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Qaisar R. The emerging roles of necroptosis in skeletal muscle health and disease. Pflugers Arch 2024:10.1007/s00424-024-02994-1. [PMID: 39037477 DOI: 10.1007/s00424-024-02994-1] [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: 05/02/2024] [Revised: 07/15/2024] [Accepted: 07/16/2024] [Indexed: 07/23/2024]
Abstract
Necroptosis is a regulated form of cell death with implications in various physiological and pathological processes in multiple tissues. However, the relevant findings from post-mitotic tissues, such as skeletal muscle, are scarce. This review summarizes the potential contributions of necroptosis to skeletal muscle health and diseases. It first discusses the physiological roles of necroptosis in muscle regeneration and development. It then summarizes the contributions of necroptosis to the pathogenesis of multiple muscle diseases, including muscular dystrophies, inflammatory myopathies, cachexia, and neuromuscular disorders. Lastly, it unravels the gaps in our understanding and therapeutic challenges of inhibiting necroptosis as a potential intervention for muscle diseases. Specifically, the findings from the transgenic animal models and the use of pharmacological inhibitors of necroptosis are discussed with relevance to improving the structure and/or function of skeletal muscle in various diseases. Recent developments from experimental animal models and clinical data are presented to discuss the roles of necroptosis in skeletal muscle health and diseases.
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Affiliation(s)
- Rizwan Qaisar
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, 27272, United Arab Emirates.
- Space Medicine Research Group, Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, 27272, United Arab Emirates.
- Cardiovascular Research Group, Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, 27272, United Arab Emirates.
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Qaisar R, Karim A, Iqbal MS, Ahmad F, Hussain MA. Tracking the Plasma C-Terminal Agrin Fragment as a Biomarker of Neuromuscular Decline in 18- to 87-Year-Old Men. Mol Diagn Ther 2024:10.1007/s40291-024-00724-y. [PMID: 38961032 DOI: 10.1007/s40291-024-00724-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2024] [Indexed: 07/05/2024]
Abstract
OBJECTIVES Plasma C-terminal agrin-fragment-22 (CAF22), a breakdown product of neuromuscular junction, is a potential biomarker of muscle loss. However, its levels from adolescence to octogenarians are unknown. METHODS We evaluated young (18-34 years, n = 203), middle-aged (35-59 years, n = 163), and old men (60-87 years, n = 143) for CAF22, handgrip strength (HGS), appendicular skeletal-mass index (ASMI), and gait speed. RESULTS We found an age-associated increase in CAF22 from young (100.9 ± 29 pmol) to middle-aged (128.3 ± 38.7 pmol) and older men (171.5 ± 35.5 pmol) (all p<0.05). This was accompanied by a gradual reduction in HGS (37.7 ± 6.1 kg, 30.2 ± 5.2 kg, and 26.6 ± 4.7 kg, for young, middle-aged, and old men, respectively), ASMI (8.02 ± 1.02 kg/m2, 7.65 ± 0.92 kg/m2, 6.87 ± 0.93 kg/m2, for young, middle-aged, and old men, respectively), and gait speed (1.29 ± 0.24 m/s, 1.05 ± 0.16 m/s, and 0.81 ± 0.13 m/s, for young, middle-aged, and old men, respectively). After adjustment for age, we found negative regressions of CAF22 with HGS (- 0.0574, p < 0.001) and gait speed (- 0.0162, p < 0.001) in the cumulative cohort. The receiver operating characteristics analysis revealed significant efficacy of plasma CAF22 in diagnosing muscle weakness (HGS < 27 kg) (middle-aged men; AUC = 0.731, 95% CI = 0.629-0.831, p < 0.001, Older men; AUC = 0.816, 95% CI = 0.761-0.833, p < 0.001), and low gait speed (0.8 m/s) (middle-aged men; AUC = 0.737, 95% CI = 0.602-0.871, p < 0.001, older men; AUC = 0.829, 95% CI = 0.772-0.886, p < 0.001), and a modest efficacy in diagnosing sarcopenia (middle-aged men; AUC = 0.701, 95% CI = 0.536-0.865, p = 0.032, older men; AUC = 0.822, 95% CI = 0.759-0.884, p < 0.001) in middle-aged and older men. CONCLUSION Altogether, CAF22 increases with advancing age and may be a reliable marker of muscle weakness and low gait speed.
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Affiliation(s)
- Rizwan Qaisar
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates.
- Space Medicine Research Group, Sharjah Institute for Medical and Health Sciences, University of Sharjah, 27272, Sharjah, United Arab Emirates.
- Cardiovascular Research Group, Sharjah Institute for Medical and Health Sciences, University of Sharjah, 27272, Sharjah, United Arab Emirates.
| | - Asima Karim
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - M Shahid Iqbal
- Department of Neurology and Stroke Medicine, Rehman Medical Institute, Peshawar, 25124, Pakistan
| | - Firdos Ahmad
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Space Medicine Research Group, Sharjah Institute for Medical and Health Sciences, University of Sharjah, 27272, Sharjah, United Arab Emirates
- Cardiovascular Research Group, Sharjah Institute for Medical and Health Sciences, University of Sharjah, 27272, Sharjah, United Arab Emirates
| | - M Azhar Hussain
- Department of Finance and Economics, College of Business Administration, University of Sharjah, 27272, Sharjah, United Arab Emirates
- Department of Social Sciences and Business, Roskilde University, 4000, Roskilde, Denmark
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Al-Daghestani H, Qaisar R, Al Kawas S, Ghani N, Rani KGA, Azeem M, Hasnan HK, Kassim NK, Samsudin AR. Pharmacological inhibition of endoplasmic reticulum stress mitigates osteoporosis in a mouse model of hindlimb suspension. Sci Rep 2024; 14:4719. [PMID: 38413677 PMCID: PMC10899598 DOI: 10.1038/s41598-024-54944-7] [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: 11/01/2023] [Accepted: 02/19/2024] [Indexed: 02/29/2024] Open
Abstract
Hindlimb suspension (HLS) mice exhibit osteoporosis of the hindlimb bones and may be an excellent model to test pharmacological interventions. We investigated the effects of inhibiting endoplasmic reticulum (ER) stress with 4-phenyl butyrate (4-PBA) on the morphology, physicochemical properties, and bone turnover markers of hindlimbs in HLS mice. We randomly divided 21 male C57BL/6J mice into three groups, ground-based controls, untreated HLS group and 4-PBA treated group (HLS+4PBA) (100mg/kg/day, intraperitoneal) for 21 days. We investigated histopathology, micro-CT imaging, Raman spectroscopic analysis, and gene expression. Untreated HLS mice exhibited reduced osteocyte density, multinucleated osteoclast-like cells, adipocyte infiltration, and reduced trabecular striations on micro-CT than the control group. Raman spectroscopy revealed higher levels of ER stress, hydroxyproline, non-collagenous proteins, phenylalanine, tyrosine, and CH2Wag as well as a reduction in proteoglycans and adenine. Furthermore, bone alkaline phosphatase and osteocalcin were downregulated, while Cathepsin K, TRAP, and sclerostin were upregulated. Treatment with 4-PBA partially restored normal bone histology, increased collagen crosslinking, and mineralization, promoted anti-inflammatory markers, and downregulated bone resorption markers. Our findings suggest that mitigating ER stress with 4-PBA could be a therapeutic intervention to offset osteoporosis in conditions mimicking hindlimb suspension.
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Affiliation(s)
- Hiba Al-Daghestani
- Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, 27272, UAE
| | - Rizwan Qaisar
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, 27272, UAE
- Space Medicine Research Group, Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, 27272, UAE
| | - Sausan Al Kawas
- Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, 27272, UAE
| | - Nurhafizah Ghani
- School of Dental Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - K G Aghila Rani
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, 27272, UAE
| | - Muhammad Azeem
- Department of Mathematical and Physical Sciences, University of Nizwa, Nizwa 33, Sultanate of Oman
| | - Hijaz Kamal Hasnan
- Department of Geology, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Nur Karyatee Kassim
- School of Dental Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia.
| | - A R Samsudin
- Department of Oral and Craniofacial Health Sciences, College of Dental Medicine, University of Sharjah, Sharjah, 27272, UAE.
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Shama S, Ranade AV, Qaisar R, Khan NA, Tauseef I, Elmoselhi A, Siddiqui R. Enhancing microbial diversity as well as multi-organ health in hind-limb unloaded mice. LIFE SCIENCES IN SPACE RESEARCH 2024; 40:62-71. [PMID: 38245349 DOI: 10.1016/j.lssr.2023.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 08/21/2023] [Accepted: 08/28/2023] [Indexed: 01/22/2024]
Abstract
During space travel, the gut microbiota is changed which can lead to health-related issues. Previously, we utilized the hind-limb unloaded (HU) mouse, which is an established ground-based in-vivo model of microgravity and observed altered gut microbiota. In this study, we evaluated the beneficial effects of novel bacterial conditioned media in HU mice to understand if they can offset the effects of unloading in the HU mouse model. We aimed to explore the influence of bacterial conditioned media on diversity and quantity of intestinal microbes in HU mice, and investigated the microarchitecture of mice retinas and kidneys to evaluate the potential systemic effects of bacterial conditioned media in HU mice. Four-month-old, male C57/Bl6 mice were separated into groups: including the ground-based control group, the HU group mice fed with vehicle as placebo (HU-placebo mice), and the HU group fed with bacterial conditioned media (HU-CP mice) and kept under controlled environmental conditions for three weeks. Next, mice were sacrificed; gut dissections were conducted, and metagenomic analysis of bacterial species was performed via DNA extraction and 16S rRNA analysis. The results revealed an HU-induced reduction in intestinal microbial diversity, and an increase in pathogenic bacteria dominated by Firmicutes (45%). In contrast, supplementation with bacterial conditioned media for three weeks led to a significant increase in gut microbial diversity with noticeable changes in the OTUs abundance in the HU mice. Additionally, HU-induced muscle weakness and structural abnormalities in the retina and kidney were partially prevented with bacterial conditioned media. Moreover, a greater diversity of several bacteria in the HU-CP was observed including, Bacteriodota, Firmicutes, Proteobacteria, Actionobacteriota, Verrucomicorbiota, Cyanobacteria, Gemmatimonadota, Acidobacteriota, Chloroflexi, Myxococcota, and others. Prospective research involving molecular mechanistic studies are needed to comprehend the systemic effects of bacterial metabolites conditioned media on experimental animal models under chronic stress.
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Affiliation(s)
- Shama Shama
- Department of Clinical Sciences, College of Medicine, University of Sharjah, University City, Sharjah 27272, United Arab Emirates; Department of Microbiology, Hazara University, Mansehra 21300, Pakistan
| | - Anu V Ranade
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, University City, Sharjah 27272, United Arab Emirates
| | - Rizwan Qaisar
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, University City, Sharjah 27272, United Arab Emirates
| | - Naveed Ahmed Khan
- Microbiota Research Center, Istinye University, Istanbul, 34010, Turkey.
| | - Isfahan Tauseef
- Department of Microbiology, Hazara University, Mansehra 21300, Pakistan.
| | - Adel Elmoselhi
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, University City, Sharjah 27272, United Arab Emirates
| | - Ruqaiyyah Siddiqui
- Microbiota Research Center, Istinye University, Istanbul, 34010, Turkey; College of Arts and Sciences, American University of Sharjah, University City, Sharjah 26666, United Arab Emirates
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Ibrahim Z, Khan NA, Qaisar R, Saleh MA, Siddiqui R, Al-Hroub HM, Giddey AD, Semreen MH, Soares NC, Elmoselhi AB. Serum multi-omics analysis in hindlimb unloading mice model: Insights into systemic molecular changes and potential diagnostic and therapeutic biomarkers. Heliyon 2024; 10:e23592. [PMID: 38187258 PMCID: PMC10770503 DOI: 10.1016/j.heliyon.2023.e23592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 01/09/2024] Open
Abstract
Microgravity, in space travel and prolonged bed rest conditions, induces cardiovascular deconditioning along with skeletal muscle mass loss and weakness. The findings of microgravity research may also aid in the understanding and treatment of human health conditions on Earth such as muscle atrophy, and cardiovascular diseases. Due to the paucity of biomarkers and the unknown underlying mechanisms of cardiovascular and skeletal muscle deconditioning in these environments, there are insufficient diagnostic and preventative measures. In this study, we employed hindlimb unloading (HU) mouse model, which mimics astronauts in space and bedridden patients, to first evaluate cardiovascular and skeletal muscle function, followed by proteomics and metabolomics LC-MS/MS-based analysis using serum samples. Three weeks of unloading caused changes in the function of the cardiovascular system in c57/Bl6 mice, as seen by a decrease in mean arterial pressure and heart weight. Unloading for three weeks also changed skeletal muscle function, causing a loss in grip strength in HU mice and atrophy of skeletal muscle indicated by a reduction in muscle mass. These modifications were partially reversed by a two-week recovery period of reloading condition, emphasizing the significance of the recovery process. Proteomics analysis revealed 12 dysregulated proteins among the groups, such as phospholipid transfer protein, Carbonic anhydrase 3, Parvalbumin alpha, Major urinary protein 20 (Mup20), Thrombospondin-1, and Apolipoprotein C-IV. On the other hand, metabolomics analysis showed altered metabolites among the groups such as inosine, hypoxanthine, xanthosine, sphinganine, l-valine, 3,4-Dihydroxyphenylglycol, and l-Glutamic acid. The joint data analysis revealed that HU conditions mainly impacted pathways such as ABC transporters, complement and coagulation cascades, nitrogen metabolism, and purine metabolism. Overall, our results indicate that microgravity environment induces significant alterations in the function, proteins, and metabolites of these mice. These observations suggest the potential utilization of these proteins and metabolites as novel biomarkers for assessing and mitigating cardiovascular and skeletal muscle deconditioning associated with such conditions.
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Affiliation(s)
- Zeinab Ibrahim
- Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
- Basic Medical Sciences Department, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Naveed A. Khan
- Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
- Clinical Sciences Department, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
- Microbiota Research Center, Istinye University, Istanbul, 34010, Turkey
| | - Rizwan Qaisar
- Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
- Basic Medical Sciences Department, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Mohamed A. Saleh
- Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
- Clinical Sciences Department, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Ruqaiyyah Siddiqui
- Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University Edinburgh, EH14 4AS UK
- Microbiota Research Center, Istinye University, Istanbul, 34010, Turkey
| | - Hamza M. Al-Hroub
- Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Alexander D. Giddey
- Center for Applied and Translational Genomics, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Mohammad Harb Semreen
- Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
- Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Nelson C. Soares
- Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
- Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates
- Laboratory of Proteomics, Department of Human Genetics, National Institute of Health Doutor Ricardo Jorge (INSA), Av. Padre Cruz, Lisbon, 1649-016, Portugal
- Centre for Toxicogenomics and Human Health (ToxOmics), NOVA School/ Faculdade de Lisboa, Lisbon, Portugal
| | - Adel B. Elmoselhi
- Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
- Basic Medical Sciences Department, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
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Ahmad F, Marzook H, Gupta A, Aref A, Patil K, Khan AA, Saleh MA, Koch WJ, Woodgett JR, Qaisar R. GSK-3α aggravates inflammation, metabolic derangement, and cardiac injury post-ischemia/reperfusion. J Mol Med (Berl) 2023; 101:1379-1396. [PMID: 37707557 DOI: 10.1007/s00109-023-02373-w] [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: 06/04/2023] [Revised: 08/18/2023] [Accepted: 09/05/2023] [Indexed: 09/15/2023]
Abstract
Reperfusion after acute myocardial infarction further exaggerates cardiac injury and adverse remodeling. Irrespective of cardiac cell types, loss of specifically the α isoform of the protein kinase GSK-3 is protective in chronic cardiac diseases. However, the role of GSK-3α in clinically relevant ischemia/reperfusion (I/R)-induced cardiac injury is unknown. Here, we challenged cardiomyocyte-specific conditional GSK-3α knockout (cKO) and littermate control mice with I/R injury and investigated the underlying molecular mechanism using an in vitro GSK-3α gain-of-function model in AC16 cardiomyocytes post-hypoxia/reoxygenation (H/R). Analysis revealed a significantly lower percentage of infarct area in the cKO vs. control hearts post-I/R. Consistent with in vivo findings, GSK-3α overexpression promoted AC16 cardiomyocyte death post-H/R which was accompanied by an induction of reactive oxygen species (ROS) generation. Consistently, GSK-3α gain-of-function caused mitochondrial dysfunction by significantly suppressing mitochondrial membrane potential. Transcriptomic analysis of GSK-3α overexpressing cardiomyocytes challenged with hypoxia or H/R revealed that NOD-like receptor (NLR), TNF, NF-κB, IL-17, and mitogen-activated protein kinase (MAPK) signaling pathways were among the most upregulated pathways. Glutathione and fatty acid metabolism were among the top downregulated pathways post-H/R. Together, these observations suggest that loss of cardiomyocyte-GSK-3α attenuates cardiac injury post-I/R potentially through limiting the myocardial inflammation, mitochondrial dysfunction, and metabolic derangement. Therefore, selective inhibition of GSK-3α may provide beneficial effects in I/R-induced cardiac injury and remodeling. KEY MESSAGES: GSK-3α promotes cardiac injury post-ischemia/reperfusion (I/R). GSK-3α regulates inflammatory and metabolic pathways post-hypoxia/reoxygenation (H/R). GSK-3α overexpression upregulates NOD-like receptor (NLR), TNF, NF-kB, IL-17, and MAPK signaling pathways in cardiomyocytes post-H/R. GSK-3α downregulates glutathione and fatty acid metabolic pathways in cardiomyocytes post-H/R.
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Affiliation(s)
- Firdos Ahmad
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, 27272, UAE.
- Cardiovascular Research Group, Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, 27272, UAE.
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, TN, 37240, USA.
| | - Hezlin Marzook
- Cardiovascular Research Group, Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, 27272, UAE
| | - Anamika Gupta
- Cardiovascular Research Group, Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, 27272, UAE
| | - Aseel Aref
- Cardiovascular Research Group, Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, 27272, UAE
| | - Kiran Patil
- LifeBytes India Pvt Ltd., Brigade Triumph, Hebbal Kempapura, Bengaluru, Karnataka, 560092, India
| | - Amir Ali Khan
- Department of Applied Biology, College of Science, University of Sharjah, Sharjah, 27272, UAE
- BioGrad Biobank, 61 Stephenson Way, Liverpool, L13 1HN, UK
| | - Mohamed A Saleh
- Cardiovascular Research Group, Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, 27272, UAE
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, 27272, UAE
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt
| | - Walter J Koch
- Department of Surgery, Duke University School of Medicine, Durham, NC, 27710, USA
| | - James R Woodgett
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, ON, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - Rizwan Qaisar
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, 27272, UAE
- Cardiovascular Research Group, Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, 27272, UAE
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Ranade A, Khan AA, Gul MT, Suresh S, Qaisar R, Ahmad F, Karim A. Suppression of endoplasmic reticulum stress reverses hindlimb unloading-induced hepatic cellular processes in mice. Biochim Biophys Acta Gen Subj 2023:130422. [PMID: 37406741 DOI: 10.1016/j.bbagen.2023.130422] [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: 03/05/2023] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/07/2023]
Abstract
BACKGROUND The Hindlimb unloaded mouse, an animal model of simulated microgravity demonstrates significant metabolic and hepatic derangements. However, cellular and molecular mechanisms driving liver dysfunction in Hindlimb unloaded mice are poorly characterized. METHODS We investigated the possible contribution of dysregulated protein homeostasis by endoplasmic reticulum, endoplasmic reticulum stress, to liver dysfunction during HU. C57BL/6j male mice were grouped into ground-based controls or Hindlimb unloaded groups treated daily with vehicle or 4-phenylbutyrate (4-PBA), a potent inhibitor of endoplasmic reticulum stress. Following three weeks of HU, mice were sacrificed, and liver tissues were dissected for further analysis. RESULTS Hindlimb unloaded was associated with hepatic atrophy and elevated endoplasmic reticulum stress, which was restored by 4-PBA treatment. The Gene Ontology analysis revealed the downregulation of genes primarily involved in liver metabolic and Wingless-related integration site (WNT) signaling pathways, while those related to cytochrome P450, and liver fibrosis were upregulated. The Kyoto Encyclopedia of Genes and Genomes pathway analysis revealed downregulation of several genes involved in metabolic pathways following treatment with 4-PBA, induced by HU. CONCLUSIONS We report several differential and uniquely expressed genes associated with microgravity-induced elevated ER stress and liver injury. Our data has translational potential in unraveling novel molecular targets for pharmaceutical therapies of liver diseases. GENERAL SIGNIFICANCE Our novel findings show a pathogenic role for elevated ER stress in liver injury in microgravity conditions.
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Affiliation(s)
- Anu Ranade
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Amir Ali Khan
- Department of Applied Biology, College of Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates; Human Genetics & Stem Cells Research Group, Research Institute of Sciences & Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Muhammad Tehsil Gul
- Department of Applied Biology, College of Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates; Human Genetics & Stem Cells Research Group, Research Institute of Sciences & Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Savitha Suresh
- Iron Biology Research Group, Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Rizwan Qaisar
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates; Cardiovascular Research Group, Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Firdos Ahmad
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates; Department of Biomedical Sciences, College of Health Sciences, Abu Dhabi University, Abu Dhabi 59911, United Arab Emirates
| | - Asima Karim
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah 27272, United Arab Emirates; Iron Biology Research Group, Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates.
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Marzook H, Gupta A, Tomar D, Saleh MA, Patil K, Semreen MH, Hamoudi R, Soares NC, Qaisar R, Ahmad F. Nicotinamide riboside kinase-2 regulates metabolic adaptation in the ischemic heart. J Mol Med (Berl) 2023; 101:311-326. [PMID: 36808555 DOI: 10.1007/s00109-023-02296-6] [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: 11/22/2022] [Revised: 01/18/2023] [Accepted: 02/06/2023] [Indexed: 02/23/2023]
Abstract
Ischemia-induced metabolic remodeling plays a critical role in the pathogenesis of adverse cardiac remodeling and heart failure however, the underlying molecular mechanism is largely unknown. Here, we assess the potential roles of nicotinamide riboside kinase-2 (NRK-2), a muscle-specific protein, in ischemia-induced metabolic switch and heart failure through employing transcriptomic and metabolomic approaches in ischemic NRK-2 knockout mice. The investigations revealed NRK-2 as a novel regulator of several metabolic processes in the ischemic heart. Cardiac metabolism and mitochondrial function and fibrosis were identified as top dysregulated cellular processes in the KO hearts post-MI. Several genes linked to mitochondrial function, metabolism, and cardiomyocyte structural proteins were severely downregulated in the ischemic NRK-2 KO hearts. Analysis revealed significantly upregulated ECM-related pathways which was accompanied by the upregulation of several key cell signaling pathways including SMAD, MAPK, cGMP, integrin, and Akt in the KO heart post-MI. Metabolomic studies identified profound upregulation of metabolites mevalonic acid, 3,4-dihydroxyphenylglycol, 2-penylbutyric acid, and uridine. However, other metabolites stearic acid, 8,11,14-eicosatrienoic acid, and 2-pyrrolidinone were significantly downregulated in the ischemic KO hearts. Taken together, these findings suggest that NRK-2 promotes metabolic adaptation in the ischemic heart. The aberrant metabolism in the ischemic NRK-2 KO heart is largely driven by dysregulated cGMP and Akt and mitochondrial pathways. KEY MESSAGES: Post-myocardial infarction metabolic switch critically regulates the pathogenesis of adverse cardiac remodeling and heart failure. Here, we report NRK-2 as a novel regulator of several cellular processes including metabolism and mitochondrial function post-MI. NRK-2 deficiency leads to downregulation of genes important for mitochondrial pathway, metabolism, and cardiomyocyte structural proteins in the ischemic heart. It was accompanied by upregulation of several key cell signaling pathways including SMAD, MAPK, cGMP, integrin, and Akt and dysregulation of numerous metabolites essential for cardiac bioenergetics. Taken together, these findings suggest that NRK-2 is critical for metabolic adaptation of the ischemic heart.
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Affiliation(s)
- Hezlin Marzook
- Research Institute of Medical and Health Sciences, University of Sharjah, P.O. 27272 , Sharjah, United Arab Emirates
| | - Anamika Gupta
- Research Institute of Medical and Health Sciences, University of Sharjah, P.O. 27272 , Sharjah, United Arab Emirates
| | - Dhanendra Tomar
- Department of Internal Medicine, Section On Cardiovascular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - Mohamed A Saleh
- Research Institute of Medical and Health Sciences, University of Sharjah, P.O. 27272 , Sharjah, United Arab Emirates
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, 27272, UAE
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt
| | - Kiran Patil
- Research Institute of Medical and Health Sciences, University of Sharjah, P.O. 27272 , Sharjah, United Arab Emirates
| | - Mohammad H Semreen
- Research Institute of Medical and Health Sciences, University of Sharjah, P.O. 27272 , Sharjah, United Arab Emirates
- Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, P.O. 27272, Sharjah, United Arab Emirates
| | - Rifat Hamoudi
- Research Institute of Medical and Health Sciences, University of Sharjah, P.O. 27272 , Sharjah, United Arab Emirates
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, 27272, UAE
- Division of Surgery and Interventional Science, University College London, London, W1W 7EJ, UK
| | - Nelson C Soares
- Research Institute of Medical and Health Sciences, University of Sharjah, P.O. 27272 , Sharjah, United Arab Emirates
- Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, P.O. 27272, Sharjah, United Arab Emirates
- Laboratory of Proteomics, Department of Human Genetics, National Institute of Health Doutor Ricardo Jorge (INSA), Av.a Padre Cruz, Lisbon, 1649-016, Portugal
| | - Rizwan Qaisar
- Research Institute of Medical and Health Sciences, University of Sharjah, P.O. 27272 , Sharjah, United Arab Emirates
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, 27272, UAE
| | - Firdos Ahmad
- Research Institute of Medical and Health Sciences, University of Sharjah, P.O. 27272 , Sharjah, United Arab Emirates.
- Department of Biomedical Sciences, College of Health Sciences, Abu Dhabi University, 59911, Abu Dhabi, United Arab Emirates.
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, TN, 37240, USA.
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Hindlimb unloading induces time-dependent disruption of testicular histology in mice. Sci Rep 2022; 12:17406. [PMID: 36258006 PMCID: PMC9579127 DOI: 10.1038/s41598-022-22385-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 10/13/2022] [Indexed: 01/12/2023] Open
Abstract
Mechanical unloading of the body in the hindlimb unloaded (HU) mice induces pathology in multiple organs, but the effects on testes are poorly characterized. We investigated the histology and Raman spectroscopy of the mouse testes following HU condition. We divided male, c57BL/6j mice into ground-based controls or experimental groups for two and four weeks of HU. The testes tissues were dissected after euthanasia to investigate histological and Raman spectroscopic analysis. We found an HU-induced atrophy of testes irrespective of the time duration (p < 0.05). Histological analysis revealed that the HU induced epithelial thinning, luminal widening, and spermatozoa decline in the seminiferous tubules of the mouse testes. In addition, we found a thickening of the epididymal epithelia and tunica albuginea. These changes were accompanied by a generalized depression in the Raman spectra, indicating an altered concentration and/or orientation of several molecules. We also report reduced signal intensities of hydroxyproline and tryptophan, potentially contributing to testicular pathology during HU. Taken together, our findings indicate that the two or four weeks of HU induce disruption of testicular architecture and molecular phenotypes. Our results may have implications for understanding and/or treating male infertility associated with prolonged bed rest and spaceflight.
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