Journal
ANTICANCER RESEARCH
Volume 42, Issue 2, Pages 767-779Publisher
INT INST ANTICANCER RESEARCH
DOI: 10.21873/anticanres.15535
Keywords
Estrogen receptor β silibinin; non-Hodgkin lymphoma; diffuse large B-cell lymphoma; cardiomyocytes; doxorubicin; apoptosis; autophagy
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Funding
- Italian Association for Cancer Research [18526]
- Nando & Elsa Peretti Foundation [NaEPF 2019-042]
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This study evaluated the anticancer activity of the phytoestrogen silibinin on DLBCL growth and its potential cardioprotective effect. The results showed that silibinin induced apoptosis and autophagy, blocked tumor cell proliferation, and protected cardiomyocytes from doxorubicin-induced toxicity.
Background/Aim: About 40% of patients with diffuse large cell lymphoma (DLBCL) still have a poor prognosis. Additionally, DLBCL patients treated with doxorubicin are at risk of cardiac failure. Growing evidence suggests an antitumor and cardioprotective activity exerted by estrogen via its binding to estrogen receptor (ER) beta. The aim of this study was to evaluate the anticancer activity of the phytoestrogen silibinin, an ER beta selective agonist, on DLBCL growth, and its potential cardioprotective effect. Materials and Methods: DLBCL cell lines SUDHL-8, SUDHL-6, and RIVA were used. The anti-tumor activity of silibinin was also evaluated in vivo in NOD/SCID/IL2Rg-/- (NSG) xenografted mice. AC16 human ventricular cardiomyocytes were used to investigate the cardioprotective effects of silibinin. Results: In vitro silibinin induced apoptosis and autophagy, and blocked tumor cell proliferation, also protecting AC16 cardiomyocytes from doxorubicin-induced toxicity. In vivo silibinin induced cell death and autophagy, and reduced tumor volume. Conclusion: Silibinin represents a promising therapeutic tool.
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