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Content archived on 2024-06-18

Global Dynamics of Proteolytic Quality Control Networks in Stress Response and Aging

Objective

Accumulation of damaged and aggregated proteins is associated with age-related neurodegeneration in Alzheimer’s and Parkinson’s patients. The ubiquitin/proteasome system (UPS) is a major proteolytic route functioning in a cellular network that maintains the proteome during stress and aging. Degradation of damaged proteins is mediated by the 26S proteasome upon attachment of ubiquitin (Ub) proteins (ubiquitylation). Another proteolytic system supporting protein homeostasis (proteostasis) is the autophagy-lysosome pathway that degrades proteins inside activated autophagosomes. An age-related impairment of either of these systems causes enhanced protein aggregation and affects lifespan, suggesting functional overlap and cooperation between UPS and autophagy in stress and aging. Despite the progress made in searching for key substrates that are destined for degradation, the major challenge in the field is to understand how these proteolytic systems are mechanistically coordinated to overcome age-related proteotoxicity. The ultimate goal of the proposed research is to assemble a global picture of stress-induced proteolytic networks critical for aging of multicellular organisms. The tissue-specific regulation of protein degradation pathways will be addressed using the powerful genetic model of Caenorhabditis elegans. The suggested project will systematically analyze: inducible protein degradation pathways (Aim 1), the regulation of UPS and autophagy by microRNAs (miRNAs) (Aim 2), and tissue-specific adaptation of proteolytic networks (Aim 3) in stress response and aging. To this end, comprehensive transcriptome analysis, large-scale genetic screenings combined with deep-sequencing technology, and candidate approaches based on in vivo imaging and degradation assays will be performed. Together, we propose a highly complementary research plan that aims to break new grounds in the understanding of proteolytic networks in aging and disease.

Fields of science (EuroSciVoc)

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Topic(s)

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Call for proposal

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ERC-2013-CoG
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Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

ERC-CG - ERC Consolidator Grants

Host institution

UNIVERSITAT ZU KOLN
EU contribution
€ 1 992 960,00
Address
ALBERTUS MAGNUS PLATZ
50931 KOLN
Germany

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Region
Nordrhein-Westfalen Köln Köln, Kreisfreie Stadt
Activity type
Higher or Secondary Education Establishments
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Total cost

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Beneficiaries (1)

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