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Biancotti JC, Espinosa-Jeffrey A. Metabolomic Profiling of the Secretome from Human Neural Stem Cells Flown into Space. Bioengineering (Basel) 2023; 11:11. [PMID: 38247888 PMCID: PMC10813126 DOI: 10.3390/bioengineering11010011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/16/2023] [Accepted: 12/19/2023] [Indexed: 01/23/2024] Open
Abstract
The change in gravitational force has a significant effect on biological tissues and the entire organism. As with any alteration in the environment, microgravity (µG) produces modifications in the system inducing adaptation to the new condition. In this study, we analyzed the effect of µG on neural stem cells (NSCs) following a space flight to the International Space Station (ISS). After 3 days in space, analysis of the metabolome in culture medium revealed increased glycolysis with augmented pyruvate and glycerate levels, and activated catabolism of branched-chain amino acids (BCAA) and glutamine. NSCs flown into space (SPC-NSCs) also showed increased synthesis of NADH and formation of polyamine spermidine when compared to ground controls (GC-NSCs). Overall, the space environment appears to increase energy demands in response to the µG setting.
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Affiliation(s)
- Juan Carlos Biancotti
- Department of Surgery/Pediatric Surgery, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA;
| | - Araceli Espinosa-Jeffrey
- Department of Psychiatry, IDDRC, Semel Institute, University of California Los Angeles, Los Angeles, CA 90095, USA
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Samoilenko T, Shishkina V, Antakova L, Goryushkina Y, Kostin A, Buchwalow I, Tiemann M, Atiakshin D. Smooth Muscle Actin as a Criterion for Gravisensitivity of Stomach and Jejunum in Laboratory Rodents. Int J Mol Sci 2023; 24:16539. [PMID: 38003728 PMCID: PMC10671600 DOI: 10.3390/ijms242216539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/09/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
Smooth muscle tissue (SMT) is one of the main structural components of visceral organs, acting as a key factor in the development of adaptive and pathological conditions. Despite the crucial part of SMT in the gastrointestinal tract activity, the mechanisms of its gravisensitivity are still insufficiently studied. The study evaluated the content of smooth muscle actin (α-SMA) in the membranes of the gastric fundus and jejunum in C57BL/6N mice (30-day space flight), in Mongolian gerbils Meriones unguiculatus (12-day orbital flight) and after anti-orthostatic suspension according to E.R. Morey-Holton. A morphometric analysis of α-SMA in the muscularis externa of the stomach and jejunum of mice and Mongolian gerbils from space flight groups revealed a decreased area of the immunopositive regions, a fact indicating a weakening of the SMT functional activity. Gravisensitivity of the contractile structures of the digestive system may be due to changes in the myofilament structural components of the smooth myocytes or myofibroblast actin. A simulated antiorthostatic suspension revealed no significant changes in the content of the α-SMA expression level, a fact supporting an alteration in the functional properties of the muscularis externa of the digestive hollow organs under weightless environment. The data obtained contribute to the novel mechanisms of the SMT contractile apparatus remodeling during orbital flights and can be used to improve preventive measures in space biomedicine.
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Affiliation(s)
- Tatyana Samoilenko
- Research Institute of Experimental Biology and Medicine, Burdenko Voronezh State Medical University, Moskovsky Prospekt 189a, 394036 Voronezh, Russia
| | - Viktoriya Shishkina
- Research Institute of Experimental Biology and Medicine, Burdenko Voronezh State Medical University, Moskovsky Prospekt 189a, 394036 Voronezh, Russia
| | - Lyubov Antakova
- Research Institute of Experimental Biology and Medicine, Burdenko Voronezh State Medical University, Moskovsky Prospekt 189a, 394036 Voronezh, Russia
| | - Yelena Goryushkina
- Research Institute of Experimental Biology and Medicine, Burdenko Voronezh State Medical University, Moskovsky Prospekt 189a, 394036 Voronezh, Russia
| | - Andrey Kostin
- Research and Educational Resource Center for Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis Innovative Technologies, RUDN University, 6 Miklukho-Maklaya St, 117198 Moscow, Russia
| | - Igor Buchwalow
- Research and Educational Resource Center for Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis Innovative Technologies, RUDN University, 6 Miklukho-Maklaya St, 117198 Moscow, Russia
- Institute for Hematopathology, 22547 Hamburg, Germany
| | | | - Dmitrii Atiakshin
- Research Institute of Experimental Biology and Medicine, Burdenko Voronezh State Medical University, Moskovsky Prospekt 189a, 394036 Voronezh, Russia
- Research and Educational Resource Center for Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis Innovative Technologies, RUDN University, 6 Miklukho-Maklaya St, 117198 Moscow, Russia
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