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Ivacaftor Inhibits Glioblastoma Stem Cell Maintenance and Tumor Progression

Kun Liu1,2, Jun Pu3, Zhi Nie1,2

  • 1Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Kunming, China.

Frontiers in Cell and Developmental Biology
|May 28, 2021
PubMed

Insights

Ivacaftor, used for cystic fibrosis, effectively targets glioblastoma stem cells (GSCs). This drug promotes apoptosis and inhibits tumor growth, offering a new therapeutic strategy for glioblastoma (GBM).

Area of Science:

  • Neuro-oncology
  • Cancer stem cell biology
  • Pharmacology

Background:

  • Glioblastoma (GBM) is an aggressive primary brain tumor with poor prognosis.
  • Glioblastoma stem cells (GSCs) drive tumor growth and therapy resistance.
  • Current treatments like temozolomide (TMZ) chemotherapy and radiotherapy are often ineffective against GSCs.

Purpose of the Study:

  • To investigate ivacaftor as a potential therapeutic agent targeting GSCs.
  • To evaluate the efficacy of ivacaftor in inhibiting glioblastoma progression.
  • To explore the mechanism by which ivacaftor affects GSCs.

Main Methods:

  • In vitro assessment of ivacaftor's effect on GSC apoptosis.
  • In vivo evaluation of ivacaftor's impact on patient-derived xenograft (PDX) tumor growth.
  • Analysis of stemness marker gene expression (CD133, CD44, Sox2) in GSCs treated with ivacaftor.

Main Results:

  • Ivacaftor significantly promoted cellular apoptosis in vitro.
  • Ivacaftor repressed patient-derived xenograft tumor growth in vivo.
  • Ivacaftor decreased the expression of key stemness markers (CD133, CD44, Sox2) in GSCs.

Conclusions:

  • Ivacaftor demonstrates potent inhibitory effects on glioblastoma stem cell maintenance.
  • The findings suggest ivacaftor can inhibit glioblastoma progression by specifically eliminating GSCs.
  • Ivacaftor represents a promising new therapeutic avenue for glioblastoma treatment.
Keywords:
apoptosisglioblastomaglioblastoma stem cellivacaftorstemness

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