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Assessments for bone regeneration using the polycaprolactone SLUP (salt-leaching using powder) scaffold
Yong Sang Cho1, Myoung Wha Hong2, Meiling Quan2
1Division of Mechanical and Automotive Engineering, College of Engineering, Wonkwang University, 460 Iksandae-ro, Iksan, Jeonbuk, 570-749, Republic of Korea.
Journal of Biomedical Materials Research. Part A
|September 8, 2017
Summary
The novel salt-leaching using powder (SLUP) scaffold enhances pore interconnectivity without organic solvents. This PCL scaffold shows superior cell attachment, proliferation, and bone formation in vivo compared to conventional methods.
Area of Science:
- Biomaterials Engineering
- Tissue Engineering
- Regenerative Medicine
Background:
- Conventional salt-leaching scaffolds often require organic solvents or high pressure.
- Developing advanced scaffolds with improved porosity and interconnectivity is crucial for tissue regeneration.
- Polycaprolactone (PCL) is a widely used biodegradable polymer for biomedical applications.
Purpose of the Study:
- To evaluate the in vitro and in vivo performance of a novel salt-leaching using powder (SLUP) scaffold made from polycaprolactone (PCL).
- To compare the characteristics and cell responses of SLUP scaffolds against conventional salt-leaching and 3D-plotted PCL scaffolds.
- To determine the efficacy of SLUP scaffolds in promoting new bone formation and bone ingrowth.
Main Methods:
- Fabrication of PCL scaffolds using the SLUP technique, conventional salt-leaching, and 3D plotting.
- Assessment of scaffold morphology, mechanical properties, and water absorption.
- In vitro evaluation of cell attachment and proliferation.
- In vivo assessment of new bone formation and bone ingrowth in a calvarial defect model.
Main Results:
- The SLUP scaffold exhibited enhanced pore interconnectivity compared to conventional salt-leaching scaffolds.
- In vitro studies showed superior cell attachment and proliferation on SLUP scaffolds versus 3D-plotted scaffolds due to morphological advantages.
- In vivo results demonstrated significantly greater new bone formation and bone ingrowth with SLUP scaffolds compared to the 3D-plotted controls in a calvarial defect model.
Conclusions:
- The SLUP technique offers a method for fabricating PCL scaffolds with high porosity and improved pore interconnectivity without high pressure or organic solvents.
- SLUP scaffolds demonstrate enhanced biological performance, including better cell response and superior bone regeneration capabilities in vivo.
- The SLUP method presents a promising alternative for creating advanced scaffolds for bone tissue engineering applications.
