Xantha Karp reposted
Please comment on "Request for Information (RFI) on Proposed Changes to Reporting Outcomes from NIH Peer Review" by Tuesday (October 13th, 2026). rfi.grants.nih.gov?s=6a2b1c22c3... Here is my comment: 1/6
Xantha Karp
@xanthakarp.bsky.social
C. elegans geneticist, how diapause affects development, microRNA, equity in STEM, professor at Central Michigan University, she/her/hers. https://karplab.org https://orcid.org/0000-0001-6602-5583
1.6K followers3.2K following98 posts
Xantha Karp reposted
Please comment on "Request for Information (RFI) on Proposed Changes to Reporting Outcomes from NIH Peer Review" by Tuesday (October 13th, 2026). rfi.grants.nih.gov?s=6a2b1c22c3... Here is my comment: 1/6
Xantha Karp reposted
Xantha Karp reposted
Xantha Karp reposted
The CCT chaperonin is a context-dependent regulator of RNA-binding protein phase transitions #micropublication #biology #data #caltechlibrary #Celegans #PhenotypeData #NewFinding https://micropublication.org/journals/biology/micropub-biology-002420
Xantha Karp reposted
Tim Bestor has left us. This obituary captures him well — you always had to be at your intellectual peak with him, while his trainees always spoke highly of their experiences. He made a massive contribution to epigenetics, a giant in our field. www.genetics.cuimc.columbia.edu/news/memoria...
Xantha Karp reposted
Very excited to put out this new preprint from the lab that represents our 3rd paper now in the lab's move into the field of identifying bioactive molecules in bacteria using C. elegans and studying how they regulate animal physiology. Really excited about this space- www.biorxiv.org/content/10.6...
Xantha Karp reposted
Call for Volunteers: C. elegans Managing Editors for microPublication Biology micropublication.org/news/0f62741...
Xantha Karp reposted
🪱 A behavior analysis in #Celegans highlights that the change in reproductive strategies to increase mating following dauer diapause requires sexually dimorphic changes in behavior. Find out more in #G3journal 🔗 buff.ly/Zgi3QXQ
Xantha Karp reposted
Xantha Karp reposted
Structural biology postdoctoral position open in my lab--apply now! For more information about the lab, see www.umassmed.edu/munsonlab/. Interested candidates should apply through the University of Massachusetts Chan Medical School jobs portal (www.ummsjobs.com/job/11668/).
Xantha Karp reposted
RNA-binding proteins (RBPs) often bind numerous transcripts - but do they act through a network effect? Our new paper in @plosbiology.org shows that the highly conserved LIN28 RBP controls developmental timing in C. elegans larvae through only two targets. doi.org/10.1371/jour... 1/n
Xantha Karp reposted
How can a tiny worm shape a scientific career? Join 2026 GSA Mentorship Award recipient @irinakitop.bsky.social of @fredhutch.org on August 20 at 1:00 p.m. EDT as she shares how C. elegans has guided discoveries, collaborations, and approaches to mentorship. 🔗https://buff.ly/iUmQCCQ
How do developmental pathways adjust when harsh environments cause delays or interruptions in development? 🧪🧬 C. elegans can enter the stress-resistant and developmentally arrested dauer diapause stage. Progenitor cells actively maintain multipotency during dauer. 🧵
FOXO/DAF-16 modulates the transcription factor ROR/NHR-23 and inhibits the let-7 microRNA to maintain multipotency during dauer https://www.biorxiv.org/content/10.64898/2026.07.18.739353v1
In this latest preprint, we found that DAF-16 blocks adult cell fate by indirectly repressing the let-7 microRNA, which promotes differentiation in worms and mammals. DAF-16 regulates let-7 via the NHR-23 nuclear hormone receptor. www.biorxiv.org/content/10.6...
How do developmental pathways adjust when harsh environments cause delays or interruptions in development? 🧪🧬 C. elegans can enter the stress-resistant and developmentally arrested dauer diapause stage. Progenitor cells actively maintain multipotency during dauer. 🧵
FOXO/DAF-16 modulates the transcription factor ROR/NHR-23 and inhibits the let-7 microRNA to maintain multipotency during dauer https://www.biorxiv.org/content/10.64898/2026.07.18.739353v1
The DAF-16/FOXO transcription factor promotes diapause and stress resistance across species. Our prior work showed that DAF-16 blocks adult cell fate in seam cells, a stem cell model. journals.plos.org/plosgenetics...
Xantha Karp reposted
Excited to share that in mid-August I'll be opening the Castillo–Quan Laboratory (CORA Lab) as a tenure-track Assistant Professor at Ohio University! We study stress responses, homeostasis & healthy aging in C. elegans. Recruiting two PhD students for Aug 2027. Join us @ohiouniversity.bsky.social!
Xantha Karp reposted
Job opportunity for a #postdoc in the Updike Lab: The Dustin Updike Lab at MDI Bio Lab uses #Celegans to investigate gene function in the germline, with a particular focus on epigenetic mechanisms that maintain germ cell identity. Apply: https://ow.ly/Mg6i50Zl5rN #sciencejobs #STEMjobs #postdocjob
Xantha Karp reposted
🪱 A new mutant analysis reveals the functions of miRNA-producing small RNA pathway in #Celegans male fertility, sperm production, and gonad morphology. Learn more in #G3journal 🔗 buff.ly/Sc8hDzk
Xantha Karp reposted
First paper from the Kasimatis Lab is now online! We investigate of the maintenance of mate plugging in C. elegans along with its function www.biorxiv.org/content/10.6...
Xantha Karp reposted
Xantha Karp reposted
For #Celegans researchers: want to capture better worm images? Our new paper explains how light scatters from the worm body and reveals practical strategies for improving imaging quality. Check out our new paper in iScience @cp-iscience.bsky.social: www.cell.com/iscience/ful...
Xantha Karp reposted
This is the biggest threat to American science thus far, and that says a lot, I wrote--the template makes it easy to personalize. 🧪
OK, people. It takes 2 minutes to write a letter to Congress, a few extra if you personalize it. Russ Vought's attempt to take over ALL federal grant funding is anti-democratic and dangerous. We need MORE letters. Let's tip it over 2000 today. actionnetwork.org/letters/oppo...
Xantha Karp reposted
Best time to start Standing Up for Science was years ago. Second best time is NOW. 📣Leave public comment ☎️Contact Congress 🚨Register for the @standupforscience.net Emergency Science Meeting tomorrow at 4pm et ONE STOP SHOP: fight2win.standupforscience.net
Xantha Karp reposted
'If a control experiment fails, does that mean that the entire experiment is poorly designed and you must restart from scratch? Often, yes— but not always. I present five examples where failed control experiments triggered entirely new fields of research.' link.springer.com/article/10.1...
Xantha Karp reposted
Replying to @jessicacalarco.com
🚨The OMB rule will be the end of science as we know it. MARK YOU CALENDAR for the @standupforscience.net EMERGENCY SCIENCE MEETING June 2nd, 4pm et. We will be giving an overview & assigning EVERY SCIENTIST IN AMERICA their marching orders. REGISTER: events.standupforscience.net/stand-up-for...
Xantha Karp reposted
Xantha Karp reposted
👉️ Are you an undergraduate student interested in genetics? 👉 Do you want to learn how to read a research paper properly? 🪱 Read the #WormBase article in the May issue of #GENETICS, which provides a step-wise guide on understanding a #Celegans study. 🔗 buff.ly/fUkhQum
Xantha Karp reposted
Xantha Karp reposted
Download our updated database of postdoc fellowships from different foundations and agencies. We identified 275 fellowships. For each entry, we provide description of the fellowship, focus, amount, deadline, eligibility, etc. Download this database here: research.jhu.edu/rdt/funding-...
Xantha Karp reposted
The Karp lab had a fantastic day at the Midwest C. elegans meeting last week with 6 undergrads and 3 grad students presenting. Thanks to @nickburton.bsky.social and the other organizers for all their work. It’s such a pleasure to get together and talk about science.
Xantha Karp reposted
Normally non-toxic bacteria, when induced to produce the bioplastic PHB, kill C. elegans! PHB has been in the microbiology text books for over a century — in this new study I co-authored with Gabrielle Giese in the Walhout lab we show this bioplastic is also relevant for host-microbe interactions!
Some #bacteria polymerize excess carbon into polyhydroxybutyrate (PHB), a biodegradable storage polymer. This study shows that #PHB -producing bacteria kill #Celegans nematodes by disrupting pharyngeal & intestinal function @plosbiology.org 🧪 plos.io/4cFAwDz
Xantha Karp reposted
⚒️ NEW TOOLBOX for #Celegans researchers 🪱 Theresa Gibney and Ariel Pani developed a method that allows for a standardized workflow to generate N-terminal and internal tags in any background and without the need for genetic balancers. Paper in #GENETICS:🔗 buff.ly/wXMml3x
Xantha Karp reposted
It’s great to see our latest microPublication go live! Four undergraduate researchers worked with grad student Kat Yamamoto to demonstrate a correlation between fat storage and survival of #Celegans on pathogenic bacteria! Congrats Alan, Grace, Tiffany, and Daniel! #undergradinthelab #proudPI
Suppression of the fat storage defect of C. elegans dbl-1/BMP signaling mutants correlates with improved survival on a bacterial pathogen #micropublication #biology #data #caltechlibrary #Celegans #Ph https://micropublication.org/journals/biology/micropub-biology-002067