CD44 - a new cardiovascular drug target or merely an innocent bystander?
Alexandra Krettek1, Sara Sjöberg
1Nordic School of Public Health, Box 12133, 402 42 Gothenburg, Sweden. alexandra.krettek@nhv.se
Insights
Cluster of differentiation 44 (CD44) is an adhesion molecule implicated in cancer and cardiovascular diseases like atherosclerosis. Its role in cardiovascular drug therapy warrants further investigation to determine if it
Area of Science:
- Cardiovascular Biology
- Molecular Cell Biology
- Immunology
Background:
- Cluster of differentiation 44 (CD44) is a cell surface adhesion molecule and hyaluronate receptor.
- It interacts with extracellular matrix components and is expressed on most vertebrate cells.
- CD44 plays roles in cell adhesion, migration, leukocyte homing, and apoptosis.
Purpose of the Study:
- To review the role of CD44 in cardiovascular diseases, including atherosclerosis and abdominal aortic aneurysms.
- To evaluate CD44 as a potential cardiovascular drug target.
- To synthesize findings from human and animal studies on CD44's involvement in cardiovascular pathology.
Main Methods:
- Review of existing human and animal studies.
- Analysis of CD44's function in cancer and its implications for cardiovascular disease.
- Examination of CD44's role in inflammatory processes relevant to cardiovascular conditions.
Main Results:
- CD44 is implicated in inflammatory diseases such as atherosclerosis and abdominal aortic aneurysms.
- Animal studies show variable roles for CD44 in atherogenesis depending on the experimental model.
- CD44's functions extend beyond adhesion to include leukocyte recruitment and matrix remodeling.
Conclusions:
- CD44 is a molecule of interest for cardiovascular drug therapy.
- Further research is needed to clarify CD44's precise role in cardiovascular diseases.
- Determining whether CD44 is a therapeutic target or an innocent bystander in cardiovascular pathology is crucial.
Abstract:
CD44, short for cluster of differentiation 44, is an adhesion molecule of the hyaluronate receptor family. Expressed on the surface of most vertebrate cells, it functions as a receptor for several extracellular matrix components, e.g., hyaluronan, collagen, laminin, fibronectin, and osteopontin. CD44 has in recent years been intensively studied in connection with different forms of cancer, where CD44 may regulate invasiveness and tumor progression. Although major functions involve adhesion and migration, CD44 also affects leukocyte homing and recruitment, phagocytosis, matrix remodeling, proliferation, and apoptosis. As such, CD44 is an interesting putative molecule in cardiovascular drug therapy. Accumulating evidence from human studies point to CD44 as involved in inflammatory diseases such as atherosclerosis and human abdominal aneurysms. To date, several animal studies have shown that the role of CD44 in atherogenesis may vary depending on experimental model. In this Review, we trace CD44 and its potential role in the context of cardiovascular diseases by highlighting both human and animal studies that may help us understand; is CD44 a new cardiovascular drug target or merely an innocent bystander?
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