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Related Concept Videos

Bone Remodeling01:40

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.

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Updated: Jun 19, 2026

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect
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Three-Dimensional-Printed Biomimetic Scaffolds for Investigating Osteoblast-Like Cell Interactions in Simulated

Eleonora Zenobi1,2, Giulia Gramigna3, Elisa Scatena1,2

  • 1E. Amaldi Foundation, Via del Politecnico snc, 00133 Rome, Italy.

Journal of Functional Biomaterials
|August 27, 2025
PubMed
Summary

3D-printed scaffolds mimicking bone structures enhance osteoblast-like cell growth under simulated microgravity. Dynamic culture conditions amplify scaffold architecture effects, showing promise for osteoporosis and microgravity bone loss research.

Keywords:
3D-printed bone-like scaffoldsbiomimeticsmicrogravity conditions

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Biotechnology

Background:

  • Three-dimensional (3D) cell culture systems offer advanced in vitro models for studying cellular behavior.
  • Osteoporosis and microgravity-induced bone loss significantly impact bone health, necessitating better research models.

Purpose of the Study:

  • To investigate human osteoblast-like cell interactions with 3D-printed scaffolds simulating physiological and osteoporotic bone.
  • To assess the influence of scaffold architecture and dynamic culture conditions on cell behavior under simulated microgravity.

Main Methods:

  • 3D printing of polylactic acid scaffolds with physiological and osteoporotic architectures using fused deposition modeling.
  • Culturing human osteoblast-like cells (SAOS-2, U2OS) on scaffolds under static and dynamic simulated microgravity (Rotary Cell Culture System - RCCS).
  • Evaluating cell adhesion, proliferation, and metabolic activity using specific assays and measuring inflammatory markers.

Main Results:

  • Both scaffold types supported osteoblast-like cell adhesion and growth.
  • High-porosity osteoporotic scaffolds showed a threefold increase in cell colonization under dynamic conditions.
  • Dynamic culture enhanced surface interaction, amplifying scaffold architecture effects on cell behavior.
  • The system demonstrated biocompatibility with sustained cell growth and no detectable inflammatory response.

Conclusions:

  • Scaffold microstructure and dynamic culture significantly influence osteoblast-like cell behavior.
  • The combination of 3D-printed scaffolds and RCCS is a promising platform for studying bone remodeling in osteoporosis and microgravity.
  • Findings support the development of advanced in vitro models for bone degeneration research and potential countermeasures.