Mice models reveal big hopes for tiny plant vesicles to address obesity
Early advancements from the EU-funded NutriEV project suggest that plant-derived extracellular vesicles — tiny particles naturally present in foods — may help modulate inflammation and metabolic responses in mice models. It’s a promising step toward understanding how food could one day support future therapies for chronic diseases.
Dr Zhi Jane Chen, an immunologist at the University of Oulu in Finland, is part of the international research team behind NutriEV — a Horizon Europe project coordinated by the University and dedicated to exploring the health potential of nutrient-enriched extracellular vesicles (nutriEVs) from plants and fermented foods.
Her work focuses on understanding how these food-derived vesicles behave in living organisms, particularly in relation to inflammation and metabolic dysfunction.
“We use models that replicate gut disease and metabolic imbalance,” she explains. “The aim is to see how these vesicles interact with the immune system and influence disease development.”
Observing food’s microscopic impact
In Dr Chen’s current research, mice are fed plant-derived vesicles to assess their potential effects on gut and immune health. The vesicles come from selected edible plants and fermented foods, which are isolated and prepared in laboratory settings.
Although it’s still early in the project, the data gathered so far have shown some encouraging signs.
“We’ve observed differences in mice that received these vesicles,” she says. “There were signs of delayed disease onset and reduced severity in some cases, which suggest that the vesicles might play a regulatory role.”
Importantly, all the experiments are carried out under strict ethical standards. “We follow the 3Rs — reduce, refine, and replace — using the fewest animals needed to generate meaningful data,” she adds.
Beyond the gut: Signals from the immune system
One of the most intriguing ideas behind the NutriEV project is that these vesicles might act not only locally in the gut, but also at a distance — potentially reaching the bloodstream or immune organs.
Dr Chen’s findings offer some early support for this possibility.
“While we don’t yet have direct evidence showing where the vesicles go, we do see changes in immune activity elsewhere in the body. That suggests systemic effects, which we’re continuing to investigate.”
These systemic aspects are particularly relevant for future non-invasive health monitoring, as the project explores whether vesicles can be detected through sweat or other biological fluids — even using novel methods such as sensor patches or trained bumblebees.
Linking Nutrition and Immunity
As a scientist who has long studied how T cells regulate inflammation, Dr Chen is especially interested in how food-based particles can influence immune responses.
“Our observations suggest that these vesicles may help modulate the immune system,” she says. “That’s very exciting from a health perspective — especially when we think about future strategies for preventing or managing chronic inflammation.”
The team is now working to uncover the exact mechanisms: how these vesicles interact with immune cells, which molecules are involved, and how this might be harnessed for health applications.
A promising pathway forward
Looking to the future, Dr Chen and her colleagues are focused on building a deeper understanding of how dietary vesicles work at the molecular level. They’re also preparing to analyse tissue samples and immune markers in more detail to validate early observations.
Although these are still early days in a four-year research journey, she is optimistic about what lies ahead.
“The project began less than a year ago, and we’re already seeing promising signs,” she reflects. “Of course, we need to continue our studies before we can talk about clinical applications. But the direction is encouraging.”
Ultimately, NutriEV is helping to open new possibilities — where the power of food and nutrition meets the frontiers of biotechnology and immune science.