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Related Experiment Video

Updated: May 22, 2026

Large-area Scanning Probe Nanolithography Facilitated by Automated Alignment and Its Application to Substrate Fabrication for Cell Culture Studies
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Large-area Scanning Probe Nanolithography Facilitated by Automated Alignment and Its Application to Substrate Fabrication for Cell Culture Studies

Published on: June 12, 2018

A Dual-Function Micropatterned Gold Platform for Cell Patterning and Optical Imaging Applications.

Swati Tanwar1, Lintong Wu1, Matthew Pittman1,2,3

  • 1Department of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland, 21218, USA.

Sensors and Actuators. B, Chemical
|May 21, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed CELLPAC, a novel cell-patterning platform. This biocompatible system precisely controls cell placement for studying cellular interactions and molecular responses using optical imaging and Raman spectroscopy.

Keywords:
Cell patterningProtein and lipid sensingSurface enhanced Raman spectroscopyfabricationoptical imaging

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Area of Science:

  • Biotechnology
  • Cell Biology
  • Materials Science

Background:

  • Studying cellular interactions in defined microenvironments is crucial for understanding tissue development and disease.
  • Existing platforms lack precise cell placement and integration with optical imaging techniques like Raman spectroscopy.
  • Raman spectroscopy offers label-free molecular analysis but requires compatible cell-patterning solutions.

Purpose of the Study:

  • To develop a high-throughput, biocompatible cell-patterning platform for controlled cell confinement and molecular analysis.
  • To integrate precise spatial control of cell placement with optical imaging compatibility.
  • To enable detailed studies of intercellular communication, migration, and molecular responses in tailored microenvironments.

Main Methods:

  • Developed CELLPAC, a platform integrating micropatterned gold substrates, PEG monolayers, and c-RGD peptides.
  • Created microscale adhesive domains for controlled human keratinocyte confinement and patterning.
  • Utilized the gold substrate for surface-enhanced Raman spectroscopy (SERS) signal enhancement.

Main Results:

  • CELLPAC enabled precise localization and co-localization of single or multiple human keratinocytes into geometric patterns.
  • Demonstrated ~3-fold signal enhancement for intrinsic cellular biomolecules using SERS.
  • Showcased the platform's capability for studying curvature-guided migration and biochemical signaling.

Conclusions:

  • CELLPAC provides a versatile, optically compatible platform for studying microenvironment-dependent cell responses.
  • The dual functionality of cell patterning and molecular probing advances research in tissue engineering, drug screening, and biosensing.
  • This platform facilitates reliable investigation of cellular interactions and molecular mechanisms in well-defined microenvironments.