Luka Mesin
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lukamesin.bsky.social
Luka Mesin
@lukamesin.bsky.social
B-cell biologist.
Reposted by Luka Mesin
Check out our latest preprint on the effects of antibody-mediated feedback on ongoing germinal center reactions, led by Alex Barbulescu and @janabilanovic.bsky.social

www.biorxiv.org/content/10.1...
Antibody-mediated feedback modulates interclonal competition in the germinal center
Serum antibodies from prior immune responses regulate B cell activation and germinal center (GC) access upon recall immunization. However, how antibodies produced by an ongoing immune response influen...
www.biorxiv.org
November 8, 2025 at 3:04 PM
Reposted by Luka Mesin
I'm stoked to have this long-term and highly collaborative effort out in the wild. We present an experimental evolution system to quantitatively study the rapid evolutionary dynamics of B-cell affinity maturation. These evolutionary mechanisms underpin antibody responses and immune memory formation.
June 7, 2025 at 11:30 PM
Reposted by Luka Mesin
Wanted to highlight our latest preprint--a huge effort by multiple people and labs, but led primarily by @wsdewitt.github.io, Tatsuya Araki, and Ashni Vora, in a very close wet-dry collaboration with @matsen.bsky.social’s lab at the Hutch

www.biorxiv.org/content/10.1...
Replaying germinal center evolution on a quantified affinity landscape
Darwinian evolution of immunoglobulin genes within germinal centers (GC) underlies the progressive increase in antibody affinity following antigen exposure. Whereas the mechanics of how competition be...
www.biorxiv.org
June 5, 2025 at 2:28 PM
Reposted by Luka Mesin
Happy #DayofImmunology! Congrats @ramadhenni.bsky.social & Alexandra Carey Hoppé it's out (finally!) @cp-cell.bsky.social! Incredibly grateful to co-leads @mlmunier.bsky.social, Vanessa Venturi & Tony Kelleher & all brilliant folks @garvaninstitute.bsky.social & Kirby Inst. for fantastic collab! 🧵
Macrophages direct location-dependent recall of B cell memory to vaccination
Vaccines generate long-lived plasma cells and memory B cells (Bmems) that may re-enter secondary germinal centers (GCs) to further mutate their B cell…
www.sciencedirect.com
April 29, 2025 at 1:20 PM
Reposted by Luka Mesin
Hi, we are looking for two motivated postdocs to join our group!

job-boards.greenhouse.io/chanzuckerbe...

job-boards.greenhouse.io/chanzuckerbe...
Research Scholar, T cell Tissue Adaptation and Residency (Parsa Group - Biohub NY)
New York, New York, United States
job-boards.greenhouse.io
April 7, 2025 at 10:36 PM
Reposted by Luka Mesin
How can B cells rapidly proliferate and have mutations suppressed? A longstanding mystery solved involving transient mutation suppression capability of germinal centers
nature.com/articles/s41...
www.nature.com/articles/s41...
Regulated somatic hypermutation enhances antibody affinity maturation - Nature
Germinal centre B cells modify their mutation rate to preserve high-affinity receptors, thereby safeguarding high-affinity B cell lineages and enhancing the outcomes of antibody affinity maturation.
nature.com
March 19, 2025 at 7:56 PM
Reposted by Luka Mesin
New imaging from @victora.bsky.social's lab reveals a built-in safeguard that allows B cell populations to rapidly expand in germinal centers without introducing deleterious mutations. #RockefellerScience
New mechanism behind adaptive immunity revealed. It could impact how we design vaccines. - News
Germinal centers are high-speed evolution machines. Tiny clusters in the lymph nodes, germinal centers refine antibodies through mutation and expansion until they produce high-affinity B cells adapted...
www.rockefeller.edu
March 19, 2025 at 6:40 PM
Reposted by Luka Mesin
Cool germinal center acrobatics from Juhee Pae et al, check it out!

www.nature.com/articles/s41...
www.nature.com
March 19, 2025 at 5:08 PM
Reposted by Luka Mesin
ICYMI by First release - now in print @science.org

Identification of APCs in the gut that promote Treg differentiation and how tolerance to food antigens is influenced by helminth infection.

buff.ly/3DjNQ1e

By @cicacanesso.bsky.social @danmucida.bsky.social @victora.bsky.social et al
March 14, 2025 at 3:25 PM
Reposted by Luka Mesin
#Immunology by first release now @science.org

Plasma cells producing high-affinity antibodies dominate the plasma cell population through increased proliferation.

https://buff.ly/3BzpLmL

By Andrew MacLean, Michel Nussenzweig et al.
December 19, 2024 at 8:13 PM
Reposted by Luka Mesin
#Immunology by First release now @science.org

Identification of APCs in the gut that promote Treg differentiation and how tolerance to food antigens is influenced by helminth infection

https://buff.ly/3DjNQ1e

By Maria Canesso, @danmucida.bsky.social , @victora.bsky.social and colleagues.
December 19, 2024 at 8:08 PM
Reposted by Luka Mesin
We are looking for a Research Assistant! Come and build a great science team with me! #STEMjobs #ImmunoSky

job-boards.greenhouse.io/chanzuckerbe...
Research Associate - Parsa Group
New York, New York, United States
job-boards.greenhouse.io
December 17, 2024 at 2:40 PM
Reposted by Luka Mesin
Check out our last pub. from @mfgrp.bsky.social al lab! We discovered that skin commensal microbes induce systemic and local B cell responses upon colonization and took advantage of this knowledge to create topical vaccines using engineered skin microbes. Please read the thread for details.
Today we report that an engineered skin bacterium, swabbed gently on the head of a mouse, can unleash a potent antibody response against a pathogen. Could lead to topical vaccines that are applied in a cream. @djenetbousbaine.bsky.social led the charge... @natureportfolio.bsky.social 1/55
December 12, 2024 at 12:33 AM
Reposted by Luka Mesin
Today we report that an engineered skin bacterium, swabbed gently on the head of a mouse, can unleash a potent antibody response against a pathogen. Could lead to topical vaccines that are applied in a cream. @djenetbousbaine.bsky.social led the charge... @natureportfolio.bsky.social 1/55
December 11, 2024 at 4:29 PM
Reposted by Luka Mesin
I’ve tried to put together a starter pack of immunologists/scientists exploring B Cell Repertoires and Antibody Affinities.

Please feel free to share/join!

go.bsky.app/4P64DmM
December 3, 2024 at 11:09 PM
Reposted by Luka Mesin
Time for a reset...let's go!

go.bsky.app/8avwjYw
November 17, 2024 at 7:19 AM
Reposted by Luka Mesin
Friends, it's fun to see the #immunology community continue to grow! I created a 4th Starter Pack to help folks find each other. If you're an immunologist and you don't see yourself on the lists, let me know 🧪

go.bsky.app/PY5tCas

go.bsky.app/FmERUoD

go.bsky.app/6aT6qDS

go.bsky.app/QSEPDoj
Friends, the second #immunology starter pack filled in 3 days! I started a third to help folks new to BlueSky rebuild their network

Below are the links

If you're an immunologist and I have missed you so far, let me know 🧪

go.bsky.app/PY5tCas

go.bsky.app/FmERUoD

go.bsky.app/6aT6qDS
Wonderful to see the #immunology community growing here.

The first starter pack is full (they cap at 150), so I created a second one. Let me know if you'd like to be added

go.bsky.app/PY5tCas

go.bsky.app/FmERUoD
November 29, 2024 at 4:47 PM