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David Posner, PhD

@davidposner.bsky.social
262 followers 273 following 15 posts

Postdoc @HepworthLab at Manchester Uni; formerly PhD at Cambridge Uni. Cellular neuroimmunologist 🌈 all things T cells, B cells and Taylor Swift 🇲🇽 🇺🇸 🇬🇧 he/him

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David Posner, PhD @davidposner.bsky.social · 30/03/2026
@hepworth-lab.bsky.social new paper alert. Matt and I wrote a research highlight about recent papers that describe mechanisms of ILC2-neuron crosstalk. If you're interested in reading it, check it out! onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
<em>Immunology & Cell Biology</em> | ASI Journal | Wiley Online Library
Emerging roles of ILC2 in neuronal crosstalk across organs. In a series of studies published in 2025, ILC2 were shown to regulate nervous system function across a range of organs across the body. Wit...
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Reposted by David Posner, PhD
Frederick "Erick" Matsen @matsen.bsky.social · 11/12/2025
Over the past 5+ years I've had the honor of working with @wsdewitt.github.io @victora.bsky.social and many others on a project to "replay" affinity maturation evolution from a fixed starting point. matsen.group/general/2025...
matsen.group
Replaying evolution to learn about the fitness landscape of affinity maturation
A five year collaboration with the Victora lab is bearing fruit for evolutionary biology.
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Carla Nowosad PhD @carlanowosad.bsky.social · 09/12/2025
My latest 'pinch yourself' moment from the Lab. We previewed two really really exciting papers from the Eisenbarth and Pabst Labs for @cp-immunity.bsky.social Read our summary here> www.cell.com/immunity/ful... A big well done to Gaby Berman in my group and authors of both excellent manuscripts!
cell.com
Intestinal plasma cells get in formation
IgA plasma cells are the most abundant antibody-secreting reservoir in the body, yet details of their origin and behavior remain elusive. In this issue of Immunity, Simons et al. and Siniscalco et al....
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Reposted by David Posner, PhD
Hepworth Lab @hepworth-lab.bsky.social · 25/11/2025
www.manchester.ac.uk/about/news/s...
manchester.ac.uk
Stroke scientists gather more evidence for presence of ‘gut-brain axis’
Research on mice by scientists at The University of Manchester has shed new light on why the guts’ immune system changes after a stroke and how it might contribute to gastro-intestinal problems.Publis...
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David Posner, PhD @davidposner.bsky.social · 22/11/2025
New paper out! @hepworth-lab.bsky.social looks at how stroke affects intestinal humoral immunity! www.sciencedirect.com/science/arti...
sciencedirect.com
Cerebral ischaemic stroke results in altered mucosal antibody responses and host-commensal microbiota interactions
Stroke is a devastating neurological event with a high risk of mortality that results in long-term sequalae that extend beyond the central nervous sys…
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Siegenthaler Lab @siegenthalerlab.bsky.social · 03/10/2025
Listening to the new Taylor Swift album & working on figures, sharing a 🤩 image for #FluorescenceFriday [penetrating 🐭 cerebral arteriole at the pial surface, aSMA in yellow = smooth muscle cell, pan-laminin in cyan = basement membrane, fibroblast in magenta...squeezing in to cover that vessel 🫂)
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David Posner, PhD @davidposner.bsky.social · 03/10/2025
The outstanding Elizabeth Cooper from @gilbertsonlab.bsky.social just shared a new preprint!! Using cutting-edge tech and models, she found that brain tumours instruct cranial haematopoiesis allowing immunotolerance of childhood brain tumours and CNS development. www.biorxiv.org/content/10.1...
biorxiv.org
Childhood brain tumours instruct cranial haematopoiesis and immunotolerance
Recent research has revealed a remarkable role for immunosurveillance in healthy and diseased brains, dispelling the notion that this organ is a passive immune-privileged site[1][1]–[3][2]. Better und...
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David Posner, PhD @davidposner.bsky.social · 29/09/2025
Happy to see this published over 10 years after working on it! It was a fun project back in my undergrad days in NY. Using 2D NMR we provide the first direct evidence that fireflies utilise dietary cholesterol to generate lucibufagins, their chemical defense system. pubs.acs.org/doi/10.1021/...
pubs.acs.org
The Source of Firefly Chemical Defenses: Endogenous Biosynthesis of Lucibufagins from Cholesterol
Fireflies, also known as lightning bugs, are beetles in the family Lampyridae. Several species of North American fireflies have been investigated to determine their toxic components. The primary molec...
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Doug Dyer @douglaspdyer.bsky.social · 12/09/2025
We have a new Postdoc position advertised as part of our recent long-term Wellcome funding to join an established Postdoc and technician. I’m so excited to explore the role of the glycocalyx in CNS-inflammation. So many tools and expertise to work with! www.jobs.manchester.ac.uk/Job/JobDetai...
jobs.manchester.ac.uk
Research Associate in in Neuro-Immunology and Extraceullar Matrix Biology (ImmunoMatrix):Oxford Road
Our Glyco-Immunology (Dyer) lab has produced published and preliminary data demonstrating that an under-appreciated structure, the glycocalyx, on endothelial- and immune- cells regulates immune cell recruitment by:
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Reposted by David Posner, PhD
Nature @nature.com · 16/09/2025
Science isn’t really moving towards equity; institutions are just perfecting the appearance of equity. We need to build an alternative system, says Dolors Armenteras go.nature.com/4nzGhp9
go.nature.com
Equity in science is a beautiful lie — and I’m done pretending
Science isn’t really moving towards equity; institutions are just perfecting the appearance of equity. We need to build an alternative system.
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David Posner, PhD @davidposner.bsky.social · 16/09/2025
New paper alert! 🎉 Check it out here: biorxiv.org/content/10.1... Here we show that intestinal bacterial, helminth and fungal challenges polarise CD4 T cell populations in the dural meninges.
biorxiv.org
Intestinal challenges shape the polarisation of protective dural memory CD4 T cells
The meninges house several innate and adaptive immune cell populations[1][1]–[3][2]. These predominantly localise within the dura mater and include gut-derived IgA-secreting plasma cells[4][3]. Whethe...
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David Posner, PhD @davidposner.bsky.social · 01/09/2025
Just back from Basel after an inspiring week at the EMBO Tissue Immunity workshop 🧠🫁🧑‍🦲. I loved giving a flash talk and hearing so many exciting ideas on barrier immunity. Huge thanks to @hepworth-lab.bsky.social for supporting my participation!
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Reposted by David Posner, PhD
Roychoudhuri Lab @roychoudhurilab.bsky.social · 05/08/2025
Please sign this Parliamentary petition calling for comprehensive trade sanctions on Israel - the limited sanctions on specific members of the Israeli Government by the UK do not go far enough: petition.parliament.uk/petitions/72...
petition.parliament.uk
Petition: Review all trade ties with Israel, suspend 2030 roadmap & impose trade sanctions
We call on the Government to review existing trade ties with Israel, suspend the 2030 Roadmap for UK-Israel bilateral relations and impose trade sanctions upon Israel.
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Reposted by David Posner, PhD
Narita Lab @narita-lab.bsky.social · 25/07/2025
Spread the news! We are excited to expand our research team, working on cellular senescence, at the Cancer Research UK Cambridge Institute, University of Cambridge. jobs.cam.ac.uk/job/52026/ jobs.cam.ac.uk/job/52027/
media.tenor.com
a yellow sign that says we 're hiring
ALT: a yellow sign that says we 're hiring
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Reposted by David Posner, PhD
immunoboys @immunoboys.bsky.social · 29/04/2025
Fenestrated endothelium enables the extravasation of immune complexes into the synovium. There the interaction of macrophages (producing IL1b, CXCL1) and nociceptive neurons (producing CGRP) induce pain and inflammation. Hasegawa &al 2024 www.nature.com/articles/s41... #RheumSky 🧪⑂
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David Posner, PhD @davidposner.bsky.social · 11/02/2025
New paper from Virginia Pedicord's lab just dropped! www.nature.com/articles/s41...
nature.com
Gut microbiota-derived hexa-acylated lipopolysaccharides enhance cancer immunotherapy responses - Nature Microbiology
Hexa-acylated lipopolysaccharides from the gut microbiota are associated with efficacy in patients with cancer receiving anti-PD-1 and stimulate host immune activation for enhanced anti-tumour immunit...
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Reposted by David Posner, PhD
Hepworth Lab @hepworth-lab.bsky.social · 03/02/2025
The pre-proof version of our new review is online now at @mucosalimmunol.bsky.social. @lukeocyte.bsky.social and Alanna Kelly (not on Bluesky) deep dive into ILC niches, and discuss how cellular interactions, nutrients and ECM shape our innate immune system! www.sciencedirect.com/science/arti...
sciencedirect.com
There’s no place like home: How local tissue microenvironments shape the function of innate lymphoid cells
Innate lymphoid cells (ILC) have emerged as critical immune effectors with key roles in orchestrating the wider immune response. While ILC are relativ…
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Seth Thomas Scanlon @immunoeditor.bsky.social · 28/01/2025
A #Science #Immunology Instant Release: @mmr2.bsky.social, Diane Mathis, & colleagues at @harvard.edu & @institutocajal.bsky.social describe specialized meningeal #Treg subsets that promote #homeostasis of the mouse #brain #meninges & #parenchyma!
science.org
The meninges host a distinct compartment of regulatory T cells that preserves brain homeostasis
Meningeal regulatory T cells restrain local interferon-γ–producing lymphocytes, thereby safeguarding parenchymal brain homeostasis.
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David Posner, PhD @davidposner.bsky.social · 26/01/2025
PhDone!!! So happy that I PASSED my viva! Major thx to outstanding examiners @juanquintana.bsky.social and @immunoah.bsky.social for giving me a run for my money 🥳. The biggest thx is to the people below, who made it all possible 😘. @mrclmb.bsky.social @caiuscollege.bsky.social Ready for postdoc!
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David Posner, PhD @davidposner.bsky.social · 12/01/2025
I've always been passionate about outreach and social justice, especially when in science. I wrote this article @nature.com to inspire others to generate similar initiatives. nature.com/articles/d41586-024-03562-4 I'll be sharing a new large-scale programme I'm launching soon. Stay tuned!
nature.com
How I’m creating career opportunities for researchers back home in Mexico
David Posner hopes that his teaching and outreach programmes could apply to other low- and middle-income countries.
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Reposted by David Posner, PhD
γδ T cell Forum @forum-gd.bsky.social · 11/01/2025
Please join us for our January #GDTcellClub #gdTcells webinar with talks by Drs. Pedro Papotto and Victoria Stary. Jan 16 @ 12pm (New York) | 5pm (London) nyulangone.zoom.us/j/9589051706... Zoom ID: 958 9051 7066 Passcode: 369081 @payalyokota.bsky.social @ph-papotto.bsky.social
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Reposted by David Posner, PhD
Hepworth Lab @hepworth-lab.bsky.social · 10/01/2025
Exciting new pre print out now from @ph-papotto.bsky.social and @profjudiallen.bsky.social... Bluesky-orial below!
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David Posner, PhD @davidposner.bsky.social · 10/01/2025
My first week in my new job is done! Let's see what's next 😎
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David Posner, PhD @davidposner.bsky.social · 08/01/2025
I'm so excited to announce that I've joined the @hepworth-lab.bsky.social in Manchester for my postdoc! So pumped to finally be here and ready to get some science done 🤩💪 @lydiabeckeriii.bsky.social
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