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Related Concept Videos

Essential Minerals for Bone Health01:31

Essential Minerals for Bone Health

The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...

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Related Experiment Video

Updated: May 10, 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

Dual functional selenium-substituted hydroxyapatite.

Yanhua Wang1, Jun Ma, Lei Zhou

  • 1Advanced Biomaterials and Tissue Engineering Center , Huazhong University of Science and Technology , Wuhan 430074 , People's Republic of China.

Interface Focus
|June 7, 2013
PubMed
Summary
This summary is machine-generated.

Selenium-substituted hydroxyapatite nanoparticles show dual functions. These nanoparticles support bone marrow stem cell growth while inducing osteosarcoma cell apoptosis, offering potential for bone cancer treatment.

Keywords:
bone repairhydroxyapatitemalignant bone tumournanoparticlesselenium

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Cancer Biology

Background:

  • Hydroxyapatite (HA) nanoparticles exhibit biological functions.
  • Trace element doping enhances HA properties.
  • Osteosarcoma treatment requires effective bone graft materials.

Purpose of the Study:

  • To synthesize selenium-substituted hydroxyapatite nanoparticles (Se-HA NPs).
  • To evaluate the dual biological functions of Se-HA NPs in vitro.
  • To explore Se-HA NPs as potential bone graft materials for osteosarcoma treatment.

Main Methods:

  • Facile co-precipitation method for Se-HA NP synthesis.
  • Characterization of nanoparticle size, crystallinity, and selenium content.
  • In vitro assays for osteosarcoma cell apoptosis and bone marrow stem cell growth.

Main Results:

  • Selenium incorporation into HA nanoparticles was successful.
  • Se-HA NPs maintained similar size and crystallinity to pure HA nanoparticles at low selenium content.
  • Se-HA NPs demonstrated enhanced apoptosis induction in osteosarcoma cells compared to pure HA.
  • Se-HA NPs supported the growth of bone marrow stem cells.
  • Apoptosis induction mechanism involves increased reactive oxygen species and decreased mitochondrial membrane potential.

Conclusions:

  • Selenium-substituted hydroxyapatite nanoparticles possess dual therapeutic potential.
  • These nanoparticles can promote normal bone cell growth and induce cancer cell death.
  • Se-HA NPs represent a promising biomaterial for osteosarcoma treatment strategies.