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Related Experiment Video

Updated: May 5, 2026

Self-reporting Scaffolds for 3-Dimensional Cell Culture
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Self-reporting scaffolds for 3-dimensional cell culture.

Helen Harrington1, Felicity R A J Rose, Jonathan W Aylott

  • 1School of Molecular Medical Sciences, University of Nottingham.

Journal of Visualized Experiments : Jove
|December 5, 2013
PubMed
Summary

Researchers developed pH-responsive nanosensors integrated into PLGA scaffolds for 3D cell cultures. These sensors monitor microenvironmental and intracellular pH, enhancing the study of cellular behavior in biomimetic environments.

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Nanotechnology

Background:

  • Three-dimensional (3D) cell culturing better mimics in vivo conditions than 2D cultures, improving the study of molecular events and cell-cell interactions.
  • Maintaining cell viability in 3D scaffolds requires careful control of culture conditions, including oxygen and pH, due to potential analyte gradients.
  • Monitoring microenvironmental and intracellular pH is crucial for understanding cellular responses in complex 3D constructs.

Purpose of the Study:

  • To develop biocompatible, pH-responsive sol-gel nanosensors for integration into 3D cell culture scaffolds.
  • To incorporate these nanosensors into poly(lactic-co-glycolic acid) (PLGA) electrospun scaffolds for mammalian cell culture.
  • To demonstrate the utility of these nanosensors for monitoring both scaffold microenvironmental pH and intracellular pH (pHi) within cultured cells.

Main Methods:

  • Preparation of biocompatible pH-responsive sol-gel nanosensors.
  • Incorporation of nanosensors into PLGA electrospun scaffolds.
  • Culturing mammalian cells on the nanosensor-functionalized scaffolds.
  • Delivery of nanosensors into the intracellular environment of cultured cells.

Main Results:

  • Successful preparation and incorporation of pH-responsive nanosensors into PLGA scaffolds.
  • Demonstrated ability of the scaffolds to support mammalian cell culture.
  • Successful intracellular delivery of nanosensors, enabling pHi monitoring.
  • Validation of nanosensors as tools for assessing microenvironmental and intracellular pH in 3D cell cultures.

Conclusions:

  • Nanosensor-functionalized PLGA scaffolds provide a viable platform for 3D cell culture with integrated pH monitoring.
  • The developed system allows for real-time assessment of both extracellular and intracellular pH within 3D cellular constructs.
  • This technology enhances the study of cellular physiology and responses in biomimetic environments.