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A human co-culture cell model incorporating microglia supports glioblastoma growth and migration, and confers resistance to cytotoxics

Leite, Diana M., Zvar Baskovic, Barbara, Civita, Prospero, Neto, Catia, Gumbleton, Mark and Pilkington, Geoffrey J. 2020. A human co-culture cell model incorporating microglia supports glioblastoma growth and migration, and confers resistance to cytotoxics. The FASEB Journal 34 (1) , pp. 1710-1727. 10.1096/fj.201901858RR

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Abstract

Despite the importance of the tumor microenvironment in regulating tumor progression, few in vitro models have been developed to understand the effects of non‐neoplastic cells and extracellular matrix (ECM) on drug resistance in glioblastoma (GBM) cells. Using CellTrace‐labeled human GBM and microglial (MG) cells, we established a 2D co‐culture including various ratios of the two cell types. Viability, proliferation, migration, and drug response assays were carried out to assess the role of MG. A 3D model was then established using a hyaluronic acid‐gelatin hydrogel to culture a mixture of GBM and MG and evaluate drug resistance. A contact co‐culture of fluorescently labeled GBM and MG demonstrated that MG cells modestly promoted tumor cell proliferation (17%‐30% increase) and greater migration of GBM cells (>1.5‐fold increase). Notably, the presence of MG elicited drug resistance even when in a low ratio (10%‐20%) relative to co‐cultured tumor cells. The protective effect of MG on GBM was greater in the 3D model (>100% survival of GBM when challenged with cytotoxics). This new 3D human model demonstrated the influence of non‐neoplastic cells and matrix on chemoresistance of GBM cells to three agents with different mechanisms of action suggesting that such sophisticated in vitro approaches may facilitate improved preclinical testing.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Pharmacy
Publisher: Federation of American Society of Experimental Biology
ISSN: 0892-6638
Date of First Compliant Deposit: 2 January 2020
Date of Acceptance: 13 November 2019
Last Modified: 24 Mar 2020 14:03
URI: http://orca.cf.ac.uk/id/eprint/128138

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