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Jeff Mold

@jeffmold.bsky.social
1.6K followers 2.3K following 1.4K posts

American/Swedish Biomedical Scientist studying immunology and cancer. My favorite cell atlases say “here be dragons” on the UMAPs. @karolinska institute scholar.google.com/citations?hl=en&…

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Jeff Mold @jeffmold.bsky.social · 42m
I always wondered that but it wasn’t in the scope of this study. Maybe we will test in the future :).
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Jeff Mold @jeffmold.bsky.social · 20h
I am sure I have photobombs but I quite like him when he is not being crazy and just snuggling his turtle...
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Jeff Mold @jeffmold.bsky.social · 20h
But I would love someone to prove me wrong that T cells can themselves kill and maintain a complete destruction of all hair follicles in a human body for a sustained period of time with no obvious overt inflammatory consequences beyond hair loss. I concede it is possible, just feels unlikely?
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Jeff Mold @jeffmold.bsky.social · 20h
This is neat - but can you achieve total hair loss with this system as you see in Alopecia Totalis? I have always been wondering if you can get enough of a CD8 T cell response going to cover the entire body including eyelashes? Also humans don't have active HERV? www.nature.com/articles/s41...
nature.com
A two-hit mechanism triggers autoimmune hair loss - Nature
Immune dysregulation and physiological neural activation converge to trigger autoimmune alopecia.
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Jeff Mold @jeffmold.bsky.social · 03/10/2026
I think it must be cause sports is obvious and everything else is too complicated
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Jeff Mold @jeffmold.bsky.social · 03/10/2026
It’s funny to me that the one thing people of all backgrounds can agree on in this realm concerns money in sports. If you could get people to view everything else the way they see inequality in sports you got it. open.spotify.com/episode/1CrN...
open.spotify.com
Why Washington Is Trying to Rein In College Sports
The Daily · Episode
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Jeff Mold @jeffmold.bsky.social · 19/09/2026
Antler regeneration is pretty fascinating but not an ideal experimental model 😅. I wonder if anyone tried to transform cells with carcinogens
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Jeff Mold @jeffmold.bsky.social · 19/09/2026
“Celebrity intellectual” is enough of a red flag for me…
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Jeff Mold @jeffmold.bsky.social · 19/09/2026
Fun fact deer are relatively cancer resistant compared to other mammals possibly to accommodate antler regeneration needs: www.science.org/doi/10.1126/...
science.org
Genetic basis of ruminant headgear and rapid antler regeneration
The genes underlying the development of bony antlers and horns in ruminants are examined.
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Jeff Mold @jeffmold.bsky.social · 18/09/2026
www.science.org/doi/10.1126/...
science.org
Noise and diversity can boost stability
Random noise can break symmetries and enhance the stability of collective behaviors
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Jeff Mold @jeffmold.bsky.social · 17/09/2026
www.science.org/doi/10.1126/...
science.org
Multi-organelle signatures map cell-state diversity and metabolic adaptation in tissues
Cell-state diversity drives tissue adaptability, repair, and disease resilience, but capturing this complexity is a challenge. Current approaches rely on transcriptional profiling and overlook organel...
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Jeff Mold @jeffmold.bsky.social · 16/09/2026
Correlation or causation?
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Jeff Mold @jeffmold.bsky.social · 15/09/2026
Congrats to all involved. Was a huge effort by Luke et al. and very cool to see what single cell proteomics identifies that’s different from single cell RNAseq. Hint: covariant networks of proteins not identifiable in RNA data
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Jeff Mold @jeffmold.bsky.social · 31/08/2026
My dog buttons has some special gifts
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Jeff Mold @jeffmold.bsky.social · 28/08/2026
This little guy followed my me and my dog on our walk. I think he wants to be friends? I named him Bilbo
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Jeff Mold @jeffmold.bsky.social · 27/08/2026
To which deity and provide a public statement of support for one theistic hypothesis 😜
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Jeff Mold @jeffmold.bsky.social · 20/08/2026
I actually pay 200usd a month for this and after 3 months despite the amazing abilities of the algorithms I think it’s just blowing smoke up my ass :). This isn’t a genetic hater post
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Jeff Mold @jeffmold.bsky.social · 20/08/2026
Some day we will all look back at these early AI days and realize that it’s basically just following the “how to win friends and influence people” playbook ….
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Jeff Mold @jeffmold.bsky.social · 18/08/2026
Too bad they don’t make one of those for his brain
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Jeff Mold @jeffmold.bsky.social · 18/08/2026
I pessimistically read this in top immunology journals as efforts to make boring findings seem possibly exciting when they are likely well known typical responses
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Jeff Mold @jeffmold.bsky.social · 18/08/2026
Sometimes I feel like we fail as immunologists to clearly portray activation markers like PD1 as that rather than imply it always means exhaustion and transient lymphopenia after an infection as reorganization of cells to tissues rather than “depletion”.
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Jeff Mold @jeffmold.bsky.social · 06/08/2026
Invest in CABA! 😅
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Reposted by Jeff Mold
Waggoner Lab @labwaggoner.bsky.social · 06/08/2026
Autologous CD19 CAR T-cell therapy can be safely administered and exhibits biological activity in autoimmune patients without lymphodepletion @bloodjournal.bsky.social @cabalettabio.bsky.social ashpublications.org/blood/articl... ashpublications.org/blood/articl...
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Marc Veldhoen @marcveld.bsky.social · 05/08/2026
Virus reactivation in acute and long COVID-19 1,154 hospitalised COVID patients, followed up to 1 year. Assessing reactivation of latent viruses (EBV, CMV, HSV, Anelloviridae) using RNA sequencing plus immune, protein and metabolite profiling. www.nature.com/artic... 1/8
nature.com
Virus reactivation in acute and long COVID-19
Nature - Chronic reactivation of distinct herpesviruses and anelloviruses occur during acute and long COVID-19, and track with disease severity, inflammation and outcomes, revealing immune...
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Jeff Mold @jeffmold.bsky.social · 05/08/2026
Like maybe say include other patients with severe infections as a control or comparative group?
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Jeff Mold @jeffmold.bsky.social · 05/08/2026
Yeah I figured but this sort of writing isn’t going to help dismiss the mythology of Covid as a special immune deficiency disease… I’d expect better from nature and the slew of famous immunologists authored here no?
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Jeff Mold @jeffmold.bsky.social · 05/08/2026
Sounds like they aren’t clear it’s a covid thing. Might be worth stating that up front or looking at flu infection patients?
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Jeff Mold @jeffmold.bsky.social · 05/08/2026
Is this specific to Covid or is it typical of severe infections in general? I can’t figure out from reading on phone. www.nature.com/articles/d41...
nature.com
COVID can wake up a slew of dormant viruses inside you
Reactivation of typically harmless anelloviruses, in particular, seems to be linked with developing long COVID, study finds.
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Jeff Mold @jeffmold.bsky.social · 22/07/2026
Cool paper - though it is not at all surprising that plasma cells are in the CSF as implied in the discussion. I thought this was the foundation of the big Stanford nature paper and decades of work on OCBs. www.cell.com/cell/fulltex...
cell.com
Localized PD-1 CAR T therapy reprograms neuroinflammation
PD-1+ T follicular helper-like cells drive B cell-associated pathology in multiple sclerosis. Programmable PD-1-targeting CAR T cells selectively eliminate these pathogenic CD4 T cells while deliverin...
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Jeff Mold @jeffmold.bsky.social · 22/07/2026
Does every “big” researcher in academia who works on aging and big data have to have a company on the side that aims to monetize this information in some way? Isn’t this a red flag anymore?
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Jeff Mold @jeffmold.bsky.social · 10/07/2026
www.science.org/doi/10.1126/...
science.org
C1q and immunoglobulins mediate activity-dependent synapse loss in the adult brain
Complement component 1q (C1q), the initiator of the classical complement cascade, mediates synaptic elimination in development and disease, yet the triggers for its deposition on synapses remain uncle...
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Jeff Mold @jeffmold.bsky.social · 08/07/2026
www.nature.com/articles/s41... 😂😂😂😂😂😂😂😂😂
nature.com
Large language models can predict the results of social science experiments - Nature
Large language models can be used to estimate the results of social science experiments about as accurately as a group of human forecasters—even for experiments published after the...
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bioRxivpreprint @biorxivpreprint.bsky.social · 08/07/2026
Critical reassessment of lipophilic dye labeling reveals negligible incorporation into small extracellular vesicles derived form serum-free cultured cells www.biorxiv.org/content/10.64898/20…
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Jeff Mold @jeffmold.bsky.social · 03/07/2026
I’m struck by how often the “limitations” section of cell papers I read say “need more spatial and single cell tech”. Surely we can come up with better limitations 😅
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Sophie E. Hill @sophieehill.bsky.social · 12/05/2026
Step 1: Run regression of [scary Y] on [trendy X] using observational data Step 2: Magically "adjust" for the 20 bajillion imperfectly-measured confounders Step 3: Wait for a credulous journalist to write it up as causal www.theguardian.com/science/2026...
theguardian.com
Arts and cultural engagement ‘linked to slower pace of biological ageing’
Research from UCL suggests visiting art galleries or museums, singing and painting can help improve health outcomes
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Jeff Mold @jeffmold.bsky.social · 11/05/2026
They should get Jay Wright to coach!
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Jeff Mold @jeffmold.bsky.social · 11/05/2026
More nba teams should assemble groups of players who were trained at college. Charlotte got a few dukies and they are up and coming
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Jeff Mold @jeffmold.bsky.social · 11/05/2026
I thought they’d win it all in the beginning of the season. I should’ve bet on it if I bet. They have the best team Not any individual player but the fact half of them are Villanova guys (it feels) may explain the chemistry
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Jeff Mold @jeffmold.bsky.social · 11/05/2026
Every cancer atlas I see spends a ton of effort on all the cells in the tumor except the tumor cells 😅🤪
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Philip N Cohen @philipncohen.com · 10/05/2026
This from @pardoguerra.bsky.social is right: Not every useful unit of research needs the same amount of peer review resources. We need an incentive structure to support alternatives. Not said: there is no way to get there. /1
pardoguerra.org
It’s time to get rid of the peer-reviewed paper
The peer-reviewed journal article, perhaps the single most important device behind the expansion of scientific knowledge in the last century, is an extraordinarily expensive way to share novelty: e…
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Jeff Mold @jeffmold.bsky.social · 01/05/2026
Looks like my guy!!
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Jeff Mold @jeffmold.bsky.social · 30/04/2026
“On my podcast” are the 3 cringiest words in English at the moment
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Oded Rechavi @odedrechavi.bsky.social · 27/04/2026
It’s not review unless it comes from the Review region of France, otherwise it’s just sparkling criticism
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Oded Rechavi @odedrechavi.bsky.social · 27/04/2026
Academia feels increasingly like playing Monkey Island, if you miss something as absurd as picking up a rubber chicken with a pulley in the first scene, you only realize much later that you’re stuck and can’t pass to the next stage (👇 see below 1/3) www.science.org/content/arti...
science.org
Abrupt change to European funder’s rules leaves researchers shut out
Flood of proposals to European Research Council—perhaps unleashed by AI—means unsuccessful applicants must wait longer to reapply
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Andrew G. York @andrewgyork.bsky.social · 24/04/2026
I've been getting questions about this paper all week: www.cell.com/cell/abstrac... They make EXTRAORDINARY claims - fortunately, these are trivial to verify/falsify. Unfortunately, there's other concerns.
cell.com
Electromagnetic field-inducible in vivo gene switch for remote spatiotemporal control of gene expression
The EMF-inducible gene switch (Ei) platform provides precise spatiotemporal control of gene expression through Cyb5b-mediated calcium oscillations. This system enables Ei-OSK-driven in vivo rejuvenati...
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Jeff Mold @jeffmold.bsky.social · 25/04/2026
What’s the end game? Will reputation and name/title be a qualifying factor when we discuss research (more than now)? I see this as the death of many publishing outlets who can’t do proper QC… maybe a good thing?
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Inigo Martincorena @imartincorena.bsky.social · 15/04/2026
Excited to share our latest work in Nature. Applying single-molecule and single-cell DNA sequencing methods, we uncover an extraordinary landscape of somatic mutations in immune checkpoint genes in autoimmune B cells, suggesting that somatic mutations may be key to autoimmunity [1/n] rdcu.be/fdqbr
rdcu.be
Polyclonal selection of immune checkpoint mutations in thyroid autoimmunity
Nature - Polyclonal selection of immune checkpoint mutations in thyroid autoimmunity
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Timothy Fuqua @timothyfuqua.bsky.social · 23/04/2026
I’m excited to share the draft for our perspective piece on »Emergence Biases« that I wrote with @vakirlis.bsky.social on arxiv: arxiv.org/abs/2604.20477
arxiv.org
Emergence biases in molecular evolution
Biases in molecular evolution can significantly influence evolutionary trajectories. They have been described in a variety of contexts such as development and mutation, but not for acquiring new funct...
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Jeff Mold @jeffmold.bsky.social · 21/04/2026
My great friend @aginigfencer.bsky.social posted a preprint on JAML (also called AMICA1) which is a very clonal gene in T cells so I feel obliged :) www.biorxiv.org/content/10.6...
biorxiv.org
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Jeff Mold @jeffmold.bsky.social · 13/04/2026
This is buttons. I call this move the wiggle worm. I know he’s itching his back but when I say wiggle worm he now does this 😂. I guess I can vocally make him itchy
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