自愈水凝胶
内皮干细胞
体内
细胞生物学
细胞培养
病理
脑瘤
间充质干细胞
生物
细胞粘附
癌症研究
细胞
化学
肿瘤微环境
体外
医学
肿瘤细胞
生物化学
有机化学
生物技术
遗传学
作者
Wang Christine,Jianfeng Li,Sauradeep Sinha,Addie Peterson,Gerald A. Grant,Fan Yang
出处
期刊:Biomaterials
[Elsevier]
日期:2019-05-01
卷期号:202: 35-44
被引量:32
标识
DOI:10.1016/j.biomaterials.2019.02.024
摘要
Glioblastoma (GBM) is an aggressive malignant brain tumor with median survival of 12 months and 5-year survival rate less than 5%. GBM is highly vascularized, and the interactions between tumor and endothelial cells play an important role in driving tumor growth. To study tumor-endothelial interactions, the gold standard co-culture model is transwell culture, which fails to recapitulate the biochemical or physical cues found in tumor niche. Recently, we reported the development of poly(ethylene-glycol)-based hydrogels as 3D niche that supported GBM proliferation and invasion. To further mimic the microanatomical architecture of tumor-endothelial interactions in vivo, here we developed a hydrogel-based co-culture model that mimics the spatial organization of tumor and endothelial cells. To increase the physiological relevance, patient-derived GBM cells and mouse brain endothelial cells were used as model cell types. Using hydrolytically-degradable alginate fibers as porogens, endothelial cells were deployed and patterned into vessel-like structures in 3D hydrogels with high cell viability and retention of endothelial phenotype. Co-culture led to a significant increase in GBM cell proliferation and decrease in endothelial cell expression of cell adhesion proteins. In summary, we have developed a novel 3D co-culture model that mimics the in vivo spatial organization of brain tumor and endothelial cells. Such model may provide a valuable tool for future mechanistic studies to elucidate the effects of tumor-endothelial interactions on tumor progression in a more physiologically-relevant manner.
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