Electrospun Polycaprolactone (PCL) Degradation: An In Vitro and In Vivo Study.

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Polycaprolactone (PCL) is a biocompatible and FDA-approved polymer favored in tissue engineering.
• The hydrophobic nature of bulk PCL limits its degradation rate for applications like skin regeneration.
• Electrospun PCL fiber meshes offer a high surface area, potentially accelerating degradation.

Purpose of the Study:

• To evaluate the in vitro and in vivo degradation of electrospun PCL meshes over 90 days.
• To assess the suitability of these PCL meshes as wound dressings.
• To investigate the influence of enzymatic and hydrolytic conditions on PCL mesh degradation.

Main Methods:

• In vitro degradation studies using enzymatic (lipase) and hydrolytic conditions in a static medium.
• In vivo degradation assessment over 90 days in subcutaneous pockets.
• Evaluation of sample integration and tissue response in vivo.

Main Results:

• In vitro degradation reached 97% for PCL meshes, significantly influenced by lipase.
• In vivo degradation was slower compared to in vitro conditions.
• PCL mesh samples were well-integrated into surrounding tissues without rejection.

Conclusions:

• Electrospun PCL meshes demonstrate tunable degradation profiles suitable for wound dressing applications.
• Enzymatic activity, particularly lipase, significantly enhances PCL mesh degradation in vitro.
• The biocompatibility and integration of PCL meshes in vivo support their potential as advanced wound care materials.