Ximena Garcia Arceo
@quexarce.bsky.social
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
🇲🇽🇲🇽🇲🇽
Hoping to stay in academia if science and education survive🤞🏻so I can think and talk about stochasticity, entropy and geometry in cells
Reposted by Ximena Garcia Arceo
1/5: New preprint: Cytokines control the physical state of immune tissue. www.biorxiv.org/content/10.1...
Unlike structured organs (heart, liver), immune tissue can shapeshift to form functional structures like germinal centers (GCs), tertiary lymphoid organs, granulomas, etc.
Unlike structured organs (heart, liver), immune tissue can shapeshift to form functional structures like germinal centers (GCs), tertiary lymphoid organs, granulomas, etc.
Cytokines control the physical state of immune tissue
Unlike most solid-like tissues, immune tissue is protean and reconfigurable—its component cells can patrol vast territories, find rare cellular partners, and dynamically self-organize into functional ...
www.biorxiv.org
November 18, 2025 at 9:31 PM
1/5: New preprint: Cytokines control the physical state of immune tissue. www.biorxiv.org/content/10.1...
Unlike structured organs (heart, liver), immune tissue can shapeshift to form functional structures like germinal centers (GCs), tertiary lymphoid organs, granulomas, etc.
Unlike structured organs (heart, liver), immune tissue can shapeshift to form functional structures like germinal centers (GCs), tertiary lymphoid organs, granulomas, etc.
Reposted by Ximena Garcia Arceo
‼️ TOMORROW is the travel application deadline for our upcoming workshop, Expanding the Palette of Mathematics in Biology!
Join us as we bring together mathematicians and biologists not traditionally associated with "mathematical biology" to explore our work from a new perspective
Application 🔗 ⬇️
Join us as we bring together mathematicians and biologists not traditionally associated with "mathematical biology" to explore our work from a new perspective
Application 🔗 ⬇️
November 19, 2025 at 4:31 PM
‼️ TOMORROW is the travel application deadline for our upcoming workshop, Expanding the Palette of Mathematics in Biology!
Join us as we bring together mathematicians and biologists not traditionally associated with "mathematical biology" to explore our work from a new perspective
Application 🔗 ⬇️
Join us as we bring together mathematicians and biologists not traditionally associated with "mathematical biology" to explore our work from a new perspective
Application 🔗 ⬇️
Unrelated but the night sky put on a show during my flight back to San Francisco
November 19, 2025 at 5:17 AM
Unrelated but the night sky put on a show during my flight back to San Francisco
Had an amazing time visiting University of Richmond during peak foliage, learned about the innovative teaching and science we'd see more of around the country, and shared my own stochastic biophysics work, old and new. Thank you @omqu.bsky.social for my first ever dept seminar & campus visit
November 19, 2025 at 5:13 AM
Had an amazing time visiting University of Richmond during peak foliage, learned about the innovative teaching and science we'd see more of around the country, and shared my own stochastic biophysics work, old and new. Thank you @omqu.bsky.social for my first ever dept seminar & campus visit
Reposted by Ximena Garcia Arceo
🧪A must watch.
This is why #NIH staff signed the #BethesdaDeclaration and are screaming.
Abruptly terminating funding for ongoing #cancer clinical trials wastes more tax payer $ on unanswered questions & puts lives at risk.
An old video. A reminder.
Via @savehealthresearch.bsky.social on IG
This is why #NIH staff signed the #BethesdaDeclaration and are screaming.
Abruptly terminating funding for ongoing #cancer clinical trials wastes more tax payer $ on unanswered questions & puts lives at risk.
An old video. A reminder.
Via @savehealthresearch.bsky.social on IG
November 15, 2025 at 3:02 AM
🧪A must watch.
This is why #NIH staff signed the #BethesdaDeclaration and are screaming.
Abruptly terminating funding for ongoing #cancer clinical trials wastes more tax payer $ on unanswered questions & puts lives at risk.
An old video. A reminder.
Via @savehealthresearch.bsky.social on IG
This is why #NIH staff signed the #BethesdaDeclaration and are screaming.
Abruptly terminating funding for ongoing #cancer clinical trials wastes more tax payer $ on unanswered questions & puts lives at risk.
An old video. A reminder.
Via @savehealthresearch.bsky.social on IG
Reposted by Ximena Garcia Arceo
So stoked for another year with the best crew in the Art of Neuroscience exhibit at #SfN25!
Thank you @artologica.net for compiling all the artists in one digital space for all to peruse!
Thank you @artologica.net for compiling all the artists in one digital space for all to peruse!
November 14, 2025 at 4:14 PM
So stoked for another year with the best crew in the Art of Neuroscience exhibit at #SfN25!
Thank you @artologica.net for compiling all the artists in one digital space for all to peruse!
Thank you @artologica.net for compiling all the artists in one digital space for all to peruse!
I encourage trainees to apply next year!
It was a pleasure to co-organize with @allysonsgro.bsky.social Junior Scientist Workshop on Theoretical Biophysics at @hhmijanelia.bsky.social. We had great lectures and tutorials on theoretical approaches used to understand biological phenomena. Can't wait for the 2026 iteration, stay tuned.
November 12, 2025 at 12:21 AM
I encourage trainees to apply next year!
I second that!
Best conference I attended in a while, captures the full breadth of biophysics. So many refreshing ideas to understand living systems 🦋🐦⬛🪰🦠🪸🐙
It was a pleasure to co-organize with @allysonsgro.bsky.social Junior Scientist Workshop on Theoretical Biophysics at @hhmijanelia.bsky.social. We had great lectures and tutorials on theoretical approaches used to understand biological phenomena. Can't wait for the 2026 iteration, stay tuned.
November 12, 2025 at 12:21 AM
I second that!
Reposted by Ximena Garcia Arceo
Taxes on high earners are too low bsky.app/profile/popc...
Kim Kardashian shares her frustration in a new TikTok after failing the California bar exam, calling out psychics who told her she’d pass.
November 11, 2025 at 10:18 PM
Taxes on high earners are too low bsky.app/profile/popc...
Reposted by Ximena Garcia Arceo
Given the role of syntaxin in membrane fusion, and the fact that Stentor apparently heals its membrane rapidly which must somehow entail fusion of vesicles, the obvious hypothesis is that the syntaxin RNAi impairs membrane fusion
November 10, 2025 at 5:47 PM
Given the role of syntaxin in membrane fusion, and the fact that Stentor apparently heals its membrane rapidly which must somehow entail fusion of vesicles, the obvious hypothesis is that the syntaxin RNAi impairs membrane fusion
Reposted by Ximena Garcia Arceo
For example, you can cut a huge gash and pull out most of the cytoplasm in Stentor and it will flow back in
pubmed.ncbi.nlm.nih.gov/24378633/
pubmed.ncbi.nlm.nih.gov/24378633/
November 10, 2025 at 5:47 PM
For example, you can cut a huge gash and pull out most of the cytoplasm in Stentor and it will flow back in
pubmed.ncbi.nlm.nih.gov/24378633/
pubmed.ncbi.nlm.nih.gov/24378633/
Reposted by Ximena Garcia Arceo
and bro, bro, PYTHAGORUS? insanely talented bro
November 11, 2025 at 2:35 AM
and bro, bro, PYTHAGORUS? insanely talented bro
Reposted by Ximena Garcia Arceo
My awesome advisor @wallaceucsf.bsky.social summarizes our new #preprint on a syntaxin that’s important for #healing wounds in the ciliate #Stentor!
Wound healing is a hallmark feature of all life, including single cells. In a new preprint, Ambika Nadkarni @biochembika.bsky.social investigates a new dimension in cellular wound healing: how cells recover AFTER the wound has been closed
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
November 10, 2025 at 5:57 PM
My awesome advisor @wallaceucsf.bsky.social summarizes our new #preprint on a syntaxin that’s important for #healing wounds in the ciliate #Stentor!
Reposted by Ximena Garcia Arceo
by injecting fluorescent markers into the cytoplasm, Ulises Diaz was able to show that these blisters were actually huge membrane-bound vesicles docked near the cell surface.
November 10, 2025 at 7:35 PM
Reposted by Ximena Garcia Arceo
I was a UC PPFP fellow when I was a postdoc at UCSD. This program is invaluable--aside from support for two years of my postdoc, I received excellent mentoring from faculty at the UCs. This fellowship set me up for success and gave me a cohort of fellow postdocs who are now UC faculty. 1/2
A devastating set of decisions on the part of UC leadership to withdraw support from our nationally recognized postdoc program that prioritizes research excellence combined with addressing our university public service mission. www.insidehighered.com/news/faculty...
UC to Stop Funding Systemwide Postdoc Program
Established in 1984 to encourage women and minority Ph.D.s to pursue academia, the program has attracted right-wing criticism for prioritizing diverse candidates.
www.insidehighered.com
November 7, 2025 at 1:31 AM
I was a UC PPFP fellow when I was a postdoc at UCSD. This program is invaluable--aside from support for two years of my postdoc, I received excellent mentoring from faculty at the UCs. This fellowship set me up for success and gave me a cohort of fellow postdocs who are now UC faculty. 1/2
Reposted by Ximena Garcia Arceo
this is devastating for so many reasons and honestly, shame on the UC. Was hoping to keep the high going after Mamdani's win only come to falling back to earth and register that this country does not want us to succeed. www.insidehighered.com/news/faculty...
UC to Stop Funding Systemwide Postdoc Program
Established in 1984 to encourage women and minority Ph.D.s to pursue academia, the program has attracted right-wing criticism for prioritizing diverse candidates.
www.insidehighered.com
November 5, 2025 at 8:29 PM
this is devastating for so many reasons and honestly, shame on the UC. Was hoping to keep the high going after Mamdani's win only come to falling back to earth and register that this country does not want us to succeed. www.insidehighered.com/news/faculty...
Reposted by Ximena Garcia Arceo
It was great to finish off #UNCResearchWeek by seeing Sherry Hsu’s beautiful image on display in Bondurant Hall! 🔬🔬🔬
October 27, 2025 at 2:23 PM
It was great to finish off #UNCResearchWeek by seeing Sherry Hsu’s beautiful image on display in Bondurant Hall! 🔬🔬🔬
Reposted by Ximena Garcia Arceo
Almost show-time at the Bay Area Science Festival. Come see how cells can learn! If you can’t make it, you can find out about the super-powers of time organisms at the Nature’s Tiny Marvels web site: sites.google.com/view/natures...
October 25, 2025 at 4:58 PM
Almost show-time at the Bay Area Science Festival. Come see how cells can learn! If you can’t make it, you can find out about the super-powers of time organisms at the Nature’s Tiny Marvels web site: sites.google.com/view/natures...
Reposted by Ximena Garcia Arceo
“Cellular Olympics” our catalog of freeky ultra fast cellular superhero’s is freely available “Ann Rev of microbiology”
www.annualreviews.org/content/jour...
This is a compilation of world’s fastest single cell organisms - enjoy this buffet of rare delightful protists with mind bending speeds. 🧪
www.annualreviews.org/content/jour...
This is a compilation of world’s fastest single cell organisms - enjoy this buffet of rare delightful protists with mind bending speeds. 🧪
October 24, 2025 at 10:57 AM
“Cellular Olympics” our catalog of freeky ultra fast cellular superhero’s is freely available “Ann Rev of microbiology”
www.annualreviews.org/content/jour...
This is a compilation of world’s fastest single cell organisms - enjoy this buffet of rare delightful protists with mind bending speeds. 🧪
www.annualreviews.org/content/jour...
This is a compilation of world’s fastest single cell organisms - enjoy this buffet of rare delightful protists with mind bending speeds. 🧪
Reposted by Ximena Garcia Arceo
After talking to tech barons, Trump tells Mayor Lurie he's "calling off" a "surge" of feds to SF.
It's not clear if this applies to ICE/Border Patrol or just to the Nat'l Guard. It's not clear what will befall other area cities.
missionlocal.org/2025/10/ice-...
It's not clear if this applies to ICE/Border Patrol or just to the Nat'l Guard. It's not clear what will befall other area cities.
missionlocal.org/2025/10/ice-...
Live updates: Lurie says Trump 'calling off' plans for fed deployment in SF — other cities uncertain
President Trump deployed federal agents to Alameda ahead of what the Coast Guard said is a Bay Area-wide operation. Check back for updates.
missionlocal.org
October 23, 2025 at 6:26 PM
After talking to tech barons, Trump tells Mayor Lurie he's "calling off" a "surge" of feds to SF.
It's not clear if this applies to ICE/Border Patrol or just to the Nat'l Guard. It's not clear what will befall other area cities.
missionlocal.org/2025/10/ice-...
It's not clear if this applies to ICE/Border Patrol or just to the Nat'l Guard. It's not clear what will befall other area cities.
missionlocal.org/2025/10/ice-...
Reposted by Ximena Garcia Arceo
If National Guard troops are deployed to the Bay Area they would not be able to make immigration arrests. But they could offer “cover” for ICE agents who are doing so.
This has already taken place in other cities:
missionlocal.org/2025/10/how-...
This has already taken place in other cities:
missionlocal.org/2025/10/how-...
How could the National Guard support ICE in San Francisco?
National Guard troops deployed to the Bay Area could offer “cover” for federal agents making immigration arrests.
missionlocal.org
October 23, 2025 at 12:25 AM
If National Guard troops are deployed to the Bay Area they would not be able to make immigration arrests. But they could offer “cover” for ICE agents who are doing so.
This has already taken place in other cities:
missionlocal.org/2025/10/how-...
This has already taken place in other cities:
missionlocal.org/2025/10/how-...
Reposted by Ximena Garcia Arceo
My fantastic department at CU Boulder is hiring a tenure-track Assistant Professor! This is a broad search spanning nearly all areas of biology. Applications are due Nov 13, 2025. Feel free to reach out to me with questions, and please share widely.
jobs.colorado.edu/jobs/JobDeta...
jobs.colorado.edu/jobs/JobDeta...
October 17, 2025 at 4:00 PM
My fantastic department at CU Boulder is hiring a tenure-track Assistant Professor! This is a broad search spanning nearly all areas of biology. Applications are due Nov 13, 2025. Feel free to reach out to me with questions, and please share widely.
jobs.colorado.edu/jobs/JobDeta...
jobs.colorado.edu/jobs/JobDeta...
Reposted by Ximena Garcia Arceo
I’m excited to share that my PhD work is out in @jcb.org! Big thanks to my amazing mentor @stephgupton.bsky.social and inspiring collaborator @coronin.bsky.social!!!!
Ho, @stephgupton.bsky.social et al. find that coronin 1A mediates neuronal growth cone & filopodial dynamics, & its interaction with E3 ubiquitin ligase TRIM67 is required for morphological responses to the guidance cue netrin-1 rupress.org/jcb/article/...
#Neuroscience #Cytoskeleton #Development
#Neuroscience #Cytoskeleton #Development
October 15, 2025 at 1:26 PM
I’m excited to share that my PhD work is out in @jcb.org! Big thanks to my amazing mentor @stephgupton.bsky.social and inspiring collaborator @coronin.bsky.social!!!!
Reposted by Ximena Garcia Arceo
Last year, we helped 100 students save $31K in grad school app fees, giving students from underserved communities the freedom to apply widely.
This year we lost 16 partners = $8.2K setback = 110 fewer dreams.
🎓 You can change that.
💸 Donate to open 110 new doors.
givebutter.com/supportCL
This year we lost 16 partners = $8.2K setback = 110 fewer dreams.
🎓 You can change that.
💸 Donate to open 110 new doors.
givebutter.com/supportCL
October 13, 2025 at 7:17 PM
Last year, we helped 100 students save $31K in grad school app fees, giving students from underserved communities the freedom to apply widely.
This year we lost 16 partners = $8.2K setback = 110 fewer dreams.
🎓 You can change that.
💸 Donate to open 110 new doors.
givebutter.com/supportCL
This year we lost 16 partners = $8.2K setback = 110 fewer dreams.
🎓 You can change that.
💸 Donate to open 110 new doors.
givebutter.com/supportCL
No more press pieces lauding ML/AI companies allowed until one of them turns the Outlook email app into something approaching useful and usable
October 14, 2025 at 4:10 PM
No more press pieces lauding ML/AI companies allowed until one of them turns the Outlook email app into something approaching useful and usable