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Lori O'Brien

@llobrienlab.bsky.social
1.1K followers 1.1K following 81 posts

Dev bio, cell bio, stem cells, regen med, all things kidney. Punk rock and whisky enthusiast. Personal account and opinions. #firstgen

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Lori O'Brien @llobrienlab.bsky.social · 24/04/2026
For #FluorescenceFriday, an E10 embryo showing Pax2 localization. #DevelopmentalBiology
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Stephanie Gupton @stephgupton.bsky.social · 18/03/2026
Our first cancer biology preprint is up! TRIM9 switches melanoma cell phenotypes. First author @klukasik.bsky.social has taken the lab into new directions for sure in a fun collaboration with @coronin.bsky.social. We can't wait to hear what you think. www.biorxiv.org/content/10.6...
biorxiv.org
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Yarui Diao @yaruidiao.bsky.social · 20/02/2026
Happy to share scHiCAR, an ultra-high throughout (millions of cells), low cost (5 cents/cell including NGS), and trimodal platform for integrated single-cell level analysis of mRNA, open chromatin, and 5-kb resolution looping with ground-truth data the same individual cell.
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I-75 Scientist @flscitriguy.bsky.social · 14/02/2026
A blue Tulip (Sustentacular cell) behind some red (OMP) OSN cell bodies, and some green horizontal basal cells in the olfactory epithelium. Stylized for a science art presentation (easier to find than original).
Fluorescence imaging of the olfactory epithelium. A sustentacular cell transduced by a BFP expressing AAV stands out from all the red labeld olfactory sensory neurons. Random imaging was one of the best parts of the job...
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Lori O'Brien @llobrienlab.bsky.social · 13/02/2026
An old favorite for this #FluorescenceFriday. This "rose" is actually a kidney glomerulus (red, podocytes) and an axon reaching towards it (green).
Kidney microscopy image that looks just like a rose. The glomerulus is red and looks like a ball of petals and a green axon looks like a long stem.
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Lori O'Brien @llobrienlab.bsky.social · 09/02/2026
When your cat is obsessed with #PuppyBowl. As a special needs adoptee herself, she’s a huge advocate.
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Tim Mosca (he/him) @drosophilosophy.bsky.social · 07/02/2026
I am very excited to visit NC State this weekend and give a seminar on Monday! I'll be in Raleigh from Saturday to Tuesday so I'm joyfully accepting all running trail suggestions, dining ideas, cool places to sit and write 6 R01s, and any friends who want to say Hi! gga.ncsu.edu/event/tim-mo...
gga.ncsu.edu
Tim Mosca, Thomas Jefferson University
Office of University Interdisciplinary Programs
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Lori O'Brien @llobrienlab.bsky.social · 06/02/2026
The beauty of the kidney arterial tree for this #FluorescenceFriday. Evans Blue dye labels the vasculature. Image courtesy of postdoc Sarah McLarnon.
Microscopy image of a kidney only showing the highly branched arterial tree in magenta against a black background.
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Kevin Dean @kevin-dean.bsky.social · 05/02/2026
In @elife.bsky.social: A high-resolution, easy-to-build light-sheet microscope for subcellular imaging doi.org/10.7554/eLif...
doi.org
A high-resolution, easy-to-build light-sheet microscope for subcellular imaging
An accessible light-sheet microscope delivers subcellular-resolution, multicolor volumetric, and live-cell imaging, lowering barriers to state-of-the-art performance.
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Mark Peifer (He, him) @peiferlabunc.bsky.social · 11/01/2026
Great things still happen all around us. Each your UNC Biology's Bob Goldstein and Art's Beth Grabowski co-teach ARTS/BIOL 409, that brings together artists and scientists to explore an intersection of two disciplines. It culminated this year with a remarkable show Friday 1/n
Announcement of the show and a view of last year's crowd
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Lori O'Brien @llobrienlab.bsky.social · 09/01/2026
Pro tip: NEVER log into My NCBI with more than one 3rd party option. It creates a whole new account that can’t be deleted. I apparently did this once with the ORCiD login (as opposed to normal eRA login) and now I can’t link my ORCiD ID to my SciENcv. I have to ask the Help Desk to merge accounts. 🫠
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Kevin Dean @kevin-dean.bsky.social · 02/01/2026
Introducing Cyclically Multiplexed Expansion Microscopy (Cy-ExM): a workflow for 3D nanoscale, high-plex imaging in whole cells. Cryo-preserved ultrastructure + iterative labeling + expansion microscopy → 20 targets in one dataset with ~70 nm lateral resolution. www.biorxiv.org/content/10.6...
biorxiv.org
Unraveling Subcellular Ultrastructure with Cyclically Multiplexed Expansion Microscopy
Despite advances in fluorescence microscopy, spectral overlap and limited resolution hinder the dense mapping of the cellular ultrastructure. To overcome these challenges, we developed Cy-ExM, a high-...
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Lori O'Brien @llobrienlab.bsky.social · 31/12/2025
It’s certainly been a year, but I’m incredibly grateful that earlier in 2025 I was promoted to Associate Professor with tenure! Huge thanks to you all for promoting our work here and on the other site, for talk invites, for writing letters of support, and to the lab for all their contributions. 🥂
Image of a developing kidney collecting duct system in yellow with innervating nerve fibers in cyan. Image of a sectioned ganglion with many colors highlighting the cell bodies and nuclei.Image of a developing kidney showing nephron progenitors in yellow and collecting duct system in blue.
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Emily Bruce @brucelab.bsky.social · 19/12/2025
Unfortunately the drop in ESI funding rates is not paired with changes in funding required to get tenure. It’s not just the next three years of our labs at risk, but the rest of our careers. We are also the cohort that started in the COVID pandemic- it’s been nothing but “unprecedented times”…
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Ali Maximilian Erturk @erturklab.bsky.social · 18/12/2025
Most transcriptomics studies sample ~0.001% of a mouse. Which region do we choose? Often: we guess. Meet DISCO-seq 🤗 flipping the order: RNA-preserving clearing → whole-organ/whole-body 3D imaging → pick ROIs in 3D → unbiased scRNA-seq. Preprint: www.biorxiv.org/content/10.6...
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Mark Peifer (He, him) @peiferlabunc.bsky.social · 14/12/2025
In a paper out this month in @jcb.org we present evidence implicating intrinsically disordered regions (IDRs) as key to junctional assembly and function 2/n 🧪 pubmed.ncbi.nlm.nih.gov/41099653/
title, authors and abstract from link
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Ryan Gray @slewzeus.bsky.social · 13/12/2025
Our new work Cilia.io is out on the Rxiv. Ece Atayeter and Jason Ho trained an ML computer vision transformer for detection and quantification of cilia morphology and dynamics. We will provide a GUI soon. Another great collaboration w/ @jbwallingford.bsky.social
cili.io
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Josh Currie @joshcurrie.bsky.social · 05/12/2025
🚨 Preprint Friday! 🚨 Thrilled to highlight this collab with David Brown at Duke @cutitoutdave.bsky.social and Ken Poss at UW Madison/Morgridge @kenposs.bsky.social. By comparing 3(!!) regenerating models we identify a conserved role for Sp-family TFs in appendage regeneration (and more).....🧵
biorxiv.org
Enhancer-directed gene delivery for digit regeneration based on conserved epidermal factors
Limb loss remains a significant clinical challenge, but regenerative medicine approaches such as gene therapy offer a promising strategy to trigger endogenous regeneration programs. Optimal vector con...
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Adam Gracz @graczlab.bsky.social · 19/11/2025
UNC's Center for Molecular Medicine has up to three open-rank positions for faculty conducting research with relevance to gene therapy, including: novel iPSC and animal models of disease and basic cell biology. Join us in beautiful Chapel Hill! Deadline 1/31/26: unc.peopleadmin.com/postings/309...
unc.peopleadmin.com
Open-Rank, Tenure-Track Faculty Positions, Center for Molecular Medicine
The Center for Molecular Medicine in partnership with Departments of Biochemistry and Biophysics, Cell Biology and Physiology, Genetics, Microbiology and Immunology and Pediatrics at the University of...
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Lori O'Brien @llobrienlab.bsky.social · 07/11/2025
Flashback #FluorescenceFriday to some of the first light-sheet imaging we were doing. Video shows the collecting duct system of the developing kidney labeled with a pan-cytokeratin antibody. Courtesy of former talented technician Deanna Hardesty.
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ASNKidney @asnkidney.bsky.social · 16/10/2025
🆕 KidneyCure is committing up to $6 million over three years to help eligible NIH R01 applicants ranked in the top 15% continue their kidney research with a $100K award. Learn more and explore every KidneyCure opportunity: bit.ly/kcgrantsfunding
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Reto Fiolka @retof.bsky.social · 06/10/2025
We present multi-immersion Oblique Plane microscope (miOPM), a light-sheet platform that can be adapted to a wide range of applications, from sensitive live cell imaging to imaging organs and cleared tissues. www.biorxiv.org/content/10.1...
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Lori O'Brien @llobrienlab.bsky.social · 04/10/2025
Sharing this excellent review now out from postdoc Sarah McLarnon! Lots of useful info on 3D imaging, quantification of imaging data, and how this has been applied to the kidney. And since it's #FluorescenceFriday, sharing a figure with our own imaging data! www.sciencedirect.com/science/arti...
Figure from our review paper showing various fluorescence microscopy images of cells and structures of the kidney
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Rachael Ott @rachaelott.bsky.social · 03/10/2025
For #FluorescenceFriday, RhoA (blue) and the actin cytoskeleton (magenta) are shown in a set of primary microglia 🔬 #Neuroscience #Microscopy
RhoA (blue) and the actin cytoskeleton (magenta) are shown in a set of primary microglia.
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Maik Bischoff @maikbischoff.bsky.social · 03/10/2025
My entry for today’s #FluorescenceFriday: a pupal #Drosophila testis with muscles expressing 🔵 lifeact & 🔴 RFP-nls Honored & grateful to receive an honorable mention at @healthcare.nikon.com Nikon Small World 🌍🔬✨ 🔗 www.nikonsmallworld.com/galleries/20... #NikonSmallWorld #Microscopy #ScienceArt
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Lori O'Brien @llobrienlab.bsky.social · 26/09/2025
For this #FluorescenceFriday, a gorgeous image of an adult mouse kidney labeled with AQP2 and alpha SMA antibodies. AQP2 (green) marks the collecting duct and distal connecting segment while SMA marks the arterial tree. Courtesy of talented postdoc Sarah McLarnon.
Image of a fluorescently labeled adult mouse kidney showing AQP2 staining of collecting ducts and connecting segment in green and alpha SMA staining of the arterial tree in magenta. The collecting ducts look like squiggly branches.
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Lori O'Brien @llobrienlab.bsky.social · 26/09/2025
Rescued these two beauties today, one stuck in the parking garage stairwell and one from inside the house (and rescued from 3 very interested cats)
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Waggoner Lab @labwaggoner.bsky.social · 25/09/2025
Sensory neurons drive pancreatic cancer progression through glutamatergic neuron-cancer pseudo-synapses @cp-cancercell.bsky.social www.cell.com/cancer-cell/...
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Lori O'Brien @llobrienlab.bsky.social · 09/09/2025
This is me, one of those 211. My A1 R01 renewal would have been funded otherwise, and I was even initially told they planned to fund it. Now very unlikely. No more chances with this one. We had so many good things going-how do we keep moving forward? A question many of us will be asking.
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Dagmar Iber & CoBi @iberd.bsky.social · 30/07/2025
How can cells self-organize rapidly into complex patterns during development? Let’s explore a powerful and underappreciated mechanism: Directed Cell Migration (DCM). Preprint @biorxivpreprint.bsky.social : doi.org/10.1101/2025... 👇Thread 🧵(1/11)
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Lori O'Brien @llobrienlab.bsky.social · 29/07/2025
Intermediate mesoderm isn't the sole contributor to nephrons in zebrafish-new manuscript out showing somites are a source of nephron progenitors! Very cool, dogma challenging study led by Alan Davidson's group. Many fun discussions were had-grateful for the inclusion! www.nature.com/articles/s41...
nature.com
Somites are a source of nephron progenitors in zebrafish - Nature Communications
This study reveals that cells of the zebrafish kidney can originate from the somites, structures traditionally held as precursors to the skeletal muscle, challenging a century-old paradigm and prompti...
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Don Moynihan @donmoyn.bsky.social · 28/07/2025
New, from an anonymous NIH insider: Trump is being pushed to spend more NIH money. The White House is ordering NIH to do multi-year budgets for awards. This budget trick means fewer awards, fewer labs funded, and lower paylines for researchers. 🧵 donmoynihan.substack.com/p/alert-the-...
donmoynihan.substack.com
Alert: The Trump administration is quietly slashing new NIH grant awards, and it's not via the budget
NIH’s sudden move to multiyear grant funding is forcing shocking cuts in the number of grants funded. This is an effective budget cut. It's bad, folks.
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BWJones @bwjones.bsky.social · 28/07/2025
The NIH was healthiest when pay lines were in the 20th percentile range. We are headed into an environment where pay lines are in the 5% range. In my entire career, I’ve only had 3 grants that scored better than 5%. And my lab is considered a successful one. This is going to destroy science.
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Uri Manor @manorlaboratory.bsky.social · 24/07/2025
A beautiful tour through an AAV-PHP.B-GFP-transduced intact cochlea as visualized via lightsheet microscopy after tissue clearing. Magenta is a hair cell marker, yellow is a neuron marker, and green is AAV-GFP (relatively low hair cell transduction rate in this specific sample).
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Lori O'Brien @llobrienlab.bsky.social · 12/07/2025
#FluorescenceFriday! Thanks BPoD!
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Lori O'Brien @llobrienlab.bsky.social · 02/07/2025
Surprise catch while surf fishing! No baby sharks harmed, was safely released back into the ocean. 🦈
Baby Atlantic sharpnose shark after being reeled in and still on the hook Close up picture of a juvenile sharpnose shark
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Lori O'Brien @llobrienlab.bsky.social · 20/06/2025
For #FluorescenceFriday I'm sharing the fantastic work of postdoc Sarah McLarnon! A follow up to our '23 Development paper where we asked: Does precise vascular patterning matter for function and what happens after ischemic injury? The results were surprising! journals.physiology.org/doi/full/10....
Image captured by a light-sheet microscope showing the arterial tree of an adult mouse kidney in magenta
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Lori O'Brien @llobrienlab.bsky.social · 18/05/2025
Evening visitor to the feeder showing off the ruby throat 😍
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Lori O'Brien @llobrienlab.bsky.social · 30/04/2025
Check out the latest from Alan Davidson’s lab (of zf kidney regeneration fame) showing somites contribute to making nephrons in zebrafish. GESTALT, Cre lineage tracing, and zf somite transplants 😱. Love a good story that challenges dogma. Great discussions were had! www.biorxiv.org/content/10.1...
biorxiv.org
Somites are a source of nephron progenitors in zebrafish
For over a century it has been believed that the vertebrate kidney arises exclusively from the intermediate mesoderm. Here, we overturn this paradigm by demonstrating that some nephrons, the functiona...
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ABC 10News @abc10news.bsky.social · 14/04/2025
WATCH: Elephants at the San Diego Zoo Safari Park react to Monday's 5.2 magnitude earthquake that shook San Diego County. The elephants formed an "alert circle" meant to protect the young and the entire herd from any threats, according to the San Diego Zoo Wildlife Alliance.
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Ryan Gray @slewzeus.bsky.social · 09/04/2025
Finally out! Brittney Voigt et al show the shared role of Inppl1a expansion of notochord vacuolated cells and also for hypertrophy of chondorcytes and bone lengthening. @currentbiology.bsky.social www.cell.com/current-biol...
cell.com
Cell expansion for notochord mechanics and endochondral bone lengthening in zebrafish depends on the 5′-inositol phosphatase Inppl1a
Voigt et al. show that the 5′-inositol phosphatase gene inppl1a drives notochord expansion independent of vacuole fusion. Defects in notochord expansion are exacerbated by locomotion, causing more sev...
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Vincent Ledvina @vincentledvina.bsky.social · 23/03/2025
20 minutes ago here in Venetie, Alaska, the skies erupted in a beautiful auroral substorm. Here is just one of many real-time videos I recorded during the show to give you a sense of how fast and dynamic the aurora can move.
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Jon Rauch @jonrauch.bsky.social · 20/03/2025
A friend drove two hours today for her breast cancer chemotherapy only to learn it was canceled due to NIH cuts. Clinical trial ended midstream. No treatment, no restart, no plan, no information. Her bro-in-law's chemo was also canceled.
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c0nc0rdance @c0nc0rdance.bsky.social · 06/03/2025
When you've been in the cell culture hood all day and finally get to take off your gloves:
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Evan Zeitler @littlebiggloms.bsky.social · 04/03/2025
Exciting work from the UNC Kidney Center this week: pubmed.ncbi.nlm.nih.gov/40020049/. Posting because we don't have an official account here (yet), but some excellent folks in our lab discovered important steps in the mechanism by which hydrANCAzine causes...well.. ANCA! #NephSky #MedSky 🧵
pubmed.ncbi.nlm.nih.gov
Sequential carbonyl derivatives and hydrazone adduct formation on myeloperoxidase contribute to development of ANCA-vasculitis - PubMed
Drug-induced autoimmune diseases are increasingly recognized although mechanistic insight into disease causation is lacking. Hydralazine exposure has been linked to autoimmune diseases, including anti...
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Cell Biology and Physiology at UNC-CH @unc-cbp.bsky.social · 27/02/2025
Congrats to @llobrienlab.bsky.social on winning an Innovative Science Accelerator Award from @isackuh.bsky.social! She pioneered whole tissue 3D imaging of #kidney nerves. Now she will map changes in these nerves from acute injury to chronic disease for the first time! med.unc.edu/cellbiophysi...
med.unc.edu
Lori O’Brien receives an Innovative Science Accelerator Award - Department of Cell Biology and Physiology
O’Brien will map the kidney nerve network from acute injury to chronic disease for the first time in a high-risk/high reward project. Sympathetic and sensory neurons innervate the kidney, with sympath...
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Florian Jug @florianjug.bsky.social · 11/02/2025
🔬🎤 As pre-announced a few days ago... please let us proudly present to you: 𝑴𝒊𝒄𝒓𝒐𝕊𝒑𝒍𝒊𝒕 - your ticket to imaging more, imaging more gentle, and/or imaging more efficient. 🔬 doi.org/10.1101/2025... Like ❤️, repost 🔂, and most importantly... please send feedback ✉️ our way! 🙏
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Justin Bollinger @bollinger.bsky.social · 16/02/2025
I am actively looking for a research scientist position or research administration role within the Raleigh-Durham (RDU) area! Please reach out if my background and skillset might fit your labs needs :-) Lots of experience with preclinical models, translational neuroscience, and behavioral analyses!
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Center for Advanced Pain Studies @utdpaincenter.bsky.social · 15/02/2025
🎉 Happy Valentine's Day, we love you science! ❤️ #FluorescenceFriday #sciart #neuroart
Image is a heart shaped Dorsal Root Ganglion. Sensory neurons (magenta), astrocytes (cyan), nuclei (blue).
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Josh Currie @joshcurrie.bsky.social · 15/02/2025
Brainbow marks cells in red Others in blue Tracked over time Reveals lineage true #ScienceValentines
Brainbow multi-color fluorescent reporter in salamander tissue
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