9G DNAChip: a platform for the efficient detection of proteins

Area of Science:

• Biochemistry
• Analytical Chemistry
• Immunodiagnostics

Background:

• Accurate detection of disease biomarkers like C-reactive protein (CRP) and prostate-specific antigen (PSA) is crucial for early diagnosis.
• Existing methods for multiplex antigen detection often require amplification, limiting their applicability and increasing complexity.

Purpose of the Study:

• To introduce and validate the DAGON method for sensitive and specific antigen detection.
• To demonstrate the capability of DAGON to differentiate between CRP and PSA at low concentrations.
• To showcase the first-time detection of multiple antigens in protein mixtures without amplification.

Main Methods:

• Development and application of the DAGON method for antigen detection.
• Testing the differentiation capability for CRP and PSA within a concentration range of 1 pg/mL to 10 pg/mL.
• Assessing the detection of multiple antigens (1 pg/mL and 0.1 pg/mL) in complex protein mixtures.

Main Results:

• The DAGON method successfully differentiated CRP and PSA antigens in a buffer matrix within the 1 pg/mL to 10 pg/mL concentration range.
• For the first time, multiple antigens at concentrations of 1 pg/mL and 0.1 pg/mL were detected in a protein mixture.
• Detection was achieved without the need for any amplification techniques, highlighting the method's sensitivity.

Conclusions:

• The DAGON method offers a significant advancement in antigen detection technology.
• It provides a sensitive, specific, and amplification-free approach for differentiating and detecting multiple antigens.
• This method holds promise for improved diagnostic tools and biochemical analyses.