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SCD – Stem Cell Differentiation on board the International Space Station [miRNA-seq on miRNAs from exosomes]

ABSTRACT: 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.

ORGANISM(S): Homo sapiens

PROVIDER: GSE100932 | GEO | 2019/01/31

REPOSITORIES: GEO

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SCD – Stem Cell Differentiation on board the International Space Station [RNA-seq]

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.

2019-01-31 | GSE100931 | GEO

SCD – Stem Cell Differentiation on board the International Space Station [microarray on total RNA]

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SCD – Stem Cell Differentiation on board the International Space Station: the problem of human bone loss

Project description:This SuperSeries is composed of the SubSeries listed below.

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SCD – Stem Cell Differentiation on board the International Space Station: the problem of human bone loss

Project description:SCD – Stem Cell Differentiation on board the International Space Station: the problem of human bone loss

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Effect of a 91 day long stay in weightlessness on the International Space Station on mouse skin physiology

Project description:Comparitive gene expression in skin between mice maintained in microgravity (0g) and normogravity (1g) environment. Six male C57Bl/J10 mice were housed for 91 days in the specially designed \Mouse Drawer System\ in weightlessness aboard the International Space Station. Three wild-type mice (WT) and three transgenic mice overexpressing the osteogneic factor PTN/OSF1 under the control of the human bone specific ostecalcin promoter (Tg) were used in the experiment. During the 3-month stay on the ISS, 3 mice unfortunately died leaving 2 Tg and 1 WT. \MDS tissue sharing program\ allowed several teams to study various tissues from these mice. Our aim was to investigate the effect of such a long period of microgravity on skin physiology by morphological, biochemical and genomewide analyses by comparison to similar mice on ground. Gene expression in the skin of 3 space mice and of 3 ground mice was analyzed by microarray. As this unique experiment performed on 3 mice limits the power of statistical analyis, as the transgene PTN/OSF1 was not overexpressed in skin and as a pair wise Pearson's correlation rates between the individual levels of expressed transcripts in the WT and the Tg mice were not significantly different from each other in one experimental group (space or ground), data from the 3 mice were combined to compare results from the space an ground groups.

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Project description:Efficient generation of functional cardiomyocytes from human induced pluripotent stem cells (hiPSC-CMs) is critical for their use in regenerative medicine and other applications. In this study, we evaluated the effect of space microgravity (µg) on the differentiation of hiPSC-derived cardiac progenitors compared with parallel 1g condition on the International Space Station. Cryopreserved 3D cardiac progenitors derived from hiPSCs were cultured for 3 weeks. Compared with 1g culture, the µg culture had larger sphere sizes, increased expression of proliferation markers, higher counts of nuclei, and higher cell viability. Highly enriched cardiomyocytes generated in µg had appropriate gene expression and cardiac structure as well as improved function including contractility and Ca2+ handling. RNA-seq analysis of 3-day cultures revealed that short-term exposure of cardiac progenitor spheres to space microgravity upregulated genes involved in cell proliferation, cardiac differentiation, and contraction. These results indicate that space microgravity increased survival and proliferation of hiPSC-CMs and improved their structures and functions.

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Swabs from the International Space Station

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Effects of a Closed Space Environment on Gene Expression in Hair Follicles of Astronauts in the International Space Station

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.

2016-03-31 | E-GEOD-74708 | biostudies-arrayexpress

Effects of a Closed Space Environment on Gene Expression in Hair Follicles of Astronauts in the International Space Station

2016-03-31 | GSE74708 | GEO