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

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: GSE100930 | 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.

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

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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.

2019-01-31 | GSE100933 | GEO

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.

2014-08-31 | E-MTAB-2871 | biostudies-arrayexpress

Microgravity on the International Space Station promotes survival and proliferation of human stem cell cardiomyocytes

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

Project description:Swabs from the International Space Station Raw sequence reads

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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

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Growth of 48 built environment bacterial isolates on board the International Space Station (ISS).

Project description:Background. While significant attention has been paid to the potential risk of pathogenic microbes aboard crewed spacecraft, the non-pathogenic microbes in these habitats have received less consideration. Preliminary work has demonstrated that the interior of the International Space Station (ISS) has a microbial community resembling those of built environments on Earth. Here we report the results of sending 48 bacterial strains, collected from built environments on Earth, for a growth experiment on the ISS. This project was a component of Project MERCCURI (Microbial Ecology Research Combining Citizen and University Researchers on ISS). Results. Of the 48 strains sent to the ISS, 45 of them showed similar growth in space and on Earth using a relative growth measurement adapted for microgravity. The vast majority of species tested in this experiment have also been found in culture-independent surveys of the ISS. Only one bacterial strain showed significantly different growth in space. Bacillus safensis JPL-MERTA-8-2 grew 60% better in space than on Earth. Conclusions. The majority of bacteria tested were not affected by conditions aboard the ISS in this experiment (e.g., microgravity, cosmic radiation). Further work on Bacillus safensis could lead to interesting insights on why this strain grew so much better in space.

| S-EPMC4806633 | biostudies-literature

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