Macrophage and stem cell biologist. Interested in rebuilding tissues. Assistant Professor at @princetonmolbio. Opinions are my own. He/him.
Joined January 2012
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May 8
🎉 First preprint from our lab! Regulatory T cells are selectively recruited to regenerating but not scarring mouse digit tips, driving macrophage-mediated bone remodeling essential for regrowth. #immunology #regeneration biorxiv.org/content/10.64898…
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Kai Mesa retweeted
Jun 4
WHAT IF THE NEXT BREAKTHROUGH NEVER COMES?
📢 📢 📢 📢The trailer for The Endless Frontier, a new documentary film, by two time Emmy Winning Director Marilyn Ness is now OUT. I had the privilege of executive producing. @AaronFMertz @aaas @science_stand @NYcures @ImmunologyAAI @KR_Foundation @BWFUND @AllenInstitute @RitaAllenFnd
youtube.com/watch?v=rZ6sMhPD…
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Visibility in Academia, like in the world, is not fixed; it is produced. This piece “What Cell Biology Reveals About Academia” is a reminder that everyone has the potential to be either seen or unseen.Â
Â
sciencepolitics.org/2026/03/…
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Kai Mesa retweeted
For Princeton professor Lydia Lynch, #WorldCancerDay is about raising awareness for research and prevention – and honoring her own cancer journey. As a child, she never imagined she’d be a cancer scientist... instagram.com/p/DUVrrktlPff/
ALT Lydia Lynch, Professor of Molecular Biology and Ludwig Princeton Branch, Princeton University.
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Feb 6
Looking for postdocs to do pioneering research at the intersection of immunology and regenerative biology. We use multiphoton imaging to observe and manipulate immune cell behavior at the single-cell level in live animals. mesa-lab.org. Apply: apply.interfolio.com/180660
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On Friday, January 30, the MolBio Postdoc Committee hosted a special colloquium, "Welcoming 👏 New MolBio Postdocs." Of the 23 new postdocs for 2025, 11 attended the event introducing themselves and their research focus. Welcome aboard! 🚢 molbio.princeton.edu/news/20…
ALT Eleven of the 2025 new postdocs: (front row, l-r) Ayano Fukui (Cristea), Molly Sargen (Bassler), Chunyan Fu (Mesa), Susy X. Chen (Brooks), Xin Huang (Gitai), Haochen Fu (Shvartsman, Gitai, Levine); (back row, l-r) Isabella Burda (Devenport, Nelson), Ido Irani (Gitai, Wingreen), Gabriel D'Agostino (Bassler), Samer Ayoub (Ploss), and Emily Chen (Gitai). Pictured are a subset of the 23 new postdocs of 2025. Photo by C. Todd Reichart.
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15 Oct 2025
When Macrophages Disappear, Skin Blood Vessels Age!
Check out our new study @Nature that uncovers how the loss of specific macrophages with age blocks vessel repair and blood flow, revealing a new cellular trigger of tissue aging. #Aging #Immunology
👇👇
nature.com/articles/s41586-0…
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23 Apr 2025
Interested in graduate training in molecular and cellular biology? Consider the MolBio Scholars program. A fully funded visit to Princeton to learn about grad admissions, meet MolBio faculty, postdocs, and grad students, and attend the department retreat. molbio.princeton.edu/graduat…
ALT 2022 MolBio Scholars: (l-r) Amy Wuwu, Lance Li, Spencer Danner-Bocks, Peyton Carpen, Shukuru Rushanika, Nivitha Murali, Rafaella Shima, Kirsten Underwood, and Cayetana Lazcano Etchebarne.
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4 Jan 2025
Excited to share our revised manuscript! We adapted new live imaging tools to track the same tissue resident macrophages for months in aging mice. We found a macrophage population that contributes to vascular health in young skin, but is lost as we age... biorxiv.org/content/10.1101/…
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Kai Mesa retweeted
3 Dec 2024
Viruses can impact organelles in a host’s cells. So why does this make neighboring cells more vulnerable?
@toettch and Ileana M. Cristea are developing new tools to monitor and manipulate organelle connections at varying distances from infection sites. #FrontierScience
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20 Dec 2024
The secret sauce for starting a new lab is to set up the right kind of culture; one that best enables innovative science with its “enthusiasm, lucid criticism, nonconformism, and friendship” (Francois Jacob)
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The L’Oréal USA For Women in Science program is seeking five exceptional women scientists to advance their research and serve as role models for the next generation of girls in STEM. You could win $75,000 to advance your career and research! Apply Now: aaas.secure-platform.com:443…
ALT Promotional image for the 2025 L'Oréal For Women in Science Award, featuring the 2024 fellows, five smiling professionals in semi-formal attire, standing in a row. Text includes application deadline: February 14, 2025, at 5 PM ET, and details for applying at the L'Oréal Fellowships platform, emphasizing eligibility for current U.S. PhD or postdoctoral researchers.
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3 Dec 2024
ICYMI: Macrophages that were exposed to dying cells in vitro, induced different gene expression programs in response to IL-4 depending on the identity of apoptotic cells they had engulfed. This suggests macrophages are what they eat! #Immunology
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28 Aug 2023
Niche-specific macrophage loss promotes skin capillary aging biorxiv.org/cgi/content/shor… #bioRxiv
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2 Sep 2021
Arkadia-SKI/SnoN signaling differentially regulates TGF-β–induced iTreg and Th17 cell differentiation | Journal of Experimental Medicine | Rockefeller University Press rupress.org/jem/article/218/…
15 Jan 2021
Gradual differentiation uncoupled from cell cycle exit generates heterogeneity in the epidermal stem cell layer biorxiv.org/content/10.1101/…
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22 Dec 2019
Biiiiiiig Wiiin! 💙👊🏾👊🏽👊🏻 #NoToRacism #PleaseGetSomeBasicEducation #AlwaysBelieve #Hustle #cleansheet @ChelseaFC
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Kai Mesa retweeted
17 Jul 2019
Most popular names include Athletic/Atletico, AFC San Diego, Mission San Diego. Most popular colors include SD flag colors, brown and yellow, yellow and blue. Thoughts?
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31 Oct 2018
Join us for the live recording of Prof. Wolff's Global Capitalism: Monthly Economic Update. democracyatwork.info/globalc…