Anti-angiogenic activity and mechanism of fucoidan from brown algae, Sargassum Naozhouense mediated by intracellular antioxidation
文献类型： 外文期刊
作者： Yang, Shengtao 1 ; Liu, Yi 1 ; Pei, Yu 1 ; Qian, Zhong-Ji 1 ;
作者机构： 1.Guangdong Ocean Univ, Sch Chem & Environm, Zhanjiang 524088, Peoples R China
2.Chinese Acad Trop Agr Sci, Minist Agr & Rural Affairs, Agr Prod Proc Res Inst, Key Lab Trop Crop Prod Proc, Zhanjiang 524001, Guangdong, Peoples R China
关键词： Sargassum Naozhouense; Fucoidan; Antioxidant; Anti-angiogenic activity
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.5； 五年影响因子：8.7 ）
ISSN： 0141-8130
年卷期： 2025 年 293 卷
页码：
收录情况： SCI
摘要： Fucoidan has various physiological activities, and its structure is also different according to different brown algae. In this study SNF (Sargassum Naozhouense fucoidan) was extracted by acid extraction method, and its relative molecular weight was determined to be 631.40 kDa. The structure contains 42 % hydroxyl with sulfate group, and it is mainly composed of fucose, galactose and xylose. In the activity study, intracellular oxidative stress is closely related to angiogenesis. The results show that SNF could ameliorate cellular oxidative stress injury by inhibiting the production of intracellular reactive oxygen species (ROS), nitric oxide (NO) and DNA damage in HepG2/CYP2E1 cell. In addition, SNF can reduce the activity of Matrix Metallopeptidase (MMP-2/9), and inhibit hypoxia-inducible factor-1 alpha (HIF-1 alpha) expression by regulating the downstream PI3K/AKT and Ras/ MAPK pathways, thereby preventing vascular endothelial growth factor (VEGF) production, and further inhibits VEGF receptor-2 activation and ultimately inhibits angiogenesis in HT1080 and HUVECs. Therefore, SNF has the potential to develop tumor prevention functional substances and can provide theoretical basis for the high-value comprehensive utilization of brown algae.
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