Chimie et physico-chimie d'assemblages peptidiques et protéiniques

Durée

25h Th

Nombre de crédits

Enseignant

Jean-Christophe Monbaliu, Loïc Quinton

Coordinateur(s)

Jean-Christophe Monbaliu

Langue(s) de l'unité d'enseignement

Langue française

Organisation et évaluation

Enseignement au premier quadrimestre, examen en janvier

Horaire

Horaire en ligne

Unités d'enseignement prérequises et corequises

Les unités prérequises ou corequises sont présentées au sein de chaque programme

Contenus de l'unité d'enseignement

Chemistry and physico-chemistry of peptide and protein architectures consists in a series of lectures dedicated to modern chemistry and physico-chemistry of peptides and proteins. Peptide and protein-based therapeutics have a promising growth forecast. There are currently more than 70 approved peptide-based drugs on the market worldwide. More than 140 therapeutic peptides are currently being evaluated in clinical trials, and more than 500 peptide derivatives are in preclinical development. Peptide-based drugs represent ca. 10% of the new drugs accepted in 2016 just in the US. The global peptide drug market is rocketing and is predicted to increase from US$ 14.1 billion to an estimated US$ 25.4 billion in 2018. In such a context, there is a pressing demand for developing new synthetic methods and technologies toward their production, characterization and the identification of their physico-chemical properties. The course starts with a thorough introduction on the modern concepts and methods for the preparation of peptides and proteins, using extraction from natural sources, recombinant techniques and total synthesis.
Another chapter of the course will be dedicated to the main approaches used for determining the sequences and the structures of natural peptides. Indeed, natural sources represent a library of millions of bioactive compounds. However, after having purified a compound of interest, usually by bio-guidage, only a few amount of peptide is still available for total characterization. For so small quantities of material, sensitive methods had to be developed. This part of the course will be focused on these techniques, with a special attention on peptide sequencing by mass spectrometry. The theory presented will be illustrated by the characterization of peptide toxins extracted from animal venoms, where post-translational modifications are massively added to the sequences, increasing the difficulty of achieving full sequences.

Acquis d'apprentissage (objectifs d'apprentissage) de l'unité d'enseignement

• Get familiar with the most modern techniques for peptide and protein synthesis and purification
• Understand the theory of peptide sequencing, and become capable of exploiting this knowledge to characterize highly modified peptides.

Savoirs et compétences prérequis

Fundamental concepts of organic chemistry, physical chemistry and structural chemistry (bachelor degree)

Activités d'apprentissage prévues et méthodes d'enseignement

Exercises
A large diversity of examples and exercises are used to illustrate the theoretical concepts. The student will be asked to select a topic of interest related to this series of lecture and to organize a seminar (45 min)
Lab practice
Synthesis of model peptide sequences using modern strategies will be illustrated in the lab. Training on a mass spectrometer will be considered. Each student will have a purified peptide and will be encouraged to design its own experiment to collect as much information as possible on this unknown peptide.

Mode d'enseignement (présentiel, à distance, hybride)

Delivery of material in a lecture format, face-to-face. Possibility of e-learning (online additional references and resources).

Lectures recommandées ou obligatoires et notes de cours

Slides, additional resources and appropriate references will be made available to the students (myuliège/eCampus). A large diversity of examples and exercises are used to illustrate the theoretical concepts.

Modalités d'évaluation et critères

The overall theoretical and practical competences will be assessed during a written exam (4 h, January examination session). The exam consists mostly in solving concrete syntheses and applying the various theoretical concepts. A second examination session will be rescheduled for grades below 10/20 with similar criteria as for the first examination session.

Stage(s)

Remarques organisationnelles et modifications principales apportées au cours

Contacts

Jean-Christophe M. Monbaliu
tel 04 366 35 10; email jc.monbaliu@uliege.be  
Loïc Quinton
tel 04 366 36 79; email Loic.Quinton@uliege.be    

Association d'un ou plusieurs MOOCs

Notes en ligne