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Updated: May 30, 2025

Self-Assembly of Gamma-Modified Peptide Nucleic Acids into Complex Nanostructures in Organic Solvent Mixtures

Self-Assembly of Gamma-Modified Peptide Nucleic Acids into Complex Nanostructures in Organic Solvent Mixtures

Published on: June 26, 2020

Temperature-driven CsgA-enhanced mutant enable distinct self-assembly.

Yao Chen¹, Li Yang², Zijian Xu²

¹State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China; College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China.

International Journal of Biological Macromolecules

|January 30, 2025

Summary

This summary is machine-generated.

A novel protein fiber, CsgA-pro, acts as a "molecular glue" for biotherapy. This material, when loaded with gold nanoparticles onto gauze, effectively promotes wound healing and exhibits antibacterial properties.

Keywords:

Au NPs Biotherapy CsgA-pro Molecular glue Wound

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Area of Science:

Biomaterials Science
Protein Engineering
Nanotechnology

Background:

Functional coatings are crucial in technology, but their efficacy relies on suitable media.
Developing versatile biomaterials for advanced applications remains a key challenge.

Purpose of the Study:

To engineer a novel protein-based molecular glue, CsgA-pro, for biotherapy.
To demonstrate the utility of CsgA-pro as a scaffold for functional nanomaterials.
To evaluate the therapeutic potential of CsgA-pro-based constructs in wound healing.

Main Methods:

Engineered a CsgA variant (CsgA-pro) with temperature-dependent fiber formation and molecular glue properties.
Immobilized CsgA-pro-GFP onto gauze and functionalized with gold nanoparticles (Au NPs).
Assessed antibacterial activity, cell migration (L929, HUVEC), and wound healing efficacy in vivo.

Main Results:

CsgA-pro demonstrated a temperature-driven transition, forming protein fibers and acting as a molecular glue.
Au NP-loaded gauze exhibited potent antibacterial effects.
Au NP-loaded gauze significantly accelerated wound healing and promoted cell migration.

Conclusions:

CsgA-pro is a versatile platform for developing advanced functional materials.
CsgA-pro-based Au NP scaffolds show significant therapeutic potential for wound healing.
This approach offers broad applicability in biocatalysis, immobilization, and biomedical advancements.