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Garcia MP, Shahid A, Chen JY, et al. Evaluating Inhibition of the Epidermal Growth Factor (EGF)-Induced Response of Mutant MCF10A Cells with an Acoustic Sensor. Biosensors (Basel). 2012;2(4):448-64doi: 10.3390/bios2040448.
Garcia, M. P., Shahid, A., Chen, J. Y., & Xi, J. (2012). Evaluating Inhibition of the Epidermal Growth Factor (EGF)-Induced Response of Mutant MCF10A Cells with an Acoustic Sensor. Biosensors, 2(4), 448-64. https://doi.org/10.3390/bios2040448
Garcia, Marcela P, et al. "Evaluating Inhibition of the Epidermal Growth Factor (EGF)-Induced Response of Mutant MCF10A Cells with an Acoustic Sensor." Biosensors vol. 2,4 (2012): 448-64. doi: https://doi.org/10.3390/bios2040448
Garcia MP, Shahid A, Chen JY, Xi J. Evaluating Inhibition of the Epidermal Growth Factor (EGF)-Induced Response of Mutant MCF10A Cells with an Acoustic Sensor. Biosensors (Basel). 2012 Nov 13;2(4):448-64. doi: 10.3390/bios2040448. PMID: 25586035; PMCID: PMC4263556.
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Biosensors (Basel). 2012 Nov 13;2(4):448-64. doi: 10.3390/bios2040448.

Evaluating Inhibition of the Epidermal Growth Factor (EGF)-Induced Response of Mutant MCF10A Cells with an Acoustic Sensor.

Biosensors

Marcela P Garcia, Ammar Shahid, Jennifer Y Chen, Jun Xi

Affiliations

  1. Department of Chemistry, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA. [email protected].
  2. Department of Biology, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA. [email protected].
  3. Department of Chemistry, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA. [email protected].
  4. Department of Chemistry, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA. [email protected].

PMID: 25586035 PMCID: PMC4263556 DOI: 10.3390/bios2040448

Abstract

Many cancer treatments rely on inhibition of epidermal growth factor (EGF)-induced cellular responses. Evaluating drug effects on such responses becomes critical to the development of new cancer therapeutics. In this report, we have employed a label-free acoustic sensor, the quartz crystal microbalance with dissipation monitoring (QCM-D), to track the EGF-induced response of mutant MCF10A cells under various inhibitory conditions. We have identified a complex cell de-adhesion process, which can be distinctly altered by inhibitors of signaling pathways and cytoskeleton formation in a dose-dependent manner. The dose dependencies of the inhibitors provide IC50 values which are in strong agreement with the values reported in the literature, demonstrating the sensitivity and reliability of the QCM-D as a screening tool. Using immunofluorescence imaging, we have also verified the quantitative relationship between the ΔD-response (change in energy dissipation factor) and the level of focal adhesions quantified with the areal density of immunostained vinculin under those inhibitory conditions. Such a correlation suggests that the dynamic restructuring of focal adhesions can be assessed based on the time-dependent change in ΔD-response. Overall, this report has shown that the QCM-D has the potential to become an effective sensing platform for screening therapeutic agents that target signaling and cytoskeletal proteins.

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