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Selective targeting of neuroblastoma tumour-initiating cells by compounds identified in stem cell-based small molecule screens. | LitMetric

AI Article Synopsis

  • - Neuroblastoma (NB) is a highly lethal solid tumor in children, highlighting the urgent need for more effective and less toxic treatment options due to current drug limitations in targeting cancer stem cells.
  • - The study explores a method to find drugs that specifically target tumor-initiating cells (TICs) while leaving normal pediatric stem cells unharmed, and identifies DECA-14 and rapamycin as two promising candidates.
  • - Both DECA-14 and rapamycin were effective at killing TICs in small doses and significantly reduced tumor weight in animal models, suggesting that therapies tailored to target TICs could be a viable, safer alternative for treating neuroblastoma.

Article Abstract

Neuroblastoma (NB) is the most deadly extra-cranial solid tumour in children necessitating an urgent need for effective and less toxic treatments. One reason for the lack of efficacious treatments may be the inability of existing drugs to target the tumour-initiating or cancer stem cell population responsible for sustaining tumour growth, metastases and relapse. Here, we describe a strategy to identify compounds that selectively target patient-derived cancer stem cell-like tumour-initiating cells (TICs) while sparing normal paediatric stem cells (skin-derived precursors, SKPs) and characterize two therapeutic candidates. DECA-14 and rapamycin were identified as NB TIC-selective agents. Both compounds induced TIC death at nanomolar concentrations in vitro, significantly reduced NB xenograft tumour weight in vivo, and dramatically decreased self-renewal or tumour-initiation capacity in treated tumours. These results demonstrate that differential drug sensitivities between TICs and normal paediatric stem cells can be exploited to identify novel, patient-specific and potentially less toxic therapies.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3377336PMC
http://dx.doi.org/10.1002/emmm.201000093DOI Listing

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