Chemical constituents of industrial hemp roots and their anti-inflammatory activities

Journal of Cannabis Research

Brief Research Report

Huifang Li¹  Navindra P. Seeram¹  Hang Ma¹  Huihao Zhou²  Shijie Huang²  Qiong Gu²  Jun Xu² 

[1] Bioactive Botanical Research Laboratory, Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, 02881, Kingston, RI, USA;Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, 510006, Guangzhou, China;

关键词: Hemp;    Cannabis sp;    Cannabinoids;    Inflammasome;   

DOI  :  10.1186/s42238-022-00168-3

 received in 2022-06-13, accepted in 2022-11-04,  发布年份 2022

来源: Springer

【 摘 要 】

ObjectiveAlthough the chemical constituents of the aerial parts of Cannabis have been extensively studied, phytochemicals of Cannabis roots are not well characterized. Herein, we investigated the chemical constituents of industrial hemp (Cannabis sativa L.) roots and evaluated the anti-inflammatory activities of phytochemicals isolated from the hemp roots extract.MethodsAn ethyl acetate extract of hemp roots was subjected to a combination of chromatographic columns to isolate phytochemicals. The chemical structures of the isolates were elucidated based on spectroscopic analyses (by nuclear magnetic resonance and mass spectrometry). The anti-inflammatory effects of phytochemicals from hemp roots were evaluated in an anti-inflammasome assay using human monocyte THP-1 cells.ResultsPhytochemical investigation of hemp roots extract led to the identification of 32 structurally diverse compounds including six cannabinoids (1–6), three phytosterols (26–28), four triterpenoids (22–25), five lignans (17–21), and 10 hydroxyl contained compounds (7–16), three fatty acids (29–31), and an unsaturated chain hydrocarbon (32). Compounds 14–21, 23, 27, and 32 were identified from the Cannabis species for the first time. Cannabinoids (1–5) reduced the level of cytokine tumor necrosis-alpha (by 38.2, 58.4, 47.7, 52.2, and 56.1%, respectively) and 2 and 5 also decreased the interleukin-1β production (by 42.2 and 92.4%, respectively) in a cell-based inflammasome model. In addition, non-cannabinoids including 11, 13, 20, 25, 29, and 32 also showed selective inhibition of interleukin-1β production (by 23.7, 22.5, 25.6, 78.0, 24.1, 46.6, and 25.4%, respectively) in THP-1 cells.ConclusionThe phytochemical constituent of a hemp roots extract was characterized and compounds from hemp roots exerted promising anti-inflammatory effects.

【 授权许可】

CC BY   
© The Author(s) 2023

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