Project description:In recent times, long-term stay has become a common occurrence in the International Space Station (ISS). However, adaptation to the space environment can sometimes pose physiological problems to the astronauts after their return. Therefore, it is important to develop healthcare technologies for astronauts. In this study, hair, an easy-to-obtain sample, was identified as the candidate. In order to investigate the genetic changes in human hair during space flight, the hair follicles of 10 astronauts were analyzed by DNA microarray and real time q-PCR analyses. Space environment induced gene expression of hair follicles of astronaut was measured 6 differnent times included 2 in flight on orbit. Ten independent experiments were performed on differing astronauts. and the sampling day was differed for each astronaut because of their schedules.
Project description:In recent times, long-term stay has become a common occurrence in the International Space Station (ISS). However, adaptation to the space environment can sometimes pose physiological problems to the astronauts after their return. Therefore, it is important to develop healthcare technologies for astronauts. In this study, hair, an easy-to-obtain sample, was identified as the candidate. In order to investigate the genetic changes in human hair during space flight, the hair follicles of 10 astronauts were analyzed by DNA microarray and real time q-PCR analyses.
Project description:Cut&Tag for H3K27ac was performed in isolated CD4+ and CD8+ immune cells of astronauts undergoing prolonged orbital space flight and in control subjects.
Project description:The bone loss observed in astronauts and animal models after spaceflight is attributable to alterations in the bone tissue formation that depends from the continuous remodeling through the activities of bone-resorbing osteoclasts of hematopoietic lineage and bone-forming osteoblasts of mesenchymal origin. This disease is frequent in aged people, but develops much more rapidly in space. Our experiment, selected by ESA (European Space Agency), aimed to determine how human bone marrow mesenchymal stem cells (hBMSCs) react and differentiate in real microgravity, on board the International Space Station, in approx. 2 weeks time.
Project description:The bone loss observed in astronauts and animal models after spaceflight is attributable to alterations in the bone tissue formation that depends from the continuous remodeling through the activities of bone-resorbing osteoclasts of hematopoietic lineage and bone-forming osteoblasts of mesenchymal origin. This disease is frequent in aged people, but develops much more rapidly in space. Our experiment, selected by ESA (European Space Agency), aimed to determine how human bone marrow mesenchymal stem cells (hBMSCs) react and differentiate in real microgravity, on board the International Space Station, in approx. 2 weeks time.
Project description:The bone loss observed in astronauts and animal models after spaceflight is attributable to alterations in the bone tissue formation that depends from the continuous remodeling through the activities of bone-resorbing osteoclasts of hematopoietic lineage and bone-forming osteoblasts of mesenchymal origin. This disease is frequent in aged people, but develops much more rapidly in space. Our experiment, selected by ESA (European Space Agency), aimed to determine how human bone marrow mesenchymal stem cells (hBMSCs) react and differentiate in real microgravity, on board the International Space Station, in approx. 2 weeks time.
Project description:Aging is a major risk factor for neurodegeneration and is characterized by diverse cellular and molecular hallmarks. To understand their origin, we studied the effects of aging on the transcriptome, translatome, and proteome in the brain of short-lived killifish. We identified a cascade of events in which aberrant translation pausing led to altered abundance of proteins independently of transcriptional regulation. In particular, aging caused increased ribosome stalling and widespread depletion of proteins enriched in basic amino acids. These findings uncover a potential vulnerable point in the aging brain's biology – the biogenesis of basic DNA- and RNA-binding proteins. This vulnerability may represent a unifying principle that connects various aging hallmarks, encompassing genome integrity, proteostasis and the biosynthesis of macromolecules.