Katrina Velle
@katrinavelle.bsky.social
Assistant Professor @ UMass Dartmouth. Interested in actin, amoebae, microscopy, and sciart. she/her katrinavelle.wixsite.com/science
Our Dept of Microbiology & Immunology @Geisel School of Medicine @Dartmouth has an opening for an Assistant Professor. Looking for programs bridging multiple areas in Micro & Immuno. A great place to be! Programs: www.M2P2.org www.dartmouthbiofilm.org Job ad: apply.interfolio.com/187637
The Onishi lab produced its first PhD. Congratulations Dr. Samed Delic! You can read some of his thesis work here: pubmed.ncbi.nlm.nih.gov/38994454/ pubmed.ncbi.nlm.nih.gov/41959007/
Maybe I should have submitted a grant about using amoebae to clean reflecting pools…
1 week to start🔥 New @focalplane.bsky.social webinar series focused on #CellMigration, register & join us▶️, it will be fun! pls spread the word, in the next one, ECRs could apply to show their work ;) ▶️ to register: focalplane.biologists.com/2026/05/29/n... @dgz.bsky.social @the-node.bsky.social
1/10 For decades, cellular aggregation was considered an evolutionary dead end. Cells could come together temporarily. But complex multicellular organisms like animals? Our study, led by JP Gerdt, with Ruibao & @jennahed.bsky.social suggests it may be time to rethink that🧵 #ProtistsOnSKy
(1/11) Excited to share the brand-new cell division preprint from the lab! In this manuscript, chemical biology (in a collaboration with @rnett42.bsky.social Ryan’s lab) meets the cell biology (our lab). Harmala alkaloids regulate cell division planes in plants www.biorxiv.org/content/10.6...
After a long hiatus, happy #MicroscopyMonday! Here are some amoebae squeezing themselves into narrow channels (part of a video for our preprint pubmed.ncbi.nlm.nih.gov/41377514/). Sound effects by Dillon (my 4 month old who may have had a little to do with the bluesky hiatus!)
Find the latest version of SuperPlotsOfData here: uva-nl.shinyapps.io/SuperPlotsOf... It supports multi-file upload and now has the option to jitter the large dots (mean of median of replicates) No jitter Jitter
ECRs – apply by 12 June for a funded place at our Workshop on Rethinking Cell Differentiation and Development: A Unicellular Perspective, organised by Elena Casacuberta & James Gahan @jgahan.bsky.social Find out more at biologists.com/workshops/de... #BiologistsWorkshops
Got to play around with Holotomographic imaging of muscle cells yesterday via the @uclastemcell.bsky.social imaging core and the results are pretty spectacular 🤩 You can see everything from mitochrondria to lamellipodia to macropinocytosis…with no labels!
For no reason at all, here is a picture of my dog on a ferry last summer
These responses are wild. Academic research is reading papers and building your work based on what you've read in other people's published articles. How are they getting trained in academia without knowing the basics of research?
Dr. Holly Walters@manigarm.bsky.social · 3mo agoI'm sorry, what? In writing my first monograph, I spent six weeks trying to track down a citation in TWO languages I didn't know. And good thing too, because the citation was wrong. That's scholarship. That's research. You know, the thing we're trained to do?!?
Microbial eukaryotes keep challenging assumptions about eukaryotic cell and genome biology. Our upcoming workshop explores the frontier of protist genomics and how it shapes cell biology, ecology and evolution. Please save the date! Talks, posters and ECR events Websites and details coming soon
Are you interested in cytoskeleton and looking for a postdoc position? I will be advertising positions in the new year but happy to chat in person if you are attending ASCB @ascbiology.bsky.social in Philadelphia. Just drop me a line.
Just under a month left—apply by December 5 through the link on my website!
Katrina Velle@katrinavelle.bsky.social · 10mo agoPhD or Master's position available for Fall 2026! Interested in how actin drives cell crawling, eating, dividing, or osmoregulation? What about pathogenesis of a brain-eating amoeba? Or eukaryotic evolution? If so, apply through my website: katrinavelle.wixsite.com/science/cont... Please share!
🚨Our collaboration with @centriolelab.bsky.social & @gautamdey.bsky.social is out today in @cp-cell.bsky.social We show that #Expansion #Microscopy is a broad-spectrum modality for Euks, enabling 3D phenotypic maps rooted to phylogeny. #ProtistsOnSky #SciComm #SciSky www.cell.com/cell/fulltex...
Very excited that my final postdoctoral work is now online in Cell @cellpress.bsky.social. www.sciencedirect.com/science/arti... Using 16 (!) cryo-EM structures, we uncovered how the three proteins coronin, cofilin and AIP1 work together to rapidly disassemble actin filaments.
Incredible video, incredible work. This is a huge step forward in understanding both actin severing, and more broadly, how actin binding proteins change filament architecture and thus drive re-modeling 🧪
Wout Oosterheert@woutoosterheert.bsky.social · 10mo agoVery excited that my final postdoctoral work is now online in Cell @cellpress.bsky.social. www.sciencedirect.com/science/arti... Using 16 (!) cryo-EM structures, we uncovered how the three proteins coronin, cofilin and AIP1 work together to rapidly disassemble actin filaments.
PhD or Master's position available for Fall 2026! Interested in how actin drives cell crawling, eating, dividing, or osmoregulation? What about pathogenesis of a brain-eating amoeba? Or eukaryotic evolution? If so, apply through my website: katrinavelle.wixsite.com/science/cont... Please share!
🚨 TLM Online Seminar Series - 08.10.25 | 16:00 UK Pablo Sáez: "Decision-making during cell migration" Please repost & to attend online please register to our 📧for the zoom link: lists.cam.ac.uk/sympa/subscr...
If anyone ever wants to brush up on a lot of cell migration concepts don't forget we have several wonderful scientists who have given talks previously in cell migration seminars. I find it so comforting to go look at old videos, maybe someone else who will do as well!! youtube.com/@cellmigrati...
Cell Migration Seminars
Cell Migration Seminars every Tuesday at 16:00 BST.
youtube.com
And now for something completely different @tianyang22.bsky.social & #YanCao uncover of how SPIN90 dimers activate Arp2/3 to nucleate bidirectional linear actin filaments. Great collaboration with @romet-jegou-lab.bsky.social & @carolynmoores1.bsky.social #Cryo-EM #Arp2/3 rdcu.be/eGoH4
Arp2/3-mediated bidirectional actin assembly by SPIN90 dimers
Nature Structural & Molecular Biology - Liu et al. show that SPIN90 dimerizes and binds two Arp2/3 complexes to nucleate two bidirectional actin filaments and the dimerization domain is...
rdcu.be
”Please inhibit responsibly: Natural and synthetic actin toxins as useful tools in cell biology” I had a lot of fun going down different actin inhibitor rabbit holes with @onishilab.bsky.social on this perspective! www.molbiolcell.org/doi/10.1091/... www.molbiolcell.org/cms/10.1091/...
@fritzlaylin.bsky.social et al. propose a simple way to highlight both experimental #reproducibility & cell-to-cell variation, while avoiding pitfalls common in analysis of cell biology data rupress.org/jcb/article/... 📕 Reproducibility & Best Practices in Cell Biology: rupress.org/jcb/collecti...
📢📢Hiring 2 Research Assistants & 2 Postdocs at Emory University in Atlanta to study cytoskeletal biophysics/biochemistry. Please RT. RAs: great for recent bachelor's/master's in Physics/Bio/Chem/Biochem. Email CV and interests to shekhar@emory.edu. More info: www.shekharlab.org
Our latest preprint on the role of the Arp2/3 complex in mitotic entry is now available @biorxiv. This work was done by Dhanya Kalathil, a very talented postdoc in my lab. The story started in 2019 when we were investigating the role of branched actin in cytokinesis. 1/
Feeling mitochondrially challenged lately? Here are two classic reviews on #mitochondria that should help. www.cell.com/current-biol... www.cell.com/current-biol...
The Origin and Diversification of Mitochondria
Moving beyond the simplistic view of mitochondria as the power house of the cell, Roger et al. present the immense diversity of mitochondria and mitochondrial functions across eukaryotes, and bring th...
cell.com