The impact of autophagy during the development and survival of glioblastoma

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Abstract

Glioblastoma is the most common and aggressive adult brain tumour with a poor median survival and limited treatment options. Following surgical resection and chemotherapy, recurrence of the disease is inevitable. Genomic studies have identified key drivers of glioblastoma development, including amplifications of receptor tyrosine kinases, which drive tumour growth. To improve treatment, it is crucial to understand survival response processes in glioblastoma that fuel cell proliferation and promote resistance to treatment. One such process is autophagy, a catabolic pathway that delivers cellular components sequestered into vesicles for lysosomal degradation. Autophagy plays an important role in maintaining cellular homeostasis and is upregulated during stress conditions, such as limited nutrient and oxygen availability, and in response to anti-cancer therapy. Autophagy can also regulate pro-growth signalling and metabolic rewiring of cancer cells in order to support tumour growth. In this review, we will discuss our current understanding of how autophagy is implicated in glioblastoma development and survival. When appropriate, we will refer to findings derived from the role of autophagy in other cancer models and predict the outcome of manipulating autophagy during glioblastoma treatment.
Original languageEnglish
JournalOpen Biology
Volume10
Issue number9
DOIs
Publication statusPublished - 2 Sep 2020

Keywords

  • autophagy
  • brain tumour
  • cancer
  • glioblastoma
  • therapy
  • receptor tyrosine kinase (RTK)

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