On-chip Non-invasive and Label-free Cell Discrimination by Impedance Spectroscopy

Overview

Journal Cell Prolif

Date 2008 Aug 5

PMID 18673370

Citations 14

Authors

G Schade-Kampmann

A Huwiler

M Hebeisen

T Hessler

M Di Berardino

Affiliations

Soon will be listed here.

Abstract

Objectives: Many flow-cytometric cell characterization methods require costly markers and colour reagents. We present here a novel device for cell discrimination based on impedance measurement of electrical cell properties in a microfluidic chip, without the need of extensive sample preparation steps and the requirement of labelling dyes.

Materials And Methods, Results: We demonstrate that in-flow single cell measurements in our microchip allow for discrimination of various cell line types, such as undifferentiated mouse fibroblasts 3T3-L1 and adipocytes on the one hand, or human monocytes and in vitro differentiated dendritic cells and macrophages on the other hand. In addition, viability and apoptosis analyses were carried out successfully for Jurkat cell models. Studies on several species, including bacteria or fungi, demonstrate not only the capability to enumerate these cells, but also show that even other microbiological life cycle phases can be visualized.

Conclusions: These results underline the potential of impedance spectroscopy flow cytometry as a valuable complement to other known cytometers and cell detection systems.

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