Cell-Seeded Biomaterial Scaffolds: The Urgent Need for Unanswered Accelerated Angiogenesis

Area of Science:

• Tissue Engineering
• Biomaterials Science
• Regenerative Medicine

Background:

• Neovascularization is essential for nutrient delivery in tissue engineering, yet achieving optimal blood vessel formation remains a significant challenge.
• Failure to promote adequate angiogenesis leads to poor tissue function and reduced cell viability.
• Current approaches often rely on limited stimulatory factors, neglecting promising options like electrical, topographical, and magnetic cues.

Purpose of the Study:

• To comprehensively review and classify natural and synthetic biomaterial scaffolds that support angiogenesis.
• To examine various cell sources and influential factors, with a focus on biomechanical and unique stimulatory factors for angiogenesis.
• To provide a bottom-up overview of angiogenic biomaterials and cell selection, identifying key parameters for future research.

Main Methods:

• Systematic literature review of natural and synthetic scaffolds, including hydrogels.
• Analysis of cell sources and stimulatory factors (biomechanical, biomolecular, electrical, topographical, magnetic).
• Classification and comparison of biomaterials and cell selection strategies for angiogenesis.

Main Results:

• Summary of diverse biomaterial scaffolds (natural, synthetic, hydrogels) that promote angiogenesis.
• Overview of cell sources and the impact of various stimulatory factors on blood vessel formation.
• Identification of critical parameters for biomaterial and cell selection in tissue engineering.

Conclusions:

• Effective neovascularization requires careful selection of biomaterials and cells, alongside optimized stimulatory factors.
• Further research is needed to integrate and compare different angiogenic approaches for improved tissue engineering outcomes.
• Addressing identified parameters will advance the development of functional engineered tissues.