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Focal adhesion kinase
1Cruciform Project, University College London, Rayne Institute, U.K.
Abstract:
Focal adhesion kinase (FAK) is a member of a growing family of non-receptor protein tyrosine kinases. Though originally identified as a putative substrate for the oncogenic tyrosine kinase pp60v-src, it is now well-established that FAK tyrosine phosphorylation is induced by adhesion of cell surface integrins to extracellular matrix and by a variety of other extracellular factors including the ligands for receptor tyrosine kinases and for seven transmembrane domain G-protein-coupled receptors. FAK can associate with multiple cellular components including other focal adhesion-associated proteins and signalling molecules. FAK is localized to focal adhesions and is centrally implicated in the regulation of cell motility and adhesion. Knocking out the FAK gene in mice prevents normal embryonic development and is associated with loss of mesenchymal cell motility. Recent findings further suggest novel tissue-specific functions for FAK, particularly in the brain. These findings implicate FAK in the aberrant migration of cells in a variety of diseases and suggest that FAK may be a novel target for therapeutic strategies.
Insights
Focal adhesion kinase (FAK) is crucial for cell movement and adhesion. Its dysfunction is linked to diseases, suggesting FAK as a potential therapeutic target.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Biology
Background:
- Focal adhesion kinase (FAK) is a non-receptor protein tyrosine kinase.
- FAK phosphorylation is triggered by integrin adhesion and various extracellular signals.
- FAK interacts with numerous cellular proteins and signaling molecules.
Purpose of the Study:
- To review the established and emerging roles of FAK in cellular processes.
- To highlight FAK's involvement in cell motility, adhesion, and embryonic development.
- To explore FAK's tissue-specific functions and therapeutic potential.
Main Methods:
- Literature review of FAK research.
- Analysis of FAK's role in cell signaling pathways.
- Examination of FAK knockout mouse models.
Main Results:
- FAK is central to regulating cell motility and adhesion.
- FAK gene knockout in mice results in developmental defects and impaired cell motility.
- FAK exhibits novel, tissue-specific functions, notably in the brain.
Conclusions:
- FAK plays a critical role in fundamental cellular processes.
- Aberrant cell migration in diseases is linked to FAK dysfunction.
- FAK represents a promising therapeutic target for various diseases.