The Chemical Composition of Brazilian Green Propolis and Its Protective Effects on Mouse Aortic Endothelial Cells against Inflammatory Injury

Molecules

Xiaoqing Miao¹  Wenchao Yang²  Xiaolan Xu²  Bo Yang³  Yuxuan Zhu³  Danfeng Wang⁴ 

[1]Bee Product Processing and Application Research Center of the Ministry of Education, Fuzhou 350002, China

[2]College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou 350002, China

[3]College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China

[4]College of Plant Protection, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China

关键词: Brazilian green propolis;    chemical composition;    mouse aortic endothelial cells;    anti-inflammatory;   

DOI  :  10.3390/molecules25204612

来源: DOAJ

【 摘 要 】

Propolis has a very complex composition, with antibacterial, anti-inflammatory and other properties. To determine the composition of ethanol extracts of Brazilian green propolis (EEP-B) and their protective effect on mouse aortic endothelial cells (MAECs), the chemical composition of EEP-B was analysed by UPLC/Q-TOF-MS/MS, and the protective effect of EEP-B on the proliferation of lipopolysaccharide (LPS)-induced MAECs was determined by Cell Counting Kit-8 (CCK-8) assays. The protein levels of inflammatory cytokines tumour necrosis factor-α (TNF-α) and interleukin- 6 (IL-6) were measured by enzyme-linked immunosorbent assay (ELISA), and ICAM-1, VCAM-1 and MCP-1 expressions were analysed by western blotting. The results showed that a total of 24 compounds belonging to cinnamic acids and flavonoids, including 3,5-diisopentenyl-4-hydroxycinnamic acid (artepillin C), kaempferide, 3-isoprenyl p-coumaric acid, pinocembrin and 4′-methoxy pinobanksin, were identified in EEP-B. Among them, a new component, suggested to be 5-isoprenyl caffeic acid p-coumaric acid ester, was reported for the first time. The LPS-induced levels of TNF-α, IL-6, ICAM-1, VCAM-1 and MCP-1 were downregulated in response to 5, 10 and 20 μg/mL EEP-B. This study revealed that EEP-B could reduce LPS-induced inflammatory reactions, improve cell survival, and protect MAECs by regulating ICAM-1, VCAM-1 and MCP-1 expression. These findings could provide a theoretical basis for MAEC treatment using EEP-B.

【 授权许可】

Unknown