O Nobel de Medicina e sua implicações para a saúde ocular
- cijnusp
https://jornal.usp.br/radio-usp/o-nobel-de-medicina-e-sua-implicacoes-para-a-saude-ocular/
#EduardoRocha #RdioUSP #Foxp3 #FredRamsdell #MaryBrunkow #NobeldeMedicina #ShimonSakaguchi
O Nobel de Medicina e sua implicações para a saúde ocular
- cijnusp
https://jornal.usp.br/radio-usp/o-nobel-de-medicina-e-sua-implicacoes-para-a-saude-ocular/
#EduardoRocha #RdioUSP #Foxp3 #FredRamsdell #MaryBrunkow #NobeldeMedicina #ShimonSakaguchi
Mary Brunkow’s #FOXP3 discovery earned her a Nobel, though she left the field soon afterward. Douglas Prasher cloned #GFP in 1992, left the field too, and was notably left out of the #Nobel for its discovery.
https://www.science.org/content/article/what-s-it-tell-someone-she-won-nobel-prize
【關鍵專訪】2025諾貝爾醫學獎:「調節性T細胞」像憲兵?相關研究為何曾被認為是「假的」?
julia 2025-10-07 14:13:00 CST2025諾貝爾醫學獎昨(6)日揭曉,由美國學者布朗柯、藍斯德爾以及日本免疫學家坂口志文共享殊榮。究竟研究的內容是什麼?為何學者以「軍隊中的憲兵」來進行比喻?《關鍵評論網》邀請學者就這次獲獎的研究內容進行白話解說。
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
Not just ‘memory T cells act as microbial surrogates to drive innate immune activation and inflammation’, activated CD4 T cells can as well. This is precisely why only antigen-specific Tregs can keep anti-self T cell responses from spiraling out.
https://www.annualreviews.org/content/journals/10.1146/annurev-immunol-083122-040624
5/ Tellingly, even Shevach himself later made a U-turn, now arguing suppression is antigen-specific.
Another study using auxin-inducible #Foxp3 degradation just after Rudensky lab’s preprint. Curious overlap. Parallel thinking or a race to publish? 🧬👀
Recent research connects RORγt⁺ APCs to food-specific pTregs in tolerance. But a new study from the Sakaguchi lab reveals these pTregs are short-lived and unstable potentially challenging existing models of oral tolerance.
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. 🔄🧬
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
6/ 🔬 These inconsistencies raise key questions about how Treg suppression works in different contexts. More research needed! 🏗️📖
What do you think? Drop your thoughts below! ⬇️💬
1/ 📢 A new study was recently published in Science Translational Medicine investigating antigen specificity in Treg-mediated suppression of effector T cells in a celiac model. 🔬🍞
1/ 🧵 What is the TCR specificity of Foxp3+ Tregs? They're as diverse as conventional T cells, but very few antigen-specific Tregs have been described. This lack of specificity leads to many unfounded statements. Let's dive in. 🔬
A Treg-centered model of self-nonself discrimination.
1/ A few days ago, Science published a major study on Foxp3+ Tregs. Here's my analysis & conceptual takedown of its implications. 🧵👇
1/ Let's do a deep dive into the best research article on Foxp3+ Tregs this month (January 2025) and highlight its strengths and weaknesses.
'We found that up-regulation of a primate-specific short isoform of PRDM1-S induces expression of SGK1 independent from the evolutionarily conserved long PRDM1, which led to destabilization of #FOXP3 & #Treg dysfunction. This aberrant PRDM1-S/SGK1 axis is shared among other autoimmune diseases.'
#Immunology
https://www.science.org/doi/10.1126/scitranslmed.adp1720
"Here, by comprehensively mapping 3D #chromatin organization during #Treg cell differentiation, we show that Treg-specific chromatin structures were progressively established during its lineage specification, and highly associated with Treg signature gene expression. Additionally, the binding sites of #Foxp3, a Treg lineage specifying #transcription factor, were highly enriched at Treg-specific chromatin loop anchors."
"Notably, TCR-M cells that were predifferentiated toward a regulatory phenotype in vitro maintained stable in vivo #FOXP3 (Forkhead box P3) expression and anti-inflammatory activity whereas #th17
partially converted toward a regulatory phenotype in the injured myocardium."
https://www.ahajournals.org/doi/10.1161/CIRCRESAHA.122.322183