Epidermal growth factor upregulates motility of Mat-LyLu rat prostate cancer cells partially via voltage-gated Na+ channel activity.

Abstract:

:The main aim of this investigation was to determine whether a functional relationship existed between epidermal growth factor (EGF) and voltage-gated sodium channel (VGSC) upregulation, both associated with strongly metastatic prostate cancer cells. Incubation with EGF for 24 h more than doubled VGSC current density. Similar treatment with EGF significantly and dose-dependently enhanced the cells' migration through Transwell filters. Both the patch clamp recordings and the migration assay suggested that endogenous EGF played a similar role. Importantly, co-application of EGF and tetrodotoxin, a highly selective VGSC blocker, abolished 65% of the potentiating effect of EGF. It is suggested that a significant portion of the EGF-induced enhancement of migration occurred via VGSC activity.

journal_name

J Cell Physiol

authors

Ding Y,Brackenbury WJ,Onganer PU,Montano X,Porter LM,Bates LF,Djamgoz MB

doi

10.1002/jcp.21289

subject

Has Abstract

pub_date

2008-04-01 00:00:00

pages

77-81

issue

1

eissn

0021-9541

issn

1097-4652

journal_volume

215

pub_type

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