Assay methods based on proximity-enhanced reactions for detecting non-nucleic acid molecules

Area of Science:

• Biochemistry
• Molecular Biology
• Assay Development

Background:

• Accurate detection of biological molecules (nucleic acids, proteins, small molecules) is crucial for disease diagnosis and treatment.
• Current methods for non-nucleic acid detection are often time-consuming and require specialized expertise.
• Simple homogeneous assays are common for nucleic acid detection but not for other molecule types.

Purpose of the Study:

• To review recent advancements in proximity-enhanced reactions (PERs) for detecting non-nucleic acid molecules.
• To highlight three specific PER-based assays: proximity ligation assay, proximity extension assay, and proximity proteolysis assay.
• To discuss the potential of PERs in simplifying biological molecule analysis.

Main Methods:

• Review of literature focusing on proximity-enhanced reactions (PERs).
• Analysis of three distinct PER-based assays: proximity ligation assay (PLA), proximity extension assay (PEA), and proximity proteolysis assay (PPA).
• Discussion of the application of these assays in homogeneous liquid-phase detection.

Main Results:

• PERs enable the detection of non-nucleic acid molecules in a homogeneous liquid phase.
• PLA, PEA, and PPA are effective methods for analyzing proteins and small molecules.
• These assays offer a single-step procedure, reducing complexity and time.

Conclusions:

• Proximity-enhanced reactions represent a significant advancement in the detection of non-nucleic acid biomarkers.
• The reviewed assays (PLA, PEA, PPA) provide efficient and accessible alternatives to traditional methods.
• PERs hold promise for streamlining diagnostic and research workflows in molecular biology.