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Food Science and Biotechnology
→ Food Science and Biotechnology 2021 ; 30(12): 1543-1553
DHA-enriched phosphatidylcholine suppressed angiogenesis by activating PPARγ and modulating the VEGFR2/Ras/ERK pathway in human umbilical vein endothelial cells
Yuanyuan Liu1 • Yingying Tian1 • Yao Guo1 • Ziyi Yan1 • Changhu Xue1,2 • Jingfeng Wang1
1 College of Food Science and Engineering, Ocean University of China, Qingdao, China 2 Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology, Qingdao, China
ABSTRACT
Docosahexaenoic acid-enriched phosphatidylcholine (DHA-PC) is a new generation of omega-3 lipids, which contains an ester bond linking DHA at the sn-2 position of phospholipid. DHA-PC has become the interest recently as its better bioavailability and anti-oxidation capacity. In this study, the anti-angiogenic effect of DHAPC was evaluated. The capacities of proliferation, migration, tube formation of human umbilical vein endothelial cells were significantly declined after DHA-PC treatment. Furthermore, DHA-PC inhibited the neovascularization of the chick chorioallantoic membrane in vivo. Mechanism results indicated that DHA-PC enhances the expression of peroxisome proliferator-activated receptor γ (PPARγ) at transcriptional and translational level, subsequently downregulates the VEGFR2 expression and VEGFR2-mediated downstream Ras/ERK pathway, resulting in significant reduction in proliferation and differentiation. Additionally, PPARγ-specific antagonist GW9662 partly reversed the inhibition effects of DHA-PC on tube formation and neovascularization, suggesting that DHA-PC exerts anti-angiogenesis effect through activating PPARγ. These findings indicated that DHA-PC has a great prospect of anti-tumor angiogenesis therapy.
KEYWORD
DHA-PC · Angiogenesis · Tube formation · Neovascularization · PPARγ
Food Science and Biotechnology 2021 ; 30(12): 1543-1553
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