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Updated: Jul 5, 2026
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Electrospun Nanofiber Scaffolds with Gradations in Fiber Organization
Published on: April 19, 2015
Nanobioengineered electrospun composite nanofibers and osteoblasts for bone regeneration
Jayarama Reddy Venugopal1, Sharon Low, Aw Tar Choon
1Nanoscience and Nanotechnology Initiative, Division of Bioengineering, National University of Singapore, Singapore. engjrv@nus.edu.sg
Artificial Organs
|May 13, 2008
Summary
This study developed a novel composite nanofibrous scaffold using polycaprolactone, hydroxyapatite, and gelatin for bone regeneration. The scaffold significantly enhanced osteoblast proliferation, activity, and mineralization, showing great potential for treating bone defects.
Area of Science:
- Biomaterials Engineering
- Tissue Engineering
- Regenerative Medicine
Background:
- Bone defects pose significant medical and socioeconomic challenges.
- Current treatments face limitations such as donor site morbidity and size constraints.
- Bioartificial bone tissue engineering offers a promising alternative.
Purpose of the Study:
- To engineer novel nanofibrous scaffolds for bone tissue regeneration.
- To evaluate the potential of a composite scaffold made from polycaprolactone (PCL), hydroxyapatite (HA), and gelatin (Gel) for osteoblast support.
Main Methods:
- Electrospinning was used to create PCL/HA/Gel composite nanofibers (1:1:2 ratio) alongside control scaffolds.
- Scaffold properties including fiber diameter, pore size, porosity, and tensile properties were characterized.
- Fourier transform infrared spectroscopy and field emission scanning electron microscopy were employed for material and cell analysis.
- In vitro studies assessed osteoblast proliferation, alkaline phosphatase activity, and mineralization on the scaffolds.
Main Results:
- The PCL/HA/Gel composite scaffolds exhibited suitable porosity and interconnectivity for cell infiltration and nutrient transport.
- Fourier transform infrared analysis confirmed the presence of functional groups conducive to osteoblast activity.
- Compared to PCL scaffolds, the composite scaffolds significantly increased osteoblast proliferation (88%), alkaline phosphatase activity (77%), and mineralization (66%).
- Microscopic imaging confirmed enhanced osteoblast proliferation and mineralization on the composite nanofibers.
Conclusions:
- Electrospun PCL/HA/Gel composite nanofibrous scaffolds demonstrate significant potential for bone regeneration.
- These scaffolds effectively support osteoblast proliferation, mineralization, and activity in vitro.
- The developed material offers a viable strategy for engineering bioartificial bone tissues.
