Article Publish Status: FREE
Abstract Title:

6-Methoxymellein Isolated from Carrot (L.) Targets Breast Cancer Stem Cells by Regulating NF-κB Signaling.

Abstract Source:

Molecules. 2020 Sep 23 ;25(19). Epub 2020 Sep 23. PMID: 32977636

Abstract Author(s):

Ren Liu, Hack Sun Choi, Su-Lim Kim, Ji-Hyang Kim, Bong-Sik Yun, Dong-Sun Lee

Article Affiliation:

Ren Liu


The presence of breast cancer stem cells (BCSCs) induces the aggressive progression and recurrence of breast cancer. These cells are drug resistant, have the capacity to self-renew and differentiate and are involved in recurrence and metastasis, suggesting that targeting BCSCs may improve treatment efficacy. In this report, methanol extracts of carrot root were purified by means of silica gel, Sephadex LH-20, and preparative high-performance liquid chromatography to isolate a compound targeting mammosphere formation. We isolated the compound 6-methoxymellein, which inhibits the proliferation and migration of breast cancer cells, reduces mammosphere growth, decreases the proportion of CD44/CD24cells in breast cancer cells and decreases the expression of stemness-associated proteins c-Myc, Sox-2 and Oct4. 6-Methoxymellein reduces the nuclear localization of nuclear factor-κB (NF-κB) subunit p65 and p50. Subsequently, 6-methoxymellein decreases the mRNA transcription and secretion of IL-6 and IL-8. Our data suggest that 6-methoxymellein may be an anticancer agent that inhibits BCSCs via NF-κB/IL-6 and IL-8 regulation.

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