Electric Field Induced Isolation, Release and Re-capture of Tumor Cells

No Thumbnail Available
File version
Author(s)
Dey, Shuvashis
Vaidyanathan, Ramanathan
Carrascosa, Laura G
Shiddiky, Muhammad JA
Trau, Matt
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
2016
Size
File type(s)
Location
License
Abstract

Profiling tumor cells present in blood based on multiple tumor-relevant markers can identify specific subpopulations of tumor cells and provide extensive information on the tumor status. Herein we present a simple approach for the analysis of tumor cells based on a combination of alternating current electrohydrodynamic (ac-EHD)-induced fluid flow for capture, release, and subsequent recapture of cells from biological fluids. Initially, tumor cell isolation was achieved using an epithelial cell adhesion molecule (EpCAM) antibody-modified ac-EHD device. Following this, captured cells were released using a DC potential pulse. Subsequently, the released cells were recaptured under ac-EHD on a separate device to specifically capture tumor derived (e.g., human epidermal growth factor receptor 2 (HER2)) cell population. We demonstrate this proof-of-concept approach for the analysis of breast cancer cells from blood samples using a purpose-built ac-EHD device. Under the optimal ac-EHD field strength, 64.8 ± 2.6% cell were captured using an anti-EpCAM functionalized device. The subsequent application of a DC potential of 1.4 V (vs Ag/AgCl) enabled 84.5 ± 3.2% release of these captured cells. Cell viability experiments showed minimal loss or damage to these released cells (14.2 ± 2%). Approximately 42.9 ± 2.4% of the released cells was recaptured using an anti-HER2 functionalized device. The device performance was reproducible with an interassay reproducibility of RSD = 6.01%, n = 3, for capture and RSD = 2.1%, n = 3, for release, respectively. We predict that this approach can potentially find its relevance as a simple tool to capture cells and efficiently retrieve these cells for subsequent analysis.

Journal Title

ACS Sensors

Conference Title
Book Title
Edition
Volume

1

Issue

4

Thesis Type
Degree Program
School
Publisher link
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
Item Access Status
Note
Access the data
Related item(s)
Subject

Analytical chemistry

Analytical chemistry not elsewhere classified

Biomedical engineering

Nanotechnology

Persistent link to this record
Citation
Collections