In vitro models of angiogenesis

Area of Science:

• Biomedical Engineering
• Cell Biology
• Vascular Biology

Background:

• Neovascularization encompasses vasculogenesis and angiogenesis, the latter forming new capillaries from existing vessels.
• Angiogenesis involves endothelial cell (EC) recruitment, migration, proliferation, and differentiation, influenced by cell-cell and cell-extracellular matrix (ECM) interactions.
• Understanding angiogenesis is critical for numerous clinical fields, including cardiovascular disease, oncology, and wound healing.

Purpose of the Study:

• To review advancements in in vitro models for studying angiogenesis.
• To highlight the significance of incorporating 3D cell-matrix and EC-mural cell interactions into angiogenesis assays.
• To present a novel 3D angiogenesis assay and discuss its applications in therapeutic neovascularization and vascular graft tissue engineering.

Main Methods:

• Review of existing literature on in vitro angiogenesis models.
• Discussion of the importance of 3D microenvironments and cell-cell interactions.
• Presentation of a specific 3D angiogenesis assay developed by the authors' lab.

Main Results:

• Novel in vitro models are crucial for understanding complex angiogenic processes.
• Incorporating 3D aspects and mural cell interactions enhances the clinical relevance of angiogenesis assays.
• The authors' 3D assay demonstrates potential for studying therapeutic neovascularization and tissue engineering.

Conclusions:

• Advanced in vitro models, particularly those incorporating 3D environments and cell interactions, are essential for studying angiogenesis.
• The developed 3D angiogenesis assay offers a valuable tool for research in therapeutic neovascularization and vascular tissue engineering.
• Further development and application of such models will accelerate progress in regenerative medicine and treatment of vascular diseases.