Parthenolide sensitizes hepatocellular carcinoma cells to trail by inducing the expression of death receptors through inhibition of STAT3 activation†‡
Daniela Carlisi
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorAntonella D'Anneo
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorLiliana Angileri
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorMarianna Lauricella
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorSonia Emanuele
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorAndrea Santulli
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorRenza Vento
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorCorresponding Author
Giovanni Tesoriere
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo 90127, Italy.Search for more papers by this authorDaniela Carlisi
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorAntonella D'Anneo
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorLiliana Angileri
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorMarianna Lauricella
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorSonia Emanuele
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorAndrea Santulli
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorRenza Vento
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Search for more papers by this authorCorresponding Author
Giovanni Tesoriere
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo, Italy
Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Scienze Biochimiche, Università di Palermo, Policlinico, Palermo 90127, Italy.Search for more papers by this authorD. Carlisi and A. D'Anneo contributed equally to this work.
R. Vento and G. Tesoriere are co-senior authors of this work.
Abstract
This article shows that HepG2, Hep3B, and SK-Hep1 cells, three lines of human hepatocellular carcinoma (HCC) cells, are resistant to apoptosis induced by tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). Parthenolide, a sesquiterpene lactone found in European feverfew, has been shown to exert both anti-inflammatory and anti-cancer activities. This article demonstrates that co-treatment with parthenolide and TRAIL-induced apoptosis with synergistic interactions in the three lines of HCC cells. In order to explain these effects we ascertained that parthenolide increased either at protein or mRNA level the total content of death receptors TRAIL-R1 and -R2 as well as their surface expression. These effects were found in the three cell lines in the case of TRAIL-R2, while for TRAIL-R1 they were observed in HepG2 and SK-Hep1 cells, but not in Hep3B cells. We suggest that the effects of parthenolide on death receptors depend on the decrease in the level of phosphorylated and active forms of STAT proteins, an event which could be a consequence of the inhibitory effect exerted by parthenolide on the activation of JAK proteins. In agreement with this hypothesis treatment with STAT3 siRNA increased in HCC cells the effect of parthenolide on the expression of death receptors. Sensitization by parthenolide to TRAIL stimulated in the three cell lines the extrinsic mechanism of apoptosis with the activation of both caspases 8 and 3, whereas mitochondria were not involved in the process. Our results suggest that co-treatment with parthenolide and TRAIL could represent a new important therapeutic strategy for hepatic tumors. J. Cell. Physiol. 226: 1632–1641, 2011. © 2010 Wiley-Liss, Inc.
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