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Updated: May 12, 2026

In Vitro Model of Coronary Angiogenesis
Published on: March 10, 2020
Apolipoprotein (a) impairs endothelial progenitor cell-mediated angiogenesis
Ren Wang1, Kai Zhang, Shuang Li
1Key Laboratory for Arteriosclerology of Hunan Province, Institute of Cardiovascular Disease, University of South China, Hengyang City, China.
Apolipoprotein (a) impairs blood vessel formation by reducing endothelial progenitor cell (EPC) function. This finding suggests apo (a) may hinder recovery from ischemic vascular diseases.
Area of Science:
- Vascular Biology
- Regenerative Medicine
- Biochemistry
Background:
- Therapeutic angiogenesis is crucial for treating ischemic peripheral vascular diseases.
- Apolipoprotein (a) (apo (a)), structurally similar to plasminogen, may inhibit endothelial progenitor cell (EPC) functions.
- Understanding apo (a)'s impact on EPCs is vital for developing effective vascular therapies.
Purpose of the Study:
- To investigate the effect of apolipoprotein (a) on endothelial progenitor cell (EPC)-induced angiogenesis.
- To evaluate whether apo (a) influences EPC proliferation, adhesion, migration, and homing capabilities.
Main Methods:
- EPCs were isolated from apo (a) transgenic and wild-type mice.
- EPCs were cultured with or without apo (a) and transplanted into hindlimb ischemia models.
- EPC adhesion, migration, tubule formation, and in vivo homing were assessed.
Main Results:
- Apolipoprotein (a) significantly reduced EPC adhesion and migration in vitro.
- EPC tubule-like formation was impaired by apo (a) treatment.
- In vivo, apo (a) reduced EPC homing to ischemic tissue and decreased capillary density.
Conclusions:
- Apolipoprotein (a) attenuates the functional capabilities of endothelial progenitor cells.
- These inhibitory effects of apo (a) on EPCs may impede angiogenesis and hinder recovery from ischemic vascular conditions.
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