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Home > Literature List > Licochalcone A-Induced Apoptosis Through the Activation of p38MAPK Pathway Mediated Mitochondrial Pathways of Apoptosis in Human Osteosarcoma Cells In Vitro and In Vivo

Licochalcone A-Induced Apoptosis Through the Activation of p38MAPK Pathway Mediated Mitochondrial Pathways of Apoptosis in Human Osteosarcoma Cells In Vitro and In Vivo

Journal name:cells
Literature No.:
Literature Url: http://scholar.google.com/scholar_url?url=https://www.mdpi.com/2073-4409/8/11/1441/pdf&hl=zh-CN&sa=X&d=8715904676977991588&scisig=AAGBfm3kJCm8xSXwFcHaO6mqBHB7I95Czw&nossl=1&oi=scholaralrt&hist=P1l9U8wAAAAJ:6061410958341296950:AAGBfm1SMj-qIFykR7xxSgbekTZuDQdibA
Date publication:14 November 2019
Abstract: Background: Licochalcone A (LicA) is isolated from the roots of Glycyrrhiza glabra and possesses antitumor and anti-invasive activities against several tumor cells. However, the antitumor effects of LicA on human osteosarcoma cells have yet to be demonstrated either in vitro or in vivo. Methods: Cell viability was measured by MTT assay. Apoptosis and mitochondrial dysfunction were detected with Annexin V/PI staining and JC-1 staining by flow cytometry. The expressions of caspase- or mitochondrial-related proteins were demonstrated by western blotting. Antitumor effect of LicA on 143B xenograft mice in vivo. Results: LicA could inhibit cell proliferation and induce apoptosis in human osteosarcoma cells, as evidenced by a decrease in cell viability, loss of mitochondrial membrane potentials, and activation of caspases. LicA treatment substantially reduced the expression of Bcl-2 and Mcl-1 and increased the expression of cleaved-caspase-3, cleaved-caspase-9, cleaved-PARP, and Bax in HOS and U2OS cells. Moreover, mitochondrial membrane potential and apoptosis suppression mediated by Z-VAD or tauroursodeoxycholic acid significantly reduced LicA-induced mitochondria-dependent apoptosis. The study also determined that LicA treatment induced p38MAPK phosphorylation, but siRNA-p38 or BIRB796 substantially reversed cell viability through the inhibition of mitochondria-dependent apoptosis pathways. Finally, an in vivo study revealed that LicA significantly inhibited 143B xenograft tumor growth. Conclusions: These findings demonstrate that LicA has antitumor activities against human osteosarcoma cells through p38MAPK regulation of mitochondria-mediated intrinsic apoptotic pathways in vitro and in vivo. Keywords: LicA; osteosarcoma cells; MMPs; apoptosis; p38MAPK 

… xenograft osteosarcoma models. 2. Materials and Methods 2.1. Chemical Reagents and LicA (BP0855) was purchased from Chengdu Biopurify Phytochemicals Ltd. (Chengdu, China). Primary antibodies against p … 
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