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Article
CIP2A Immunosensor Comprised of Vertically-aligned Carbon Nanotube Interdigitated Electrodes Towards Point-of-Care Oral Cancer Screening
Biosensors and Bioelectronics
  • Shaowei Ding, Iowa State University
  • Suprem R. Das, Iowa State University
  • Benjamin J. Brownlee, Brigham Young University
  • Kshama Parate, Iowa State University
  • Taylor Davis, Brigham Young University
  • Loreen Stromberg, Iowa State University
  • Edward K.L. Chan, University of Florida
  • Joseph Katz, University of Florida
  • Brian D. Iverson, Brigham Young University
  • Jonathan C. Claussen, Iowa State University
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
1-1-2018
DOI
10.1016/j.bios.2018.04.016
Abstract

Vertically aligned carbon nanotube array (VANTA) coatings have recently garnered much attention due in part to their unique material properties including light absorption, chemical inertness, and electrical conductivity. Herein we report the first use of VANTAs grown via chemical vapor deposition in a 2D interdigitated electrode (IDE) footprint with a high height-to-width aspect ratio (3:1 or 75:25 µm). The VANTA-IDE is functionalized with an antibody (Ab) specific to the human cancerous inhibitor PP2A (CIP2A)—a salivary oncoprotein that is associated with a variety of malignancies such as oral, breast, and multiple myeloma cancers. The resultant immunosensor is capable of detecting CIP2A label-free across a wide linear sensing range (1 –100 pg/mL) with a detection limit of 0.24 pg/mL within saliva supernatant—a range that is more sensitive than the corresponding CIP2A enzyme linked immunosorbent assay (ELISA). These results help pave the way for rapid cancer screening tests at the point-of-care (POC) such as for the early-stage diagnosis of oral cancer at a dentist's office.

Comments

This is a manuscript of an article published as Ding, Shaowei, Suprem R. Das, Benjamin J. Brownlee, Kshama Parate, Taylor Davis, Loreen R. Stromberg, Edward KL Chan, Joseph Katz, Brian D. Iverson, and Jonathan C. Claussen. "CIP2A Immunosensor Comprised of Vertically-aligned Carbon Nanotube Interdigitated Electrodes Towards Point-of-Care Oral Cancer Screening." Biosensors and Bioelectronics (2018). DOI: 10.1016/j.bios.2018.04.016. Posted with permission.

Creative Commons License
Creative Commons Attribution-Noncommercial-No Derivative Works 4.0
Copyright Owner
Elsevier B.V.
Language
en
File Format
application/pdf
Citation Information
Shaowei Ding, Suprem R. Das, Benjamin J. Brownlee, Kshama Parate, et al.. "CIP2A Immunosensor Comprised of Vertically-aligned Carbon Nanotube Interdigitated Electrodes Towards Point-of-Care Oral Cancer Screening" Biosensors and Bioelectronics (2018)
Available at: http://works.bepress.com/jonathan_claussen/41/