Luka Mesin
@lukamesin.bsky.social
📤 403
📥 141
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B-cell biologist.
Read our latest preprint. A window into GC clonal evolution upon boost.
add a skeleton here at some point
3 days ago
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Luka Mesin
Gabriel Victora
3 days ago
Happy to share our latest preprint on the clonal dynamics of GC “refueling.” We asked what happens at the clonal level after the simple (and ubiquitous) step of delivering a second vaccine dose during an ongoing GC response.
www.biorxiv.org/content/10.6...
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https://www.biorxiv.org/content/10.64898/2026.05.26.728008v1
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Luka Mesin
Gabriel Victora
3 months ago
One more trick pulled off by antibody-mediated feedback
www.cell.com/immunity/ful...
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Antibody-mediated feedback modulates interclonal competition in the germinal center
Antibodies generated by prior immune responses regulate B cell responses upon recall immunization. Barbulescu et al. examine whether antibodies produced by an ongoing immune response influence the out...
https://www.cell.com/immunity/fulltext/S1074-7613(26)00029-4
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Luka Mesin
Michela Locci
6 months ago
I am excited to share that our work, in which we have dissected the signals driven by the nucleoside-modified mRNA and LNP components of mRNA vaccines that regulate germinal center (GC) responses, is now published in Cell!
www.cell.com/cell/fulltex...
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Distinct components of mRNA vaccines cooperate to instruct efficient germinal center responses
This study dissects the individual contributions of the different components of mRNA vaccines to immune responses. Nucleoside-modified mRNA promotes the production of type I interferons that act on de...
https://www.cell.com/cell/fulltext/S0092-8674%2825%2901358-3
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reposted by
Luka Mesin
Gabriel Victora
7 months ago
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...
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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...
https://www.biorxiv.org/content/10.1101/2025.11.06.686519v1
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Luka Mesin
William DeWitt
12 months ago
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.
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Luka Mesin
Gabriel Victora
12 months ago
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...
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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...
https://www.biorxiv.org/content/10.1101/2025.06.02.656870v1
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Luka Mesin
IMAGE Lab
about 1 year ago
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! đź§µ
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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…
https://www.sciencedirect.com/science/article/pii/S0092867425004076
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reposted by
Luka Mesin
Roham Parsa
about 1 year ago
Hi, we are looking for two motivated postdocs to join our group!
job-boards.greenhouse.io/chanzuckerbe...
job-boards.greenhouse.io/chanzuckerbe...
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Research Scholar, T cell Tissue Adaptation and Residency (Parsa Group - Biohub NY)
New York, New York, United States
https://job-boards.greenhouse.io/chanzuckerbergbiohubny/jobs/4550633005?gh_src=f5309c261us
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reposted by
Luka Mesin
Eric Topol
about 1 year ago
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...
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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.
https://nature.com/articles/s41586-025-08728-2
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reposted by
Luka Mesin
The Rockefeller University
about 1 year ago
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
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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...
https://www.rockefeller.edu/news/37499-new-mechanism-behind-adaptive-immunity-revealed-it-could-impact-how-we-design-vaccines/?utm_source=social&utm_medium=post
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reposted by
Luka Mesin
Gabriel Victora
about 1 year ago
Cool germinal center acrobatics from Juhee Pae et al, check it out!
www.nature.com/articles/s41...
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https://www.nature.com/articles/s41586-025-08687-8
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reposted by
Luka Mesin
Sarah Ross
about 1 year ago
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
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reposted by
Luka Mesin
Sarah Ross
over 1 year ago
#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.
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reposted by
Luka Mesin
Sarah Ross
over 1 year ago
#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.
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reposted by
Luka Mesin
Roham Parsa
over 1 year ago
We are looking for a Research Assistant! Come and build a great science team with me!
#STEMjobs
#ImmunoSky
job-boards.greenhouse.io/chanzuckerbe...
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Research Associate - Parsa Group
New York, New York, United States
https://job-boards.greenhouse.io/chanzuckerbergbiohubny/jobs/4509161005?gh_src=f5309c261us
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reposted by
Luka Mesin
Djenet Bousbaine
over 1 year ago
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.
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Luka Mesin
Michael Fischbach
over 1 year ago
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
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Luka Mesin
Dr Debbie Burnett
over 1 year ago
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
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reposted by
Luka Mesin
IMAGE Lab
over 1 year ago
Time for a reset...let's go!
go.bsky.app/8avwjYw
add a skeleton here at some point
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reposted by
Luka Mesin
Rod Rahimi
over 1 year ago
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 đź§Ş
go.bsky.app/PY5tCas
go.bsky.app/FmERUoD
go.bsky.app/6aT6qDS
go.bsky.app/QSEPDoj
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