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Related Experiment Video

Updated: Jul 8, 2026

Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
05:41

Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications

Published on: February 23, 2017

In vitro study on different cell response to spherical hydroxyapatite nanoparticles.

Qiang Fu1, Mohamed N Rahaman, Nai Zhou

  • 1Department of Materials Science and Engineering University Missouri-Rolla, 223 McNutt Hall, Rolla, Missouri 65409, USA. qf7r9@umr.edu

Journal of Biomaterials Applications
|January 16, 2008
PubMed
Summary

Synthesized spherical hydroxyapatite (HA) nanoparticles show enhanced biocompatibility for bone defect repair. These HA nanoparticles are effective for bone tumor removal with minimal adverse effects.

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Orthopedic Surgery

Background:

  • Hydroxyapatite (HA) is a key biomaterial for bone defect filling and prosthetic implants due to its biocompatibility.
  • Micro-sized HA particles, particularly needle-shaped ones, can trigger inflammatory responses.
  • Limited research exists on the cellular responses to spherical HA nanoparticles.

Purpose of the Study:

  • To chemically and physically characterize synthesized HA nanoparticles.
  • To investigate the in vitro cellular responses to these nanoparticles.
  • To evaluate their potential for bone defect repair and tumor removal.

Main Methods:

  • Synthesis and characterization of HA nanoparticles using X-ray diffraction, electron microscopy, nitrogen adsorption, and Fourier transform infrared spectroscopy.
  • In vitro cell proliferation assays using L929 fibroblasts.
  • In vitro cytotoxicity assays using U2-OS cells to determine inhibition rates and IC50 values.

Main Results:

  • Synthesized HA nanoparticles were spherical, with sizes of 20-40 nm and a specific surface area of 75 m²/g.
  • L929 cell proliferation indicated superior biocompatibility compared to commercial HA.
  • U2-OS cell tests revealed a time- and concentration-dependent inhibition rate, with an IC50 of 50.8 µg/mL at 72 hours.

Conclusions:

  • The synthesized spherical nanocrystalline HA particles exhibit excellent biocompatibility.
  • They demonstrate efficacy in inhibiting tumor cells, suggesting potential for bone tumor tumorectomy repair.
  • These HA nanoparticles offer a promising biomaterial with minimal adverse effects for orthopedic applications.