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Stavely R, Robinson AM, Fraser S, Filippone RT, Stojanovska V, Eri R, Apostolopoulos V, Sakkal S, Nurgali K. Bone marrow-derived mesenchymal stem cells mitigate chronic colitis and enteric neuropathy via anti-inflammatory and anti-oxidative mechanisms. Sci Rep 2024; 14:6649. [PMID: 38503815 PMCID: PMC10951223 DOI: 10.1038/s41598-024-57070-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 03/14/2024] [Indexed: 03/21/2024] Open
Abstract
Current treatments for inflammatory bowel disease (IBD) are often inadequate due to limited efficacy and toxicity, leading to surgical resection in refractory cases. IBD's broad and complex pathogenesis involving the immune system, enteric nervous system, microbiome, and oxidative stress requires more effective therapeutic strategies. In this study, we investigated the therapeutic potential of bone marrow-derived mesenchymal stem cell (BM-MSC) treatments in spontaneous chronic colitis using the Winnie mouse model which closely replicates the presentation and inflammatory profile of ulcerative colitis. The 14-day BM-MSC treatment regimen reduced the severity of colitis, leading to the attenuation of diarrheal symptoms and recovery in body mass. Morphological and histological abnormalities in the colon were also alleviated. Transcriptomic analysis demonstrated that BM-MSC treatment led to alterations in gene expression profiles primarily downregulating genes related to inflammation, including pro-inflammatory cytokines, chemokines and other biomarkers of inflammation. Further evaluation of immune cell populations using immunohistochemistry revealed a reduction in leukocyte infiltration upon BM-MSC treatment. Notably, enteric neuronal gene signatures were the most impacted by BM-MSC treatment, which correlated with the restoration of neuronal density in the myenteric ganglia. Moreover, BM-MSCs exhibited neuroprotective effects against oxidative stress-induced neuronal loss through antioxidant mechanisms, including the reduction of mitochondrial-derived superoxide and attenuation of oxidative stress-induced HMGB1 translocation, potentially relying on MSC-derived SOD1. These findings suggest that BM-MSCs hold promise as a therapeutic intervention to mitigate chronic colitis by exerting anti-inflammatory effects and protecting the enteric nervous system from oxidative stress-induced damage.
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Affiliation(s)
- Rhian Stavely
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
- Department of Pediatric Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Ainsley M Robinson
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
| | - Sarah Fraser
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
| | | | - Vanesa Stojanovska
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia
| | - Rajaraman Eri
- School of Science, STEM College, RMIT University, Melbourne, VIC, Australia
| | - Vasso Apostolopoulos
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
- Immunology Program, Australian Institute of Musculoskeletal Science (AIMSS), Melbourne, VIC, Australia
| | - Samy Sakkal
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
| | - Kulmira Nurgali
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia.
- Department of Medicine Western Health, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC, Australia.
- Regenerative Medicine and Stem Cells Program, Australian Institute of Musculoskeletal Science (AIMSS), Melbourne, VIC, Australia.
- Enteric Neuropathy Lab, Western Centre for Health, Research and Education, St Albans, VIC, 3021, Australia.
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2
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Ephraim R, Fraser S, Devereaux J, Stavely R, Feehan J, Eri R, Nurgali K, Apostolopoulos V. Differential Gene Expression of Checkpoint Markers and Cancer Markers in Mouse Models of Spontaneous Chronic Colitis. Cancers (Basel) 2023; 15:4793. [PMID: 37835487 PMCID: PMC10571700 DOI: 10.3390/cancers15194793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/17/2023] [Accepted: 09/21/2023] [Indexed: 10/15/2023] Open
Abstract
The presence of checkpoint markers in cancer cells aids in immune escape. The identification of checkpoint markers and early cancer markers is of utmost importance to gain clarity regarding the relationship between colitis and progressive inflammation leading to cancer. Herein, the gene expression levels of checkpoint makers, cancer-related pathways, and cancer genes in colon tissues of mouse models of chronic colitis (Winnie and Winnie-Prolapse mice) using next-generation sequencing are determined. Winnie mice are a result of a Muc2 missense mutation. The identification of such genes and their subsequent expression and role at the protein level would enable novel markers for the early diagnosis of cancer in IBD patients. The differentially expressed genes in the colonic transcriptome were analysed based on the Kyoto Encyclopedia of Genes and Genomes pathway. The expression of several oncogenes is associated with the severity of IBD, with Winnie-Prolapse mice expressing a large number of key genes associated with development of cancer. This research presents a number of new targets to evaluate for the development of biomarkers and therapeutics.
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Affiliation(s)
- Ramya Ephraim
- Institute for Health and Sport, Victoria University, Melbourne, VIC 3030, Australia; (R.E.); (S.F.); (J.D.); (J.F.); (K.N.)
| | - Sarah Fraser
- Institute for Health and Sport, Victoria University, Melbourne, VIC 3030, Australia; (R.E.); (S.F.); (J.D.); (J.F.); (K.N.)
| | - Jeannie Devereaux
- Institute for Health and Sport, Victoria University, Melbourne, VIC 3030, Australia; (R.E.); (S.F.); (J.D.); (J.F.); (K.N.)
| | - Rhian Stavely
- Pediatric Surgery Research Laboratories, Department of Pediatric Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA;
| | - Jack Feehan
- Institute for Health and Sport, Victoria University, Melbourne, VIC 3030, Australia; (R.E.); (S.F.); (J.D.); (J.F.); (K.N.)
- Immunology Program, Australian Institute of Musculoskeletal Science (AIMSS), Melbourne, VIC 3021, Australia
| | - Rajaraman Eri
- STEM/School of Science, RMIT University, Melbourne, VIC 3001, Australia;
| | - Kulmira Nurgali
- Institute for Health and Sport, Victoria University, Melbourne, VIC 3030, Australia; (R.E.); (S.F.); (J.D.); (J.F.); (K.N.)
- Department of Medicine Western Health, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC 3010, Australia
- Regenerative Medicine and Stem Cells Program, Australian Institute of Musculoskeletal Science (AIMSS), Melbourne, VIC 3021, Australia
| | - Vasso Apostolopoulos
- Institute for Health and Sport, Victoria University, Melbourne, VIC 3030, Australia; (R.E.); (S.F.); (J.D.); (J.F.); (K.N.)
- Immunology Program, Australian Institute of Musculoskeletal Science (AIMSS), Melbourne, VIC 3021, Australia
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3
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Ratanpaul V, Stanley R, Brennan C, Eri R. Manipulating the kinetics and site of colonic fermentation with different fibre combinations ‐ a review. Int J Food Sci Technol 2023. [DOI: 10.1111/ijfs.16373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Affiliation(s)
- Vishal Ratanpaul
- CSIRO Agriculture & Food 671 Sneydes Road Werribee VIC 3030 Australia
- Department of Nutritional Sciences, Faculty of Health and Medical Sciences University of Surrey Guildford United Kingdom
| | - Roger Stanley
- Tasmanian Institute of Agriculture (TIA) University of Tasmania Launceston Tasmania 7250 Australia
| | - Charles Brennan
- School of Science, RMIT University GPO Box 2474 Melbourne VIC 3001 Australia
| | - Rajaraman Eri
- School of Science, RMIT University GPO Box 2474 Melbourne VIC 3001 Australia
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4
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Ahmad T, Ishaq M, Karpiniec S, Park A, Stringer D, Singh N, Ratanpaul V, Wolfswinkel K, Fitton H, Caruso V, Eri R. Oral Macrocystis pyrifera Fucoidan Administration Exhibits Anti-Inflammatory and Antioxidant Properties and Improves DSS-Induced Colitis in C57BL/6J Mice. Pharmaceutics 2022; 14:2383. [PMID: 36365201 PMCID: PMC9693024 DOI: 10.3390/pharmaceutics14112383] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/27/2022] [Accepted: 10/31/2022] [Indexed: 07/30/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a complex and multifactorial disorder characterised by relapsing and remitting inflammation of the intestinal tract. Oxidative stress (OS) is the result of an imbalance between production and accumulation of reactive oxygen species (ROS), which has been associated with inflammatory responses and implicated in the exacerbation of IBD. Fucoidan, a sulfated polysaccharide from brown seaweed, is a well-known anti-inflammatory agent and emerging evidence indicates that fucoidan extracts from Macrocystis pyrifera (MPF and DP-MPF) may also modulate oxidative stress. This study investigated the impact of fucoidan extracts, MPF and DP-MPF in a dextran sodium sulphate (DSS)-induced mouse model of acute colitis. 3% DSS was administered in C57BL/6J male mice over a period of 7 days, and MPF and DP-MPF were co-administered orally at a dose of 400 mg/kg body weight. Our results indicated that MPF and DP-MPF significantly prevented body weight loss, improved the disease activity index (DAI), restored colon lengths, reduced the wet colon weight, reduced spleen enlargement, and improved the overall histopathological score. Consistent with the reported anti-inflammatory functions, fucoidan extracts, MPF and DP-MPF significantly reduced the colonic levels of myeloperoxidase (MPO), nitric oxide (NO), malondialdehyde (MDA) and increased the levels of antioxidant enzymes, superoxide dismutase (SOD) and catalase (CAT). In addition, MPF and DP-MPF significantly inhibited levels of pro-inflammatory cytokines in colon-derived tissues. Collectively, our results indicate that MPF and DP-MPF exhibited anti-inflammatory and antioxidant effects representing a promising therapeutic strategy for the cure of IBD.
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Affiliation(s)
- Tauseef Ahmad
- College of Health and Medicine, University of Tasmania, Newnham, TAS 7248, Australia
| | - Muhammad Ishaq
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7001, Australia
| | | | - Ahyoung Park
- Marinova Pty Ltd., Cambridge, TAS 7170, Australia
| | | | - Neeraj Singh
- College of Health and Medicine, University of Tasmania, Newnham, TAS 7248, Australia
| | - Vishal Ratanpaul
- School of Science, RMIT University, Bundoora West Campus, Plenty Road, Melbourne, VIC 3083, Australia
| | - Karen Wolfswinkel
- Department of Pathology, Launceston General Hospital (LGH), Launceston, TAS 7250, Australia
| | | | - Vanni Caruso
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7001, Australia
- Istituto di Formazione e Ricerca in Scienze Algologiche (ISAL), Torre Pedrera, 47922 Rimini, Italy
| | - Rajaraman Eri
- College of Health and Medicine, University of Tasmania, Newnham, TAS 7248, Australia
- School of Science, RMIT University, Bundoora West Campus, Plenty Road, Melbourne, VIC 3083, Australia
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Stavely R, Rahman AA, Sahakian L, Prakash MD, Robinson AM, Hassanzadeganroudsari M, Filippone RT, Fraser S, Eri R, Bornstein JC, Apostolopoulos V, Nurgali K. Divergent Adaptations in Autonomic Nerve Activity and Neuroimmune Signaling Associated With the Severity of Inflammation in Chronic Colitis. Inflamm Bowel Dis 2022; 28:1229-1243. [PMID: 35380670 DOI: 10.1093/ibd/izac060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND The autonomic nervous system (ANS) is thought to play a critical role in the anti-inflammatory reflex pathway in acute colitis via its interaction with the spleen and colon. Inflammation in the intestine is associated with a blunting of vagal signaling and increased sympathetic activity. As a corollary, methods to restore sympatho-vagal balance are being investigated as therapeutic strategies for the treatment of intestinal inflammation. Nevertheless, it is indefinite whether these autonomic signaling adaptations in colitis are detrimental or beneficial to controlling intestinal inflammation. In this study, models of moderate and severe chronic colitis are utilized to resolve the correlations between sympatho-vagal signaling and the severity of intestinal inflammation. METHODS Spleens and colons were collected from Winnie (moderate colitis), Winnie-Prolapse (severe colitis), and control C57BL/6 mice. Changes to the size and histomorphology of spleens were evaluated. Flow cytometry was used to determine the expression of adrenergic and cholinergic signaling proteins in splenic B and T lymphocytes. The inflammatory profile of the spleen and colon was determined using a RT-PCR gene array. Blood pressure, heart rate, splanchnic sympathetic nerve and vagus nerve activity were recorded. RESULTS Spleens and colons from Winnie and Winnie-Prolapse mice exhibited gross abnormalities by histopathology. Genes associated with a pro-inflammatory response were upregulated in the colons from Winnie and further augmented in colons from Winnie-Prolapse mice. Conversely, many pro-inflammatory markers were downregulated in the spleens from Winnie-Prolapse mice. Heightened activity of the splanchnic nerve was observed in Winnie but not Winnie-Prolapse mice. Conversely, vagal nerve activity was greater in Winnie-Prolapse mice compared with Winnie mice. Splenic lymphocytes expressing α1 and β2 adrenoreceptors were reduced, but those expressing α7 nAChR and producing acetylcholine were increased in Winnie and Winnie-Prolapse mice. CONCLUSIONS Sympathetic activity may correlate with an adaptive mechanism to reduce the severity of chronic colitis. The Winnie and Winnie-Prolapse mouse models of moderate and severe chronic colitis are well suited to examine the pathophysiology of progressive chronic intestinal inflammation.
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Affiliation(s)
- Rhian Stavely
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia.,Department of Pediatric Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Ahmed A Rahman
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia.,Department of Pediatric Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Lauren Sahakian
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia
| | - Monica D Prakash
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia.,School of Health and Biomedical Sciences, RMIT University, Melbourne, Victoria, Australia
| | - Ainsley M Robinson
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia
| | - Majid Hassanzadeganroudsari
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia
| | - Rhiannon T Filippone
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia
| | - Sarah Fraser
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia
| | - Rajaraman Eri
- School of Health Sciences, The University of Tasmania, Launceston, Tasmania, Australia
| | - Joel C Bornstein
- Department of Physiology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Vasso Apostolopoulos
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia
| | - Kulmira Nurgali
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia.,Department of Medicine Western Health, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia.,Regenerative Medicine and Stem Cells Program, Australian Institute of Musculoskeletal Science (AIMSS), Melbourne, Victoria, Australia
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6
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Filippone RT, Dargahi N, Eri R, Uranga JA, Bornstein JC, Apostolopoulos V, Nurgali K. Potent CCR3 Receptor Antagonist, SB328437, Suppresses Colonic Eosinophil Chemotaxis and Inflammation in the Winnie Murine Model of Spontaneous Chronic Colitis. Int J Mol Sci 2022; 23:ijms23147780. [PMID: 35887133 PMCID: PMC9317166 DOI: 10.3390/ijms23147780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 02/04/2023] Open
Abstract
Eosinophils and their regulatory molecules have been associated with chronic intestinal inflammation and gastrointestinal dysfunctions; eosinophil accumulation in the gut is prominent in inflammatory bowel disease (IBD). The chemokine receptor CCR3 plays a pivotal role in local and systemic recruitment and activation of eosinophils. In this study, we targeted CCR3-ligand interactions with a potent CCR3 receptor antagonist, SB328437, to alleviate eosinophil-associated immunological responses in the Winnie model of spontaneous chronic colitis. Winnie and C57BL/6 mice were treated with SB328437 or vehicle. Clinical and histopathological parameters of chronic colitis were assessed. Flow cytometry was performed to discern changes in colonic, splenic, circulatory, and bone marrow-derived leukocytes. Changes to the serum levels of eosinophil-associated chemokines and cytokines were measured using BioPlex. Inhibition of CCR3 receptors with SB328437 attenuated disease activity and gross morphological damage to the inflamed intestines and reduced eosinophils and their regulatory molecules in the inflamed colon and circulation. SB328437 had no effect on eosinophils and their progenitor cells in the spleen and bone marrow. This study demonstrates that targeting eosinophils via the CCR3 axis has anti-inflammatory effects in the inflamed intestine, and also contributes to understanding the role of eosinophils as potential end-point targets for IBD treatment.
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Affiliation(s)
- Rhiannon T. Filippone
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, VIC 3021, Australia; (R.T.F.); (N.D.); (K.N.)
| | - Narges Dargahi
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, VIC 3021, Australia; (R.T.F.); (N.D.); (K.N.)
| | - Rajaraman Eri
- School of Health Sciences, The University of Tasmania, Launceston, TAS 7248, Australia;
| | - Jose A. Uranga
- Department of Basic Health Sciences, University Rey Juan Carlos (URJC), 28922 Alcorcón, Spain;
- High Performance Research Group in Physiopathology and Pharmacology of the Digestive System (NeuGut), University Rey Juan Carlos (URJC), 28922 Alcorcón, Spain
| | - Joel C. Bornstein
- Department of Anatomy and Physiology, The University of Melbourne, Melbourne, VIC 3010, Australia;
| | - Vasso Apostolopoulos
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, VIC 3021, Australia; (R.T.F.); (N.D.); (K.N.)
- Immunology Program, Australian Institute of Musculoskeletal Science (AIMSS), Melbourne, VIC 3021, Australia
- Correspondence:
| | - Kulmira Nurgali
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, VIC 3021, Australia; (R.T.F.); (N.D.); (K.N.)
- Department of Medicine-Western Health, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC 3010, Australia
- Regenerative Medicine and Stem Cells Program, Australian Institute of Musculoskeletal Science (AIMSS), Melbourne, VIC 3021, Australia
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Raut SB, Canales JJ, Ravindran M, Eri R, Benedek DM, Ursano RJ, Johnson LR. Effects of propranolol on the modification of trauma memory reconsolidation in PTSD patients: A systematic review and meta-analysis. J Psychiatr Res 2022; 150:246-256. [PMID: 35405409 DOI: 10.1016/j.jpsychires.2022.03.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 03/13/2022] [Accepted: 03/24/2022] [Indexed: 10/18/2022]
Abstract
Post-traumatic stress disorder (PTSD) develops after an exposure to a life-threatening event and is characterized by intrusive memories. According to memory reconsolidation theory retrieval of memory under certain conditions leads to its labilization and subsequent re-storage which could be disrupted by drugs. Propranolol has been the most commonly investigated drug for memory reconsolidation therapy in clinical trials. Intervention with propranolol have shown mixed results in PTSD patients with some studies showing improvement in symptoms while other failing to replicate these findings. We conducted a systematic review and meta-analysis to determine the efficacy of trauma memory disruption by propranolol on PTSD symptoms and physiological responses in PTSD patients. 3224 publications were assessed for eligibility. Seven studies on effects of propranolol on PTSD symptoms and 3 studies on effects of propranolol on physiological responses were incorporated in the meta-analyses. Overall, results indicate that propranolol did not show a beneficial effect on PTSD symptoms (standardized mean difference: 1.29; 95% CI = -2.16 - 0.17). Similarly, propranolol did not influence skin conductance (standardized mean difference: 0.77; 95% CI = -1.85 - 0.31) or EMG response (standardized mean difference: 0.16; 95% CI = -0.65 - 0.33). However, propranolol significantly reduced heart rate after trauma memory recall compared to placebo (standardized mean difference: 0.67; 95% CI = -1.27 to -0.07). This study finds a lack of evidence for the efficacy of propranolol on traumatic memory disruption, in PTSD patients, to recommend its routine clinical use. However, a high level of heterogeneity, variation in propranolol dosage and inadequate sample sizes mean that these findings require cautious interpretation.
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Affiliation(s)
- Sanket B Raut
- Schools of Psychological Sciences, College of Health and Medicine, University of Tasmania, TAS, 7250, Australia
| | - Juan J Canales
- Schools of Psychological Sciences, College of Health and Medicine, University of Tasmania, TAS, 7250, Australia
| | - Manoj Ravindran
- Department of Psychiatry, North West Private Hospital, Burnie, TAS, Australia
| | - Rajaraman Eri
- Health Sciences, College of Health and Medicine, University of Tasmania, TAS, 7250, Australia
| | - David M Benedek
- Center for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University School of Medicine, Bethesda, MD, 20814, USA
| | - Robert J Ursano
- Center for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University School of Medicine, Bethesda, MD, 20814, USA
| | - Luke R Johnson
- Schools of Psychological Sciences, College of Health and Medicine, University of Tasmania, TAS, 7250, Australia; Center for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University School of Medicine, Bethesda, MD, 20814, USA.
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8
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Ahmad T, Ishaq M, Eapen M, Singh N, Park A, Karpiniec S, Stringer D, Fitton H, Caruso V, Eri R. Fucoidan as an inhibitor of pro‐inflammatory cytokines: Potential candidate for treating inflammatory‐related conditions. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.l7837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tauseef Ahmad
- Department of Laboratory MedicineUniversity of TasmaniaLaunceston
| | - Muhammad Ishaq
- School of Pharmacy and PharmacologyUniversity of TasmaniaHobart
| | - Mathew Eapen
- Department of Laboratory MedicineUniversity of TasmaniaLaunceston
| | - Neeraj Singh
- Department of Laboratory MedicineUniversity of TasmaniaLaunceston
| | | | | | | | | | - Vanni Caruso
- School of Pharmacy and PharmacologyUniversity of TasmaniaHobart
| | - Rajaraman Eri
- Department of Laboratory MedicineUniversity of TasmaniaLaunceston
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9
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Robinson AM, Stavely R, Miller S, Eri R, Nurgali K. Mesenchymal stem cell treatment for enteric neuropathy in the Winnie mouse model of spontaneous chronic colitis. Cell Tissue Res 2022; 389:41-70. [PMID: 35536444 DOI: 10.1007/s00441-022-03633-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 04/26/2022] [Indexed: 11/30/2022]
Abstract
Inflammatory bowel disease (IBD) is a chronic gut inflammation with periods of acute flares and remission. Beneficial effects of a single dose of mesenchymal stem cell (MSC)-based treatment have been demonstrated in acute models of colitis. No studies investigated therapeutic effects of MSCs for the attenuation of enteric neuropathy in a chronic model of colitis. The short and long-term effects of MSC treatment in modulating inflammation and damage to the enteric nervous system (ENS) were studied in the Winnie mouse model of spontaneous chronic colitis highly representative of human IBD. Winnie mice received a single dose of either 1 × 106 human bone marrow-derived MSCs or 100µL PBS by intracolonic enema. C57BL/6 mice received 100µL PBS. Colon tissues were collected at 3 and 60 days post MSC administration to evaluate the short-term and long-term effects of MSCs on inflammation and enteric neuropathy by histological and immunohistochemical analyses. In a separate set of experiments, multiple treatments with 4 × 106 and 2 × 106 MSCs were performed and tissue collected at 3 days post treatment. Chronic intestinal inflammation in Winnie mice was associated with persistent diarrhea, perianal bleeding, morphological changes, and immune cell infiltration in the colon. Significant changes to the ENS, including impairment of cholinergic, noradrenergic and sensory innervation, and myenteric neuronal loss were prominent in Winnie mice. Treatment with a single dose of bone marrow-derived MSCs was ineffective in attenuating chronic inflammation and enteric neuropathy in Winnie.
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Affiliation(s)
- Ainsley M Robinson
- Institute for Health and Sport, Victoria University; Western Centre for Health, Research and Education, Sunshine Hospital, Melbourne, VIC, Australia
| | - Rhian Stavely
- Institute for Health and Sport, Victoria University; Western Centre for Health, Research and Education, Sunshine Hospital, Melbourne, VIC, Australia.,Department of Pediatric Surgery, Pediatric Surgery Research Laboratories, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Sarah Miller
- Institute for Health and Sport, Victoria University; Western Centre for Health, Research and Education, Sunshine Hospital, Melbourne, VIC, Australia
| | - Rajaraman Eri
- University of Tasmania, School of Health Sciences, Launceston, TAS, Australia
| | - Kulmira Nurgali
- Institute for Health and Sport, Victoria University; Western Centre for Health, Research and Education, Sunshine Hospital, Melbourne, VIC, Australia. .,Department of Medicine Western Health, The University of Melbourne, Melbourne, VIC, Australia. .,Regenerative Medicine and Stem Cells Program, Australian Institute of Musculoskeletal Science (AIMSS), Melbourne, VIC, Australia.
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10
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Raut SB, Marathe PA, van Eijk L, Eri R, Ravindran M, Benedek DM, Ursano RJ, Canales JJ, Johnson LR. Diverse therapeutic developments for post-traumatic stress disorder (PTSD) indicate common mechanisms of memory modulation. Pharmacol Ther 2022; 239:108195. [PMID: 35489438 DOI: 10.1016/j.pharmthera.2022.108195] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 12/20/2022]
Abstract
Post-traumatic stress disorder (PTSD), characterized by abnormally persistent and distressing memories, is a chronic debilitating condition in need of new treatment options. Current treatment guidelines recommend psychotherapy as first line management with only two drugs, sertraline and paroxetine, approved by U.S. Food and Drug Administration (FDA) for treatment of PTSD. These drugs have limited efficacy as they only reduce symptoms related to depression and anxiety without producing permanent remission. PTSD remains a significant public health problem with high morbidity and mortality requiring major advances in therapeutics. Early evidence has emerged for the beneficial effects of psychedelics particularly in combination with psychotherapy for management of PTSD, including psilocybin, MDMA, LSD, cannabinoids, ayahuasca and ketamine. MDMA and psilocybin reduce barrier to therapy by increasing trust between therapist and patient, thus allowing for modification of trauma related memories. Furthermore, research into the memory reconsolidation mechanisms has allowed for identification of various pharmacological targets to disrupt abnormally persistent memories. A number of pre-clinical and clinical studies have investigated novel and re-purposed pharmacological agents to disrupt fear memory in PTSD. Novel therapeutic approaches like neuropeptide Y, oxytocin, cannabinoids and neuroactive steroids have also shown potential for PTSD treatment. Here, we focus on the role of fear memory in the pathophysiology of PTSD and propose that many of these new therapeutic strategies produce benefits through the effect on fear memory. Evaluation of recent research findings suggests that while a number of drugs have shown promising results in preclinical studies and pilot clinical trials, the evidence from large scale clinical trials would be needed for these drugs to be incorporated in clinical practice.
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Affiliation(s)
- Sanket B Raut
- Schools of Psychological Sciences, College of Health and Medicine, University of Tasmania, TAS 7250, Australia
| | - Padmaja A Marathe
- Department of Pharmacology and Therapeutics, Seth GS Medical College & KEM Hospital, Parel, Mumbai 400 012, India
| | - Liza van Eijk
- Department of Psychology, College of Healthcare Sciences, James Cook University, QLD 4811, Australia
| | - Rajaraman Eri
- Health Sciences, College of Health and Medicine, University of Tasmania, TAS 7250, Australia
| | - Manoj Ravindran
- Medicine, College of Health and Medicine, University of Tasmania, TAS 7250, Australia; Department of Psychiatry, North-West Private Hospital, Burnie TAS 7320, Australia
| | - David M Benedek
- Centre for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University School of Medicine, Bethesda, MD 20814, USA
| | - Robert J Ursano
- Centre for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University School of Medicine, Bethesda, MD 20814, USA
| | - Juan J Canales
- Schools of Psychological Sciences, College of Health and Medicine, University of Tasmania, TAS 7250, Australia
| | - Luke R Johnson
- Schools of Psychological Sciences, College of Health and Medicine, University of Tasmania, TAS 7250, Australia; Centre for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University School of Medicine, Bethesda, MD 20814, USA.
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11
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Wu K, Ahmad T, Eri R. LIN28A: A multifunctional versatile molecule with future therapeutic potential. World J Biol Chem 2022; 13:35-46. [PMID: 35432768 PMCID: PMC8966501 DOI: 10.4331/wjbc.v13.i2.35] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 09/06/2021] [Accepted: 03/06/2022] [Indexed: 02/06/2023] Open
Abstract
An RNA-binding protein, LIN28A was initially discovered in nematodes Caenorhabditis elegans and regulated stem cell differentiation and proliferation. With the aid of mouse models and cancer stem cells models, LIN28A demonstrated a similar role in mammalian stem cells. Subsequent studies revealed LIN28A’s roles in regulating cell cycle and growth, tissue repair, and metabolism, especially glucose metabolism. Through regulation by pluripotency and neurotrophic factors, LIN28A performs these roles through let-7 dependent (binding to let-7) or independent (binding directly to mature mRNA) pathways. Elevated LIN28A levels are associated with cancers such as breast, colon, and ovarian cancers. Overexpressed LIN28A has been implicated in liver diseases and Rett syndrome whereas loss of LIN28A was linked to Parkinson’s disease. LIN28A inhibitors, LIN28A-specific nanobodies, and deubiquitinases targeting LIN28A could be feasible options for cancer treatments while drugs upregulating LIN28A could be used in regenerative therapy for neuropathies. We will review the upstream and downstream signalling pathways of LIN28A and its physiological functions. Then, we will examine current research and gaps in research regarding its mechanisms in conditions such as cancers, liver diseases, and neurological diseases. We will also look at the therapeutic potential of LIN28A in RNA-targeted therapies including small interfering RNAs and RNA-protein interactions.
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Affiliation(s)
- Kenneth Wu
- Department of Laboratory Medicine, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia
| | - Tauseef Ahmad
- Department of Laboratory Medicine, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia
| | - Rajaraman Eri
- Department of Laboratory Medicine, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia
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12
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Vemuri R, Martoni CJ, Kavanagh K, Eri R. Lactobacillus acidophilus DDS-1 Modulates the Gut Microbial Co-Occurrence Networks in Aging Mice. Nutrients 2022; 14:nu14050977. [PMID: 35267950 PMCID: PMC8912519 DOI: 10.3390/nu14050977] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 02/18/2022] [Accepted: 02/23/2022] [Indexed: 12/13/2022] Open
Abstract
Age-related alterations in the gut microbiome composition and its impacts on the host’s health have been well-described; however, detailed analyses of the gut microbial structure defining ecological microbe–microbe interactions are limited. One of the ways to determine these interactions is by understanding microbial co-occurrence patterns. We previously showed promising abilities of Lactobacillus acidophilus DDS-1 on the aging gut microbiome and immune system. However, the potential of the DDS-1 strain to modulate microbial co-occurrence patterns is unknown. Hence, we aimed to investigate the ability of L. acidophilus DDS-1 to modulate the fecal-, mucosal-, and cecal-related microbial co-occurrence networks in young and aging C57BL/6J mice. Our Kendall’s tau correlation measures of co-occurrence revealed age-related changes in the gut microbiome, which were characterized by a reduced number of nodes and associations across sample types when compared to younger mice. After four-week supplementation, L. acidophilus DDS-1 differentially modulated the overall microbial community structure in fecal and mucosal samples as compared to cecal samples. Beneficial bacteria such as Lactobacillus, Oscillospira, and Akkermansia acted as connectors in aging networks in response to L. acidophilus DDS-1 supplementation. Our findings provided the first evidence of the DDS-1-induced gut microbial ecological interactions, revealing the complex structure of microbial ecosystems with age.
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Affiliation(s)
- Ravichandra Vemuri
- Department of Pathology, Section on Comparative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA;
- College of Health and Medicine, School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia;
- Correspondence:
| | | | - Kylie Kavanagh
- Department of Pathology, Section on Comparative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA;
- Department of Biomedicine, University of Tasmania, Hobart, TAS 7000, Australia
| | - Rajaraman Eri
- College of Health and Medicine, School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia;
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Al Saedi A, Sharma S, Bani Hassan E, Chen L, Ghasem-Zadeh A, Hassanzadeganroudsari M, Gooi JH, Stavely R, Eri R, Miao D, Nurgali K, Duque G. Characterization of Skeletal Phenotype and Associated Mechanisms With Chronic Intestinal Inflammation in the Winnie Mouse Model of Spontaneous Chronic Colitis. Inflamm Bowel Dis 2022; 28:259-272. [PMID: 34347076 DOI: 10.1093/ibd/izab174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Indexed: 12/09/2022]
Abstract
BACKGROUND Osteoporosis is a common extraintestinal manifestation of inflammatory bowel disease (IBD). However, studies have been scarce, mainly because of the lack of an appropriate animal model of colitis-associated bone loss. In this study, we aimed to decipher skeletal manifestations in the Winnie mouse model of spontaneous chronic colitis, which carries a MUC2 gene mutation and closely replicates ulcerative colitis. In our study, Winnie mice, prior to the colitis onset at 6 weeks old and progression at 14 and 24 weeks old, were compared with age-matched C57BL/6 controls. We studied several possible mechanisms involved in colitis-associated bone loss. METHODS We assessed for bone quality (eg, microcomputed tomography [micro-CT], static and dynamic histomorphometry, 3-point bending, and ex vivo bone marrow analysis) and associated mechanisms (eg, electrochemical recordings for gut-derived serotonin levels, real-time polymerase chain reaction [qRT-PCR], double immunofluorescence microscopy, intestinal inflammation levels by lipocalin-2 assay, serum levels of calcium, phosphorus, and vitamin D) from Winnie (6-24 weeks) and age-matched C57BL6 mice. RESULTS Deterioration in trabecular and cortical bone microarchitecture, reductions in bone formation, mineral apposition rate, bone volume/total volume, osteoid volume/bone surface, and bone strength were observed in Winnie mice compared with controls. Decreased osteoblast and increased osteoclast numbers were prominent in Winnie mice compared with controls. Upregulation of 5-HTR1B gene and increased association of FOXO1 with ATF4 complex were identified as associated mechanisms concomitant to overt inflammation and high levels of gut-derived serotonin in 14-week and 24-week Winnie mice. CONCLUSIONS Skeletal phenotype of the Winnie mouse model of spontaneous chronic colitis closely represents manifestations of IBD-associated osteoporosis/osteopenia. The onset and progression of intestinal inflammation are associated with increased gut-derived serotonin level, increased bone resorption, and decreased bone formation.
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Affiliation(s)
- Ahmed Al Saedi
- Department of Medicine-Western Health, The University of Melbourne, Melbourne, VIC, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), Department of Medicine-Western Health, Melbourne, VIC, Australia
| | - Shilpa Sharma
- Department of Medicine-Western Health, The University of Melbourne, Melbourne, VIC, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), Department of Medicine-Western Health, Melbourne, VIC, Australia
| | - Ebrahim Bani Hassan
- Department of Medicine-Western Health, The University of Melbourne, Melbourne, VIC, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), Department of Medicine-Western Health, Melbourne, VIC, Australia
| | - Lulu Chen
- Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Ali Ghasem-Zadeh
- Australian Institute for Musculoskeletal Science (AIMSS), Department of Medicine-Western Health, Melbourne, VIC, Australia
- Departments of Medicine and Endocrinology, Austin Health, The University of Melbourne, Melbourne, VIC, Australia
| | | | - Jonathan H Gooi
- St. Vincent's Institute of Medical Research, Melbourne, VIC, Australia
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Melbourne, VIC, Australia
| | - Rhian Stavely
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
- Department of Pediatric Surgery, Pediatric Surgery Research Laboratories, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, TAS, Australia
| | - Dengshun Miao
- Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
- Calcium Research Laboratory, McGill University Health Centre and Department of Medicine, McGill University, Montreal, QC, Canada
| | - Kulmira Nurgali
- Department of Medicine-Western Health, The University of Melbourne, Melbourne, VIC, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), Department of Medicine-Western Health, Melbourne, VIC, Australia
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
| | - Gustavo Duque
- Department of Medicine-Western Health, The University of Melbourne, Melbourne, VIC, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), Department of Medicine-Western Health, Melbourne, VIC, Australia
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14
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Ahmad T, Eapen MS, Ishaq M, Park AY, Karpiniec SS, Stringer DN, Sohal SS, Fitton JH, Guven N, Caruso V, Eri R. Anti-Inflammatory Activity of Fucoidan Extracts In Vitro. Mar Drugs 2021; 19:702. [PMID: 34940701 PMCID: PMC8704339 DOI: 10.3390/md19120702] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/25/2021] [Accepted: 12/01/2021] [Indexed: 02/07/2023] Open
Abstract
Fucoidans are sulfated, complex, fucose-rich polymers found in brown seaweeds. Fucoidans have been shown to have multiple bioactivities, including anti-inflammatory effects, and are known to inhibit inflammatory processes via a number of pathways such as selectin blockade and enzyme inhibition, and have demonstrated inhibition of inflammatory pathologies in vivo. In this current investigation, fucoidan extracts from Undaria pinnatifida, Fucus vesiculosus, Macrocystis pyrifera, Ascophyllum nodosum, and Laminaria japonica were assessed for modulation of pro-inflammatory cytokine production (TNF-α, IL-1β, and IL-6) by human peripheral blood mononuclear cells (PBMCs) and in a human macrophage line (THP-1). Fucoidan extracts exhibited no signs of cytotoxicity in THP-1 cells after incubation of 48 h. Additionally, all fucoidan extracts reduced cytokine production in LPS stimulated PBMCs and human THP-1 cells in a dose-dependent fashion. Notably, the 5-30 kDa subfraction from Macrocystis pyrifera was a highly effective inhibitor at lower concentrations. Fucoidan extracts from all species had significant anti-inflammatory effects, but the lowest molecular weight subfractions had maximal effects at low concentrations. These observations on various fucoidan extracts offer insight into strategies that improve their efficacy against inflammation-related pathology. Further studies should be conducted to elucidate the mechanism of action of these extracts.
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Affiliation(s)
- Tauseef Ahmad
- School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia;
| | - Mathew Suji Eapen
- Respiratory Translational Research Group, Department of Laboratory Medicine, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7248, Australia; (M.S.E.); (S.S.S.)
| | - Muhammad Ishaq
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7005, Australia; (M.I.); (N.G.); (V.C.)
| | - Ah Young Park
- Marinova Pty Ltd., Cambridge, TAS 7170, Australia; (A.Y.P.); (S.S.K.); (D.N.S.)
| | - Samuel S. Karpiniec
- Marinova Pty Ltd., Cambridge, TAS 7170, Australia; (A.Y.P.); (S.S.K.); (D.N.S.)
| | - Damien N. Stringer
- Marinova Pty Ltd., Cambridge, TAS 7170, Australia; (A.Y.P.); (S.S.K.); (D.N.S.)
| | - Sukhwinder Singh Sohal
- Respiratory Translational Research Group, Department of Laboratory Medicine, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7248, Australia; (M.S.E.); (S.S.S.)
| | - J. Helen Fitton
- Marinova Pty Ltd., Cambridge, TAS 7170, Australia; (A.Y.P.); (S.S.K.); (D.N.S.)
- RDadvisor, Hobart, TAS 7006, Australia
| | - Nuri Guven
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7005, Australia; (M.I.); (N.G.); (V.C.)
| | - Vanni Caruso
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7005, Australia; (M.I.); (N.G.); (V.C.)
- ISAL Foundation, Research on Pain, Torre Pedrera, 204-47922 Rimini, Italy
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia;
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15
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Shastri S, Shinde T, Woolley KL, Smith JA, Gueven N, Eri R. Short-Chain Naphthoquinone Protects Against Both Acute and Spontaneous Chronic Murine Colitis by Alleviating Inflammatory Responses. Front Pharmacol 2021; 12:709973. [PMID: 34497514 PMCID: PMC8419285 DOI: 10.3389/fphar.2021.709973] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 07/19/2021] [Indexed: 12/12/2022] Open
Abstract
Ulcerative colitis (UC) is characterised by chronic, relapsing, idiopathic, and multifactorial colon inflammation. Recent evidence suggests that mitochondrial dysfunction plays a critical role in the onset and recurrence of this disease. Previous reports highlighted the potential of short-chain quinones (SCQs) for the treatment of mitochondrial dysfunction due to their reversible redox characteristics. We hypothesised that a recently described potent mitoprotective SCQ (UTA77) could ameliorate UC symptoms and pathology. In a dextran sodium sulphate- (DSS-) induced acute colitis model in C57BL/6J mice, UTA77 substantially improved DSS-induced body weight loss, disease activity index (DAI), colon length, and histopathology. UTA77 administration also significantly increased the expression of tight junction (TJ) proteins occludin and zona-occludin 1 (ZO-1), which preserved intestinal barrier integrity. Similar responses were observed in the spontaneous Winnie model of chronic colitis, where UTA77 significantly improved DAI, colon length, and histopathology. Furthermore, UTA77 potently suppressed elevated levels of proinflammatory cytokines and chemokines in colonic explants of both DSS-treated and Winnie mice. These results strongly suggest that UTA77 or its derivatives could be a promising novel therapeutic approach for the treatment of human UC.
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Affiliation(s)
- Sonia Shastri
- Gut Health Laboratory, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Tanvi Shinde
- Gut Health Laboratory, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia.,Centre for Food Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, TAS, Australia
| | - Krystel L Woolley
- School of Natural Sciences-Chemistry, College of Science and Engineering, University of Tasmania, Hobart, TAS, Australia
| | - Jason A Smith
- School of Natural Sciences-Chemistry, College of Science and Engineering, University of Tasmania, Hobart, TAS, Australia
| | - Nuri Gueven
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Rajaraman Eri
- Gut Health Laboratory, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
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De Santis S, Liso M, Vacca M, Verna G, Cavalcanti E, Coletta S, Calabrese FM, Eri R, Lippolis A, Armentano R, Mastronardi M, De Angelis M, Chieppa M. Dysbiosis Triggers ACF Development in Genetically Predisposed Subjects. Cancers (Basel) 2021; 13:cancers13020283. [PMID: 33466665 PMCID: PMC7828790 DOI: 10.3390/cancers13020283] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/07/2021] [Accepted: 01/08/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Colorectal cancer (CRC) is the third most common cancer worldwide, characterized by a multifactorial etiology including genetics, lifestyle, and environmental factors including microbiota composition. To address the role of microbial modulation in CRC, we used our recently established mouse model (the Winnie-APCMin/+) combining inflammation and genetics. METHODS Gut microbiota profiling was performed on 8-week-old Winnie-APCMin/+ mice and their littermates by 16S rDNA gene amplicon sequencing. Moreover, to study the impact of dysbiosis induced by the mother's genetics in ACF development, the large intestines of APCMin/+ mice born from wild type mice were investigated by histological analysis at 8 weeks. RESULTS ACF development in 8-week-old Winnie-APCMin/+ mice was triggered by dysbiosis. Specifically, the onset of ACF in genetically predisposed mice may result from dysbiotic signatures in the gastrointestinal tract of the breeders. Additionally, fecal transplant from Winnie donors to APCMin/+ hosts leads to an increased rate of ACF development. CONCLUSIONS The characterization of microbiota profiling supporting CRC development in genetically predisposed mice could help to design therapeutic strategies to prevent dysbiosis. The application of these strategies in mothers during pregnancy and lactation could also reduce the CRC risk in the offspring.
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Affiliation(s)
- Stefania De Santis
- Department of Pharmacy-Drug Science, University of Bari Aldo Moro, 70126 Bari, Italy;
| | - Marina Liso
- Research Department, National Institute of Gastroenterology “S. de Bellis”, Research Hospital, 70013 Castellana Grotte, Italy; (M.L.); (E.C.); (S.C.); (A.L.); (R.A.); (M.M.)
| | - Mirco Vacca
- Department of Soil, Plant and Food Sciences, University of Bari, 70126 Bari, Italy; (M.V.); (F.M.C.)
| | - Giulio Verna
- Department of Pharmacy, University of Salerno, 84084 Fisciano, Italy;
| | - Elisabetta Cavalcanti
- Research Department, National Institute of Gastroenterology “S. de Bellis”, Research Hospital, 70013 Castellana Grotte, Italy; (M.L.); (E.C.); (S.C.); (A.L.); (R.A.); (M.M.)
| | - Sergio Coletta
- Research Department, National Institute of Gastroenterology “S. de Bellis”, Research Hospital, 70013 Castellana Grotte, Italy; (M.L.); (E.C.); (S.C.); (A.L.); (R.A.); (M.M.)
| | - Francesco Maria Calabrese
- Department of Soil, Plant and Food Sciences, University of Bari, 70126 Bari, Italy; (M.V.); (F.M.C.)
| | - Rajaraman Eri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7250, Australia;
| | - Antonio Lippolis
- Research Department, National Institute of Gastroenterology “S. de Bellis”, Research Hospital, 70013 Castellana Grotte, Italy; (M.L.); (E.C.); (S.C.); (A.L.); (R.A.); (M.M.)
| | - Raffaele Armentano
- Research Department, National Institute of Gastroenterology “S. de Bellis”, Research Hospital, 70013 Castellana Grotte, Italy; (M.L.); (E.C.); (S.C.); (A.L.); (R.A.); (M.M.)
| | - Mauro Mastronardi
- Research Department, National Institute of Gastroenterology “S. de Bellis”, Research Hospital, 70013 Castellana Grotte, Italy; (M.L.); (E.C.); (S.C.); (A.L.); (R.A.); (M.M.)
| | - Maria De Angelis
- Department of Soil, Plant and Food Sciences, University of Bari, 70126 Bari, Italy; (M.V.); (F.M.C.)
- Correspondence: (M.D.A.); (M.C.); Tel.: +39-080-544-2949 (M.D.A.); +39-080-499-4628 (M.C.)
| | - Marcello Chieppa
- Research Department, National Institute of Gastroenterology “S. de Bellis”, Research Hospital, 70013 Castellana Grotte, Italy; (M.L.); (E.C.); (S.C.); (A.L.); (R.A.); (M.M.)
- Correspondence: (M.D.A.); (M.C.); Tel.: +39-080-544-2949 (M.D.A.); +39-080-499-4628 (M.C.)
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Tran D, Myers S, McGowan C, Henstridge D, Eri R, Sonda S, Caruso V. 1-Deoxysphingolipids, Early Predictors of Type 2 Diabetes, Compromise the Functionality of Skeletal Myoblasts. Front Endocrinol (Lausanne) 2021; 12:772925. [PMID: 35002962 PMCID: PMC8739520 DOI: 10.3389/fendo.2021.772925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 12/03/2021] [Indexed: 01/18/2023] Open
Abstract
Metabolic dysfunction, dysregulated differentiation, and atrophy of skeletal muscle occur as part of a cluster of abnormalities associated with the development of Type 2 diabetes mellitus (T2DM). Recent interest has turned to the attention of the role of 1-deoxysphingolipids (1-DSL), atypical class of sphingolipids which are found significantly elevated in patients diagnosed with T2DM but also in the asymptomatic population who later develop T2DM. In vitro studies demonstrated that 1-DSL have cytotoxic properties and compromise the secretion of insulin from pancreatic beta cells. However, the role of 1-DSL on the functionality of skeletal muscle cells in the pathophysiology of T2DM still remains unclear. This study aimed to investigate whether 1-DSL are cytotoxic and disrupt the cellular processes of skeletal muscle precursors (myoblasts) and differentiated cells (myotubes) by performing a battery of in vitro assays including cell viability adenosine triphosphate assay, migration assay, myoblast fusion assay, glucose uptake assay, and immunocytochemistry. Our results demonstrated that 1-DSL significantly reduced the viability of myoblasts in a concentration and time-dependent manner, and induced apoptosis as well as cellular necrosis. Importantly, myoblasts were more sensitive to the cytotoxic effects induced by 1-DSL rather than by saturated fatty acids, such as palmitate, which are critical mediators of skeletal muscle dysfunction in T2DM. Additionally, 1-DSL significantly reduced the migration ability of myoblasts and the differentiation process of myoblasts into myotubes. 1-DSL also triggered autophagy in myoblasts and significantly reduced insulin-stimulated glucose uptake in myotubes. These findings demonstrate that 1-DSL directly compromise the functionality of skeletal muscle cells and suggest that increased levels of 1-DSL observed during the development of T2DM are likely to contribute to the pathophysiology of muscle dysfunction detected in this disease.
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Affiliation(s)
- Duyen Tran
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Stephen Myers
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Courtney McGowan
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
- Sport Performance Optimization Research Team, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Darren Henstridge
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Rajaraman Eri
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Sabrina Sonda
- School of Health Science, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Vanni Caruso
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
- Institute for Research on Pain, Istituto di Formazione e Ricerca in Scienze Algologiche (ISAL) Foundation, Rimini, Italy
- *Correspondence: Vanni Caruso,
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Gueven N, Ravishankar P, Eri R, Rybalka E. Idebenone: When an antioxidant is not an antioxidant. Redox Biol 2020; 38:101812. [PMID: 33254077 PMCID: PMC7708875 DOI: 10.1016/j.redox.2020.101812] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/16/2020] [Accepted: 11/23/2020] [Indexed: 02/06/2023] Open
Abstract
Idebenone is a well described drug that was initially developed against dementia. The current literature widely portrays this molecule as a potent antioxidant and CoQ10 analogue. While numerous papers seem to support this view, a closer look indicates that the pharmacokinetics of idebenone do not support these claims. A major discrepancy between achievable tissue levels, especially in target tissues such as the brain, and doses required to show the proposed effects, significantly questions our current understanding. This review explains how this has happened and highlights the discrepancies in the current literature. More importantly, based on some recent discoveries, a new framework is presented that can explain the mode of action of this molecule and can align formerly contradictory results. Finally, this new appreciation of the molecular activities of idebenone provides a rational approach to test idebenone in novel indications that might have not been considered previously for this drug.
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Affiliation(s)
- Nuri Gueven
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia.
| | - Pranathi Ravishankar
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Rajaraman Eri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Emma Rybalka
- Victoria University, Institute for Health and Sport, Melbourne, Victoria, Australia
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Gundamaraju R, Lu W, Azimi I, Eri R, Sohal SS. Endogenous Anti-Cancer Candidates in GPCR, ER Stress, and EMT. Biomedicines 2020; 8:biomedicines8100402. [PMID: 33050301 PMCID: PMC7601667 DOI: 10.3390/biomedicines8100402] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/05/2020] [Accepted: 10/08/2020] [Indexed: 12/12/2022] Open
Abstract
The majority of cellular responses to external stimuli are mediated by receptors such as G protein-coupled receptors (GPCRs) and systems including endoplasmic reticulum stress (ER stress). Since GPCR signalling is pivotal in numerous malignancies, they are widely targeted by a number of clinical drugs. Cancer cells often negatively modulate GPCRs in order to survive, proliferate and to disseminate. Similarly, numerous branches of the unfolded protein response (UPR) act as pro-survival mediators and are involved in promoting cancer progression via mechanisms such as epithelial to mesenchymal transition (EMT). However, there are a few proteins among these groups which impede deleterious effects by orchestrating the pro-apoptotic phenomenon and paving a therapeutic pathway. The present review exposes and discusses such critical mechanisms and some of the key processes involved in carcinogenesis.
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Affiliation(s)
- Rohit Gundamaraju
- ER Stress & Mucosal Immunology Group, School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia;
- Correspondence:
| | - Wenying Lu
- Respiratory Translational Research Group, Department of Laboratory Medicine, School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia; (W.L.); (S.S.S.)
| | - Iman Azimi
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart, TAS 7001, Australia;
| | - Rajaraman Eri
- ER Stress & Mucosal Immunology Group, School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia;
| | - Sukhwinder Singh Sohal
- Respiratory Translational Research Group, Department of Laboratory Medicine, School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia; (W.L.); (S.S.S.)
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Shastri S, Shinde T, Perera AP, Gueven N, Eri R. Idebenone Protects against Spontaneous Chronic Murine Colitis by Alleviating Endoplasmic Reticulum Stress and Inflammatory Response. Biomedicines 2020; 8:biomedicines8100384. [PMID: 32998266 PMCID: PMC7601570 DOI: 10.3390/biomedicines8100384] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 09/22/2020] [Accepted: 09/24/2020] [Indexed: 12/18/2022] Open
Abstract
Endoplasmic reticulum (ER) stress in intestinal secretory goblet cells has been linked to the development of ulcerative colitis (UC). Emerging evidence suggests that the short chain quinone drug idebenone displays anti-inflammatory activity in addition to its potent antioxidant and mitochondrial electron donor properties. This study evaluated the impact of idebenone in Winnie mice, that are characterized by spontaneous chronic intestinal inflammation and ER stress caused by a missense mutation in the mucin MUC2 gene. Idebenone (200 mg/kg) was orally administered daily to 5-6 weeks old Winnie mice over a period of 21 days. Idebenone treatment substantially improved body weight gain, disease activity index (DAI), colon length and histopathology score. Immunohistochemistry revealed increased expression of MUC2 protein in goblet cells, consistent with increased MUC2 mRNA levels. Furthermore, idebenone significantly reduced the expression of the ER stress markers C/EBP homologous protein (CHOP), activating transcription factor 6 (ATF6) and X-box binding protein-1 (XBP-1) at both mRNA and protein levels. Idebenone also effectively reduced pro-inflammatory cytokine levels in colonic explants. Taken together, these results indicate that idebenone could represent a potential therapeutic approach against human UC by its strong anti-inflammatory activity and its ability to reduce markers of ER stress.
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Affiliation(s)
- Sonia Shastri
- Gut Health Laboratory, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston 7250, Tasmania, Australia; (T.S.); (A.P.P.)
- Correspondence: (S.S.); (R.E.); Tel.: +61-4-4992-4236 (S.S.); +61-3-6226-5017 (R.E.)
| | - Tanvi Shinde
- Gut Health Laboratory, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston 7250, Tasmania, Australia; (T.S.); (A.P.P.)
- Centre for Food Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Launceston 7250, Tasmania, Australia
| | - Agampodi Promoda Perera
- Gut Health Laboratory, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston 7250, Tasmania, Australia; (T.S.); (A.P.P.)
| | - Nuri Gueven
- School of Pharmacy and Pharmacology, College of Health and Medicine, University of Tasmania, Hobart 7005, Tasmania, Australia;
| | - Rajaraman Eri
- Gut Health Laboratory, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston 7250, Tasmania, Australia; (T.S.); (A.P.P.)
- Correspondence: (S.S.); (R.E.); Tel.: +61-4-4992-4236 (S.S.); +61-3-6226-5017 (R.E.)
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21
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Shinde T, Vemuri R, Shastri S, Perera AP, Gondalia SV, Beale DJ, Karpe AV, Eri R, Stanley R. Modulating the Microbiome and Immune Responses Using Whole Plant Fibre in Synbiotic Combination with Fibre-Digesting Probiotic Attenuates Chronic Colonic Inflammation in Spontaneous Colitic Mice Model of IBD. Nutrients 2020; 12:E2380. [PMID: 32784883 PMCID: PMC7468978 DOI: 10.3390/nu12082380] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/04/2020] [Accepted: 08/06/2020] [Indexed: 12/30/2022] Open
Abstract
A probiotic and prebiotic food ingredient combination was tested for synergistic functioning in modulation of the colonic microbiome and remediation of the gastrointestinal immune and inflammatory responses in a spontaneous colitic mouse model. Bacillus coagulans MTCC5856 spores with capability to metabolise complex plant polysaccharides were supplemented with complex whole-plant prebiotic sugarcane fibre (PSCF). The combined and individual efficacies were tested for their influence on the outcomes of chronic inflammation in Muc2 mutant colitic Winnie mice. The mice were fed normal chow diet supplemented with either ingredient or a combination for 21 days. Synbiotic combined supplementation ameliorated clinical symptoms and histological colonic damage scores more effectively than either B. coagulans or PSCF alone. PSCF and B. coagulans alone also induced considerable immunomodulatory effects. Synbiotic supplementation however was the most efficacious in modulating the overall immune profile compared to the unsupplemented Winnie-control. The augmented synbiotic effect could potentially be due to a combination of increased levels of fermentation products, direct immune-modulating abilities of the components, their capability to reduce colonic epithelial damage and/or modulation of the microbiota. The beneficial effects of the supplementation with a complex plant fibre and a fibre-degrading probiotic parallel the effects seen in human microbiota with high plant fibre diets.
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Affiliation(s)
- Tanvi Shinde
- Centre for Food Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, Tasmania 7250, Australia
- Gut Health Research Group, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia; (R.V.); (S.S.); (A.P.P.); (R.E.)
| | - Ravichandra Vemuri
- Gut Health Research Group, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia; (R.V.); (S.S.); (A.P.P.); (R.E.)
- Department of Pathology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Sonia Shastri
- Gut Health Research Group, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia; (R.V.); (S.S.); (A.P.P.); (R.E.)
| | - Agampodi Promoda Perera
- Gut Health Research Group, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia; (R.V.); (S.S.); (A.P.P.); (R.E.)
| | - Shakuntla V. Gondalia
- Centre for Human Psychopharmacology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia;
- Health and Biosecurity, Commonwealth Scientific and Industrial Research Organization (CSIRO), Gate 13 Kintore Avenue, South Australia 5000, Australia
| | - David J. Beale
- Land and Water, Commonwealth Scientific and Industrial Research Organization (CSIRO), Ecosciences Precinct, Dutton Park, Queensland 4102, Australia; (D.J.B.); (A.V.K.)
| | - Avinash V. Karpe
- Land and Water, Commonwealth Scientific and Industrial Research Organization (CSIRO), Ecosciences Precinct, Dutton Park, Queensland 4102, Australia; (D.J.B.); (A.V.K.)
| | - Rajaraman Eri
- Gut Health Research Group, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia; (R.V.); (S.S.); (A.P.P.); (R.E.)
| | - Roger Stanley
- Centre for Food Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, Tasmania 7250, Australia
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22
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Sahakian L, Filippone RT, Stavely R, Robinson AM, Yan XS, Abalo R, Eri R, Bornstein JC, Kelley MR, Nurgali K. Inhibition of APE1/Ref-1 Redox Signaling Alleviates Intestinal Dysfunction and Damage to Myenteric Neurons in a Mouse Model of Spontaneous Chronic Colitis. Inflamm Bowel Dis 2020; 27:388-406. [PMID: 32618996 PMCID: PMC8287929 DOI: 10.1093/ibd/izaa161] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) associates with damage to the enteric nervous system (ENS), leading to gastrointestinal (GI) dysfunction. Oxidative stress is important for the pathophysiology of inflammation-induced enteric neuropathy and GI dysfunction. Apurinic/apyrimidinic endonuclease 1/redox factor-1 (APE1/Ref-1) is a dual functioning protein that is an essential regulator of the cellular response to oxidative stress. In this study, we aimed to determine whether an APE1/Ref-1 redox domain inhibitor, APX3330, alleviates inflammation-induced oxidative stress that leads to enteric neuropathy in the Winnie murine model of spontaneous chronic colitis. METHODS Winnie mice received APX3330 or vehicle via intraperitoneal injections over 2 weeks and were compared with C57BL/6 controls. In vivo disease activity and GI transit were evaluated. Ex vivo experiments were performed to assess functional parameters of colonic motility, immune cell infiltration, and changes to the ENS. RESULTS Targeting APE1/Ref-1 redox activity with APX3330 improved disease severity, reduced immune cell infiltration, restored GI function ,and provided neuroprotective effects to the enteric nervous system. Inhibition of APE1/Ref-1 redox signaling leading to reduced mitochondrial superoxide production, oxidative DNA damage, and translocation of high mobility group box 1 protein (HMGB1) was involved in neuroprotective effects of APX3330 in enteric neurons. CONCLUSIONS This study is the first to investigate inhibition of APE1/Ref-1's redox activity via APX3330 in an animal model of chronic intestinal inflammation. Inhibition of the redox function of APE1/Ref-1 is a novel strategy that might lead to a possible application of APX3330 for the treatment of IBD.
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Affiliation(s)
- Lauren Sahakian
- Institute for Health and Sport, Victoria University; Western Centre for Health, Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia
| | - Rhiannon T Filippone
- Institute for Health and Sport, Victoria University; Western Centre for Health, Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia
| | - Rhian Stavely
- Institute for Health and Sport, Victoria University; Western Centre for Health, Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia,Department of Pediatric Surgery, Pediatric Surgery Research Laboratories, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Ainsley M Robinson
- Institute for Health and Sport, Victoria University; Western Centre for Health, Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia
| | - Xu Sean Yan
- Institute for Health and Sport, Victoria University; Western Centre for Health, Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia
| | - Raquel Abalo
- Área de Farmacología y Nutrición y Unidad Asociada al Instituto de Química Médica (IQM) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos (URJC), Alcorcón, Madrid, Spain,High Performance Research Group in Physiopathology and Pharmacology of the Digestive System at URJC, Alcorcón, Madrid, Spain
| | - Rajaraman Eri
- University of Tasmania, School of Health Sciences, Launceston, Tasmania, Australia
| | - Joel C Bornstein
- Department of Physiology, Melbourne University, Melbourne, Australia
| | - Mark R Kelley
- Indiana University Simon Comprehensive Cancer Center, Departments of Pediatrics, Biochemistry & Molecular Biology and Pharmacology & Toxicology, Program in Pediatric Molecular Oncology & Experimental Therapeutics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine Indianapolis, USA
| | - Kulmira Nurgali
- Institute for Health and Sport, Victoria University; Western Centre for Health, Research and Education, Sunshine Hospital, Melbourne, Victoria, Australia,Department of Medicine Western Health, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia,Regenerative Medicine and Stem Cells Program, Australian Institute of Musculoskeletal Science (AIMSS), Melbourne, Victoria, Australia,Address correspondence to: Kulmira Nurgali, Level 4, Research Labs, Western Centre for Health Research & Education, Sunshine Hospital, 176 Furlong Road, St Albans, 3021, VIC, Australia. E-mail:
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23
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Shinde T, Hansbro PM, Sohal SS, Dingle P, Eri R, Stanley R. Microbiota Modulating Nutritional Approaches to Countering the Effects of Viral Respiratory Infections Including SARS-CoV-2 through Promoting Metabolic and Immune Fitness with Probiotics and Plant Bioactives. Microorganisms 2020; 8:E921. [PMID: 32570850 PMCID: PMC7355654 DOI: 10.3390/microorganisms8060921] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/16/2020] [Accepted: 06/16/2020] [Indexed: 12/12/2022] Open
Abstract
Viral respiratory infections (VRIs) can spread quickly and cause enormous morbidity and mortality worldwide. These events pose serious threats to public health due to time lags in developing vaccines to activate the acquired immune system. The high variability of people's symptomatic responses to viral infections, as illustrated in the current COVID-19 pandemic, indicates the potential to moderate the severity of morbidity from VRIs. Growing evidence supports roles for probiotic bacteria (PB) and prebiotic dietary fiber (DF) and other plant nutritional bioactives in modulating immune functions. While human studies help to understand the epidemiology and immunopathology of VRIs, the chaotic nature of viral transmissions makes it difficult to undertake mechanistic study where the pre-conditioning of the metabolic and immune system could be beneficial. However, recent experimental studies have significantly enhanced our understanding of how PB and DF, along with plant bioactives, can significantly modulate innate and acquired immunity responses to VRIs. Synbiotic combinations of PB and DF potentiate increased benefits primarily through augmenting the production of short-chain fatty acids (SCFAs) such as butyrate. These and specific plant polyphenolics help to regulate immune responses to both restrain VRIs and temper the neutrophil response that can lead to acute respiratory distress syndrome (ARDS). This review highlights the current understanding of the potential impact of targeted nutritional strategies in setting a balanced immune tone for viral clearance and reinforcing homeostasis. This knowledge may guide the development of public health tactics and the application of functional foods with PB and DF components as a nutritional approach to support countering VRI morbidity.
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Affiliation(s)
- Tanvi Shinde
- Centre for Food Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, TAS 7250, Australia
- Gut Health Research Group, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7250, Australia;
| | - Philip M Hansbro
- Centre for Inflammation, Centenary Institute, Sydney, NSW 2050, and University of Technology Sydney, Faculty of Science, Ultimo, NSW 2007, Australia;
| | - Sukhwinder Singh Sohal
- Respiratory Translational Research Group, Department of Laboratory Medicine, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7248, Australia;
| | - Peter Dingle
- Dingle Wellness, South Fremantle, WA 6162, Australia;
| | - Rajaraman Eri
- Gut Health Research Group, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7250, Australia;
| | - Roger Stanley
- Centre for Food Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, TAS 7250, Australia
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Clarke LJ, Jones PJ, Ammitzboll H, Barmuta LA, Breed MF, Chariton A, Charleston M, Dakwa V, Dewi F, Eri R, Fountain-Jones NM, Freeman J, Kendal D, McDougal R, Raes EJ, Sow SLS, Staples T, Sutcliffe B, Vemuri R, Weyrich LS, Flies EJ. Mainstreaming Microbes across Biomes. Bioscience 2020. [DOI: 10.1093/biosci/biaa057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Abstract
Bacteria, fungi, and other microorganisms in the environment (i.e., environmental microbiomes) provide vital ecosystem services and affect human health. Despite their importance, public awareness of environmental microbiomes has lagged behind that of human microbiomes. A key problem has been a scarcity of research demonstrating the microbial connections across environmental biomes (e.g., marine, soil) and between environmental and human microbiomes. We show in the present article, through analyses of almost 10,000 microbiome papers and three global data sets, that there are significant taxonomic similarities in microbial communities across biomes, but very little cross-biome research exists. This disconnect may be hindering advances in microbiome knowledge and translation. In this article, we highlight current and potential applications of environmental microbiome research and the benefits of an interdisciplinary, cross-biome approach. Microbiome scientists need to engage with each other, government, industry, and the public to ensure that research and applications proceed ethically, maximizing the potential benefits to society.
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Affiliation(s)
- Laurence J Clarke
- Institute for Marine and Antarctic Studies, and LJC is also affiliated with the Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, in Hobart, Australia
| | - Penelope J Jones
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
| | - Hans Ammitzboll
- School of Natural Sciences, University of Tasmania, Hobart, Australia
- ARC Training Centre for Forest Value, University of Tasmania, Hobart, Australia
| | - Leon A Barmuta
- School of Natural Sciences, University of Tasmania, Hobart, Australia
| | - Martin F Breed
- College of Scienceand Engineering, Flinders University, Adelaide, Australia, and with the Healthy Urban Microbiome Initiative (www.HUMIglobal.org) in the United Kingdom
| | - Anthony Chariton
- Department of Biological Sciences, Macquarie University, Sydney, Australia
| | | | - Vongai Dakwa
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, Australia
| | - Fera Dewi
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, Australia
| | - Rajaraman Eri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Australia
| | | | - Jules Freeman
- Scion, part of the New Zealand Forest Research Institute Ltd., Rotorua, New Zealand
| | - Dave Kendal
- Research Centre for Marine and Fisheries Product Processing and Biotechnology, Ministry of Marine Affairs and Fisheries, Jakarta, Indonesia
- School of Technology, Environments, and Design, University of Tasmania, Hobart, Australia
| | - Rebecca McDougal
- Scion, part of the New Zealand Forest Research Institute Ltd., Rotorua, New Zealand
| | - Eric J Raes
- Oceans and Atmosphere, Commonwealth Scientific and Industrial Research Organisation, Hobart, Australia
| | - Swan Li San Sow
- Institute for Marine and Antarctic Studies, and LJC is also affiliated with the Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, in Hobart, Australia
- Oceans and Atmosphere, Commonwealth Scientific and Industrial Research Organisation, Hobart, Australia
| | - Timothy Staples
- Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Australia, and with the School of Biological Sciences, University of Queensland, Brisbane, Australia. RV is also affiliated with the Department of Comparative Medicine, in the School of Medicine, at Wake Forest Baptist Medical Center, in Winston-Salem, North Carolina
| | - Brodie Sutcliffe
- Department of Biological Sciences, Macquarie University, Sydney, Australia
| | - Ravichandra Vemuri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Australia
| | - Laura S Weyrich
- School of Biological Sciences, University of Adelaide, Adelaide, Australia, and with the Department of Anthropology at The Pennsylvania State University, in University Park, Pennsylvania
| | - Emily J Flies
- School of Natural Sciences, University of Tasmania, Hobart, Australia
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25
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Liso M, De Santis S, Verna G, Dicarlo M, Calasso M, Santino A, Gigante I, Eri R, Raveenthiraraj S, Sobolewski A, Palmitessa V, Lippolis A, Mastronardi M, Armentano R, Serino G, De Angelis M, Chieppa M. A Specific Mutation in Muc2 Determines Early Dysbiosis in Colitis-Prone Winnie Mice. Inflamm Bowel Dis 2020; 26:546-556. [PMID: 31748792 PMCID: PMC7054774 DOI: 10.1093/ibd/izz279] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Inflammatory bowel disease (IBD), including Crohn disease (CD) and ulcerative colitis (UC), is a multifactorial disorder characterized by chronic inflammation and altered gut barrier function. Dysbiosis, a condition defined by dysregulation of the gut microbiome, has been reported in patients with IBD and in experimental models of colitis. Although several factors have been implicated in directly affecting gut microbial composition, the genetic determinants impacting intestinal dysbiosis in IBD remain relatively unknown. METHODS We compared the microbiome of normal, uninflamed wild-type (WT) mice with that of a murine model of UC (ie, Winnie strain). Winnie mice possess a missense mutation in Muc2 that manifests in altered mucus production as early as 4 weeks of age, with ensuing colonic inflammation. To better address the potential role of mutant Muc2 in promoting dysbiosis in Winnie mice, we evaluated homozygous mutant mice (Winnie-/-) with their WT littermates that, after weaning from common mothers, were caged separately according to genotype. Histologic and inflammatory status were assessed over time, along with changes in their respective microbiome compositions. RESULTS Dysbiosis in Winnie mice was already established at 4 weeks of age, before histologic evidence of gut inflammatory changes, in which microbial communities diverged from that derived from their mothers. Furthermore, dysbiosis persisted until 12 weeks of age, with peak differences in microbiome composition observed between Winnie and WT mice at 8 weeks of age. The relative abundance of Bacteroidetes was greater in Winnie compared with WT mice. Verrucomicrobia was detected at the highest relative levels in 4-week-old Winnie mice; in particular, Akkermansia muciniphila was among the most abundant species found at 4 weeks of age. CONCLUSIONS Our results demonstrate that mutant genetic determinants involved in the complex regulation of intestinal homeostasis, such as that observed in Winnie mice, are able to promote early gut dysbiosis that is independent from maternal microbial transfer, including breastfeeding. Our data provide evidence for intestinal dysbiosis attributed to a Muc2-driven mucus defect that leads to colonic inflammation and may represent an important target for the design of future interventional studies.
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Affiliation(s)
- Marina Liso
- National Institute of Gastroenterology “S. de Bellis,” Institute of Research, Castellana Grotte (BA), Italy
| | - Stefania De Santis
- Department of Pharmacy, School of Pharmacy, University of Salerno, Fisciano (SA), Italy
| | - Giulio Verna
- National Institute of Gastroenterology “S. de Bellis,” Institute of Research, Castellana Grotte (BA), Italy
| | - Manuela Dicarlo
- National Institute of Gastroenterology “S. de Bellis,” Institute of Research, Castellana Grotte (BA), Italy
| | - Maria Calasso
- Department of Soil, Plant and Food Sciences, University of Bari, Bari, Italy
| | - Angelo Santino
- Institute of Sciences of Food Production C.N.R., Unit of Lecce, Lecce, Italy
| | - Isabella Gigante
- National Institute of Gastroenterology “S. de Bellis,” Institute of Research, Castellana Grotte (BA), Italy
| | - Rajaraman Eri
- Mucosal Biology, School of Health Sciences, University of Tasmania, Launceston, TAS, Australia
| | | | - Anastasia Sobolewski
- School of Pharmacy University of East Anglia, Norwich Research Park, Norwich, UK
| | - Valeria Palmitessa
- National Institute of Gastroenterology “S. de Bellis,” Institute of Research, Castellana Grotte (BA), Italy
| | - Antonio Lippolis
- National Institute of Gastroenterology “S. de Bellis,” Institute of Research, Castellana Grotte (BA), Italy
| | - Mauro Mastronardi
- National Institute of Gastroenterology “S. de Bellis,” Institute of Research, Castellana Grotte (BA), Italy
| | - Raffaele Armentano
- National Institute of Gastroenterology “S. de Bellis,” Institute of Research, Castellana Grotte (BA), Italy
| | - Grazia Serino
- National Institute of Gastroenterology “S. de Bellis,” Institute of Research, Castellana Grotte (BA), Italy
| | - Maria De Angelis
- Department of Soil, Plant and Food Sciences, University of Bari, Bari, Italy
| | - Marcello Chieppa
- National Institute of Gastroenterology “S. de Bellis,” Institute of Research, Castellana Grotte (BA), Italy,Department of Immunology and Cell Biology, European Biomedical ResearchInstitute of Salerno (EBRIS), Salerno, Italy,Address correspondence to: Marcello Chieppa, PhD, National Institute of Gastroenterology “S. de Bellis,” Institute of Research, Castellana Grotte (BA), Italy ()
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Yong YK, Tan HY, Saeidi A, Wong WF, Vignesh R, Velu V, Eri R, Larsson M, Shankar EM. Immune Biomarkers for Diagnosis and Treatment Monitoring of Tuberculosis: Current Developments and Future Prospects. Front Microbiol 2019; 10:2789. [PMID: 31921004 PMCID: PMC6930807 DOI: 10.3389/fmicb.2019.02789] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 11/18/2019] [Indexed: 12/22/2022] Open
Abstract
Tuberculosis (TB) treatment monitoring is paramount to clinical decision-making and the host biomarkers appears to play a significant role. The currently available diagnostic technology for TB detection is inadequate. Although GeneXpert detects total DNA present in the sample regardless live or dead bacilli present in clinical samples, all the commercial tests available thus far have low sensitivity. Humoral responses against Mycobacterium tuberculosis (Mtb) antigens are generally low, which precludes the use of serological tests for TB diagnosis, prognosis, and treatment monitoring. Mtb-specific CD4+ T cells correlate with Mtb antigen/bacilli burden and hence might serve as good biomarkers for monitoring treatment progress. Omics-based techniques are capable of providing a more holistic picture for disease mechanisms and are more accurate in predicting TB disease outcomes. The current review aims to discuss some of the recent advances on TB biomarkers, particularly host biomarkers that have the potential to diagnose and differentiate active TB and LTBI as well as their use in disease prognosis and treatment monitoring.
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Affiliation(s)
- Yean K Yong
- Laboratory Center, Xiamen University Malaysia, Sepang, Malaysia
| | - Hong Y Tan
- Laboratory Center, Xiamen University Malaysia, Sepang, Malaysia.,Department of Traditional Chinese Medicine, Xiamen University Malaysia, Sepang, Malaysia
| | - Alireza Saeidi
- Department of Pediatrics, Emory Vaccine Center, Atlanta, GA, United States
| | - Won F Wong
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Vijayakumar Velu
- Department of Microbiology and Immunology, Emory Vaccine Center, Atlanta, GA, United States
| | - Rajaraman Eri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS, Australia
| | - Marie Larsson
- Division of Molecular Virology, Department of Clinical and Experimental Medicine, Linkoping University, Linkoping, Sweden
| | - Esaki M Shankar
- Division of Infection Biology and Medical Microbiology, Department of Life Sciences, Central University of Tamil Nadu (CUTN), Thiruvarur, India
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Flies EJ, Mavoa S, Zosky GR, Mantzioris E, Williams C, Eri R, Brook BW, Buettel JC. Urban-associated diseases: Candidate diseases, environmental risk factors, and a path forward. Environ Int 2019; 133:105187. [PMID: 31648161 DOI: 10.1016/j.envint.2019.105187] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/13/2019] [Accepted: 09/13/2019] [Indexed: 05/24/2023]
Abstract
BACKGROUND Cities are home to over half the global population; that proportion is expected to rise to 70% by mid-century. The urban environment differs greatly from that in which humans evolved, with potentially important consequences for health. Rates for allergic, inflammatory and auto-immune diseases appear to rise with urbanization and be higher in the more urbanized nations of the world which has led some to suggest that cities promote the occurrence of these diseases. However, there are no syntheses outlining what urban-associated diseases are and what characteristics of cities promote their occurrence. OBJECTIVES To synthesize the current understanding of "urban-associated diseases", and discover the common, potentially modifiable features of cities that may be driving these associations. METHODS We focus on any diseases that have been associated with cities or are particularly prominent in today's urban societies. We draw on expertise across diverse health fields to examine the evidence for urban connections and drivers. DISCUSSION We found evidence for urban associations across allergic, auto-immune, inflammatory, lifestyle and infectious disease categories. Some conditions (e.g. obesity and diabetes) have complex relationships with cities that have been insufficiently explored. Other conditions (e.g. allergies and asthma) have more evidence demonstrating their relationship with cities and the mechanisms driving that association. Unsurprisingly, air pollution was the characteristic of cities most frequently associated with disease. Other identified urban risk factors are not as widely known: altered microbial exposure and a disconnect from environmental microbiomes, vitamin D deficiency, noise and light pollution, and a transient, over-crowded, impoverished population. However, many complexities and caveats to these relationships beg clarification; we highlight the current knowledge gaps and outline ways to fill those gaps. Identifying urban-associated diseases and their drivers will allow us to prepare for the urban-disease burden of the future and create healthy cities that mitigate that disease burden.
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Affiliation(s)
- Emily J Flies
- School of Natural Sciences, College of Science and Engineering, University of Tasmania, Hobart, Australia.
| | - Suzanne Mavoa
- Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Australia
| | - Graeme R Zosky
- Menzies Institute for Medical Research, College of Health and Medicine, University of Tasmania, Hobart, Australia; School of Medicine, College of Health and Medicine, University of Tasmania, Hobart, Australia
| | - Evangeline Mantzioris
- School of Pharmacy and Medical Sciences & Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, Adelaide, Australia
| | - Craig Williams
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - Rajaraman Eri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Hobart, Australia
| | - Barry W Brook
- School of Natural Sciences, College of Science and Engineering, University of Tasmania, Hobart, Australia
| | - Jessie C Buettel
- School of Natural Sciences, College of Science and Engineering, University of Tasmania, Hobart, Australia
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28
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Gundamaraju R, Vemuri R, Chong WC, Geraghty DP, Eri R. Cell Stress Signaling Cascades Regulating Cell Fate. Curr Pharm Des 2019; 24:3176-3183. [PMID: 29992877 DOI: 10.2174/1381612824666180711122753] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 06/21/2018] [Accepted: 07/06/2018] [Indexed: 11/22/2022]
Abstract
Initiating anti-apoptotic signaling or triggering cell death depends to a great extent on the nature or source of cellular stress and cell type. Interplay between each stress response eventually determines the fate of stressed cell. Numerous factors induce cell death by a number of pathways including apoptosis, autophagy and necrosis. Not surprisingly, some of the pathways are interrelated to each other through a mediator that could articulate the entire mechanism. The present review attempts to consolidate all the pathways included in intrinsic cellular stress such as oxidative stress and autophagy, endoplasmic reticular stress (ERS) and mitophagy and apoptosis as fate in cell stress. These stress responses are a hallmark of numerous diseases including neurodegenerative diseases, diabetes and cancer. Understanding the cross-talk between different intrinsic cell stress responses will help to develop new therapeutic targets and hence lead to the development of new therapeutics.
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Affiliation(s)
- Rohit Gundamaraju
- Intestinal Mucosal Biology Laboratory, School of Health Sciences, University of Tasmania, Tasmania, Australia
| | - Ravichandra Vemuri
- Intestinal Mucosal Biology Laboratory, School of Health Sciences, University of Tasmania, Tasmania, Australia
| | - Wai Chin Chong
- Intestinal Mucosal Biology Laboratory, School of Health Sciences, University of Tasmania, Tasmania, Australia
| | - Dominic P Geraghty
- Intestinal Mucosal Biology Laboratory, School of Health Sciences, University of Tasmania, Tasmania, Australia
| | - Rajaraman Eri
- Intestinal Mucosal Biology Laboratory, School of Health Sciences, University of Tasmania, Tasmania, Australia
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29
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Shukla SD, Shastri MD, Chong WC, Dua K, Budden KF, Mahmood MQ, Hansbro NG, Keely S, Eri R, Patel RP, Peterson GM, Hansbro PM. Microbiome-focused asthma management strategies. Curr Opin Pharmacol 2019; 46:143-149. [PMID: 31357048 DOI: 10.1016/j.coph.2019.06.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 06/24/2019] [Accepted: 06/24/2019] [Indexed: 12/11/2022]
Abstract
Asthma is a common, heterogeneous and serious disease with high prevalence globally. Poorly controlled, steroid-resistant asthma is particularly important as there are no effective therapies and it exerts substantial healthcare and societal burden. The role of microbiomes, particularly in chronic diseases has generated considerable interest in recent times. Existing evidence clearly demonstrates an association between asthma initiation and the microbiome, both respiratory and gastro-intestinal, although its' roles are poorly understood when assessing the asthma progression or heterogeneity (i.e. phenotypes/endotypes) across different geographical locations. Moreover, modulating microbiomes could be preventive and/or therapeutic in patients with asthma warrants urgent attention. Here, we review recent advances in assessing the role of microbiomes in asthma and present the challenges associated with the potential therapeutic utility of modifying microbiomes in management.
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Affiliation(s)
- Shakti D Shukla
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Hunter Medical Research Institute & University of Newcastle, Callaghan, NSW, Australia
| | - Madhur D Shastri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Australia
| | - Wai Chin Chong
- Department of Molecular and Translational Science, Monash University, Clayton, Australia; Centre for Cancer Research, Hudson Institute of Medical Research, Clayton, Australia
| | - Kamal Dua
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Hunter Medical Research Institute & University of Newcastle, Callaghan, NSW, Australia; Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, NSW, Australia
| | - Kurtis F Budden
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Hunter Medical Research Institute & University of Newcastle, Callaghan, NSW, Australia
| | - Malik Quasir Mahmood
- Medicine, College of Health and Medicine, University of Tasmania, Hobart, Australia
| | - Nicole G Hansbro
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Hunter Medical Research Institute & University of Newcastle, Callaghan, NSW, Australia; Centre for inflammation, Centenary Institute, Sydney, and School of Life Sciences, University of Technology, Ultimo, NSW, Australia
| | - Simon Keely
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Hunter Medical Research Institute & University of Newcastle, Callaghan, NSW, Australia
| | - Rajaraman Eri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Australia
| | - Rahul P Patel
- Pharmacy, College of Health and Medicine, University of Tasmania, Hobart, Australia
| | - Gregory M Peterson
- Pharmacy, College of Health and Medicine, University of Tasmania, Hobart, Australia
| | - Philip M Hansbro
- Priority Research Centre for Healthy Lungs, School of Biomedical Sciences and Pharmacy, Hunter Medical Research Institute & University of Newcastle, Callaghan, NSW, Australia; Centre for inflammation, Centenary Institute, Sydney, and School of Life Sciences, University of Technology, Ultimo, NSW, Australia.
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30
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Vemuri R, Gundamaraju R, Shinde T, Perera AP, Basheer W, Southam B, Gondalia SV, Karpe AV, Beale DJ, Tristram S, Ahuja KDK, Ball M, Martoni CJ, Eri R. Lactobacillus acidophilus DDS-1 Modulates Intestinal-Specific Microbiota, Short-Chain Fatty Acid and Immunological Profiles in Aging Mice. Nutrients 2019; 11:E1297. [PMID: 31181695 PMCID: PMC6627711 DOI: 10.3390/nu11061297] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/04/2019] [Accepted: 06/05/2019] [Indexed: 02/07/2023] Open
Abstract
Distribution of the microbiota varies according to the location in the gastrointestinal (GI) tract. Thus, dysbiosis during aging may not be limited to faecal microbiota and extend to the other parts of the GI tract, especially the cecum and colon. Lactobacillus acidophilus DDS-1, a probiotic strain, has been shown to modulate faecal microbiota and its associated metabolic phenotype in aging mice. In the present study, we investigated the effect of L. acidophilus DDS-1 supplementation on caecal- and mucosal-associated microbiota, short-chain fatty acids (SCFAs) and immunological profiles in young and aging C57BL/6J mice. Besides differences in the young and aging control groups, we observed microbial shifts in caecal and mucosal samples, leading to an alteration in SCFA levels and immune response. DDS-1 treatment increased the abundances of beneficial bacteria such as Akkermansia spp. and Lactobacillus spp. more effectively in caecal samples than in mucosal samples. DDS-1 also enhanced the levels of butyrate, while downregulating the production of inflammatory cytokines (IL-6, IL-1β, IL-1α, MCP-1, MIP-1α, MIP-1β, IL-12 and IFN-γ) in serum and colonic explants. Our findings suggest distinct patterns of intestinal microbiota, improvements in SCFA and immunological profiles with DDS-1 supplementation in aging mice.
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Affiliation(s)
- Ravichandra Vemuri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania, 7250 Australia.
| | - Rohit Gundamaraju
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania, 7250 Australia.
| | - Tanvi Shinde
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania, 7250 Australia.
- Centre for Food Safety and Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, Tasmania, 7250 Australia.
| | - Agampodi Promoda Perera
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania, 7250 Australia.
| | - Waheedha Basheer
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania, 7250 Australia.
| | - Benjamin Southam
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania, 7250 Australia.
| | - Shakuntla V Gondalia
- Centre for Human Psychopharmacology, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia.
| | - Avinash V Karpe
- Land and Water, Commonwealth Scientific and Industrial Research Organization (CSIRO), Ecosciences Precinct, Dutton Park, Queensland, 4102, Australia.
| | - David J Beale
- Land and Water, Commonwealth Scientific and Industrial Research Organization (CSIRO), Ecosciences Precinct, Dutton Park, Queensland, 4102, Australia.
| | - Stephen Tristram
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania, 7250 Australia.
| | - Kiran D K Ahuja
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania, 7250 Australia.
| | - Madeleine Ball
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, 3082 Australia.
| | | | - Rajaraman Eri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania, 7250 Australia.
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31
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Shinde T, Perera AP, Vemuri R, Gondalia SV, Karpe AV, Beale DJ, Shastri S, Southam B, Eri R, Stanley R. Synbiotic Supplementation Containing Whole Plant Sugar Cane Fibre and Probiotic Spores Potentiates Protective Synergistic Effects in Mouse Model of IBD. Nutrients 2019; 11:E818. [PMID: 30979002 PMCID: PMC6521199 DOI: 10.3390/nu11040818] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 04/09/2019] [Accepted: 04/10/2019] [Indexed: 12/20/2022] Open
Abstract
Inflammatory bowel diseases (IBD) are a chronic inflammatory disorders with increasing global incidence. Synbiotic, which is a two-point approach carrying probiotic and prebiotic components in mitigating inflammation in IBD, is thought to be a pragmatic approach owing to the synergistic outcomes. In this study, the impacts of dietary supplementation with probiotic Bacillus coagulans MTCC5856 spores (B. coagulans) and prebiotic whole plant sugar cane fibre (PSCF) was assessed using a murine model of IBD. Eight-week-old C57BL/6 mice were fed a normal chow diet supplemented with either B. coagulans, PSCF or its synbiotic combination. After seven days of supplementation, colitis was induced with dextran sulfate sodium (DSS) in drinking water for seven days during the continuation of the supplemented diets. Synbiotic supplementation ameliorated disease activity index and histological score (-72%, 7.38, respectively), more effectively than either B. coagulans (-47%, 10.1) and PSCF (-53%, 13.0) alone. Synbiotic supplementation also significantly (p < 0.0001) prevented the expression of tight junction proteins and modulated the altered serum IL-1β (-40%), IL-10 (+26%), and C-reactive protein (CRP) (-39%) levels. Synbiotic supplementations also raised the short-chain fatty acids (SCFA) profile more extensively compared to the unsupplemented DSS-control. The synbiotic health outcome effect of the probiotic and prebiotic combinations may be associated with a synergistic direct immune-regulating efficacy of the components, their ability to protect epithelial integrity, stimulation of probiotic spores by the prebiotic fibre, and/or with stimulation of greater levels of fermentation of fibres releasing SCFAs that mediate the reduction in colonic inflammation. Our model findings suggest synbiotic supplementation should be tested in clinical trials.
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Affiliation(s)
- Tanvi Shinde
- Centre for Food Safety and Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, TAS 7250, Australia.
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7250, Australia.
| | - Agampodi Promoda Perera
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7250, Australia.
| | - Ravichandra Vemuri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7250, Australia.
| | - Shakuntla V Gondalia
- Centre for Human Psychopharmacology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
| | - Avinash V Karpe
- Land and Water, Commonwealth Scientific and Industrial Research Organization (CSIRO), Ecosciences Precinct, Dutton Park, QLD 4102, Australia.
| | - David J Beale
- Land and Water, Commonwealth Scientific and Industrial Research Organization (CSIRO), Ecosciences Precinct, Dutton Park, QLD 4102, Australia.
| | - Sonia Shastri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7250, Australia.
| | - Benjamin Southam
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7250, Australia.
| | - Rajaraman Eri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7250, Australia.
| | - Roger Stanley
- Centre for Food Safety and Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, TAS 7250, Australia.
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Gundamaraju R, Vemuri R, Chong WC, Bulmer AC, Eri R. Bilirubin Attenuates ER Stress-Mediated Inflammation, Escalates Apoptosis and Reduces Proliferation in the LS174T Colonic Epithelial Cell Line. Int J Med Sci 2019; 16:135-144. [PMID: 30662337 PMCID: PMC6332492 DOI: 10.7150/ijms.29134] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 11/29/2018] [Indexed: 12/21/2022] Open
Abstract
Mildly elevated serum unconjugated bilirubin (UCB) concentrations are associated with protection against disease conditions underpinned by cellular and metabolic stress. To determine the potential therapeutic efficacy of UCB we tested it in an in vitro model of gut inflammation. Tunicamycin TUN (10 µg/mL) was used to induce endoplasmic reticular stress (ERS) affecting N-glycosylation in LS174T cells. Cultured cells were investigated with addition of UCB at doses 0.1, 1 and 10µM (resulting in bilirubin:albumin ratios of 0.325-0.003)against ER stress-mediated effects including inflammation, cell survival (determined by apoptosis) and proliferation. Gene expression of ER stress markers (Grp78, Perk, XBP1 and ATF6) were evaluated in addition to cytokine concentrations in media after six hours of treatment. We then verified the potential role of UCB in executing programmed cell death via PARP, Caspase3 and Annexin V assays and further explored cell proliferation using the Click-iT EdU assay. A dose of 10µM UCB most potently reduced tunicamycin-mediated effects on enhanced UPR markers, inflammatory cytokines and proliferation; however all the doses (i.e.0.1-10µM) reduced the expression of ER stress and inflammatory markers Grp78, NLRP3, IL1-b, XBP1, PERK and ATF6. Furthermore, media concentrations of pro-inflammatory cytokines IL-8, IL-4 and TNFα decreased and the anti-inflammatory cytokine IL-10 increased (P<0.05). A dose of 10µM UCB initiated intrinsic apoptosis via Caspase 3 and in addition reduced cellular proliferation. Collectively, these data indicate that co treatment with UCB resulted in reducing ER stress response to TUN in gastrointestinal epithelial cells, reduced the subsequent inflammatory response, induced cancer cell death and decreased cellular proliferation. These data suggest that mildly elevated circulating or enteric UCB might protect against gastrointestinal inflammatory disorders.
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Affiliation(s)
- Rohit Gundamaraju
- School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
| | - Ravichandra Vemuri
- School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
| | - Wai Chin Chong
- School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
| | - Andrew Cameron Bulmer
- School of Medical Science and Menzies Health Institute Queensland, Griffith University, Gold Coast, Qld, Australia
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
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33
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Ranson N, Veldhuis M, Mitchell B, Fanning S, Cook AL, Kunde D, Eri R. NLRP3-Dependent and -Independent Processing of Interleukin (IL)-1β in Active Ulcerative Colitis. Int J Mol Sci 2018; 20:ijms20010057. [PMID: 30583612 PMCID: PMC6337576 DOI: 10.3390/ijms20010057] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/11/2018] [Accepted: 12/18/2018] [Indexed: 02/06/2023] Open
Abstract
A contributing factor in the development of ulcerative colitis (UC) and Crohn’s disease (CD) is the disruption of innate and adaptive signaling pathways due to aberrant cytokine production. The cytokine, interleukin (IL)-1β, is highly inflammatory and its production is tightly regulated through transcriptional control and both inflammasome-dependent and inflammasome- independent proteolytic cleavage. In this study, qRT-PCR, immunohistochemistry, immunofluorescence confocal microscopy were used to (1) assess the mRNA expression of NLRP3, IL-1β, CASP1 and ASC in paired biopsies from UC and CD patient, and (2) the colonic localization and spatial relationship of NLRP3 and IL-1β in active and quiescent disease. NLRP3 and IL-1β were found to be upregulated in active UC and CD. During active disease, IL-1β was localized to the infiltrate of lamina propria immune cells, which contrasts with the near-exclusive epithelial cell layer expression during non-inflammatory conditions. In active disease, NLRP3 was consistently expressed within the neutrophils and other immune cells of the lamina propria and absent from the epithelial cell layer. The disparity in spatial localization of IL-1β and NLRP3, observed only in active UC, which is characterized by a neutrophil-dominated lamina propria cell population, implies inflammasome-independent processing of IL-1β. Consistent with other acute inflammatory conditions, these results suggest that blocking both caspase-1 and neutrophil-derived serine proteases may provide an additional therapeutic option for treating active UC.
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Affiliation(s)
- Nicole Ranson
- School of Health Sciences, University of Tasmania, Launceston, Tasmania 7250, Australia.
| | - Mark Veldhuis
- Launceston General Hospital, Launceston, Tasmania 7250, Australia.
| | - Brent Mitchell
- Launceston General Hospital, Launceston, Tasmania 7250, Australia.
| | - Scott Fanning
- Launceston General Hospital, Launceston, Tasmania 7250, Australia.
| | - Anthony L Cook
- Wicking Dementia Research and Education Centre, Faculty of Health, University of Tasmania, Hobart, Tasmania 7000, Australia.
| | - Dale Kunde
- School of Health Sciences, University of Tasmania, Launceston, Tasmania 7250, Australia.
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, Tasmania 7250, Australia.
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Ranasinghe R, Eri R. Modulation of the CCR6-CCL20 Axis: A Potential Therapeutic Target in Inflammation and Cancer. ACTA ACUST UNITED AC 2018; 54:medicina54050088. [PMID: 30453514 PMCID: PMC6262638 DOI: 10.3390/medicina54050088] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 11/01/2018] [Accepted: 11/13/2018] [Indexed: 12/23/2022]
Abstract
Prototypical functions of the chemokine receptor CCR6 include immune regulation by maneuvering cell chemotaxis and selective delimiting of the pro-inflammatory TH17 and regulatory Treg subsets during chronic or acute systemic inflammation. Inhibition of CCR6 is proposed to attenuate disease symptoms and promote recuperation of multiple inflammatory and autoimmune disorders. Prescription medicines with pharmacodynamics involving the inhibition of the chemokine axis CCR6–CCL20 are very limited. The development of such therapeutics is still at an early experimental stage and has mostly involved the utilization of pre-clinical models and neutralizing mono or polyclonal antibodies against either partner (CCR6 or CCL20). Other methods include the constitutive use of small molecules as peptide inhibitors or small interfering ribonucleic acid (siRNA) to interfere with transcription at the nuclear level. In our review, we aim to introduce the wide array of potential CCR6–CCL20 inhibitors with an emphasis on attendant immune-modulator capacity that have been tested in the research field to date and are immensely promising compounds as forerunners of future curatives. Sixteen different tractable inhibitors of the CCR6–CCL20 duo have been identified as possessing high medicinal potential by drug developers worldwide to treat autoimmune and inflammatory diseases as shown in Figure 1. A multitude of antibody preparations are already available in the current pharmaceutical market as patented treatments for diseases in which the CCR6–CCL20 axis is operative, yet they must be used only as supplements with existing routinely prescribed medication as they collectively produce adverse side effects. Novel inhibitors are needed to evaluate this invaluable therapeutic target which holds much promise in the research and development of complaisant remedies for inflammatory diseases.
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Affiliation(s)
- Ranmali Ranasinghe
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7248, Australia.
| | - Rajaraman Eri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7248, Australia.
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35
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Vemuri R, Shinde T, Gundamaraju R, Gondalia SV, Karpe AV, Beale DJ, Martoni CJ, Eri R. Lactobacillus acidophilus DDS-1 Modulates the Gut Microbiota and Improves Metabolic Profiles in Aging Mice. Nutrients 2018; 10:E1255. [PMID: 30200669 PMCID: PMC6165029 DOI: 10.3390/nu10091255] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/03/2018] [Accepted: 09/05/2018] [Indexed: 12/13/2022] Open
Abstract
Recent evidence suggests that gut microbiota shifts can alter host metabolism even during healthy aging. Lactobacillus acidophilus DDS-1, a probiotic strain, has shown promising probiotic character in vitro, as well as in clinical studies. The present study was carried out to investigate whether DDS-1 can modulate the host metabolic phenotype under the condition of age-affected gut microbial shifts in young and aging C57BL/6J mice. Collected fecal samples were analyzed using 16S rRNA gene sequencing for identifying gut microbiota and untargeted gas chromatography-mass spectrometry (GC-MS) metabolomics analysis. Gut microbial shifts were observed in the control groups (young and aging), leading to an alteration in metabolism. Principal coordinate analysis (PCoA) of microbiota indicated distinct separation in both the DDS-1-treated groups. L. acidophilus DDS-1 increased the relative abundances of beneficial bacteria, such as Akkermansia muciniphila and Lactobacillus spp., and reduced the relative levels of opportunistic bacteria such as Proteobacteria spp. Metabolic pathway analysis identified 10 key pathways involving amino acid metabolism, protein synthesis and metabolism, carbohydrate metabolism, and butanoate metabolism. These findings suggest that modulation of gut microbiota by DDS-1 results in improvement of metabolic phenotype in the aging mice.
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Affiliation(s)
- Ravichandra Vemuri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia.
| | - Tanvi Shinde
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia.
- Centre for Food Safety and Innovation, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, Tasmania 7250, Australia.
| | - Rohit Gundamaraju
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia.
| | - Shakuntla V Gondalia
- Centre for Human Psychopharmacology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia.
| | - Avinash V Karpe
- CSIRO Land and Water, Ecosciences Precinct, Dutton Park 4102, Queensland 2601, Australia.
| | - David J Beale
- CSIRO Land and Water, Ecosciences Precinct, Dutton Park 4102, Queensland 2601, Australia.
| | | | - Rajaraman Eri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia.
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Ranasinghe R, Eri R. Pleiotropic Immune Functions of Chemokine Receptor 6 in Health and Disease. Medicines (Basel) 2018; 5:medicines5030069. [PMID: 30004409 PMCID: PMC6164274 DOI: 10.3390/medicines5030069] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 01/12/2023]
Abstract
C-C chemoattractant cytokine (chemokine) receptor 6 (CCR6) and its exclusive binding molecule CCL20 is an extremely important chemokine receptor-ligand pair which controls cell migration and immune induction during inflammatory disease. Not many scientific studies have been undertaken to study its immune mechanisms in detail, but its unique contribution to steady state cell chemotaxis in upholding immune tolerance and regulating immune homeostasis during inflammation is evident in multiple systems in the human body, including skin, liver, lung, kidney, brain, eye, joints, gonads and the gut. The role of CCR6 is constitutively expressed as a series of much debilitating severe inflammatory and autoimmune diseases, Human Immunodeficiency Virus (HIV) and cancer metastasis. CD4+ T cells, the central organizers of adaptive immunity, are stringently mobilized by the CCR6/CCL20 axis also induced by cytokines and a host of other factors in a carefully executed immune modulation scenario, to bring about a delicate balance between inflammation inducing TH17 cells and regulatory Treg cells. Although the exact immune regulatory role is not elucidated as yet, the CCR6/CCL20 axis is implicated as a front runner which determines the polarization of TH17 and regulatory Treg cells, upon which depends the resolution or progression of many debilitating disorders. This review therefore aims at emphasizing the pleiotropic significance of the chemokines CCR6 and CCL20 in immunologic function in multiple organ systems, thereby hoping to accentuate its value in future therapeutic modalities.
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Affiliation(s)
- Ranmali Ranasinghe
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia.
| | - Rajaraman Eri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250, Australia.
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Perera AP, Fernando R, Shinde T, Gundamaraju R, Southam B, Sohal SS, Robertson AAB, Schroder K, Kunde D, Eri R. MCC950, a specific small molecule inhibitor of NLRP3 inflammasome attenuates colonic inflammation in spontaneous colitis mice. Sci Rep 2018; 8:8618. [PMID: 29872077 PMCID: PMC5988655 DOI: 10.1038/s41598-018-26775-w] [Citation(s) in RCA: 194] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 03/01/2018] [Indexed: 12/28/2022] Open
Abstract
MCC950 a potent, highly specific small molecule inhibitor of canonical and noncanonical activation of NLRP3 inflammasome has been evaluated in a multitude of NLRP3 driven inflammatory diseases. However, the effect of MCC950 on colonic inflammation has not yet been reported. In the present study we investigated the effect of MCC950 in a spontaneous chronic colitis mouse model Winnie, which mimics human ulcerative colitis. Oral administration of 40 mg/kg MCC950 commencing at Winnie week seven for three weeks significantly improved body weight gain, colon length, colon weight to body weight ratio, disease activity index and histopathological scores. MCC950 significantly suppressed release of proinflammatory cytokines IL-1β, IL-18, IL1-α, IFNγ, TNF-α, IL6, IL17, chemokine MIP1a and Nitric Oxide in colonic explants. Moreover, MCC950 resulted in a significant decrease of IL-1β release and activation of caspase-1 in colonic explants and macrophage cells isolated from Winnie. Complete inhibition with MCC950 in Winnie colonic explants shows, for the first time, the contribution of inflammatory effects resulting exclusively from canonical and noncanonical NLRP3 inflammasome activation in colitis. Taken together, our results illustrate the efficacy of MCC950 in the treatment of murine ulcerative colitis and provides avenue for a potential novel therapeutic agent for human inflammatory bowel diseases.
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Affiliation(s)
| | - Ruchira Fernando
- Department of Pathology, Launceston General Hospital, Launceston, TAS, Australia
| | - Tanvi Shinde
- School of Health Sciences, University of Tasmania, Launceston, TAS, Australia
| | - Rohit Gundamaraju
- School of Health Sciences, University of Tasmania, Launceston, TAS, Australia
| | - Benjamin Southam
- School of Health Sciences, University of Tasmania, Launceston, TAS, Australia
| | | | - Avril A B Robertson
- Institute for Molecular Bioscience, University of Queensland, St Lucia, QLD, Australia
| | - Kate Schroder
- Institute for Molecular Bioscience, University of Queensland, St Lucia, QLD, Australia
| | - Dale Kunde
- School of Health Sciences, University of Tasmania, Launceston, TAS, Australia
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, TAS, Australia.
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Abstract
BACKGROUND IBD is considered as one of the major public health concerns worldwide. The pathophysiology and gut microbial alteration during inflammatory bowel disease (IBD) are still not completely understood. Gut microbiota is implicated in most of the gastro-intestinal (GI) diseases including IBD. From the time of gut microbiota establishment and through aging, it undergoes a lot of changes in the composition. METHODS In a healthy state, the composition of beneficial microbes in the gut is comparatively higher and due to factors such as malnutrition, use of antibiotics and any underlying diseases allow the colonization and invasion of pathogens. RESULTS A careful manipulation of gut microbiota during disease conditions such as IBD is required. Probiotics are natural, safe and useful interventions for GI diseases. CONCLUSION Lactic acid probiotic bacteria have shown many beneficial effects in various gastrointestinal and inflammatory disorders. This review focuses on the use of probiotics in IBD and possible mechanism of probiotics in inflammation conditions.
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Affiliation(s)
- Ravichandra Vemuri
- School of Health Sciences, University of Tasmania, Launceston, Tasmania 7250, Australia
| | - Rohit Gundamaraju
- School of Health Sciences, University of Tasmania, Launceston, Tasmania 7250, Australia
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, Tasmania 7250, Australia
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Perera AP, Kunde D, Eri R. NLRP3 Inhibitors as Potential Therapeutic Agents for Treatment of Inflammatory Bowel Disease. Curr Pharm Des 2018; 23:2321-2327. [PMID: 28155620 DOI: 10.2174/1381612823666170201162414] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 01/30/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) is a group of intestinal disorders characterised by chronic relapsing inflammation of the small intestine and colon. IBD manifests as either ulcerative colitis or Crohn's disease and increases the risk of developing colorectal cancer. METHODS Here, we have reviewed current treatment regimen for IBD utilising anti-inflammatory drugs, immune system suppressors and antibiotics or a combination of these. However, these therapeutics lead to a number of adverse effects, remission or significant non-responsiveness creating an urgent need to develop potent drugs with novel mechanisms of action for IBD. RESULTS The inflammasome is a multiprotein complex that assembles to a key innate immune system signalling platform and is involved in the pathogenesis of inflammatory and autoimmune diseases. A number of investigations show that the NLRP3 inflammasome recognizes microbial and cell stress components and serve as a platform for caspase-1 activation and pro-inflammatory cytokine IL-1β, IL18 maturation. Although the exact aetiology of IBD is unknown, uncontrolled NLRP3 Inflammasome activation has shown to play a major role in the chronic intestinal inflammation and mature IL-1β and IL18 are consistently associated with increased colitis and colitis associated colorectal cancer development. CONCLUSION In this review, we discuss the experimental NLRP3 inhibitors that have been investigated in IBD experimental models. The potential mechanism of action of these inhibitors such as inhibiting NF-κB activation and decreasing mitochondrial reactive oxygen species are discussed in detail. We further expand the controversial role of NLRP3 in IBD and future issues that might arise from the long term use of NLRP3 inhibitors in IBD therapy.
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Affiliation(s)
- Agampodi Promoda Perera
- School of Health Sciences, University of Tasmania, Launceston, Launceston TAS 7250, Australia
| | - Dale Kunde
- School of Health Sciences, University of Tasmania, Launceston, Launceston TAS 7250, Australia
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, Launceston TAS 7250, Australia
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Ranson N, Veldhuis M, Mitchell B, Fanning S, Cook AL, Kunde D, Eri R. Nod-Like Receptor Pyrin-Containing Protein 6 (NLRP6) Is Up-regulated in Ileal Crohn's Disease and Differentially Expressed in Goblet Cells. Cell Mol Gastroenterol Hepatol 2018; 6:110-112.e8. [PMID: 29928676 PMCID: PMC6007817 DOI: 10.1016/j.jcmgh.2018.03.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 03/05/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Nicole Ranson
- School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
| | - Mark Veldhuis
- Launceston General Hospital, Launceston, Tasmania, Australia,St Vincent’s Hospital, Calvary Health Care, Launceston, Tasmania, Australia
| | - Brent Mitchell
- Launceston General Hospital, Launceston, Tasmania, Australia,St Vincent’s Hospital, Calvary Health Care, Launceston, Tasmania, Australia
| | - Scott Fanning
- Launceston General Hospital, Launceston, Tasmania, Australia,St Vincent’s Hospital, Calvary Health Care, Launceston, Tasmania, Australia
| | - Anthony L. Cook
- Wicking Dementia Research and Education Centre, Faculty of Health, University of Tasmania, Launceston, Tasmania, Australia
| | - Dale Kunde
- School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia,Corresponding author:
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41
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Ashworth Briggs EL, Toh T, Eri R, Hewitt AW, Cook AL. Uteroglobin and FLRG concentrations in aqueous humor are associated with age in primary open angle glaucoma patients. BMC Ophthalmol 2018; 18:57. [PMID: 29482497 PMCID: PMC5828060 DOI: 10.1186/s12886-018-0723-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 02/19/2018] [Indexed: 11/22/2022] Open
Abstract
Background The pathophysiological changes occurring in the trabecular meshwork in primary open angle glaucoma are poorly understood, but are thought to include increased extracellular matrix deposition, trabecular meshwork cell apoptosis, inflammation, trabecular meshwork calcification and altered protein composition of the aqueous humor. Although many proteins are present in aqueous humor, relatively few have been studied extensively, and their potential roles in primary open angle glaucoma are unknown. Methods Analyte concentrations in aqueous humor from 19 primary open angle glaucoma and 18 cataract patients were measured using a multiplex immunoassay. Fisher’s exact test was used to assess statistical significance between groups, and correlations of analyte concentrations with age, intraocular pressure, pattern standard deviation, mean deviation, cup-to-disc ratio and disease duration since commencing treatment were tested by Spearman’s method. Results CHI3L1, FLRG, HGF, MIF, P-selectin and Uteroglobin were detected in more than 50% of samples of one or both patient groups, some of which have not previously been quantified in aqueous humor. In the glaucoma but not the cataract group, significant correlations were determined with age for Uteroglobin/SCGB1A1 (rs = 0.805, p < 0.0001) and FLRG (rs = 0.706, p = 0.0007). Furthermore, HGF correlated significantly with disease duration (rs = − 0.723, p = 0.0007). There were no differences in analyte concentrations between groups, and no other significant associations with clinical descriptors that passed correction for multiple testing. Conclusions The correlations of uteroglobin and FLRG with age in primary open angle glaucoma but not cataract may suggest a heightened requirement for anti-inflammatory (uteroglobin) or anti-calcification (FLRG) activity in the ageing glaucomatous trabecular meshwork. Electronic supplementary material The online version of this article (10.1186/s12886-018-0723-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | - Tze'Yo Toh
- Launceston Eye Institute and Launceston Eye Doctors, Launceston, Australia
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, Australia
| | - Alex W Hewitt
- School of Health Sciences, University of Tasmania, Launceston, Australia.,Centre for Eye Research Australia, University of Melbourne, Melbourne, Australia
| | - Anthony L Cook
- School of Health Sciences, University of Tasmania, Launceston, Australia. .,Wicking Dementia Research and Education Centre, University of Tasmania, Hobart, 7001, Australia.
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42
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Vemuri R, Shinde T, Shastri MD, Perera AP, Tristram S, Martoni CJ, Gundamaraju R, Ahuja KDK, Ball M, Eri R. A human origin strain Lactobacillus acidophilus DDS-1 exhibits superior in vitro probiotic efficacy in comparison to plant or dairy origin probiotics. Int J Med Sci 2018; 15:840-848. [PMID: 30008595 PMCID: PMC6036100 DOI: 10.7150/ijms.25004] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 04/13/2018] [Indexed: 12/21/2022] Open
Abstract
Background: The health benefits of probiotics are well established and known to be strain-specific. However, the role of probiotics obtained from different origins and their efficacy largely remains unexplored. The aim of this study is to investigate the in vitro efficacy of probiotics from different origins. Methods: Probiotic strains utilized in this study include Lactobacillus acidophilus DDS-1 (human origin), Bifidobacterium animalis ssp. lactis UABla-12 (human origin), L. plantarum UALp-05 (plant origin) and Streptococcus thermophilus UASt-09 (dairy origin). Screening assays such as in vitro digestion simulation, adhesion, cell viability and cytokine release were used to evaluate the probiotic potential. Results: All strains showed good resistance in the digestion simulation process, especially DDS-1 and UALp-05, which survived up to a range of 107 to 108 CFU/mL from an initial concentration of 109 CFU/mL. Two human colonic mucus-secreting cells, HT-29 and LS174T, were used to assess the adhesion capacity, cytotoxicity/viability, and cytokine quantification. All strains exhibited good adhesion capacity. No significant cellular cytotoxicity or loss in cell viability was observed. DDS-1 and UALp-05 significantly upregulated anti-inflammatory IL-10 and downregulated pro-inflammatory TNF-α cytokine production. All the strains were able to downregulate IL-8 cytokine levels. Conclusion: Of the 4 strains tested, DDS-1 demonstrated superior survival rates, good adhesion capacity and strong immunomodulatory effect under different experimental conditions.
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Affiliation(s)
- Ravichandra Vemuri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250 Australia
| | - Tanvi Shinde
- School of Land and Food, University of Tasmania, Launceston, Tasmania 7250 Australia
| | - Madhur D Shastri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250 Australia
| | - Agampodi Promoda Perera
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250 Australia
| | - Stephen Tristram
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250 Australia
| | | | - Rohit Gundamaraju
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250 Australia
| | - Kiran D K Ahuja
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250 Australia
| | - Madeleine Ball
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, 3082 Australia
| | - Rajaraman Eri
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7250 Australia
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43
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Ranson N, Kunde D, Eri R. Regulation and Sensing of Inflammasomes and Their Impact on Intestinal Health. Int J Mol Sci 2017; 18:ijms18112379. [PMID: 29120406 PMCID: PMC5713348 DOI: 10.3390/ijms18112379] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 11/02/2017] [Accepted: 11/06/2017] [Indexed: 12/20/2022] Open
Abstract
Pattern recognition receptors such as nucleotide-binding oligomerization domain (NOD)-containing protein receptors (NLRs) and the pyrin and hematopoitic interferon-inducible nuclear protein (HIN) domain (PYHIN) receptors initiate the inflammatory response following cell stress or pathogenic challenge. When activated, some of these receptors oligomerize to form the structural backbone of a signalling platform known as an inflammasome. Inflammasomes promote the activation of caspase-1 and the maturation of the proinflammatory cytokines, interleukin (IL)-1β and IL-18. The gut dysregulation of the inflammasome complex is thought to be a contributing factor in the development of inflammatory bowel diseases (IBD), such as ulcerative colitis (UC) and Crohn's disease (CD). The importance of inflammasomes to intestinal health has been emphasized by various inflammasome-deficient mice in dextran sulphate sodium (DSS) models of intestinal inflammation and by the identification of novel potential candidate genes in population-based human studies. In this review, we summarise the most recent findings with regard to the formation, sensing, and regulation of the inflammasome complex and highlight their importance in maintaining intestinal health.
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Affiliation(s)
- Nicole Ranson
- School of Health Sciences, University of Tasmania, Launceston, Tasmania 7250, Australia.
| | - Dale Kunde
- School of Health Sciences, University of Tasmania, Launceston, Tasmania 7250, Australia.
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, Tasmania 7250, Australia.
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44
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De Santis S, Kunde D, Galleggiante V, Liso M, Scandiffio L, Serino G, Pinto A, Campiglia P, Sorrentino R, Cavalcanti E, Santino A, Caruso ML, Eri R, Chieppa M. TNFα deficiency results in increased IL-1β in an early onset of spontaneous murine colitis. Cell Death Dis 2017; 8:e2993. [PMID: 28796256 PMCID: PMC5596580 DOI: 10.1038/cddis.2017.397] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/04/2017] [Accepted: 07/11/2017] [Indexed: 12/17/2022]
Abstract
Inflammatory bowel disease (Crohn's disease (CD) and ulcerative colitis (UC)) is a multifactorial disease resulting from immune dysregulation in the gut. The underlying colitis is characterized by high levels of inflammatory cytokines, including TNFα. Biological intervention for IBD patients using anti-TNFα antibodies is often an effective therapeutic solution. However, TNFα neutralization fails to induce remission in a subgroup of IBD patients, primarily in UC patients. There is a dearth of suitable animal models representing TNFα non-responders. Here we have combined one of the best UC models currently available, namely Winnie and the TNFαKO mouse to generate a TNFα-deficient Winnie to study early onset colitis. The induced TNFα deficiency with underlying colitis does not influence general health (viability and body weight) or clinical parameters (colon weight, colon length and histological colitis) when compared with the Winnie genotype alone. The molecular characterization resulted in identification of Il1β as the major elevated cytokine during early phases of colitis. Further, in vitro functional assay using bone marrow-derived dendritic cells confirmed IL-1β as the major cytokine released in the absence of TNFα. This study has generated a successful model of colitis that remains TNFα non-responsive and has demonstrated that IL-1β expression is a major pathway for the progression of colitis in this system. These data also suggest that IL-1β can be a potential target for clinical intervention of UC patients who fail to respond to TNFα neutralization.
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Affiliation(s)
- S De Santis
- National Institute of Gastroenterology 'S. de Bellis', Research Hospital, Castellana Grotte, Bari 70013, Italy
- Institute of Sciences of Food Production C.N.R., Unit of Lecce, via Monteroni, Lecce 73100, Italy
| | - D Kunde
- Mucosal Biology, School of Health Sciences, University of Tasmania, Launceston, TAS, Australia
| | - V Galleggiante
- National Institute of Gastroenterology 'S. de Bellis', Research Hospital, Castellana Grotte, Bari 70013, Italy
| | - M Liso
- National Institute of Gastroenterology 'S. de Bellis', Research Hospital, Castellana Grotte, Bari 70013, Italy
| | - L Scandiffio
- National Institute of Gastroenterology 'S. de Bellis', Research Hospital, Castellana Grotte, Bari 70013, Italy
| | - G Serino
- National Institute of Gastroenterology 'S. de Bellis', Research Hospital, Castellana Grotte, Bari 70013, Italy
| | - A Pinto
- Department of Pharmacy, Faculty of Pharmacy and Medicine, University of Salerno, Fisciano (SA), Italy
| | - P Campiglia
- Department of Pharmacy, Faculty of Pharmacy and Medicine, University of Salerno, Fisciano (SA), Italy
| | - R Sorrentino
- Department of Pharmacy, Faculty of Pharmacy and Medicine, University of Salerno, Fisciano (SA), Italy
| | - E Cavalcanti
- National Institute of Gastroenterology 'S. de Bellis', Research Hospital, Castellana Grotte, Bari 70013, Italy
| | - A Santino
- Institute of Sciences of Food Production C.N.R., Unit of Lecce, via Monteroni, Lecce 73100, Italy
| | - M L Caruso
- National Institute of Gastroenterology 'S. de Bellis', Research Hospital, Castellana Grotte, Bari 70013, Italy
| | - R Eri
- Mucosal Biology, School of Health Sciences, University of Tasmania, Launceston, TAS, Australia
| | - M Chieppa
- National Institute of Gastroenterology 'S. de Bellis', Research Hospital, Castellana Grotte, Bari 70013, Italy
- Department of Pharmacy, Faculty of Pharmacy and Medicine, University of Salerno, Fisciano (SA), Italy
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45
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Cheluvappa R, Scowen P, Eri R. Ethics of animal research in human disease remediation, its institutional teaching; and alternatives to animal experimentation. Pharmacol Res Perspect 2017; 5. [PMID: 28805976 PMCID: PMC5684868 DOI: 10.1002/prp2.332] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Accepted: 05/23/2017] [Indexed: 11/09/2022] Open
Abstract
Animals have been used in research and teaching for a long time. However, clear ethical guidelines and pertinent legislation were instated only in the past few decades, even in developed countries with Judeo-Christian ethical roots. We compactly cover the basics of animal research ethics, ethical reviewing and compliance guidelines for animal experimentation across the developed world, "our" fundamentals of institutional animal research ethics teaching, and emerging alternatives to animal research. This treatise was meticulously constructed for scientists interested/involved in animal research. Herein, we discuss key animal ethics principles - Replacement/Reduction/Refinement. Despite similar undergirding principles across developed countries, ethical reviewing and compliance guidelines for animal experimentation vary. The chronology and evolution of mandatory institutional ethical reviewing of animal experimentation (in its pioneering nations) are summarised. This is followed by a concise rendition of the fundamentals of teaching animal research ethics in institutions. With the advent of newer methodologies in human cell-culturing, novel/emerging methods aim to minimise, if not avoid the usage of animals in experimentation. Relevant to this, we discuss key extant/emerging alternatives to animal use in research; including organs on chips, human-derived three-dimensional tissue models, human blood derivates, microdosing, and computer modelling of various hues.
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Affiliation(s)
- Rajkumar Cheluvappa
- Department of Medicine, St. George Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Paul Scowen
- Department of Animal Services, University of Tasmania, Hobart, Tasmania, Australia
| | - Rajaraman Eri
- Mucosal Biology Laboratory, School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
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46
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Gundamaraju R, Vemuri R, Eri R, Ishiki HM, Coy-Barrera E, Yarla NS, Dos Santos SG, Alves MF, Barbosa Filho JM, Diniz MFFM, Scotti MT, Scotti L. Metabolomics as a Functional Tool in Screening Gastro Intestinal Diseases: Where are we in High Throughput Screening? Comb Chem High Throughput Screen 2017; 20:247-254. [PMID: 28000563 DOI: 10.2174/1386207319666161220122903] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 10/07/2016] [Accepted: 11/17/2016] [Indexed: 11/22/2022]
Abstract
Identifying novel bio markers in gastro intestinal disease is a promising method where a comprehensive analysis of the metabolome is performed. Metabolomics has evolved enormously in the past decade, paving a path in gastro intestinal disease research, especially diseases which lead to high morbidity and mortality. Metabolomics involves identifying metabolites such as anti-oxidants, and amino acids etc., which are screened in the urine, feces and tissue samples. Certain cases employ advanced tools like GC-MS, 1HNMR and GC-MS/SPME which reveal valuable information concerning disease severity and differentiation. In light of escalating health care costs and risky invasive procedures, metabolomics can be chosen as a safe yet precise method for screening diseases like ulcerative colitis, Crohns' disease, celiac disease, and gastro intestinal cancers. The present review focuses on major advancements in gastro intestinal metabolomics, giving attention to which parameters are assessed, and to recent changes in metabolite analysis.
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Affiliation(s)
- Rohit Gundamaraju
- Intestinal Mucosal Biology Laboratory, School of Health Sciences , University of Tasmania, Launceston, Launceston TAS 7250, Australia
| | - Ravichandra Vemuri
- Intestinal Mucosal Biology Laboratory, School of Health Sciences , University of Tasmania, Launceston, Launceston TAS 7250, Australia
| | - Rajaraman Eri
- Intestinal Mucosal Biology Laboratory, School of Health Sciences , University of Tasmania, Launceston, Launceston TAS 7250, Australia
| | - Hamilton M Ishiki
- University of Western São Paulo (Unoeste), PresidentePrudente, SP, Brazil
| | - Ericsson Coy-Barrera
- UM Nueva Granada, Department of Chemistry, Nueva Granada Campus, Cajica, Colombia
| | | | | | | | | | | | - Marcus T Scotti
- Federal University of Paraiba, Campus I 58051-970, Joao Pessoa, PB, Brazil
| | - Luciana Scotti
- Federal University of Paraiba, Campus I 58051-970, Joao Pessoa, PB, Brazil
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Affiliation(s)
- Rajaraman Eri
- School of Health Sciences University of Tasmania Launceston, Tasmania, 7248, Australia
| | - Ravichandra Vemuri
- School of Health Sciences University of Tasmania Launceston, Tasmania, 7248, Australia
| | - Rohit Gundamaraju
- School of Health Sciences University of Tasmania Launceston, Tasmania, 7248, Australia
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Chong WC, Shastri MD, Eri R. Endoplasmic Reticulum Stress and Oxidative Stress: A Vicious Nexus Implicated in Bowel Disease Pathophysiology. Int J Mol Sci 2017; 18:E771. [PMID: 28379196 PMCID: PMC5412355 DOI: 10.3390/ijms18040771] [Citation(s) in RCA: 173] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 03/30/2017] [Indexed: 02/07/2023] Open
Abstract
The endoplasmic reticulum (ER) is a complex protein folding and trafficking organelle. Alteration and discrepancy in the endoplasmic reticulum environment can affect the protein folding process and hence, can result in the production of misfolded proteins. The accumulation of misfolded proteins causes cellular damage and elicits endoplasmic reticulum stress. Under such stress conditions, cells exhibit reduced functional synthesis, and will undergo apoptosis if the stress is prolonged. To resolve the ER stress, cells trigger an intrinsic mechanism called an unfolded protein response (UPR). UPR is an adaptive signaling process that triggers multiple pathways through the endoplasmic reticulum transmembrane transducers, to reduce and remove misfolded proteins and improve the protein folding mechanism, in order to improve and maintain endoplasmic reticulum homeostasis. An increasing number of studies support the view that oxidative stress has a strong connection with ER stress. During the protein folding process, reactive oxygen species are produced as by-products, leading to impaired reduction-oxidation (redox) balance conferring oxidative stress. As the protein folding process is dependent on redox homeostasis, the oxidative stress can disrupt the protein folding mechanism and enhance the production of misfolded proteins, causing further ER stress. It is proposed that endoplasmic reticulum stress and oxidative stress together play significant roles in the pathophysiology of bowel diseases.
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Affiliation(s)
- Wai Chin Chong
- School of Health Science, University of Tasmania, Newnham TAS 7248, Australia.
| | - Madhur D Shastri
- School of Health Science, University of Tasmania, Newnham TAS 7248, Australia.
| | - Rajaraman Eri
- School of Health Science, University of Tasmania, Newnham TAS 7248, Australia.
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Shastri S, Vemuri R, Gueven N, D. Shastri M, Eri R. Molecular mechanisms of intestinal inflammation leading to colorectal cancer. AIMS Biophysics 2017. [DOI: 10.3934/biophy.2017.1.152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Robinson AM, Rahman AA, Carbone SE, Randall-Demllo S, Filippone R, Bornstein JC, Eri R, Nurgali K. Alterations of colonic function in the Winnie mouse model of spontaneous chronic colitis. Am J Physiol Gastrointest Liver Physiol 2017; 312:G85-G102. [PMID: 27881401 DOI: 10.1152/ajpgi.00210.2016] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 11/14/2016] [Accepted: 11/14/2016] [Indexed: 01/31/2023]
Abstract
UNLABELLED The Winnie mouse, carrying a missense mutation in Muc2, is a model for chronic intestinal inflammation demonstrating symptoms closely resembling inflammatory bowel disease (IBD). Alterations to the immune environment, morphological structure, and innervation of Winnie mouse colon have been identified; however, analyses of intestinal transit and colonic functions have not been conducted. In this study, we investigated in vivo intestinal transit in radiographic studies and in vitro motility of the isolated colon in organ bath experiments. We compared neuromuscular transmission using conventional intracellular recording between distal colon of Winnie and C57BL/6 mice and smooth muscle contractions using force displacement transducers. Chronic inflammation in Winnie mice was confirmed by detection of lipocalin-2 in fecal samples over 4 wk and gross morphological damage to the colon. Colonic transit was faster in Winnie mice. Motility was altered including decreased frequency and increased speed of colonic migrating motor complexes and increased occurrence of short and fragmented contractions. The mechanisms underlying colon dysfunctions in Winnie mice included inhibition of excitatory and fast inhibitory junction potentials, diminished smooth muscle responses to cholinergic and nitrergic stimulation, and increased number of α-smooth muscle actin-immunoreactive cells. We conclude that diminished excitatory responses occur both prejunctionally and postjunctionally and reduced inhibitory purinergic responses are potentially a prejunctional event, while diminished nitrergic inhibitory responses are probably due to a postjunction mechanism in the Winnie mouse colon. Many of these changes are similar to disturbed motor functions in IBD patients indicating that the Winnie mouse is a model highly representative of human IBD. NEW & NOTEWORTHY This is the first study to provide analyses of intestinal transit and whole colon motility in an animal model of spontaneous chronic colitis. We found that cholinergic and purinergic neuromuscular transmission, as well as the smooth muscle cell responses to cholinergic and nitrergic stimulation, is altered in the chronically inflamed Winnie mouse colon. The changes to intestinal transit and colonic function we identified in the Winnie mouse are similar to those seen in inflammatory bowel disease patients.
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Affiliation(s)
- Ainsley M Robinson
- College of Health and Biomedicine, Victoria University, Melbourne, Victoria, Australia
| | - Ahmed A Rahman
- College of Health and Biomedicine, Victoria University, Melbourne, Victoria, Australia
| | - Simona E Carbone
- College of Health and Biomedicine, Victoria University, Melbourne, Victoria, Australia
| | - Sarron Randall-Demllo
- University of Tasmania, School of Health Sciences, Launceston, Tasmania, Australia; and
| | - Rhiannon Filippone
- College of Health and Biomedicine, Victoria University, Melbourne, Victoria, Australia
| | - Joel C Bornstein
- Department of Physiology, Melbourne University, Melbourne, Victoria, Australia
| | - Rajaraman Eri
- University of Tasmania, School of Health Sciences, Launceston, Tasmania, Australia; and
| | - Kulmira Nurgali
- College of Health and Biomedicine, Victoria University, Melbourne, Victoria, Australia;
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