Multi-omic and spatial transcriptomic profiling of human trigeminal ganglia
Editor’s note: The research described below comes from a recipient of a 2026 MSC Travel Grant supporting travel to the 68th Annual Scientific Meeting of the American Headache Society. These grants reimburse travel expenses for those who have had their abstract for a presentation or poster accepted at a meeting.
By Evangelia Semizoglou, PhD, postdoc, Brigham & Women’s Hospital.
What is the research gap that your study addresses?
The study addresses the lack of detailed understanding of the neuronal-specific transcriptomic and epigenetic complexity in the human trigeminal ganglion (TG). Previous studies relied on bulk sequencing, which overrepresents non-neuronal cells because neurons are relatively rare, making it difficult to analyze neuronal gene expression and regulation accurately.
What is your research hypothesis?
Enriching neuronal cells from human TG samples and applying multi-omic and spatial transcriptomic approaches will reveal previously unresolved neuronal gene expression patterns, epigenomic features, and spatial organization, which are relevant to migraine mechanisms and could uncover therapeutic targets.
What methodology did you use to address your research hypothesis?
–Developed a standardized tissue procurement and processing pipeline for postmortem human TG samples
–Enriched samples specifically for neuronal cells
–Applied multi-omic sequencing
–Performed cross-species comparative analysis
–Used spatial transcriptomics techniques
What are the main results of your study?
–Identified evolutionarily conserved epigenomic features
–Characterized cell-type-specific gene regulatory programs
–Resolved the spatial distribution of neuronal and non-neuronal cells based on receptor and ion channel expression
What conclusions did you reach based on your results?
The study demonstrates that the pipeline enables detailed characterization of neuronal populations in the TG, including their molecular and spatial features, which can facilitate the discovery of new therapeutic targets for migraine and facial pain.
What are the limitations of your study?
–Use of postmortem human tissue, which may affect RNA quality and cellular states
–Potential sampling bias despite enrichment methods
–Findings may require functional validation to confirm biological relevance
–Spatial and multi-omic techniques may still have resolution or coverage constraints
What is the relevance of your study to migraine?
Migraine involves activation of trigeminal sensory neurons. By uncovering the molecular, epigenetic, and spatial characteristics of these neurons, the study provides insights into migraine susceptibility mechanisms and helps identify novel drug targets for more effective treatments.