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StemProteostasis SIGNED

Mediation of stem cell identity and aging by proteostasis

Total Cost €


EC-Contrib. €






Project "StemProteostasis" data sheet

The following table provides information about the project.


Organization address
city: KOELN
postcode: 50931

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Project website
 Total cost 1˙500˙000 €
 EC max contribution 1˙500˙000 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2015-STG
 Funding Scheme ERC-STG
 Starting year 2016
 Duration (year-month-day) from 2016-07-01   to  2021-06-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITAET ZU KOELN DE (KOELN) coordinator 1˙500˙000.00


 Project objective

By 2050, the global population over the age of 80 will triple. Thus, research for improving the quality of life at older age can be of enormous benefit for our ever-aging society. To address this challenge we propose an innovative approach based on a combination of stem cell research with genetic experiments in C. elegans. Mechanisms that promote protein homeostasis (proteostasis) slow down aging and decrease the incidence of age-related diseases. Since human embryonic stem cells (hESCs) replicate continuously in the absence of senescence, we hypothesize that they can provide a novel paradigm to study proteostasis and its demise in aging. We have found that hESCs exhibit increased proteasome activity. Moreover, we have uncovered that the proteasome subunit RPN-6 is required for this activity and sufficient to extend healtshpan in C. elegans. However, the mechanisms by which the proteasome regulates hESC function remain unknown. Our first aim is to define how the proteasome regulates not only hESC identity but also aging and the onset of age-related diseases. Moreover, one of the next challenges is to define how other proteostasis pathways impinge upon hESC function. We hypothesize that, in addition to the proteasome, hESCs differentially regulate other subcellular stress response pathways designed to protect them from disequilibrium in the folding and degradation of their proteome. We will perform a comprehensive study of proteostasis of hESCs and mimic this network in somatic cells to alleviate age-related diseases. Finally, we will determine whether loss of proteostasis promotes somatic stem cell (SC) exhaustion, which is one of the most obvious characteristics of the aging process and contributes to tissue degeneration. By using mouse models we will examine whether sustained proteostasis delays neural SC exhaustion. Our research will have an impact in several fields such as stem cell research, neurogenesis, proteostasis, aging and age-related diseases.


year authors and title journal last update
List of publications.
2017 Hyun Ju Lee, Deniz Bartsch, Cally Xiao, Santiago Guerrero, Gaurav Ahuja, Christina Schindler, James J. Moresco, John R. Yates, Fátima Gebauer, Hisham Bazzi, Christoph Dieterich, Leo Kurian, David Vilchez
A post-transcriptional program coordinated by CSDE1 prevents intrinsic neural differentiation of human embryonic stem cells
published pages: , ISSN: 2041-1723, DOI: 10.1038/s41467-017-01744-5
Nature Communications 8/1 2019-07-25
2016 Alireza Noormohammadi, Amirabbas Khodakarami, Ricardo Gutierrez-Garcia, Hyun Ju Lee, Seda Koyuncu, Tim König, Christina Schindler, Isabel Saez, Azra Fatima, Christoph Dieterich, David Vilchez
Somatic increase of CCT8 mimics proteostasis of human pluripotent stem cells and extends C. elegans lifespan
published pages: 13649, ISSN: 2041-1723, DOI: 10.1038/ncomms13649
Nature Communications 7 2019-07-25
2018 Isabel Saez, Seda Koyuncu, Ricardo Gutierrez-Garcia, Christoph Dieterich, David Vilchez
Insights into the ubiquitin-proteasome system of human embryonic stem cells
published pages: , ISSN: 2045-2322, DOI: 10.1038/s41598-018-22384-9
Scientific Reports 8/1 2019-07-25
2018 Seda Koyuncu, Isabel Saez, Hyun Ju Lee, Ricardo Gutierrez-Garcia, Wojciech Pokrzywa, Azra Fatima, Thorsten Hoppe, David Vilchez
The ubiquitin ligase UBR5 suppresses proteostasis collapse in pluripotent stem cells from Huntington’s disease patients
published pages: , ISSN: 2041-1723, DOI: 10.1038/s41467-018-05320-3
Nature Communications 9/1 2019-07-25

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