Publications related to Phage display

Design of an artificial phage-display library based on a new scaffold improved for average stability of the randomized proteins

Scaffold-based protein libraries are designed to be both diverse and rich in functional/folded proteins. However, introducing an extended diversity while preserving stability of the initial scaffold remains a challenge. Here we developed an original approa ...

Nature Portfolio2023

Substrates and Cyclic Peptide Inhibitors of the Oligonucleotide-Activated Sirtuin 7

Alexander Lund Nielsen

The sirtuins are NAD+-dependent lysine deacylases, comprising seven isoforms (SIRT1-7) in humans, which are involved in the regulation of a plethora of biological processes, including gene expression and metabolism. The sirtuins share a common hydrolytic m ...

Wiley-VCH Verlag GmbH2023

Systematic analysis of biomolecular binding reactions using microfluidic systems

Amir Shahein

Transcription factor binding to a single binding site on DNA and its functional consequence in a promoter context are beginning to be relatively well understood. However, binding to clusters of sites has yet to be characterized in depth, and the functional ...

EPFL2022

Generation of a Large Peptide Phage Display Library by Self-Ligation of Whole-Plasmid PCR Product

Christian Heinis, Xudong Kong, Vanessa Carle, Cristina Diaz Perlas, Kaycie Marie Butler

The success of phage display, used for developing target-specific binders based on peptides and proteins, depends on the size and diversity of the library screened, but generating large libraries of phage-encoded polypeptides remains challenging. New pepti ...

2020

Structure and Function of the T4 Spackle Protein Gp61.3

Petr Leiman, Alec Fraser

The bacteriophage T4 genome contains two genes that code for proteins with lysozyme activity-e and 5. Gene e encodes the well-known T4 lysozyme (commonly called T4L) that functions to break the peptidoglycan layer late in the infection cycle, which is requ ...

2020

Development of Tissue Kallikrein Inhibitors for the Treatment of Netherton Syndrome

Patrick Andreas Gonschorek

There is currently no approved treatment for Netherton syndrome, which is a severe, genetic skin disease characterized by chronic inflammation and excessive peeling of the skin. Even though the molecular disease mechanism has been assigned to the unopposed ...

EPFL2019

Structure and transformation of bacteriophage A511 baseplate and tail upon infection of Listeria cells

Sergey Nazarov, Petr Leiman, Ricardo Cesar Guerrero Ferreira

Contractile injection systems (bacteriophage tails, type VI secretions system, R-type pyocins, etc.) utilize a rigid tube/contractile sheath assembly for breaching the envelope of bacterial and eukaryotic cells. Among contractile injection systems, bacteri ...

WILEY2019

Structural and functional analysis of host attachment proteins from contractile injection systems

Michel Plattner

Bacteriophages of the myoviridae family, R-type pyocin, Photorhabus virulence cassette (PVC), Serratia antifeeding prophage (Afp) and type 6 secretion system (T6SS) form a class of contractile injection systems that share common structural and functional c ...

EPFL2018

New methods for developing (bi)cyclic peptides by phage display

Camille Villequey

Cyclic peptide ligands are a promising molecular format for the development of therapeutics. They combine some of the advantages of large protein therapeutics (high affinity and specificity) and of small molecule drugs (accessibility to chemical synthesis ...

EPFL2017

Bypassing bacterial infection in phage display by sequencing DNA released from phage particles

Christian Heinis, Xudong Kong, Camille Villequey

Phage display relies on a bacterial infection step in which the phage particles are replicated to perform multiple affinity selection rounds and to enable the identification of isolated clones by DNA sequencing. While this process is efficient for wild-typ ...

2017

Phage Selection of Cyclic Peptides for Application in Research and Drug Development

Christian Heinis, Xudong Kong, Kaycie Marie Butler

Cyclic peptides can bind to protein targets with high affinities and selectivities, which makes them an attractive modality for the development of research reagents and therapeutics. Additional properties, including low inherent toxicity, efficient chemica ...

2017

Improving the binding affinity of in-vitro-evolved cyclic peptides by inserting atoms into the macrocycle backbone

Christian Heinis, Jonas Alfred Karl Wilbs, Simon Jan Middendorp

Cyclic peptides binding to targets of interest can be generated efficiently with powerful in vitro display techniques, such as phage display or mRNA display. The cyclic peptide libraries screened with these methods are generated by altering in a combinator ...

2016

Phage selection of chemically stabilized alpha-helical peptide ligands

Christian Heinis, Jörg Hülsken, Pierre Vincent Dessen, Philippe Diderich, Davide Bertoldo, Maola Khan Mohammad Golam

Short alpha-helical peptides stabilized by linkages between constituent amino acids offer an attractive format for ligand development. In recent years, a range of excellent ligands based on stabilized alpha-helices were generated by rational design using a ...

2016

Phage selection of peptide macrocycles against b-catenin to interfere with Wnt signaling

Christian Heinis, Jörg Hülsken, Pierre Vincent Dessen, Davide Bertoldo, Maola Khan Mohammad Golam

Upregulation of b-catenin, the primary mediator of the Wnt signaling pathway, plays an important role in the tumorigenesis of several types of human cancer. Targeting b-catenin to interfere with its ability to serve as a translational co-activator is consi ...

2016

Bioinspired Selective Surface Deposition of Fragrance Delivery Systems

Kemal Arda Günay

The perception of pleasantness in many of the consumer goods is provided by volatile chemical compounds called fragrances. While the volatility of fragrances is essential to provide a pleasant olfactory response, it presents at the same time a technologi ...

EPFL2016

Screening of structurally diverse bicyclic peptide libraries by phage display

Davide Bertoldo

Bicyclic peptides are an attractive molecule format for the development of therapeutics and research tools. Our laboratory is specialized on the development of bicyclic peptide ligands by phage display. In brief, libraries of randompeptides each containing ...

EPFL2016

Natural competence for transformation

Melanie Blokesch

While most molecular biologists are familiar with the artificial transformation of bacteria in the context of laboratory cloning experiments, natural competence for transformation refers to a specific physiological state in which prokaryotes are able to ta ...

2016

Branched Lateral Tail Fiber Organization in T5-Like Bacteriophages DT57C and DT571/2 is Revealed by Genetic and Functional Analysis

Ricardo Cesar Guerrero Ferreira, Nikolai Prokhorov

The T5-like siphoviruses DT57C and DT571/2, isolated from horse feces, are very closely related to each other, and most of their structural proteins are also nearly identical to T5 phage. Their LTFs (L-shaped tail fibers), however, are composed of two prot ...

Mdpi Ag2016

Structure and biochemical characterization of bacteriophage phi92 endosialidase

Petr Leiman, Christopher Browning

Surface-associated capsular polysaccharides (CPSs) protect bacteria against phage infection and enhance pathogenicity by interfering with the function of the host innate immune system. The CPS of enteropathogenic Escherichia coli K92 is a unique sialic aci ...

Academic Press Inc Elsevier Science2015

Structure of viral membrane-penetrating machines by electron cryo-microscopy and tomography

Sergey Nazarov

My PhD thesis aims to obtain the structure of several bacteriophages, including so-called “jumbo” phages, using the electron cryo-microscopy (cryo-EM) and to study the structural transformation of these viruses as they attach and infect the host cell. We a ...

EPFL2015