Prohibitin, relocated to the front ends, can control the migration directionality of colorectal cancer cells

Oncotarget
Li-Li MaYan-Qing Ding

Abstract

Directional migration is a cost-effective movement allowing invasion and metastatic spread of cancer cells. Although migration related to cytoskeletal assembly and microenvironmental chemotaxis has been elucidated, little is known about interaction between extracellular and intracellular molecules for controlling the migrational directionality. A polarized expression of prohibitin (PHB) in the front ends of CRC cells favors metastasis and is correlated with poor prognosis for 545 CRC patients. A high level of vascular endothelial growth factor (VEGF) in the interstitial tissue of CRC patients is associated with metastasis. VEGF bound to its receptor, neuropilin-1, can stimulate the activation of cell division cycle 42, which recruits intra-mitochondrial PHB to the front end of a CRC cell. This intracellular relocation of PHB results in the polymerization and reorganization of filament actin extending to the front end of the cell. As a result, the migration directionality of CRC cells is targeted towards VEGF. Together, these findings identify PHB as a key modulator of directional migration of CRC cells and a target for metastasis.

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Methods Mentioned

BETA
GTPases
enzyme-linked immune sorbent assay
Co-immunoprecipitation assay
pull-down
ELISA
confocal microscopy
PCR

Software Mentioned

Image
Pro Plus ( IPP
SPSS

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