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Article Publish Status: FREE
Abstract Title:

Licochalcone-A induces intrinsic and extrinsic apoptosis via ERK1/2 and p38 phosphorylation-mediated TRAIL expression in head and neck squamous carcinoma FaDu cells.

Abstract Source:

Food Chem Toxicol. 2015 Mar ;77:34-43. Epub 2015 Jan 5. PMID: 25572524

Abstract Author(s):

Mi-Ra Park, Su-Gwan Kim, In-A Cho, Dahye Oh, Kyeong-Rok Kang, Sook-Young Lee, Sung-Min Moon, Seung Sik Cho, Goo Yoon, Chun Sung Kim, Ji-Su Oh, Jae-Seek You, Do Kyung Kim, Yo-Seob Seo, Hee-Jeong Im, Jae-Sung Kim

Article Affiliation:

Mi-Ra Park

Abstract:

We investigated Licochalcone-A (Lico-A)-induced apoptosis and the pathway underlying its activity in a pharyngeal squamous carcinoma FaDu cell line. Lico-A purified from root of Glycyrrhiza inflata had cytotoxic effects, significantly increasing cell death in FaDu cells. Using a cell viability assay, we determined that the IC50 value of Lico-A in FaDu cells was approximately 100 µM. Chromatin condensation was observed in FaDu cells treated with Lico-A for 24 h. Consistent with this finding, the number of apoptotic cells increased in a time-dependent manner when FaDu cells were treated with Lico-A. TRAIL was significantly up-regulated in Lico-A-treated FaDu cells in adose-dependent manner. Apoptotic factors such as caspases and PARP were subsequently activated in a caspase-dependent manner. In addition, levels of pro-apoptotic factors increased significantly in response to Lico-A treatment, while levels of anti-apoptotic factors decreased. Lico-A-induced TRAIL expression was mediated in part by a MAPK signaling pathway involving ERK1/2 and p38. In xenograft mouse model, Lico-A treatment effectively suppressed the growth of FaDu cell xenografts by activating caspase-3, without affecting the body weight of mice. Taken together, these data suggest that Lico-Ahas potential chemopreventive effects and should therefore be developed as a chemotherapeutic agent for pharyngeal squamous carcinoma.

Study Type : In Vitro Study

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