A New Phosphorylated Protein Analysis Strategy based on Trypsin Encapsulated in Metal-Organic Frameworks with High...

Area of Science:

• Biochemistry
• Proteomics
• Materials Science

Background:

• Phosphoproteomics is vital for clinical diagnosis but hindered by slow traditional methods.
• Traditional bottom-up phosphoprotein analysis is time-consuming due to complex pretreatment and protease self-hydrolysis.

Purpose of the Study:

• To develop a simplified and rapid strategy for phosphorylated protein analysis.
• To improve the efficiency of phosphopeptide generation and capture.

Main Methods:

• Encapsulation of trypsin (Try) within a Metal-Organic Framework, ZIF-L(Co).
• Utilizing the hydrophobic nature of ZIF-L(Co) for protein unfolding and accelerated digestion.
• Leveraging Co(II) nodes for selective capture of phosphorylated proteins and phosphopeptides.

Main Results:

• Reduced pretreatment time for phosphopeptides from over 20 hours to 3.4 hours.
• Demonstrated equivalent performance to traditional methods in analyzing biosamples like milk, egg yolk, and serum.
• Successful application in bioanalysis, showcasing potential for clinical diagnosis.

Conclusions:

• The ZIF-L(Co)-encapsulated trypsin strategy offers a significantly faster and simplified workflow for phosphoprotein analysis.
• This method provides a powerful tool for proteomics, advancing biomedical research and clinical diagnostics.
• The selective capture of phosphopeptides by Co(II) nodes enhances analytical efficiency.