Category Biology/Biotechnology

Healthy Gut Bacteria can help Fight Cancer in other parts of the body, researchers find

Healthy gut bacteria can help fight cancer in other parts of the body, researchers find
Immune checkpoint therapy (ICT) helps gut microbiota travel from the gut to the lymph nodes where they activate immune cells (dendritic cells and T cells). Ultimately, both gut microbiota and activated immune cells then enter the tumor. When specific bacteria cannot travel to the lymph node and tumor and activate immune cells, immune checkpoint therapy is not effective. Credit: Science Immunology (2023). DOI: 10.1126/sciimmunol.abo2003

Researchers at UT Southwestern Medical Center have discovered how healthy bacteria can escape the intestine, travel to lymph nodes and cancerous tumors elsewhere in the body, and boost the effectiveness of certain immunotherapy drugs...

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Potential New Therapeutic Target for Inflammatory Diseases such as Lupus and Sepsis

Trinity and Cambridge scientists unearth potential new therapeutic target for inflammatory diseases

Scientists working in the School of Biochemistry and Immunology in the Trinity Biomedical Sciences Institute at Trinity College Dublin have made an important breakthrough in understanding what goes wrong in our bodies during the progression of inflammatory diseases and – in doing so – unearthed a potential new therapeutic target.

The scientists have found that an enzyme called Fumarate Hydratase is repressed in macrophages, a frontline inflammatory cell type implicated in a range of diseases including Lupus, Arthritis, Sepsis and COVID-19.

Professor Luke O’Neill, Professor of Biochemistry at Trinity is the lead author of the research article that has just been published in leading international journal, Nature. He said:

“No-one has made a link from Fumarate Hydratase to infla...

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The Marathon Runners of the Immune System

Highlights
Interleukin-33 (IL-33) promotes the expansion of stem-like CD8 T cells (CD8+SL)
IL-33 signals augment chromatin accessibility of CD8+SL in chronic viral infection
IL-33 prevents the loss of Tcf-1 expression by balancing type I interferon effects
IL-33 signaling to CD8+SL preserves these cells’ stemness and re-expansion capacity

When it comes to chronic infections and cancer, a particular type of immune cell plays a central role in our defenses. Researchers at the University of Basel have uncovered the key to the tenacity of these immune cells in coping with the marathon that is fighting a chronic infection. Their results lay the foundations for more effective therapies and vaccination strategies.

Infected and abnormal cells have to go...

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Rhythmic Eating Pattern preserves Fruit Fly Muscle Function under Obese Conditions

Fig. 7
Proposed mechanism of TRF in Drosophila skeletal muscle under obesogenic challenges.

Obese fruit flies are the experimental subjects in a Nature Communications study of the causes of muscle function decline due to obesity. In humans, skeletal muscle plays a crucial role in metabolism, and muscle dysfunction due to human obesity can lead to insulin resistance and reduced energy levels.

Interestingly, studies in various animal models have shown that time-restricted feeding — a natural non-pharmaceutical intervention — protects against obesity, aging and circadian disruption in peripheral tissues such as skeletal muscle. However, the mechanisms underlying those benefits were not known.

In fruit flies — scientifically known as Drosophila melanogaster — obese Drosophila that are subje...

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