Haruyo Nakajima-Adachi: Advancing Research in Food Allergy, Immunology, and Bone Health

Haruyo Nakajima-Adachi is a Project Associate Professor at the Graduate School of Agricultural and Life Sciences, The University of Tokyo. Her research focuses on the interplay between food allergies, immune responses, intestinal inflammation, and bone loss, with particular attention to how gut-derived immune cells influence distant organs like bone marrow.

Her work has contributed significantly to understanding the mechanisms behind food-allergic enteropathy and its systemic effects. In a 2021 study published in Mucosal Immunology, Nakajima-Adachi and colleagues demonstrated that effector memory CD4+ T cells in mesenteric lymph nodes (MLNs) migrate to the bone marrow and promote osteoclast formation, leading to bone loss in a mouse model of ovalbumin-induced food allergy. The study showed that these pathogenic T cells produce elevated levels of IL-4, and blocking IL-4 with monoclonal antibodies reduced bone loss during the early inflammatory phase.

Further research by Nakajima-Adachi has explored how probiotic strains modulate immune function in the gut. In a 2024 study published in Frontiers in Immunology, she collaborated on research showing that orally administered Lactiplantibacillus plantarum OLL2712 decreased intestinal permeability, particularly in the ileum, and helped alleviate obesity-induced inflammation through interactions with gut microbiota.

Another 2025 study in Bioscience of Microbiota, Food and Health found that Lactococcus lactis subsp. cremoris YRC3780 modifies the function of mesenteric lymph node dendritic cells, promoting the differentiation of regulatory T cells and helping to balance immune responses.

Nakajima-Adachi’s research also includes investigations into oral tolerance and allergen reactivity. A 2025 study in the same journal reported that ingestion of egg white after acquiring oral tolerance with heated egg white in OVA-sensitized mice triggered severe allergic symptoms, highlighting the complexity of tolerance induction and maintenance.

Her contributions are reflected in her extensive publication record, with over 55 research works cited more than 560 times according to ResearchGate. She holds an ORCID iD (0000-0003-2008-2501) and is affiliated with the Immunoregulation and Immunobiology Division at the University of Tokyo’s Institute of Medical Science.

Through her interdisciplinary approach linking gastroenterology, immunology, and bone metabolism, Haruyo Nakajima-Adachi continues to advance scientific understanding of how food-induced immune responses can have systemic consequences, offering potential pathways for therapeutic intervention in allergic and inflammatory conditions.

Key Takeaways

• Haruyo Nakajima-Adachi is a Project Associate Professor at the Graduate School of Agricultural and Life Sciences, The University of Tokyo.
• Her research focuses on food allergy, intestinal inflammation, immune responses, and bone loss.
• She has demonstrated that gut-derived T cells can migrate to bone marrow and promote osteoclast formation via IL-4 signaling.
• Probiotic strains such as Lactiplantibacillus plantarum OLL2712 and Lactococcus lactis subsp. cremoris YRC3780 show potential in modulating gut immunity and reducing inflammation.
• Her work has been published in peer-reviewed journals including Mucosal Immunology, Frontiers in Immunology, and Bioscience of Microbiota, Food and Health.

Frequently Asked Questions

What is Haruyo Nakajima-Adachi’s current position?

She is a Project Associate Professor at the Graduate School of Agricultural and Life Sciences, The University of Tokyo.

What are her main research areas?

Her research includes food allergy, aging, immune response, intestinal inflammation, bone loss, microbiota, and food ingredients.

How does her work connect gut immunity to bone health?

Her research shows that in food-allergic models, effector memory CD4+ T cells from mesenteric lymph nodes migrate to the bone marrow, produce IL-4, and stimulate osteoclast formation, leading to bone loss.

Has she studied probiotics for immune modulation?

Yes, she has co-authored studies showing that specific probiotic strains can reduce intestinal permeability, modulate dendritic cell function, and promote regulatory T cell differentiation.

Where can I locate her publications?

Her publications are available through academic databases such as PubMed, ResearchGate, and the University of Tokyo’s research repository, with an ORCID iD of 0000-0003-2008-2501.