirus disease 2019 (COVID-19) pandemic, Sunda pangolins (Manis javanica) involved in the illegal wildlife trade in mainland China were identified as hosts of severe acute...
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Mark A. Hanson @hansonmark.bsky.social · 19/11/2024
The strain on scientific publishing: we set out to characterise the remarkable growth of the scientific literature in the last few years, in spite of declining growth in total scientists. What is going on? direct.mit.edu/qss/article/... A 🧵 1/n #AcademicSky #PhDchat #ScientificPublishing #SciPub
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Andrew Mendiola @andrewmendiola.bsky.social · 25/11/2024
www.nature.com/articles/s41...
nature.com
BTK regulates microglial function and neuroinflammation in human stem cell models and mouse models of multiple sclerosis - Nature Communications
Bruton’s tyrosine kinase (BTK) is expressed in immune cells and microglia, where its role remains poorly understood. Here, the authors show that BTK modulates microglial neuroinflammatory pathways rel...
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Razvan Borza @rborza.bsky.social · 25/11/2024
📢 Bluesky is emerging as the New Platform for Academia, but what's missing? 📊 Altmetric integration to track attention for articles 🔄 Share and ♥️ Like if you agree! 🙏 @altmetric.com please tell us it’s going to happen!
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