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Florencia Pratto

@florpratto.bsky.social
572 followers 955 following 18 posts

Tenure-track Stadtman Investigator at NIH/NIDDK. Studying meiotic replication and recombination while rolling those R's! Views are my own.

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Reposted by Florencia Pratto
Hajime Murakami @alhajijoker.bsky.social · 08/07/2026
Happy to share the first preprint from our lab, led by @arrosan.bsky.social, in collaboration with @ccb-lab.bsky.social. We identify a conserved cohesin-interacting motif in Red1 required for its recruitment, DSB formation, and Mek1 activation. www.biorxiv.org/content/10.6... #meiosis #recombination
biorxiv.org
Cohesin–axis interaction via a conserved Red1 motif promotes domain-specific DSB formation and Mek1 activation
Faithful chromosome segregation during meiosis I requires tight control of interhomolog recombination. In budding yeast, the meiotic chromosome axis, built on Rec8-containing cohesin together with Red...
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Reposted by Florencia Pratto
Piotr Ziolkowski @piotraz.bsky.social · 25/09/2025
Fantastic work coming out of Neil Hunter’s lab! www.nature.com/articles/s41...
nature.com
Protecting double Holliday junctions ensures crossing over during meiosis - Nature
Conditional ablation experiments show that key components of the synaptonemal complex protect double Holliday junction recombination intermediates to ensure their resolution into crossover products, which are required for accurate chromosome segregation during meiosis.
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Max Perutz Labs Vienna @maxperutzlabs.ac.at · 25/09/2025
Paper alert! 📢 How do cells strike the perfect balance during meiosis? ⚖️ A new study from the Matos lab in @natureportfolio.nature.com uncovers how Holliday junctions and the synaptonemal complex safeguard crossovers ➡️ tinyurl.com/2k4mmpzu @univie.ac.at @meduniwien.ac.at
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Adam Phillippy @aphillippy.bsky.social · 24/09/2025
🚂 The T2T train keeps rolling: "The formation and propagation of human Robertsonian chromosomes" with Gerton and Garrison labs is out! What's a Robertsonian chromosome? Let Jen tell you herself in this great video, or read our paper: [1/3] 📺 youtu.be/JmlY5omxQVc 📄 www.nature.com/articles/s41...
youtu.be
How Stowers Scientists Found the DNA Site Where Robertsonian Chromosomes Fuse
YouTube video by Stowers Institute for Medical Research
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Adam Phillippy @aphillippy.bsky.social · 22/09/2025
Delighted to finally announce a preprint describing the Q100 project! “A complete diploid human genome benchmark for personalized genomics” For which we finished HG002 to near-perfect accuracy: www.biorxiv.org/content/10.1... 🧵[1/14]
biorxiv.org
A complete diploid human genome benchmark for personalized genomics
Human genome resequencing typically involves mapping reads to a reference genome to call variants; however, this approach suffers from both technical and reference biases, leaving many duplicated and ...
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Reposted by Florencia Pratto
Aurele Piazza @aurelepiazza.bsky.social · 27/08/2025
Transcription and recombination are two universal DNA-dependent processes, but how they are coordinated remains largely unknown. Here we characterized transcription-recombination priority rules in yeast. 🧵 www.embopress.org/doi/full/10....
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Reposted by Florencia Pratto
Adam Phillippy @aphillippy.bsky.social · 09/04/2025
A project five years in the making, we've now published complete "T2T" genomes for six additional ape species! It turns out that finishing (and analyzing) six genomes is slightly more work than one... doi.org/10.1038/s415...
A phylogeny of the 7 ape genomes that have now been completed from "T2T", with Homer Simpson representing mankind.
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Florencia Pratto @florpratto.bsky.social · 09/04/2025
Check this out if you ever wondered what intercellular bridges might be doing during meiosis! Happy to have played a small role! Congrats!!! @thejainlab.bsky.social
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Ewan Birney @ewanbirney.bsky.social · 14/01/2025
This is an important shift - the long awaited new Ensembl web site is ready for beta testing - is smooth, scrollable genome loveliness +clean views of the complex information - but @ensembl.bsky.social needs your help to get all the use cases out. Come to the webinar, and check out beta.ensembl.org
beta.ensembl.org
Ensembl
The new website of the Ensembl project
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Reposted by Florencia Pratto
Kate Miroshnikova @katemiro.bsky.social · 08/01/2025
Excited to share the first paper from my lab 🤩 - a great collaboration with Dani Fachinetti lab - we discover a #mechanosensitive nuclear envelope #checkpoint that arrests cells directly post chromosome mis-segregation rdcu.be/d5AC9 👇🧵 #cancer #mechanics #p53 #chromatin
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Cohen Lab @Cornell @cohenlab.bsky.social · 01/01/2025
Happy new year to all! I am delighted to say that our new preprint went on @biorxiv-genetic.bsky.social today! The work was a labor of love for Mercedes Carro from my lab and Alexis Dzuibek from Andrew Grimson's lab - congrats to all! #meiosis #meiosis4eva #RNA biorxiv.org/cgi/content/...
biorxiv.org
Argonaute proteins regulate the timing of the spermatogenic transcriptional program
Argonaute proteins are best known for their role in microRNA-mediated post-transcriptional gene silencing. Here, we show that AGO3 and AGO4, but not AGO2, localize to the sex chromatin of pachytene sp...
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Florencia Pratto @florpratto.bsky.social · 31/12/2024
Home sweet home... New Year in the summer! #puntadeleste #uruguay
View of the Playa Mansa in Punta del Este, crystal clear water with Isla Gorriti in the background
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Reposted by Florencia Pratto
John Weir @jweir.bsky.social · 22/12/2024
New preprint! How does meiosis work in non-model organisms? Together with Susana Coelho at the MPI for Biology Tübingen @mpi-bio-fml.bsky.social , we took a look at the proteins of the meiotic axis in the brown alga Ectocarpus www.biorxiv.org/content/10.1...
biorxiv.org
Exploring Meiosis in Brown Algae: Meiotic Axis Proteins in the model brown alga Ectocarpus
Most extant eukaryotic systems share core meiosis-specific genes, suggesting meiosis evolved only once in the last eukaryotic common ancestor (LECA). These genes have been characterized as master regu...
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Florencia Pratto @florpratto.bsky.social · 30/11/2024
Uff Botafogo! 1 player down, 2 goals up! #CopaLibertadores
Pic of the game showing Botafogo up by two goals, playing with 10 players since minute 1
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Takashi Akera Lab @takashiakeralab.bsky.social · 16/11/2024
2024 Mid-Atlantic Meiosis Mini-Symposium!! 🐭🪱🪰🧬🦠Co-organized with @scienceleah.bsky.social and @florpratto.bsky.social at NIH. Amazing talks from trainees and new PIs🎉 #meiosis4eva
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Javier Santoyo @jsantoyo.bsky.social · 13/11/2024
Crossover recombination between homologous chromosomes in meiosis: recent progress and remaining mysteries. #CrossoverRecombination #Chromosomes #Meiosis #TrendsInGenetics www.cell.com/trends/genet...
cell.com
Crossover recombination between homologous chromosomes in meiosis: recent progress and remaining mysteries
Crossing over between homologous chromosomes in meiosis is essential in most eukaryotes to produce gametes with the correct ploidy. Meiotic crossovers are typically evenly spaced, with each homolog pa...
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Reposted by Florencia Pratto
Marc Somssich @somssich.bsky.social · 05/11/2024
The Chromosome Biology Department of @raphmercier.bsky.social here at the Max Planck Institute for Plant Breeding Research Cologne (@maxplanck.bsky.social) is looking for a new group leader! jobs.mpipz.mpg.de/jobposting/8... #PlantScience #PlantSciJobs #GroupLeader #NewPI #PlantChromosomalBiology
jobs.mpipz.mpg.de
Group Leader Position in Plant Chromosome Biology (m/f/d)
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Reposted by Florencia Pratto
Tobias Lenz @biotobi.bsky.social · 29/10/2024
Fantastic resource for bio icons: NIH Bioart Source Build figures, presentations, and illustrations with 2,000+ science and medical art visuals. This collection of high-quality, scientifically accurate vectors, #icons, and brushes is freely available within the public domain. bioart.niaid.nih.gov
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Compound Interest | Chemistry infographics @compoundchem.com · 21/10/2024
It's #InternationalNachoDay! This graphic on kitchen chemistry hacks in @cenmag.bsky.social features tips on making a creamy nacho sauce as well as a guac that doesn't brown: cen.acs.org/food/food-sc...
Infographic detailing the chemistry behind four kitchen chemistry hacks. The first is slowing fruit browning. Fruits brown due to oxidation and polymerization of phenols. Adding acids, such as lemon juice, wrapping fruit in cling film or otherwise blocking oxygen slows browning, reducing the activity of the polyphenol oxidase enzyme. 
You can brown onions more quickly by increasing the pH with baking soda, deprotonating amines so they react with sugars faster.  
Onions make your eyes water when chopped due to the production of propanethial S-oxide. A sharp knife damages onion cells less, reducing eye-watering reactions. Chilling onions before chopping reduces the rate of the reaction and the volatility of propanethial S-oxide.
Warming cheese, water, milk, and sodium citrate makes a stable, smooth cheese sauce. Sodium ions replace calcium ions that hold casein proteins in cheese together. This allows the casein proteins to separate and act as emulsifiers, binding fat and water together
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Reposted by Florencia Pratto
Elena Shekhova @lumipie.com · 17/10/2024
🧪What a beautiful work has just been published. This study reveals the mechanisms behind egg release during ovulation. Looking at those images and videos is like visiting a museum. Pure art! 🔗 www.nature.com/articles/s41...
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Florencia Pratto @florpratto.bsky.social · 19/10/2024
Picaña al gancho! Not many grilling days left this year...
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Reposted by Florencia Pratto
Rebecca Sear @rebeccasear.bsky.social · 03/10/2024
“I quickly learned most undergraduates in my classes still hold the pre-Lewontin belief that human genetic variation predominately sorts geographically. Many students also thought race was based in genetic differences & that single mutations could explain complex traits in humans”
sapiens.org
People Are Not Peas—Why Genetics Education Needs an Overhaul
The dated genetics taught in U.S. schools stokes misconceptions about race and human diversity. A biological anthropologist calls for change.
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Reposted by Florencia Pratto
Jonathan Pritchard @jkpritch.bsky.social · 23/09/2024
Two new chapters from my free online book in human genetics out this weekend! These complete Part 3 of the book, on human population structure and history: 3.3: Human prehistory [separate thread] 3.4: Ancient DNA: a genetic time capsule [this thread] web.stanford.edu/group/pritch...
web.stanford.edu
An Owner's Guide to the Human Genome
An Owner's Guide to the Human Genome
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Reposted by Florencia Pratto
Molly Przeworski @mollyprz.bsky.social · 28/09/2024
The final program for the conference is now up: events.columbia.edu/cal/event/ev...
events.columbia.edu
Frontiers in Human Genetics Conference
<p>The Symposium will showcase transformative, fundamental research in Human Genetics for a broad audience of biologists and biomedical researchers. To this end, we bring together an interdisciplinary...
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Florencia Pratto @florpratto.bsky.social · 17/09/2024
So cool!
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bioRxivpreprint @biorxivpreprint.bsky.social · 06/08/2024
A familial, telomere-to-telomere reference for human de novo mutation and recombination from a four-generation pedigree www.biorxiv.org/content/10.1101/202…
biorxiv.org
A familial, telomere-to-telomere reference for human de novo mutation and recombination from a four-generation pedigree https://www.biorxiv.org/content/10.1101/2024.08.05.606142v1
Using five complementary short- and long-read sequencing technologies, we phased and assembled >95%
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Reposted by Florencia Pratto
bioRxivpreprint @biorxivpreprint.bsky.social · 08/07/2024
Insights into non-crossover recombination from long-read sperm sequencing www.biorxiv.org/content/10.1101/202…
biorxiv.org
Insights into non-crossover recombination from long-read sperm sequencing https://www.biorxiv.org/content/10.1101/2024.07.05.602249v1
Meiotic recombination is a fundamental process that generates genetic diversity by creating new comb
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Reposted by Florencia Pratto
bioRxiv Evolutionary Biology @biorxiv-evobio.bsky.social · 06/07/2024
Insights into gene conversion and crossing-over processes from long-read sequencing of human, chimpanzee and gorilla testes and sperm www.biorxiv.org/content/10.1101/202…
biorxiv.org
Insights into gene conversion and crossing-over processes from long-read sequencing of human, chimpanzee and gorilla testes and sperm https://www.biorxiv.org/content/10.1101/2024.07.05.601967v1
Homologous recombination rearranges genetic information during meiosis to generate new combinations
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Adam Phillippy @aphillippy.bsky.social · 27/03/2024
Join the T2T consortium next Thursday, Apr 4, 12-4pm EDT for a webinar focused on the wet side of ultra-long read sequencing. We will have a half-day of seminars from top experts in the field sharing their advice plus a Q&A. Free and open to all. Register here: ucsc-seqtech-events.online
ucsc-seqtech-events.online
T2T Nanopore Ultra-Long Workshop |
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Florencia Pratto @florpratto.bsky.social · 20/03/2024
One of the perks of being at NIH! Peak blossom 🌸🌸!
Picture of a cherry blossom at the NIH campus, with building 1 in the background
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Florencia Pratto @florpratto.bsky.social · 08/03/2024
Don't miss it if you are at TAGC!
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Marc de Manuel @marcdemanuel.bsky.social · 23/02/2024
A thread about how meiotic recombination is directed to the genome in vertebrates, discovered by studying corn snakes. Work with @choge.bsky.social, @mollyprz.bsky.social, and co-authors: 1/n
science.org
Patterns of recombination in snakes reveal a tug-of-war between PRDM9 and promoter-like features
Evidence from the corn snake suggests that PR domain zinc finger protein 9 may not act alone to specify recombination hotspots in all species.
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Florencia Pratto @florpratto.bsky.social · 06/02/2024
Bringing some meiosis to the genomic technologists big stage! :)
Picture showing the stage of the AGBT 2024 meeting, next to my spot as the upcoming presenter
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Florencia Pratto @florpratto.bsky.social · 31/01/2024
Putting reading glasses on...
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Florencia Pratto @florpratto.bsky.social · 25/12/2023
Happy Summer Christmas! Feeling bad for the sweaty Santas...
Punta del Este, Uruguay, view from the harbor - beautiful summer day with blue skies
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Florencia Pratto @florpratto.bsky.social · 28/11/2023
Most of my favorite proteins in a single paper!
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bioRxivpreprint @biorxivpreprint.bsky.social · 11/11/2023
Distinct and interdependent functions of three RING proteins regulate recombination during mammalian meiosis www.biorxiv.org/content/10.1101/202…
biorxiv.org
Distinct and interdependent functions of three RING proteins regulate recombination during mammalian meiosis https://www.biorxiv.org/content/10.1101/2023.11.07.566091v1
Crossing-over between homologous chromosomes is essential for accurate segregation during meiosis. I
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Vincent J Lynch 🐘🦣🦥 🦇🐋🐢🐍 @devoevomed.bsky.social · 28/10/2023
Our latest preprint, in which we show that genes involved in testis and sperm function have been released from the constraints of purifying selection in gorillas coincident with the origins of polygyny (thread to soon follow)…
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Florencia Pratto @florpratto.bsky.social · 20/10/2023
A genome stability issue! to the To Be Read pile...🧪 www.cell.com/molecular-ce...
Cover of the Molecular Cell issue focused on genome stability - it shows an artistic representation of a broken DNA strand
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Florencia Pratto @florpratto.bsky.social · 19/10/2023
Great course, along with rafalab.dfci.harvard.edu/dslibro/ One of the few available resources in Spanish.
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