
handle: 10902/36913
Uno de los principales “hallmarks” del envejecimiento es el acortamiento de telómeros, que se puede correlacionar con la esperanza de vida de los organismos y puede estar influenciada por factores internos y externos, que afectan en última instancia al proceso de envejecimiento. En el presente estudio se demuestra que la longitud de los telómeros puede ser medida en epitelioides generados a partir de esófago, cultivos en 3D a largo plazo. Los epitelioides recapitulan in vitro la arquitectura y las propiedades mecánicas de los tejidos epiteliales. Los epitelioides han sido expuestos a factores externos, que modulan la longitud de los telómeros y han sido medidos sus correspondientes variaciones. Nuestros resultados muestran que una exposición a baja dosis de radiación ionizante induce acortamiento en los telómeros, mientras que el tratamiento con metformina mantiene la longitud original de los mismos a lo largo del tiempo. Estos descubrimientos destacan la robustez y relevancia de los epitelioides como un modelo para estudiar las dinámicas de los telómeros, así como los procesos relacionados con el envejecimiento.
One of the hallmarks of ageing is telomere shortening, which has been closely correlated with organismal lifespan and can be influenced by various external and internal factors, ultimately affecting the ageing process. In this study, we demonstrate that telomere length can be reliably measured in long-term 3D epithelioid oesophageal cultures. Epithelioids recapitulate the architecture and mechanical properties of epithelial tissues in vivo, offering a more physiologically relevant in vitro model. We exposed epithelioids to different external factors known to modulate telomere length and measured corresponding changes. Our results show that exposure to low doses of ionizing radiation leads to telomere shortening whereas treatment with metformin seems to preserve telomere length over time. These findings highlight the robustness and relevance of the epithelioids as a platform for studying telomere dynamics and ageingrelated processes.
Grado en Ciencias Biomédicas
Ageing, Oesophagus, Radiation, 3D cultures, Long term, Epithelioids, Senescence, Metformin, Telomere shortening
Ageing, Oesophagus, Radiation, 3D cultures, Long term, Epithelioids, Senescence, Metformin, Telomere shortening
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