Graduate School of Medicine Associate Professor
kyoto-u.ac.jp<Research Experience>
RIKEN Center for Integrative Medical Sciences, Laboratory for Transcriptional Regulation
I devoted myself to elucidating the "fundamental principles of gene expression control"—understanding how the genomic blueprint is decoded to construct sophisticated biological systems. Under the mentorship of Team Leader Dr. Ichiro Taniuchi, I focused on the functional analysis of transcription factor complexes and the dynamics of higher-order chromatin structures. Through this work, I successfully described the molecular processes governing differentiation commitment into specific cell lineages (such as T cells). During this period, I established a research style that highly integrates biochemical experimentation (Wet), such as protein-DNA interaction analysis, with bioinformatics analysis (Dry), including ChIP-seq and ATAC-seq. This technical foundation, which enables the comprehensive, end-to-end analysis of multi-layered omics data—ranging from transcriptional networks and signal transduction to epigenetic regulation—remains the core of my current research.
Nagoya University Graduate School of Medicine, Department of Immunology
Building upon the biochemical and molecular biological techniques cultivated at RIKEN, I expanded my research scope to address "the dysregulation of molecular mechanisms in disease." In the laboratory of Prof. Hiroyoshi Nishikawa, I analyzed the mechanisms of cellular dysfunction (exhaustion) within the cancer microenvironment from the perspectives of metabolism, signal transduction, and transcriptional regulation. Furthermore, based on the unique concept of "neuro-immune crosstalk" that emerged during my research, I launched and served as the Unit Leader for an "Interdisciplinary Research Unit" (supported by the MEXT Program for Promoting the Enhancement of Research Universities). leading the creation of a new academic field by combining classical biochemical methods with cutting-edge genetic engineering to foster interdisciplinary fusion.
<Current Research>
Kyoto University Graduate School of Medicine, Center for Cancer Immunotherapy and Immunobiology (CCII), Division of Cancer Immune Multicellular System Regulation
https://www.ccii.med.kyoto-u.ac.jp/research/divisions-labs/division-of-cancer-immune-multicellular-system-regulation/
Currently at Kyoto University, I am analyzing the interaction of signal transduction molecules exchanged between cancer cells, immune cells, and neurons, as well as the downstream transcriptional reprogramming mechanisms, from the perspectives of biochemistry and molecular cell biology. My goal is to achieve a quantitative understanding of the behavior of individual molecules within complex tissue environments.
Kyoto University / JST FOREST Program (Shiomi Panel) Principal Investigator
https://www.jst.go.jp/souhatsu/research/panel_shiomi.html
Under the JST FOREST Program (Souhatsu), I am pursuing the "Elucidation of the Molecular Entity and Function of Transcription Factories via Locus-Specific Analysis." I aim to uncover the molecular basis of the "transcription factory" hypothesis, where multiple genes gather in specific nuclear regions to undergo efficient transcriptional regulation. The core of this research lies in the use of Locus-specific chromatin immunoprecipitation to "biochemically isolate" transcription complexes formed at specific genomic regions. This approach enables the comprehensive identification and quantification of protein groups accumulated at specific gene loci (local environments), overcoming the limitations of averaged data provided by conventional ChIP-seq. Using mouse immune cells as a model, I aim to reveal the protein interactome constituting transcription factories and establish the "local molecular rules" governing gene expression control.
<Main research tools>
I approach the analysis of the molecular basis of biological phenomena by fusing biochemistry, molecular biology, immunology, and bioinformatics. I possess particular strength in technologies that elucidate the molecular environment of specific genomic regions.
> Locus-Specific Analysis: Isolation of specific genomic regions via Locus-specific chromatin immunoprecipitation.
> Biochemistry & Protein Analysis: Western Blotting, ELISA, Immunoprecipitation (IP), and intracellular signal analysis via Flow Cytometry.
> Genome & Epigenome Analysis: Comprehensive analysis using Next-Generation Sequencing (RNA-seq, scRNA-seq, ChIP-seq, ATAC-seq) and Bioinformatics.
> Nuclear Structure & Chromatin Analysis: 3C (Chromosome Conformation Capture), Hi-C.
> Developmental Engineering: Generation and phenotypic analysis of genetically modified mice.