Endothelial progenitor cells and thrombosis
Eugenia Rosa Nuzzolo1, Maria Grazia Iachininoto, Luciana Teofili
1Department of Hematology, Catholic University, Rome, Italy.
Insights
Endothelial progenitor cells circulate in blood and aid in new vessel formation. This review covers methods to count these cells and their role in cardiovascular diseases and specific conditions like pulmonary arterial hypertension.
Area of Science:
- Vascular Biology and Regenerative Medicine
- Hematology and Oncology
Background:
- Vessel formation (angiogenesis and vasculogenesis) is crucial throughout life, not just during embryonic development.
- Endothelial progenitor cells (EPCs) were discovered in peripheral blood in 1997, demonstrating their role in promoting vasculogenesis at ischemic sites.
Purpose of the Study:
- To review methods for enumerating endothelial progenitor cells (EPCs).
- To explore the involvement of EPCs in hemostatic pathways.
- To describe altered EPC trafficking in cardiovascular diseases and other conditions.
Main Methods:
- Literature review summarizing various techniques for EPC enumeration.
- Analysis of studies detailing EPC function in hemostasis.
- Examination of research on EPC behavior in disease states.
Main Results:
- Diverse methods exist for quantifying circulating EPCs, each with specific applications.
- EPCs play a role in hemostatic processes.
- EPCs exhibit altered trafficking patterns in cardiovascular diseases and are implicated in pulmonary arterial hypertension and Philadelphia-negative myeloproliferative neoplasms.
Conclusions:
- Endothelial progenitor cells are vital for vascular repair and maintenance.
- Understanding EPC enumeration and function is critical for diagnosing and treating vascular and hematological disorders.
- Further research into EPCs may reveal new therapeutic strategies for conditions like cardiovascular disease and specific cancers.
Abstract:
The remodelling of existing vessels (i.e. angiogenesis) and the "de novo" vessel formation (i.e. vasculogenesis) occur not only during the embryonic development but also over the entire postnatal life. In 1997, the Asahara group first reported that endothelial progenitor cells circulate in peripheral blood and that they are recruited at sites of ischemia, thus proving that these cells are able to promote vasculogenesis. Since then, several different approaches have been set up to investigate endothelial progenitor cells. This review summarizes the different modalities utilized to enumerate these cells, delineates their involvement in the haemostatic pathways, and depicts their altered trafficking during cardiovascular diseases. Finally, recent observations suggesting a primary role for endothelial progenitors in particular situations such as pulmonary arterial hypertension or Philadelphia negative-myeloproliferative neoplasms are discussed.
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