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"Targeting the ""untargetable"" by merging biological and chemical compound libraries"

Objective

"Genome sequencing combined with powerful new research technologies has greatly expanded the number of potential drug targets, offering enormous opportunities to address unmet medical needs. However, for proteins with flat, featureless surfaces or for protein-protein interactions, it has been difficult to impossible to generate ligands based on classical small molecules, hindering their evaluation as targets and the development of drugs.

Herein, we propose a new method and its application for targeting the so-called ""undruggable"" proteins by tapping into a new chemical space, generated by ""merging"" biological and chemical compound libraries. In brief, millions of short cyclic peptides (4–6 amino acids) genetically encoded by phage display (generated with methods we established previously) will be expanded by combinatorially attaching via lateral groups > 1000 different chemical fragments in separate wells of microwell plates. We will develop a strategy that combines the elements of i) automation, ii) liquid transfer by acoustic dispensing, iii) single-round phage display panning, iv) ""phage PCR"" and a primer coding strategy, v) next-generation sequencing (NGS) and vi) computational sequence analysis to perform phage display selections with a library comprising > 1000 non-natural building blocks.

We expect that this technology will deliver ligands to challenging proteins and facilitate their evaluation as drug targets. The ligands are kept small on purpose, below one kDa, and the polarity is limited so that they are more likely to be cell permeable and so they may directly serve as leads for the generation of oral drugs.
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Call for proposal

ERC-2020-ADG
See other projects for this call

Funding Scheme

ERC-ADG - Advanced Grant

Host institution

ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
Address
Batiment Ce 3316 Station 1
1015 Lausanne
Switzerland
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 2 239 500

Beneficiaries (1)

ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
Switzerland
EU contribution
€ 2 239 500
Address
Batiment Ce 3316 Station 1
1015 Lausanne
Activity type
Higher or Secondary Education Establishments