Regulatory T cells 🧬 — this year’s #NobelPrize story! How do Tregs stay stable during inflammation and keep autoimmunity in check as we age? Great talk by José Carlos Alves Filho elucidating novel mechanisms! #Immunology #Tregs #Aging #Autoimmunity #USP #ImmunoBuzios2025 #SBI
The Treg story continues! 🔬 Nicole Joller – Tregs & Th1 Steve Ziegler – regulating Tregs Fabio Canto – Gut Tregs & B cells Luciana Berod – linking Metabolism & T cell fate via post-translational protein modifications #Tregs #Immunology #Science #Metabolism #Nobel #SBI #ImmunoBuzios2025
I love to teach especially when it is to 150 highly motivated students sharing my passion for Tregs! During Nobel Week #SBII in Búzios 🇧🇷, the energy in the room was incredible. My personal highlight: Steven Ziegler‘s historical perspective: from supressors to Tregs! #Tregs #NobelWeek #Brazil

13. In summary: tolerance to self is a fixed, static system established at birth. It does not change dynamically during an individual’s life.

#immunology
#tolerance
#selfnonself
#science
#theory
#Foxp3
#Tregs

Why T Cell Tolerance Is Fixed from Birth

1. Unlike the innate immune system, which uses receptors to discriminate self from nonself based on biochemical features of the ligand (like LPS, foreign DNA, or foreign RNA)

#immunology
#tolerance
#selfnonself
#science
#theory
#Tregs

5/ Tellingly, even Shevach himself later made a U-turn, now arguing suppression is antigen-specific.

#immunology
#tolerance
#Foxp3
#Tregs

Another study using auxin-inducible #Foxp3 degradation just after Rudensky lab’s preprint. Curious overlap. Parallel thinking or a race to publish? 🧬👀

#Tregs
#immunology
#science

https://www.science.org/doi/10.1126/sciimmunol.adr7057

1/ 🧪 The Rudensky lab never shies away from using cutting-edge gene tech to study Tregs. Their latest approach? Reversible protein degradation via ubiquitination. 👀 #Immunology #Tregs #science #Foxp3

https://www.researchsquare.com/article/rs-6596747/v1

Temporal and Context-Dependent Requirements for the Transcription Factor Foxp3 Expression in Regulatory T Cells

Regulatory T (Treg) cells, expressing the transcription factor Foxp3, are obligatory gatekeepers of the immune responsiveness. While Foxp3 essential role in Treg l differentiation is well established, the mechanisms by which Foxp3 governs the Treg-specific transcriptional network remain incomplet...

Interesting contrast between the editor’s emphasis on Treg involvement in CD8 T cell priming and the complete absence of this point in the authors’ abstract.

#immunology
#IL2
#cytokine
#Tregs

https://www.science.org/doi/10.1126/science.adq1405

Initially, the thymus was believed to be an endocrine organ because its removal in early life caused changes in the ovaries and testes. Now, we understand these changes were linked to autoimmunity. 🤔🔬💡

#thymus
#Tregs
#endocrine
#autoimmunity
#science
#history

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1/ 🧪 The Rudensky lab never shies away from using cutting-edge gene tech to study Tregs. Their latest approach? Reversible protein degradation via ubiquitination. 👀 #Immunology #Tregs #science #Foxp3

https://www.researchsquare.com/article/rs-6596747/v1

2/💡 They engineered a system to reversibly degrade Foxp3, the master regulator of Treg identity. This lets them test what happens when #Foxp3 protein vanishes in adult mice. 🔄🧬
3/ Surprisingly, removing Foxp3 protein in adult Tregs didn't trigger immune chaos. 😲 Unlike in neonates, adult Tregs kept functioning.
➡️ Suggests the Treg program becomes self-sustaining over time. #ImmuneTolerance
4/ ⌛ It took about 2 weeks for Tregs to “lock in” their identity after Foxp3 expression. After that, it ran on autopilot, no Foxp3 protein needed... unless something disturbs the system (e.g., tumors or lymphopenia). 🔁
5/ 🤔 This raises 2 big questions:
1️⃣ If Foxp3 isn’t needed long-term, why do adult Tregs keep expressing it?
2️⃣ Could some Tregs lack Foxp3 protein and still function normally? Are we mislabeling? #Immunology #TregMystery
Generally speaking, this high-tech approach to biology isn’t intuitive but it may yield results through the sheer number of observations. #Immunology
@BOOKidealist
Really nice!
This seems to use the same degradation approach as #PROTAC use that some of my colleagues work on.