Piperidine-based glycodendrons as protein N-glycan prosthetics

Area of Science:

• Biochemistry
• Biotechnology
• Protein Engineering

Background:

• Homogeneously glycosylated proteins are crucial for understanding glycoform-specific activity and developing advanced protein therapeutics.
• Current methods for protein glycosylation can be complex and yield heterogeneous products.

Purpose of the Study:

• To present a novel glycodendron prosthetic for site-selective attachment to recombinant proteins, creating homogeneous glycoprotein mimics.
• To design a dendrimer scaffold and attachment point that computationally resemble native N-glycan architecture.

Main Methods:

• Computational modeling was used to design the glycodendron scaffold and protein attachment site.
• Three piperidine-melamine glycodendrimers were synthesized using a chemoenzymatic approach.
• The synthesized glycodendrimers were appended to human growth hormone and the Fc region of human IgG.

Main Results:

• Successful synthesis of novel piperidine-melamine glycodendrimers.
• Site-selective attachment of glycodendrons to recombinant proteins, yielding homogeneous glycoprotein mimics.
• Demonstration of the approach using human growth hormone and IgG Fc region.

Conclusions:

• The developed glycodendron prosthetic offers a new strategy for creating homogeneous glycoproteins.
• This technology enables the production of engineered biosimilars with defined glycodendrimer structures.
• The findings open avenues for improved protein-based therapeutics with predictable activity.