Hyytiälä 2025: Advancing the science of nutrition-derived vesicles in development 

Nestled in the heart of the Finnish forest, the Hyytiälä Forestry Field Station became a thriving meeting ground for researchers on 30–31 October. The Joint Annual Meeting of the Cell and Tissue Dynamics (CTD) Programme and the Finnish Society for Developmental and Stem Cell Biology (FSDSCB) gathered scientists to discuss how cells grow, communicate, and shape life.  

But beyond its traditional focus on development and stem cells, this year’s meeting ventured into new territory, how nutrition and tiny biological messengers called extracellular vesicles (EVs) might influence development and health. 

For the NutriEV project, which investigates how plant-derived nanovesicles affect human biology, this was an inspiring setting. Two presentations from the Vainio Laboratory at the University of Oulu, led by Professor Seppo Vainio, coordinator of the project, sparked lively conversations about how nutrition-derived vesicles could influence life at its earliest stages. 

Hamza Siddiqui, a researcher in the group, presented work on an immune-deficient embryonic environment as a model to explore the complex dialogue between host, cancer, and immune systems. Although designed for cancer biology, the model has clear implications for NutriEV: it reveals how foreign vesicles, such as those originating from plants, could integrate into developing tissues when the body’s immune defences are not yet mature.  

In Vainio’s words, “Such an embryonic niche offers a unique window into how nutrition-borne signals might guide tissue development.” 

Throughout the two days, the atmosphere was electric. Researchers discussed organoid systems, stem-cell-derived tissues, gastruloid models, and advances in 3D cell culture, precisely the kind of platforms that can bring NutriEV’s vision to life. As conversations unfolded over coffee and under the autumn canopy, three key insights emerged. 

1. Plant nanovesicles can cross biological barriers. Evidence shows that in young organisms, these vesicles can travel beyond the gut, even reaching the placenta. This offers a tangible route through which a mother’s diet could influence her baby’s development—by delivering vesicle-bound nutrients and genetic information that tweak early growth and metabolism. 

2. Vesicles may reach and affect germ-line cells. Because these nanoscale couriers can cross barriers that most molecules cannot, they might interact with reproductive cells, transmitting nutritional or environmental information across generations. 

3. Organoids and embryonic models are ideal testing grounds. Many of the models presented at Hyytiälä—mini-organs grown in the lab, are perfectly suited for studying how dietary vesicles affect gene expression, cell fate, and metabolism. 

As Prof. Vainio reflected, “Cells are never alone, they are constantly talking, and much of that conversation happens through vesicles.” His presentation on maternal – fetal communication captivated the audience. He shared evidence that vesicles produced in the maternal gut can cross into the fetus, influencing development. This discovery supports the bold idea that plant-derived vesicles, tiny particles found in fruits, grains, and fermented foods, could follow the same routes, shaping early immune and metabolic systems. 

Talks by Kari Vaahtomeri and Jeremia Saari added another piece to the puzzle: how the immune system and lymphatic vessels regulate what passes between tissues. Their findings align with NutriEV’s research on how plant vesicles enter the bloodstream via the gut’s lymphatic system—a mechanism that could explain how diet impacts immune balance and metabolism. 

Meanwhile, studies on cancer and intestinal health demonstrated that vesicle-borne signals can remodel tissues, strengthen barriers, and dampen inflammation. Mechanobiology presentations on proteins such as Piezo1 hinted at something even more intriguing, that vesicles might influence cells not only through biochemical messages but also through mechanical cues. This adds a new dimension to the potential of plant vesicles as protectors of gut and metabolic health. 

In discussions on metabolism and stress, scientists noted how cells adapt to environmental signals. Plant EVs, rich in metabolites and regulatory RNAs, could encourage cells to adopt more balanced, resilient states. This connects directly with NutriEV’s aim to develop nutritional vesicles as tools for precision health and disease prevention. 

Technological advances showcased at the meeting, such as single-cell multi-omics, sophisticated placenta-on-chip systems, and advanced organoid platforms, offered practical tools for NutriEV’s mission. These innovations will help the project trace how plant vesicles interact with human cells and verify their therapeutic potential in detail. 

By the end of the conference, one message resonated: vesicles are universal messengers of life. Whether they come from humans, microbes, or plants, their biological cargo and the body’s response are what truly matter. This idea, deeply aligned with NutriEV’s philosophy, points to a future where food-derived vesicles are recognised not just as nutrients, but as active communicators between kingdoms of life. 

As the meeting drew to a close, Professor Vainio summarised the collective insight: “This supports NUTRIEV’s view that plant nanovesicles are not simple supplements but conserved cross-kingdom messengers capable of influencing maternal–fetal signaling, gut–immune balance, metabolic regulation, and early disease processes. The meeting offered strong mechanistic backing for this direction.” 

The forest at Hyytiälä may have fallen quiet after the lively debates, but the echoes of those ideas continue to shape how we see nutrition and development. For NutriEV, the meeting provided not only validation but also inspiration, a mechanistic framework for how food might speak the language of life itself.