VISQC

Visualizing cell maintenance: Chemical tools to investigate the microenvironments of misfolded proteins

Coordinatore	STICHTING KATHOLIEKE UNIVERSITEIT    more  Organization address address: GEERT GROOTEPLEIN NOORD 9 city: NIJMEGEN postcode: 6525 EZ contact info Titolo: Ms. Nome: Angela Cognome: Den Hollander Email: send email Telefono: 31243652709
Nazionalità Coordinatore	Netherlands [NL]
Totale costo	100˙000 €
EC contributo	100˙000 €
Programma	FP7-PEOPLE Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	FP7-PEOPLE-2013-CIG
Funding Scheme	MC-CIG
Anno di inizio	2014
Periodo (anno-mese-giorno)	2014-07-01   -   2018-06-30

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	STICHTING KATHOLIEKE UNIVERSITEIT  Organization address address: GEERT GROOTEPLEIN NOORD 9 city: NIJMEGEN postcode: 6525 EZ contact info Titolo: Ms. Nome: Angela Cognome: Den Hollander Email: send email Telefono: 31243652709	NL (NIJMEGEN)	coordinator	100˙000.00

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 Obiettivo del progetto (Objective)

'The capacity of the cell to maintain protein quality and function diminishes upon aging and disease. Genetic mutations may result in protein malfunction or structural defects due to an alternation of an essential amino acid. The cell has evolved many mechanisms to handle misfolded proteins; some proteins are refolded by molecular chaperones while others are targeted for degradation by the ubiquitin proteasome system and yet others are sequestered in deposits at a specific cellular location. How cells make decisions on a specific protein destination is only hardly understood and progress in this field is slow due to the lack of useful chemical and biological tools. In this proposal I will address this question by using a methodology that allows visualization of the cellular response towards an unfolded protein of which the physical properties are well known. The protein is genetically incorporated and correct folding is initially maintained by a small molecule ligand. The proteins are designed to vary in hydrophobicity and stability of the core structure. Unfolding of the protein is induced by depletion of the ligand after which the cellular response can be monitored. With the help of molecular tools it is possible to label interacting proteins that recognize the pool of unfolded proteins at specific stages of the quality control pathway. In addition, current mass spectrometry technologies allow identification of posttranslational modifications which are important for defining the final destination of the unfolded protein. The technology is further elaborated on protein aggregates that play a role in many neurodegenerative diseases. Information that arises from this study gives novel insights in the cellular dynamics and recognition of misfolded proteins. Understanding these processes will help in the development of novel diagnostics and therapeutics for diseases that are related to misfolded proteins or a defect in the cellular protein quality control machinery.'