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Down regulation of Akirin-2 increases chemosensitivity in human glioblastomas more efficiently than Twist-1

Sebastian Krossa1, Anne Dorothée Schmitt2, Kirsten Hattermann3

  • 1Institute of Zoology, Department of Structural Biology, 24118 Kiel, Germany.

Oncotarget
|June 4, 2015
PubMed

Insights

Akirin-2 knockdown enhances glioblastoma cell apoptosis after temozolomide treatment, making it a promising target for cancer therapy. Twist-1 knockdown showed less effectiveness in reducing chemoresistance.

Area of Science:

  • Molecular Biology
  • Oncology
  • Cancer Research

Background:

  • Glioblastomas are aggressive brain tumors.
  • The transcription factor Twist-1 and its interacting protein Akirin-2 regulate apoptosis.
  • Akirin-2 and Twist-1 are expressed in glioblastoma tissues, including tumor cells, endothelial cells, and immune cells.

Purpose of the Study:

  • To investigate the roles of Akirin-2 and Twist-1 in glioblastoma chemoresistance.
  • To evaluate the potential of targeting Akirin-2 or Twist-1 for glioblastoma treatment.

Main Methods:

  • Knockdown (kd) of Akirin-2 and Twist-1 in glioblastoma cells.
  • Treatment with temozolomide (TMZ).
  • Assays to measure apoptosis markers (cleaved Caspase-3/-7, cleaved PARP-1) and cell survival.
  • ImageStreamx Mark II technology for quantifying apoptosis.

Main Results:

  • Akirin-2 knockdown significantly increased apoptosis in glioblastoma cells treated with TMZ.
  • Twist-1 knockdown showed a less pronounced effect on chemoresistance compared to Akirin-2 knockdown.
  • Akirin-2 appears to be a more effective target than Twist-1 for overcoming TMZ resistance.

Conclusions:

  • Akirin-2 plays a critical role in glioblastoma cell survival and chemoresistance.
  • Targeting Akirin-2 with RNA interference (RNAi) strategies holds promise for enhancing glioblastoma treatment efficacy.
  • Akirin-2 is a more potent therapeutic target than Twist-1 for glioblastoma.
Keywords:
Akirin-2Twist-1chemoresistanceglioblastoma

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