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- W4307334329 abstract "Abstract Neuroblastoma (NB) is a highly aggressive extracranial solid tumor in children. Due to its heterogeneity, NB remains a therapeutic challenge. Several oncogenic factors, including the Hippo effectors YAP/TAZ, are associated with NB tumorigenesis. Verteporfin (VPF) is an FDA-approved drug shown to directly inhibit YAP/TAZ activity. Our study aimed to investigate VPF’s potential as a therapeutic agent in NB. We show that VPF selectively and efficiently impairs the viability of YAP/ TAZ-expressing NB GI-ME-N and SK-N-AS cells, but not of normal fibroblasts. To investigate whether VPF-mediated NB cell killing is YAP-dependent, we tested VPF potency in CRISPR-mediated YAP/TAZ knock-out GI-ME-N cells, as well as YAP-negative BE(2)-M17 NB cells. Our data shows that VPF-mediated NB cell killing is not dependent on YAP expression. Moreover, we determined that the formation of high molecular weight (HMW) complexes is an early and shared VPF-induced cytotoxic mechanism in both YAP-positive and YAP-negative NB models. The accumulation of HMW complexes, involving STAT3, GM130 and COX IV proteins, impaired cell homeostasis and triggered cell stress and cell death mechanisms. Altogether, our study shows significant in vitro and in vivo VPF-induced suppression of NB growth, making VPF a potential therapeutic candidate against NB." @default.
- W4307334329 created "2022-10-31" @default.
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- W4307334329 date "2022-10-26" @default.
- W4307334329 modified "2023-10-18" @default.
- W4307334329 title "Verteporfin-induced proteotoxicity impairs cell homeostasis and survival in neuroblastoma subtypes independent of YAP/TAZ expression" @default.
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- W4307334329 doi "https://doi.org/10.21203/rs.3.rs-2151532/v1" @default.
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