Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 25, Issue 36, Pages 36545-36554Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-018-3477-x
Keywords
Heat processing; Glioblastoma; Adhesion; Migration; Invasion; Angiogenesis
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Funding
- Ministere Tunisienne de l'Enseignement Superieur et de la Recherche Scientifique
- Institut National de la Sante et de la Recherche Medicale (INSERM)
- SIRIC (INCa, Institut National du Cancer)
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Among the flavonoids, luteolin is a flavone that has been identified in many plants. It is known for its apoptotic potential with damage to DNA and cell cycle blockage. Many studies have shown that luteolin has anti-oxidant, anti-inflammatory, and anti-cancer activities. However, it is known that heat treatment (boiling, cooking, and treating with microwaves ...) can influence the structure of flavonoids, which often leads to changes in their activities. The present study was conducted to study the effect of heated luteolin on anti-tumor activity of glioblastoma cells U87. Glioblastoma cell viability was evaluated by MTT assay. Adhesion assay was performed on different protein matrices (collagen type 1, vitronectin, fibronectin, and poly-L-lysine); migration assay was determined by modified Boyden chambers and videomicroscopy, and finally, angiogenesis was tested in vitro by capillary network formation on Matrigel. The results obtained show that the thermal treatment significantly reduces its cytotoxic activity and ability to inhibit cell adhesion to different protein matrices. It was also found that the heat processed significantly reduced the ability of luteolin to inhibit cell migration, cell invasion, and endothelial cell angiogenesis (HMEC-1). This suggests that heat treated luteolin has a lower anti-tumor potential than native luteolin.
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