Focal adhesion kinase and endothelial cell apoptosis
1Vascular Research Laboratory, Providence Veterans Affairs Medical Center, Department of Medicine, Alpert Medical School of Brown University, Providence, RI 02908, USA.
Abstract:
Focal adhesion kinase (FAK) is a key component of cell-substratum adhesions, known as focal adhesion complexes. Growing evidence indicates that FAK is important in maintenance of normal cell survival and that disruption of FAK signaling results in loss of substrate adhesion and anoikis (apoptosis) of anchorage-dependent cells, such as endothelial cells. Basal FAK activity in non-stimulated endothelial cells is important in maintaining cell adhesion to integrins via PI3 kinase/Akt signaling. FAK activity is dependent upon small GTPase signaling. FAK also appears to be important in cardiomyocyte hypertrophy and hypoxia/reoxygenation-induced cell death. This review summarizes the signaling pathways of FAK in prevention of apoptosis and the role of FAK in mediating adenosine and homocysteine-induced endothelial cell apoptosis and in cardiovascular diseases.
Insights
Focal adhesion kinase (FAK) is crucial for cell survival and adhesion. This review details FAK signaling pathways that prevent apoptosis and its role in cardiovascular diseases.
Area of Science:
- Cell Biology
- Molecular Biology
- Cardiovascular Research
Background:
- Focal adhesion kinase (FAK) is integral to focal adhesion complexes, mediating cell-substratum adhesion.
- FAK signaling disruption leads to anoikis (apoptosis) in anchorage-dependent cells, including endothelial cells.
- Basal FAK activity, regulated by PI3K/Akt and small GTPases, maintains endothelial cell adhesion.
Purpose of the Study:
- To review FAK signaling pathways involved in preventing apoptosis.
- To elucidate FAK's role in adenosine and homocysteine-induced endothelial cell apoptosis.
- To explore FAK's significance in cardiovascular diseases.
Main Methods:
- Literature review of FAK signaling pathways.
- Analysis of FAK's role in cellular apoptosis.
- Examination of FAK's involvement in cardiovascular pathologies.
Main Results:
- FAK is essential for normal cell survival and substrate adhesion.
- FAK activity is regulated by PI3K/Akt and small GTPase signaling.
- FAK plays a role in cardiomyocyte hypertrophy and hypoxia/reoxygenation-induced cell death.
Conclusions:
- FAK signaling is a key mechanism for preventing apoptosis in endothelial cells.
- Dysregulation of FAK contributes to endothelial cell apoptosis and cardiovascular diseases.
- Targeting FAK pathways may offer therapeutic strategies for cardiovascular conditions.
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