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Burr AHP, Ji J, Ozler K, Mentrup HL, Eskiocak O, Yueh B, Cumberland R, Menk AV, Rittenhouse N, Marshall CW, Chiaranunt P, Zhang X, Mullinax L, Overacre-Delgoffe A, Cooper VS, Poholek AC, Delgoffe GM, Mollen KP, Beyaz S, Hand TW. Excess Dietary Sugar Alters Colonocyte Metabolism and Impairs the Proliferative Response to Damage. Cell Mol Gastroenterol Hepatol 2023; 16:287-316. [PMID: 37172822 PMCID: PMC10394273 DOI: 10.1016/j.jcmgh.2023.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023]
Abstract
BACKGROUND & AIMS The colonic epithelium requires continuous renewal by crypt resident intestinal stem cells (ISCs) and transit-amplifying (TA) cells to maintain barrier integrity, especially after inflammatory damage. The diet of high-income countries contains increasing amounts of sugar, such as sucrose. ISCs and TA cells are sensitive to dietary metabolites, but whether excess sugar affects their function directly is unknown. METHODS Here, we used a combination of 3-dimensional colonoids and a mouse model of colon damage/repair (dextran sodium sulfate colitis) to show the direct effect of sugar on the transcriptional, metabolic, and regenerative functions of crypt ISCs and TA cells. RESULTS We show that high-sugar conditions directly limit murine and human colonoid development, which is associated with a reduction in the expression of proliferative genes, adenosine triphosphate levels, and the accumulation of pyruvate. Treatment of colonoids with dichloroacetate, which forces pyruvate into the tricarboxylic acid cycle, restored their growth. In concert, dextran sodium sulfate treatment of mice fed a high-sugar diet led to massive irreparable damage that was independent of the colonic microbiota and its metabolites. Analyses on crypt cells from high-sucrose-fed mice showed a reduction in the expression of ISC genes, impeded proliferative potential, and increased glycolytic potential without a commensurate increase in aerobic respiration. CONCLUSIONS Taken together, our results indicate that short-term, excess dietary sucrose can directly modulate intestinal crypt cell metabolism and inhibit ISC/TA cell regenerative proliferation. This knowledge may inform diets that better support the treatment of acute intestinal injury.
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Affiliation(s)
- Ansen H P Burr
- Richard King Mellon Institute for Pediatric Research, Pediatrics Department, Infectious Disease Section, University of Pittsburgh Medical Center Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Immunology, University of Pittsburgh, School of Medicine, Pittsburgh, Pennsylvania
| | - Junyi Ji
- School of Medicine, Tsinghua University, Beijing, China
| | - Kadir Ozler
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Heather L Mentrup
- Department of Surgery, University of Pittsburgh School of Medicine. University of Pittsburgh Medical Center Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Onur Eskiocak
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Brian Yueh
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Rachel Cumberland
- Tumor Microenvironment Center, University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, Pennsylvania
| | - Ashley V Menk
- Tumor Microenvironment Center, University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, Pennsylvania
| | - Natalie Rittenhouse
- Richard King Mellon Institute for Pediatric Research, Pediatrics Department, Infectious Disease Section, University of Pittsburgh Medical Center Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Chris W Marshall
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, School of Medicine, Pittsburgh, Pennsylvania
| | - Pailin Chiaranunt
- Richard King Mellon Institute for Pediatric Research, Pediatrics Department, Infectious Disease Section, University of Pittsburgh Medical Center Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Xiaoyi Zhang
- Richard King Mellon Institute for Pediatric Research, Pediatrics Department, Infectious Disease Section, University of Pittsburgh Medical Center Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Gastroenterology, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center Children's Hospital
| | - Lauren Mullinax
- Richard King Mellon Institute for Pediatric Research, Pediatrics Department, Infectious Disease Section, University of Pittsburgh Medical Center Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Gastroenterology, University of Pittsburgh School of Medicine, University of Pittsburgh Medical Center Children's Hospital
| | - Abigail Overacre-Delgoffe
- Richard King Mellon Institute for Pediatric Research, Pediatrics Department, Infectious Disease Section, University of Pittsburgh Medical Center Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Vaughn S Cooper
- Department of Microbiology and Molecular Genetics, University of Pittsburgh, School of Medicine, Pittsburgh, Pennsylvania
| | - Amanda C Poholek
- Richard King Mellon Institute for Pediatric Research, Pediatrics Department, Infectious Disease Section, University of Pittsburgh Medical Center Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Immunology, University of Pittsburgh, School of Medicine, Pittsburgh, Pennsylvania
| | - Greg M Delgoffe
- Department of Immunology, University of Pittsburgh, School of Medicine, Pittsburgh, Pennsylvania; Tumor Microenvironment Center, University of Pittsburgh Medical Center Hillman Cancer Center, Pittsburgh, Pennsylvania
| | - Kevin P Mollen
- Department of Surgery, University of Pittsburgh School of Medicine. University of Pittsburgh Medical Center Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Semir Beyaz
- Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
| | - Timothy W Hand
- Richard King Mellon Institute for Pediatric Research, Pediatrics Department, Infectious Disease Section, University of Pittsburgh Medical Center Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Immunology, University of Pittsburgh, School of Medicine, Pittsburgh, Pennsylvania.
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Tawk C, Lim B, Bencivenga-Barry NA, Lees HJ, Ramos RJF, Cross J, Goodman AL. Infection leaves a genetic and functional mark on the gut population of a commensal bacterium. Cell Host Microbe 2023; 31:811-826.e6. [PMID: 37119822 PMCID: PMC10197903 DOI: 10.1016/j.chom.2023.04.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 03/04/2023] [Accepted: 04/04/2023] [Indexed: 05/01/2023]
Abstract
Gastrointestinal infection changes microbiome composition and gene expression. In this study, we demonstrate that enteric infection also promotes rapid genetic adaptation in a gut commensal. Measurements of Bacteroides thetaiotaomicron population dynamics within gnotobiotic mice reveal that these populations are relatively stable in the absence of infection, and the introduction of the enteropathogen Citrobacter rodentium reproducibly promotes rapid selection for a single-nucleotide variant with increased fitness. This mutation promotes resistance to oxidative stress by altering the sequence of a protein, IctA, that is essential for fitness during infection. We identified commensals from multiple phyla that attenuate the selection of this variant during infection. These species increase the levels of vitamin B6 in the gut lumen. Direct administration of this vitamin is sufficient to significantly reduce variant expansion in infected mice. Our work demonstrates that a self-limited enteric infection can leave a stable mark on resident commensal populations that increase fitness during infection.
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Affiliation(s)
- Caroline Tawk
- Department of Microbial Pathogenesis and Microbial Sciences Institute, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Bentley Lim
- Department of Microbial Pathogenesis and Microbial Sciences Institute, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Natasha A Bencivenga-Barry
- Department of Microbial Pathogenesis and Microbial Sciences Institute, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Hannah J Lees
- The Donald B. and Catherine C. Marron Cancer Metabolism Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Ruben J F Ramos
- The Donald B. and Catherine C. Marron Cancer Metabolism Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Justin Cross
- The Donald B. and Catherine C. Marron Cancer Metabolism Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Andrew L Goodman
- Department of Microbial Pathogenesis and Microbial Sciences Institute, Yale University School of Medicine, New Haven, CT 06510, USA.
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Zhou B, Chen K, Gong H, Zhao L, Xing X, Su H, Zhang Y. Analysis of gut microbiota in rats with bile duct obstruction after biliary drainage. Microb Pathog 2023; 180:106149. [PMID: 37169314 DOI: 10.1016/j.micpath.2023.106149] [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: 02/22/2023] [Revised: 05/08/2023] [Accepted: 05/08/2023] [Indexed: 05/13/2023]
Abstract
The abundance of specific gut microorganisms is strongly associated with the concentrations of microbially modified bile acids. This study aimed to investigate the composition of intestinal microbiota in rats subjected to bile duct ligation or biliary drainage. Extrahepatic bile duct ligation was conducted to induce bile duct obstruction in rats. The bile was drained via a percutaneous biliary drainage catheter to cause bile deficiency. The total DNA extracted from fecal samples was sequenced with 16S DNA sequencing. Taxonomic classifications were conducted using the Mothur algorithm and SILVA138 database and were presented along with the abundance presented using a heatmap. The inter- and intra-group differences in the intestinal microbiome composition were analyzed by ANOSIM test. The biomarker microorganisms were screened using the Linear discriminant analysis Effect size method. The possible functional pathways were predicted using the Tax4Fun package. A total of 3277 operational taxonomic units (OTUs) were examined, with 2410 in the Kongbai group, 2236 in the Gengzu group, and 1763 in the Yinliu group. The composition of microorganisms at the levels of phylum, class, order, family, and genus was altered in rats with bile duct obstruction. This composition was then restored by biliary drainage. The top 10 predominant microorganisms were identified that led to the inter-group differences. Functional annotation revealed that the potential functions of the microorganisms with significant differences were enriched in metabolism, cellular processes, and genetic and environmental information processing. The intestinal microbial community was significantly changed in rats with bile duct obstruction. The changes in the abundance of intestinal microbiota Prevotellaceae and Enterobacteriaceae were statistically significant after biliary drainage treatment.
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Affiliation(s)
- Bo Zhou
- Department of Hepatobiliary Surgery, The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, China
| | - Kai Chen
- Department of Hepatobiliary Surgery, The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, China.
| | - Haiyan Gong
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, China
| | - Liyuan Zhao
- Department of Gynecology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, China
| | - Xinfeng Xing
- Department of Hepatobiliary Surgery, The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, China
| | - Hongde Su
- Department of Hepatobiliary Surgery, The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, China
| | - Yu Zhang
- Department of Hepatobiliary Surgery, The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, China
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Ajibola O, Penumutchu S, Gulumbe B, Aminu U, Belenky P. Longitudinal Analysis of the Impacts of Urogenital Schistosomiasis on the Gut microbiota of Adolescents in Nigeria. RESEARCH SQUARE 2023:rs.3.rs-2832346. [PMID: 37163079 PMCID: PMC10168446 DOI: 10.21203/rs.3.rs-2832346/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The gut microbiome is important for many host physiological processes and helminths and these interactions may lead to microbial changes. We carried out a longitudinal study of the impacts of S. haematobium infection on the gut microbiome of adolescents (11-15 years) in northern Nigeria pre and post praziquantel treatment. Using 16S sequencing a total of 267 DNA from faecal samples of infected versus uninfected adolescents were amplified and sequenced on an Illumina Miseq. We assessed the diversity of the taxa using alpha diversity metrices and observed that using Shannon index we obtained significant differences when we compared infected samples at 3, 9 and 12 months to baseline uninfected controls (P= <0.0001, P=0.0342 and P=0.0003 respectively). Microbial community composition analysis revealed that there were only significant differences at 3, 9 and 12 months (P=0.001, P=0.001, P=0.001 and P=0.001, respectively). We also demonstrated that the effects of the infection on the gut was more significant than praziquantel. Overall, our data suggests that S. haematobium, a non-gut resident parasite has indirect interactions with the gut. The bacterial taxa changes we have identified opens up the opportunity to investigate their role in human health, especially in urogenital schistosomiasis endemic communities.
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Smith CJ, Ashford JW. Apolipoprotein ɛ4-Associated Protection Against Pediatric Enteric Infections is a Survival Advantage in Pre-Industrial Populations. J Alzheimers Dis 2023:JAD221218. [PMID: 37125551 DOI: 10.3233/jad-221218] [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: 05/02/2023]
Abstract
Until 300,000 years ago, ancestors of modern humans ubiquitously carried the apolipoprotein E (APOE) ɛ4/ɛ4 genotype, when the ɛ3 allele mutated from the ancestral ɛ4, which elevates the risk of Alzheimer's disease. Modern humans living today predominantly carry the ɛ3 allele, which provides protection against heart disease and dementia in long-lived populations. The ancestral ɛ4 allele has been highly preserved in isolated populations in tropical and Arctic regions with high pathogen burdens, e.g., helminths. Early humans experienced serious enteric infections that exerted evolutionary selection pressure, and factors that mitigate infant and childhood mortality from enteric infections also exert selection pressure. Some bacteria can exploit the host's defensive inflammatory response to colonize and invade the host. Pathogen-induced inflammation associated with infant and childhood diarrhea can damage the gut wall long after the invading organisms are no longer present. Inflammation not only resides in the mucosal wall, but also induces systemic inflammation. Baseline systemic inflammation is lower in ɛ4 carriers, yet ɛ4 carriers display a stronger host inflammatory response that reduces pathogen burdens, increasing infant and early childhood survival. Evolutionary selection of the ɛ3 allele likely occurred after humans moved into temperate zones with lower pathogen burdens, unrelated to protection from Alzheimer's disease.
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Affiliation(s)
| | - J Wesson Ashford
- Stanford University and VA Palo Alto Health Care System, Palo Alto, CA, USA
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Homolak J. Targeting the microbiota-mitochondria crosstalk in neurodegeneration with senotherapeutics. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2023; 136:339-383. [PMID: 37437983 DOI: 10.1016/bs.apcsb.2023.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Neurodegenerative diseases are a group of age-related disorders characterized by a chronic and progressive loss of function and/or structure of synapses, neurons, and glial cells. The etiopathogenesis of neurodegenerative diseases is characterized by a complex network of intricately intertwined pathophysiological processes that are still not fully understood. Safe and effective disease-modifying treatments are urgently needed, but still not available. Accumulating evidence suggests that gastrointestinal dyshomeostasis and microbial dysbiosis might play an important role in neurodegeneration by acting as either primary or secondary pathophysiological factors. The research on the role of microbiota in neurodegeneration is in its early phase; however, accumulating evidence suggests that dysbiosis might promote neurodegenerative diseases by disrupting mitochondrial function and inducing mitochondrial dysfunction-associated senescence (MiDAS), possibly due to bidirectional crosstalk based on the common evolutionary origin of mitochondria and bacteria. Cellular senescence is an onco-supressive homeostatic mechanism that results in an irreversible cell cycle arrest upon exposure to noxious stimuli. Senescent cells resist apoptosis via senescent cell anti-apoptotic pathways (SCAPs) and transition into a state known as senescence-associated secretory phenotype (SASP) that generates a cytotoxic proinflammatory microenvironment. Cellular senescence results in the adoption of a detrimental vicious cycle driven by dysbiosis, mitochondrial dysfunction, inflammation, and oxidative stress - a pathophysiological positive feedback loop that results in neuroinflammation and neurodegeneration. Detrimental effects of MiDAS might be prevented and abolished by mitochondria-targeted senotherapeutics, a group of drugs specifically designed to alleviate senescence by inhibiting SCAPs (senolytics), or inhibiting SASP (senomorphics).
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Affiliation(s)
- Jan Homolak
- Department of Pharmacology, University of Zagreb School of Medicine, Zagreb, Croatia; Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia.
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Avraham R. Untangling Cellular Host-Pathogen Encounters at Infection Bottlenecks. Infect Immun 2023; 91:e0043822. [PMID: 36939328 PMCID: PMC10112260 DOI: 10.1128/iai.00438-22] [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] [Indexed: 03/21/2023] Open
Abstract
Bacterial pathogens can invade the tissue and establish a protected intracellular niche at the site of invasion that can spread locally (e.g., microcolonies) or to systemic sites (e.g., granulomas). Invasion of the tissue and establishment of intracellular infection are rare events that are difficult to study in the in vivo setting but have critical clinical consequences, such as long-term carriage, reinfections, and emergence of antibiotic resistance. Here, I discuss Salmonella interactions with its host macrophage during early stages of infection and their critical role in determining infection outcome. The dynamics of host-pathogen interactions entail highly heterogenous host immunity, bacterial virulence, and metabolic cross talk, requiring in vivo analysis at single-cell resolution. I discuss models and single-cell approaches that provide a global understanding of the establishment of a protected intracellular niche within the tissue and the host-pathogen landscape at infection bottlenecks during early stages of infection. Studying cellular host-pathogen interactions in vivo can improve our knowledge of the trajectory of infection between the initial inoculation with a dose of pathogens and the appearance of symptoms of disease.
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Affiliation(s)
- Roi Avraham
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
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58
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Huang N, Wei Y, Liu M, Yang Z, Yuan K, Chen J, Wu Z, Zheng F, Lei K, He M. Dachaihu decoction ameliorates septic intestinal injury via modulating the gut microbiota and glutathione metabolism as revealed by multi-omics. JOURNAL OF ETHNOPHARMACOLOGY 2023; 312:116505. [PMID: 37080366 DOI: 10.1016/j.jep.2023.116505] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/05/2023] [Accepted: 04/16/2023] [Indexed: 05/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Dachaihu decoction (DCH), a classic formula for Yangming and Shaoyang Syndrome Complex recorded in "Treatise on Cold Damage", has been widely used in treating intestinal disorders and inflammatory diseases with few side effects in China. However, the mechanism of DCH on septic intestinal injury (SII) remains to be explored. AIM OF THE STUDY This study aimed to clarify the mechanism of DCH on SII. MATERIALS AND METHODS SII model of rat, established by cecal ligation and puncture (CLP), was used to study the effect of DCH on SII. 24 h mortality was recorded. Histological changes were observed by H&E staining. The expression of tight junction protein ZO-1 (ZO-1) and mucin2 (MUC2) was determined by immunohistochemical analysis. Secretory IgA (sIgA), diamine oxidase (DAO) and intestinal fatty acid binding protein (iFABP) were determined by enzyme-linked immunosorbent assay (ELISA). IL-1β, IL-6 and TNF-α were measured by ELISA and quantitative Real-time PCR (RT-qPCR). The gut microbiota was analyzed by 16S rRNA sequencing. The potential targets and pathways of DCH in treating SII were analyzed by integrative analysis of transcriptomic and metabolomic methods. Total glutathione (T-GSH), GSH, GSSG (reduced form of GSH), GSH peroxidase (GPX), superoxide dismutase (SOD), malonaldehyde (MDA) and indicators of hepatic and renal function were measured by biochemical kits. RESULTS Medium dose of DCH improved 24 h mortality of SII rats, reduced the pathological changes of ileum, and increased the expression levels of ZO-1, MUC2 and sIgA. DCH decreased DAO, iFABP of serum and IL-1β, IL-6, TNF-α of ileum. DCH improved α- and β-diversity and modulated the structure of gut microbiota, with Escherichia_Shigella decreased and Bacteroides and Ruminococcus increased. GSH metabolism was identified as the key pathway of DCH on SII by integrative analysis of transcriptome and metabolome. GSH/GSSG and the most common indicators of oxidative stress, were validated. Antioxidative T-GSH, GSH, GPX and SOD were increased, while MDA, the mark of lipid peroxidation was downregulated by DCH. Eventually, DCH was proved to be safe and hepato- and nephro-protective. CONCLUSION DCH ameliorated septic intestinal injury possibly by modulating the gut microbiota and enhancing glutathione metabolism of SII rats, without hepatotoxicity and nephrotoxicity.
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Affiliation(s)
- Na Huang
- The Eighth School of Clinical Medicine (Foshan Hospital of Traditional Chinese Medicine), Guangzhou University of Chinese Medicine, Foshan, 528000, China
| | - Yu Wei
- Basic Medical College Guangzhou University of Chinese Medicine, Guangzhou, 510000, China
| | - Meng Liu
- Basic Medical College Guangzhou University of Chinese Medicine, Guangzhou, 510000, China
| | - Zhen Yang
- The Eighth School of Clinical Medicine (Foshan Hospital of Traditional Chinese Medicine), Guangzhou University of Chinese Medicine, Foshan, 528000, China
| | - Kang Yuan
- Foshan Hospital of Traditional Chinese Medicine, Foshan, 528000, China
| | - Jingli Chen
- Foshan Hospital of Traditional Chinese Medicine, Foshan, 528000, China
| | - Zhixin Wu
- Foshan Hospital of Traditional Chinese Medicine, Foshan, 528000, China
| | - Fanghao Zheng
- Foshan Hospital of Traditional Chinese Medicine, Foshan, 528000, China
| | - Kaijun Lei
- Foshan Hospital of Traditional Chinese Medicine, Foshan, 528000, China.
| | - Mingfeng He
- Foshan Hospital of Traditional Chinese Medicine, Foshan, 528000, China.
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Zhao C, Hu X, Qiu M, Bao L, Wu K, Meng X, Zhao Y, Feng L, Duan S, He Y, Zhang N, Fu Y. Sialic acid exacerbates gut dysbiosis-associated mastitis through the microbiota-gut-mammary axis by fueling gut microbiota disruption. MICROBIOME 2023; 11:78. [PMID: 37069691 PMCID: PMC10107595 DOI: 10.1186/s40168-023-01528-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 03/20/2023] [Indexed: 05/12/2023]
Abstract
BACKGROUND Mastitis is one of the most severe diseases in humans and animals, especially on dairy farms. Mounting evidence indicates that gastrointestinal dysbiosis caused by induction of subacute ruminal acidosis (SARA) by high-grain diet consumption and low in dietary fiber is associated with mastitis initiation and development, however, the underlying mechanism remains unknown. RESULTS In the present study, we found that cows with SARA-associated mastitis have altered metabolic profiles in the rumen, with increased sialic acids level in particular. Consumption of sialic acid (SA) in antibiotic-treated mice, but not healthy mice, induced marked mastitis. SA treatment of antibiotic-treated mice also induced mucosal and systemic inflammatory responses, as evidenced by increased colon and liver injuries and several inflammatory markers. In addition, gut dysbiosis caused by antibiotic impaired gut barrier integrity, which was aggravated by SA treatment. SA potentiated serum LPS level caused by antibiotic treatment, leading to increased activation of the TLR4-NF-κB/NLRP3 pathways in the mammary gland and colon. Moreover, SA facilitated gut dysbiosis caused by antibiotic, and especially enhanced Enterobacteriaceae and Akkermansiaceae, which correlated with mastitis parameters. Fecal microbiota transplantation from SA-antibiotic-treated mice mimicked mastitis in recipient mice. In vitro experiments showed that SA prompted Escherichia coli growth and virulence gene expression, leading to higher proinflammatory cytokine production in macrophages. Targeting the inhibition of Enterobacteriaceae by sodium tungstate or treating with the commensal Lactobacillus reuteri alleviated SA-facilitated mastitis. In addition, SARA cows had distinct ruminal microbial structure by the enrichment of SA-utilizing opportunistic pathogenic Moraxellaceae and the depletion of SA-utilizing commensal Prevotellaceae. Treating mice with the specific sialidase inhibitor zanamivir reduced SA production and Moraxellaceae abundance, and improved mastitis in mice caused by ruminal microbiota transplantation from cows with SARA-associated mastitis. CONCLUSIONS This study, for the first time, indicates that SA aggravates gut dysbiosis-induced mastitis by promoting gut microbiota disturbance and is regulated by commensal bacteria, indicating the important role of the microbiota-gut-mammary axis in mastitis pathogenesis and suggesting a potential strategy for mastitis intervention based on gut metabolism regulation. Video Abstract.
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Affiliation(s)
- Caijun Zhao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Xiaoyu Hu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China.
| | - Min Qiu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Lijuan Bao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Keyi Wu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Xiangyue Meng
- Department of Breast Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Yihong Zhao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Lianjun Feng
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Shiyu Duan
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Yuhong He
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Naisheng Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China.
| | - Yunhe Fu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China.
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Gates TJ, Yuan C, Shetty M, Kaiser T, Nelson AC, Chauhan A, Starr TK, Staley C, Subramanian S. Fecal Microbiota Restoration Modulates the Microbiome in Inflammation-Driven Colorectal Cancer. Cancers (Basel) 2023; 15:cancers15082260. [PMID: 37190186 DOI: 10.3390/cancers15082260] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/29/2023] [Accepted: 04/07/2023] [Indexed: 05/17/2023] Open
Abstract
Chronic inflammation of the colon (colitis) is a known risk factor for inflammatory-driven colorectal cancers (id-CRCs), and intestinal microbiota has been implicated in the etiology of id-CRCs. Manipulation of the microbiome is a clinically viable therapeutic approach to limiting id-CRCs. To understand the microbiome changes that occur over time in id-CRCs, we used a mouse model of id-CRCs with the treatment of azoxymethane (AOM) and dextran sodium sulfate (DSS) and measured the microbiome over time. We included cohorts where the microbiome was restored using cage bedding swapping and where the microbiome was depleted using antibiotics to compare to untreated animals. We identified consistent increases in Akkermansia in mice receiving horizontal microbiome transfer (HMT) via cage bedding swapping, while the control cohort had consistent longitudinal increases in Anaeroplasma and Alistipes. Additionally, fecal lipocalin-2 (Lcn-2), a marker of intestinal inflammation, was elevated in unrestored animals compared to restored and antibiotic-treated counterparts following HMT. These observations suggest a potential role for Akkermansia, Anaeroplasma, and Alistipes in regulating colonic inflammation in id-CRCs.
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Affiliation(s)
- Travis J Gates
- Department of Molecular Pharmacology and Therapeutics, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Ce Yuan
- Department of Surgery, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Mihir Shetty
- Department of Obstetrics, Gynecology and Women's Health, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Thomas Kaiser
- Department of Surgery, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Andrew C Nelson
- Department of Laboratory Medicine and Pathology, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Aastha Chauhan
- Department of Laboratory Medicine and Pathology, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Timothy K Starr
- Department of Obstetrics, Gynecology and Women's Health, University of Minnesota Medical School, Minneapolis, MN 55455, USA
- Masonic Cancer Center, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Christopher Staley
- Department of Surgery, University of Minnesota Medical School, Minneapolis, MN 55455, USA
- Masonic Cancer Center, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Subbaya Subramanian
- Department of Surgery, University of Minnesota Medical School, Minneapolis, MN 55455, USA
- Masonic Cancer Center, University of Minnesota Medical School, Minneapolis, MN 55455, USA
- Center for Immunology, University of Minnesota Medical School, Minneapolis, MN 55455, USA
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Tartar T, Akdeniz I, Onalan E, Bakal U, Sarac M, Genc E, Kaymaz T, Kazez A. Investigation of VGLL3 and sub-target genes in the aetiology of paediatric acute appendicitis: a prospective case-control study. Pediatr Surg Int 2023; 39:169. [PMID: 37029824 DOI: 10.1007/s00383-023-05462-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/03/2023] [Indexed: 04/09/2023]
Abstract
PURPOSE Vestigial like family member 3 (VGLL3) and its sub-target genes show considerable transcriptomic overlap in terms of several autoimmune and inflammatory diseases. Herein, we investigated the role of VGLL3 rs13074432 polymorphism and its sub-target genes in the aetiology of acute appendicitis (AA). METHODS In this prospective case-control study, we included 250 patients (age, 0-18 years) who underwent appendectomy with the diagnosis of AA (patient group; blood and appendix tissue samples) and 200 healthy children (control group; only blood samples) without appendectomy. ELISA method was used for protein-level detection of VGLL3 and sub-target genes expression change in obtained tissue samples, and real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) was used for mRNA level detection. Genotyping analyses were performed on DNA samples isolated from blood using TaqMan SNP genotyping test. RESULTS The frequency of TT variant genotype (p < 0.001) and T allele (p = 0.002) showed a significant decrease in the patient group compared with the control group. No significant correlation was observed between the expression of VGLL3 in the appendiceal tissue and patient clinical and demographic data (p > 0.050). CONCLUSION This study revealed that the VGLL3 gene and its sub-target genes are associated with AA aetiology.
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Affiliation(s)
- Tugay Tartar
- Department of Pediatric Surgery, Firat University Faculty of Medicine, 23119, Elazig, Turkey.
| | - Ibrahim Akdeniz
- Department of Pediatric Surgery, Fethi Sekin City Hospital, 23280, Elazig, Turkey
| | - Ebru Onalan
- Department of Medical Biology and Genetics, Firat University Faculty of Medicine, 23119, Elazig, Turkey
| | - Unal Bakal
- Department of Pediatric Surgery, Firat University Faculty of Medicine, 23119, Elazig, Turkey
| | - Mehmet Sarac
- Department of Pediatric Surgery, Adiyaman University Faculty of Medicine, 02200, Elazig, Turkey
| | - Ercan Genc
- Department of Pediatric Surgery, Firat University Faculty of Medicine, 23119, Elazig, Turkey
| | - Tugce Kaymaz
- Department of Medical Biology and Genetics, Firat University Faculty of Medicine, 23119, Elazig, Turkey
| | - Ahmet Kazez
- Department of Pediatric Surgery, Firat University Faculty of Medicine, 23119, Elazig, Turkey
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Yee SM, Choi H, Seon JE, Ban YJ, Kim MJ, Seo JE, Seo JH, Kim S, Moon SH, Yun CH, Lee HB, Kang HS. Axl alleviates DSS-induced colitis by preventing dysbiosis of gut microbiota. Sci Rep 2023; 13:5371. [PMID: 37005456 PMCID: PMC10067963 DOI: 10.1038/s41598-023-32527-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 03/29/2023] [Indexed: 04/04/2023] Open
Abstract
Axl is a tyrosine kinase receptor, a negative regulator for innate immune responses and inflammatory bowel disease (IBD). The gut microbiota regulates intestinal immune homeostasis, but the role of Axl in the pathogenesis of IBD through the regulation of gut microbiota composition remains unresolved. In this study, mice with DSS-induced colitis showed increased Axl expression, which was almost entirely suppressed by depleting the gut microbiota with antibiotics. Axl-/- mice without DSS administration exhibited increased bacterial loads, especially the Proteobacteria abundant in patients with IBD, significantly consistent with DSS-induced colitis mice. Axl-/- mice also had an inflammatory intestinal microenvironment with reduced antimicrobial peptides and overexpression of inflammatory cytokines. The onset of DSS-induced colitis occurred faster with an abnormal expansion of Proteobacteria in Axl-/- mice than in WT mice. These findings suggest that a lack of Axl signaling exacerbates colitis by inducing aberrant compositions of the gut microbiota in conjunction with an inflammatory gut microenvironment. In conclusion, the data demonstrated that Axl signaling could ameliorate the pathogenesis of colitis by preventing dysbiosis of gut microbiota. Therefore, Axl may act as a potential novel biomarker for IBD and can be a potential candidate for the prophylactic or therapeutic target of diverse microbiota dysbiosis-related diseases.
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Affiliation(s)
- Su-Min Yee
- School of Biological Sciences and Technology, Chonnam National University, 77 Yongbong-Ro, Buk-Gu, Gwangju, 61186, Republic of Korea
| | - Harim Choi
- Department of Nursing, Nambu University, 23 Chumdan Jungang-Ro, Gwangsan-Gu, Gwangju, 62271, Republic of Korea
| | - Jeong-Eun Seon
- School of Biological Sciences and Technology, Chonnam National University, 77 Yongbong-Ro, Buk-Gu, Gwangju, 61186, Republic of Korea
| | - Yu-Jin Ban
- School of Biological Sciences and Technology, Chonnam National University, 77 Yongbong-Ro, Buk-Gu, Gwangju, 61186, Republic of Korea
| | - Min-Jae Kim
- School of Biological Sciences and Technology, Chonnam National University, 77 Yongbong-Ro, Buk-Gu, Gwangju, 61186, Republic of Korea
| | - Jae-Eun Seo
- School of Biological Sciences and Technology, Chonnam National University, 77 Yongbong-Ro, Buk-Gu, Gwangju, 61186, Republic of Korea
| | - Ja Hun Seo
- School of Biological Sciences and Technology, Chonnam National University, 77 Yongbong-Ro, Buk-Gu, Gwangju, 61186, Republic of Korea
| | - Sehyeon Kim
- School of Biological Sciences and Technology, Chonnam National University, 77 Yongbong-Ro, Buk-Gu, Gwangju, 61186, Republic of Korea
| | - Seo Hee Moon
- School of Biological Sciences and Technology, Chonnam National University, 77 Yongbong-Ro, Buk-Gu, Gwangju, 61186, Republic of Korea
| | - Chul-Ho Yun
- School of Biological Sciences and Technology, Chonnam National University, 77 Yongbong-Ro, Buk-Gu, Gwangju, 61186, Republic of Korea
| | - Hyang Burm Lee
- Environmental Microbiology Lab, Department of Agricultural Biological Chemistry, Chonnam National University, 77 Yongbong-Ro, Buk-Gu, Gwangju, 61186, Republic of Korea
| | - Hyung-Sik Kang
- School of Biological Sciences and Technology, Chonnam National University, 77 Yongbong-Ro, Buk-Gu, Gwangju, 61186, Republic of Korea.
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Tabatabaeizadeh SA, Tafazoli N. Effect of probiotic yogurt on gestational diabetes mellitus: A systematic review and meta-analysis. Diabetes Metab Syndr 2023; 17:102758. [PMID: 37062185 DOI: 10.1016/j.dsx.2023.102758] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 03/29/2023] [Accepted: 04/01/2023] [Indexed: 04/18/2023]
Abstract
BACKGROUND AND AIMS Gestational diabetes mellitus is one of the important complications of pregnancy and is related to many adverse events. There is evidence that probiotics can be considered a preventive and therapeutic option in gestational diabetes mellitus. In this meta-analysis, we have focused on the effect of probiotic yogurt as a natural product on gestational diabetes mellitus. METHODS A systematic literature search was done through PUBMED/Medline, Google Scholar, Cochrane Library, and EBSCO up to December 2022. This meta-analysis followed the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) guidelines for the evaluation of the effect of probiotic yogurt on gestational diabetes mellitus. RESULTS Four manuscripts with a total of 533 participants were included in this meta-analysis. There was a statistically significant association between probiotic yogurt and reduced risk of gestational diabetes mellitus (Pooled OR 0.35; 95% CI 0.19-0.62; I2 = 0.0%). Furthermore, the mean reduction in the fasting plasma glucose was significantly higher in the probiotic yogurt groups (Hedges' g = -0.37; 95% CI -0.68 to -0.05; I2 = 0.0%). CONCLUSION This meta-analysis suggests that probiotic yogurt lowers the risk of gestational diabetes mellitus. Also, it is related to a significant reduction in fasting plasma glucose. These findings promise that probiotic yogurt could be regarded as a safe and low-cost therapy and preventive option for gestational diabetes mellitus. However, more randomized controlled trials with different doses and more probiotic strains with varying systems of delivery are warranted.
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Ju T, Bourrie BCT, Forgie AJ, Pepin DM, Tollenaar S, Sergi CM, Willing BP. The Gut Commensal Escherichia coli Aggravates High-Fat-Diet-Induced Obesity and Insulin Resistance in Mice. Appl Environ Microbiol 2023; 89:e0162822. [PMID: 36809030 PMCID: PMC10057047 DOI: 10.1128/aem.01628-22] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 01/18/2023] [Indexed: 02/23/2023] Open
Abstract
Changes in the gut microbiota have been linked to metabolic endotoxemia as a contributing mechanism in the development of obesity and type 2 diabetes. Although identifying specific microbial taxa associated with obesity and type 2 diabetes remains difficult, certain bacteria may play an important role in initiating metabolic inflammation during disease development. The enrichment of the family Enterobacteriaceae, largely represented by Escherichia coli, induced by a high-fat diet (HFD) has been correlated with impaired glucose homeostasis; however, whether the enrichment of Enterobacteriaceae in a complex gut microbial community in response to an HFD contributes to metabolic disease has not been established. To investigate whether the expansion of Enterobacteriaceae amplifies HFD-induced metabolic disease, a tractable mouse model with the presence or absence of a commensal E. coli strain was established. With an HFD treatment, but not a standard-chow diet, the presence of E. coli significantly increased body weight and adiposity and induced impaired glucose tolerance. In addition, E. coli colonization led to increased inflammation in liver and adipose and intestinal tissue under an HFD regimen. With a modest effect on gut microbial composition, E. coli colonization resulted in significant changes in the predicted functional potential of microbial communities. The results demonstrated the role of commensal E. coli in glucose homeostasis and energy metabolism in response to an HFD, indicating contributions of commensal bacteria to the pathogenesis of obesity and type 2 diabetes. The findings of this research identified a targetable subset of the microbiota in the treatment of people with metabolic inflammation. IMPORTANCE Although identifying specific microbial taxa associated with obesity and type 2 diabetes remains difficult, certain bacteria may play an important role in initiating metabolic inflammation during disease development. Here, we used a mouse model distinguishable by the presence or absence of a commensal Escherichia coli strain in combination with a high-fat diet challenge to investigate the impact of E. coli on host metabolic outcomes. This is the first study to show that the addition of a single bacterial species to an animal already colonized with a complex microbial community can increase severity of metabolic outcomes. This study is of interest to a wide group of researchers because it provides compelling evidence to target the gut microbiota for therapeutic purposes by which personalized medicines can be made for treating metabolic inflammation. The study also provides an explanation for variability in studies investigating host metabolic outcomes and immune response to diet interventions.
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Affiliation(s)
- Tingting Ju
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Benjamin C. T. Bourrie
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Andrew J. Forgie
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Deanna M. Pepin
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Stephanie Tollenaar
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Consolato M. Sergi
- Department of Laboratory Medicine and Pathology, Stollery Children’s Hospital, University of Alberta, Edmonton, Alberta, Canada
- Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
| | - Benjamin P. Willing
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
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Marano G, Mazza M, Lisci FM, Ciliberto M, Traversi G, Kotzalidis GD, De Berardis D, Laterza L, Sani G, Gasbarrini A, Gaetani E. The Microbiota-Gut-Brain Axis: Psychoneuroimmunological Insights. Nutrients 2023; 15:nu15061496. [PMID: 36986226 PMCID: PMC10059722 DOI: 10.3390/nu15061496] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/18/2023] [Accepted: 03/19/2023] [Indexed: 03/30/2023] Open
Abstract
There is growing interest in the role that the intestinal microbiota and the related autoimmune processes may have in the genesis and presentation of some psychiatric diseases. An alteration in the communication of the microbiota-gut-brain axis, which constitutes a communicative model between the central nervous system (CNS) and the gastro-enteric tract, has been identified as one of the possible causes of some psychiatric diseases. The purpose of this narrative review is to describe evidence supporting a role of the gut microbiota in psychiatric diseases and the impact of diet on microbiota and mental health. Change in the composition of the gut microbiota could determine an increase in the permeability of the intestinal barrier, leading to a cytokine storm. This could trigger a systemic inflammatory activation and immune response: this series of events could have repercussions on the release of some neurotransmitters, altering the activity of the hypothalamic-pituitary-adrenal axis, and reducing the presence of trophic brain factors. Although gut microbiota and psychiatric disorders seem to be connected, more effort is needed to understand the potential causative mechanisms underlying the interactions between these systems.
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Affiliation(s)
- Giuseppe Marano
- Department of Geriatrics, Neuroscience and Orthopedics, Institute of Psychiatry and Psychology, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Marianna Mazza
- Department of Geriatrics, Neuroscience and Orthopedics, Institute of Psychiatry and Psychology, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Francesco Maria Lisci
- Department of Geriatrics, Neuroscience and Orthopedics, Institute of Psychiatry and Psychology, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Michele Ciliberto
- Department of Geriatrics, Neuroscience and Orthopedics, Institute of Psychiatry and Psychology, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Gianandrea Traversi
- Unit of Medical Genetics, Department of Laboratory Medicine, Fatebenefratelli Isola Tiberina-Gemelli Isola, 00168 Rome, Italy
| | - Georgios Demetrios Kotzalidis
- Department of Geriatrics, Neuroscience and Orthopedics, Institute of Psychiatry and Psychology, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
- Department of Neurosciences, Mental Health and Sensory Organs (NESMOS), Sant'Andrea Hospital, Sapienza University of Rome, 00189 Rome, Italy
| | | | - Lucrezia Laterza
- CEMAD Digestive Diseases Center, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Gabriele Sani
- Department of Geriatrics, Neuroscience and Orthopedics, Institute of Psychiatry and Psychology, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Antonio Gasbarrini
- Internal Medicine and Gastroenterology, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, 00168 Rome, Italy
| | - Eleonora Gaetani
- Department of Medical and Surgical Sciences, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
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Lindner M, Radke DI, Elke G. [Bacterial gut microbiota-key player in sepsis]. Med Klin Intensivmed Notfmed 2023; 118:107-113. [PMID: 36807754 DOI: 10.1007/s00063-023-00993-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 12/16/2022] [Accepted: 12/21/2022] [Indexed: 02/19/2023]
Abstract
The gut microbiota is comprised of over 1200 different bacteria and forms a symbiotic community with the human organism, the holobiont. It plays an important role in the maintenance of homeostasis, e.g., of the immune system and essential metabolic processes. Disturbances in the balance of this reciprocal relationship are called dysbiosis and, in the field of sepsis, are associated with incidence of disease, extent of the systemic inflammatory response, severity of organ dysfunction, and mortality. In addition to providing guiding principles in the fascinating relationship between "human and microbe," this article summarizes recent findings regarding the role of the bacterial gut microbiota in sepsis, which is one a very relevant in intensive care medicine.
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Affiliation(s)
- Matthias Lindner
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3 Haus 12, 24105, Kiel, Deutschland.
| | - David I Radke
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3 Haus 12, 24105, Kiel, Deutschland
| | - Gunnar Elke
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3 Haus 12, 24105, Kiel, Deutschland
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Yang R, Shan S, Shi J, Li H, An N, Li S, Cui K, Guo H, Li Z. Coprococcus eutactus, a Potent Probiotic, Alleviates Colitis via Acetate-Mediated IgA Response and Microbiota Restoration. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3273-3284. [PMID: 36786768 DOI: 10.1021/acs.jafc.2c06697] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Inflammatory bowel disease (IBD) is a complex disease characterized by relapsing episodes of inflammation of the colonic mucosa. Research into IBD suggests that this disease condition is caused by alterations in resident mucosal bacterial populations. Our previous study showed that Coprococcus was significantly elevated during the improvement of IBD. Human metagenome database GMrepo also indicates Coprococcus, in particular, Coprococcus eutactus (C. eutactus), which was negatively associated with IBD. The current study implied the alleviated effects and mechanisms of C. eutactus on dextran sodium sulfate-induced experimental colitis mice. Gavage with C. eutactus-ameliorated acute colitis, as evidenced, relieved weight loss, decreased concentrations of proinflammatory cytokines TNF-α, IL-1β, and IL-6, and increased anti-inflammatory factors, IL-4, IL-5, and IL-10. In addition, C. eutactus enhanced the maturation of goblet cells and the expressions of mucins and restored the expressions of tight junction proteins such as claudin-1, occludin, and ZO-1. As a short-chain fatty acid-producing bacterium, C. eutactus mainly generates acetic acid. Interestingly, not only high levels of secretory immunoglobulin A (SIgA) but also increased IgA-producing plasma cells were observed in colitis mice during the administration of C. eutactus. Importantly, our data demonstrated that colonic SIgA is specifically coated on pathogens of Enterobacteriaceae. Owing to the selective binding effect of SIgA on microorganisms, the microbial diversity in the intestinal lumen and mucosa of C. eutactus-treated colitis mice was significantly restored, and the microbiota structure was remodeled. These findings provide substantial insight that C. eutactus as a promising probiotic can ameliorate colitis. In conclusion, our findings may deliver a novel approach to the prevention and biotherapy of IBD.
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Affiliation(s)
- Ruipeng Yang
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Shuhua Shan
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Jiangying Shi
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Hanqing Li
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Ning An
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Songtao Li
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Kaili Cui
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Huiqin Guo
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Zhuoyu Li
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
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Moutaharrik S, Maroni A, Neut C, Dubuquoy C, Dubuquoy L, Foppoli A, Cerea M, Palugan L, Siepmann F, Siepmann J, Gazzaniga A. In vitro and in vivo evaluation of a pH-, microbiota- and time-based oral delivery platform for colonic release. Eur J Pharm Biopharm 2023; 183:13-23. [PMID: 36563887 DOI: 10.1016/j.ejpb.2022.12.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/10/2022] [Accepted: 12/18/2022] [Indexed: 12/24/2022]
Abstract
Several formulation strategies have been proposed for oral colon delivery, particularly for the therapy of inflammatory bowel disease (IBD). However, targeting the large intestine remains a challenging goal. The aim of this study was to develop and evaluate a novel type of drug delivery system, which is based on multiple drug release triggers for reliable performance. The system consists of: (i) a drug core, (ii) an inner swellable low-viscosity hydroxypropyl methylcellulose (HPMC) layer, and (iii) an outer film coating based on a Eudragit® S:high-methoxyl (HM) pectin (7:3 w/w) blend, optionally containing chitosan. Convex immediate release tablets (2 or 4 mm in diameter) containing paracetamol or 5-aminosalicylic acid (5-ASA) were coated in a fluid bed. The double-coated tablets exhibited pulsatile release profiles when changing the release medium from 0.1 N HCl to phosphate buffer pH 7.4. Also, drug release was faster in simulated colonic fluid (SCF) in the presence of fecal bacteria from IBD patients compared to control culture medium from tablets with outer Eudragit® S: HM pectin: chitosan coatings. The latter systems showed promising results in the control of the progression of colitis and alteration of the microbiota in a preliminary rat study.
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Affiliation(s)
- S Moutaharrik
- Università degli Studi di Milano, Dipartimento di Scienze Farmaceutiche (DISFARM), Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli", 20133 Milan, Italy.
| | - A Maroni
- Università degli Studi di Milano, Dipartimento di Scienze Farmaceutiche (DISFARM), Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli", 20133 Milan, Italy.
| | - C Neut
- University of Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France.
| | - C Dubuquoy
- University of Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France.
| | - L Dubuquoy
- University of Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, F-59000 Lille, France.
| | - A Foppoli
- Università degli Studi di Milano, Dipartimento di Scienze Farmaceutiche (DISFARM), Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli", 20133 Milan, Italy.
| | - M Cerea
- Università degli Studi di Milano, Dipartimento di Scienze Farmaceutiche (DISFARM), Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli", 20133 Milan, Italy.
| | - L Palugan
- Università degli Studi di Milano, Dipartimento di Scienze Farmaceutiche (DISFARM), Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli", 20133 Milan, Italy.
| | - F Siepmann
- University of Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France.
| | - J Siepmann
- University of Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France.
| | - A Gazzaniga
- Università degli Studi di Milano, Dipartimento di Scienze Farmaceutiche (DISFARM), Sezione di Tecnologia e Legislazione Farmaceutiche "Maria Edvige Sangalli", 20133 Milan, Italy.
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Jiang L, Yuan C, Ye W, Huang Q, Chen Z, Wu W, Qian L. Akkermansia and its metabolites play key roles in the treatment of campylobacteriosis in mice. Front Immunol 2023; 13:1061627. [PMID: 36713373 PMCID: PMC9877526 DOI: 10.3389/fimmu.2022.1061627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 12/21/2022] [Indexed: 01/13/2023] Open
Abstract
Introduction Campylobacter jejuni (C. jejuni) is a common food-borne bacterial pathogen that can use the host's innate immune response to induce the development of colitis. There has been some research on the role of normal intestinal flora in C. jejuni-induced colitis, but the mechanisms that play a central role in resistance to C. jejuni infection have not been explored. Methods We treated Campylobacter jejuni-infected mice with fecal microbiota transplantation (FMT), oral butyric acid and deoxycholic acid in a controlled trial and analyzed the possible mechanisms of treatment by a combination of chromatography, immunohistochemistry, fluorescence in situ hybridization, 16s rRNA gene, proteomics and western blot techniques. Results We first investigated the therapeutic effect of FMT on C. jejuni infection. The results showed that FMT significantly reduced the inflammatory response and blocked the invasion of C.jejuni into the colonic tissue. We observed a significant increase in the abundance of Akkermansia in the colon of mice after FMT, as well as a significant increase in the levels of butyric acid and deoxycholic acid. We next demonstrated that oral administration of sodium butyrate or deoxycholic acid had a similar therapeutic effect. Further proteomic analysis showed that C.jejuni induced colitis mainly through activation of the PI3K-AKT signaling pathway and MAPK signaling pathway, whereas Akkermansia, the core flora of FMT, and the gut microbial metabolites butyric acid and deoxycholic acid both inhibited these signaling pathways to counteract the infection of C. jejuni and alleviate colitis. Finally, we verified the above idea by in vitro cellular assays. In conclusion, FMT is highly effective in the treatment of colitis caused by C. jejuni, with which Akkermansia and butyric and deoxycholic acids are closely associated.The present study demonstrates that Akkermansia and butyric and deoxycholic acids are effective in the treatment of colitis caused by C. jejuni. Discussion This is the first time that Akkermansia has been found to be effective in fighting pathogens, which provides new ideas and insights into the use of FMT to alleviate colitis caused by C. jejuni and Akkermansia as a treatment for intestinal sexually transmitted diseases caused by various pathogens.
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Affiliation(s)
- Lai Jiang
- Key Laboratory of Animal Nutrition and Feed Science, Ministry of Agriculture and Rural Affairs, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Chunchun Yuan
- Key Laboratory of Animal Nutrition and Feed Science, Ministry of Agriculture and Rural Affairs, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Wenxin Ye
- Hainan Institute of Zhejiang University, Sanya, China
| | - Qixin Huang
- Key Laboratory of Animal Nutrition and Feed Science, Ministry of Agriculture and Rural Affairs, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Zhuo Chen
- Hainan Institute of Zhejiang University, Sanya, China
| | - Wenzi Wu
- Hainan Institute of Zhejiang University, Sanya, China
| | - Lichun Qian
- Key Laboratory of Animal Nutrition and Feed Science, Ministry of Agriculture and Rural Affairs, College of Animal Sciences, Zhejiang University, Hangzhou, China,*Correspondence: Lichun Qian,
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Ito M, Tanaka M, Date M, Nagao S, Miura K, Mizuno K. Microbiota in human breast milk: Noninfectious mastitis versus without mastitis. Pediatr Int 2023; 65:e15677. [PMID: 38037424 DOI: 10.1111/ped.15677] [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: 04/17/2023] [Revised: 08/21/2023] [Accepted: 09/11/2023] [Indexed: 12/02/2023]
Abstract
BACKGROUND Long-term breastfeeding is beneficial for both mothers and infants and mastitis is associated with the premature interruption of breastfeeding. Mastitis can be infectious or noninfectious. However, the effect of noninfectious mastitis on milk microbiota is not well-understood. In this study, we aimed to clarify the relationship between noninfectious mastitis and the microbiota by conducting breast milk culture tests. METHODS We compared the milk microbiota between women with noninfectious mastitis and without mastitis. Bacterial cultures were compared in 143 milk samples from January to November 2022, and bacterial diversity was evaluated based on the total number of bacterial species and bacterial species found per specimen. RESULTS Women with noninfectious mastitis provided samples at a significantly later stage postpartum (p < 0.01). The total bacterial count was significantly lower in samples from participants with noninfectious mastitis (p < 0.01). The bacterial diversity of milk from participants with noninfectious mastitis was lower than that without mastitis: nine bacterial species identified in the former and 21 in the latter. The number of Rothia spp. was significantly higher, whereas the number of Staphylococcus aureus, Staphylococcus epidermidis and Pseudomonas fluorescens was significantly lower in samples from women with mastitis. There was no correlation between postpartum week and the number of bacterial species or presence of Rothia spp. CONCLUSIONS Noninfectious mastitis is associated with a decrease in the diversity of human milk microbiota, indicating impaired immune, metabolic, and neuroendocrine development functions in infants. Rothia spp. may also be associated with noninfectious mastitis, suggesting a possible target for future research.
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Affiliation(s)
- Mizuho Ito
- The Nippon Foundation Human Milk Bank, Tokyo, Japan
- School of Medicine, Showa University, Tokyo, Japan
| | - Miori Tanaka
- The Nippon Foundation Human Milk Bank, Tokyo, Japan
| | - Midori Date
- The Nippon Foundation Human Milk Bank, Tokyo, Japan
| | | | - Kumiko Miura
- The Nippon Foundation Human Milk Bank, Tokyo, Japan
| | - Katsumi Mizuno
- The Nippon Foundation Human Milk Bank, Tokyo, Japan
- School of Medicine, Showa University, Tokyo, Japan
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71
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Shin SY, Kim Y, Kim WS, Moon JM, Lee KM, Jung SA, Park H, Huh EY, Kim BC, Lee SC, Choi CH. Compositional changes in fecal microbiota associated with clinical phenotypes and prognosis in Korean patients with inflammatory bowel disease. Intest Res 2023; 21:148-160. [PMID: 35692191 PMCID: PMC9911276 DOI: 10.5217/ir.2021.00168] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 03/10/2022] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND/AIMS The fecal microbiota of Korean patients with inflammatory bowel disease (IBD) was investigated with respect to disease phenotypes and taxonomic biomarkers for diagnosis and prognosis of IBD. METHODS Fecal samples from 70 ulcerative colitis (UC) patients, 39 Crohn's disease (CD) patients, and 100 healthy control individuals (HC) were collected. The fecal samples were amplified via polymerase chain reaction and sequenced using Illumina MiSeq. The relationships between fecal bacteria and clinical phenotypes were analyzed using the EzBioCloud database and 16S microbiome pipeline. RESULTS The alpha-diversity of fecal bacteria was significantly lower in UC and CD (P<0.05) compared to that in HC. Bacterial community compositions in UC and CD were significantly different from that of HC according to Bray-Curtis dissimilarities, and there was also a difference between community composition in UC and CD (P=0.01). In UC, alpha-diversity was further decreased when the disease was more severe and the extent of disease was greater, and community composition significantly differed depending on the extent of the disease. We identified 9 biomarkers of severity and 6 biomarkers of the extent of UC. We also identified 5 biomarkers of active disease and 3 biomarkers of ileocolonic involvement in CD. Lachnospiraceae and Ruminococcus gnavus were biomarkers for better prognosis in CD. CONCLUSIONS The fecal microbiota profiles of IBD patients were different from those of HC, and several bacterial taxa may be used as biomarkers to determine disease phenotypes and prognosis. These data may also help discover new therapeutic targets for IBD.
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Affiliation(s)
- Seung Yong Shin
- Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Young Kim
- Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Won-Seok Kim
- Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jung Min Moon
- Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kang-Moon Lee
- Department of Internal Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Sung-Ae Jung
- Department of Internal Medicine, Graduate Program in System Health Science and Engineering, Ewha Womans University College of Medicine, Seoul, Korea
| | - Hyesook Park
- Department of Preventive Medicine, Graduate Program in System Health Science and Engineering, Ewha Womans University College of Medicine, Seoul, Korea
| | - Eun Young Huh
- South Texas Center of Emerging Infectious Diseases (STCEID) and Department of Molecular Microbiology and Immunology, The University of Texas at San Antonio, San Antonio, TX, USA
| | - Byung Chang Kim
- Division of Gastroenterology, Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Soo Chan Lee
- South Texas Center of Emerging Infectious Diseases (STCEID) and Department of Molecular Microbiology and Immunology, The University of Texas at San Antonio, San Antonio, TX, USA,Co-Correspondence to Soo Chan Lee, South Texas Center of Emerging Infectious Diseases (STCEID), Department of Molecular Microbiology and Immunology, University of Texas at San Antonio, 1 UTSA Circle, San Antonio, TX 78249, USA. Tel: +1-210-458-5398, E-mail:
| | - Chang Hwan Choi
- Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea,Correspondence to Chang Hwan Choi, Department of Internal Medicine, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul 06973, Korea. Tel: +82-2-6299-1418, Fax: +82-2-6299-2064, E-mail:
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72
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Sun R, Chen H, Yao S, Yu Z, Lai C, Huang J. Ecological and dynamic analysis of gut microbiota in the early stage of azomethane-dextran sodium sulfate model in mice. Front Cell Infect Microbiol 2023; 13:1178714. [PMID: 37153156 PMCID: PMC10157258 DOI: 10.3389/fcimb.2023.1178714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 04/05/2023] [Indexed: 05/09/2023] Open
Abstract
The success rate of azomethane-dextran sodium sulfate (AOM-DSS) model in mice has been a long-standing problem. Treatment of AOM and the first round DSS induces acute colitis and is of great significance for the success of AOM-DSS model. In this study, we focused on the role of gut microbiota in the early stage of AOM-DSS model. Few mice with obvious weight loss and high disease-activity score survived from double strike of AOM and the first round DSS. Different ecological dynamics of gut microbiota were observed in AOM-DSS treated mice. Pseudescherichia, Turicibacter, and Clostridium_XVIII were of significance in the model, uncontrolled proliferation of which accompanied with rapid deterioration and death of mice. Akkermansia and Ruthenibacterium were significantly enriched in the alive AOM-DSS treated mice. Decrease of Ligilactobacillus, Lactobacillus, and Limosilactobacillus were observed in AOM-DSS model, but significant drop of these genera could be lethal. Millionella was the only hub genus of gut microbiota network in dead mice, which indicated dysbiosis of the intestinal flora and fragility of microbial network. Our results will provide a better understanding for the role of gut microbiota in the early stage of AOM-DSS model and help improve the success rate of model construction.
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Affiliation(s)
- Ruizheng Sun
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Department of Parasitology, School of Basic Medical Science, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Precise Diagnosis and Treatment of Gastrointestinal Tumor, Xiangya Hospital Central South University, Changsha, Hunan, China
- International Joint Research Center of Minimally Invasive Endoscopic Technology Equipment & Standardization, Changsha, Hunan, China
| | - Hao Chen
- Department of Parasitology, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Siqi Yao
- Department of Parasitology, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Zheng Yu
- Department of Parasitology, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Chen Lai
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Precise Diagnosis and Treatment of Gastrointestinal Tumor, Xiangya Hospital Central South University, Changsha, Hunan, China
- International Joint Research Center of Minimally Invasive Endoscopic Technology Equipment & Standardization, Changsha, Hunan, China
- *Correspondence: Chen Lai, ; Jing Huang,
| | - Jing Huang
- Department of Parasitology, School of Basic Medical Science, Central South University, Changsha, Hunan, China
- *Correspondence: Chen Lai, ; Jing Huang,
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73
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Ganoderma lucidum Ethanol Extraction Promotes Dextran Sulphate Sodium Induced Colitis Recovery and Modulation in Microbiota. Foods 2022; 11:foods11244023. [PMID: 36553765 PMCID: PMC9778072 DOI: 10.3390/foods11244023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 12/03/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
Popular edible mushrooms Ganoderma lucidum and Gloeostereum incarnatum can improve physical health as a prebiotic and positively alter intestinal microbiota. Our research investigated the prebiotic effects of Ganoderma lucidum and Gloeostereum incarnatum on colon inflammation through G. lucidum water extraction polysaccharides (GLP), G. incarnatum water extraction polysaccharides (GIP), G. lucidum ethanol extraction (GLE), and G. incarnatum ethanol extraction (GIE) administered in mice after 7 days of dextran sulphate sodium (DSS) administration. Among the extracts, GLE showed reduced mortality rates, prevention of weight loss, mitigated colon length shortening, and decreased disease activity indices and histological scores. COX-2, MPO, and iNOS activities and the inflammatory cytokines' expressions were determined to demonstrate the inhibition inflammation by GLE. Meanwhile, GLE upregulated the levels of MUC2, ZO-1, claudin-3, and occluding to protect the intestinal barrier. Furthermore, GLE modulated the composition of gut microbiota disturbed by DSS, as it decreased the abundance of Bacteroides, Staphylococcus, and Escherichia_Shigella, and increased Turicibacter and Bifidobacterium. Through cell experiment, GLE had a positive influence on adherens junction, tight junction, and TRAF6/MyD88/NF-κB signaling pathways. In conclusion, GLE supplementation promotes DSS-induced colitis recovery by regulating inflammatory cytokines, preserving the intestinal mucosal barrier, positively modulating microbiota changes, and positively influences immune response in TRAF6/MyD88/NF-κB signaling pathways.
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74
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Lund PJ, Gates LA, Leboeuf M, Smith SA, Chau L, Lopes M, Friedman ES, Saiman Y, Kim MS, Shoffler CA, Petucci C, Allis CD, Wu GD, Garcia BA. Stable isotope tracing in vivo reveals a metabolic bridge linking the microbiota to host histone acetylation. Cell Rep 2022; 41:111809. [PMID: 36516747 PMCID: PMC9994635 DOI: 10.1016/j.celrep.2022.111809] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 03/09/2022] [Accepted: 11/17/2022] [Indexed: 12/14/2022] Open
Abstract
The gut microbiota influences acetylation on host histones by fermenting dietary fiber into butyrate. Although butyrate could promote histone acetylation by inhibiting histone deacetylases, it may also undergo oxidation to acetyl-coenzyme A (CoA), a necessary cofactor for histone acetyltransferases. Here, we find that epithelial cells from germ-free mice harbor a loss of histone H4 acetylation across the genome except at promoter regions. Using stable isotope tracing in vivo with 13C-labeled fiber, we demonstrate that the microbiota supplies carbon for histone acetylation. Subsequent metabolomic profiling revealed hundreds of labeled molecules and supported a microbial contribution to host fatty acid metabolism, which declined in response to colitis and correlated with reduced expression of genes involved in fatty acid oxidation. These results illuminate the flow of carbon from the diet to the host via the microbiota, disruptions to which may affect energy homeostasis in the distal gut and contribute to the development of colitis.
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Affiliation(s)
- Peder J Lund
- Department of Biochemistry and Biophysics, Penn Epigenetics Institute, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Leah A Gates
- Laboratory of Chromatin Biology and Epigenetics, The Rockefeller University, New York, NY 10065, USA
| | - Marylene Leboeuf
- Laboratory of Chromatin Biology and Epigenetics, The Rockefeller University, New York, NY 10065, USA
| | - Sarah A Smith
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Lillian Chau
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Mariana Lopes
- Department of Biochemistry and Biophysics, Penn Epigenetics Institute, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Elliot S Friedman
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yedidya Saiman
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Min Soo Kim
- Metabolomics Core, Penn Cardiovascular Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Clarissa A Shoffler
- Metabolomics Core, Penn Cardiovascular Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Christopher Petucci
- Metabolomics Core, Penn Cardiovascular Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - C David Allis
- Laboratory of Chromatin Biology and Epigenetics, The Rockefeller University, New York, NY 10065, USA
| | - Gary D Wu
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Benjamin A Garcia
- Department of Biochemistry and Biophysics, Penn Epigenetics Institute, University of Pennsylvania, Philadelphia, PA 19104, USA.
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75
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Horvat S, Mahnic A, Makuc D, Pečnik K, Plavec J, Rupnik M. Children gut microbiota exhibits a different composition and metabolic profile after in vitro exposure to Clostridioides difficile and increases its sporulation. Front Microbiol 2022; 13:1042526. [PMID: 36569098 PMCID: PMC9780542 DOI: 10.3389/fmicb.2022.1042526] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 11/17/2022] [Indexed: 12/13/2022] Open
Abstract
Clostridioides difficile (Clostridium difficile) infection (CDI) is one of the main public health concerns in adults, while children under 2 years of age are often colonized asymptomatically. In both adults and children, CDI is strongly associated with disturbances in gut microbiota. In this study, an in-vitro model of children gut microbiota was challenged with vegetative cells or a conditioned media of six different toxigenic C. difficile strains belonging to the ribotypes 027, 078, and 176. In the presence of C. difficile or conditioned medium the children gut microbiota diversity decreased and all main phyla (Bacteroidetes, Firmicutes, and Proteobacteria) were affected. The NMR metabolic spectra divided C. difficile exposed children gut microbiota into three clusters. The grouping correlated with nine metabolites (short chain fatty acids, ethanol, phenolic acids and tyramine). All strains were able to grow in the presence of children gut microbiota and showed a high sporulation rate of up to 57%. This high sporulation rate in combination with high asymptomatic carriage in children could contribute to the understanding of the reported role of children in C. difficile transmissions.
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Affiliation(s)
- Sabina Horvat
- Department of Microbiology, Faculty of Medicine, University of Maribor, Maribor, Slovenia
| | - Aleksander Mahnic
- Department of Microbiology, Faculty of Medicine, University of Maribor, Maribor, Slovenia,Centre for Medical Microbiology, National Laboratory of Health, Environment and Food, Maribor, Slovenia
| | - Damjan Makuc
- Slovenian NMR Centre, National Institute of Chemistry, Ljubljana, Slovenia
| | - Klemen Pečnik
- Slovenian NMR Centre, National Institute of Chemistry, Ljubljana, Slovenia
| | - Janez Plavec
- Slovenian NMR Centre, National Institute of Chemistry, Ljubljana, Slovenia
| | - Maja Rupnik
- Department of Microbiology, Faculty of Medicine, University of Maribor, Maribor, Slovenia,Centre for Medical Microbiology, National Laboratory of Health, Environment and Food, Maribor, Slovenia,*Correspondence: Maja Rupnik,
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Almeida HMDS, Sonalio K, Mechler-Dreibi ML, Petri FAM, Storino GY, Maes D, de Oliveira LG. Experimental Infection with Mycoplasma hyopneumoniae Strain 232 in Swine Influences the Lower Respiratory Microbiota. Vet Sci 2022; 9:vetsci9120674. [PMID: 36548835 PMCID: PMC9788024 DOI: 10.3390/vetsci9120674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/21/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Mycoplasma (M.) hyopneumoniae, the etiological agent of swine enzootic pneumonia, has been reported to increase the susceptibility to secondary infections and modulate the respiratory microbiota in infected pigs. However, no studies have assessed the influence of M. hyopneumoniae on the respiratory microbiota diversity under experimental conditions. Therefore, this study evaluated the impact of M. hyopneumoniae infection on the respiratory microbiota of experimentally infected swine over time. To accomplish this, 12 weaned pigs from a M. hyopneumoniae-free farm were divided into two groups: M. hyopneumoniae strain 232 infected (n = 8) and non-infected (n = 4). The first group received 10 mL of Friis medium containing 107 CCU/mL of M. hyopneumoniae while the control group received 10 mL of sterile Friis medium. Inoculation of both groups was performed intratracheally when the animals were 35 days old (d0). At 28 days post-inoculation (dpi) and 56 dpi, 4 infected animals plus 2 controls were humanely euthanized, and biopsy samples of nasal turbinates (NT) and bronchus-alveolar lavage fluid (BALF) samples were collected. The DNA was extracted from the individual samples, and each group had the samples pooled and submitted to next-generation sequencing. Taxonomic analysis, alpha and beta diversity indexes, weighted unifrac, and unweighted unifrac distances were calculated. A high relative frequency (99%) of M. hyopneumoniae in BALF samples from infected animals was observed with no significant variation between time points. The infection did not seem to alter the diversity and evenness of bacterial communities in NT, thus, M. hyopneumoniae relative frequency was low in NT pools from infected animals (28 dpi-0.83%; 56 dpi-0.89%). PCoA diagrams showed that BALF samples from infected pigs were grouped and far from the control samples, whereas NT from infected animals were not separated from the control. Under the present coditions, M. hyopneumoniae infection influenced the lower respiratory microbiota, which could contribute to the increased susceptibility of infected animals to respiratory infections.
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Affiliation(s)
| | - Karina Sonalio
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paul, Brazil
- Unit of Porcine Health Management, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Marina Lopes Mechler-Dreibi
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paul, Brazil
| | - Fernando Antônio Moreira Petri
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paul, Brazil
| | - Gabriel Yuri Storino
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paul, Brazil
| | - Dominiek Maes
- Unit of Porcine Health Management, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Luís Guilherme de Oliveira
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal 14884-900, São Paul, Brazil
- Correspondence:
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77
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Martinez SS, Stebliankin V, Hernandez J, Martin H, Tamargo J, Rodriguez JB, Teeman C, Johnson A, Seminario L, Campa A, Narasimhan G, Baum MK. Multiomic analysis reveals microbiome-related relationships between cocaine use and metabolites. AIDS 2022; 36:2089-2099. [PMID: 36382433 PMCID: PMC9673179 DOI: 10.1097/qad.0000000000003363] [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] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Over 19 million individuals globally have a cocaine use disorder, a significant public health crisis. Cocaine has also been associated with a pro-inflammatory state and recently with imbalances in the intestinal microbiota as compared to nonuse. The objective of this pilot study was to characterize the gut microbiota and plasma metabolites in people with HIV (PWH) who use cocaine compared with those who do not. DESIGN Cross-sectional study. METHODS A pilot study in PWH was conducted on 25 cocaine users and 25 cocaine nonusers from the Miami Adult Studies on HIV cohort. Stool samples and blood plasma were collected. Bacterial composition was characterized using 16S rRNA sequencing. Metabolomics in plasma were determined using gas and liquid chromatography/mass spectrometry. RESULTS The relative abundances of the Lachnopspira genus, Oscillospira genus, Bifidobacterium adolescentis species, and Euryarchaeota phylum were significantly higher in the cocaine- using PWH compared to cocaine-nonusing PWH. Cocaine-use was associated with higher levels of several metabolites: products of dopamine catabolism (3-methoxytyrosine and 3-methoxytyramine sulfate), phenylacetate, benzoate, butyrate, and butyrylglycine. CONCLUSIONS Cocaine use was associated with higher abundances of taxa and metabolites known to be associated with pathogenic states that include gastrointestinal conditions. Understanding key intestinal bacterial functional pathways that are altered due to cocaine use in PWH will provide a better understanding of the relationships between the host intestinal microbiome and potentially provide novel treatments to improve health.
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Affiliation(s)
| | - Vitalii Stebliankin
- Florida International University, Bioinformatics Research Group (BioRG), Miami, FL, USA
| | - Jacqueline Hernandez
- Florida International University, R. Stempel College of Public Health and Social Work
| | - Haley Martin
- Florida International University, R. Stempel College of Public Health and Social Work
| | - Javier Tamargo
- Florida International University, R. Stempel College of Public Health and Social Work
| | | | - Colby Teeman
- Florida International University, R. Stempel College of Public Health and Social Work
| | - Angelique Johnson
- Florida International University, R. Stempel College of Public Health and Social Work
| | - Leslie Seminario
- Florida International University, R. Stempel College of Public Health and Social Work
| | - Adriana Campa
- Florida International University, R. Stempel College of Public Health and Social Work
| | - Giri Narasimhan
- Florida International University, Bioinformatics Research Group (BioRG), Miami, FL, USA
| | - Marianna K Baum
- Florida International University, R. Stempel College of Public Health and Social Work
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78
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Bruder E, Espéli O. Escherichia coli bacteria associated with Crohn's disease persist within phagolysosomes. Curr Opin Microbiol 2022; 70:102206. [PMID: 36182819 DOI: 10.1016/j.mib.2022.102206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/02/2022] [Accepted: 09/02/2022] [Indexed: 01/25/2023]
Abstract
Crohn's disease (CD) is characterized by an imbalance of intestinal microbiota and a colonization of subepithelial tissues by pathogen and pathobiont bacteria. Adherent invasive Escherichia coli (AIEC) strains recovered from CD lesions survive and multiply within macrophages. Persistence is one of the mechanisms deployed by AIEC to tolerate macrophages' attack. The challenging intracellular environment induces a heterogeneity in AIEC LF82 phenotype, including the presence of nongrowing bacteria. This could provide a reservoir for antibiotic-tolerant bacteria responsible for relapsing infections. In this article, we review the conditions leading to AIEC persistence, the relevance of this state for bacterial survival and disease's etiology, and its implication for therapeutic strategies.
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Affiliation(s)
- Emma Bruder
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, University PSL, Paris, France
| | - Olivier Espéli
- Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, University PSL, Paris, France.
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Zhao C, Hu X, Bao L, Wu K, Zhao Y, Xiang K, Li S, Wang Y, Qiu M, Feng L, Meng X, Zhang N, Fu Y. Gut dysbiosis induces the development of mastitis through a reduction in host anti-inflammatory enzyme activity by endotoxemia. MICROBIOME 2022; 10:205. [PMID: 36451232 PMCID: PMC9714159 DOI: 10.1186/s40168-022-01402-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 10/24/2022] [Indexed: 05/26/2023]
Abstract
BACKGROUND Mounting experimental evidence has shown that the gut microbiota plays a significant role in the pathogenesis of mastitis, and clinical investigations have found that the occurrence of mastitis is correlated with ruminal dysbiosis. However, the underlying mechanism by which the ruminal microbiota participates in the development of mastitis remains unknown. RESULTS In the present study, we found that cows with clinical mastitis had marked systemic inflammation, which was associated with significant ruminal dysbiosis, especially enriched Proteobacteria in the rumen. Ruminal microbiota transplantation from mastitis cows (M-RMT) to mice induced mastitis symptoms in recipient mice along with increased mammary proinflammatory signature activation of the TLR4-cGAS-STING-NF-κB/NLRP3 pathways. M-RMT also induced mucosal inflammation and impaired intestinal barrier integrity, leading to increased endotoxemia and systemic inflammation. Moreover, we showed that M-RMT mirrored ruminal microbiota disruption in the gut of recipient mice, as evidenced by enriched Proteobacteria and similar bacterial functions, which were correlated with most proinflammatory parameters and serum lipopolysaccharide (LPS) levels in mice. Recurrent low-grade LPS treatment mirrored gut dysbiosis-induced endotoxemia and caused severe mastitis in mice. Furthermore, we found that gut dysbiosis-derived LPS reduced host alkaline phosphatase activity by activating neuraminidase (Neu), which facilitates low-grade LPS exposure and E. coli-induced mastitis in mice. Conversely, treatment with calf intestinal alkaline phosphatase or the Neu inhibitor zanamivir alleviated low-grade LPS exposure and E. coli-induced mastitis in mice. CONCLUSIONS Our results suggest that ruminal dysbiosis-derived low-grade endotoxemia can cause mastitis and aggravate pathogen-induced mastitis by impairing host anti-inflammatory enzymes, which implies that regulating the ruminal or gut microbiota to prevent low-grade systemic inflammation is a potential strategy for mastitis intervention. Video Abstract.
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Affiliation(s)
- Caijun Zhao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Xiaoyu Hu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Lijuan Bao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Keyi Wu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Yihong Zhao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Kaihe Xiang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Shuang Li
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Ying Wang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Min Qiu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Lianjun Feng
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Xiangyue Meng
- Department of Breast Center, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Naisheng Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China
| | - Yunhe Fu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, 130062, Jilin Province, China.
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80
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Taylor SJ, Winter MG, Gillis CC, Silva LAD, Dobbins AL, Muramatsu MK, Jimenez AG, Chanin RB, Spiga L, Llano EM, Rojas VK, Kim J, Santos RL, Zhu W, Winter SE. Colonocyte-derived lactate promotes E. coli fitness in the context of inflammation-associated gut microbiota dysbiosis. MICROBIOME 2022; 10:200. [PMID: 36434690 PMCID: PMC9701030 DOI: 10.1186/s40168-022-01389-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 10/12/2022] [Indexed: 05/09/2023]
Abstract
BACKGROUND Intestinal inflammation disrupts the microbiota composition leading to an expansion of Enterobacteriaceae family members (dysbiosis). Associated with this shift in microbiota composition is a profound change in the metabolic landscape of the intestine. It is unclear how changes in metabolite availability during gut inflammation impact microbial and host physiology. RESULTS We investigated microbial and host lactate metabolism in murine models of infectious and non-infectious colitis. During inflammation-associated dysbiosis, lactate levels in the gut lumen increased. The disease-associated spike in lactate availability was significantly reduced in mice lacking the lactate dehydrogenase A subunit in intestinal epithelial cells. Commensal E. coli and pathogenic Salmonella, representative Enterobacteriaceae family members, utilized lactate via the respiratory L-lactate dehydrogenase LldD to increase fitness. Furthermore, mice lacking the lactate dehydrogenase A subunit in intestinal epithelial cells exhibited lower levels of inflammation in a model of non-infectious colitis. CONCLUSIONS The release of lactate by intestinal epithelial cells during gut inflammation impacts the metabolism of gut-associated microbial communities. These findings suggest that during intestinal inflammation and dysbiosis, changes in metabolite availability can perpetuate colitis-associated disturbances of microbiota composition. Video Abstract.
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Affiliation(s)
- Savannah J Taylor
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Maria G Winter
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Present Address: Department of Internal Medicine, Division of Infectious Diseases, UC Davis Health, Davis, CA, 95616, USA
| | - Caroline C Gillis
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Present Address: Novome Biotechnologies, South San Francisco, CA, 94080, USA
| | - Laice Alves da Silva
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270, Brazil
| | - Amanda L Dobbins
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Matthew K Muramatsu
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Present Address: Department of Internal Medicine, Division of Infectious Diseases, UC Davis Health, Davis, CA, 95616, USA
| | - Angel G Jimenez
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Present Address: Infectious Diseases, Genentech, South San Francisco, CA, 94080, USA
| | - Rachael B Chanin
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Present Address: Department of Medicine, Hematology, Blood and Marrow Transplantation, Stanford University, Stanford, CA, USA
| | - Luisella Spiga
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, USA
| | - Ernesto M Llano
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Vivian K Rojas
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Present Address: Department of Internal Medicine, Division of Infectious Diseases, UC Davis Health, Davis, CA, 95616, USA
| | - Jiwoong Kim
- Department of Population and Data Sciences, UT Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Renato L Santos
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270, Brazil
| | - Wenhan Zhu
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, USA
| | - Sebastian E Winter
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
- Present Address: Department of Internal Medicine, Division of Infectious Diseases, UC Davis Health, Davis, CA, 95616, USA.
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81
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ILCs-Crucial Players in Enteric Infectious Diseases. Int J Mol Sci 2022; 23:ijms232214200. [PMID: 36430676 PMCID: PMC9695539 DOI: 10.3390/ijms232214200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 11/12/2022] [Indexed: 11/18/2022] Open
Abstract
Research of the last decade has remarkably increased our understanding of innate lymphoid cells (ILCs). ILCs, in analogy to T helper (Th) cells and their cytokine and transcription factor profile, are categorized into three distinct populations: ILC1s express the transcription factor T-bet and secrete IFNγ, ILC2s depend on the expression of GATA-3 and release IL-5 and IL-13, and ILC3s express RORγt and secrete IL-17 and IL-22. Noteworthy, ILCs maintain a level of plasticity, depending on exposed cytokines and environmental stimuli. Furthermore, ILCs are tissue resident cells primarily localized at common entry points for pathogens such as the gut-associated lymphoid tissue (GALT). They have the unique capacity to initiate rapid responses against pathogens, provoked by changes of the cytokine profile of the respective tissue. Moreover, they regulate tissue inflammation and homeostasis. In case of intracellular pathogens entering the mucosal tissue, ILC1s respond by secreting cytokines (e.g., IFNγ) to limit the pathogen spread. Upon infection with helminths, intestinal epithelial cells produce alarmins (e.g., IL-25) and activate ILC2s to secrete IL-13, which induces differentiation of intestinal stem cells into tuft and goblet cells, important for parasite expulsion. Additionally, during bacterial infection ILC3-derived IL-22 is required for bacterial clearance by regulating antimicrobial gene expression in epithelial cells. Thus, ILCs can limit infectious diseases via secretion of inflammatory mediators and interaction with other cell types. In this review, we will address the role of ILCs during enteric infectious diseases.
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82
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Zhang J, Xie Q, Huo X, Liu Z, Da M, Yuan M, Zhao Y, Shen G. Impact of intestinal dysbiosis on breast cancer metastasis and progression. Front Oncol 2022; 12:1037831. [PMID: 36419880 PMCID: PMC9678367 DOI: 10.3389/fonc.2022.1037831] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 10/19/2022] [Indexed: 07/30/2023] Open
Abstract
Breast cancer has a high mortality rate among malignant tumors, with metastases identified as the main cause of the high mortality. Dysbiosis of the gut microbiota has become a key factor in the development, treatment, and prognosis of breast cancer. The many microorganisms that make up the gut flora have a symbiotic relationship with their host and, through the regulation of host immune responses and metabolic pathways, are involved in important physiologic activities in the human body, posing a significant risk to health. In this review, we build on the interactions between breast tissue (including tumor tissue, tissue adjacent to the tumor, and samples from healthy women) and the microbiota, then explore factors associated with metastatic breast cancer and dysbiosis of the gut flora from multiple perspectives, including enterotoxigenic Bacteroides fragilis, antibiotic use, changes in gut microbial metabolites, changes in the balance of the probiotic environment and diet. These factors highlight the existence of a complex relationship between host-breast cancer progression-gut flora. Suggesting that gut flora dysbiosis may be a host-intrinsic factor affecting breast cancer metastasis and progression not only informs our understanding of the role of microbiota dysbiosis in breast cancer development and metastasis, but also the importance of balancing gut flora dysbiosis and clinical practice.
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Affiliation(s)
| | | | | | | | | | | | | | - Guoshuang Shen
- Affiliated Hospital of Qinghai University, Affiliated Cancer Hospital of Qinghai University, Xining, China
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83
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Wild-type and cancer-prone zebrafish exhibit distinct gut microbial diversity and differential anti-inflammatory response upon infection. J Biosci 2022. [DOI: 10.1007/s12038-022-00302-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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84
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Fodor CC, Fouhse J, Drouin D, Ma T, Willing BP, Guan LL, Cobo ER. Colonic innate immune defenses and microbiota alterations in acute swine dysentery. Microb Pathog 2022; 173:105873. [DOI: 10.1016/j.micpath.2022.105873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/04/2022] [Accepted: 11/05/2022] [Indexed: 11/11/2022]
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85
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Zhao C, Bao L, Qiu M, Wu K, Zhao Y, Feng L, Xiang K, Zhang N, Hu X, Fu Y. Commensal cow Roseburia reduces gut-dysbiosis-induced mastitis through inhibiting bacterial translocation by producing butyrate in mice. Cell Rep 2022; 41:111681. [DOI: 10.1016/j.celrep.2022.111681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/17/2022] [Accepted: 10/26/2022] [Indexed: 11/23/2022] Open
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86
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Martinez E, Rodriguez C, Crèvecoeur S, Lebrun S, Delcenserie V, Taminiau B, Daube G. Impact of environmental conditions and gut microbiota on the in vitro germination and growth of Clostridioides difficile. FEMS Microbiol Lett 2022; 369:6692865. [PMID: 36066913 DOI: 10.1093/femsle/fnac087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 08/09/2022] [Accepted: 09/01/2022] [Indexed: 12/13/2022] Open
Abstract
Clostridioides difficile is a spore-forming anaerobic Gram-positive bacterium responsible for a broad spectrum of intestinal symptoms and healthcare-associated diarrhoea. The hypothesis of this work was that different in vitro conditions, notably pH and human faecal microbiota composition, impact the germination and/or the growth of C. difficile. This study aimed to correlate growth kinetics of the bacterium with these two physiochemical parameters by using a static in vitro model. To better understand the initial gut colonisation, several growth curve assays were carried out to monitor the behaviour of the spores and vegetative forms of C. difficile strain 078 under different conditions mimicking the gut environment. When the faeces were added, no spore germination or growth was observed, but C. difficile spores germinated in vitro when the pH was maintained between 6.6 and 6.9 for four different faeces donors. The evolution of microbiota studied by 16S rDNA profiling showed high proportions of Enterobacteriaceae and E. coli/Shigella when C. difficile grew, regardless of the inoculated faeces. This model helped us to understand that the germination and growth of C. difficile are strongly pH dependent, and further research is needed to evaluate the potential impact of the gut microbiota composition on C. difficile.
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Affiliation(s)
- Elisa Martinez
- Fundamental and Applied Research for Animals & Health (FARAH), Faculté de Médecine Vétérinaire, Département des Sciences des Denrées alimentaires, Université de Liège, Avenue de Cureghem 10, 4000 Liège, Belgique
| | - Cristina Rodriguez
- Instituto de Investigación Biomédica de Málaga-IBIMA. Málaga, Spain. Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, Málaga, 29590, Spain
| | - Sébastien Crèvecoeur
- Fundamental and Applied Research for Animals & Health (FARAH), Faculté de Médecine Vétérinaire, Département des Sciences des Denrées alimentaires, Université de Liège, Avenue de Cureghem 10, 4000 Liège, Belgique
| | - Sarah Lebrun
- Fundamental and Applied Research for Animals & Health (FARAH), Faculté de Médecine Vétérinaire, Département des Sciences des Denrées alimentaires, Université de Liège, Avenue de Cureghem 10, 4000 Liège, Belgique
| | - Véronique Delcenserie
- Fundamental and Applied Research for Animals & Health (FARAH), Faculté de Médecine Vétérinaire, Département des Sciences des Denrées alimentaires, Université de Liège, Avenue de Cureghem 10, 4000 Liège, Belgique
| | - Bernard Taminiau
- Fundamental and Applied Research for Animals & Health (FARAH), Faculté de Médecine Vétérinaire, Département des Sciences des Denrées alimentaires, Université de Liège, Avenue de Cureghem 10, 4000 Liège, Belgique
| | - Georges Daube
- Fundamental and Applied Research for Animals & Health (FARAH), Faculté de Médecine Vétérinaire, Département des Sciences des Denrées alimentaires, Université de Liège, Avenue de Cureghem 10, 4000 Liège, Belgique
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87
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Gerner RR, Hossain S, Sargun A, Siada K, Norton GJ, Zheng T, Neumann W, Nuccio SP, Nolan EM, Raffatellu M. Siderophore Immunization Restricted Colonization of Adherent-Invasive Escherichia coli and Ameliorated Experimental Colitis. mBio 2022; 13:e0218422. [PMID: 36094114 PMCID: PMC9600343 DOI: 10.1128/mbio.02184-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 08/03/2022] [Indexed: 11/20/2022] Open
Abstract
Inflammatory bowel diseases (IBD) are characterized by chronic inflammation of the gastrointestinal tract and profound alterations to the gut microbiome. Adherent-invasive Escherichia coli (AIEC) is a mucosa-associated pathobiont that colonizes the gut of patients with Crohn's disease, a form of IBD. Because AIEC exacerbates gut inflammation, strategies to reduce the AIEC bloom during colitis are highly desirable. To thrive in the inflamed gut, Enterobacteriaceae acquire the essential metal nutrient iron by producing and releasing siderophores. Here, we implemented an immunization-based strategy to target the siderophores enterobactin and its glucosylated derivative salmochelin to reduce the AIEC bloom in the inflamed gut. Using chemical (dextran sulfate sodium) and genetic (Il10-/- mice) IBD mouse models, we showed that immunization with enterobactin conjugated to the mucosal adjuvant cholera toxin subunit B potently elicited mucosal and serum antibodies against these siderophores. Siderophore-immunized mice exhibited lower AIEC gut colonization, diminished AIEC association with the gut mucosa, and reduced colitis severity. Moreover, Peyer's patches and the colonic lamina propria harbored enterobactin-specific B cells that could be identified by flow cytometry. The beneficial effect of siderophore immunization was primarily B cell-dependent because immunized muMT-/- mice, which lack mature B lymphocytes, were not protected during AIEC infection. Collectively, our study identified siderophores as a potential therapeutic target to reduce AIEC colonization and its association with the gut mucosa, which ultimately may reduce colitis exacerbation. Moreover, this work provides the foundation for developing monoclonal antibodies against siderophores, which could provide a narrow-spectrum strategy to target the AIEC bloom in Crohn's disease patients. IMPORTANCE Adherent-invasive Escherichia coli (AIEC) is abnormally prevalent in patients with ileal Crohn's disease and exacerbates intestinal inflammation, but treatment strategies that selectively target AIEC are unavailable. Iron is an essential micronutrient for most living organisms, and bacterial pathogens have evolved sophisticated strategies to capture iron from the host environment. AIEC produces siderophores, small, secreted molecules with a high affinity for iron. Here, we showed that immunization to elicit antibodies against siderophores promoted a reduction of the AIEC bloom, interfered with AIEC association with the mucosa, and mitigated colitis in experimental mouse models. We also established a flow cytometry-based approach to visualize and isolate siderophore-specific B cells, a prerequisite for engineering monoclonal antibodies against these molecules. Together, this work could lead to a more selective and antibiotic-sparing strategy to target AIEC in Crohn's disease patients.
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Affiliation(s)
- Romana R. Gerner
- Department of Pediatrics, Division of Host-Microbe Systems and Therapeutics, University of California San Diego, La Jolla, California, USA
| | - Suzana Hossain
- Department of Pediatrics, Division of Host-Microbe Systems and Therapeutics, University of California San Diego, La Jolla, California, USA
| | - Artur Sargun
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Kareem Siada
- Department of Pediatrics, Division of Host-Microbe Systems and Therapeutics, University of California San Diego, La Jolla, California, USA
| | - Grant J. Norton
- Department of Pediatrics, Division of Host-Microbe Systems and Therapeutics, University of California San Diego, La Jolla, California, USA
| | - Tengfei Zheng
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Wilma Neumann
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Sean-Paul Nuccio
- Department of Pediatrics, Division of Host-Microbe Systems and Therapeutics, University of California San Diego, La Jolla, California, USA
| | - Elizabeth M. Nolan
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Manuela Raffatellu
- Department of Pediatrics, Division of Host-Microbe Systems and Therapeutics, University of California San Diego, La Jolla, California, USA
- Center for Microbiome Innovation, University of California San Diego, La Jolla, California, USA
- Chiba University-University of California-San Diego Center for Mucosal Immunology, Allergy, and Vaccines (CU-UCSD cMAV), La Jolla, California, USA
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88
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Sukjoi C, Buddhasiri S, Tantibhadrasapa A, Kaewsakhorn T, Phothaworn P, Nale JY, Lopez-Garcia AV, AbuOun M, Anjum MF, Malik DJ, Galyov EE, Clokie MRJ, Korbsrisate S, Thiennimitr P. Therapeutic effects of oral administration of lytic Salmonella phages in a mouse model of non-typhoidal salmonellosis. Front Microbiol 2022; 13:955136. [DOI: 10.3389/fmicb.2022.955136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 09/23/2022] [Indexed: 11/13/2022] Open
Abstract
Acute non-typhoidal salmonellosis (NTS) caused by a Gram-negative bacterium Salmonella enterica serovar Typhimurium (S. Tm) is one of the most common bacterial foodborne diseases worldwide. Bacteriophages (phages) can specifically target and lyse their host bacteria, including the multidrug-resistant strains, without collateral damage to other bacteria in the community. However, the therapeutic use of Salmonella phages in vivo is still poorly investigated. Salmonella phages ST-W77 and SE-W109 have previously been shown by our group to be useful for biocontrol properties. Here, we tested whether phages ST-W77 and SE-W109 can reduce Salmonella invasion into cultured human cells and confer a therapeutic benefit for acute NTS in a mammalian host. Human colonocytes, T84 cells, were treated with phages ST-W77, SE-W109, and its combination for 5 min before S. Tm infection. Gentamicin protection assays demonstrated that ST-W77 and SE-W109 significantly reduced S. Tm invasion and inflammatory response in human colonocytes. Next, streptomycin-pretreated mice were orally infected with S. Tm (108 CFU/mouse) and treated with a single or a combination of ST-W77 and SE-W109 (1010 PFU/mouse for 4 days) by oral feeding. Our data showed that phage-treated mice had lower S. Tm numbers and tissue inflammation compared to the untreated mice. Our study also revealed that ST-W77 and SE-W109 persist in the mouse gut lumen, but not in systemic sites. Together, these data suggested that Salmonella phages ST-W77 and SE-W109 could be further developed as an alternative approach for treating an acute NTS in mammalian hosts.
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89
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Khorsand B, Asadzadeh Aghdaei H, Nazemalhosseini-Mojarad E, Nadalian B, Nadalian B, Houri H. Overrepresentation of Enterobacteriaceae and Escherichia coli is the major gut microbiome signature in Crohn’s disease and ulcerative colitis; a comprehensive metagenomic analysis of IBDMDB datasets. Front Cell Infect Microbiol 2022; 12:1015890. [PMID: 36268225 PMCID: PMC9577114 DOI: 10.3389/fcimb.2022.1015890] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 09/20/2022] [Indexed: 11/28/2022] Open
Abstract
Objectives A number of converging strands of research suggest that the intestinal Enterobacteriaceae plays a crucial role in the development and progression of inflammatory bowel disease (IBD), however, the changes in the abundance of Enterobacteriaceae species and their related metabolic pathways in Crohn’s disease (CD) and ulcerative colitis (UC) compared to healthy people are not fully explained by comprehensive comparative metagenomics analysis. In the current study, we investigated the alternations of the Enterobacterales population in the gut microbiome of patients with CD and UC compared to healthy subjects. Methods Metagenomic datasets were selected from the Integrative Human Microbiome Project (HMP2) through the Inflammatory Bowel Disease Multi’omics Database (IBDMDB). We performed metagenome-wide association studies on fecal samples from 191 CD patients, 132 UC patients, and 125 healthy controls (HCs). We used the metagenomics dataset to study bacterial community structure, relative abundance, differentially abundant bacteria, functional analysis, and Enterobacteriaceae-related biosynthetic pathways. Results Compared to the gut microbiome of HCs, six Enterobacteriaceae species were significantly elevated in both CD and UC patients, including Escherichia coli, Klebsiella variicola, Klebsiella quasipneumoniae, Klebsiella pneumoniae, Proteus mirabilis, Citrobacter freundii, and Citrobacter youngae, while Klebsiella oxytoca, Morganella morganii, and Citrobacter amalonaticus were uniquely differentially abundant and enriched in the CD cohort. Four species were uniquely differentially abundant and enriched in the UC cohort, including Citrobacter portucalensis, Citrobacter pasteurii, Citrobacter werkmanii, and Proteus hauseri. Our analysis also showed a dramatically increased abundance of E. coli in their intestinal bacterial community. Biosynthetic pathways of aerobactin siderophore, LPS, enterobacterial common antigen, nitrogen metabolism, and sulfur relay systems encoded by E. coli were significantly elevated in the CD samples compared to the HCs. Menaquinol biosynthetic pathways were associated with UC that belonged to K. pneumoniae strains. Conclusions In conclusion, compared with healthy people, the taxonomic and functional composition of intestinal bacteria in CD and UC patients was significantly shifted to Enterobacteriaceae species, mainly E. coli and Klebsiella species.
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Affiliation(s)
- Babak Khorsand
- Gastroenterology and Liver Disease Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Asadzadeh Aghdaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ehsan Nazemalhosseini-Mojarad
- Gastroenterology and Liver Disease Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bahareh Nadalian
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Banafsheh Nadalian
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamidreza Houri
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- *Correspondence: Hamidreza Houri,
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Zhang J, Liang F, Chen Z, Chen Y, Yuan J, Xiong Q, Hou S, Huang S, Liu C, Liang J. Vitexin Protects against Dextran Sodium Sulfate-Induced Colitis in Mice and Its Potential Mechanisms. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:12041-12054. [PMID: 36124900 DOI: 10.1021/acs.jafc.2c05177] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Vitexin, one of the major active components in hawthorn, has been shown to possess multiple pharmacological activities. Here, we sought to investigate the effect of vitexin on an ameliorating dextran sodium sulfate (DSS)-induced ulcerative colitis (UC) mouse model and further explored its potential mechanism. The results indicated that vitexin administration could significantly alleviate the signs of colitis via suppressing body weight loss, reducing disease activity index (DAI) score, and mitigating colonic damage. Also, vitexin treatment in colitis mice markedly inhibited the production of pro-inflammation cytokines (such as IL-1β, IL-6, and TNF-α). Meanwhile, vitexin also could markedly down-regulate the phosphorylation levels of p65, IκB, and STAT1. Moreover, vitexin also dose-dependently increased the expressions of muc-2, ZO-1, and occludin proteins in colonic tissues of colitis mice. Further studies revealed that vitexin dramatically modulated the disturbed intestinal flora in colitis mice. Vitexin is beneficial for regulating abundances of some certain bacteria, such as Bacteroides, Helicobacter, Alistipes, Lachnospiraceae_NK4A136_group, and Lachnospiraceae_UCG-006. Interestingly, the correlation analysis indicated that key microbes were strongly correlated with colitis features, such as pro-inflammatory cytokines and gut barrier. Collectively, these results demonstrated that vitexin treatment alleviated inflammation, intestinal barrier dysfunction, and intestinal flora dysbiosis in colitis mice. Vitexin is expected to be a promising compound for UC treatment.
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Affiliation(s)
- Jing Zhang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Feilin Liang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Zongwen Chen
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
- Gaozhou Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of Chinese Medicine, Gaozhou, Guangdong 510006, China
| | - Yonger Chen
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Jun Yuan
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Qingping Xiong
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Shaozhen Hou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Song Huang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
- Dongguan Institute of Guangzhou University of Chinese Medicine, Dongguan, Guangdong 510006, China
| | - Changhui Liu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Jian Liang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, China
- Dongguan Institute of Guangzhou University of Chinese Medicine, Dongguan, Guangdong 510006, China
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91
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Fei H, Cheng Y, Zhang H, Yu X, Yi S, Huang M, Yang S. Effect of Autolyzed Yarrowia lipolytica on the Growth Performance, Antioxidant Capacity, Intestinal Histology, Microbiota, and Transcriptome Profile of Juvenile Largemouth Bass (Micropterus salmoides). Int J Mol Sci 2022; 23:ijms231810780. [PMID: 36142687 PMCID: PMC9503160 DOI: 10.3390/ijms231810780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/13/2022] [Accepted: 09/13/2022] [Indexed: 12/03/2022] Open
Abstract
The improper components of formulated feed can cause the intestinal dysbiosis of juvenile largemouth bass and further affect fish health. A 28 day feeding trial was conducted to investigate the effect of partially replacing fish meal (FM) with autolyzed Yarrowia lipolytica (YL) on juvenile largemouth bass (Micropterus salmoides). We considered four diets—control, YL25, YL50, and YL75—in which 0%, 25%, 50%, and 75% of the FM content, respectively, was replaced with YL. According to results, the weight gain rate (WGR) and specific growth rate (SGR) of the fish with the YL25 and YL50 diets were significantly higher than the WGR and SGR with the control diet, while the YL75 diet significantly reduced fish growth and antioxidant enzymes activities, and shortened the villus height in the intestinal mucosa. The 16S rRNA analysis of the intestinal microbiota showed that the relative abundance of Mycoplasma was significantly increased with the YL25 and YL50 diets, while the Enterobacteriacea content was increased with the YL75 diet. Moreover, our transcriptome analysis revealed that certain differentially expressed genes (DEGs) that are associated with growth, metabolism, and immunity were modulated by YL inclusion treatment. Dietary YL25 and YL50 significantly reduced the mRNA level of ERBB receptor feedback inhibitor 1 (errfi1) and dual-specificity phosphatases (dusp), while the expression of the suppressor of cytokine signaling 1 (socs1), the transporter associated with antigen processing 2 subunit type a (tap2a), and the major histocompatibility complex class I-related gene (MHC-I-l) were sharply increased with YL75 treatment. We determined that the optimum dose of dietary YL required for maximum growth without any adverse influence on intestinal health was 189.82 g/kg (with 31.63% of the fishmeal replaced by YL), while an excessive substitution of YL for fishmeal led to suppressed growth and antioxidant capacity, as well as intestinal damage for juvenile largemouth bass.
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Affiliation(s)
- Hui Fei
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yan Cheng
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Huimin Zhang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xiang Yu
- Zhejiang Development &Planning Institute, Hangzhou 310012, China
| | - Shunfa Yi
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Mengmeng Huang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Shun Yang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
- Correspondence: ; Tel.: +86-0571-8684-3199
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92
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Simulated Colonic Fluid Replicates the In Vivo Growth Capabilities of Citrobacter rodentium cpxRA Mutants and Uncovers Additive Effects of Cpx-Regulated Genes on Fitness. Infect Immun 2022; 90:e0031422. [PMID: 36000875 PMCID: PMC9476912 DOI: 10.1128/iai.00314-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Citrobacter rodentium is an attaching and effacing (A/E) pathogen used to model enteropathogenic and enterohemorrhagic Escherichia coli infections in mice. During colonization, C. rodentium must adapt to stresses in the gastrointestinal tract, such as antimicrobial peptides, pH changes, and bile salts. The Cpx envelope stress response (ESR) is a two-component system used by some bacteria to remediate stress by modulating gene expression, and it is necessary for C. rodentium pathogenesis in mice. Here, we utilized simulated colonic fluid (SCF) to mimic the gastrointestinal environment, which we show strongly induces the Cpx ESR and highlights a fitness defect specific to the ΔcpxRA mutant. While investigating genes in the Cpx regulon that may contribute to C. rodentium pathogenesis, we found that the absence of the Cpx ESR resulted in higher expression of the locus of enterocyte effacement (LEE) master regulator, ler, and that the genes yebE, ygiB, bssR, and htpX relied on CpxRA for proper expression. We then determined that CpxRA and select gene mutants were essential for proper growth in SCF when in the presence of extraneous stressors and in competition. Although none of the Cpx-regulated gene mutants exhibited marked virulence phenotypes in vivo, the ΔcpxRA mutant had reduced colonization and attenuated virulence, as previously determined, which replicated the in vitro growth phenotypes specific to SCF. Overall, these results indicate that the ΔcpxRA virulence defect is not due to any single Cpx regulon gene examined. Instead, attenuation may be the result of defective growth in the colonic environment resulting from the collective impact of multiple Cpx-regulated genes.
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93
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Clerbaux LA, Fillipovska J, Muñoz A, Petrillo M, Coecke S, Amorim MJ, Grenga L. Mechanisms Leading to Gut Dysbiosis in COVID-19: Current Evidence and Uncertainties Based on Adverse Outcome Pathways. J Clin Med 2022; 11:5400. [PMID: 36143044 PMCID: PMC9505288 DOI: 10.3390/jcm11185400] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/24/2022] [Accepted: 09/09/2022] [Indexed: 02/06/2023] Open
Abstract
Alteration in gut microbiota has been associated with COVID-19. However, the underlying mechanisms remain poorly understood. Here, we outlined three potential interconnected mechanistic pathways leading to gut dysbiosis as an adverse outcome following SARS-CoV-2 presence in the gastrointestinal tract. Evidence from the literature and current uncertainties are reported for each step of the different pathways. One pathway investigates evidence that intestinal infection by SARS-CoV-2 inducing intestinal inflammation alters the gut microbiota. Another pathway links the binding of viral S protein to angiotensin-converting enzyme 2 (ACE2) to the dysregulation of this receptor, essential in intestinal homeostasis-notably for amino acid metabolism-leading to gut dysbiosis. Additionally, SARS-CoV-2 could induce gut dysbiosis by infecting intestinal bacteria. Assessing current evidence within the Adverse Outcome Pathway framework justifies confidence in the proposed mechanisms to support disease management and permits the identification of inconsistencies and knowledge gaps to orient further research.
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Affiliation(s)
| | | | - Amalia Muñoz
- European Commission, Joint Research Centre (JRC), 2440 Geel, Belgium
| | | | - Sandra Coecke
- European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy
| | - Maria-Joao Amorim
- Instituto Gulbenkian de Ciência, 2780-156 Oerias, Portugal
- Católica Medical School, Católica Biomedical Research Centre, Universidade Católica Portuguesa, 1649-023 Lisbon, Portugal
| | - Lucia Grenga
- Département Médicaments et Technologies pour la Santé, Commissariat à l’Énergie Atomique et Aux Énergies Alternatives (CEA), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université Paris-Saclay, 30200 Bagnols-sur-Cèze, France
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94
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Dynamic Population of Gut Microbiota as an Indicator of Inflammatory Bowel Disease. IRANIAN BIOMEDICAL JOURNAL 2022; 26:350-6. [PMID: 36403100 PMCID: PMC9763879 DOI: 10.52547/ibj.3772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background Inflammatory bowel disease is a chronic inflammatory disease of the gastrointestinal tract. The gut microbiota is an important factor in the pathogenesis of inflammatory bowel disease (IBD). Due to a link between the gut microbiota and IBD, studying microbiota changes using an accurate, sensitive and rapid method for detection of the disease seems necessary. This study aimed to compare the composition of gut microbiota in three groups of people, including IBD patients, cured Inflammatory bowel disease (CIBD), and healthy groups. Methods For this study, 45 stool samples (15 from each group) were collected. Using real-time PCR, the abundance of 11 bacterial 16S rRNA gene sequences was examined. Results In the IBD group, the number of three bacterial phyla, including Firmicutes, Actinobacteria, and Bacteroidetes, decreased (p < 0.01, p < 0.01, and p < 0.001, respectively), while the population of γ-Proteobacteria increased significantly (p < 0.0001). In the CIBD group, the number of Actinobacteria enhanced (p < 0.01), but that of Bacteroidetes and Firmicutes decreased (p < 0.01, and p < 0.05, respectively). Conclusion Findings of this study indicate that decrease in Firmicutes and increase in γ-Proteobacteria could be used as an indicator of IBD instead of employing invasive and costly detection methods such as colonoscopy and other tests.
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95
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Effect of Probiotics on Host-Microbiota in Bacterial Infections. Pathogens 2022; 11:pathogens11090986. [PMID: 36145418 PMCID: PMC9500725 DOI: 10.3390/pathogens11090986] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/18/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022] Open
Abstract
Diseases caused by bacteria cause millions of deaths every year. In addition, the problem of resistance to antibiotics is so serious that it threatens the achievements of modern medicine. This is a very important global problem as some bacteria can also develop persistence. Indeed, the persistence of pathogenic bacteria has evolved as a potent survival strategy to overcome host organisms’ defense mechanisms. Additionally, chronic or persistent infections may be caused by persisters which could facilitate antibiotic resistance. Probiotics are considered good bacteria. It has been described that the modulation of gut microbiota by probiotics could have a great potential to counteract the deleterious impact and/or regulate gut microbiota after bacterial infection. Probiotics might provide health benefits through the inhibition of pathogen growth or the replacement of pathogenic bacteria. Bearing in mind that current strategies to avoid bacterial persistence and prevent antibiotic resistance are not effective, other strategies need to be assessed. We have carried out a comprehensive review, which included the reported literature between 2016 and 2021, highlighting the clinical trials that reported the probiotics’ potential to regulate gut microbiota after bacterial infection and focusing in particular on the context of antibiotic resistance and persister cells.
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96
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Rajarajan A, Wolinska J, Walser JC, Mäder M, Spaak P. Infection by a eukaryotic gut parasite in wild Daphnia sp. associates with a distinct bacterial community. FEMS Microbiol Ecol 2022; 98:6677393. [PMID: 36026529 PMCID: PMC9869925 DOI: 10.1093/femsec/fiac097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 07/04/2022] [Accepted: 08/23/2022] [Indexed: 01/26/2023] Open
Abstract
Host-associated bacterial communities play an important role in host fitness and resistance to diseases. Yet, few studies have investigated tripartite interaction between a host, parasite and host-associated bacterial communities in natural settings. Here, we use 16S rRNA gene amplicon sequencing to compare gut- and body- bacterial communities of wild water fleas belonging to the Daphnia longispina complex, between uninfected hosts and those infected with the common and virulent eukaryotic gut parasite Caullerya mesnili (Family: Ichthyosporea). We report community-level changes in host-associated bacteria with the presence of the parasite infection; namely decreased alpha diversity and increased beta diversity at the site of infection, i.e. host gut (but not host body). We also report decreased abundance of bacterial taxa proposed elsewhere to be beneficial for the host, and an appearance of taxa specifically associated with infected hosts. Our study highlights the host-microbiota-infection link in a natural system and raises questions about the role of host-associated microbiota in natural disease epidemics as well as the functional roles of bacteria specifically associated with infected hosts.
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Affiliation(s)
- Amruta Rajarajan
- Corresponding author: Office BU-G09, Überlandstrasse 133, 8600 Dübendorf, Zürich, Switzerland. E-mail: and
| | - Justyna Wolinska
- Department of Evolutionary and Integrative Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), 12587 Berlin, Germany,Department of Biology, Chemistry, Pharmacy, Institut für Biologie, Freie Universität Berlin (FU), 14195 Berlin, Germany
| | - Jean-Claude Walser
- Department of Environmental systems science (D-USYS), Genetic Diversity Centre (GDC), Federal Institute of Technology (ETH) Zürich, 8092, Zürich, Switzerland
| | - Minea Mäder
- Department of Aquatic Ecology, Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Dübendorf, Zürich, Switzerland
| | - Piet Spaak
- Department of Aquatic Ecology, Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Dübendorf, Zürich, Switzerland
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97
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Jacobs JP, Goudarzi M, Lagishetty V, Li D, Mak T, Tong M, Ruegger P, Haritunians T, Landers C, Fleshner P, Vasiliauskas E, Ippoliti A, Melmed G, Shih D, Targan S, Borneman J, Fornace AJ, McGovern DPB, Braun J. Crohn's disease in endoscopic remission, obesity, and cases of high genetic risk demonstrates overlapping shifts in the colonic mucosal-luminal interface microbiome. Genome Med 2022; 14:91. [PMID: 35971134 PMCID: PMC9377146 DOI: 10.1186/s13073-022-01099-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 08/02/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Crohn's disease (CD) patients demonstrate distinct intestinal microbial compositions and metabolic characteristics compared to unaffected controls. However, the impact of inflammation and underlying genetic risk on these microbial profiles and their relationship to disease phenotype are unclear. We used lavage sampling to characterize the colonic mucosal-luminal interface (MLI) microbiome of CD patients in endoscopic remission and unaffected controls relative to obesity, disease genetics, and phenotype. METHODS Cecum and sigmoid colon were sampled from 110 non-CD controls undergoing screening colonoscopy who were stratified by body mass index and 88 CD patients in endoscopic remission (396 total samples). CD polygenic risk score (GRS) was calculated using 186 known CD variants. MLI pellets were analyzed by 16S ribosomal RNA gene sequencing, and supernatants by untargeted liquid chromatography-mass spectrometry. RESULTS CD and obesity were each associated with decreased cecal and sigmoid MLI bacterial diversity and distinct bacterial composition compared to controls, including expansion of Escherichia/Shigella. Cecal and sigmoid dysbiosis indices for CD were significantly greater in obese controls than non-overweight controls. CD, but not obesity, was characterized by altered biogeographic relationship between the sigmoid and cecum. GRS was associated with select taxonomic shifts that overlapped with changes seen in CD compared to controls including Fusobacterium enrichment. Stricturing or penetrating Crohn's disease behavior was characterized by lower MLI bacterial diversity and altered composition, including reduced Faecalibacterium, compared to uncomplicated CD. Taxonomic profiles including reduced Parasutterella were associated with clinical disease progression over a mean follow-up of 3.7 years. Random forest classifiers using MLI bacterial abundances could distinguish disease state (area under the curve (AUC) 0.93), stricturing or penetrating Crohn's disease behavior (AUC 0.82), and future clinical disease progression (AUC 0.74). CD patients showed alterations in the MLI metabolome including increased cholate:deoxycholate ratio compared to controls. CONCLUSIONS Obesity, CD in endoscopic remission, and high CD genetic risk have overlapping colonic mucosal-luminal interface (MLI) microbiome features, suggesting a shared microbiome contribution to CD and obesity which may be influenced by genetic factors. Microbial profiling during endoscopic remission predicted Crohn's disease behavior and progression, supporting that MLI sampling could offer unique insight into CD pathogenesis and provide novel prognostic biomarkers.
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Affiliation(s)
- Jonathan P Jacobs
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095-6949, USA.
- Division of Gastroenterology, Hepatology and Parenteral Nutrition, Veterans Administration Greater Los Angeles Healthcare System, Los Angeles, USA.
| | | | - Venu Lagishetty
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, 90095-6949, USA
| | - Dalin Li
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, USA
| | - Tytus Mak
- National Institute of Standards and Technology, Gaithersburg, USA
| | - Maomeng Tong
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, USA
| | - Paul Ruegger
- Department of Plant Pathology and Microbiology, University of California Riverside, Riverside, USA
| | - Talin Haritunians
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, USA
| | - Carol Landers
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, USA
| | - Philip Fleshner
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, USA
| | - Eric Vasiliauskas
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, USA
| | - Andrew Ippoliti
- Department of Medicine, Keck School of Medicine of USC, Los Angeles, USA
| | - Gil Melmed
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, USA
| | - David Shih
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, USA
| | - Stephan Targan
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, USA
| | - James Borneman
- Department of Plant Pathology and Microbiology, University of California Riverside, Riverside, USA
| | - Albert J Fornace
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington, USA
| | - Dermot P B McGovern
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, USA
| | - Jonathan Braun
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, USA
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98
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Petersen AM. Gastrointestinal dysbiosis and Escherichia coli pathobionts in inflammatory bowel diseases. APMIS 2022; 130 Suppl 144:1-38. [PMID: 35899316 PMCID: PMC9546507 DOI: 10.1111/apm.13256] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andreas Munk Petersen
- Department of Gastroenterology and Department of Clinical Microbiology, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
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99
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Li J, Li Y, Sha R, Zheng L, Xu L, Xie HQ, Zhao B. Effects of perinatal TCDD exposure on colonic microbiota and metabolism in offspring and mother mice. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 832:154762. [PMID: 35364153 DOI: 10.1016/j.scitotenv.2022.154762] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 06/14/2023]
Abstract
Emerging evidence supports that exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) impacts the gut microbiota and metabolic pathways. TCDD can be transmitted from mother to child; thus, we hypothesize that maternal exposure to TCDD may affect the gut microbiota in mothers and offspring. To acquire in vivo evidence supporting this hypothesis, female C57BL/6 mice were administered with TCDD (0.1 and 10 μg/kg body weight (bw)) during pregnancy and lactation periods, and then changes of colonic microbiota in offspring and mothers were evaluated. High-throughput sequencing of the V4 regions of the 16S rRNA gene was performed. The composition and structure of the colonic microbiota in offspring and mothers were significantly influenced by 10 μg/kg bw TCDD as demonstrated by upregulation of harmful bacteria and downregulation of beneficial bacteria. Paradoxically, pathogenic bacteria and opportunistic pathogens were conversely decreased in the offspring of the low-dose TCDD treatment group. Tryptophan (Trp) metabolism exhibited a noticeable change caused by the alteration of colonic microbiota in offspring after maternal exposure to 10 μg/kg bw TCDD, which showed a linear dependence, demonstrating that pathogens or opportunistic pathogens may accelerate the dysbiosis of Trp metabolism. Trp metabolism dysregulation caused by the changed colonic microbiota may subsequently impact other intestinal segments or even living organisms. Our study provides new evidence indicating a potential influence of early TCDD exposure on the colonic microbiota and metabolism.
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Affiliation(s)
- Jiao Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yunping Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Rui Sha
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liping Zheng
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Nanjing 210042, China
| | - Li Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Heidi Qunhui Xie
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bin Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China.
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100
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Zhou F, He K, Li Q, Chapkin RS, Ni Y. Bayesian biclustering for microbial metagenomic sequencing data via multinomial matrix factorization. Biostatistics 2022; 23:891-909. [PMID: 33634824 PMCID: PMC9291645 DOI: 10.1093/biostatistics/kxab002] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 10/08/2020] [Accepted: 01/10/2021] [Indexed: 12/26/2022] Open
Abstract
High-throughput sequencing technology provides unprecedented opportunities to quantitatively explore human gut microbiome and its relation to diseases. Microbiome data are compositional, sparse, noisy, and heterogeneous, which pose serious challenges for statistical modeling. We propose an identifiable Bayesian multinomial matrix factorization model to infer overlapping clusters on both microbes and hosts. The proposed method represents the observed over-dispersed zero-inflated count matrix as Dirichlet-multinomial mixtures on which latent cluster structures are built hierarchically. Under the Bayesian framework, the number of clusters is automatically determined and available information from a taxonomic rank tree of microbes is naturally incorporated, which greatly improves the interpretability of our findings. We demonstrate the utility of the proposed approach by comparing to alternative methods in simulations. An application to a human gut microbiome data set involving patients with inflammatory bowel disease reveals interesting clusters, which contain bacteria families Bacteroidaceae, Bifidobacteriaceae, Enterobacteriaceae, Fusobacteriaceae, Lachnospiraceae, Ruminococcaceae, Pasteurellaceae, and Porphyromonadaceae that are known to be related to the inflammatory bowel disease and its subtypes according to biological literature. Our findings can help generate potential hypotheses for future investigation of the heterogeneity of the human gut microbiome.
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Affiliation(s)
- Fangting Zhou
- Department of Statistics, Texas A&M University, College Station, TX, USA and Institute of Statistics and Big Data, Renmin University of China, Beijing, China
| | - Kejun He
- Center for Applied Statistics, Institute of Statistics and Big Data, Renmin University of China, Beijing, China
| | - Qiwei Li
- Department of Mathematical Sciences, The University of Texas at Dallas, Dallas, TX, USA
| | - Robert S Chapkin
- Department of Nutrition and Food Science, Texas A&M University, College Station, TX, USA
| | - Yang Ni
- Department of Statistics, Texas A&M University, College Station, TX, USA
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