Active Chemistry Genetics & Molecular Biology

Development of programmable nanomachines towards the enzymatic synthesis of peptide oligonucleotide conjugates

In plain English

AI plain-English summary

Making drugs from biological molecules often requires harsh chemicals, high heat, or non-aqueous solvents that can damage the very molecules being made. This research aims to replace those harsh chemical methods with programmable enzymes—natural catalysts engineered to stitch together peptides and DNA into hybrid molecules called peptide-oligonucleotide conjugates. The problem is that current chemical synthesis of these hybrid biomolecules is incompatible with many delicate biological ingredients. Enzymes offer a gentler, more sustainable alternative, but natural enzymes do not readily perform this specific assembly task. The team at the University of York will adapt and re-engineer enzymes to carry out this synthesis, learning how to control enzyme behaviour in the process. If successful, this work could unlock a cleaner, cheaper way to manufacture next-generation biologic drugs, drug delivery vehicles, and components for biocomputers. It may also lead to new biomaterials. However, this is primarily fundamental science—the immediate goal is to understand how to reprogram enzymes for novel synthesis, not to produce a marketable product. Past fundamental work on enzyme engineering has led to breakthroughs in everything from DNA sequencing to industrial biocatalysis, so the insights here could eventually ripple across pharmaceutical manufacturing and materials science.

View original technical description
This fellowship will be used to establish a multidisciplinary team working at the interface of chemistry, biology and protein engineering at the University of York, UK. The overarching goal of my group's research will be to develop novel approaches for biopolymer synthesis, design and discovery. In the process, we want to unravel the mechanisms that control and modulate the behavior of enzymes and proteins. The methodologies developed and insights gained through this proposal will inform the synthesis strategies for a new generation of therapeutics and biomaterials. Chemical synthesis remains the mainstay for the production of drugs, including the modern, next generation biologics composed of peptides, proteins, DNA, RNA, carbohydrates and their conjugates. Biomolecular conjugates have also found use as nanomaterials, drug delivery vehicles and components of biocomputers. Traditional chemical methods of synthesis require harsh conditions such as high temperature, non-aqueous solvents and non-physiological pH - parameters that are often incompatible with the manufacture of biomolecules. It is therefore imperative that alternative, sustainable strategies are explored. Enzymes present a biocompatible mode of synthesis that is starting to be exploited for the manufacture of biomolecular drugs. In this proposal, my research group will focus on adapting natural enzymes to perform the synthesis of a commonly used hybrid biomolecule - peptide-oligonucleotide conjugate. The knowledge gained will be used to further expand the existing repertoire of biologics and biomaterials.

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Researchers

Purba Mukherjee (Principal Investigator)

Related Research

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Tandem organocatalysis for the bi-functional modification of proteins
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A 3-year PhD studentship in organic systems chemistry and developing catalytic peptide ligation
14-ERASynBio: BioMolecular Origami

Original classification

Fellowship

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