Combretastatin A4 phosphate induces programmed cell death in vascular endothelial cells
Xueqiang Ding1, Zhaoqiang Zhang, Su Li
1Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, PR China.
Abstract:
Combretastatin A4 phosphate (CA4P) is currently undergoing clinical trials as a tumor vascular-targeting agent. Here, we defined the antivascular effect and programmed cell death (PCD) induced by CA4P in vascular endothelial cells. CA4P induced time- and dose-dependent antiproliferative activities against human umbilical vein endothelial cells (HUVECs), and caused G2/M arrest accompanied with DNA fragmentation. The in vitro wound assay and tube formation assay indicated that CA4P potently inhibited migration of endothelial cells and tube formation. The apoptosis and autophagy marker microtubule-associated protein light chain 3 (LC3)-II was induced in CA4P-treated HUVECs. The current study demonstrates that CA4P is a promising antivascular agent with potent PCD-inducing activities. CA4P may be useful in the treatment of cancer and hemangioma.
Insights
Combretastatin A4 phosphate (CA4P) effectively targets tumor blood vessels by inducing programmed cell death (PCD) in endothelial cells. This antivascular agent shows promise for treating cancers and hemangiomas.
Area of Science:
- Vascular biology
- Cancer research
- Pharmacology
Background:
- Combretastatin A4 phosphate (CA4P) is an antivascular agent investigated for cancer therapy.
- Understanding its mechanism in vascular endothelial cells is crucial for therapeutic development.
Purpose of the Study:
- To define the antivascular effects of CA4P.
- To investigate the programmed cell death (PCD) induced by CA4P in vascular endothelial cells.
Main Methods:
- Assessing antiproliferative activity against human umbilical vein endothelial cells (HUVECs).
- Evaluating effects on cell cycle progression and DNA fragmentation.
- Utilizing in vitro wound and tube formation assays to assess endothelial cell migration and vascularization.
- Measuring apoptosis and autophagy markers, including microtubule-associated protein light chain 3 (LC3)-II.
Main Results:
- CA4P demonstrated time- and dose-dependent antiproliferative effects on HUVECs.
- CA4P induced G2/M cell cycle arrest and DNA fragmentation.
- Significant inhibition of endothelial cell migration and tube formation was observed.
- Apoptosis and autophagy, indicated by LC3-II induction, were triggered by CA4P treatment.
Conclusions:
- CA4P exhibits potent antivascular activity by inducing programmed cell death in endothelial cells.
- CA4P is a promising agent for cancer and hemangioma treatment due to its vascular-targeting properties.
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