Rosen Lab

Dual Membrane-spanning Anti-Sigma 2 Controls OMV biogenesis and Colonization Fitness in Bacteroides thetaiotaomicron Bacteroides spp. are Gram-negative, gut commensals that shape the enteric landscape by producing outer membrane vesicles (OMVs) that degrade dietary fibers and traffic immunomodulatory biomolecules. U...

Happy to share the last pre-print from my lab. Just in time for Evan’s thesis defense

www.biorxiv.org/content/10.1...

Acinetobacter phages use distinct strategies to breach the capsule barrier Author summary Acinetobacter baumannii causes life-threatening and often antibiotic-resistant infections thereby posing a global threat. Accordingly, there is an urgent need for alternative treatments...

I said I will never work on phages, but having @micheleleroux.bsky.social next door made me change my mind. Here is Alexis's new paper showing how different phages deal with the capsular barrier to infect Acinetobacter! A great collaboration between our labs!
journals.plos.org/plospathogen...

So proud of Shantal!

CONGRATULATIONS to our grad student Shantal for PASSING her qualifying exam! 🍾 We are so proud of you and can't wait to see what you will accomplish next! This is Shantal thanking Malt for providing her emotional support throughout this process 🐶

Our very own Abass @abassoduola.bsky.social is trying his hand at sci comm on STEM TikTok 🫡 go show him some love!

We are also excited to welcome a new postdoc @jrlane2014.bsky.social to the Rosen Lab! We hope she likes Klebsiella pneumoniae as much as Streptococcus pneumoniae. Fun fact: Jessica has 2 cats named Teddy and Binx 🐈 🐈‍⬛

@kathrineoconnor.bsky.social

Welcome our new research assistant Katie to the Rosen Lab! 🤗 Fun fact: Katie has a cat named Timmy and is a dedicated plant mom 🐈 🪴

So proud of Dariana!

CONGRATULATIONS to our grad student Dariana for PASSING her qualifying exam! 🍾 We are so proud of you and can't wait to see what you will accomplish next!

📄 🧫 New review out today!

I hope that it is a helpful overview of the connections between the preterm gut microbiome and disease. It's the Schwartz lab's first review and summarizes our group's major focus

journals.asm.org/doi/epub/10....

#MicroSky #Microbiome

So proud of my first grad student @emilymarino178.bsky.social for knocking her F31 application out of the park. She’s well on her way to becoming an amazing scientist!

Thank you @davidaaronrosen.bsky.social for believing in my ideas and supporting this project!

@emilymarino178.bsky.social officially received the Notice of Award for her F31!!! 🍾 Congratulations, Emily! Time to propose this project and do that thesis 😉

Emily would like to thank her current and previous mentors for their support <3

@emilymarino178.bsky.social presenting her poster today at #ASMicrobe 2025!

Come see me at my poster today at #ASMicrobe from 10:30-11:30 and 4-5! I'll be at HMB-936 :)

So proud of my group sharing their Kleb knowledge today at the ID Research Symposium!

Nathan Lin and @emilymarino178.bsky.social presenting at WashU's 2025 ID Research Symposium today. This was a preview for the locals... stayed tuned for more Emily at ASM Microbe in Los Angeles! ☀️🌴

Klebsiella has met its match!

New lab pictures just dropped 👀📸 The Rosen Lab is ready to make Klebsiella walk the plank this summer 🏴‍☠️

Congratulations to our undergraduate student Nathan Lin for receiving a Fulbright research grant! Nathan will spend the next year studying the relationship between the gut microbiome and colorectal cancer at the Karolinska Institute in Sweden 🇸🇪 We're so proud!

Our staff scientist Paeton presenting her poster at the AAI conference! Great job, Paeton! Enjoy Hawaii, we miss you! 💉🌺 #aai2025

The Rosen Lab went to support our outstanding undergraduate student, Nathan Lin, who was selected to give a lightning talk at WashU's Spring Undergraduate Research Symposium! Great job, Nathan! We're proud of you!

No, she was really the brains...Congrats to @emilymarino178.bsky.social on her NSF Fellowship Honorable Mention. Way to represent the Rosen Lab. We're all so proud of you!