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March 25, 2026Cancer Research

Abstract B029: 3D magnetic gliomasphere modeling reveals CDK inhibitor mediated suppression of migration in newly diagnosed and recurrent glioblastoma under hypoxic conditions

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Authors

NSNiamh ScullyBCBrenton L. CavanaghHDHeiko Duessmann

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Overview

In a 3D modeling study, CDK inhibitors reduced migration in glioblastoma under hypoxia, suggesting therapeutic promise.

Key Points

  • Assess the effects of CDK inhibitors on migration and therapeutic response in glioblastoma under hypoxic conditions.
  • Developed a 3D magnetic spheroid platform for gliomasphere modeling.
  • Monitored gliomasphere migration using live-cell imaging under hypoxia.
  • Assessed stem cell plasticity via CD44 expression and analyzed CDK inhibitor impact through Western blot.
  • Evaluated cell viability and apoptosis with WST-1 and Caspase-3/7 Glo assays.
  • Examined invasion dynamics in response to TMZ and novel CKIs across disease stages.
  • Newly diagnosed gliomaspheres showed dynamic CD44 plasticity; recurrent ones had stable CD44 expression.
  • Newly diagnosed tumors were generally more invasive than recurrent tumors, though not in patient-matched pairs.
  • CDK inhibitors significantly reduced invasion and induced apoptosis more effectively than TMZ, irrespective of CD44 levels.
  • CKI efficacy correlated with MCL-1 downregulation and CDK2/7/9 inhibition under hypoxia.

Cite This Study

Scully et al. (2026) studied this question.

synapsesocial.com/papers/69c37bd4b34aaaeb1a67ea83https://doi.org/10.1158/1538-7445.brain26-b029
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