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Highly Sensitive Labeling, Clickable Functionalization, and Glycoengineering of the MUC1 Neighboring System.

Gang Wang1,2, Ying Chen3, Yuan Wei1

  • 1Medical Science and Technology Innovation Center, Shandong First Medical University, Jinan 250117, China.

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Summary
This summary is machine-generated.

A novel wash-type affinity-primed proximity labeling (WAPL) strategy offers superior MUC1 protein labeling efficiency. This method enhances detection sensitivity and enables advanced glycoengineering for therapeutic development.

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Area of Science:

  • Biochemistry
  • Chemical Biology
  • Molecular Biology

Background:

  • The MUC1 protein is a key target in cancer diagnostics and therapeutics.
  • Existing proximity labeling methods face limitations in efficiency and sensitivity.
  • Surface engineering of MUC1 requires precise and efficient labeling techniques.

Purpose of the Study:

  • To introduce and validate a novel wash-type affinity-primed proximity labeling (WAPL) strategy.
  • To enhance the labeling efficiency and detection sensitivity for MUC1 protein.
  • To establish a versatile platform for MUC1 surface engineering and glycoengineering.

Main Methods:

  • Utilized peroxidase and a MUC1-selective aptamer for targeted covalent labeling.
  • Implemented a two-level labeling upgrade system modifying biotin-phenol substrates.
  • Incorporated click chemistry (dibenzoazacyclooctynylation, alkynylation, trans-cyclooctenylation) and lactose-based glycoengineering.

Main Results:

  • WAPL demonstrated significantly higher labeling efficiency compared to nonwash-type methods.
  • Achieved signal amplification through multiple covalent labeling events per recognition.
  • Successfully performed cell-compatible glycoengineering of MUC1 using lactose modification.

Conclusions:

  • The WAPL strategy provides a robust and efficient platform for MUC1 protein labeling and surface engineering.
  • This method enhances detection sensitivity, crucial for monitoring subtle biological changes.
  • The WAPL platform facilitates diverse monitoring, regulation, and therapeutic strategies for MUC1-related diseases.