Concept

Biologie chimique

Publications associées (62)

Chemical strategies for controlling protein folding and elucidating the molecular mechanisms of amyloid formation and toxicity

Hilal Lashuel, Bruno Claude Daniel Fauvet, Loay Awad, Mirva Hejjaoui

It has been more than a century since the first evidence linking the process of amyloid formation to the pathogenesis of Alzheimer's disease. During the last three decades in particular, increasing evidence from various sources (pathology, genetics, cell c ...

Elsevier2012

Covalent cell surface functionalization of human fetal osteoblasts for tissue engineering

Sandrine Gerber, Corinne Scaletta, Davide Städler, Aurélien Godinat, Françoise Borcard

The chemical functionalization of cell-surface proteins of human primary fetal bone cells with hydrophilic bioorthogonal intermediates was investigated. Toward this goal, chemical pathways were developed for click reaction-mediated coupling of alkyne deriv ...

2011

Visualizing Biochemical Activities in Living Cells through Chemistry

Kai Johnsson, Luc Reymond, Rudolf Griss, Alberto Schena, Grazvydas Lukinavicius, Karolina Bojkowska, Birgit Mollwitz, Keitaro Umezawa, Matthias Albert Brun, Anastasiya Masharina

The development of molecular probes to visualize cellular processes is an important challenge in chemical biology. One possibility to create such cellular indicators is based on the selective labeling of proteins with synthetic probes in living cells. Over ...

2011

Semisynthetic Fluorescent Sensor Proteins Based on Self-Labeling Protein Tags

Matthias Albert Brun

Genetically encoded fluorescent sensor proteins offer the possibility to probe the concentration of key metabolites in living cells. The approaches currently used to generate such fluorescent sensor proteins lack generality, as they require a protein that ...

EPFL2011

Semisynthesis of fluorescent metabolite sensors on cell surfaces

Horst Vogel, Kai Johnsson, Luc Reymond, Rudolf Griss, Joachim Piguet, Matthias Albert Brun, Kui Thong Tan, Ruud Peters

Progress in understanding signal transduction and metabolic pathways is hampered by a shortage of suitable sensors for tracking metabolites, second messengers, and neurotransmitters in living cells. Here we introduce a class of rationally designed semisynt ...

2011

Real-Time Measurements of Protein Dynamics Using Fluorescence Activation-Coupled Protein Labeling Method

Kai Johnsson

We present a fluorescence activation-coupled protein labeling (FAPL) method, which employs small-molecular probes that exhibit almost no basal fluorescence but acquire strong fluorescence upon covalent binding to tag-proteins. This method enables real-time ...

2011

Miniaturization and Parallelization of Biological and Chemical Assays in Microfluidic Devices

Christoph Merten

Microfluidic systems are an attractive solution for the miniaturization of biological and chemical assays. The typical sample volume can be reduced up to 1 million-fold, and a superb level of spatiotemporal control is possible, facilitating highly parallel ...

2010

Small Molecule Based Approaches to Inhibit Macrophage Migration Inhibitory Factor (MIF) Activities and Elucidate its Role in Health and Disease

Hajer Ouertatani-Sakouhi

Macrophage migration inhibitory factor (MIF) is a major mediator in innate immunity and inflammation and a potential therapeutic target in multiple inflammatory, infectious and autoimmune diseases including cancer. Current therapeutic strategies for target ...

EPFL2010

How to obtain labeled proteins and what to do with them

Kai Johnsson, Marlon Hinner

We review new and established methods for the chemical modification of proteins in living cells and highlight recent applications. The review focuses on tag-mediated protein labeling methods, such as the tetracysteine tag and SNAP-tag, and new developments ...

Elsevier2010

Ethynyl-1,2-benziodoxol-3(1 H)-one (EBX): An Exceptional Reagent for the Ethynylation of Keto, Cyano, and Nitro Esters

Jérôme Waser, Jonathan Brand, Davinia Fernández González

Hot alkyne! The in situ generation of Ethynyl-1,2-BenziodoXol-3(1H)-one (EBX) from the corresponding silyl protected reagent using TBAF is reported. EBX displayed exceptional acetylene transfer ability to stabilized enolates, even at –78 °C. The mild react ...

2010

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