CBD prevented colorectal adenoma formation in two mouse models by blocking the generation of myeloid-derived suppressor cells, enabling stronger anti-tumor immune responses.
Cancer researchers, people interested in CBD and cancer prevention, and immunotherapy researchers.
CBD prevented colorectal adenomas in 2 mouse models
What the researchers found
CBD prevented colorectal adenomas in both AOM/DSS and high-fat diet Apcmin/+ mouse models by binding to EEF1B2, inhibiting C/EBPb protein synthesis, and suppressing MDSC generation. This restored T-cell activation against developing tumors.
Why it matters
Colorectal cancer develops from adenomas over years, making early intervention critical. This study identifies a specific molecular mechanism by which CBD could prevent precancerous growths through immune system modulation, not direct tumor cell killing.
The numbers in context
CBD significantly decreased MDSC numbers in both colorectal adenoma models. CBD bound to the guanine nucleotide exchange factor domain of EEF1B2, disrupting translational elongation and C/EBPb synthesis. Enhanced T-cell activation was observed following MDSC suppression.
How the study worked
Two established colorectal adenoma mouse models were used. Single-cell RNA sequencing identified immune environment changes. Target-responsive accessibility profiling identified EEF1B2 as CBD's binding target. Multiple immunology and molecular biology experiments confirmed the mechanism.
What this study cannot tell us
Mouse models only. The specific doses and routes of CBD administration in mice may not translate to achievable human concentrations. The Apcmin/+ model has a specific genetic mutation not present in all human colorectal cancers.
How to read the evidence
Published in Journal for Immunotherapy of Cancer with two independent animal models and thorough mechanistic work including single-cell sequencing.
When this study was published
2026 study.
The bigger picture
MDSCs are a major obstacle to cancer immunotherapy across many tumor types. If CBD can suppress MDSC generation at the adenoma stage, it could potentially complement existing cancer prevention strategies, though this remains far from proven in humans.
Questions still open
- What oral CBD doses would be needed to achieve similar MDSC suppression in humans? Could this mechanism work alongside existing colorectal cancer screening and prevention strategies?
Common questions
Can CBD prevent colon cancer?
How did CBD work against the precancerous growths?
Read the original research
Cannabidiol suppresses emergency MDSCs generation by disturbing EEF1B2-mediated C/EBPβ protein synthesis in colorectal adenomas.
Journal for immunotherapy of cancer, 14(1)
Citation
Pan, Jie; Zhao, Lixin; Du, Haojie; Zhu, Yuyu; Sun, Xiaofan; Xu, Qiang; Cheng, Haibo; Chen, Hongqi; Sun, Yang. (2026). Cannabidiol suppresses emergency MDSCs generation by disturbing EEF1B2-mediated C/EBPβ protein synthesis in colorectal adenomas.. Journal for immunotherapy of cancer, 14(1). https://doi.org/10.1136/jitc-2025-013081
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