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Ibrahim Z, Khan NA, Siddiqui R, Qaisar R, Marzook H, Soares NC, Elmoselhi AB. Gut matters in microgravity: potential link of gut microbiota and its metabolites to cardiovascular and musculoskeletal well-being. Nutr Metab (Lond) 2024; 21:66. [PMID: 39123239 PMCID: PMC11316329 DOI: 10.1186/s12986-024-00836-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 07/27/2024] [Indexed: 08/12/2024] Open
Abstract
The gut microbiota and its secreted metabolites play a significant role in cardiovascular and musculoskeletal health and diseases. The dysregulation of the intestinal microbiota poses a significant threat to cardiovascular and skeletal muscle well-being. Nonetheless, the precise molecular mechanisms underlying these changes remain unclear. Furthermore, microgravity presents several challenges to cardiovascular and musculoskeletal health compromising muscle strength, endothelial dysfunction, and metabolic changes. The purpose of this review is to critically examine the role of gut microbiota metabolites on cardiovascular and skeletal muscle functions and dysfunctions. It also explores the molecular mechanisms that drive microgravity-induced deconditioning in both cardiovascular and skeletal muscle. Key findings in this review highlight that several alterations in gut microbiota and secreted metabolites in microgravity mirror characteristics seen in cardiovascular and skeletal muscle diseases. Those alterations include increased levels of Firmicutes/Bacteroidetes (F/B) ratio, elevated lipopolysaccharide levels (LPS), increased in para-cresol (p-cresol) and secondary metabolites, along with reduction in bile acids and Akkermansia muciniphila bacteria. Highlighting the potential, modulating gut microbiota in microgravity conditions could play a significant role in mitigating cardiovascular and skeletal muscle diseases not only during space flight but also in prolonged bed rest scenarios here on Earth.
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Affiliation(s)
- Zeinab Ibrahim
- Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah, 27272, UAE
- Basic Medical Sciences Department, College of Medicine, University of Sharjah, Sharjah, 27272, United Arab Emirates
| | - Naveed A Khan
- Microbiota Research Center, Istinye University, Istanbul, 34010, Turkey
| | - Ruqaiyyah Siddiqui
- Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University, Edinburgh, EH14 4AS,, UK
- Microbiota Research Center, Istinye University, Istanbul, 34010, Turkey
| | - Rizwan Qaisar
- Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah, 27272, UAE
- Basic Medical Sciences Department, College of Medicine, University of Sharjah, Sharjah, 27272, United Arab Emirates
| | - Hezlin Marzook
- Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah, 27272, UAE
| | - Nelson C Soares
- Center for Applied and Translational Genomics (CATG), Mohammed Bin Rashid university of Medicine and Health Sciences, Dubai, 0000, United Arab Emirates
- Laboratory of Proteomics, Department of Human Genetics, National Institute of Health Doutor Ricardo Jorge (INSA), Av Padre Cruz, Lisbon, 1649-016, Portugal
| | - Adel B Elmoselhi
- Research Institute of Medical & Health Sciences, University of Sharjah, Sharjah, 27272, UAE.
- Basic Medical Sciences Department, College of Medicine, University of Sharjah, Sharjah, 27272, United Arab Emirates.
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2
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Fleishman JS, Kumar S. Bile acid metabolism and signaling in health and disease: molecular mechanisms and therapeutic targets. Signal Transduct Target Ther 2024; 9:97. [PMID: 38664391 PMCID: PMC11045871 DOI: 10.1038/s41392-024-01811-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 03/06/2024] [Accepted: 03/17/2024] [Indexed: 04/28/2024] Open
Abstract
Bile acids, once considered mere dietary surfactants, now emerge as critical modulators of macronutrient (lipid, carbohydrate, protein) metabolism and the systemic pro-inflammatory/anti-inflammatory balance. Bile acid metabolism and signaling pathways play a crucial role in protecting against, or if aberrant, inducing cardiometabolic, inflammatory, and neoplastic conditions, strongly influencing health and disease. No curative treatment exists for any bile acid influenced disease, while the most promising and well-developed bile acid therapeutic was recently rejected by the FDA. Here, we provide a bottom-up approach on bile acids, mechanistically explaining their biochemistry, physiology, and pharmacology at canonical and non-canonical receptors. Using this mechanistic model of bile acids, we explain how abnormal bile acid physiology drives disease pathogenesis, emphasizing how ceramide synthesis may serve as a unifying pathogenic feature for cardiometabolic diseases. We provide an in-depth summary on pre-existing bile acid receptor modulators, explain their shortcomings, and propose solutions for how they may be remedied. Lastly, we rationalize novel targets for further translational drug discovery and provide future perspectives. Rather than dismissing bile acid therapeutics due to recent setbacks, we believe that there is immense clinical potential and a high likelihood for the future success of bile acid therapeutics.
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Affiliation(s)
- Joshua S Fleishman
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY, USA
| | - Sunil Kumar
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY, USA.
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3
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Staudinger JL, Mahroke A, Patel G, Dattel C, Reddy S. Pregnane X Receptor Signaling Pathway and Vitamin K: Molecular Mechanisms and Clinical Relevance in Human Health. Cells 2024; 13:681. [PMID: 38667296 PMCID: PMC11049418 DOI: 10.3390/cells13080681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
This review explores the likely clinical impact of Pregnane X Receptor (PXR) activation by vitamin K on human health. PXR, initially recognized as a master regulator of xenobiotic metabolism in liver, emerges as a key regulator influencing intestinal homeostasis, inflammation, oxidative stress, and autophagy. The activation of PXR by vitamin K highlights its role as a potent endogenous and local agonist with diverse clinical implications. Recent research suggests that the vitamin K-mediated activation of PXR highlights this vitamin's potential in addressing pathophysiological conditions by promoting hepatic detoxification, fortifying gut barrier integrity, and controlling pro-inflammatory and apoptotic pathways. PXR activation by vitamin K provides an intricate association with cancer cell survival, particularly in colorectal and liver cancers, to provide new insights into potential novel therapeutic strategies. Understanding the clinical implications of PXR activation by vitamin K bridges molecular mechanisms with health outcomes, further offering personalized therapeutic approaches for complex diseases.
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Affiliation(s)
- Jeff L. Staudinger
- Division of Basic Sciences, Farber-McIntire Campus, College of Osteopathic Medicine, Kansas City University, Joplin Campus, 2901 St Johns Blvd, Joplin, MO 64804, USA (C.D.); (S.R.)
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4
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Liu J, Malekoltojari A, Asokakumar A, Chow V, Li L, Li H, Grimaldi M, Dang N, Campbell J, Barrett H, Sun J, Navarre W, Wilson D, Wang H, Mani S, Balaguer P, Anakk S, Peng H, Krause HM. Diindoles produced from commensal microbiota metabolites function as endogenous CAR/Nr1i3 ligands. Nat Commun 2024; 15:2563. [PMID: 38519460 PMCID: PMC10960024 DOI: 10.1038/s41467-024-46559-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 02/27/2024] [Indexed: 03/25/2024] Open
Abstract
Numerous studies have demonstrated the correlation between human gut bacteria and host physiology, mediated primarily via nuclear receptors (NRs). Despite this body of work, the systematic identification and characterization of microbe-derived ligands that regulate NRs remain a considerable challenge. In this study, we discover a series of diindole molecules produced from commensal bacteria metabolites that act as specific agonists for the orphan constitutive androstane receptor (CAR). Using various biophysical analyses we show that their nanomolar affinities are comparable to those of synthetic CAR agonists, and that they can activate both rodent and human CAR orthologues, which established synthetic agonists cannot. We also find that the diindoles, diindolylmethane (DIM) and diindolylethane (DIE) selectively up-regulate bona fide CAR target genes in primary human hepatocytes and mouse liver without causing significant side effects. These findings provide new insights into the complex interplay between the gut microbiome and host physiology, as well as new tools for disease treatment.
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Affiliation(s)
- Jiabao Liu
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, M5S 3E1, Canada
| | - Ainaz Malekoltojari
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, M5S 3E1, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Anjana Asokakumar
- Department of Molecular and Integrative Physiology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Vimanda Chow
- Department of Chemistry, York University, Toronto, ON, M3J 1P3, Canada
| | - Linhao Li
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 20 Penn Street, Baltimore, MD, 21201, USA
| | - Hao Li
- Department of Molecular Pharmacology; Department of Genetics; Department of Medicine; Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Marina Grimaldi
- Institut de Recherche en Cancérologie de Montpellier (IRCM), Université Montpellier, Institut régional du Cancer de Montpellier (ICM), Montpellier, Inserm, U1194, France
| | - Nathanlown Dang
- Department of Molecular and Integrative Physiology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Jhenielle Campbell
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Holly Barrett
- Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada
| | - Jianxian Sun
- Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada
- School of the Environment, University of Toronto, Toronto, ON, M5S 3H6, Canada
| | - William Navarre
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Derek Wilson
- Department of Chemistry, York University, Toronto, ON, M3J 1P3, Canada
| | - Hongbing Wang
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 20 Penn Street, Baltimore, MD, 21201, USA
| | - Sridhar Mani
- Department of Molecular Pharmacology; Department of Genetics; Department of Medicine; Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Patrick Balaguer
- Institut de Recherche en Cancérologie de Montpellier (IRCM), Université Montpellier, Institut régional du Cancer de Montpellier (ICM), Montpellier, Inserm, U1194, France
| | - Sayeepriyadarshini Anakk
- Department of Molecular and Integrative Physiology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Hui Peng
- Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada.
- School of the Environment, University of Toronto, Toronto, ON, M5S 3H6, Canada.
| | - Henry M Krause
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, M5S 3E1, Canada.
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.
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5
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Pan Y, Zhang H, Li M, He T, Guo S, Zhu L, Tan J, Wang B. Novel approaches in IBD therapy: targeting the gut microbiota-bile acid axis. Gut Microbes 2024; 16:2356284. [PMID: 38769683 PMCID: PMC11110704 DOI: 10.1080/19490976.2024.2356284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 05/13/2024] [Indexed: 05/22/2024] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic and recurrent condition affecting the gastrointestinal tract. Disturbed gut microbiota and abnormal bile acid (BA) metabolism are notable in IBD, suggesting a bidirectional relationship. Specifically, the diversity of the gut microbiota influences BA composition, whereas altered BA profiles can disrupt the microbiota. IBD patients often exhibit increased primary bile acid and reduced secondary bile acid concentrations due to a diminished bacteria population essential for BA metabolism. This imbalance activates BA receptors, undermining intestinal integrity and immune function. Consequently, targeting the microbiota-BA axis may rectify these disturbances, offering symptomatic relief in IBD. Here, the interplay between gut microbiota and bile acids (BAs) is reviewed, with a particular focus on the role of gut microbiota in mediating bile acid biotransformation, and contributions of the gut microbiota-BA axis to IBD pathology to unveil potential novel therapeutic avenues for IBD.
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Affiliation(s)
- Yinping Pan
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, PR China
| | - Haojie Zhang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, PR China
| | - Minghui Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, PR China
| | - Tingjing He
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, PR China
| | - Sihao Guo
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, PR China
| | - Liancai Zhu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, PR China
| | - Jun Tan
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological & Chemical engineering, Chongqing University of Education, Chongqing, PR China
| | - Bochu Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, PR China
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6
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Liang Y, Gong Y, Jiang Q, Yu Y, Zhang J. Environmental endocrine disruptors and pregnane X receptor action: A review. Food Chem Toxicol 2023; 179:113976. [PMID: 37532173 DOI: 10.1016/j.fct.2023.113976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/11/2023] [Accepted: 07/28/2023] [Indexed: 08/04/2023]
Abstract
The pregnane X receptor (PXR) is a kind of orphan nuclear receptor activated by a series of ligands. Environmental endocrine disruptors (EEDs) are a wide class of molecules present in the environment that are suspected to have adverse effects on the endocrine system by interfering with the synthesis, transport, degradation, or action of endogenous hormones. Since EEDs may modulate human/rodent PXR, this review aims to summarize EEDs as PXR modulators, including agonists and antagonists. The modular structure of PXR is also described, interestingly, the pharmacology of PXR have been confirmed to vary among different species. Furthermore, PXR play a key role in the regulation of endocrine function. Endocrine disruption of EEDs via PXR and its related pathways are systematically summarized. In brief, this review may provide a way to understand the roles of EEDs in interaction with the nuclear receptors (such as PXR) and the related pathways.
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Affiliation(s)
- Yuan Liang
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Yiyao Gong
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Qiuyan Jiang
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Yifan Yu
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Jie Zhang
- College of Food Science and Engineering, Jilin University, Changchun, 130062, China.
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7
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Kim S, Li H, Jin Y, Armad J, Gu H, Mani S, Cui JY. Maternal PBDE exposure disrupts gut microbiome and promotes hepatic proinflammatory signaling in humanized PXR-transgenic mouse offspring over time. Toxicol Sci 2023; 194:209-225. [PMID: 37267213 PMCID: PMC10375318 DOI: 10.1093/toxsci/kfad056] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
Developmental exposure to the persistent environmental pollutant, polybrominated diphenyl ethers (PBDEs), is associated with increased diabetes prevalence. The microbial tryptophan metabolite, indole-3-propionic acid (IPA), is associated with reduced risk of type 2 diabetes and lower-grade inflammation and is a pregnane X receptor (PXR) activator. To explore the role of IPA in modifying the PBDE developmental toxicity, we orally exposed humanized PXR-transgenic (hPXR-TG) mouse dams to vehicle, 0.1 mg/kg/day DE-71 (an industrial PBDE mixture), DE-71+IPA (20 mg/kg/day), or IPA, from 4 weeks preconception to the end of lactation. Pups were weaned at 21 days of age and IPA supplementation continued in the corresponding treatment groups. Tissues were collected at various ages until 6 months of age (n = 5 per group). In general, the effect of maternal DE-71 exposure on the gut microbiome of pups was amplified over time. The regulation of hepatic cytokines and prototypical xenobiotic-sensing transcription factor target genes by DE-71 and IPA was age- and sex-dependent, where DE-71-mediated mRNA increased selected cytokines (Il10, Il12p40, Il1β [both sexes], and [males]). The hepatic mRNA of the aryl hydrocarbon receptor (AhR) target gene Cyp1a2 was increased by maternal DE-71 and DE-71+IPA exposure at postnatal day 21 but intestinal Cyp1a1 was not altered by any of the exposures and ages. Maternal DE-71 exposure persistently increased serum indole, a known AhR ligand, in age- and sex-dependent manner. In conclusion, maternal DE-71 exposure produced a proinflammatory signature along the gut-liver axis, including gut dysbiosis, dysregulated tryptophan microbial metabolism, attenuated PXR signaling, and elevated AhR signaling in postweaned hPXR-TG pups over time, which was partially corrected by IPA supplementation.
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Affiliation(s)
- Sarah Kim
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105, USA
| | - Hao Li
- Departments of Medicine, Molecular Pharmacology, and Genetics, Albert Einstein College of Medicine, Bronx, New York 10461, USA
| | - Yan Jin
- Center for Translational Science, Florida International University, Port St. Lucie, Florida 34987-2352, USA
| | - Jasmine Armad
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105, USA
| | - Haiwei Gu
- Center for Translational Science, Florida International University, Port St. Lucie, Florida 34987-2352, USA
| | - Sridhar Mani
- Departments of Medicine, Molecular Pharmacology, and Genetics, Albert Einstein College of Medicine, Bronx, New York 10461, USA
| | - Julia Y Cui
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98105, USA
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8
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Long XQ, Liu MZ, Liu ZH, Xia LZ, Lu SP, Xu XP, Wu MH. Bile acids and their receptors: Potential therapeutic targets in inflammatory bowel disease. World J Gastroenterol 2023; 29:4252-4270. [PMID: 37545642 PMCID: PMC10401658 DOI: 10.3748/wjg.v29.i27.4252] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 05/19/2023] [Accepted: 06/21/2023] [Indexed: 07/13/2023] Open
Abstract
Chronic and recurrent inflammatory disorders of the gastrointestinal tract caused by a complex interplay between genetics and intestinal dysbiosis are called inflammatory bowel disease. As a result of the interaction between the liver and the gut microbiota, bile acids are an atypical class of steroids produced in mammals and traditionally known for their function in food absorption. With the development of genomics and metabolomics, more and more data suggest that the pathophysiological mechanisms of inflammatory bowel disease are regulated by bile acids and their receptors. Bile acids operate as signalling molecules by activating a variety of bile acid receptors that impact intestinal flora, epithelial barrier function, and intestinal immunology. Inflammatory bowel disease can be treated in new ways by using these potential molecules. This paper mainly discusses the increasing function of bile acids and their receptors in inflammatory bowel disease and their prospective therapeutic applications. In addition, we explore bile acid metabolism and the interaction of bile acids and the gut microbiota.
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Affiliation(s)
- Xiong-Quan Long
- Department of Gastroenterology, The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha 410005, Hunan Province, China
| | - Ming-Zhu Liu
- Department of Gastroenterology, The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha 410005, Hunan Province, China
| | - Zi-Hao Liu
- Department of Gastroenterology, The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha 410005, Hunan Province, China
| | - Lv-Zhou Xia
- Department of Gastroenterology, The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha 410005, Hunan Province, China
| | - Shi-Peng Lu
- Department of Gastroenterology, The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha 410005, Hunan Province, China
| | - Xiao-Ping Xu
- Department of Gastroenterology, The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha 410005, Hunan Province, China
| | - Ming-Hao Wu
- Department of Gastroenterology, The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha 410005, Hunan Province, China
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9
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Wu J, Yang K, Fan H, Wei M, Xiong Q. Targeting the gut microbiota and its metabolites for type 2 diabetes mellitus. Front Endocrinol (Lausanne) 2023; 14:1114424. [PMID: 37229456 PMCID: PMC10204722 DOI: 10.3389/fendo.2023.1114424] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 04/28/2023] [Indexed: 05/27/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a metabolic disorder characterized by hyperglycemia and insulin resistance. The incidence of T2DM is increasing globally, and a growing body of evidence suggests that gut microbiota dysbiosis may contribute to the development of this disease. Gut microbiota-derived metabolites, including bile acids, lipopolysaccharide, trimethylamine-N-oxide, tryptophan and indole derivatives, and short-chain fatty acids, have been shown to be involved in the pathogenesis of T2DM, playing a key role in the host-microbe crosstalk. This review aims to summarize the molecular links between gut microbiota-derived metabolites and the pathogenesis of T2DM. Additionally, we review the potential therapy and treatments for T2DM using probiotics, prebiotics, fecal microbiota transplantation and other methods to modulate gut microbiota and its metabolites. Clinical trials investigating the role of gut microbiota and its metabolites have been critically discussed. This review highlights that targeting the gut microbiota and its metabolites could be a potential therapeutic strategy for the prevention and treatment of T2DM.
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Affiliation(s)
- Jiaqiang Wu
- The Second Clinical Medical College of Nanchang University, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Kangping Yang
- The Second Clinical Medical College of Nanchang University, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hancheng Fan
- Department of Histology and Embryology, School of Basic Medicine, Nanchang University, Nanchang, China
| | - Meilin Wei
- Department of Endocrinology and Metabolism, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qin Xiong
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Nanchang University, Nanchang, China
- Jiangxi Clinical Research Center for Endocrine and Metabolic Disease, Nanchang, China
- Jiangxi Branch of National Clinical Research Center for Metabolic Disease, Nanchang, China
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10
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Holmes IA, Grundler MC. Phylogenetically under-dispersed gut microbiomes are not correlated with host genomic heterozygosity in a genetically diverse reptile community. Mol Ecol 2023; 32:258-274. [PMID: 36221927 PMCID: PMC9797449 DOI: 10.1111/mec.16733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/09/2022] [Accepted: 09/15/2022] [Indexed: 12/31/2022]
Abstract
While key elements of fitness in vertebrate animals are impacted by their microbiomes, the host genetic characteristics that factor into microbiome composition are not fully understood. Here, we correlate host genomic heterozygosity and gut microbiome phylogenetic diversity across a community of reptiles in southwestern New Mexico to test hypotheses about the behaviour of host genes that drive microbiome assembly. We find that microbiome communities are phylogenetically under-dispersed relative to random expectations, and that host heterozygosity is not correlated with microbiome diversity. Our analyses reinforce results from functional genomic work that identify conserved host immune and nonimmune genes as key players in microbiome assembly, rather than gene families that rely on heterozygosity for their function.
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Affiliation(s)
- Iris A. Holmes
- Museum of Zoology and Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109 USA
- Cornell Institute of Host Microbe Interactions and Disease and Department of Microbiology, Cornell University, Ithaca, NY 14853 USA
| | - Michael C. Grundler
- Museum of Zoology and Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109 USA
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095 USA
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11
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Zhao Q, Chen T, Ni C, Hu Y, Nan Y, Lin W, Liu Y, Zheng F, Shi X, Lin Z, Zhu J, Lin Z. Indole-3-propionic Acid Attenuates HI-Related Blood-Brain Barrier Injury in Neonatal Rats by Modulating the PXR Signaling Pathway. ACS Chem Neurosci 2022; 13:2897-2912. [PMID: 36129348 DOI: 10.1021/acschemneuro.2c00418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The blood-brain barrier (BBB) is an important physiological barrier of the human body contributing to maintaining brain homeostasis and normal function. Hypoxic-ischemic (HI)-related brain injury is one of the main causes of neonatal acute morbidity and chronic disability. The previous research of our group confirmed that there was serious BBB destruction during HI brain injury. However, at present, the protection strategy of BBB is very limited, and further research on the protection mechanism is warranted. Indole-3-propionic acid (IPA) is a bacterial metabolism with anti-inflammatory and antioxidant properties, having neuroprotective effects and protective effects on the mucosal barrier. However, the role of IPA in BBB is not clear. In this research, we demonstrated the protective effect of IPA on BBB disruption from HI brain injury and hypothesized that it involves the amelioration of inflammation, oxidative stress, and MMP activation, thereby inhibiting apoptosis of rat brain microvascular endothelial cells (rBMECs). We demonstrated that expression levels of several inflammatory markers, including iNOS, TNF-α, IL-6, and IL-1β, were significantly increased from HI damage or OGD injury. However, IPA treatment inhibited the increase significantly. Moreover, we demonstrated that IPA reduced intracellular ROS levels and MMP activation in rBMECs from OGD injury. Further research on the underlying detailed molecular mechanisms suggested that IPA attenuates inflammation by inhibiting NF-κB signaling. Finally, we investigated the mechanism of the relationship between PXR activation and NF-κB inhibition. The results suggested overexpression of PXR in rBMECs could significantly counteract the decrease of junction proteins and downregulate the increased p-IκB-α and p-NF-κB from OGD injury. However, the protective effects of IPA were reversed by antagonists of the PXR. Taken together, IPA might mitigate HI-induced damage of the BBB and the protective effect may be exerted through modulating the PXR signaling pathway.
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Affiliation(s)
- Qianlei Zhao
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Tingting Chen
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Chao Ni
- Department of Pediatric Cardiovascular, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Yingying Hu
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Yan Nan
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Wei Lin
- Department of PICU, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Yanli Liu
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Feixia Zheng
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Xulai Shi
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Zhongdong Lin
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Jianghu Zhu
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Zhenlang Lin
- Department of Neonatology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
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Effect of DSS-Induced Ulcerative Colitis and Butyrate on the Cytochrome P450 2A5: Contribution of the Microbiome. Int J Mol Sci 2022; 23:ijms231911627. [PMID: 36232929 PMCID: PMC9569822 DOI: 10.3390/ijms231911627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/27/2022] [Accepted: 09/27/2022] [Indexed: 12/02/2022] Open
Abstract
Several studies have indicated the beneficial anti-inflammatory effect of butyrate in inflammatory bowel disease (IBD) therapy implying attempts to increase butyrate production in the gut through orally administered dietary supplementation. Through the gut-liver axis, however, butyrate may reach directly the liver and influence the drug-metabolizing ability of hepatic enzymes, and, indirectly, also the outcome of applied pharmacotherapy. The focus of our study was on the liver microsomal cytochrome P450 (CYP) 2A5, which is a mouse orthologue of human CYP2A6 responsible for metabolism of metronidazole, an antibiotic used to treat IBD. Our findings revealed that specific pathogen-free (SPF) and germ-free (GF) mice with dextran sulfate sodium (DSS)-induced colitis varied markedly in enzyme activity of CYP2A and responded differently to butyrate pre-treatment. A significant decrease (to 50%) of the CYP2A activity was observed in SPF mice with colitis; however, an administration of butyrate prior to DSS reversed this inhibition effect. This phenomenon was not observed in GF mice. The results highlight an important role of gut microbiota in the regulation of CYP2A under inflammatory conditions. Due to the role of CYP2A in metronidazole metabolism, this phenomenon may have an impact on the IBD therapy. Butyrate administration, hence, brings promising therapeutic potential for improving symptoms of gut inflammation; however, possible interactions with drug metabolism need to be further studied.
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Guan B, Tong J, Hao H, Yang Z, Chen K, Xu H, Wang A. Bile acid coordinates microbiota homeostasis and systemic immunometabolism in cardiometabolic diseases. Acta Pharm Sin B 2022; 12:2129-2149. [PMID: 35646540 PMCID: PMC9136572 DOI: 10.1016/j.apsb.2021.12.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 11/25/2021] [Accepted: 11/29/2021] [Indexed: 02/08/2023] Open
Abstract
Cardiometabolic disease (CMD), characterized with metabolic disorder triggered cardiovascular events, is a leading cause of death and disability. Metabolic disorders trigger chronic low-grade inflammation, and actually, a new concept of metaflammation has been proposed to define the state of metabolism connected with immunological adaptations. Amongst the continuously increased list of systemic metabolites in regulation of immune system, bile acids (BAs) represent a distinct class of metabolites implicated in the whole process of CMD development because of its multifaceted roles in shaping systemic immunometabolism. BAs can directly modulate the immune system by either boosting or inhibiting inflammatory responses via diverse mechanisms. Moreover, BAs are key determinants in maintaining the dynamic communication between the host and microbiota. Importantly, BAs via targeting Farnesoid X receptor (FXR) and diverse other nuclear receptors play key roles in regulating metabolic homeostasis of lipids, glucose, and amino acids. Moreover, BAs axis per se is susceptible to inflammatory and metabolic intervention, and thereby BAs axis may constitute a reciprocal regulatory loop in metaflammation. We thus propose that BAs axis represents a core coordinator in integrating systemic immunometabolism implicated in the process of CMD. We provide an updated summary and an intensive discussion about how BAs shape both the innate and adaptive immune system, and how BAs axis function as a core coordinator in integrating metabolic disorder to chronic inflammation in conditions of CMD.
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Key Words
- AS, atherosclerosis
- ASBT, apical sodium-dependent bile salt transporter
- BAs, bile acids
- BSEP, bile salt export pump
- BSH, bile salt hydrolases
- Bile acid
- CA, cholic acid
- CAR, constitutive androstane receptor
- CCs, cholesterol crystals
- CDCA, chenodeoxycholic acid
- CMD, cardiometabolic disease
- CVDs, cardiovascular diseases
- CYP7A1, cholesterol 7 alpha-hydroxylase
- CYP8B1, sterol 12α-hydroxylase
- Cardiometabolic diseases
- DAMPs, danger-associated molecular patterns
- DCA, deoxycholic acid
- DCs, dendritic cells
- ERK, extracellular signal-regulated kinase
- FA, fatty acids
- FFAs, free fatty acids
- FGF, fibroblast growth factor
- FMO3, flavin-containing monooxygenase 3
- FXR, farnesoid X receptor
- GLP-1, glucagon-like peptide 1
- HCA, hyocholic acid
- HDL, high-density lipoprotein
- HFD, high fat diet
- HNF, hepatocyte nuclear receptor
- IL, interleukin
- IR, insulin resistance
- JNK, c-Jun N-terminal protein kinase
- LCA, lithocholic acid
- LDL, low-density lipoprotein
- LDLR, low-density lipoprotein receptor
- LPS, lipopolysaccharide
- NAFLD, non-alcoholic fatty liver disease
- NASH, nonalcoholic steatohepatitis
- NF-κB, nuclear factor-κB
- NLRP3, NLR family pyrin domain containing 3
- Nuclear receptors
- OCA, obeticholic acid
- PKA, protein kinase A
- PPARα, peroxisome proliferator-activated receptor alpha
- PXR, pregnane X receptor
- RCT, reverses cholesterol transportation
- ROR, retinoid-related orphan receptor
- S1PR2, sphingosine-1-phosphate receptor 2
- SCFAs, short-chain fatty acids
- SHP, small heterodimer partner
- Systemic immunometabolism
- TG, triglyceride
- TGR5, takeda G-protein receptor 5
- TLR, toll-like receptor
- TMAO, trimethylamine N-oxide
- Therapeutic opportunities
- UDCA, ursodeoxycholic acid
- VDR, vitamin D receptor
- cAMP, cyclic adenosine monophosphate
- mTOR, mammalian target of rapamycin
- ox-LDL, oxidated low-density lipoprotein
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Affiliation(s)
- Baoyi Guan
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing 100091, China
| | - Jinlin Tong
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Haiping Hao
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Zhixu Yang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Keji Chen
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing 100091, China
| | - Hao Xu
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing 100091, China
| | - Anlu Wang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing 100091, China
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