Overview on the Development of Alkaline-Phosphatase-Linked Optical Immunoassays

Author:

Liu Lin1ORCID,Chang Yong1ORCID,Lou Jiaxin1,Zhang Shuo1,Yi Xinyao2ORCID

Affiliation:

1. College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, China

2. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China

Abstract

The drive to achieve ultrasensitive target detection with exceptional efficiency and accuracy requires the advancement of immunoassays. Optical immunoassays have demonstrated significant potential in clinical diagnosis, food safety, environmental protection, and other fields. Through the innovative and feasible combination of enzyme catalysis and optical immunoassays, notable progress has been made in enhancing analytical performances. Among the kinds of reporter enzymes, alkaline phosphatase (ALP) stands out due to its high catalytic activity, elevated turnover number, and broad substrate specificity, rendering it an excellent candidate for the development of various immunoassays. This review provides a systematic evaluation of the advancements in optical immunoassays by employing ALP as the signal label, encompassing fluorescence, colorimetry, chemiluminescence, and surface-enhanced Raman scattering. Particular emphasis is placed on the fundamental signal amplification strategies employed in ALP-linked immunoassays. Furthermore, this work briefly discusses the proposed solutions and challenges that need to be addressed to further enhance the performances of ALP-linked immunoassays.

Funder

Program for Innovative Research Team of Science and Technology in the University of Henan Province

Central South University Innovation-Driven Research Programme

Publisher

MDPI AG

Subject

Chemistry (miscellaneous),Analytical Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Molecular Medicine,Drug Discovery,Pharmaceutical Science

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