CHAPTER 9: Gold-nanoparticles Interface-based Electrochemical Immunosensors for Tumor Biomarkers

Mohamed Ibrahim Halawa, Baohua Lou, Guobao Xu

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The implementation of gold nanoparticles (AuNPs) in electrochemical immunoassays of cancer biomarkers has been in place for several years. AuNPs play crucial roles in the development of a convenient interface for the immobilization of antibodies, facilitating the electron transfer process through a developed interface and signal amplification by several orders of magnitude. Additionally, because of the unique properties of AuNPs, AuNPs-based electrochemical immunosensors offer ultrasensitive, biocompatible, rapid and inexpensive sensing approaches with the feasibility of on-line monitoring and simultaneous sensing of multiple cancer biomarkers. Herein, we summarize different synthetic strategies of AuNPs and their main roles in the design of electrochemical immunosensors. Moreover, the different applications of AuNPs in developing electrochemical immunosensors for very common tumor biomarkers such as PSA, CEA, AFP, CA125 and hCG are briefly discussed in this chapter.

Original languageEnglish
Title of host publicationCarbon-based Nanomaterials in Analytical Chemistry
EditorsMinhaz Uddin Ahmed, Mohammed Zourob, Eiichi Tamiya
PublisherRoyal Society of Chemistry
Pages186-218
Number of pages33
Edition14
ISBN (Electronic)9781788011020, 9781788014373
DOIs
Publication statusPublished - 2019
Externally publishedYes

Publication series

NameRSC Detection Science
Number14
Volume2019-January
ISSN (Print)2052-3068
ISSN (Electronic)2052-3076

ASJC Scopus subject areas

  • Bioengineering
  • Pathology and Forensic Medicine
  • General Chemistry
  • Environmental Chemistry
  • General Biochemistry,Genetics and Molecular Biology
  • Pollution
  • Biochemistry, medical

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