Marion Pepper
@marionpepper.bsky.social
📤 2012
📥 400
📝 78
Immunologist. Immune memory.👩🏻🔬
reposted by
Marion Pepper
Helen Branswell 🇨🇦
15 days ago
1. Time for a
#flu
&
#measles
update. Six more kids have died from flu, bringing the year-to-date total to 66. Sadly there will be more deaths reported but hopefully this year doesn't approach last year's dreadful pediatric death toll.
#CDC
estimates ~90% of these kids weren't vaccinated.
2
71
35
reposted by
Marion Pepper
Helen Branswell 🇨🇦
about 2 months ago
1.
#CDC
posted new
#flu
data today. A 🧵 Another pediatric death was reported in the 2024-25 flu season, making it the deadliest flu season for kids since CDC started collecting this data point 20 years ago. 2024-25 has surpassed the 2009 H1N1 pandemic. 9 kids have died from flu so far this year.
1
130
78
reposted by
Marion Pepper
Jen Gommerman
3 months ago
Proud to share our work now out in Cell. We hope what we learned about IgA immune responses to rotavirus can be translated into better vaccines. Congratulations Dr. Kei Haniuda, an amazing PDF. TY
@uoftmedicine.bsky.social
for covering.
temertymedicine.utoronto.ca/news
loading . . .
Recent News
https://temertymedicine.utoronto.ca/news
2
55
10
reposted by
Marion Pepper
Deepta Bhattacharya
3 months ago
We're hiring for tenure-track faculty! Please apply if you have interests in immune responses to microbes and/or cancer, immune regulation, microbial infections (bacteria, viruses, parasites, fungi), the microbiota, and/or interests that span these disciplines.
arizona.csod.com/ux/ats/caree...
loading . . .
Assistant/Associate/Full Professor (T/TE)
Establish or continue a successful, extramurally funded research program that will advance knowledge in the broad areas of immunobiology, as defined a...
https://arizona.csod.com/ux/ats/careersite/4/home/requisition/24453?c=arizona&sq=req24453
0
7
9
reposted by
Marion Pepper
Kathleen Bachynski
3 months ago
“Thousands of very competitive projects in areas like cancer, diabetes, aging, neurological disorders and public health improvements most like went unfunded in 2025. Similarly, at the National Science Foundation, the roughly 3,000 fewer new grants encompassed reductions to every area of science”
loading . . .
The U.S. Is Funding Fewer Grants in Every Area of Science and Medicine
A quiet policy change means the government is making fewer bets on long-term science.
https://www.nytimes.com/interactive/2025/12/02/upshot/trump-science-funding-cuts.html?smid=nytcore-ios-share
0
148
129
reposted by
Marion Pepper
Mark Histed
4 months ago
A bad thing is unfolding at NIH this week: It looks like the Trump administration is trying to replace key civil servant scientific leaders, the Institute Directors, with political hires. These directors control the NIH budget, tens of billions. A bit of a video explainer here: 1/ 🧪
loading . . .
16
693
482
reposted by
Marion Pepper
Allen Institute
4 months ago
Congratulations to Karel Svoboda and
@jshendure.bsky.social
on their election to the National Academy of Medicine (
@nam.edu
)! Election to the Academy is one of the highest honors in health and medicine.
#NAMmtg
More on their journeys to this achievement:
alleninstitute.org/news/karel-s...
loading . . .
Karel Svoboda and Jay Shendure elected to National Academy of Medicine
The honor recognizes leaders who have demonstrated outstanding achievement and made lasting contributions to the advancement of the medical sciences, health care, and public health
https://alleninstitute.org/news/karel-svoboda-and-jay-shendure-elected-to-national-academy-of-medicine/
1
51
10
reposted by
Marion Pepper
Jay Shendure
5 months ago
Super excited about first Shendure/Baker Lab collaboration & preprint on a multiplex sequencing-based strategy for screening de novo proteome editors in mammalian cells. Kudos to the brilliant Chase Suiter (not here) &
@greenahn.bsky.social
on the work! Preprint here:
www.biorxiv.org/content/10.1...
0
97
33
reposted by
Marion Pepper
David Ho
5 months ago
Nobel Prize given for showing the importance of investing in science for innovation and long-term economic growth. Basically the opposite of what the US is doing. 😭
add a skeleton here at some point
13
418
143
Asthma is a chronic disease characterized by acute, intermittent, recurrent episodes of airway inflammation. A decade of work developing the tools, techniques and collaborations needed to figure out how CD4+ T cells in the lungs propagate disease can be found here:
www.biorxiv.org/content/10.1...
loading . . .
Tertiary lymphoid structures support the development of allergen-specific progenitor CD4+ T cells
Tissue-resident memory CD4+ T cells (TRM) are key sentinels of the adaptive immune response that provide a rapid, robust inflammatory response upon reactivation in non-lymphoid tissues. While CD4+ TRM...
https://www.biorxiv.org/content/10.1101/2025.10.03.680350v1.abstract?%3Fcollection=
5 months ago
1
43
18
More coming on what this means but this was one of those stories that took almost a decade to come together but was well worth the time. Also check out a companion piece on @biorxiv by Patrick Brennan!
add a skeleton here at some point
5 months ago
0
19
3
reposted by
Marion Pepper
Science Vs
5 months ago
This moment from our latest episode with science writer
@edyong209.bsky.social
is 🔥 We asked Ed — how do we talk up the benefits of science in the face of government cuts? He told us that's the wrong approach. 🧪 Listen wherever, or watch on Spotify 👇
open.spotify.com/episode/7Evh...
loading . . .
7
649
388
reposted by
Marion Pepper
Edward Nirenberg
5 months ago
Neat study—following 320 healthcare workers for almost a year, with 152 of them being infected, the authors examined whether or not COVID-19 associates with more upper respiratory tract infections (URTIs). It didn't (yay!). But, having a kid <5 associated with a 74% increase in the risk of URTIs.
loading . . .
Is COVID-19 Associated With an Increased Risk of Subsequent Upper Respiratory Tract Infections in Adults? A Prospective Cohort Study
AbstractBackground. In Autumn 2022, a surge in upper respiratory tract infections (URTIs) was observed worldwide. Individuals anecdotally reported increase
https://academic.oup.com/ofid/article/12/9/ofaf544/8246173?login=true&token=eyJhbGciOiJub25lIn0.eyJleHAiOjE3NjE2MDY4OTgsImp0aSI6ImRkNDYyMTQ3LWQ5MmItNDdmNi04ZGU1LWVhMzJkZDc5MTRkOSJ9
7
103
28
Excited to be here! Have to admit John Denver was running through my head as we wound our way through the country roads of West Virginia.
add a skeleton here at some point
5 months ago
0
3
0
reposted by
Marion Pepper
Helen Branswell 🇨🇦
6 months ago
If you read 1 thing today, please make it this: my so-talented colleague
@ericboodman.bsky.social
explains why babies in the US are vaccinated at birth against hep B — and what the human costs of changing that policy would be.
www.statnews.com/2025/09/11/n...
loading . . .
Dropping hepatitis B shots for newborns would ignore history and endanger children, scientists warn
People who study, treat, or have hepatitis B say ending routine vaccination at birth - as some vaccine critics want - could lead to a resurgence of the virus.
https://www.statnews.com/2025/09/11/newborn-hep-b-vaccine-debate-how-it-started/
5
266
125
reposted by
Marion Pepper
Apoorva Mandavilli
6 months ago
In a post on Truth Social, the president suggested that the CDC was being “ripped apart” over a question that was answered long ago — whether Covid vaccines work. (Gift article)
www.nytimes.com/2025/09/02/h...
loading . . .
Trump Wants Proof That Covid Vaccines Work. It’s Easy to Find.
https://www.nytimes.com/2025/09/02/health/trump-covid-vaccines.html?unlocked_article_code=1.i08.Am7M.LIrXtlHvDbw2&smid=url-share
14
46
23
reposted by
Marion Pepper
Carl Zimmer
6 months ago
Yesterday the president demanded that evidence about Covid vaccines be shown to the public. Today
@apoorvanyt.bsky.social
& I run through some of the studies made public over the past 4+ years that show that the vaccines work. Gift link:
nyti.ms/46k17Tq
loading . . .
https://nyti.ms/46k17Tq
56
1881
716
Enormous thanks to
@immunologyking.bsky.social
and
@maurogaya.bsky.social
for organizing a vibrant, invigorating
#EMBObarriertissues
workshop. A poignant reminder of how critical immunological studies are for ameliorating human disease. And a lot of fun people. 🐟
#wickelfisch
6 months ago
1
14
2
reposted by
Marion Pepper
Carolyn King
6 months ago
I only heard tonight that Mike is no longer with us. All credit to him in setting me on this path as an immunologist. The description of his teaching brings back such warm memories. I recognize so many of the scientists on his collage. What a gift to the world he was.
www.cell.com/immunity/ful...
loading . . .
Michael Cancro (1949–2025)
Just a few weeks ago, researchers and educators connected to immunology lost a wonderful friend and colleague: Michael Cancro, professor of pathology and lab medicine at the University of Pennsylvania...
https://www.cell.com/immunity/fulltext/S1074-7613(25)00130-X
1
11
1
reposted by
Marion Pepper
Deepta Bhattacharya
6 months ago
We mostly rely on Bayesian guesswork to predict how long antibodies will be produced for new vaccines/infections. Here, we find that some of the key programs are set *really* early. We hope early signatures can be used to predict and engineer durable vaccine immunity.
www.biorxiv.org/content/10.1...
loading . . .
Early, adjuvant-responsive epigenetic programs in B cells imprint subsequent plasma cell survival and the duration of humoral immunity
The duration of antibody production varies across different infections and vaccines. To define molecular programs that promote durable humoral immunity, we used mice deficient in ZBTB20, a transcripti...
https://www.biorxiv.org/content/10.1101/2025.08.15.666880v1
0
5
1
reposted by
Marion Pepper
Physicians for a Healthy Democracy
6 months ago
The ousting of Dr. Susan Monarez as CDC Director, followed within hours by the resignations of Dr. Deb Houry, Dr. Demetre Daskalakis, and Dr. Daniel Jernigan, mark a collapse of public health leadership with consequences that reach every American household.
16
509
184
reposted by
Marion Pepper
Karolinska Institutet
8 months ago
Applications are now open! We are recruiting 20 Assistant Professors in a wide range of subject areas. We're looking for early-career researchers with strong scientific merits and future potential. 🔗 All positions:
ki.se/en/about-ki/...
0
100
101
reposted by
Marion Pepper
Center for Immunology-UMN
6 months ago
With deep gratitude, we thank Dr. Marc Jenkins for his decades of leadership, mentorship, and dedication to the Center for Immunology. The foundation he built will guide and inspire us for years to come.
2
16
6
reposted by
Marion Pepper
Angie Rasmussen
6 months ago
If you believe that keeping your head down and being quiet will spare you from this fate, you are mistaken. This will be all of us.
add a skeleton here at some point
3
499
172
reposted by
Marion Pepper
Ivan Zanoni
7 months ago
#WeekendRead
!
#MomIsAlwaysMom
! Koch, Shenoy et al show
@science.org
that, in the first 7 days of life, breast milk IgGs (not IgAs!) recognize microbiota & limit, via Fc receptors, Tfh cell and B cell intestinal expansion, protecting against
#colitis
&
#allergy
during weaning!
loading . . .
Breast milk IgG engages the mouse neonatal immune system to instruct responses to gut antigens
Maternal antibodies fundamentally regulate gut immunity in the developing infant, yet the mechanisms underlying this process remain elusive. We found that maternal immunoglobulin G (IgG), ingested in ...
https://doi.org/10.1126/science.ado5294
1
27
3
reposted by
Marion Pepper
Jeremy Berg
7 months ago
I have a first serious attempt to estimate the consequences of multi-year funding for July. For new R01s, the amount of additional expenditure was $135 M The number of additional R01s that could have been funded is 182 1/9
5
61
43
reposted by
Marion Pepper
Helen Branswell 🇨🇦
7 months ago
The "data" package Secretary Kennedy used to bolster his argument for discontinuing
#BARDA
funding for
#mRNA
research doesn't support his argument.
@jakescottmd.bsky.social
lays it out in a must read for
@statnews.com
.
www.statnews.com/2025/08/13/r...
loading . . .
Kennedy's case against mRNA vaccines collapses under his own evidence
“This isn't scientific disagreement. It's either staggering incompetence or willful misrepresentation,” writes infectious disease physician Jake Scott.
https://www.statnews.com/2025/08/13/rfk-jr-mrna-vaccine-research-science-papers-justification-misreading/
8
283
137
reposted by
Marion Pepper
anil oza
7 months ago
By entirely funding more awards up front, the NIH is on track to fund just 1 in 25 applications Such a payline “would chase a lot of people out of science” former NCI director Ned Sharpless told us 🧪🔬
www.statnews.com/2025/07/29/n...
loading . . .
NIH is shrinking the number of research projects it funds due to a new Trump policy
NIH plans to shrink the share of grant applications it will award for the remainder of the fiscal year, in some cases by more than half.
https://www.statnews.com/2025/07/29/nih-cancer-institute-shrink-number-of-funded-research-grants/
5
97
66
reposted by
Marion Pepper
Ardem Patapoutian
7 months ago
No better time to call or email your members of Congress. Next year’s NIH budget is being debated in the Senate. A new nonpartisan campaign is making it easy to defend science and protect America’s innovation. Just follow this link to contact your representatives:
www.protectscienceandinnovation.org
add a skeleton here at some point
1
33
28
reposted by
Marion Pepper
Ruth Franklin
8 months ago
🎉 Over the moon to share the first paper from my lab!! We discovered an unexpected role for the cytokine OSM in lung epithelial homeostasis and repair. 🧵 1/n
www.science.org/doi/10.1126/...
loading . . .
Macrophage-derived oncostatin M repairs the lung epithelial barrier during inflammatory damage
Tissue repair programs must function alongside antiviral immunity to restore the lung epithelial barrier following infection. We found that macrophage-derived oncostatin M (OSM) counteracted the patho...
https://www.science.org/doi/10.1126/science.adi8828
12
142
36
reposted by
Marion Pepper
Nature
8 months ago
This is how to have difficult conversations with vaccine sceptics
loading . . .
113
1271
514
reposted by
Marion Pepper
Carolyn Bertozzi
8 months ago
Much appreciated support from biotech execs and investors 🙏
www.statnews.com/2025/06/27/b...
loading . . .
Proposed cuts could have ‘catastrophic effect,’ 110 biomedical, health sciences industry leaders tell Congress
Proposed cuts will have “a catastrophic effect on the advancement of biomedical and biotechnology capabilities in the United States,” more than 100 leaders of biomedical/health sciences companies tell...
https://www.statnews.com/2025/06/27/biotechnology-federal-funding-cuts-ceos-board-chairs-letter-to-congress/
5
194
95
reposted by
Marion Pepper
BK. Titanji
8 months ago
Great Measles 2025 update in NEJM. It is unfortunate we need this but measles is on course to return to endemicity in the United States and Canada. A self inflicted predicament thanks to the spread and rise of anti-vaccine rhetoric.
www.nejm.org/doi/full/10....
loading . . .
Measles 2025 | NEJM
In this article on measles, the authors review the epidemiology, clinical presentation, and associated illnesses as well as treatment and prevention strategies.
https://www.nejm.org/doi/full/10.1056/NEJMra2504516?query=featured_home
4
126
62
reposted by
Marion Pepper
Taia Wang Laboratory
8 months ago
Assistant professors studying immunity to infectious disease - don’t miss this opportunity! The BWF PATH program supports innovative research on molecular and/or systemic mechanisms that influence outcomes of pathogen exposure.
@bwfund.bsky.social
Learn more & apply:
www.bwfund.org/funding-oppo...
add a skeleton here at some point
0
8
2
reposted by
Marion Pepper
Heran Darwin, PhD
8 months ago
www.bwfund.org/funding-oppo...
loading . . .
Investigators in the Pathogenesis of Infectious Disease - Burroughs Wellcome Fund
https://www.bwfund.org/funding-opportunities/infectious-diseases/investigators-in-the-pathogenesis-of-infectious-disease/
0
10
9
reposted by
Marion Pepper
Eric Topol
8 months ago
The cover of this week's
@science.org
www.science.org/content/arti...
6
228
97
reposted by
Marion Pepper
Jeremy Berg
8 months ago
Red states and blue states alike Equal opportunity damage to biomedical research and the US economy
add a skeleton here at some point
1
48
17
reposted by
Marion Pepper
Harmit Singh Malik
8 months ago
Kudos to
@maitreya.bsky.social
lab alumnus Chris Large and all the authors!
add a skeleton here at some point
0
25
2
reposted by
Marion Pepper
8 months ago
I have witnessed the positive effect of the HPV vaccine as it debuted at the onset of my career in the 90's. The extreme cervical cancers we saw in early residency are almost a thing of the past. Horrific to think they could once again be de rigeur
0
66
15
reposted by
Marion Pepper
Carolyn King
9 months ago
We've worked on Hif deletion in CD4
#Tcells
for an embarrassingly long time. We gave up and had to rederive the T conditional KO mice after we stumbled on a phenotype in # NK cells from these mice (1+ years after data acquisition) It's been long, slow and fascinating. In a nutshell...
add a skeleton here at some point
2
26
8
reposted by
Marion Pepper
Brotman Baty Institute
9 months ago
POSTDOC ALERT: Applications now open for SeaBridge postdoc fellowship; opportunity to work on leading-edge biotech w/researchers at the Seattle Hub for Synthetic Biology.
brotmanbaty.org/news/new-pos...
@marionpepper.bsky.social
@jshendure.bsky.social
@coletrapnell.bsky.social
loading . . .
New Postdoc Fellowship Program Builds on Innovative SeattleHub Research | Brotman Baty Institute
BBI
https://brotmanbaty.org/news/new-postdoc-fellowship-program-builds-on-innovative-seattlehub-research
0
3
4
reposted by
Marion Pepper
Scott Delaney
9 months ago
To put these top-line budget numbers in context, cuts of this magnitude would effectively mean no new grants in FY2026. The entire extramural budget would go to existing, continuing grants. An abject failure of American ambition. And a betrayal of our global leadership in health science innovation.
add a skeleton here at some point
3
152
103
reposted by
Marion Pepper
Kristian G. Andersen
9 months ago
The end of US leadership in science, technology, and innovation. All in one little table. A tremendous gift to China, courtesy of the GOP.
nsf-gov-resources.nsf.gov/files/00-NSF...
37
1052
449
reposted by
Marion Pepper
Edward Nirenberg
9 months ago
This is accurate. COVID-19 also predisposes to blood clots even in mild cases and pregnancy itself has a heightened risk of blood clots because of the massive estrogen levels involved. These risks are drastically reduced with vaccination.
jamanetwork.com/journals/jam...
add a skeleton here at some point
3
136
60
reposted by
Marion Pepper
Taia Wang Laboratory
9 months ago
Please speak up now! This proposal will destroy science. NIH program officers are the unsung heroes of medical research. Their deep expertise and behind-the-scenes leadership have guided the field for decades, helping to drive the breakthroughs that improve and save lives every day.
add a skeleton here at some point
0
8
3
reposted by
Marion Pepper
Scott Delaney
9 months ago
⛔️ UPDATE: We obtained the full list of NIH terminations at Harvard. Lowlights: - 659 total grants at Harvard in the NIH-created list - $2.19 billion in total award value - $960 million in award remaining You can view them all using the "Harvard" tab on the airtable
grant-watch.us/nih-data.html
loading . . .
nih-data – Grant Watch
https://grant-watch.us/nih-data.html
1
65
48
reposted by
Marion Pepper
Angie Rasmussen
10 months ago
To be clear, if this bill passes, it will end all scientific research & medical training in the US. It will close hospitals. It will be economically devastating. Millions will lose their jobs. Call your representatives & tell them to vote fuck no on 15% IDC rates & the rest of this horror show.
add a skeleton here at some point
20
1042
517
reposted by
Marion Pepper
Edward Nirenberg
10 months ago
it boggles the mind that the same people who are absolutely sure that SARS-CoV-2 is a bioweapon are working destroy our ability to perform the exact research that would maximize our preparedness to counter such a bioweapon
14
294
73
The current attacks (and resulting capitulations) on science are tough enough for those of us who have been at this for years, but to do this to young scientists is unconscionable. This should only make the rest of us fight harder to protect you.
10 months ago
0
9
0
reposted by
Marion Pepper
Gregg Gonsalves
10 months ago
Word. “The future of biomedical research in the United States comes down to a race to see whether the biomedical research community can mobilize politically, access that vast but latent political power, before the White House can do enough sustained damage to make the whole question moot.”
6
488
128
Load more
feeds!
log in