Cannabidiol and fluorinated derivative anti-cancer properties against glioblastoma multiforme cell lines, and synergy with imidazotetrazine agents

Brookes, Alice; Kindon, Nicholas; Scurr, David J.; Alexander, Morgan R.; Gershkovich, Pavel; Bradshaw, Tracey

Abstract

Background
Glioblastoma multiforme (GBM) is an aggressive cancer with poor prognosis, partly due to resistance to the standard chemotherapy treatment, temozolomide (TMZ). Phytocannabinoid cannabidiol (CBD) has exhibited anti-cancer effects against GBM, however, CBD’s ability to overcome common resistance mechanisms to TMZ have not yet been investigated. 4’-Fluoro-cannabidiol (4’-F-CBD, or HUF-101/PECS-101) is a derivative of CBD, that exhibits increased activity compared to CBD during in vivo behavioural studies.

Methods
This anti-cancer activity of cannabinoids against GBM cells sensitive to and representing major resistance mechanisms to TMZ was investigated. Cannabinoids were also studied in combination with imidazotetrazine agents, and advanced mass spectrometry with the 3D OrbiSIMS was used to investigate the mechanism of action of CBD.

Results
CBD and 4’-F-CBD were found to overcome two major resistance mechanisms (methylguanine DNA-methyltransferase (MGMT) overexpression and DNA mismatch repair (MMR)-deficiency). Synergistic responses were observed when cells were exposed to cannabinoids and imidazotetrazine agents. Synergy increased with T25 and 4’-F-CBD. 3D OrbiSIMS analysis highlighted the presence of methylated-DNA, a previously unknown anti-cancer mechanism of action of CBD.

Conclusions
This work demonstrates the anti-cancer activity of 4’-F-CBD and the synergy of cannabinoids with imidazotetrazine agents for the first time and expands understanding of CBD mechanism of action.

Citation

Brookes, A., Kindon, N., Scurr, D. J., Alexander, M. R., Gershkovich, P., & Bradshaw, T. (2024). Cannabidiol and fluorinated derivative anti-cancer properties against glioblastoma multiforme cell lines, and synergy with imidazotetrazine agents. BJC Reports, 2, Article 67. https://doi.org/10.1038/s44276-024-00088-0

• Journal Article Type: Article
• Acceptance Date: Aug 6, 2024
• Online Publication Date: Sep 9, 2024
• Publication Date: Sep 9, 2024
• Deposit Date: Aug 14, 2024
• Publicly Available Date: Sep 11, 2024
• Journal: BJC Reports
• Electronic ISSN: 2731-9377
• Publisher: Springer Nature
• Peer Reviewed: Peer Reviewed
• Volume: 2
• Article Number: 67
• DOI: https://doi.org/10.1038/s44276-024-00088-0
• Public URL: https://nottingham-repository.worktribe.com/output/38375787
• Publisher URL: https://www.nature.com/articles/s44276-024-00088-0
• Additional Information: Received: 20 November 2023; Revised: 22 July 2024; Accepted: 6 August 2024; First Online: 9 September 2024; : The authors declare no competing interests.; : Not applicable.