1
|
Cuyutupa VR, Moser D, Diedrich V, Cheng Y, Billaud JN, Haugg E, Singer D, Bereiter-Hahn J, Herwig A, Choukér A. Blood transcriptomics mirror regulatory mechanisms during hibernation-a comparative analysis of the Djungarian hamster with other mammalian species. Pflugers Arch 2023; 475:1149-1160. [PMID: 37542567 PMCID: PMC10499953 DOI: 10.1007/s00424-023-02842-8] [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: 03/30/2023] [Revised: 06/13/2023] [Accepted: 07/11/2023] [Indexed: 08/07/2023]
Abstract
Hibernation enables many species of the mammalian kingdom to overcome periods of harsh environmental conditions. During this physically inactive state metabolic rate and body temperature are drastically downregulated, thereby reducing energy requirements (torpor) also over shorter time periods. Since blood cells reflect the organism´s current condition, it was suggested that transcriptomic alterations in blood cells mirror the torpor-associated physiological state. Transcriptomics on blood cells of torpid and non-torpid Djungarian hamsters and QIAGEN Ingenuity Pathway Analysis (IPA) revealed key target molecules (TMIPA), which were subjected to a comparative literature analysis on transcriptomic alterations during torpor/hibernation in other mammals. Gene expression similarities were identified in 148 TMIPA during torpor nadir among various organs and phylogenetically different mammalian species. Based on TMIPA, IPA network analyses corresponded with described inhibitions of basic cellular mechanisms and immune system-associated processes in torpid mammals. Moreover, protection against damage to the heart, kidney, and liver was deduced from this gene expression pattern in blood cells. This study shows that blood cell transcriptomics can reflect the general physiological state during torpor nadir. Furthermore, the understanding of molecular processes for torpor initiation and organ preservation may have beneficial implications for humans in extremely challenging environments, such as in medical intensive care units and in space.
Collapse
Affiliation(s)
- Valeria Rojas Cuyutupa
- Laboratory of Translational Research 'Stress and Immunity', Department of Anesthesiology, LMU Hospital, Ludwig-Maximilians-Universität in Munich, Marchioninistr. 15, Munich, 81377, Germany
| | - Dominique Moser
- Laboratory of Translational Research 'Stress and Immunity', Department of Anesthesiology, LMU Hospital, Ludwig-Maximilians-Universität in Munich, Marchioninistr. 15, Munich, 81377, Germany
| | - Victoria Diedrich
- Institute of Neurobiology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Yiming Cheng
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität in Munich, Munich, Germany
- Institute for Diabetes and Obesity, Helmholtz, Munich, Neuherberg, Germany
| | | | - Elena Haugg
- Institute of Neurobiology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Dominique Singer
- Division of Neonatology and Pediatric Critical Care Medicine, University Medical Center Eppendorf, Hamburg, Germany
| | - Jürgen Bereiter-Hahn
- Institute for Cell Biology and Neurosciences, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Annika Herwig
- Institute of Neurobiology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany.
| | - Alexander Choukér
- Laboratory of Translational Research 'Stress and Immunity', Department of Anesthesiology, LMU Hospital, Ludwig-Maximilians-Universität in Munich, Marchioninistr. 15, Munich, 81377, Germany.
| |
Collapse
|
2
|
Breedon SA, Varma A, Quintero-Galvis JF, Gaitán-Espitia JD, Mejías C, Nespolo RF, Storey KB. Torpor-responsive microRNAs in the heart of the Monito del monte, Dromiciops gliroides. Biofactors 2023; 49:1061-1073. [PMID: 37219063 DOI: 10.1002/biof.1976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 05/14/2023] [Indexed: 05/24/2023]
Abstract
The marsupial Monito del monte (Dromiciops gliroides) utilizes both daily and seasonal bouts of torpor to preserve energy and prolong survival during periods of cold and unpredictable food availability. Torpor involves changes in cellular metabolism, including specific changes to gene expression that is coordinated in part, by the posttranscriptional gene silencing activity of microRNAs (miRNA). Previously, differential miRNA expression has been identified in D. gliroides liver and skeletal muscle; however, miRNAs in the heart of Monito del monte remained unstudied. In this study, the expression of 82 miRNAs was assessed in the hearts of active and torpid D. gliroides, finding that 14 were significantly differentially expressed during torpor. These 14 miRNAs were then used in bioinformatic analyses to identify Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways that were predicted to be most affected by these differentially expressed miRNAs. Overexpressed miRNAs were predicted to primarily regulate glycosaminoglycan biosynthesis, along with various signaling pathways such as Phosphoinositide-3-kinase/protein kinase B and transforming growth factor-β. Similarly, signaling pathways including phosphatidylinositol and Hippo were predicted to be regulated by the underexpression of miRNAs during torpor. Together, these results suggest potential molecular adaptations that protect against irreversible tissue damage and enable continued cardiac and vascular function despite hypothermia and limited organ perfusion during torpor.
Collapse
Affiliation(s)
- Sarah A Breedon
- Department of Biology and Institute of Biochemistry, Carleton University, Ottawa, Ontario, Canada
| | - Anchal Varma
- Department of Biology and Institute of Biochemistry, Carleton University, Ottawa, Ontario, Canada
| | - Julian F Quintero-Galvis
- Facultad de Ciencias, Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Valdivia, Chile
| | - Juan Diego Gaitán-Espitia
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Hong Kong, China
| | - Carlos Mejías
- Facultad de Ciencias, Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Valdivia, Chile
- Millenium Nucleus of Limit of Life (LiLi), Valdivia, Chile
| | - Roberto F Nespolo
- Facultad de Ciencias, Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Valdivia, Chile
- Millenium Nucleus of Limit of Life (LiLi), Valdivia, Chile
| | - Kenneth B Storey
- Department of Biology and Institute of Biochemistry, Carleton University, Ottawa, Ontario, Canada
| |
Collapse
|
3
|
Ingelson-Filpula WA, Cheng H, Eaton L, Pamenter ME, Storey KB. Small RNA sequencing in hypoxic naked mole-rat hearts suggests microRNA regulation of RNA- and translation-related processes. FEBS Lett 2022; 596:2821-2833. [PMID: 36120811 DOI: 10.1002/1873-3468.14499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/09/2022] [Accepted: 09/12/2022] [Indexed: 11/09/2022]
Abstract
The naked mole-rat (Heterocephalus glaber) regularly endures intermittent periods of hypoxia in its burrows, surviving in part due to metabolic rate depression (MRD)-a strategy of conserving cellular resources by downregulating nonessential gene expression and reorganizing cellular processes. MicroRNA (miRNA) are short, noncoding RNAs already implicated for their roles in numerous models of extreme environmental stress; given their rapid, reversible nature, they are ideal for implementing MRD. We performed small RNA sequencing on cardiac tissue from normoxic vs. 24 h hypoxic naked mole-rats, and used bioinformatics to predict eighteen miRNAs which may be differentially regulated during hypoxia. Gene Ontology and KEGG pathway mapping further suggest these miRNAs play roles in largely translation-related functions, including RNA processing and catabolism.
Collapse
Affiliation(s)
- W Aline Ingelson-Filpula
- Institute of Biochemistry and Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Hang Cheng
- Biology Department, University of Ottawa, Marie-Curie Pvt, Ottawa, Ontario, K1N 9A7, Canada
| | - Liam Eaton
- Biology Department, University of Ottawa, Marie-Curie Pvt, Ottawa, Ontario, K1N 9A7, Canada
| | - Matthew E Pamenter
- Biology Department, University of Ottawa, Marie-Curie Pvt, Ottawa, Ontario, K1N 9A7, Canada.,Brain and Mind Research Institute, University of Ottawa, Ottawa, Ontario, Canada
| | - Kenneth B Storey
- Institute of Biochemistry and Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| |
Collapse
|