Breast Tissue Restoration after the Partial Mastectomy Using Polycaprolactone Scaffold

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Surgical Oncology

Background:

• Increasing rates of breast-conserving surgery necessitate effective methods for restoring breast tissue after partial mastectomy.
• Polycaprolactone (PCL) is a biocompatible and mechanically robust polymer suitable for biomedical applications.

Purpose of the Study:

• To investigate the potential of 3D-printed polycaprolactone (PCL) scaffolds for regenerating breast tissue defects following partial mastectomy.
• To evaluate the efficacy of PCL scaffolds, with and without collagen or tissue fragments, in a rat breast defect model.

Main Methods:

• Fabrication of spherical PCL scaffolds using 3D printing technology.
• Implantation of three types of PCL scaffolds (PCL alone, PCL with collagen, PCL with breast tissue fragment) into rat breast defect models.
• Assessment of tissue restoration and inflammatory markers (TNF-α, IL-6) after 6 months.

Main Results:

• Significant restoration of breast tissue was observed in the PCL scaffold group.
• Collagen expression was evident in the PCL scaffold with collagen group.
• Tumor Necrosis Factor-alpha (TNF-α) expression was significantly increased in the PCL scaffold group, while Interleukin-6 (IL-6) showed no significant difference across groups.

Conclusions:

• 3D-printed PCL scaffolds demonstrate potential for repairing breast tissue defects after partial mastectomy.
• The incorporation of collagen may enhance tissue regeneration.
• PCL scaffolds offer a promising avenue for convenient reconstruction of breast tissue defects.