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Abstract Title:

Myricetin Inhibits Breast Tumor Growth and Angiogenesis by Regulating VEGF/VEGFR2 and p38MAPK Signaling Pathways.

Abstract Source:

Anat Rec (Hoboken). 2019 Jul 2. Epub 2019 Jul 2. PMID: 31266091

Abstract Author(s):

Zhiqing Zhou, Wenli Mao, Yuanyuan Li, Cuiling Qi, Yanli He

Article Affiliation:

Zhiqing Zhou

Abstract:

Tumor angiogenesis is an important cause of tumor growth and metastasis. Myricetin is a flavonoid component used in traditional Chinese medicine that has been demonstrated to have anticancer activity. However, to the best of our knowledge, the effect of myricetin on tumor angiogenesis remains unknown. The present study reports the identification of myricetin as a potential chemopreventive agent by reason of its inhibition of tumor angiogenesis and demonstrates the anticancer effects of myricetin in vivo. Cell Counting Kit-8 assays revealed that myricetin inhibits the proliferation of tumor cells but not that of human umbilical vein endothelial cells (HUVECs), and a transwell assay demonstrated that myricetin could inhibit the migration of HUVECs. A rat aortic ring assay revealed that myricetin could also affect the development of microvessels and the formation of vascular networks. Further, an ELISA showed that myricetin reduced the levels of vascular endothelial growth factor (VEGF) in vivo and in vitro. Western blot analysis indicated that myricetin could downregulate VEGFR2 and p38MAPK. Therefore, myricetin could significantly inhibit tumor angiogenesis and has potential as a chemopreventive agent because of its inhibition to angiogenesis. Anat Rec, 2019.© 2019 Wiley Periodicals, Inc.

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