EPIGENOME
Understanding epigenetic mechanisms of complex genome editing in eukaryotes
| Coordinatore |
Spiacenti, non ci sono informazioni su questo coordinatore. Contattare Fabio per maggiori infomrazioni, grazie. |
| Nazionalità Coordinatore | Non specificata |
| Totale costo | 1˙500˙000 € |
| EC contributo | 1˙500˙000 € |
| Programma | FP7-IDEAS-ERC
Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) |
| Code Call | ERC-2010-S |
| Anno di inizio | 2010 |
| Periodo (anno-mese-giorno) | 2010-11-01 - 2015-10-31 |
Partecipanti
| # | ||||
|---|---|---|---|---|
| 1 |
UNIVERSITAET BERN
Organization address
address: Hochschulstrasse 4 contact info |
CH (BERN) | hostInstitution | 1˙500˙000.00 |
| 2 |
UNIVERSITAET BERN
Organization address
address: Hochschulstrasse 4 contact info |
CH (BERN) | hostInstitution | 1˙500˙000.00 |
Mappa
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Obiettivo del progetto (Objective)
'The scientific goal of this proposal is to contribute to our understanding of RNA-mediated epigenetic mechanisms of genome regulation in eukaryotes. Choosing ciliated protozoa as model organisms gives a wonderful opportunity to study the incredibly complex epigenetic mechanism of programming large-scale developmental rearrangements of the genome. This involves extensive rearrangements of the germline DNA, including elimination of up to 95% of the genome. The massive DNA rearrangement makes ciliates the perfect model organism to study this aspect of germline-soma differentiation. This process is proposed to be regulated by an RNA-mediated homology-dependent comparison of the germline and somatic genomes. Ciliate’s genomic subtraction is one of the most fascinating examples of the use of RNA-mediated epigenetic regulation, and of a specialized RNA interference pathway, to convey non-Mendelian inheritance in eukaryotes. The ‘genome scanning’ model raises many interesting questions, which are also relevant to other RNA-mediated regulation systems. One of the most intriguing is a ‘thermodynamic’ problem: the model assumes that a very complex population of small RNAs representing the entire germline genome can be compared to longer transcripts representing the entire rearranged maternal genome, resulting in the efficient selection of germline-specific scnRNAs, which are able to target DNA deletions in the developing nucleus. How is it possible that the truly enormous number of pairing interactions implied can occur in such a short time, just a few hours? RNA-RNA pairing interactions would probably have to be assisted by a dedicated molecular machinery. This proposal focuses on characterizing proteins and RNAs that can orchestrate the massive genome rearrangements in ciliates.'