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).

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)

View of Dallas Hall and the lawn surrounding the rotunda. View of Dallas Hall from office with a sunset in the background

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

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!

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!

The Grass Foundation@grassfoundation.bsky.social · last mo.

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...

2026 Henry Grass Rising Stars in Neuroscience:
Daniel Cardozo Pinto, Maribel Patiño, and Whitney Stevens-Sostre

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!

Talk title: The population genomics of invasion: founder effects, chromosomal inversions, and selective sweeps shape the rapid evolution of invasive American shad (Alosa sapidissima)

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.

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bioRxivpreprint@biorxivpreprint.bsky.social · 2mo ago

Wolbachia-induced cytoplasmic incompatibility produces heritable chromatin modifications that suppress position-effect variegation https://www.biorxiv.org/content/10.64898/2026.06.12.731975v1