Giorgia Guglielmi

Giorgia Guglielmi is a freelance science writer based in Basel, Switzerland. Specializing in life sciences, medicine, and the relationship between science and society, she has published numerous articles in outlets including Nature, Science, and Scientific American. She holds a PhD in biology from the European Molecular Biology Laboratory and a Master’s in Science Writing from the Massachusetts Institute of Technology. She has received recognition for her work, including the John Kendrew Award in 2020 and an ERC-funded FRONTIERS Media Fellowship in 2025. She has also led lectures and workshops on science communication at institutions such as Harvard University and the University of Zurich.

Microbial particles may boost the effectiveness of immunotherapy in stomach cancer

Bacterial extracellular vesicles released by L. salivarius activate immune cells, boosting the effectiveness of immunotherapy in stomach cancer.

Hidden gut bacteria may be key to a healthy microbiota

Uncultured gut bacteria, particularly one group called CAG-170, are key contributors to a healthy microbiota. 

Region-specific infant gut bacteria may pave the way for tailored probiotics

Bifidobacterium longum and B. infantis are distinct species with strains adapted to local diets, highlighting the importance of developing geographically tailored infant probiotics.

Gut protein blocks harmful bacteria and protects intestinal health

HMGB1 is a key protein that blocks bacterial adhesion and virulence, protecting intestinal cells and helping to maintain a healthy microbiota.

Healthy donor fecal transplants may boost immunotherapy in kidney cancer

Modifying the microbiota through a fecal transplant can be safely combined with immunotherapy in people with kidney cancer.

Gut microbe and its metabolite may protect the heart from atrial fibrillation

Restoring R. gnavus or supplementing isovaleric acid could be a promising microbiota–based strategy to prevent or treat atrial fibrillation. 

In mice, a ketogenic diet protects the lungs from sepsis via gut bacteria

Azelaic acid travels from the gut to the lungs, where it activates immune cells to reduce inflammation and protect the lungs.

Nursery interactions can contribute more to babies’ gut microbiotas than family

Even after long breaks, such as summer vacation, babies continued to share more microbes with former nursery peers than with children from other nurseries.

Stem-like cells in the gut sense commensal bacteria to recruit protective immune cells

E. coli 541-15 helps the colon recruit key immune cells that can develop into macrophages.

Mouth bacteria might play an active role in obesity

Computer models combining oral bacteria, their metabolic functions, and saliva chemicals could better distinguish obese from healthy individuals compared with clinical measurements alone. 

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