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Rudolf AM, Hood WR. Mitochondrial stress in the spaceflight environment. Mitochondrion 2024; 76:101855. [PMID: 38403094 DOI: 10.1016/j.mito.2024.101855] [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: 07/08/2023] [Revised: 02/12/2024] [Accepted: 02/22/2024] [Indexed: 02/27/2024]
Abstract
Space is a challenging environment that deregulates individual homeostasis. The main external hazards associated with spaceflight include ionizing space radiation, microgravity, isolation and confinement, distance from Earth, and hostile environment. Characterizing the biological responses to spaceflight environment is essential to validate the health risks, and to develop effective protection strategies. Mitochondria energetics is a key mechanism underpinning many physiological, ecological and evolutionary processes. Moreover, mitochondrial stress can be considered one of the fundamental features of space travel. So, we attempt to synthesize key information regarding the extensive effects of spaceflight on mitochondria. In summary, mitochondria are affected by all of the five main hazards of spaceflight at multiple levels, including their morphology, respiratory function, protein, and genetics, in various tissues and organ systems. We emphasize that investigating mitochondrial biology in spaceflight conditions should become the central focus of research on the impacts of spaceflight on human health, as this approach will help resolve numerous challenges of space health and combat several health disorders associated with mitochondrial dysfunction.
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Affiliation(s)
- Agata M Rudolf
- Department of Biological Sciences, Auburn University, Auburn, AL, USA; Space Technology Centre, AGH University of Science and Technology, Krakow, Poland.
| | - Wendy R Hood
- Department of Biological Sciences, Auburn University, Auburn, AL, USA
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2
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Zhang Y, Zhao L, Sun Y. Using single-sample networks to identify the contrasting patterns of gene interactions and reveal the radiation dose-dependent effects in multiple tissues of spaceflight mice. NPJ Microgravity 2024; 10:45. [PMID: 38575629 PMCID: PMC10995210 DOI: 10.1038/s41526-024-00383-7] [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: 11/02/2023] [Accepted: 03/08/2024] [Indexed: 04/06/2024] Open
Abstract
Transcriptome profiles are sensitive to space stressors and serve as valuable indicators of the biological effects during spaceflight. Herein, we transformed the expression profiles into gene interaction patterns by single-sample networks (SSNs) and performed the integrated analysis on the 301 spaceflight and 290 ground control samples, which were obtained from the GeneLab platform. Specifically, an individual SSN was established for each sample. Based on the topological structures of 591 SSNs, the differentially interacted genes (DIGs) were identified between spaceflights and ground controls. The results showed that spaceflight disrupted the gene interaction patterns in mice and resulted in significant enrichment of biological processes such as protein/amino acid metabolism and nucleic acid (DNA/RNA) metabolism (P-value < 0.05). We observed that the mice exposed to radiation doses within the three intervals (4.66-7.14, 7.592-8.295, 8.49-22.099 mGy) exhibited similar gene interaction patterns. Low and medium doses resulted in changes to the circadian rhythm, while the damaging effects on genetic material became more pronounced in higher doses. The gene interaction patterns in response to space stressors varied among different tissues, with the spleen, lung, and skin being the most responsive to space radiation (P-value < 0.01). The changes observed in gene networks during spaceflight conditions might contribute to the development of various diseases, such as mental disorders, depression, and metabolic disorders, among others. Additionally, organisms activated specific gene networks in response to virus reactivation. We identified several hub genes that were associated with circadian rhythms, suggesting that spaceflight could lead to substantial circadian rhythm dysregulation.
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Affiliation(s)
- Yan Zhang
- Institute of Environmental Systems Biology, College of Environmental Science and Engineering, Dalian Maritime University, 116026, Dalian, Liaoning, China
| | - Lei Zhao
- Institute of Environmental Systems Biology, College of Environmental Science and Engineering, Dalian Maritime University, 116026, Dalian, Liaoning, China.
| | - Yeqing Sun
- Institute of Environmental Systems Biology, College of Environmental Science and Engineering, Dalian Maritime University, 116026, Dalian, Liaoning, China.
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3
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Chakraborty N, Holmes-Hampton GP, Gautam A, Kumar R, Hritzo B, Legesse B, Dimitrov G, Ghosh SP, Hammamieh R. Early to sustained impacts of lethal radiation on circulating miRNAs in a minipig model. Sci Rep 2023; 13:18496. [PMID: 37898651 PMCID: PMC10613244 DOI: 10.1038/s41598-023-45250-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 10/17/2023] [Indexed: 10/30/2023] Open
Abstract
Early diagnosis of lethal radiation is imperative since its intervention time windows are considerably short. Hence, ideal diagnostic candidates of radiation should be easily accessible, enable to inform about the stress history and objectively triage subjects in a time-efficient manner. Therefore, the small molecules such as metabolites and microRNAs (miRNAs) from plasma are legitimate biomarker candidate for lethal radiation. Our objectives were to comprehend the radiation-driven molecular pathogenesis and thereby determine biomarkers of translational potential. We investigated an established minipig model of LD70/45 total body irradiation (TBI). In this pilot study, plasma was collected pre-TBI and at multiple time points post-TBI. The majority of differentially expressed miRNAs and metabolites were perturbed immediately after TBI that potentially underlined the severity of its acute impact. The integrative network analysis of miRNA and metabolites showed a cohesive response; the early and consistent perturbations of networks were linked to cancer and the shift in musculoskeletal atrophy synchronized with the comorbidity-networks associated with inflammation and bioenergy synthesis. Subsequent comparative pipeline delivered 92 miRNAs, which demonstrated sequential homology between human and minipig, and potentially similar responses to lethal radiation across these two species. This panel promised to retrospectively inform the time since the radiation occurred; thereby could facilitate knowledge-driven interventions.
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Affiliation(s)
- Nabarun Chakraborty
- Medical Readiness Systems Biology, CMPN, Walter Reed Army Institute of Research, Silver Spring, MD, 20910, USA
| | - Gregory P Holmes-Hampton
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD, 20889, USA
| | - Aarti Gautam
- Medical Readiness Systems Biology, CMPN, Walter Reed Army Institute of Research, Silver Spring, MD, 20910, USA
| | - Raina Kumar
- The Geneva Foundation, US Army Center for Environmental Health Research, Fort Detrick, MD, 21702-5010, USA
| | - Bernadette Hritzo
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD, 20889, USA
| | - Betre Legesse
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD, 20889, USA
| | - George Dimitrov
- Medical Readiness Systems Biology, CMPN, Walter Reed Army Institute of Research, Silver Spring, MD, 20910, USA
- The Geneva Foundation, US Army Center for Environmental Health Research, Fort Detrick, MD, 21702-5010, USA
| | - Sanchita P Ghosh
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD, 20889, USA.
| | - Rasha Hammamieh
- Medical Readiness Systems Biology, CMPN, Walter Reed Army Institute of Research, Silver Spring, MD, 20910, USA
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4
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Pantoja-Feliciano De Goodfellow IG, Agans R, Barbato R, Colston S, Goodson MS, Hammamieh R, Hentchel K, Jones R, Karl JP, Kokoska R, Leary DH, Mauzy C, Racicot K, Stamps BW, Varaljay V, Soares JW. Meeting report of the sixth annual tri-service microbiome consortium symposium. ENVIRONMENTAL MICROBIOME 2023; 18:66. [PMID: 37533117 PMCID: PMC10399065 DOI: 10.1186/s40793-023-00523-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 07/19/2023] [Indexed: 08/04/2023]
Abstract
The Tri-Service Microbiome Consortium (TSMC) was founded to enhance collaboration, coordination, and communication of microbiome research among DoD organizations and to facilitate resource, material and information sharing amongst consortium members, which includes collaborators in academia and industry. The 6th Annual TSMC Symposium was a hybrid meeting held in Fairlee, Vermont on 27-28 September 2022 with presentations and discussions centered on microbiome-related topics within seven broad thematic areas: (1) Human Microbiomes: Stress Response; (2) Microbiome Analysis & Surveillance; (3) Human Microbiomes Enablers & Engineering; (4) Human Microbiomes: Countermeasures; (5) Human Microbiomes Discovery - Earth & Space; (6) Environmental Micro & Myco-biome; and (7) Environmental Microbiome Analysis & Engineering. Collectively, the symposium provided an update on the scope of current DoD microbiome research efforts, highlighted innovative research being done in academia and industry that can be leveraged by the DoD, and fostered collaborative opportunities. This report summarizes the activities and outcomes from the 6th annual TSMC symposium.
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Affiliation(s)
- Ida G Pantoja-Feliciano De Goodfellow
- Soldier Effectiveness Directorate, United States Army Combat Capabilities Development Command Soldier Center, 10 General Greene Ave, Natick, MA, 01760, USA
| | - Richard Agans
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA
| | - Robyn Barbato
- United States Army ERDC Cold Regions Research and Engineering Laboratory, Hanover, New Hampshire, USA
| | - Sophie Colston
- United States Naval Research Laboratory, Washington D.C., USA
| | - Michael S Goodson
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA
| | - Rasha Hammamieh
- Medical Readiness Systems Biology, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| | | | - Robert Jones
- United States Army ERDC Cold Regions Research and Engineering Laboratory, Hanover, New Hampshire, USA
| | - J Philip Karl
- Military Nutrition Division, United States Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Robert Kokoska
- Physical Sciences Directorate, United States Army Research Laboratory, United States Army Research Office, Research Triangle Park, Durham, NC, USA
| | - Dagmar H Leary
- United States Naval Research Laboratory, Washington D.C., USA
| | - Camilla Mauzy
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA
| | - Kenneth Racicot
- Soldier Effectiveness Directorate, United States Army Combat Capabilities Development Command Soldier Center, 10 General Greene Ave, Natick, MA, 01760, USA
| | - Blake W Stamps
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA
| | - Vanessa Varaljay
- 711th Human Performance Wing, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, USA
| | - Jason W Soares
- Soldier Effectiveness Directorate, United States Army Combat Capabilities Development Command Soldier Center, 10 General Greene Ave, Natick, MA, 01760, USA.
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Watson S, LaVigne CA, Xu L, Surdez D, Cyrta J, Calderon D, Cannon MV, Kent MR, Silvius KM, Kucinski JP, Harrison EN, Murchison W, Rakheja D, Tirode F, Delattre O, Amatruda JF, Kendall GC. VGLL2-NCOA2 leverages developmental programs for pediatric sarcomagenesis. Cell Rep 2023; 42:112013. [PMID: 36656711 PMCID: PMC10054615 DOI: 10.1016/j.celrep.2023.112013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 10/14/2022] [Accepted: 01/04/2023] [Indexed: 01/19/2023] Open
Abstract
Clinical sequencing efforts are rapidly identifying sarcoma gene fusions that lack functional validation. An example is the fusion of transcriptional coactivators, VGLL2-NCOA2, found in infantile rhabdomyosarcoma. To delineate VGLL2-NCOA2 tumorigenic mechanisms and identify therapeutic vulnerabilities, we implement a cross-species comparative oncology approach with zebrafish, mouse allograft, and patient samples. We find that VGLL2-NCOA2 is sufficient to generate mesenchymal tumors that display features of immature skeletal muscle and recapitulate the human disease. A subset of VGLL2-NCOA2 zebrafish tumors transcriptionally cluster with embryonic somitogenesis and identify VGLL2-NCOA2 developmental programs, including a RAS family GTPase, ARF6. In VGLL2-NCOA2 zebrafish, mouse, and patient tumors, ARF6 is highly expressed. ARF6 knockout suppresses VGLL2-NCOA2 oncogenic activity in cell culture, and, more broadly, ARF6 is overexpressed in adult and pediatric sarcomas. Our data indicate that VGLL2-NCOA2 is an oncogene that leverages developmental programs for tumorigenesis and that reactivation or persistence of ARF6 could represent a therapeutic opportunity.
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Affiliation(s)
- Sarah Watson
- Institut Curie Research Center, Paris Sciences et Lettres (PSL) Research University, INSERM U830, 75005 Paris, France; Institut Curie, Paris Sciences et Lettres (PSL) Research University, Medical Oncology Department, 75005 Paris, France
| | - Collette A LaVigne
- Department of Molecular Biology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Lin Xu
- Quantitative Biomedical Research Center, Department of Population and Data Sciences, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Didier Surdez
- Institut Curie Research Center, Paris Sciences et Lettres (PSL) Research University, INSERM U830, 75005 Paris, France; Balgrist University Hospital, Faculty of Medicine, University of Zürich (UZH), 8008 Zürich, Switzerland
| | - Joanna Cyrta
- Institut Curie, Paris Sciences et Lettres (PSL) Research University, Department of Pathology, 75005 Paris, France
| | - Delia Calderon
- Center for Childhood Cancer, The Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH 43205, USA; Molecular, Cellular, and Developmental Biology Ph.D. Program, The Ohio State University, Columbus, OH 43210, USA
| | - Matthew V Cannon
- Center for Childhood Cancer, The Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - Matthew R Kent
- Center for Childhood Cancer, The Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - Katherine M Silvius
- Center for Childhood Cancer, The Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - Jack P Kucinski
- Center for Childhood Cancer, The Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH 43205, USA; Molecular, Cellular, and Developmental Biology Ph.D. Program, The Ohio State University, Columbus, OH 43210, USA
| | - Emma N Harrison
- Center for Childhood Cancer, The Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - Whitney Murchison
- Department of Pediatrics, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Dinesh Rakheja
- Department of Pediatrics, UT Southwestern Medical Center, Dallas, TX 75390, USA; Department of Pathology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Franck Tirode
- University Lyon, Université Claude Bernard Lyon 1, Cancer Research Center of Lyon, INSERM 1052, CNRS 5286, Centre LéonBérard, 69008 Lyon, France
| | - Olivier Delattre
- Institut Curie Research Center, Paris Sciences et Lettres (PSL) Research University, INSERM U830, 75005 Paris, France; Institut Curie, SIREDO Pediatric Center, 75005 Paris, France; Institut Curie Hospital Group, Unité de Génétique Somatique, 75005 Paris, France
| | - James F Amatruda
- Cancer and Blood Disease Institute, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA; Departments of Pediatrics and Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA.
| | - Genevieve C Kendall
- Center for Childhood Cancer, The Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH 43205, USA; Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH 43205, USA.
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6
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Alternative splicing diversifies the skeletal muscle transcriptome during prolonged spaceflight. Skelet Muscle 2022; 12:11. [PMID: 35642060 PMCID: PMC9153194 DOI: 10.1186/s13395-022-00294-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 04/05/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND As the interest in manned spaceflight increases, so does the requirement to understand the transcriptomic mechanisms that underlay the detrimental physiological adaptations of skeletal muscle to microgravity. While microgravity-induced differential gene expression (DGE) has been extensively investigated, the contribution of differential alternative splicing (DAS) to the plasticity and functional status of the skeletal muscle transcriptome has not been studied in an animal model. Therefore, by evaluating both DGE and DAS across spaceflight, we set out to provide the first comprehensive characterization of the transcriptomic landscape of skeletal muscle during exposure to microgravity. METHODS RNA-sequencing, immunohistochemistry, and morphological analyses were conducted utilizing total RNA and tissue sections isolated from the gastrocnemius and quadriceps muscles of 30-week-old female BALB/c mice exposed to microgravity or ground control conditions for 9 weeks. RESULTS In response to microgravity, the skeletal muscle transcriptome was remodeled via both DGE and DAS. Importantly, while DGE showed variable gene network enrichment, DAS was enriched in structural and functional gene networks of skeletal muscle, resulting in the expression of alternatively spliced transcript isoforms that have been associated with the physiological changes to skeletal muscle in microgravity, including muscle atrophy and altered fiber type function. Finally, RNA-binding proteins, which are required for regulation of pre-mRNA splicing, were themselves differentially spliced but not differentially expressed, an upstream event that is speculated to account for the downstream splicing changes identified in target skeletal muscle genes. CONCLUSIONS Our work serves as the first investigation of coordinate changes in DGE and DAS in large limb muscles across spaceflight. It opens up a new opportunity to understand (i) the molecular mechanisms by which splice variants of skeletal muscle genes regulate the physiological adaptations of skeletal muscle to microgravity and (ii) how small molecule splicing regulator therapies might thwart muscle atrophy and alterations to fiber type function during prolonged spaceflight.
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Metabolomics as an Important Tool for Determining the Mechanisms of Human Skeletal Muscle Deconditioning. Int J Mol Sci 2021; 22:ijms222413575. [PMID: 34948370 PMCID: PMC8706620 DOI: 10.3390/ijms222413575] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/15/2021] [Accepted: 12/16/2021] [Indexed: 12/28/2022] Open
Abstract
Muscle deconditioning impairs both locomotor function and metabolic health, and is associated with reduced quality life and increased mortality rates. Despite an appreciation of the existence of phenomena such as muscle anabolic resistance, mitophagy, and insulin resistance with age and disease in humans, little is known about the mechanisms responsible for these negative traits. With the complexities surrounding these unknowns and the lack of progress to date in development of effective interventions, there is a need for alternative approaches. Metabolomics is the study of the full array of metabolites within cells or tissues, which collectively constitute the metabolome. As metabolomics allows for the assessment of the cellular metabolic state in response to physiological stimuli, any chronic change in the metabolome is likely to reflect adaptation in the physiological phenotype of an organism. This, therefore, provides a holistic and unbiased approach that could be applied to potentially uncover important novel facets in the pathophysiology of muscle decline in ageing and disease, as well as identifying prognostic markers of those at risk of decline. This review will aim to highlight the current knowledge and potential impact of metabolomics in the study of muscle mass loss and deconditioning in humans and will highlight key areas for future research.
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Sharma A, Clemens RA, Garcia O, Taylor DL, Wagner NL, Shepard KA, Gupta A, Malany S, Grodzinsky AJ, Kearns-Jonker M, Mair DB, Kim DH, Roberts MS, Loring JF, Hu J, Warren LE, Eenmaa S, Bozada J, Paljug E, Roth M, Taylor DP, Rodrigue G, Cantini P, Smith AW, Giulianotti MA, Wagner WR. Biomanufacturing in low Earth orbit for regenerative medicine. Stem Cell Reports 2021; 17:1-13. [PMID: 34971562 PMCID: PMC8758939 DOI: 10.1016/j.stemcr.2021.12.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 12/01/2021] [Accepted: 12/02/2021] [Indexed: 02/06/2023] Open
Abstract
Research in low Earth orbit (LEO) has become more accessible. The 2020 Biomanufacturing in Space Symposium reviewed space-based regenerative medicine research and discussed leveraging LEO to advance biomanufacturing for regenerative medicine applications. The symposium identified areas where financial investments could stimulate advancements overcoming technical barriers. Opportunities in disease modeling, stem-cell-derived products, and biofabrication were highlighted. The symposium will initiate a roadmap to a sustainable market for regenerative medicine biomanufacturing in space. This perspective summarizes the 2020 Biomanufacturing in Space Symposium, highlights key biomanufacturing opportunities in LEO, and lays the framework for a roadmap to regenerative medicine biomanufacturing in space.
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Affiliation(s)
- Arun Sharma
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA; Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA; Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
| | | | - Orquidea Garcia
- Johnson & Johnson 3D Printing Innovation & Customer Solutions, Johnson & Johnson Services, Inc., Irvine, CA, USA
| | - D Lansing Taylor
- University of Pittsburgh Drug Discovery Institute and Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, PA, USA
| | | | - Kelly A Shepard
- California Institute for Regenerative Medicine, Oakland, CA, USA
| | | | - Siobhan Malany
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Alan J Grodzinsky
- Departments of Biological Engineering, Mechanical Engineering and Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Mary Kearns-Jonker
- Department of Pathology and Human Anatomy, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Devin B Mair
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Deok-Ho Kim
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Michael S Roberts
- Center for the Advancement of Science in Space, Inc, Melbourne, FL, USA
| | | | - Jianying Hu
- Center for Computational Health IBM Research, Yorktown Heights, New York, NY, USA
| | - Lara E Warren
- Center for the Advancement of Science in Space, Inc, Melbourne, FL, USA
| | - Sven Eenmaa
- Center for the Advancement of Science in Space, Inc, Melbourne, FL, USA
| | - Joe Bozada
- Joseph M. Katz Graduate School of Business, University of Pittsburgh, Pittsburgh, PA, USA
| | - Eric Paljug
- Joseph M. Katz Graduate School of Business, University of Pittsburgh, Pittsburgh, PA, USA
| | | | | | - Gary Rodrigue
- Center for the Advancement of Science in Space, Inc, Melbourne, FL, USA
| | - Patrick Cantini
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA, USA
| | - Amelia W Smith
- Center for the Advancement of Science in Space, Inc, Melbourne, FL, USA
| | - Marc A Giulianotti
- Center for the Advancement of Science in Space, Inc, Melbourne, FL, USA.
| | - William R Wagner
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA, USA; Departments of Surgery, Bioengineering, Chemical Engineering, University of Pittsburgh, Pittsburgh, PA, USA.
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Knox AM, McGuire AC, Natoli RM, Kacena MA, Collier CD. Methodology, selection, and integration of fracture healing assessments in mice. J Orthop Res 2021; 39:2295-2309. [PMID: 34436797 PMCID: PMC8542592 DOI: 10.1002/jor.25172] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 08/02/2021] [Accepted: 08/13/2021] [Indexed: 02/04/2023]
Abstract
Long bone fractures are one of the most common and costly medical conditions encountered after trauma. Characterization of the biology of fracture healing and development of potential medical interventions generally involves animal models of fracture healing using varying genetic or treatment groups, then analyzing relative repair success via the synthesis of diverse assessment methodologies. Murine models are some of the most widely used given their low cost, wide variety of genetic variants, and rapid breeding and maturation. This review addresses key concerns regarding fracture repair investigations in mice and may serve as a guide in conducting and interpreting such studies. Specifically, this review details the procedures, highlights relevant parameters, and discusses special considerations for the selection and integration of the major modalities used for quantifying fracture repair in such studies, including X-ray, microcomputed tomography, histomorphometric, biomechanical, gene expression and biomarker analyses.
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Affiliation(s)
- Adam M. Knox
- Department of Orthopaedic Surgery, Indiana University School of Medicine, IN, USA
| | - Anthony C. McGuire
- Department of Orthopaedic Surgery, Indiana University School of Medicine, IN, USA
| | - Roman M. Natoli
- Department of Orthopaedic Surgery, Indiana University School of Medicine, IN, USA
| | - Melissa A. Kacena
- Department of Orthopaedic Surgery, Indiana University School of Medicine, IN, USA
- Richard L. Roudebush VA Medical Center, IN, USA
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10
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Kumar A, Tahimic CGT, Almeida EAC, Globus RK. Spaceflight Modulates the Expression of Key Oxidative Stress and Cell Cycle Related Genes in Heart. Int J Mol Sci 2021; 22:9088. [PMID: 34445793 PMCID: PMC8396460 DOI: 10.3390/ijms22169088] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/18/2021] [Accepted: 08/19/2021] [Indexed: 11/16/2022] Open
Abstract
Spaceflight causes cardiovascular changes due to microgravity-induced redistribution of body fluids and musculoskeletal unloading. Cardiac deconditioning and atrophy on Earth are associated with altered Trp53 and oxidative stress-related pathways, but the effects of spaceflight on cardiac changes at the molecular level are less understood. We tested the hypothesis that spaceflight alters the expression of key genes related to stress response pathways, which may contribute to cardiovascular deconditioning during extended spaceflight. Mice were exposed to spaceflight for 15 days or maintained on Earth (ground control). Ventricle tissue was harvested starting ~3 h post-landing. We measured expression of select genes implicated in oxidative stress pathways and Trp53 signaling by quantitative PCR. Cardiac expression levels of 37 of 168 genes tested were altered after spaceflight. Spaceflight downregulated transcription factor, Nfe2l2 (Nrf2), upregulated Nox1 and downregulated Ptgs2, suggesting a persistent increase in oxidative stress-related target genes. Spaceflight also substantially upregulated Cdkn1a (p21) and cell cycle/apoptosis-related gene Myc, and downregulated the inflammatory response gene Tnf. There were no changes in apoptosis-related genes such as Trp53. Spaceflight altered the expression of genes regulating redox balance, cell cycle and senescence in cardiac tissue of mice. Thus, spaceflight may contribute to cardiac dysfunction due to oxidative stress.
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Affiliation(s)
- Akhilesh Kumar
- Space Biosciences Division, NASA Ames Research Center, Mail Stop 288-2, Moffett Field, CA 94035, USA; (A.K.); (E.A.C.A.)
| | | | - Eduardo A. C. Almeida
- Space Biosciences Division, NASA Ames Research Center, Mail Stop 288-2, Moffett Field, CA 94035, USA; (A.K.); (E.A.C.A.)
| | - Ruth K. Globus
- Space Biosciences Division, NASA Ames Research Center, Mail Stop 288-2, Moffett Field, CA 94035, USA; (A.K.); (E.A.C.A.)
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11
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Chakraborty N, Zamarioli A, Gautam A, Campbell R, Mendenhall SK, Childress PJ, Dimitrov G, Sowe B, Tucker A, Zhao L, Hammamieh R, Kacena MA. Gene-metabolite networks associated with impediment of bone fracture repair in spaceflight. Comput Struct Biotechnol J 2021; 19:3507-3520. [PMID: 34194674 PMCID: PMC8220416 DOI: 10.1016/j.csbj.2021.05.050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/26/2021] [Accepted: 05/30/2021] [Indexed: 01/05/2023] Open
Abstract
Adverse effects of spaceflight on musculoskeletal health increase the risk of bone injury and impairment of fracture healing. Its yet elusive molecular comprehension warrants immediate attention, since space travel is becoming more frequent. Here we examined the effects of spaceflight on bone fracture healing using a 2 mm femoral segmental bone defect (SBD) model. Forty, 9-week-old, male C57BL/6J mice were randomized into 4 groups: 1) Sham surgery on Ground (G-Sham); 2) Sham surgery housed in Spaceflight (FLT-Sham); 3) SBD surgery on Ground (G-Surgery); and 4) SBD surgery housed in Spaceflight (FLT-Surgery). Surgery procedures occurred 4 days prior to launch; post-launch, the spaceflight mice were house in the rodent habitats on the International Space Station (ISS) for approximately 4 weeks before euthanasia. Mice remaining on the Earth were subjected to identical housing and experimental conditions. The right femur from half of the spaceflight and ground groups was investigated by micro-computed tomography (µCT). In the remaining mice, the callus regions from surgery groups and corresponding femoral segments in sham mice were probed by global transcriptomic and metabolomic assays. µCT confirmed escalated bone loss in FLT-Sham compared to G-Sham mice. Comparing to their respective on-ground counterparts, the morbidity gene-network signal was inhibited in sham spaceflight mice but activated in the spaceflight callus. µCT analyses of spaceflight callus revealed increased trabecular spacing and decreased trabecular connectivity. Activated apoptotic signals in spaceflight callus were synchronized with inhibited cell migration signals that potentially hindered the wound site to recruit growth factors. A major pro-apoptotic and anti-migration gene network, namely the RANK-NFκB axis, emerged as the central node in spaceflight callus. Concluding, spaceflight suppressed a unique biomolecular mechanism in callus tissue to facilitate a failed regeneration, which merits a customized intervention strategy.
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Affiliation(s)
| | - Ariane Zamarioli
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Orthopaedics and Anaesthesiology, Ribeirão Preto Medical School, SP, Brazil
| | - Aarti Gautam
- Medical Readiness Systems Biology, CMPN, WRAIR, Silver Spring, MD, USA
| | - Ross Campbell
- Medical Readiness Systems Biology, CMPN, WRAIR, Silver Spring, MD, USA
- Geneva Foundation, Medical Readiness Systems Biology, CMPN, WRAIR, Silver Spring, MD, USA
| | - Stephen K Mendenhall
- Department of Neurological Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Paul J. Childress
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - George Dimitrov
- Medical Readiness Systems Biology, CMPN, WRAIR, Silver Spring, MD, USA
- Geneva Foundation, Medical Readiness Systems Biology, CMPN, WRAIR, Silver Spring, MD, USA
| | - Bintu Sowe
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
- ORISE, Medical Readiness Systems Biology, CMPN, WRAIR, Silver Spring, MD, USA
| | - Aamir Tucker
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Liming Zhao
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Rasha Hammamieh
- Medical Readiness Systems Biology, CMPN, WRAIR, Silver Spring, MD, USA
| | - Melissa A. Kacena
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
- Richard L. Roudebush VA Medical Center, Indianapolis, IN, USA
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Uda Y, Spatz JM, Hussein A, Garcia JH, Lai F, Dedic C, Fulzele K, Dougherty S, Eberle M, Adamson C, Misener L, Gerstenfeld L, Divieti Pajevic P. Global transcriptomic analysis of a murine osteocytic cell line subjected to spaceflight. FASEB J 2021; 35:e21578. [PMID: 33835498 DOI: 10.1096/fj.202100059r] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/13/2021] [Accepted: 03/22/2021] [Indexed: 01/18/2023]
Abstract
Bone loss is a major health concern for astronauts during long-term spaceflight and for patients during prolonged bed rest or paralysis. Growing evidence suggests that osteocytes, the most abundant cells in the mineralized bone matrix, play a key role in sensing mechanical forces applied to the skeleton and integrating the orchestrated response into subcellular biochemical signals to modulate bone homeostasis. However, the precise molecular mechanisms underlying both mechanosensation and mechanotransduction in late-osteoblast-to-osteocyte cells under microgravity (µG) have yet to be elucidated. To unravel the mechanisms by which late osteoblasts and osteocytes sense and respond to mechanical unloading, we exposed the osteocytic cell line, Ocy454, to 2, 4, or 6 days of µG on the SpaceX Dragon-6 resupply mission to the International Space Station. Our results showed that µG impairs the differentiation of osteocytes, consistent with prior osteoblast spaceflight experiments, which resulted in the downregulation of key osteocytic genes. Importantly, we demonstrate the modulation of critical glycolysis pathways in osteocytes subjected to microgravity and discovered a set of mechanical sensitive genes that are consistently regulated in multiple cell types exposed to microgravity suggesting a common, yet to be fully elucidated, genome-wide response to microgravity. Ground-based simulated microgravity experiments utilizing the NASA rotating-wall-vessel were unable to adequately replicate the changes in microgravity exposure highlighting the importance of spaceflight missions to understand the unique environmental stress that microgravity presents to diverse cell types. In summary, our findings demonstrate that osteocytes respond to µG with an increase in glucose metabolism and oxygen consumption.
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Affiliation(s)
- Yuhei Uda
- Department of Translational Dental Medicine, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA
| | - Jordan M Spatz
- Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.,School of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Amira Hussein
- Department of Orthopaedic Surgery, Boston University School of Medicine, Boston, MA, USA
| | - Joseph H Garcia
- School of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Forest Lai
- Department of Translational Dental Medicine, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA
| | - Chris Dedic
- Department of Translational Dental Medicine, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA
| | - Keertik Fulzele
- Department of Translational Dental Medicine, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA
| | | | | | | | | | - Louis Gerstenfeld
- Department of Orthopaedic Surgery, Boston University School of Medicine, Boston, MA, USA
| | - Paola Divieti Pajevic
- Department of Translational Dental Medicine, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA.,Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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