Related Experiment Video
Updated: May 21, 2026
09:32
Electrospun Nanofiber Scaffolds with Gradations in Fiber Organization
Published on: April 19, 2015
Nanofiber, Microfiber, or Hybrid: Which Architecture Excels in Soft Tissue Reinforcement and Constructive
S M Shatil Shahriar1,2, Navatha Shree Sharma1, Syed Muntazir Andrabi1
1Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States.
ACS Applied Materials & Interfaces
|May 19, 2026
Summary
New hybrid fiber meshes enhance soft tissue reconstruction by balancing mechanical strength and promoting tissue regeneration. These advanced scaffolds reduce fibrosis and improve integration, offering superior performance for medical implants.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Current soft tissue scaffolds struggle to balance mechanical reinforcement with tissue regeneration and antifibrotic properties.
- Existing antifibrotic strategies often compromise tissue integration and long-term performance due to their architecture.
Purpose of the Study:
- To engineer and evaluate poly(ε-caprolactone)/polylactic acid (PCL/PLA) fiber meshes with varying architectures (nanofiber, microfiber, hybrid) for soft tissue reconstruction.
- To identify a fiber architecture that optimizes the trade-off between mechanical reinforcement, antifibrotic effects, and endogenous tissue regeneration.
Main Methods:
- Fabrication of three PCL/PLA mesh types: nanofiber, microfiber, and hybrid.
- In vitro and in vivo evaluation using a subcutaneous implantation model in Sprague-Dawley rats.
- Assessment of mechanical properties, cell infiltration, neovascularization, collagen deposition, and fibrotic response.
Main Results:
- Hybrid meshes exhibited enhanced tensile strength (38.2 ± 4.5 N) and tear resistance compared to commercial products.
- Microfiber and hybrid meshes facilitated deep 3D cell infiltration (>60%), promoting neovascularization and uniform collagen deposition.
- Larger, interconnected pores (>100 μm²) correlated with enhanced cellular infiltration and vascularization, reducing fibrotic responses.
Conclusions:
- Hybrid fiber meshes effectively balance mechanical reinforcement and regenerative integration for soft tissue reconstruction.
- Optimized pore size and interconnectedness are critical for promoting cellular infiltration, vascularization, and constructive tissue remodeling.
- The developed hybrid meshes offer a promising solution for reducing fibrotic encapsulation while enhancing structural support and tissue regeneration.
