Adaptive changes of glioblastoma cells following exposure to hypoxic (1% oxygen) tumour microenvironment.
Issue Date
2019-04-28Subjects
glioblastomahypoxia
CD133
tumour microenvironment
personalised treatment
C710 Applied Molecular Biology, Biophysics and Biochemistry
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Glioblastoma multiforme is the most aggressive and malignant primary brain tumour, with a median survival rate of between 15 to 17 months. Heterogeneous regions occur in glioblastoma as a result of oxygen gradients which ranges from 0.1% to 10% in vivo. Emerging evidence suggests that tumour hypoxia leads to increased aggressiveness and chemo/radio resistance. Yet, few in vitro studies have been performed in hypoxia. Using three glioblastoma cell-lines (U87, U251, and SNB19), the adaptation of glioblastoma cells in a 1% (hypoxia) and 20% (normoxia) oxygen microenvironment on proliferation, metabolism, migration, neurosphere formation, CD133 and VEGF expression was investigated. Compared to cells maintained in normoxia (20% oxygen), glioblastoma cells adapted to 1% oxygen tension by reducing proliferation and enhancing metabolism. Both migratory tendency and neurosphere formation ability were greatly limited. In addition, hypoxic-mediated gene upregulation (CD133 and VEGF) was reversed when cells were removed from the hypoxic environment. Collectively, our results reveal that hypoxia plays a pivotal role in changing the behaviour of glioblastoma cells. We have also shown that genetic modulation can be reversed, supporting the concept of reversibility. Thus, understanding the degree of oxygen gradient in glioblastoma will be crucial in personalising treatment for glioblastoma patients.Citation
Musah-Eroje A, Watson S (2019) 'Adaptive changes of glioblastoma cells following exposure to hypoxic (1% oxygen) tumour microenvironment.', International journal of molecular sciences, 20 (9), pp.2091-.Publisher
MDPIPubMed ID
31035344PubMed Central ID
PMC6539006Additional Links
https://www.mdpi.com/1422-0067/20/9/2091Type
ArticleLanguage
enISSN
1422-0067EISSN
1422-0067ae974a485f413a2113503eed53cd6c53
10.3390/ijms20092091
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- Creative Commons
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by-nc-nd/4.0/
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