Adolescent THC Disrupts Brain Cell Migration in a Psychiatric Risk Model
Adolescent THC exposure combined with genetic psychiatric risk (Reelin deficiency) disrupted neuroblast migration programs in the nucleus accumbens, potentially impairing GABAergic circuit maturation.
Quick Facts
What This Study Found
Single-nucleus RNA sequencing identified a gene co-expression network affected by both Reelin genotype and THC, enriched in psychiatric disorder genes and expressed in GABAergic neuroblasts. These neuroblasts actively migrate during adolescence and receive cues from cannabinoid receptor-expressing interneurons, revealing a mechanism for gene-environment interaction in psychosis risk.
Key Numbers
Identified gene network enriched in human psychiatric disorder genes. Neuroblasts actively migrated in adolescent NAc but declined with age. Cholecystokinin interneurons with high CB1 expression provided migratory cues.
How They Did This
Single-nucleus RNA sequencing of nucleus accumbens in Reelin haploinsufficient mice with adolescent THC exposure, combined with cell-to-cell communication analysis and migration assays across development.
Why This Research Matters
This provides a molecular explanation for why adolescent cannabis use increases psychiatric risk — THC disrupts the migration of specific brain cells during a critical developmental window, and genetic vulnerability amplifies this effect.
The Bigger Picture
The gene-environment interaction between cannabis and psychiatric risk has been observed epidemiologically but lacked a molecular mechanism. This study fills that gap by showing how THC disrupts a specific developmental process in genetically vulnerable individuals.
What This Study Doesn't Tell Us
Mouse model with a single genetic risk factor — human psychiatric vulnerability is polygenic. Single-nucleus sequencing provides a snapshot, not a timeline. Reln haploinsufficiency is one of many risk models.
Questions This Raises
- ?Could genetic screening identify adolescents at highest risk for cannabis-induced psychiatric effects?
- ?Is the critical window for neuroblast migration vulnerability the same in humans as mice?
Trust & Context
- Key Stat:
- Evidence Grade:
- Cutting-edge single-nucleus transcriptomics providing novel mechanistic insights, but single genetic model in mice limits direct clinical translation.
- Study Age:
- Recent study using state-of-the-art single-cell methods to reveal how adolescent cannabis interacts with genetic risk at the molecular level.
- Original Title:
- Single-Nucleus Transcriptomics Identifies Neuroblast Migration Programs Sensitive to Reelin and Cannabis in the Adolescent Nucleus Accumbens.
- Published In:
- bioRxiv : the preprint server for biology (2025)
- Authors:
- Zuo, Yanning(2), Formoli, Numaan, Libster, Avraham, Sun, Daimeng, Turner, Andrew, Iemolo, Attilio, Telese, Francesca
- Database ID:
- RTHC-08055
Evidence Hierarchy
Frequently Asked Questions
Why is teen cannabis use especially risky?
This study shows the adolescent brain has actively migrating cells (neuroblasts) that receive signals from cannabinoid receptors. THC disrupts this migration, potentially permanently impairing brain circuit development.
Does genetics affect cannabis risk?
Yes — mice with a genetic risk factor for psychiatric disorders were more affected by adolescent THC exposure, suggesting that genetic background influences how vulnerable someone is to cannabis's developmental effects.
Read More on RethinkTHC
Cite This Study
https://rethinkthc.com/research/RTHC-08055APA
Zuo, Yanning; Formoli, Numaan; Libster, Avraham; Sun, Daimeng; Turner, Andrew; Iemolo, Attilio; Telese, Francesca. (2025). Single-Nucleus Transcriptomics Identifies Neuroblast Migration Programs Sensitive to Reelin and Cannabis in the Adolescent Nucleus Accumbens.. bioRxiv : the preprint server for biology. https://doi.org/10.1101/2025.04.03.646846
MLA
Zuo, Yanning, et al. "Single-Nucleus Transcriptomics Identifies Neuroblast Migration Programs Sensitive to Reelin and Cannabis in the Adolescent Nucleus Accumbens.." bioRxiv : the preprint server for biology, 2025. https://doi.org/10.1101/2025.04.03.646846
RethinkTHC
RethinkTHC Research Database. "Single-Nucleus Transcriptomics Identifies Neuroblast Migrati..." RTHC-08055. Retrieved from https://rethinkthc.com/research/zuo-2025-singlenucleus-transcriptomics-identifies-neuroblast
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.