Oligomers are toxic in an array of protein misfolding and aggregation (PMA) disorders. However, the chain of events from protein aggregation to dysfunction is poorly understood. Prion diseases are marked by accumulation of PrPSc,...
ver más
¿Tienes un proyecto y buscas un partner? Gracias a nuestro motor inteligente podemos recomendarte los mejores socios y ponerte en contacto con ellos. Te lo explicamos en este video
RTI2018-098515-B-I00
ESTUDIO DE LOS MECANISMOS MOLECULARES IMPLICADOS EN EL MALPL...
182K€
Cerrado
PRISTINE-PD
Prion like transmission of synuclein in Parkinson s diseas...
2M€
Cerrado
PROCUREPM
Protein Misfolding Prion like Propagation and Cure. Implic...
1M€
Cerrado
PID2020-120497RB-I00
ESTUDIO DEL MECANISMO Y POTENCIAL TERAPEUTICO DEL PROCESAMIE...
224K€
Cerrado
PID2019-109276RA-I00
BASES ESTRUCTURALES DE LA TOXICIDAD DE ENSAMBLADOS TEMPRANOS...
157K€
Cerrado
Información proyecto PRIONS
Líder del proyecto
University of Zurich
No se ha especificado una descripción o un objeto social para esta compañía.
Presupuesto del proyecto
3M€
Fecha límite de participación
Sin fecha límite de participación.
Descripción del proyecto
Oligomers are toxic in an array of protein misfolding and aggregation (PMA) disorders. However, the chain of events from protein aggregation to dysfunction is poorly understood. Prion diseases are marked by accumulation of PrPSc, a misfolded variant of wild-type PrPC. PrPC mediates PrPSc neurotoxicity and counteracts toxic PrPC mutants, indicating that a subversion of normal PrPC function may underlie neurodegeneration, and this may not be limited to prion disease. Here, we propose to explore these newly discovered physiological functions of PrPC in three paradigms. We show that PrPC assembles into a multiprotein complex containing a protease; neurotoxic PrPC mutants generate a smaller complex that is uncleaved. We show that neuronal expression of PrPC is required in trans for long-term myelin maintenance in peripheral nerves. We will therefore investigate the hypothesis that a fragment of PrPC transmits signals crucial for axomyelinic integrity. We show that PrPC physically interacts with both amyloid b and islet amyloid polypeptide and attenuates functional impairment mediated by these peptides. We therefore propose to test whether subversion of normal PrPC function is involved in diverse PMA disorders. We developed an ex vivo model that accurately reproduces major features of prion infections, most notably neurodegeneration. We have identified several unexpected PrPSc-induced cellular stress pathways which may be common to other PMA disorders. Using this model system, we will clarify the role of PrPC in cell survival pathways and determine the requirement for PrPC in the pathology of other PMA disorders. This proposal capitalizes on provocative recent results and, if successful, will provide valuable insights into PMA toxicity that will go far beyond prion diseases.