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Ximena Garcia Arceo

@quexarce.bsky.social
134 followers 171 following 63 posts

Current postdoc in Wallace Marshall Lab at UCSF🦠 🌁 | PhD at UCSD Chemistry 🧪⛱️ | BS at UCSB Physics🔬 🌊 Hoping to stay in academia if science and education survive🤞🏻so I can think and talk about stochasticity, entropy and geometry in cells

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Reposted by Ximena Garcia Arceo
Osman Lab @osman-lab.bsky.social · 29/08/2026
🧬 New preprint from our lab! After years of work, we're excited to share our story: the pyruvate dehydrogenase complex (PDHc) — best known for feeding the TCA cycle — has a second, non-catalytic role supporting mitochondrial DNA gene expression in yeast.
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American Society for Cell Biology @ascbiology.bsky.social · 01/09/2026
Congratulations to Wallace Marshall of UCSF, recipient of the 2026 Keith R. Porter Lecture, honoring innovative leaders advancing our understanding of cell biology. www.ascb.org/society-news/ascb-anno…
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Ximena Garcia Arceo @quexarce.bsky.social · 13/08/2026
I now have TWO apps that are necessary for doing basic tasks on Microsoft Outlook, e.g. logging in and opening a PDF. This is beyond Kafkaesque. Demonic forces are at play here.
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Reposted by Ximena Garcia Arceo
Michael Hobbes @michaelhobbes.bsky.social · 10/08/2026
"Don't stay on twitter so long you stop believing in sunscreen" sounds like an idiom people 200 years in the future will be using but won't remember what it means
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Ximena Garcia Arceo @quexarce.bsky.social · 10/08/2026
As if we need more dogs from breeders in this world. This is an abominable use of gene-editing technology. Meanwhile there is great research into causes and treatments of allergies. Gene-edited beagles may offer a future option for people with dog allergies - ABC News share.google/Aac7bdAp3dyp...
share.google
Gene-edited beagles may offer a future option for people with dog allergies
Scientists at a biotech company have used gene editing to create two hypoallergenic beagles that don't trigger allergies
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Wallace Marshall @wallaceucsf.bsky.social · 05/08/2026
Congratulations everyone!
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Katie Mack @astrokatie.com · 31/07/2026
If this is what happens to a scientific field as a whole when LLMs dominate the workflows of researchers, I can only imagine that the outlook is even worse for any individual researcher who is soldiering on without using them. 😞
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Gladfelter Lab @gladfelterlab.bsky.social · 26/07/2026
You're probably already doing science advocacy — you just might not call it that. Our new commentary (www.nature.com/articles/s41...) makes the case that every scientist has a role, and that advocacy takes many forms. Find and embrace yours! @natcellbio.nature.com @vfarm15.bsky.social
nature.com
Every scientist has a role in advocacy - Nature Cell Biology
In this Comment, we call on scientists to share their stories. Through casual conversation or prepared presentations, with images or essays, scientists can advocate for their research and reach taxpay...
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Reposted by Ximena Garcia Arceo
Daniel Colón-Ramos @dacolon.bsky.social · 22/07/2026
AI is to a scientist what a calculator is to a mathematician. Basing the future of science on AI is as deep as basing the future of mathematics on calculators
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Alondra Nelson @alondra.bsky.social · 23/07/2026
The report “calls for the government to invest in young researchers, without noting that the administration fired scores of young scientists and terminated hundreds of grants to early career researchers.”
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ChiliDishGambino @chilidishgambino.bsky.social · 14/07/2026
Calling the RFK Jr diarrhea strain “MAHA Blast” since it has now evidently infiltrated Taco Bell
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David Roberts @volts.wtf · 25/06/2026
I remember when non-binding language suggestions from university HR departments were national news, subject to repeated outraged columns in multiple media outlets. Do you see any of that national outrage about this real, bona fide, state-enforced intimidation & censorship?
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Juan C. Landoni @jclandoni.bsky.social · 08/06/2026
Check out this amazing video by @julius-w.bsky.social (lead author) summarising our paper out this week! doi.org/10.1083/jcb....
doi.org
Asymmetric mitochondrial trafficking balances perinuclear biogenesis to maintain network morphology
Winter et al. use substrate micropatterning and photoactivation to define mitochondrial subpopulations in proliferative cells. They find that biased antero
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Reposted by Ximena Garcia Arceo
🇲🇽 Leonardo Collado-Torres @lcolladotor.bsky.social · 26/05/2026
Si conocen a mexicano/as 🇲🇽 en @jhu.edu (o afiliada/os) y/o profesionistas en Baltimore, avísenme. Organizo un grupo de WA de mexas en Balto que estoy buscando revivir. Voy a aprovechar que estoy organizando una fiesta con mariachis 🎺 🎤 y así intentar fomentar nuestra pequeña comunidad. ¡Gracias!
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Ben Larson @blarson.bsky.social · 19/05/2026
And now it's out! Happy that PNAS selected for the cover this SEM image snapped by @samjlord.bsky.social, one of the most evocative visualizations of Euplotes that I have ever encountered. www.pnas.org/doi/10.1073/... Stay tuned for what is shaping up to be some fascinating follow-up in the lab...
Scanning electron microscopy image of the ciliate Euplotes gigatrox on the cover of the journal PNAS. Distinct punk rock vibes
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Wallace Marshall @wallaceucsf.bsky.social · 14/05/2026
you've heard alot about how cells are or are not crowded at the molecular scale, but what about at the organelle scale? in her new preprint, @marymirvis.bsky.social develops a quantitative way to ask this question in budding yeast - see her thread below www.biorxiv.org/content/10.6...
biorxiv.org
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Mary Mirvis @marymirvis.bsky.social · 13/05/2026
2/13 A nice model system for this geometric question is budding yeast - simple rigid shape, easy to synchronize, and amenable to whole-cell imaging and reconstruction with high throughput.
whole-cell reconstruction of budding yeast Uchida et al 2011, Wei et al 2012, and Kichuk et al 2024
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Mary Mirvis @marymirvis.bsky.social · 13/05/2026
Link in the main post was cut off! www.biorxiv.org/content/10.6...
biorxiv.org
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Mary Mirvis @marymirvis.bsky.social · 13/05/2026
1/13 So excited to share our new preprint!! How do organelles pack together in a crowded cytoplasm? we know organelles interact via contact sites, but how does competition for space contribute to organelle morphology and interactions? @wallaceucsf.bsky.social www.biorxiv.org/content/10.6...
Images of packed cellular interiors from Maritan et al 2022 and Heinrich et al 2021.
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Will Ratcliff @wcratcliff.bsky.social · 13/05/2026
1/23 New preprint! Been thinking about the origin of cellular life. Specifically, how protocells (or *any* compartments) just aren't enough to support the evolution of increasingly complex cells. You gotta de-Darwinize the parts! The ribosome/genome do this. www.biorxiv.org/content/10.6...
biorxiv.org
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Maureen Barr @barrlab.bsky.social · 12/05/2026
POSTDOC OPPORTUNITY!!! The Rutgers IRACDA program is phenomenal: 70% of postdoctoral fellows land faculty positions. Martha Soto (LinkedIn below) is the amazing director and leader of this program. Please apply or reach out if you have questions. www.linkedin.com/posts/martha...
linkedin.com
INSPIRE is recruiting! Please share broadly with senior graduate students and beginning postdocs. INSPIRE, the NIH-funded Rutgers-IRACDA, offers postdoctoral training for individuals interested in… | ...
INSPIRE is recruiting! Please share broadly with senior graduate students and beginning postdocs. INSPIRE, the NIH-funded Rutgers-IRACDA, offers postdoctoral training for individuals interested in com...
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Wallace Marshall @wallaceucsf.bsky.social · 09/05/2026
reminds me of a t-shirt I designed in grad school for our dev bio program retreat, which said "Death, the final stage of development"
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Wallace Marshall @wallaceucsf.bsky.social · 08/05/2026
It’s starting to seem like changes in cell volume are turning up in many different cases of cell state transitions. Would be nice to collect examples.
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Juan C. Landoni @jclandoni.bsky.social · 24/04/2026
We're hiring! 🔬🏔️ Looking for curious, open-minded, and multidisciplinary #PhD candidates to research at the intersection of #mitochondria, #metabolism, #imaging & #physiology, with the #Alps as a backdrop. Sounds like you or someone you know? Link below! @fbm-unil.bsky.social @unil.bsky.social
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Azusa Kage @azusakage.bsky.social · 24/04/2026
Now published in @cytoskeljournal.bsky.social !🎉 Diurnal Regulation of Flagellar Length and Swimming Speed in the Red-Tide Raphidophyte Chattonella marina 🔗 doi.org/10.1002/cm.7... © 2026 Wiley #protistsonsky
doi.org
Diurnal Regulation of Flagellar Length and Swimming Speed in the Red‐Tide Raphidophyte Chattonella marina
The raphidophyte Chattonella marina is a harmful algal bloom (HAB) species known for its distinct diurnal vertical migration (DVM), a behavior important for its survival and bloom formation. However,...
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Deepa Rajan, PhD @deeparajan.bsky.social · 23/04/2026
How can a single cell learn without a brain? We explore this in my paper with @wallaceucsf.bsky.social! We discovered that single cells may learn using molecules similar to those that animal brains use to learn, like CaMKII. Cells can also propagate memory states to their progeny!
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Juan C. Landoni @jclandoni.bsky.social · 21/04/2026
The Landoni Lab opens this summer at UNIL! @fbm-unil.bsky.social 🔬 Quantitative #imaging + systems biology to decipher how #metabolic architecture & #mtDNA dynamically shape tissue development, #aging and #mitodisease. Beyond excited to fire up the lasers, open positions soon! 🧪 #mitochondria #newPI
Landoni lab & UNIL logos, featuring fluorescent images of mitochondria and nematodes
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Científico Latino @cientificolatino.com · 14/04/2026
Congratulations to our sixteen NSF-GRFP awardees and Honorable Mentions!!
Flyer of the 16 GSMI scholars and program alumni who received the NSF-GRFP Award or an Honorable Mention
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Alex Wenzel @alexwenzel.bsky.social · 14/04/2026
Terrible question phrasing.
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(GIRISH)MALI LAB @dyneinassembly.bsky.social · 07/04/2026
Normally, motile cilia beat vigorously on the cell surface, just like they do on our lung cells to keep us healthy.
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Ximena Garcia Arceo @quexarce.bsky.social · 08/04/2026
www.statnews.com/2026/04/07/b...
statnews.com
A star scientist showed that better genetics lessons could reduce racism. It was the death knell for his career
Brian Donovan had persuaded high school teachers and education researchers that prejudice might be ended by changing how genetics is taught.
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Matt Lycas @lycasworks.bsky.social · 03/04/2026
The longstanding mystery for how mitochondria segregate and position their DNA has been solved! Read all about it: www.science.org/doi/10.1126/... @jclandoni.bsky.social Here is Juan and I at the 4th of July parade at MBL physiology
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Beth Cimini 🔬💻📊 @bethcimini.bsky.social · 03/04/2026
This (along with the ethical reasons, and the environmental reasons, and the "if you have to push it on me that hard I automatically don't trust it" reasons) is a big part of why I don't use GenAI - I'm not done learning yet! I've still got things I want to **know** how they work.
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Juan C. Landoni @jclandoni.bsky.social · 03/04/2026
Our paper is now out in Science! Super excited to share our discovery that #mitochondria #pearling is the elusive mechanism driving the regular distribution and inheritance of #mtDNA nucleoids 🧬 [1/6]
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IFLScience @iflscience.com · 02/04/2026
“Why Did This Evolve? It Didn’t. It Was Already There” - @jclandoni.bsky.social 👉 www.iflscience.com/why-did-this...
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Janelia Conferences @janeliaconf.bsky.social · 02/04/2026
🚨 Deadline approaching (Apr 16)! Don’t miss your chance to join our student-led #TheoreticalBiophysics workshop. Meals, accommodation + reasonable travel covered for accepted participants. Apply ➡️ janelia.news/THB26 @allysonsgro.bsky.social @zamakany.bsky.social
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Carter Lab @carter-lab.bsky.social · 24/03/2026
Excited to share our work on the structure and function of cytoplasmic lattices within mouse embryos. A collaborative effort with @niakanlab.bsky.social and work led by @kashishsingh.bsky.social and @inaharasimov.bsky.social . It is now out on BioRxiv: www.biorxiv.org/content/10.6...
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Marine Biological Laboratory @mblscience.bsky.social · 23/03/2026
Today is the start of Impact Week, a week-long celebration of the people and philanthropy that power the MBL. Each day, we’re highlighting a different area of impact, beginning today with #research, the foundation of breakthroughs in Woods Hole. Donate: mbl.edu/give
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Marine Biological Laboratory @mblscience.bsky.social · 18/03/2026
Daniel Cortes, returning to the MBL this year as a Whitman Fellow, discovered a new, never-before-described species of Stentor. He and his colleagues named it Stentor stipatus. 🔗 Read about it here: go.mbl.edu/stentor
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Ewa Bomba-Warczak @ebomba.bsky.social · 13/03/2026
🚨 Our lab is hiring postdoctoral fellows in two different areas of research: (1) mitochondrial biology and (2) reproductive science. Postings are below, and you can visit bombawarczaklab.com to learn more about what we do! Repro: apply.interfolio.com/183045 Mito: apply.interfolio.com/183230
bombawarczaklab.com
Bomba Lab
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Gladfelter Lab @gladfelterlab.bsky.social · 08/03/2026
Condensates are powerful ways to break symmetry and cells do remarkable things with them. Here we show that in a multinucleate fungus, a condensate regulates translation of a cyclin and a formin in distinct locations. www.nature.com/articles/s41...
nature.com
RNA-specific local translation is patterned by condensates for multinucleate cell growth - Nature Cell Biology
Geisterfer, Jalihal et al. show spatially distinct effects of Whi3 condensates on target translation in Ashbya syncytia. In vitro, translation is enriched at condensate–solute interfaces but repressed...
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Jacquelyn Gill @jacquelyngill.bsky.social · 27/02/2026
The National Science Foundation is systematically being converted to the National AI and Quantum Research Foundation. “I see it as the administration exerting political control over what has traditionally been NSF’s ability to fund the best science.”
science.org
NSF officials break silence on how AI and quantum now drive agency grantmaking
Leaders acknowledge White House role in controversial moves
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Josef Uyeda @pseudacris.bsky.social · 26/02/2026
This post is about biologists' obligation to speak up for trans rights, in case I need to spell it out directly.
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Biophysical Society @biophysicalsoc.bsky.social · 25/02/2026
We're wrapping up at #bps2026! See you next year at #bps2027 in Philadelphia, February 20-24, 2027!
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Daniel Colón-Ramos @dacolon.bsky.social · 24/02/2026
Great thread, worth the read in its entirety
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Azusa Kage @azusakage.bsky.social · 20/02/2026
New preprint alert! 🦠🔬 We quantitatively evaluated the swimming and flagellar movement of Chattonella, a red-tide alga. Chattonella has two unequal flagella, and we found a positive correlation between anterior flagellum length and swimming speed. #protistonsky www.biorxiv.org/content/10.6...
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Ben Larson @blarson.bsky.social · 20/02/2026
Fun find in the free library at work: Greg's Microscope. Never knew this existed. Warms my heart to see some ciliates in a children's book. I forgive them for referring to protists as animals...
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Janelia Conferences @janeliaconf.bsky.social · 17/02/2026
Students & postdocs 👉 Apply by April 16 for our Theoretical Biophysics workshop. Topics include active matter, non-equilibrium thermodynamics, development, behavior, evolution + more. ✈️ Meals, hotel & reasonable travel covered 🔗 janelia.news/THB26 @allysonsgro.bsky.social @zamakany.bsky.social
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Chih-Hsuan (Sherry) Hsu @sherryhsu.bsky.social · 17/02/2026
Thrilled to share that the first part of my PhD work from @cohenlaboratory.bsky.social lab is now on bioRxiv! www.biorxiv.org/content/10.6... Check out the threads below:
biorxiv.org
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Sarah Cohen @cohenlaboratory.bsky.social · 16/02/2026
Does tubulin acetylation dictate organelle behavior? We used quantitative multispectral imaging to simultaneously profile 8 membrane-bound organelles and decipher how tubulin acetylation shapes organelle architecture and interaction networks during neuronal differentiation. 4/9
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