Cilia alert! Last year Juyeon Hong described a new domain in 9+2 cilia called the EDT, the extreme distal tip. Now, she's found a new protein required for its assembly, but only in non-mammalian vertebrates. A cool evo-cell / protein evolution story in @cellreports.bsky.social tinyurl.com/2xvdskx6
Peiwei Chen
@peiwei-chen.bsky.social
HHMI Hanna Gray Fellow & Postdoc with Andy Clark and Cedric Feschotte at Cornell | selfish genetic element, transposon, small RNA, evolution peiweichen.com
Officially recruiting postdocs at GW. If you are interested in genetic novelty, structural variation, or evo genetics please get in touch! We have data sets on mulitple organisms with large population sizes (Drosophila, Megalonaias nervosa) and species in decline (fireflies, mussels, elephants).
Does anyone know of a good updated figure likes this showing the correlation between transposons and genome size? No taxa preference. @transposableman.bsky.social?
Not super up to date on these things, it's not uncommon to see this plotted in studies looking at a small number of species eg. www.nature.com/articles/s41... www.sciencedirect.com/science/arti... link.springer.com/article/10.1... www.cell.com/iscience/ful... www.nature.com/articles/s41...
I am excited to announce that I have opened my own lab at SMU in Dallas, Texas! We are studying questions surrounding how our environment shapes social interactions across lifespan using aggression across sexes in Drosophila as a model. (Photos are of SMU's Dallas Hall and the view from my office)
Our study published today @science.org shows that X-chromosome inactivation (XCI) attracts L1 mutations to the human X chromosome: doi.org/10.1126/scie... With outstanding Perspective from @aurelien-doucet.bsky.social & @retrogenomics.bsky.social: doi.org/10.1126/scie...
Meet three of our #Dros27 plenary speakers! 🧠 Vanessa Auld 🪰 @nabroderick.bsy.social 🧬 Don Fox From glial biology to host-microbe interactions to genome stability and regeneration, they'll bring exciting science to Philadelphia. 🔗https://buff.ly/7IBPyFM
Getting excited for #Dros27? Meet our keynote speaker, @perrimonlab.bsky.social! His pioneering work has transformed Drosophila genetics and advanced discoveries in development, physiology, and signal transduction. See the full lineup: buff.ly/FB1mYrf
How do transposons jump when they’re released from host control? I babysat two chromosomes for 2 years, making sure they are ok without most piRNAs. Here’s what we found & excited to share my 1st postdoc paper: “piRNA loss unleashes episodic transposition bursts” www.biorxiv.org/content/10.6...
piRNA loss unleashes episodic transposition bursts
In Metazoa, transposon expression is suppressed by the piRNA pathway, and disruption of this pathway leads to rampant transposon expression. However, it remains unclear whether increased transposon ex...
biorxiv.org
For me this paper is a career highlight..truly astonishing biology! www.nature.com/articles/s41...
A queen odour mediates reproductive suppression in a eusocial mammal - Nature
Naked mole-rat (Heterocephalus glaber) queens produce isopropyl myristate, a low-volatility ester that high-ranking animals detect and avoid, which alters prolactin and progesterone in other females t...
nature.com
Hey team - it’s looking very likely that I’ll be hiring not one but two four year postdocs! We’re a fun lab with tons of theoretical and applied pop gen projects - broadly in polyploid, conservation, and human evo. Competitive salary, sunny San Diego! Do share with your about to defend grads!
Regulated apoptosis is a conserved mechanism pausing female reproduction and establishes the sterile worker caste in the eusocial wasp, Polistes https://www.biorxiv.org/content/10.64898/2026.07.07.732837v1
A conserved architectural domain shapes centromere evolution in Drosophila https://www.biorxiv.org/content/10.64898/2026.06.30.735607v1
Excellent and super interesting talk by @aruizherrera.bsky.social to kick off #meoiticrecombination symposium 🧬👏👉 #smbe2026 #recombination #3Dchromatian #crossover
I’m at #SMBE2026 this week. My lab is looking to hire a postdoc to study the genetic and developmental mechanisms underlying the evolution of organs and cell types. Please reach out if you’re interested!
We named three newly identified genes as boundary-associated factors! www.science.org/doi/10.1126/...
I am honored to receive the 2026 Henry Grass Rising Stars in Neuroscience Award from The Grass Foundation! 🌟 Immense gratitude to my mentors Dr. Hoon & Dr. Robertson, and the Trustees for investing in an inclusive scientific community. Excited for my future lab: bridging ion channels and vision!
Congratulations to the 2026 Henry Grass Rising Stars in Neuroscience Awardees: Daniel Cardozo Pinto, Maribel Patiño, and Whitney Stevens-Sostre! @dcardozopinto.bsky.social @maribel-patino.bsky.social @stevenssostre.bsky.social Learn more: grassfoundation.org/2026-henry-g...
Delighted to receive the Henry Grass Rising Star in Neuroscience Award! 🎉 A huge thank you to the Grass Foundation for their recognition and support
Congratulations to the 2026 Henry Grass Rising Stars in Neuroscience Awardees: Daniel Cardozo Pinto, Maribel Patiño, and Whitney Stevens-Sostre! @dcardozopinto.bsky.social @maribel-patino.bsky.social @stevenssostre.bsky.social Learn more: grassfoundation.org/2026-henry-g...
I'm presenting tomorrow (6/22) at #Evol2026 in the Molecular Ecology III session (2:45 PM in Room 21)! Come by to learn about invasions, inversions, rapid evolution, selective sweeps, and fish on trains 🐟 🚂 I'm also on the market for 2027 postdocs, so happy to chat opportunities/fit!
Excited to share this preprint!! with @brandonscooper.bsky.social and Bill Sullivan We tested whether endosymbiotic Wolbachia can alter host gene expression through chromatin modifications that persist from spermatogenesis to adulthood.
Wolbachia-induced cytoplasmic incompatibility produces heritable chromatin modifications that suppress position-effect variegation https://www.biorxiv.org/content/10.64898/2026.06.12.731975v1
a small attempt to capture this enormous loss and what Greg meant and means to so many. www.cell.com/cell/fulltex...
Gregory J. Hannon (1964–2026)
Gregory J. Hannon passed away in April 2026 at the age of 61. A towering figure in modern molecular biology, Greg influenced remarkably diverse areas of science. His work reshaped our understanding of...
cell.com
Nearly a year after our symposium on Repeat-Induced Point (RIP) mutations, I’m happy to share the fruit of some of our discussions. The fungal RIP hypermutator mechanism has deep eukaryotic roots www.sciencedirect.com/science/arti... We hope to spark interest in this underappreciated mechanism.
There is remarkable insight into a remarkable scientist in this obituary for Greg Hannon. www.cell.com/cell/fulltex...
Gregory J. Hannon (1964–2026)
Gregory J. Hannon passed away in April 2026 at the age of 61. A towering figure in modern molecular biology, Greg influenced remarkably diverse areas of science. His work reshaped our understanding of...
cell.com
This was a great honor! Thanks so much to my trainees @rothenberglab.bsky.social for the nomination and the @uiowabiology.bsky.social for the award.
Congratulations to Assistant Professor of Biology Katy Rothenberg (@krothphd.bsky.social) for receiving a 2026 Biology Exceptional Service Award! 👏 Learn more about the award here: biology.uiowa.edu/news/2026/05...
"The fungal RIP hypermutator mechanism has deep eukaryotic roots" by Thomas Badet & colleagues authors.elsevier.com/sd/article/S...
Check out our paper on the neo-sex chromosomes in mountain pine beetle! We assembled THREE neo-Ys that are quite distinct and their corresponding neo-Xs .
The tortured past of young polymorphic sex chromosomes revealed through multiple de novo genome assemblies of the mountain pine beetle https://www.biorxiv.org/content/10.64898/2026.01.27.702068v1
Tetramerization and RNA-guided filament assembly control Schlafen-Argonaute antiphage defense https://www.biorxiv.org/content/10.64898/2026.05.29.728809v1
had a blast visiting the Molecular Biosciences department at UT Austin and meeting fellow postdocs across the US - so much cool science and so many discoveries! 🙌