Abstract Title:

Paclitaxel-sensitization enhanced by curcumin involves down-regulation of nuclear factor-κB and Lin28 in Hep3B cells.

Abstract Source:

J Recept Signal Transduct Res. 2015 Jun 25:1-8. Epub 2015 Jun 25. PMID: 26108226

Abstract Author(s):

Mingjie Zhou, Zhaohui Li, Ziwu Han, Nan Tian

Article Affiliation:

Mingjie Zhou


Although paclitaxel is an effective chemotherapeutic drug used in the treatment of many tumors, hepatoma cells, in particular, are known to be highly resistant to it. Previously, we discovered that Lin28 was closely associated with resistance to paclitaxel in Hep3B cells. The nuclear factor-kappa B (NF-κB) transcription factor, which plays an important role in tumor survival, directly activates Lin28 expression through a binding site on the first intron. Curcumin, a non-toxic anti-inflammatory agent, inhibits NF-κB activity in vitro. In this study, we reported that a combination of curcumin andpaclitaxel exhibited synergistic anti-proliferative and pro-apoptosis effects on Hep3B cells, and curcumin down-regulated paclitaxel-induced enhanced expression of Lin28 and NF-κB activation. Furthermore, our results revealed that curcumin reduced Lin28 levels via mechanisms directly mediated by inhibition of NF-κB activity. These mechanism-based observations evidence that curcumin enhances the sensitivity of hepatoma cells to paclitaxe, and strongly support the notion that paclitaxel in combination with curcumin may provide a superior therapeutic index for HCC chemotherapy.

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