Functional detection of proteins by caged aptamers

Area of Science:

• Biochemistry
• Molecular Biology
• Analytical Chemistry

Background:

• Diagnostic assays often compromise analyte structure and function.
• Apta-polymerase chain reaction (PCR) quantifies targets using aptamers but can affect analyte integrity.
• Caged aptamers offer light-controlled activity for potential preservation of target molecules.

Purpose of the Study:

• To develop a method for quantitative and functional analyte assessment.
• To utilize caged aptamers as templates in apta-PCR to preserve analyte structure.
• To enable broader applications in proteomics and clinical diagnostics.

Main Methods:

• Employing caged aptamers with photolabile groups as templates in apta-PCR.
• Utilizing light irradiation for mild elution of aptamers.
• Assessing both quantitative and functional aspects of analytes post-analysis.

Main Results:

• Demonstrated successful quantitative assessment of analytes.
• Showcased preservation of analyte native structure and function.
• Validated the generalized applicability of the caged aptamer approach.

Conclusions:

• Caged aptamers enable mild elution, preserving analyte integrity for further analysis.
• The apta-PCR method with caged aptamers supports both quantitative and functional assessments.
• This technique holds broad potential for proteomics and clinical diagnostics.