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Updated: May 9, 2026
09:04
A Simple Bioassay for the Evaluation of Vascular Endothelial Growth Factors
Published on: March 15, 2016
Identification of a potent endothelium-derived angiogenic factor
Vera Jankowski1, Markus Tölle, Thi Nguyet Anh Tran
1Charité-Universitaetsmedizin Berlin, Medizinische Klinik IV (CBF), Berlin, Germany.
Plos One
|August 8, 2013
Summary
Researchers discovered diuridine tetraphosphate (Up4U), a potent angiogenic factor, secreted by human endothelial cells. This novel factor promotes blood vessel growth and cell proliferation, offering new insights into angiogenesis mechanisms.
Area of Science:
- Vascular Biology
- Cell Signaling
- Biochemistry
Background:
- Angiogenesis, the formation of new blood vessels, is crucial for development and disease.
- Vascular endothelial cells secrete angiogenic factors that regulate this process.
Purpose of the Study:
- To isolate and characterize novel angiogenic factors from human endothelial cells.
- To investigate the role of diuridine tetraphosphate (Up4U) in angiogenesis.
Main Methods:
- Purification of angiogenic factors from endothelial cell secretome using chromatography.
- Identification of Up4U via mass spectrometry and enzymatic analysis.
- In vivo and in vitro assays to assess angiogenic and proliferative effects.
Main Results:
- Diuridine tetraphosphate (Up4U) was identified as a potent angiogenic factor.
- Up4U stimulated endothelial cell proliferation, migration, and tube formation.
- Up4U induced sprouting angiogenesis and enhanced vascular smooth muscle cell proliferation.
Conclusions:
- Up4U is a novel, potent human endothelium-derived angiogenic factor.
- Up4U plays a significant role in regulating angiogenesis and vascular cell behavior.
- Endothelial cells release Up4U in response to shear stress.
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