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John Prensner

@johnprensner.bsky.social

Pediatric neuro-oncologist, Asst Prof U-Michigan | Cancer researcher | RNA & ribosome enthusiast | Broad Institute, DFCI alum | book & music & tea lover | Dad | Views are mine (he/him). https://prensnerlab.org

3,413 Followers  |  913 Following  |  533 Posts  |  Joined: 24.12.2023
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Posts by John Prensner (@johnprensner.bsky.social)

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All- don't miss the chance to register for the European Association for Cancer Research meeting in Budapest in June.

I'll be there if you want to chat about all things microproteins!

#EACR
#CancerResearch

12.02.2026 12:58 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Pleased to share the final version of this behemoth of a paper, now finally published. I guess I can retire now?
www.nature.com/articles/s41...

More functional data, many thousands of words removed, and a few other updates from last year's preprint.

12.02.2026 11:22 β€” πŸ‘ 125    πŸ” 51    πŸ’¬ 7    πŸ“Œ 4
Preview
China turns the tables in biotech For at least a century, major scientific research initiatives have reliably occurred in the United States, usually in response to geopolitical competition. This helped establish the country’s status a...

β€œSuccess in US science has come from sustained funding and welcoming the best talent from around the world, yet both of these advantages are in decline”

www.science.org/doi/10.1126/...

11.02.2026 12:03 β€” πŸ‘ 91    πŸ” 43    πŸ’¬ 2    πŸ“Œ 4

Check out the very important topic:
how does poverty influence childhood cancer biology and treatment response?

wonderful work from Birgit Knoechel and Kira Bona!
@huntsmancancer.bsky.social
@danafarber.bsky.social

www.biorxiv.org/content/10.6...

02.02.2026 14:34 β€” πŸ‘ 3    πŸ” 4    πŸ’¬ 0    πŸ“Œ 1

Does the noncoding genome actually carry more genetic information than coding seqs? Motivated by this question we mutated every bp in the 10kb MYC locus. Results are even more exciting: Decoding the MYC locus reveals a druggable ultraconserved RNA element www.biorxiv.org/content/10.6...

31.01.2026 01:13 β€” πŸ‘ 128    πŸ” 47    πŸ’¬ 4    πŸ“Œ 6
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Hallmarks of cancerβ€”Then and now, and beyond Hanahan revisits the evolving framework of cancer hallmarks, synthesizing 25 years of conceptual refinement into a multidimensional view of tumor biology. This review highlights how aberrant capabilit...

Today at Cell: A new #HallmarksofCancer review by Doug Hanahan: www.cell.com/cell/fulltex...
This review marks 25 years since the original seminal Cell review by Hanahan & Robert Weinberg and its impactful follow up in 2011.
@cp-cell.bsky.social @cellpress.bsky.social

29.01.2026 15:58 β€” πŸ‘ 16    πŸ” 10    πŸ’¬ 0    πŸ“Œ 0

From the great @xuebingwu.bsky.social and team!

Highly recommend πŸ‘€

30.01.2026 15:39 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
A protest about ICE in Ann Arbor

A protest about ICE in Ann Arbor

A protest against ICE in Ann Arbor

A protest against ICE in Ann Arbor

β€œThe power of the people is greater than the people in power”

Even at 10F.

Ann Arbor this evening.

27.01.2026 00:11 β€” πŸ‘ 38    πŸ” 5    πŸ’¬ 0    πŸ“Œ 0
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Systematic Analysis of C-Termini of Small Open Reading Frame-Encoded Peptides in Human Cancer Cell Lines The C-termini often regulate protein biological functions through specific structures or modifications. Small open reading frame-encoded peptides (SEPs) make up a novel class of gene expression products that participate in various biological activities. Their C-termini have also been found to affect their function, but the polymorphism of SEPs’ C-termini has not yet been systematically elucidated. Using C-terminal proteomics, we identified 3636 C-terminal peptides from 2168 proteins in three human cancer cell lines, including 3364 peptides from 1901 classical proteins and 272 peptides from 267 SEPs. Approximately 20% of all of the identified C-terminal peptides had been reported in previous studies, originating from mRNA alternative splicing or protease cleavage, while more than 85% of the C-terminal peptides from SEPs were novel. Bioinformatics analysis revealed that most new SEP C-termini are likely produced by protease cleavage by the KLK, MMP, and CAT protease families. Others without accurately predicted hydrolysis sites may originate from alternative splicing or protein trimming. The intact and hydrolysis products of some SEPs were verified by immunoblotting. Some cleavage occurs in the predicted domain, which might affect SEPs’ function. This study enriches the SEP sequence information, provides experimental evidence for SEP in vivo processing, and supports the subsequent functional analysis of SEP.

Systematic analysis of C-termini of small open reading frame-encoded peptides.

#Riboseq
#proteomics
#darkproteome

pubs.acs.org/doi/10.1021/...

26.01.2026 12:34 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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The inside/ outside temperature differential exceeds 75 degrees this morning in Ann Arbor!

24.01.2026 13:38 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Sausage with eggplant with tomato sauce.

Sausage with eggplant with tomato sauce.

Lunch at Cafe du Lys in Geneva today. Magnificent!

21.01.2026 19:44 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0
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New preprint on technologies to scale up CRISPR screens.

We use them to map 665,856 pairwise genetic perturbations and outline a path to comprehensive interaction mapping in human cells.

We also introduce an approach for cloning lentiviral libraries with billions of elements.

20.01.2026 13:42 β€” πŸ‘ 88    πŸ” 41    πŸ’¬ 2    πŸ“Œ 3
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Congress passes bill to fund U.S. science agencies, rebuffing Trump's requested cuts The Senate voted to provide billions more to NASA, NOAA and the National Science Foundation than the president had asked for.

Nice to see strong support in Congress: β€œIn an 82-15 vote, the Senate approved a minibus budget bill to fund agencies involved in science and the environment, among other issues, through Sept. 30. The bill passed in the House last week by a vote of 397 to 28.” www.nbcnews.com/politics/pol...

16.01.2026 18:14 β€” πŸ‘ 12    πŸ” 6    πŸ’¬ 0    πŸ“Œ 1
75 Years of Mathematical Oncology Mathematics has long provided a quantitative framework to interpret cancer biology and treatment. Driven by richer biological and clinical data, the field has evolved into a multidisciplinary and translational endeavor - giving rise to Mathematical Oncology. Yet, the field's strong interdisciplinarity obscures a comprehensive view of its evolution, as well as the boundaries between Mathematical Oncology and adjacent domains. Here, we address this gap through a comprehensive bibliometric analysis spanning 75 years of mathematical research in oncology. Using a manually curated corpus (~1,500 papers) and a large query-based dataset (~19,000 papers), we map the field's conceptual and collaborative development over time. Independent analyses reveal sustained growth, high impact, and pronounced interdisciplinarity, together with a gradual shift from fundamental cancer biology toward therapeutic modeling. This reorientation underpins the emergence of Mathematical Oncology as a distinct field, separate from Systems Biology and Pharmacokinetics / Pharmacodynamics. We show how diverse concepts interlace within Mathematical Oncology, bridging applied mathematics, optimal control, evolutionary theory, and imaging. Collectively, we demonstrate that Mathematical Oncology is not merely the application of mathematics to cancer, but the use of interpretable models integrating clinical, biological, and physical knowledge to improve screening, understand disease evolution, guide therapy, and strengthen forecasting. ### Competing Interest Statement The authors have declared no competing interest. NCI, U54CA274507 Wenner-Gren Stiftelserna/the Wenner-Gren Foundations, WGF2022-0044 Cancer Prevention Research Institute of Texas, RP220225 National Science Foundation, DMS 2436499 MICIU/AEI/10.13039/501100011033 and ERDF/EU, PID2023-146347OA-I00 MICIU/AEI/10.13039/501100011033 and ESF+, RYC2022-036010-I

Time for some fun!
A lovely paper on mathematical oncology.

πŸ§ͺ

#Math
#Cancer
#CANsky

www.biorxiv.org/content/10.6...

16.01.2026 13:34 β€” πŸ‘ 8    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
Bus with sign that says AAATA

Bus with sign that says AAATA

Ann Arbor- where even the buses love to think about alternative polyadenylation sequences.

#RNAsky

16.01.2026 00:15 β€” πŸ‘ 19    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Kids with brain cancer were already in a life and death struggle. Then came Trump The US president vowed to β€˜end childhood cancer’. But his administration is dismantling the search for a cure and sending families scrambling for treatment

#ChildhoodCancer advocates-
This is a powerful piece on the negative impact of Trump administration policies on children with brain cancer, written by a spouse who lived this horror.

#DMG/DIPG
#ETMR
#Medulloblastoma
#PEDCAN

www.theguardian.com/us-news/ng-i...

15.01.2026 12:04 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 1
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Read our full statement by AAP President Dr. Andrew Racine on today’s HHS announcement about the childhood immunization schedule: www.aap.org/en/news-room...

05.01.2026 21:16 β€” πŸ‘ 240    πŸ” 116    πŸ’¬ 10    πŸ“Œ 21

Introducing you all to @mishamehta.bsky.social who has spent tireless hours advocating for children with brain tumors, supporting researchers doing their work, and building community for other families.

We are indebted to her: www.youtube.com/watch?v=_r_7...

#PEDCan
#CanSky
#CancerSurvivors

04.01.2026 18:14 β€” πŸ‘ 10    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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Humpback whale genomes reflect the increased efficiency of commercial whaling Humpback whale genomes reflect shifts in whaling practices and their potential impact on the animals’ adaptive capacity.

A new #ScienceAdvances study shows that commercial whaling in the Southern Ocean over the past century reduced the genetic diversityβ€”and possibly the evolutionary fitnessβ€”of the region’s humpback whales. https://scim.ag/4anxPpM

24.12.2025 19:12 β€” πŸ‘ 47    πŸ” 19    πŸ’¬ 0    πŸ“Œ 0

My lab is hiring a postdoc (ERC funded)! If you're interested, get in touch!

18.12.2025 08:36 β€” πŸ‘ 59    πŸ” 66    πŸ’¬ 3    πŸ“Œ 2
Figure S7 with panels A through UU

Figure S7 with panels A through UU

Wow this is a seriously serious supplementary figure from @cellpress.bsky.social today. Panels A through UU.

I get that Cell likes to minimize the number of supplementary figures. But is this really what is happening here?

www.cell.com/cell/fulltex...

17.12.2025 12:25 β€” πŸ‘ 106    πŸ” 21    πŸ’¬ 23    πŸ“Œ 22

Whoa!

29.11.2025 12:03 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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New paper β€œProteome-wide model for human disease genetics” is now live at Nature Genetics: rdcu.be/eRu7K
popEVE (pop.evemodel.org) finds the needles in the haystacks of human genetic variation:

24.11.2025 14:53 β€” πŸ‘ 31    πŸ” 12    πŸ’¬ 1    πŸ“Œ 0
THE ELEPHANT IN THE ROOM
Kay Ryan

The room is

almost all

elephant.

Almost none

of it isn't.

Pretty much

solid elephant.

So there's no

room to talk

about it.

THE ELEPHANT IN THE ROOM Kay Ryan The room is almost all elephant. Almost none of it isn't. Pretty much solid elephant. So there's no room to talk about it.

The room is
almost all
elephant.
Almost none
of it isn’t.
Pretty much
solid elephant.
So there’s no
room to talk
about it.

-Kay Ryan, β€œThe Elephant in the Room”
#everynightapoem

13.11.2025 00:13 β€” πŸ‘ 1061    πŸ” 376    πŸ’¬ 13    πŸ“Œ 8

So honored to take this position with @wearecbtn.bsky.social and it will be delightful to work on behalf of the pediatric brain tumor community!

11.11.2025 12:31 β€” πŸ‘ 11    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Battle between Trump and universities hurting scientific research in need of federal funding Federal research funding to universities has fueled breakthroughs for years. The White House is pressuring universities to align with the president's political agenda, or risk losing their funding.

Very well done story on 60 Minutes about the harms of grant terminations and freezes at Harvard with Joan Brugge, Don Engbar, David Liu, and a very compelling young cancer patient, now cured with Liu's technology.

Transcript and video here

www.cbsnews.com/news/researc...

10.11.2025 01:03 β€” πŸ‘ 151    πŸ” 61    πŸ’¬ 2    πŸ“Œ 0
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The R2 platform : Democratizing bioinformatics through an easily accessible public online software platform for non-experts in the field of Genomics

r2platform.com

#genomics #datascience #expertise #fair #public #science #bioinformatics #nocode #tcga #gtex #depmap

02.11.2025 21:10 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
JAMA viewpoint cover: "The New Clinician-Scholarsβ€”Dual Training in Medicine and Humanities Drives Health Research Innovation" by Vinayak Jain, Kayla Zamanian, and Lakshmi Krishnan. Published online September 18, 2025.

JAMA viewpoint cover: "The New Clinician-Scholarsβ€”Dual Training in Medicine and Humanities Drives Health Research Innovation" by Vinayak Jain, Kayla Zamanian, and Lakshmi Krishnan. Published online September 18, 2025.

πŸ’¬ Viewpoint: The evolving health care landscape necessitates a new clinician-scholar paradigm incorporating humanities and social sciences to address complex challenges and enhance scientific inquiry and health outcomes.

ja.ma/4qtBLL0

02.11.2025 11:00 β€” πŸ‘ 11    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

I feel like I’m going to reference this all the time. A+ meme.

28.10.2025 09:46 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0