Alex Pollen
@brainevodevo.bsky.social
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Studying specializations and vulnerabilities of human brain development
reposted by
Alex Pollen
Enard/Hellmann Lab
about 1 month ago
We’re excited to host
@nkschaefer.bsky.social
from the Pollen Lab
@brainevodevo.bsky.social
, UCSF! He’ll present Cellbouncer, a new bioinformatic tool for pooled single-cell processing that yields insights into hominid evolution 🧬 More about the lab 👉
www.pollenlab.org
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reposted by
Alex Pollen
Carl T. Bergstrom
5 months ago
"Sources said the administration is specifically considering a full termination of federal grant funding for the University of California and California State University systems." Pure vandalism. This could never happen in a country with functioning checks and balances.
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Trump preparing large-scale cancellation of federal funding for California, sources say | CNN Politics
The Trump administration is preparing to cancel a large swath of federal funding to California, an effort which could begin as soon as Friday, according to multiple sources.
https://www.cnn.com/2025/06/06/politics/trump-california-federal-funding
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reposted by
Alex Pollen
Pierre Vanderhaeghen
7 months ago
EMBOMtg Paris May 6-9
@aydoganlab.bsky.social
@jamesbriscoe.bsky.social
@brunetlab.bsky.social
@ebisuyamiki.bsky.social
@mwdorr.bsky.social
@beyerlab.bsky.social
@franckp.bsky.social
@janereznick.bsky.social
@olmedo-lab.bsky.social
@perez-carrasco.bsky.social
meetings.embo.org/event/25-dev...
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Developmental timing across species: From mechanisms to evolutionary insights
Like choreography, development consists of a highly ordered suite of steps and transitions. Modifying developmental tempo can affect final size and composition of tissues, as well as their plasticity…
https://meetings.embo.org/event/25-dev-timing
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Congratulations to Nathan for conceiving and designing this unified demultiplexing toolkit!
add a skeleton here at some point
7 months ago
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We put CellBouncer to the test with a challenging demultiplexing problem of assigning 24 hominid tetraploid composite cell lines generated by Bryan Pavlovic to both individuals-of-origin and identifying the mitochondrial haplotypes present.
www.biorxiv.org/content/10.1...
7 months ago
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Introducing CellBouncer, a unified demultiplexing toolkit built by
nkschaefer.bsky.social
to check IDs and keep the riff raff out of single cell genomics datasets, including by using genetic variation as an external ground-truth for ambient RNA removal:
www.biorxiv.org/content/10.1...
7 months ago
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reposted by
Alex Pollen
Cedric Boeckx
7 months ago
Excellent preprint by
@bhadurilab.bsky.social
, offering a metabolic atlas of the early human cortex, & revealing how shifts in metabolic processes regulate cell fate transitions. Very valuable resource to address evolutionary questions 🧪🧠🧫
www.biorxiv.org/content/10.1...
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Metabolic Atlas of Early Human Cortex Identifies Regulators of Cell Fate Transitions
Characterization of cell type emergence during human cortical development, which enables unique human cognition, has focused primarily on anatomical and transcriptional characterizations. Metabolic pr...
https://www.biorxiv.org/content/10.1101/2025.03.10.642470v1
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reposted by
Alex Pollen
Eric Topol
8 months ago
Francis Collins, the NIH Director for 12 years, led the Human Genome Project and other NIH efforts for 32 years, resigned today. Key words from his resignation letter
www.nytimes.com/2025/03/01/u...
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reposted by
Alex Pollen
BWJones
8 months ago
By
@katherinejwu.com
"The NIH... supported 99 percent of the drugs approved in the U.S. from 2010 to 2019. The agency has had a hand in “nearly all of our major medical breakthroughs over the past several decades,” The NIH is in a struggle for its (and our) lives. This is existential to America:
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Inside the Collapse at NIH
Administration officials pressured NIH to avoid clear advice from the agency’s own lawyers to restart grant funding now.
https://www.theatlantic.com/health/archive/2025/02/nih-grant-freeze-biomedical-research/681853/?gift=4OW_ksNtOXRAREHU203IjoAlHi07ZXTNu8mcd9VAsTg&utm_source=copy-link&utm_medium=social&utm_campaign=share
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reposted by
Alex Pollen
Megan Dennis
9 months ago
Check out our new preprint describing CiFi - a method that couples 3C and PacBio HiFi sequencing with low input requirements. We apply it to human GM12878 to better characterize chromatin across repetitive regions, as well as single insect samples (a mosquito and a Mediterranean fruit fly).
add a skeleton here at some point
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Pleasure to co-edit this issue of Current Opinion on human genetic origins with
@steinlab.bsky.social
:
www.sciencedirect.com/special-issu...
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Current Opinion in Genetics & Development | Genetics of Human Origin (2024) | ScienceDirect.com by ElsevierScienceDirect
Identification of the genetic variants underlying distinctive human traits provides a new perspective on human origins. However, complete descriptions of genetic variants under selective pressure alon...
https://www.sciencedirect.com/special-issue/10D4V1W2WLX
8 months ago
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reposted by
Alex Pollen
Jasmine Loveland
8 months ago
A new story about our recent paper came out today in the Science section of Forbes! Check it out!
www.forbes.com/sites/grrlsc...
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Super Enzyme Regulates Testosterone Levels In Male Ruffs
A single gene in the shorebird species known as ruffs controls the levels of testosterone in males, and this in turn affects their appearance and mating strategies.
https://www.forbes.com/sites/grrlscientist/2025/02/14/super-enzyme-regulates-testosterone-levels-in-male-ruffs/
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reposted by
Alex Pollen
Cedric Boeckx
9 months ago
New preprint 📣! Excited to share the result of several years of work, led by
@ellylewerissa.bsky.social
&
@olivieroleonardi.bsky.social
, in collaboration with friends
@naelnadifkasri-lab.bsky.social
& Giuseppe Testa. On CHD2, a chromatin remodeller, its role in evolution & development [🧵] 🧪🧠🧫🧬
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reposted by
Alex Pollen
Cedric Boeckx
11 months ago
First post on this platform 👋. Glad to reconnect with old friends, and also learn from new contacts. Will post about intersecting themes: human evolution, genetics (esp. aDNA), neuroscience & cognition. Currently focusing on brain organoids and early developmental changes that may have had an impact
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reposted by
Alex Pollen
Debby Silver
11 months ago
Happy to be on Bluesky! Our lab is fascinated by how the brain develops, how this goes awry in disease, and this is co-opted in evolution. A major focus is dynamic spatial and temporal
#RNA
control in the developing brain. Please see our new review on evolution!
www.sciencedirect.com/science/arti...
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How our brains are built: emerging approaches to understand human-specific features
Understanding what makes us uniquely human is a long-standing question permeating fields from genomics, neuroscience, and developmental biology to med…
https://www.sciencedirect.com/science/article/pii/S0959437X24001278?dgcid=author
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reposted by
Alex Pollen
Cedric Boeckx
11 months ago
1st preprint recommendation here (proud
@biorxivpreprint.bsky.social
affiliate):
@brainevodevo.bsky.social
& his team do great, creative work and I like their phylogeny-in-a-dish approach to examine gene regulatory evolution. Here they focus on dopaminergic neurons
www.biorxiv.org/content/10.1...
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Interspecies Organoids Reveal Human-Specific Molecular Features of Dopaminergic Neuron Development and Vulnerability
The disproportionate expansion of telencephalic structures during human evolution involved tradeoffs that imposed greater connectivity and metabolic demands on midbrain dopaminergic neurons. Despite t...
https://www.biorxiv.org/content/10.1101/2024.11.14.623592v1
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reposted by
Alex Pollen
Hani Goodarzi
11 months ago
Check out this awesome paper!
add a skeleton here at some point
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@jenellewallace.bsky.social
led a preview of two outstanding papers from the labs of Cecile Charrier, Pierre Vanderhaeghen, and
@franckp.bsky.social
that connect regulation of the tempo of synaptogenesis by the human-specific gene SRGAP2C to ASD-linked genes:
authors.elsevier.com/a/1k3583BtfH...
11 months ago
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Building on our recent review, Tyler Fair performed CRISPRi-based genetic screens to assign human-specific deletions to molecular and cellular phenotypes:
www.biorxiv.org/content/10.1...
almost 2 years ago
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I learned so much from writing this review led by
@jenellewallace.bsky.social
. Protracted neuronal maturation is a hallmark feature of human cortex with unknown origins. We are excited that many groups are now making the mechanisms of species differences in timing experimentally tractable:
add a skeleton here at some point
almost 2 years ago
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