A role for ion channels in perivascular glioma invasion

作者：Thompson Emily G; Sontheimer Harald^*

来源：European Biophysics Journal, 2016, 45(7): 635-648.

DOI：10.1007/s00249-016-1154-x

• Glioma
• Invasion
• Bradykinin
• Hydrodynamic glioma invasion
• Ion channels

Malignant gliomas are devastating tumors, frequently killing those diagnosed in little over a year. The profuse infiltration of glioma cells into healthy tissue surrounding the main tumor mass is one of the major obstacles limiting the improvement of patient survival. Migration along the abluminal side of blood vessels is one of the salient features of glioma cell invasion. Invading glioma cells are attracted to the vascular network, in part by the neuropeptide bradykinin, where glioma cells actively modify the gliovascular interface and undergo volumetric alterations to navigate the confined space. Critical to these volume modifications is a proposed hydrodynamic model that involves the flux of ions in and out of the cell, followed by osmotically obligated water. Ion and water channels expressed by the glioma cell are essential in this model of invasion and make opportune therapeutic targets. Lastly, there is growing evidence that vascular-associated glioma cells are able to control the vascular tone, presumably to free up space for invasion and growth. The unique mechanisms that enable perivascular glioma invasion may offer critical targets for therapeutic intervention in this devastating disease. Indeed, a chloride channel-blocking peptide has already been successfully tested in human clinical trials.

• 出版日期2016-10
• 单位Virginia Tech; 美国弗吉尼亚理工大学(Virginia Tech)