The role of astrocytes in the progression of brain cancer

complicating the picture of the tumor microenvironment

Amanda L. Placone, Alfredo Quinones-Hinojosa, Peter C. Searson

Research output: Contribution to journalReview article

24 Citations (Scopus)

Abstract

Gliomas and brain-metastatic tumors contribute to hundreds of thousands of deaths every year. Typical survival times for brain cancer patients, even with surgical, chemotherapy, and radiation treatment, remain very low despite advances in treatment. In brain cancers, astrocytes, which comprise approximately 50 % of the cells in the brain, become activated, resulting in a layer of reactive astrocytes surrounding the tumor. This process of reactive gliosis, which involves the secretion of growth factors and cytokines, helps repair injury in the brain, but also plays a role in disease progression. In this review, we survey the mechanisms by which astrocytes modulate the local tumor microenvironment, enhancing proliferation, invasion, chemoprotection, and immunoprotection of tumor cells. Consideration of the effect of astrocytes and reactive gliosis in in vitro and in vivo assays may allow us to obtain a more complete picture of the interactions occurring at the tumor microenvironment, which will provide additional insight into potential pathways that can be targeted by brain cancer therapeutics.

Original languageEnglish (US)
Pages (from-to)61-69
Number of pages9
JournalTumor Biology
Volume37
Issue number1
DOIs
StatePublished - Jan 1 2016
Externally publishedYes

Fingerprint

Tumor Microenvironment
Brain Neoplasms
Astrocytes
Gliosis
Glioma
Brain Injuries
Disease Progression
Neoplasms
Intercellular Signaling Peptides and Proteins
Therapeutics
Radiation
Cytokines
Drug Therapy
Survival
Brain

Keywords

  • Astrocytes
  • Glioma
  • Invasion
  • Proliferation
  • Reactive gliosis

ASJC Scopus subject areas

  • Cancer Research

Cite this

The role of astrocytes in the progression of brain cancer : complicating the picture of the tumor microenvironment. / Placone, Amanda L.; Quinones-Hinojosa, Alfredo; Searson, Peter C.

In: Tumor Biology, Vol. 37, No. 1, 01.01.2016, p. 61-69.

Research output: Contribution to journalReview article

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