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Article Publish Status: FREE
Abstract Title:

Nobiletin Inhibits CD36-Dependent Tumor Angiogenesis, Migration, Invasion, and Sphere Formation Through the Cd36/Stat3/Nf-Κb Signaling Axis.

Abstract Source:

Nutrients. 2018 Jun 15 ;10(6). Epub 2018 Jun 15. PMID: 29914089

Abstract Author(s):

Nipin Sp, Dong Young Kang, Doh Hoon Kim, Jong Hwan Park, Hyo Gun Lee, Hye Jee Kim, Pramod Darvin, Yeong-Min Park, Young Mok Yang

Article Affiliation:

Nipin Sp

Abstract:

Targeted cancer therapy with natural compounds is more effective than nontargeted therapy. Nobiletin is a flavonoid derived from citrus peel that has anticancer activity. Cluster of differentiation 36 (CD36) is a member of the class B scavenger receptor family that is involved in importing fatty acids into cells. CD36 plays a role in tumor angiogenesis by binding to its ligand, thrombospondin-1 (TSP-1), and then interacting with transforming growth factor beta 1 (TGFβ1). CD36 is implicated in tumor metastasis through its roles in fatty acid metabolism. This study investigated the molecular mechanisms underlying nobiletin's anticancer activity by characterizing its interactions with CD36 as the target molecule. We hypothesize that the anti-angiogenic activity of nobiletin involving its regulation of CD36 via signal transducer and activator of transcription 3 (STAT3) rather than through TSP-1. Gene analysis identified a Gamma interferon activation site (GAS) element in the CD36 gene promoter that acts as a STAT3 binding site, an interaction that was confirmed by ChIP assay. STAT3 interacts with nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), suggesting that nobiletin also acts through the CD36/ (STAT3)/NF-κB signaling axis. Nobiletin inhibited CD36-dependent breast cancer cell migration and invasion as well as CD36-mediatedtumor sphere formation. Taken together, these results suggest that nobiletin inhibits cancer stem cells in multiple ways.

Study Type : In Vitro Study

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Sayer Ji
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