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Related Experiment Video

Updated: Jul 15, 2025

Improved Visualization and Quantitative Analysis of Drug Effects Using Micropatterned Cells
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Compact Micropatterned Chip Empowers Undisturbed and Programmable Drug Addition in High-Throughput Cell Screening.

Yuanyi Zhao1, Yingxue Sun1, Xinjian Xie1

  • 1College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China.

Advanced Materials (Deerfield Beach, Fla.)
|October 4, 2023
PubMed
Summary

This study introduces a novel micropatterned polymer chip for precise, light-controlled drug delivery in high-throughput screening. This platform enables programmable, simultaneous drug addition to multiple droplets, enhancing cell-based assays.

Keywords:
cell screeningdrug releasehost-guest interactionphotoswitchingsuperhydrophobic-hydrophilic pattern

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Area of Science:

  • Materials Science and Engineering
  • Biotechnology and Biomedical Engineering
  • Chemical Engineering

Background:

  • High-throughput screening (HTS) faces challenges in precise, simultaneous multi-drug addition to individual micro-droplets.
  • Existing methods often lack spatial and temporal control, limiting efficiency and accuracy in cell-based assays.

Purpose of the Study:

  • To develop a miniaturized, light-controlled platform for programmable drug addition in cell-based screening.
  • To enable precise spatial and temporal control over drug release in micro-droplet environments.

Main Methods:

  • Fabrication of a micropatterned polymer chip with a superhydrophobic film functionalized via atom transfer radical polymerization.
  • Grafting of azobenzene methacrylate for light-induced conformational changes and creation of host-guest complexes with cyclodextrins.
  • Utilizing digital light processing (DLP) for precise photochemical control over drug release from cyclodextrin-drug conjugates.

Main Results:

  • Demonstrated precise photochemical control over supramolecular complex dissociation and surface patterning using light irradiation.
  • Achieved simultaneous regulation and release of cyclodextrin-bearing drugs across numerous droplets with suspended or adhered cells.
  • Minimized mechanical disruption while ensuring precise control over drug addition timing, dosage, and integration variety.

Conclusions:

  • The developed micropatterned polymer chip offers exceptional spatial and temporal control for light-induced drug delivery in HTS.
  • This programmable approach significantly enhances the precision and efficiency of cell-based screening assays.
  • The technology provides a versatile platform for advanced drug discovery and development workflows.