Division of Neuroimmunology
Projects
The central nervous system (CNS) is modulated by peripheral factors, including blood metabolites and gut microbiota. Recent research has emphasized the concept of peripheral–central communication as a novel and promising framework for understanding brain function. Our division focuses on the peripheral immune system and how its dysregulation contributes to the pathophysiology of neuropsychiatric disorders with high unmet medical needs such as major depressive disorder, schizophrenia, and multiple sclerosis. Our research encompasses the full spectrum from mechanistic studies to the identification of biomarkers and therapeutic targets, with a strong emphasis on translational approaches. Based on our findings, we have secured multiple intellectual property rights and aim to leverage these discoveries for the development of innovative therapeutics and university-based startups—ultimately striving to deliver tangible benefits to patients.
Members
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Kazuo Kunisawa Associate Professor
Dr. Kunisawa investigates the molecular mechanisms of peripheral–central communication, with a focus on the functional analysis of peripheral immune cells and gut microbiota. His research centers on the discovery of therapeutic targets and biomarkers for neuropsychiatric disorders, and contributing to intellectual property development for the advancement of academic entrepreneurship.
Main publications
- Tanabe M, Kunisawa K#, Saito I, Kosuge A, Tezuka H, Kawai T, Kon Y, Yoshidomi K, Kagami A, Hasegawa M, Kubota H, Ojika H, Fujii T, Tochio T, Hirooka Y, Saito K, Nabeshima T, Mouri A#. Adolescent social isolation decreases colonic goblet cells and impairs spatial cognition through the reduction of cystine. Mol Psychiatry. 30(5):2137-2151, 2025. (#corresponding author)
- Hasegawa M, Kunisawa K, Wulaer B, Kubota H, Kurahashi H, Sakata T, Ando H, Fujigaki S, Fujigaki H, Yamamoto Y, Nagai T, Saito K, Nabeshima T, Mouri A. Chronic stress induces behavioural changes through increased kynurenic acid by downregulation of kynurenine-3-monooxygenase with microglial decline. Br J Pharmacol. 182(7):1466-1486, 2025.
- Kurahashi H, Kunisawa K, Tanaka KF, Kubota H, Hasegawa M, Miyachi M, Moriya Y, Hasegawa Y, Nagai T, Saito K, Nabeshima T, Mouri A. Autism spectrum disorder-like behaviors induced by hyper-glutamatergic NMDA receptor signaling through hypo-serotonergic 5-HT1A receptor signaling in the prefrontal cortex in mice exposed to prenatal valproic acid. Neuropsychopharmacology. 50(5):739-750, 2025.
- Kunisawa K#, Hara M, Yoshidomi K, Kon Y, Yamamoto Y, Fujigaki S, Wulaer B, Kosuge A, Tanabe M, Saitoh S, Takahashi K, Saito K, Nabeshima T, Mouri A#. Ido2 Deficiency Exacerbates Motor Impairment and Reduces Aryl Hydrocarbon Receptor Activity through Decreased Kynurenine in a Chronic Demyelinating Mouse Model. Mol Neurobiol. 62(1):109-122, 2025. (#corresponding author)
- Kosuge A*, Kunisawa K*, Arai S, Sugawara Y, Shinohara K, Iida T, Wulaer B, Kawai T, Fujigaki H, Yamamoto Y, Saito K, Nabeshima T, Mouri A. Heat-sterilized Bifidobacterium breve prevents depression-like behavior and interleukin-1β expression in mice exposed to chronic social defeat stress. Brain Behav Immun. 96:200-211, 2021. (*co-first author)
Information
Division of Neuroimmunology(Department of Regulatory Science for Evaluation and Development of Pharmaceuticals and Devices, Graduate School of Medical Sciences)
【Address】
#102, 10th building, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
【Contact】
E-mail:kunisawa(at)yahoo.co.jp
※ Please replace “(at)” with “@”.