Jesse Shapiro
@bjesseshapiro.bsky.social
📤 1747
📥 746
📝 443
Macrobe qui aime les microbes
http://www.shapirolab.ca/
pinned post!
One of my favourite serendipitous results from the lab came about because we were long-read sequencing bacterial: Vibrio cholerae, which is "supposed to" have TWO circular chromosomes (3 + 1 million base pairs) often has just ONE fused chromosome (4 Mbp).
www.nature.com/articles/s41...
(1/n)
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Prevalent chromosome fusion in Vibrio cholerae O1 - Nature Communications
The pathogenic bacterium Vibrio cholerae typically has two circular chromosomes. Here, Cuénod et al. analyse 467 clinical isolates and identify several independent chromosome fusion events that are li...
https://www.nature.com/articles/s41467-025-60699-0
6 months ago
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Jesse Shapiro
Nathan Grubaugh
about 23 hours ago
Variations in annual dengue intensities are explained by temperature anomalies Our new work led by Abbey Porzucek,
@rafalpx.bsky.social
,
@colincarlson.bsky.social
, Dan Weinberger to develop a method to compare relative dengue intensity between years and countries.
www.medrxiv.org/content/10.6...
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Jesse Shapiro
Zamin Iqbal
about 24 hours ago
Hey folks, am looking for examples of circularised/full plasmid sequences from "unusual " bacterial species, sequenced since 2020 (as independent validation for a plasmid identification tool that was trained on refseq2020+plsdb). Any tips?
#microsky
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Jesse Shapiro
Kristian G. Andersen
4 days ago
Tens of thousands of annual cases of chickenpox, rotavirus, and other vaccine preventable diseases a year - in a country of six million people. Not only will Denmark’s vaccine schedule not work for the US, it already isn’t working for Denmark.
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Sounds like someone is volunteering to review papers over the holidays - editors take note! ;)
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4 days ago
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Jesse Shapiro
Montreal Gazette
4 days ago
'Go Habs Go' sneaks back into STM system via sly Hellmann's ad campaign
montrealgazette.com/sports/hocke...
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Preprint now, submit to journal in January
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4 days ago
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Ok now everybody’s getting on board
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4 days ago
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PSA:
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4 days ago
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Jesse Shapiro
Michael Brockhurst
4 days ago
We did a genome. Not just any genome. A Eukaryote! Telomeres, centromeres, introns! What the hell?! With megabrains
@guyleonard.bsky.social
Tom Richards, Fiona Savory at Oxford. A fun collaboration! Keep em peeled for more algal preprints coming soon!
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Jesse Shapiro
Deepa Agashe
4 days ago
How do bacteria deal with double costs? And how costly are unusual levels of mistranslation anyway? In short - antibiotics are more of an issue than less/more mistranslation, but the latter changes how populations deal with antibiotics. For the long story, check out our new paper!
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Anyone interested in discussing this opportunity to eat, drink, be merry and ski with me, my DMs are open! (Oh yeah, and do some science to the tune of $1M/year x 8 years + $500k x 4 years)
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5 days ago
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Allow me to introduce Dr. Sana Naderi ! Her thesis brilliantly followed SARS-CoV-2 evolution (1) within hosts, (2) across animal species, and (3) into wastewater (not necessarily in that order...) 1)
doi.org/10.1093/ve/v...
2)
elifesciences.org/articles/83685
3)
doi.org/10.1101/2025...
5 days ago
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Jesse Shapiro
Microbiology Society
6 days ago
Born
#OnThisDay
in 1922, Esther Lederberg was the first to isolate the lambda phage in 1951. She characterised the lysogenic phase, whereby the phage are able to integrate into the bacterial genome, staying dormant. This discovery made them a model tool of study, leading to many more breakthroughs.
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Jesse Shapiro
Elinne Becket, PhD
6 days ago
I always tell my pre-PhD mentees: the first 2 years of PhD are brutal time-wise and workload-wise, the last 3 years are brutal *emotionally*. You will question everything. Lean on your support system - peers and mentors- during these times. I wouldn't have gotten through without them.
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Jesse Shapiro
Carl T. Bergstrom
7 days ago
Just decline the peer review invitation. What are you people even doing?
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More than half of researchers now use AI for peer review — often against guidance
A survey of 1,600 academics found that more than 50% have used artificial-intelligence tools while peer reviewing manuscripts.
https://www.nature.com/articles/d41586-025-04066-5
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Gene-specific selective sweeps for the win! (Not that anyone is keeping score. Genome-wide sweeps and soft sweeps are also great)
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6 days ago
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Jesse Shapiro
Nandita Garud
6 days ago
Grateful to share our paper on gene-specific selective sweeps in human gut microbiomes, now out in Nature! It has been a joy to work with
@rwolff.bsky.social
, whose insights and hard work made this possible.
www.nature.com/articles/s41...
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Gene-specific selective sweeps are pervasive across human gut microbiomes - Nature
Development and application of the integrated linkage disequilibrium score (iLDS) reveals both selective pressures impacting the human gut microbiome and the mechanisms by which gut bacteria adapt to ...
https://www.nature.com/articles/s41586-025-09798-y
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Jesse Shapiro
Matthew Hahn
6 days ago
Have you ever wondered: just how strong *is* the evidence for Muller's ratchet on mtDNA? Well, wonder no more! (Project led by Yu Mo, with
@smishra677.bsky.social
and
@yadirapga.bsky.social
) "No molecular evidence for Muller's ratchet in mitochondrial genomes"
www.biorxiv.org/content/10.6...
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No molecular evidence for Muller's ratchet in mitochondrial genomes
Muller's ratchet predicts that non-recombining genomes can accumulate deleterious mutations, though molecular evidence for it is rare. Previous studies have tried to detect ratchet-like behavior in mi...
https://www.biorxiv.org/content/10.64898/2025.12.16.694700v1
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Nonia Pariente
6 days ago
Yearly reminder that the world will not end if that new manuscript or revision sits on your desk for a couple more weeks, or you are realistic about decision times. Editors & reviewers are people too, are getting swamped with work just about now, and will likely enjoy a well-deserved break soon đź§Ş
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Jesse Shapiro
Jack Todd
6 days ago
My column on the death of Michael Whalen, who set the standard for sports broadcasting in this country – a standard that has slipped drastically since he retired.
montrealgazette.com/sports/hocke...
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Obituary: Montreal sports broadcaster Michael Whalen was a master storyteller
Veteran journalist, who died last week at 82, covered Montreal's sports scene with aplomb for TSN from 1986 to 2007.
https://montrealgazette.com/sports/hockey/hockey-inside-out/obituary-montreal-sports-broadcaster-michael-whalen-was-a-master-storyteller
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Jesse Shapiro
Harmit Singh Malik
7 days ago
đź§µ đź§Ş
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Jesse Shapiro
Jeffrey Joy
7 days ago
Congratulations
@angela-mcl.bsky.social
and co-authors on publication of this important work quantifying the cases averted by PrEP in BC!
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Jesse Shapiro
Alan McNally
7 days ago
The first preprint from
@izziepotterill.bsky.social
PhD. A clone within ST131 clade C with a totally unique capsule region.
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Jesse Shapiro
Vaughn Cooper
8 days ago
This is a disaster. I would not be where I am today without the constructive (and yes, sometimes frustrating) reviews my NSF proposals received as a young investigator. This feedback didn't come from the POs but rather the peer reviewers and panelists who saw how I was trying to enter the field
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Jesse Shapiro
Ben Vezina
11 days ago
Absolutely stoked to have this published in
@plosbiology.org
We looked at the metabolism of
#Klebsiella
pneumoniae 🦠🧫. We not only demonstrated lineage-specific
#metabolism
, but that lineages can cross-feed and support each other.
journals.plos.org/plosbiology/...
#MicroSky
#microbiology
🧬 🧪 💊
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A metabolic atlas of the Klebsiella pneumoniae species complex reveals lineage-specific metabolism and capacity for intra-species co-operation
Why are there so many co-circulating Klebsiella pneumoniae clones? Using genomics and large-scale metabolic modelling of >7000 isolates, this study identifies structured, clone-specific metabolic spec...
https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3003559
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Jesse Shapiro
Julie Talbot
9 days ago
Important work right here 👇 "Our data show a global pattern, a worldwide process of targeting climate and environmental protest. We argue that this reflects a wider ideological and political project to maintain the hegemonic interests of powerful states and corporations"
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Jesse Shapiro
Stephen Heard
11 days ago
We love to fetishize "top" researchers and give them special big pots of money. But we get far more science by spreading money among all researchers (closer to the NSERC DG model). This old post is magically relevant again...
scientistseessquirrel.wordpress.com/2015/05/12/w...
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Jesse Shapiro
RuthLeyMicro
10 days ago
🦠🧫 a collaboration with the Institute for Tropical Medicine in Tübingen and CERMEL in Gabon
@cmfi.bsky.social
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Cleared bike path beside groomed ski path is the best of winter in Montreal
10 days ago
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Jesse Shapiro
Tatiana Dimitriu
11 days ago
Our story on plasmid streamlining is now published in PLoS Biology! With
@andrewmatthews.bsky.social
and
@sonjalehtinen.bsky.social
#MicroSky
#Mevosky
journals.plos.org/plosbiology/...
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Plasmid streamlining drives the extinction of antibiotic resistance plasmids under selection for horizontal transmission
Conjugative plasmids play an important role in the spread of antimicrobial resistance (AMR) genes among pathogenic bacteria. This study shows that AMR loss in evolving populations is associated with t...
https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3003564
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I mostly experience the benefits of this rule (no right turns on red) as a cyclist or pedestrian. But even as a driver, it's great. Red light? Just stop. Chill. Don't feel tempted to edge forward into a right turn. Just relax and wait for the light to change.
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13 days ago
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Jesse Shapiro
Will Ratcliff
14 days ago
1/28 New preprint up, which I think is the best theoretical idea I've ever had. We asked a simple question: what are the costs of investment into non-reproductive somatic cells? Turns out these costs decrease with the *logarithm* of organism size!
www.biorxiv.org/content/10.6...
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The fitness costs of reproductive specialization scale inversely with organismal size
The evolution of reproductive specialization represents a fundamental innovation in multicellular life, yet the conditions favoring its evolution remain poorly understood. Here, we develop a populatio...
https://www.biorxiv.org/content/10.64898/2025.12.08.693006v1
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Heather Hendrickson
13 days ago
It’s officially happening folks! The Microbial Population Biology Gordon Research Conference is back in Andover, New Hampshire starting June 27th of 2027! See you there!!
@wcratcliff.bsky.social
@ksbakes.bsky.social
@surtlab.bsky.social
#microsky
#mevosky
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How it’s going.
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13 days ago
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Perfect day for a winter BIXI!
13 days ago
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Jesse Shapiro
Caroline Bartman
15 days ago
some people have security blankets i have the 40 hidden slides in my presentation just in case i get asked specific obscure questions
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Jesse Shapiro
Alexander Robertson
15 days ago
My first lead author paper is out with Ben Kerr and
@alisonfeder.bsky.social
! We found that making an antiviral too strong can sometimes make resistance easier to evolve. This has implications for how we design drugs, choose doses, and think about viral evolution in the face of treatment. (1/n)
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Intracellular interactions shape antiviral resistance outcomes in poliovirus via eco-evolutionary feedback - Nature Ecology & Evolution
A model of intrahost poliovirus replication shows that, after several rounds of replication, pocapavir, a poliovirus capsid inhibitor, collapses viral density, preventing intracellular interactions th...
https://www.nature.com/articles/s41559-025-02926-x
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Jesse Shapiro
Mark Peifer (He, him)
15 days ago
I taught Genetics again this year. We need to include discussion of the problematic history of our field, especially as the claims of eugenics are once again centered in our political discourse. Last year I wrote this piece, explaining my reasoning and approach đź§Ş 1/n
www.cell.com/trends/genet...
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Ryan Doughty
15 days ago
Some of my work from the first year of my PhD is out as a preprint, please check it out! Virus evolution is rapid and prolific both across and within individuals. However, a significant amount of variation remains hidden due to computational bottlenecks in read-alignment and variant calling 1/n
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I remember this!
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15 days ago
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Jesse Shapiro
Cult MTL
17 days ago
“Every year, when I see 14 beams of light projected into the sky above Mount Royal, I have to catch my breath. “36 years ago, 14 young women were murdered in one of the most violent examples of misogynistic terrorism Canada has ever known.” An editorial by
@mtltoula.bsky.social
.
#December6
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Gender-based violence is an everyday reality, and it starts with minimizing misogyny
As we highlight 16 Days of Activism Against Gender-Based Violence and the upcoming anniversary of the Montreal massacre, can we take a moment to reflect on all the different forms this violence takes?
https://cultmtl.com/2025/11/gender-based-violence-is-an-everyday-reality-and-it-starts-with-minimizing-misogyny/
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Chris McCray
18 days ago
Rencontre concernant la piste cyclable sur Atateken, lundi prochain à 18h30 à la salle du conseil de Ville-Marie. Cette piste devrait servir de détour de la piste Berri durant environ 2 ans. Je vous invite à assister si vous avez des opinions sur cette piste!
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Jesse Shapiro
Le Neuro (Institut-Hôpital neurologique de Montréal)
26 days ago
70-80% of the world has no access to MRI. At The Neuro, neuroscientist Udunna Anazodo is leading Imaging Without Borders (IMAGINE). An Open Science initiative developing low-cost, portable MRI systems using 3D-printing. đź”— Learn more:
www.mcgill.ca/neuro/articl...
@mcgill.ca
@cusm-muhc.bsky.social
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Jesse Shapiro
SciCommic
6 months ago
Oh, Adenine Why can’tcha be true?
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Jesse Shapiro
Marjon de Vos
18 days ago
New preprint:
www.biorxiv.org/content/10.6...
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Pyocyanin produced by Pseudomonas aeruginosa Creates Legacy Effects That Boost Antibiotic Resistance Evolution in Enterococci
Polymicrobial infections are small communities of multiple interacting bacterial species. Interactions among constituent species may modify the growth of community members in the presence of antibioti...
https://www.biorxiv.org/content/10.64898/2025.12.04.692361v1
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Jesse Shapiro
Asher Leeks
19 days ago
It was great to write a brief commentary with
@sociovirology.bsky.social
on
@nanamikubota.bsky.social
and
@vscooper.micropopbio.org
's recent discovery of cheat-driven cycles in Pseudomonas (
www.cell.com/current-biol...
- amazing example of the tragedy of the commons! đź§Ş
#socialviruses
#evosky
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Phage–bacteria dynamics: The tragedy of the commons at hyperspeed
A recent study found that apparently stable coexistence between a clinically important pathogen, Pseudomonas aeruginosa, and its integrated prophages can break down, setting off an evolutionary cycle ...
https://www.cell.com/current-biology/abstract/S0960-9822(25)01402-2
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C. Brandon Ogbunu
19 days ago
On scientific "style" for
@undark.org
: "[Style] is a positive feature of science that facilitates different routes to solving problems.....We can embrace differences in our approaches while still promoting rigor and clarity."
undark.org/2025/12/04/o...
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Science Needs to Embrace the Idea of Style
How do individual scientists approach their work? These stylistic differences can influence the process of discovery.
https://undark.org/2025/12/04/opinion-science-style/
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Jesse Shapiro
Eva Heinz
21 days ago
New editor's spotlights to highlight some of the exciting work we see at
#MGen
, getting kicked off by
@bjesseshapiro.bsky.social
diving into the latest work from
@sylvainbrisse.bsky.social
et al 🔍 vaccine impacts on non-target species!
#MicroSky
#MicrobiomeSky
#IDSky
#MedSky
#evobio
#clinmicro
💻🧬 🧪
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Prof Jenny Rohn
21 days ago
And yet it seems that certain people long nostalgically for that pre-vaccine era
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Jesse Shapiro
Glen Dsouza
21 days ago
I am recruiting graduate students for Fall 2026! The Microbial Ecosystems Lab
@hot-mes-asu.bsky.social
at ASU studies microbial interactions, spatial ecology, and imaging-driven microbiome science. If you love microbes, microfluidics, or single-cell analysis, let’s talk!
www.microbialeco.systems
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