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Updated: Jun 8, 2026

A Versatile Automated Platform for Micro-scale Cell Stimulation Experiments

A Versatile Automated Platform for Micro-scale Cell Stimulation Experiments

Published on: August 6, 2013

SERSµDrop: A Platform to Study Cell-Cell Communication via SERS Imaging.

Paula Piñeiro^1,2,3, Judith Langer^1,3, Joaquin Seras-Franzoso^4,5

¹CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, 20014, Spain.

Small (Weinheim an Der Bergstrasse, Germany)

|November 19, 2025

Summary

This summary is machine-generated.

Researchers developed SERSµDrop, a microfluidic platform, to track cell-cell communication via extracellular vesicles (EVs) at single-cell resolution. This tool precisely monitors EV transfer between cancer cells and fibroblasts, advancing cancer research.

Keywords:

SERS imaging SERS tags cell encapsulation exocytosis extracellular vesicles microdroplets

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Area of Science:

Biotechnology
Cell Biology
Cancer Research

Background:

Cell-cell communication is vital in cancer progression and therapeutic resistance.
Extracellular vesicles (EVs) mediate intercellular communication by transferring biomolecules.
Existing methods lack the resolution to study EV exchange at the single-cell level.

Purpose of the Study:

To introduce SERSµDrop, a novel microfluidic platform for high-resolution monitoring of intercellular communication.
To enable real-time tracking of EV transfer between different cell types.
To overcome limitations of current techniques in studying EV-mediated signaling.

Main Methods:

Co-encapsulation of MCF-7 breast cancer cells and human dermal fibroblasts (HDFs) in microdroplets.
Labeling cells with gold nanostars (AuNSt) functionalized with specific Raman reporters and surface coatings.
Utilizing surface-enhanced Raman spectroscopy (SERS) for high-resolution spatial mapping of EV transfer.

Main Results:

Demonstrated directional transfer of AuNSt@AB-tagged EVs from MCF-7 cells to HDFs over 4 days.
Confirmed limited exocytic behavior of AuNSt@PA within HDFs.
Validated the platform's ability to maintain cell viability and microdroplet integrity.

Conclusions:

SERSµDrop provides unprecedented spatial and temporal resolution for studying EV-mediated cell-cell communication.
The platform supports high-throughput, multiplexed detection of EV exchange in a confined environment.
This technology offers a powerful tool for advancing cancer research and understanding intercellular signaling.