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SOMATIC LINE-1

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LINE 1 ACTIVITY IN SOMATIC STEM CELLS IMPACT AND GENOMIC MOSAICISM

45% of the human genome is made of repeated DNA, and some types can be mobilized within the genome (mobile DNA). LINE-1 or L1 is the only autonomous active mobile DNA within the human genome, with 500.000 copies per haploid genome... ver más

23/06/2012

FUNDACION PUBLICA...

100K€

Presupuesto del proyecto: 100K€

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FUNDACION PUBLICA ANDALUZA PROGRESO Y SALUD No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5 | 14M€

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Financiación concedida El organismo FP7 notifico la concesión del proyecto el día 2012-06-23 No tenemos la información de la convocatoria

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Líder del proyecto

FUNDACION PUBLICA ANDALUZA PROGRESO Y SALUD No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5 | 14M€

Presupuesto del proyecto 100K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto 45% of the human genome is made of repeated DNA, and some types can be mobilized within the genome (mobile DNA). LINE-1 or L1 is the only autonomous active mobile DNA within the human genome, with 500.000 copies per haploid genome (~17% of the genome). Overall, L1 is responsible for ~30% of our genome. Due to its activity and number in the genome, the impact that L1 has and have on the genome is notable. L1 mobility can result in several human diseases (due to insertions within genes) and can also participate in gene creation. L1 mobility is an active process in the human population, and we have recently demonstrated that human embryonic stem cells (hESCs) express L1 and can accumulate new copies of L1. As a result, some of these new copies will be transmitted to newborn individuals. Recently, it has been demonstrated that L1 is active in several somatic adult cell types. These are by definition cell types that will not disperse new L1 copies in the population. As a consequence, these results are a paradigm for the notion of L1 as a piece of selfish DNA, which is in the genome solely by its ability to replicate within the genome. In the present application, we will determine the level of expression and activity of L1 elements in several somatic stem cell types (neuronal, mesenchymals, and hematopoietic) in order to inspect the impact and mosaicism generated by L1 in somatic human tissues. The determination of the somatic impact of LINE-1 will shed light in several biological processes: from its role in the Central Nervous System, to its implication in several human diseases (is LINE-1 involved in the progression of human diseases as cancer?). Furthermore, its study will allow the design of therapeutic approaches in order to control its activity in somatic tissues. It is worth mentioning that the somatic activity of LINE-1 could be involved in several human diseases.

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