Polymers for pro- and anti-angiogenic therapy

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Traditional bolus injections for growth factor signaling may not replicate natural biologic delivery dynamics.
• Dysregulated growth factor signaling is implicated in various pathological conditions, necessitating improved therapeutic strategies.

Purpose of the Study:

• To explore polymeric delivery systems as an alternative to bolus injections for modulating growth factor signaling.
• To discuss the design principles and potential applications of these systems in mimicking extracellular matrix functions.

Main Methods:

• Fabrication of polymeric delivery systems using synthetic and natural polymers.
• Designing systems to control the release of therapeutic molecules, creating spatial and temporal gradients.
• Evaluating the physicochemical and biological attributes influencing system design.

Main Results:

• Polymeric systems can mimic extracellular matrix sequestration and binding characteristics.
• These systems facilitate the delivery of therapeutic molecules at therapeutically efficient local concentrations.
• Controlled spatial (d[V]/dx) and temporal (d[V]/dt) gradients of growth factors can be achieved.

Conclusions:

• Polymeric delivery systems offer a promising strategy for controlled growth factor signaling.
• These systems can be adapted for various morphogens and growth factors, with potential applications in angiogenesis (e.g., vascular endothelial growth factor [VEGF]).