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Sulfated glycopeptide nanostructures for multipotent protein activation
Sungsoo S Lee1,2, Timmy Fyrner1, Feng Chen1
1Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois 60611, USA.
Nature Nanotechnology
|June 27, 2017
Summary
New supramolecular nanostructures bind key proteins, significantly enhancing bone regeneration. These bioactive glycopeptide nanostructures offer a promising, low-dose therapeutic approach for tissue repair and future protein-based therapies.
Area of Science:
- Biochemistry
- Materials Science
- Biotechnology
Background:
- Proteins binding polysaccharides are crucial for biological functions, including development and tissue repair.
- Sulfated polysaccharides are recognized by specific protein-binding domains involved in these processes.
Purpose of the Study:
- To create and characterize novel supramolecular sulfated glycopeptide nanostructures.
- To investigate the binding capabilities of these nanostructures with various proteins.
- To evaluate the therapeutic potential of these nanostructures in bone regeneration.
Main Methods:
- Synthesis of supramolecular glycopeptide nanostructures displaying trisulfated monosaccharides.
- Assessment of protein binding to the nanostructures without altering their structural integrity.
- In vivo evaluation of bone regeneration in a spinal fusion animal model.
Main Results:
- The glycopeptide nanostructures successfully bound five critical proteins with distinct polysaccharide-binding domains.
- Nanostructure binding did not disrupt their filamentous shape or internal beta-sheet backbone.
- Significantly amplified signaling of bone morphogenetic protein 2 compared to heparin.
- Promoted spinal bone regeneration at a 100-fold lower protein dose than controls.
Conclusions:
- Supramolecular sulfated glycopeptide nanostructures exhibit high bioactivity and protein-binding capacity.
- These nanostructures demonstrate potent bone regenerative capabilities at significantly reduced doses.
- The findings suggest potential for future protein-based therapies utilizing these novel nanostructures.
