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Article: Artesunate induces mitochondria-mediated apoptosis of human retinoblastoma cells by upregulating Kruppel-like factor 6

TitleArtesunate induces mitochondria-mediated apoptosis of human retinoblastoma cells by upregulating Kruppel-like factor 6
Authors
KeywordsDrug delivery
Eye cancer
Issue Date2019
PublisherNature Publishing Group: Open Access Journals - Option C. The Journal's web site is located at http://www.nature.com/cddis/index.html
Citation
Cell Death & Disease, 2019, v. 10, p. article no. 862 How to Cite?
AbstractRetinoblastoma (RB) is the most common primary intraocular malignancy in children. Intravitreal chemotherapy achieves favorable clinical outcomes in controlling RB vitreous seeds, which are a common reason for treatment failure. Thus, a novel, effective and safe intravitreal chemotherapeutic drug is urgently required. The malaria drug artesunate (ART) recently demonstrated remarkable anticancer effects with mild side effects. The purpose of this study is to investigate the anti-RB efficacy, the underlying mechanism and the intraocular safety of ART. Herein, we verified that ART inhibits RB cell viability and induces cell apoptosis in a dose- and time-dependent manner. Microarray analysis revealed that Kruppel-like factor 6 (KLF6) was upregulated after ART treatment, and this was further confirmed by real-time PCR and western blot assays. Silencing of KLF6 expression significantly reversed ART-induced RB cell growth inhibition and apoptosis. Furthermore, ART activated mitochondria-mediated apoptosis of RB cells, while silencing KLF6 expression significantly inhibited this effect. In murine xenotransplantation models of RB, we further confirmed that ART inhibits RB tumor growth, induces tumor cell apoptosis and upregulates KLF6 expression. In addition, KLF6 silencing attenuates ART-mediated inhibition of tumor growth in vivo. Furthermore, we proved that intravitreal injection of ART in Sprague-Dawley (SD) rats is safe, with no obvious retinal function damage or structural disorders observed by electrophysiology (ERG), fundal photographs, fundus fluorescein angiography (FFA) or optical coherence tomography (OCT) examinations. Collectively, our study revealed that ART induces mitochondrial apoptosis of RB cells via upregulating KLF6, and our results may extend the application of ART to the clinic as an effective and safe intravitreal chemotherapeutic drug to treat RB, especially RB with vitreous seeds.
Persistent Identifierhttp://hdl.handle.net/10722/282864
ISSN
2023 Impact Factor: 8.1
2023 SCImago Journal Rankings: 2.447
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYang, Y-
dc.contributor.authorWu, N-
dc.contributor.authorWu, Y-
dc.contributor.authorChen, H-
dc.contributor.authorQiu, J-
dc.contributor.authorQian, X-
dc.contributor.authorZeng, J-
dc.contributor.authorChiu, K-
dc.contributor.authorGao, Q-
dc.contributor.authorZhuang, J-
dc.date.accessioned2020-06-05T06:22:26Z-
dc.date.available2020-06-05T06:22:26Z-
dc.date.issued2019-
dc.identifier.citationCell Death & Disease, 2019, v. 10, p. article no. 862-
dc.identifier.issn2041-4889-
dc.identifier.urihttp://hdl.handle.net/10722/282864-
dc.description.abstractRetinoblastoma (RB) is the most common primary intraocular malignancy in children. Intravitreal chemotherapy achieves favorable clinical outcomes in controlling RB vitreous seeds, which are a common reason for treatment failure. Thus, a novel, effective and safe intravitreal chemotherapeutic drug is urgently required. The malaria drug artesunate (ART) recently demonstrated remarkable anticancer effects with mild side effects. The purpose of this study is to investigate the anti-RB efficacy, the underlying mechanism and the intraocular safety of ART. Herein, we verified that ART inhibits RB cell viability and induces cell apoptosis in a dose- and time-dependent manner. Microarray analysis revealed that Kruppel-like factor 6 (KLF6) was upregulated after ART treatment, and this was further confirmed by real-time PCR and western blot assays. Silencing of KLF6 expression significantly reversed ART-induced RB cell growth inhibition and apoptosis. Furthermore, ART activated mitochondria-mediated apoptosis of RB cells, while silencing KLF6 expression significantly inhibited this effect. In murine xenotransplantation models of RB, we further confirmed that ART inhibits RB tumor growth, induces tumor cell apoptosis and upregulates KLF6 expression. In addition, KLF6 silencing attenuates ART-mediated inhibition of tumor growth in vivo. Furthermore, we proved that intravitreal injection of ART in Sprague-Dawley (SD) rats is safe, with no obvious retinal function damage or structural disorders observed by electrophysiology (ERG), fundal photographs, fundus fluorescein angiography (FFA) or optical coherence tomography (OCT) examinations. Collectively, our study revealed that ART induces mitochondrial apoptosis of RB cells via upregulating KLF6, and our results may extend the application of ART to the clinic as an effective and safe intravitreal chemotherapeutic drug to treat RB, especially RB with vitreous seeds.-
dc.languageeng-
dc.publisherNature Publishing Group: Open Access Journals - Option C. The Journal's web site is located at http://www.nature.com/cddis/index.html-
dc.relation.ispartofCell Death & Disease-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectDrug delivery-
dc.subjectEye cancer-
dc.titleArtesunate induces mitochondria-mediated apoptosis of human retinoblastoma cells by upregulating Kruppel-like factor 6-
dc.typeArticle-
dc.identifier.emailChiu, K: datwai@hku.hk-
dc.identifier.authorityChiu, K=rp01973-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1038/s41419-019-2084-1-
dc.identifier.pmid31723124-
dc.identifier.pmcidPMC6853908-
dc.identifier.scopuseid_2-s2.0-85074960366-
dc.identifier.hkuros310209-
dc.identifier.volume10-
dc.identifier.spagearticle no. 862-
dc.identifier.epagearticle no. 862-
dc.identifier.isiWOS:000497971900002-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl2041-4889-

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