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Reposted by immunoboys

Dimitrios L. Wagner @dlwagner.bsky.social · 19d

You like engineering T cells, but you are missing the right flavor?

Check out 'one-pot' PASTA recipe 🔥🍝: www.biorxiv.org/content/10.1101/2025.09.10.675267v1

We combined a unique mix of CRISPR knock-in with serine integrases for easy-to-adopt
𝐏rogrammable
𝐀nd
𝐒ite-specific
𝐓ransgene
𝐀ddition
🧪

Versatile and efficient non-viral integration of large transgenes in human T cells via CRISPR knock-in and engineered integrases

Current gene transfer methods often lack the precision, versatility, or efficiency when integrating large transgenes, limiting the ability to engineer therapeutic T-cells with more complex payloads. H...

www.biorxiv.org

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immunoboys @immunoboys.bsky.social · 27d

Plasmacytoid dendritic cells can transition to become cDC2s under to influence of TNF, while type-I interferon reduces TNFR expression and thereby inhibits transition. These transitioned cDC2 seem fully functional. 🧪 ⑂

Hornero et al 2025 in Nat Immunol
www.nature.com/articles/s41...

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immunoboys @immunoboys.bsky.social · Sep 6

From the Rao Lab and the AMP Consortium:
Horisberger et al 2025 @jclinical-invest.bsky.social
www.jci.org/articles/vie...

JCI - Blood immunophenotyping identifies distinct kidney histopathology and outcomes in patients with lupus nephritis

www.jci.org

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immunoboys @immunoboys.bsky.social · Sep 6

Horisberger et al separate Lupus nephritis patients in 3 groups by blood:
healthy-like, interferon-dominant and CD8 T cell-dominant.
The CD8 T cell-dominant group had the highest biopsy activity score and highest response rate after 1 year; the healthy-like the most chronic damage. 🧪 ⑂ #NephSky
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immunoboys @immunoboys.bsky.social · Sep 2

A synonymous mitochondrial variant is negatively selected against in short-lived CD8 effectors – How?
The variant changes tRNA pairing from Watson-Crick-Franklin to wobble, thereby reducing translational efficiency in high energy demand. 🧪 ⑂
Lareau et al – 2025
www.pnas.org/doi/10.1073/...

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immunoboys @immunoboys.bsky.social · Aug 10

Effector CD8 T cells have punctate mitochondria with loose cristae, favoring glycolysis and memory T cells elongated mitochondria with tight cristae, favoring OxPhos.
Pharmacologic remodeling of mitochondria improves Teffs in adoptive transfer. 🧪 ⑂

Buck et al 2016 doi.org/10.1016/j.ce...

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Reposted by immunoboys

Lennard Ostendorf @lostendorf.bsky.social · Aug 7

In Lupus nephritis patients, neutrophils have increased surface LAMP1, which is externalized after activation. Soluble LAMP1 is increased both in the blood and urine of patients, correlating with histological activity. #NephSky 🧪
Our paper in @eurjimmunol.bsky.social
doi.org/10.1002/eji....

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immunoboys @immunoboys.bsky.social · Jul 30

Resting MAIT cells generally express the non-cytotoxic Granzyme K, but rapidly switch to the cytotoxic Granzyme B upon stimulation. Consequently, previously stimulated MAITs kill much more target cells than resting ones. 🧪

Kurioka et al – 2015 – @mucosalimmunol.bsky.social
doi.org/10.1038/mi.2...

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immunoboys @immunoboys.bsky.social · Jul 20

MR1-presented cholic acid 7-sulfate + 3-sulfate are endogenous stimulatory ligands for MAIT cells. Stimulation is much weaker than by traditional ligand 5-OP-RU, potentially contributing to steady state activation and thymic generation of MAITs.

Ito et al 2024
www.science.org/doi/10.1126/...

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immunoboys @immunoboys.bsky.social · Jul 12

Oxidized mitochondrial DNA induces NLRP3 activation in pDCs. This leads to enhanced pDC function beyond IFNa production so that they produce IL1b, IL6 and IL21, inducing Tfh differentiation and autoimmunity (in 🐭).

Xian et al – 2025 @natureportfolio.nature.com
www.nature.com/articles/s41...
🧪⑂

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immunoboys @immunoboys.bsky.social · Jul 9

Duffy Null-associated neutrophil counts (DANC) does not seem to be associated with increased risk of infection.

via @curiousclinpod.bsky.social
Merz et al – 2023 @bloodjournals.hematology.org

ashpublications.org/bloodadvance...

Absolute neutrophil count by Duffy status among healthy Black and African American adults

Key Points. The median ANC among Duffy-null individuals is significantly lower than that among Duffy non-null individuals.Nearly a quarter (23.8%) of Duffy

ashpublications.org

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immunoboys @immunoboys.bsky.social · Jul 9

Individuals of subsaharan ancestry often have a Duffy Null blood group. DARC (the Duffy protein) is a multi-chemokine sink on red blood cells.
Duffy Null people have lower peripheral blood neutrophil counts, likely resulting from increased neutrophil egress into the periphery.

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immunoboys @immunoboys.bsky.social · Jul 4

I thought my scRNA data is bad with all the plasmacytoid dendritic cells expressing Granzyme B. Turns out, human pDCs are known producers of Granzyme B and deliver it to T cells, inhibiting T cell expansion. 🧪⑂

Jahrsdörfer et al 2010 in @bloodjournals.hematology.org
doi.org/10.1182/bloo...

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immunoboys @immunoboys.bsky.social · Jul 1

S1P is produced in the outer lymph follicle area and degraded by B cells resulting in a negative gradient towards to follicle center. S1PR2 signalling on GC B cells leads to migration arrest, keeping B cells within the follicle. (🐭 data)

Green et al 2011 🧪⑂
www.nature.com/articles/ni....

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immunoboys @immunoboys.bsky.social · Jun 28

Succinate induces Treg dysfunction by inhibiting succinyl-CoA generation. Succinyl-CoA is necessary for FOXP3 succinylation and protection of FOXP3 from proteasome degradation.

Wang et al – 2025 @natureportfolio.nature.com
www.nature.com/articles/s41...

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immunoboys @immunoboys.bsky.social · Jun 27

We would like to acknowledge the consistent support of the baristas at #FOCIS2025 in Boston. Keeping us fueled through all the great science over the last few days. @focisimmunology.bsky.social 🧬🧪☕️

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immunoboys @immunoboys.bsky.social · Jun 21

Human naive CD4 T cells cultured in high sodium and Th17 polarising conditions will produce much more IL-17 than in normal sodium conditions, an effect mediated by p38/MAPK and SGK1.
Kleinewietfeld et al 2013 @natureportfolio.nature.com
www.nature.com/articles/nat...

#throwbayfriday 🧪⑂

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immunoboys @immunoboys.bsky.social · Jun 18

Both @immunoboys.bsky.social will be at FOCIS next week - looking forward to cool science in beautiful Boston. 🧪🔬

FOCIS - Federation of Clinical Immunology Societies @focisimmunology.bsky.social · Feb 18

Join us June 24-27, 2025, in the vibrant city of Boston, MA! If you haven't already, we recommend registering early. Rates go up the longer you wait! You can find all the details, including registration information, on the FOCIS 2025 website: zurl.co/vV0m6

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Reposted by immunoboys

FOCIS - Federation of Clinical Immunology Societies @focisimmunology.bsky.social · Feb 18

Join us June 24-27, 2025, in the vibrant city of Boston, MA! If you haven't already, we recommend registering early. Rates go up the longer you wait! You can find all the details, including registration information, on the FOCIS 2025 website: zurl.co/vV0m6

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immunoboys @immunoboys.bsky.social · Jun 16

Mice with low fecal IgA might be colonized be the auxotrophic Tomasiella immunophile which degrades kappa LC immunoglobulins in gut and induces disease-relevant reductions in intestinal IGs. 🧪⑂

Lu et al 2024 @science.org
www.science.org/doi/10.1126/...

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immunoboys @immunoboys.bsky.social · Jun 13

A 🐭 without Furin in T cells develops a spontaneous autoimmune disease with colitis and autoantibodies. This is likely because Furin in Tregs is necessary to activate TGFb, but also Furin-/- Tcons are less suppressable.
#throwbayfriday 🧪⑂
Pesu et al 2008 www.nature.com/articles/nat...

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immunoboys @immunoboys.bsky.social · Jun 4

After degranulation, mast cells attract neutrophils with LTB4 and trap them inside. These trapped neutrophils provide the mast cells with nutrients and lend them neutrophil abilities like expulsing NETs and proteases.

Mihlan et al 2024 @cellpress.bsky.social
www.cell.com/cell/fulltex...

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immunoboys @immunoboys.bsky.social · May 26

Analysing paired samples of human blood and thoracic duct lymph, Buggert &al show that human CCR7- non-resident memory CD8 T cells separate into a CX3CR1+ exclusively intravascular, cytotoxic and a non-cytotoxic, lymphatic population.

2020 in @cellpress.bsky.social 🧪⑂
www.cell.com/cell/fulltex...

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immunoboys @immunoboys.bsky.social · May 5

Exhausted CD8 T cells express the Beta-1 adrenergic receptor (ADRB1) and are found near sympathetic nerves. Activation with catecholamines leads to reduced TCR signalling and T cell function, while beta-blockade helps 🐭
Globig et al 2023 @natureportfolio.nature.com 🧪⑂
www.nature.com/articles/s41...

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