Xantha Karp

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

We’re pleased to highlight Biochemistry Ph.D. candidate Robert Kinobe, recipient of a Seymour Fogel Endowment Travel Award, who presented his research on KFERQ-mediated protein degradation in C. elegans at the MAPSS + DevCell Joint Meeting. Congratulations to Robert and his colleagues!

Xantha Karp reposted

Are you looking for a postdoc exploring the cell biology of development, defining how cells change shape and move? Do you want to develop a research program & teaching skills preparing you for a position at a college or small University? Our new NIH grant will support those goals 1/n Please share

Xantha Karp reposted

Under pressure, the DOD just released the text of its secret 10-year agreement with the NIH. Here are the biggest revelations from the document 🧵

Xantha Karp reposted

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. 🧵

bioRxivpreprint@biorxivpreprint.bsky.social

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

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This work is part of our fantastic ongoing collaboration with John Kim’s lab at Johns Hopkins University, and involves many talented students, most notably first author Himani Galagali from the Kim lab (now a postdoc in the Ruvkun lab) and Matt Wirick from the Karp lab at Central Michigan Univ.

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. 🧵

bioRxivpreprint@biorxivpreprint.bsky.social

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

Xantha Karp reposted

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. 🧪

Gregg Gonsalves@gregggonsalves.bsky.social

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

'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...

link.springer.comThe controls that got out of control - EMBO ReportsEMBO Reports - When experimental controls go wrong, it does not necessarily mean your experiment is flawed. It might well be the first sign of something unexpected.

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...

events.standupforscience.netEmergency Science Meeting by Stand Up for Science[discussing OMB-2026-0034?]

Xantha Karp reposted

I heard from several sources yesterday that NIH is planning to release a Request for Information (RFI) that apparently will include this: Scores and percentiles for NIH grant applications will not be shared with applicants although they will be provided to NIH program officers and staff. 1/3

Xantha Karp reposted

Dearest shoalmates: Please consider posting a comment to the NIH regarding the Strategic Plan that includes reducing funding for animal research. Responses from the research community are currently greatly underrepresented compared w/ advocacy groups opposing animal experimentation. 🔗 below ⬇️ 1/2

Xantha Karp reposted

As one of the postdocs in my lab will be leaving to take a faculty position soon I will likely be placing a new ad in the coming week for someone with experience mapping C. elegans mutants from screens or doing bacterial genetics. If anyone knows/has candidates #Celegans #worms #bacteria #genetics

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!

PLOS Biology@plosbiology.org

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

microPublication Biology@micropub7n.bsky.social

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