Abstract
Signal transduction exerted by the microenvironment around the primary tumor locus may trigger tumor metastasis especially at the migration stage. Sustained mitogen activated protein kinase (MAPK) signaling involved in uncontrolled tumor cell migration rely on the cross talks between integrin, receptor tyrosine kinase (RTK) and protein kinase C (PKC). The molecular mechanisms for cross talking between these migration-related signal cascades leading to sustained cell migration are reviewed, focusing on the focal adhesion scaffold protein paxillin as the platform for signal integration. We proposed reactive oxygen species (ROS) as the critical signal messenger sustaining these signal cascades. For the cross talk of integrin with RTK, ROS may suppress paxillin-associated protein tyrosine phosphatase (PTP-PEST) relieving its negative regulatory effects. For the cross talk of integrin with PKC, PKC itself may phosphorylate integrin or paxillin-associated focal adhesion proteins to induce generation of ROS which may reactivate PKC. In the future, ROS will be validated as the promising therapeutic targets for prevention of tumor metastasis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
