Tregs tagged posts

A protective immune system cell disappears from a key form of fat, but only in those who are obese

A protective immune system cell disappears from a key form of fat, but only in those who are obese
Loss of Srebf2 alters VAT Treg subset composition. Credit: Science Immunology (2025). DOI: 10.1126/sciimmunol.adl4909

The mammalian immune system is an evolutionary wonder. It’s capable of recognizing and destroying cancer cells, and it can deploy armies of antibodies against viruses, bacteria, parasites and fungi.

Among the lesser-spotlighted roles of the immune system is how a particular T cell helps maintain homeostasis—fostering a balanced and stable metabolic environment—in fat cells. It’s a role that has captured the investigatory eye of an elite team of immunologists.

Having a stronger understanding of the dynamic metabolic activities and signaling pathways in fat tissue can aid new strategies to treat obesity, a major global health concern...

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New insights into a Potential Target for Autoimmune Disease

Researchers from Penn teamed with colleagues to decipher the mechanism by which the protein DEL-1 leads to the generation of T cells expression FOXP3, which rein in inflammatory responses, such as those responsible for autoimmune disease. (Image: Courtesy of the Hajishengallis laboratory)

With insights into a molecular pathway that regulates the activity of Tregs, a type of T cell involved in immunosuppression, new research opens up possibly new avenues for treating inflammatory and autoimmune diseases.

Immune response is a balancing act: Too much can lead to inflammatory or autoimmune disease; too little could lead to a serious infection...

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Discovery of Potent Parasite Protein may lead to new Therapeutic options for Inflammatory Bowel Conditions

High magnification micrograph of Crohn's disease. Biopsy of esophagus. H&E stain. Credit: Nephron/Wikipedia

High magnification micrograph of Crohn’s disease. Biopsy of esophagus. H&E stain. Credit: Nephron/Wikipedia

A single protein from a worm parasite may one day offer new therapeutic options for treating inflammatory bowel diseases like Crohn’s or Ulcerative Colitis, that avoid the potentially serious side effects of current immunosuppressant medications. The study, published today in Nature Communications, demonstrates the discovery of a distinct new worm protein which mimics a cytokine found in humans, known as transforming growth factor-beta (TGF-β). The newly-discovered protein switches off inflammation by inducing “regulatory T cells”, the body’s own means of dampening excessive reactivity.

The “Hygiene Hypothesis” suggests that some bugs and parasites may protect you from an overly-rea...

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How Loss of Bacterial Symbionts Promotes Development of Allergies & acts on Immune System Balance


  
The presence of microbes specifically blocks the immune cells responsible for triggering allergies. It is well known the microbiota is involved in many mechanisms, including digestion, vitamin synthesis and host defense.The hygiene hypothesis suggests a link between a decline in infectious diseases and increase in allergic diseases in industrialized countries. Improvements in hygiene levels lead to reduced contact with microbes that is paralleled by an increased incidence in allergic and autoimmune diseases, eg type 1 diabetes.

Epidemiological studies have substantiated this hypothesis, by showing children living with farm animals – and thus with more microbial agents – develop fewer allergies during their lifetime...

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