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Furuichi M, Kawaguchi T, Pust MM, Yasuma-Mitobe K, Plichta DR, Hasegawa N, Ohya T, Bhattarai SK, Sasajima S, Aoto Y, Tuganbaev T, Yaginuma M, Ueda M, Okahashi N, Amafuji K, Kiridoshi Y, Sugita K, Stražar M, Avila-Pacheco J, Pierce K, Clish CB, Skelly AN, Hattori M, Nakamoto N, Caballero S, Norman JM, Olle B, Tanoue T, Suda W, Arita M, Bucci V, Atarashi K, Xavier RJ, Honda K. Commensal consortia decolonize Enterobacteriaceae via ecological control. Nature 2024; 633:878-886. [PMID: 39294375 PMCID: PMC11424487 DOI: 10.1038/s41586-024-07960-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 08/19/2024] [Indexed: 09/20/2024]
Abstract
Persistent colonization and outgrowth of potentially pathogenic organisms in the intestine can result from long-term antibiotic use or inflammatory conditions, and may perpetuate dysregulated immunity and tissue damage1,2. Gram-negative Enterobacteriaceae gut pathobionts are particularly recalcitrant to conventional antibiotic treatment3,4, although an emerging body of evidence suggests that manipulation of the commensal microbiota may be a practical alternative therapeutic strategy5-7. Here we isolated and down-selected commensal bacterial consortia from stool samples from healthy humans that could strongly and specifically suppress intestinal Enterobacteriaceae. One of the elaborated consortia, comprising 18 commensal strains, effectively controlled ecological niches by regulating gluconate availability, thereby re-establishing colonization resistance and alleviating Klebsiella- and Escherichia-driven intestinal inflammation in mice. Harnessing these activities in the form of live bacterial therapies may represent a promising solution to combat the growing threat of proinflammatory, antimicrobial-resistant Enterobacteriaceae infection.
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Affiliation(s)
- Munehiro Furuichi
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Takaaki Kawaguchi
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Marie-Madlen Pust
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Center for Computational and Integrative Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Keiko Yasuma-Mitobe
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Damian R Plichta
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Naomi Hasegawa
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Takashi Ohya
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Shakti K Bhattarai
- Department of Microbiology and Physiological Systems, Program in Microbiome Dynamics, UMass Chan Medical School, Worcester, MA, USA
| | - Satoshi Sasajima
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Yoshimasa Aoto
- JSR-Keio University Medical and Chemical Innovation Center, Keio University School of Medicine, Tokyo, Japan
| | - Timur Tuganbaev
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
- Human Biology Microbiome Quantum Research Center (Bio2Q), Keio University, Tokyo, Japan
| | - Mizuki Yaginuma
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Masahiro Ueda
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
- JSR-Keio University Medical and Chemical Innovation Center, Keio University School of Medicine, Tokyo, Japan
| | - Nobuyuki Okahashi
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
- Department of Bioinformatic Engineering, Graduate School of Information Science and Technology, Osaka University, Osaka, Japan
- Division of Physiological Chemistry and Metabolism, Graduate School of Pharmaceutical Sciences, Keio University, Tokyo, Japan
| | - Kimiko Amafuji
- JSR-Keio University Medical and Chemical Innovation Center, Keio University School of Medicine, Tokyo, Japan
| | - Yuko Kiridoshi
- JSR-Keio University Medical and Chemical Innovation Center, Keio University School of Medicine, Tokyo, Japan
| | - Kayoko Sugita
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Martin Stražar
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Julian Avila-Pacheco
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Kerry Pierce
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Clary B Clish
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Ashwin N Skelly
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Masahira Hattori
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
- Cooperative Major in Advanced Health Science, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Nobuhiro Nakamoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | | | | | | | - Takeshi Tanoue
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Wataru Suda
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
- Cooperative Major in Advanced Health Science, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Makoto Arita
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
- Human Biology Microbiome Quantum Research Center (Bio2Q), Keio University, Tokyo, Japan
- Division of Physiological Chemistry and Metabolism, Graduate School of Pharmaceutical Sciences, Keio University, Tokyo, Japan
| | - Vanni Bucci
- Department of Microbiology and Physiological Systems, Program in Microbiome Dynamics, UMass Chan Medical School, Worcester, MA, USA
| | - Koji Atarashi
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
- Human Biology Microbiome Quantum Research Center (Bio2Q), Keio University, Tokyo, Japan
| | - Ramnik J Xavier
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA.
- Center for Computational and Integrative Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA, USA.
| | - Kenya Honda
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan.
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan.
- Human Biology Microbiome Quantum Research Center (Bio2Q), Keio University, Tokyo, Japan.
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Wang Y, Cheng Y, Zhang P, Huang D, Zhai X, Feng Z, Fang D, Liu C, Du J, Cai J. FG-4592 protected haematopoietic system from ionising radiation in mice. Immunology 2024; 172:614-626. [PMID: 38685744 DOI: 10.1111/imm.13797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 04/05/2024] [Indexed: 05/02/2024] Open
Abstract
Ionising radiation exposure can lead to acute haematopoietic radiation syndrome. Despite significant advancements in the field of radioprotection, no drugs with high efficacy and low toxicity have yet been approved by the Food and Drug Administration. FG-4592, as a proline hydroxylase inhibitor, may play an important role in radioprotection of the haematopoietic system. Mice were peritoneal injected with FG-4592 or normal saline. After irradiation, the survival time, body weight, peripheral blood cell and bone marrow cell (BMC) count, cell apoptosis, pathology were analysed and RNA-sequence technique (RNA-Seq) was conducted to explore the mechanism of FG-4592 in the haematopoietic system. Our results indicated that FG-4592 improved the survival rate and weight of irradiated mice and protected the spleen, thymus and bone marrow from IR-induced injury. The number of BMCs was increased and protected against IR-induced apoptosis. FG-4592 also promoted the recovery of the blood system and erythroid differentiation. The results of RNA-Seq and Western blot showed that the NF-κB signalling pathway and hypoxia-inducible factor-1 (HIF-1) signalling pathway were upregulated by FG-4592. Meanwhile, RT-PCR results showed that FG-4592 could promote inflammatory response significantly. FG-4592 exhibited radioprotective effects in the haematopoietic system by promoting inflammatory response and targeting the NF-κB, HIF signalling pathway.
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Affiliation(s)
- Yuedong Wang
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, China
- Department of Radiation Medicine, Faculty of Naval Medicine, Naval Medical University, Shanghai, China
| | - Ying Cheng
- Department of Radiation Medicine, Faculty of Naval Medicine, Naval Medical University, Shanghai, China
| | - Pei Zhang
- Department of Radiation Oncology, Chinese PLA General Hospital, Beijing, China
| | - Daqian Huang
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, China
| | - Xuanlu Zhai
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, China
| | - Zhenlan Feng
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, China
| | - Duo Fang
- Department of Radiation Medicine, Faculty of Naval Medicine, Naval Medical University, Shanghai, China
| | - Cong Liu
- Department of Radiation Medicine, Faculty of Naval Medicine, Naval Medical University, Shanghai, China
| | - Jicong Du
- Department of Radiation Medicine, Faculty of Naval Medicine, Naval Medical University, Shanghai, China
| | - Jianming Cai
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, China
- Department of Radiation Medicine, Faculty of Naval Medicine, Naval Medical University, Shanghai, China
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Jiang N, Liu Z, Wang H, Zhang L, Li M, Li G, Li C, Wang B, Zhao C, Liu L. Alterations in metabolome and microbiome: new clues on cathelicidin-related antimicrobial peptide alleviates acute ulcerative colitis. Front Microbiol 2024; 15:1306068. [PMID: 38380090 PMCID: PMC10877057 DOI: 10.3389/fmicb.2024.1306068] [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: 10/04/2023] [Accepted: 01/26/2024] [Indexed: 02/22/2024] Open
Abstract
Ulcerative colitis (UC) is a chronic and recurrent inflammatory disease of the gastrointestinal tract. This study aimed to determine the effect of cathelicidin-related antimicrobial peptide (Cramp) on dextran sulfate sodium (DSS)-induced acute experimental colitis in mice and to investigate the underlying mechanisms. Acute UC was induced in C57BL/6 mice with 3% DSS for 7 days, 4 mg/kg b.w. synthetic Cramp peptide was administrated once daily starting on day 4 of the experimental period. Mice were evaluated for body weight, colon length, colon histopathology, and inflammatory cytokines in colon tissue. Using 16 s rRNA sequencing, the composition structure of gut microbiota was characterized. Metabolomic profiling of the serum was performed. The results showed that DSS treatment significantly induced intestinal damage as reflected by disease activity index, histopathological features, and colon length, while Cramp treatment significantly prevented these trends. Meanwhile, Cramp treatment decreased the levels of inflammatory cytokines in both serum and colonic tissue on DSS-induced colitis. It was also observed that DSS damaged the integrity of the intestinal epithelial barrier, whereas Cramp also played a protective role by attenuating these deteriorated effects. Furthermore, Cramp treatment reversed the oxidative stress by increasing the antioxidant enzymes of GSH-PX and decreasing the oxidant content of MDA. Notably, compared to the DSS group, Cramp treatment significantly elevated the abundance of Verrucomicrobiota at the phylum level. Furthermore, at the genus level, Parasutterella and Mucispirllum abundance was increased significantly in response to Cramp treatment, although Roseburia and Enterorhabdus reduced remarkably. Metabolic pathway analysis of serum metabolomics showed that Cramp intervention can regulate various metabolic pathways such as α-linolenic acid, taurine and hypotaurine, sphingolipid, and arachidonic acid metabolism. The study concluded that Cramp significantly ameliorated DSS-induced colonic injury, colonic inflammation, and intestinal barrier dysfunction in mice. The underlying mechanism is closely related to the metabolic alterations derived from gut microbiota.
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Affiliation(s)
- Nan Jiang
- Department of Trauma Center, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Zhongyuan Liu
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
| | - Haiyang Wang
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
| | - Lichun Zhang
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
| | - Mengjiao Li
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
| | - Gaoqian Li
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
| | - Chang Li
- Department of Trauma Center and Gastrointestinal Surgery, China-Japan Union Hospital of Jilin University, Jilin, China
| | - Bo Wang
- Department of Trauma Center and Gastrointestinal Surgery, China-Japan Union Hospital of Jilin University, Jilin, China
| | - Cuiqing Zhao
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
| | - Liming Liu
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
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Xu B, Shaoyong W, Wang L, Yang C, Chen T, Jiang X, Yan R, Jiang Z, Zhang P, Jin M, Wang Y. Gut-targeted nanoparticles deliver specifically targeted antimicrobial peptides against Clostridium perfringens infections. SCIENCE ADVANCES 2023; 9:eadf8782. [PMID: 37774026 PMCID: PMC10541502 DOI: 10.1126/sciadv.adf8782] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 08/25/2023] [Indexed: 10/01/2023]
Abstract
Specifically targeted antimicrobial peptides (STAMPs) are novel alternatives to antibiotics, whereas the development of STAMPs for colonic infections is hindered by limited de novo design efficiency and colonic bioavailability. In this study, we report an efficient de novo STAMP design strategy that combines a traversal design, machine learning model, and phage display technology to identify STAMPs against Clostridium perfringens. STAMPs could physically damage C. perfringens, eliminate biofilms, and self-assemble into nanoparticles to entrap pathogens. Further, a gut-targeted engineering particle vaccine (EPV) was used for STAMPs delivery. In vivo studies showed that both STAMP and EPV@STAMP effectively limited C. perfringens infections and then reduced inflammatory response. Notably, EPV@STAMP exhibited stronger protection against colonic infections than STAMPs alone. Moreover, 16S ribosomal RNA sequencing showed that both STAMPs and EPV@STAMP facilitated the recovery of disturbed gut microflora. Collectively, our work may accelerate the development of the discovery and delivery of precise antimicrobials.
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Affiliation(s)
- Bocheng Xu
- National Engineering Research Center for Green Feed and Healthy Breeding, Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Institute of Feed Science, Zhejiang University, Hangzhou 310058, China
| | - Weike Shaoyong
- National Engineering Research Center for Green Feed and Healthy Breeding, Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Institute of Feed Science, Zhejiang University, Hangzhou 310058, China
| | - Lin Wang
- National Engineering Research Center for Green Feed and Healthy Breeding, Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Institute of Feed Science, Zhejiang University, Hangzhou 310058, China
| | - Chen Yang
- Center for Drug Safety Evaluation and Research, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310007, China
| | - Tingjun Chen
- College of Animal Science, Zhejiang University; Hangzhou 310058, China
| | - Xiao Jiang
- National Engineering Research Center for Green Feed and Healthy Breeding, Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Institute of Feed Science, Zhejiang University, Hangzhou 310058, China
| | - Rong Yan
- National Engineering Research Center for Green Feed and Healthy Breeding, Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Institute of Feed Science, Zhejiang University, Hangzhou 310058, China
| | - Zipeng Jiang
- National Engineering Research Center for Green Feed and Healthy Breeding, Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Institute of Feed Science, Zhejiang University, Hangzhou 310058, China
| | - Pan Zhang
- College of Animal Science, Zhejiang University; Hangzhou 310058, China
| | - Mingliang Jin
- National Engineering Research Center for Green Feed and Healthy Breeding, Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Institute of Feed Science, Zhejiang University, Hangzhou 310058, China
| | - Yizhen Wang
- National Engineering Research Center for Green Feed and Healthy Breeding, Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Institute of Feed Science, Zhejiang University, Hangzhou 310058, China
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Bu Y, Liu Y, Liu Y, Cao J, Zhang Z, Yi H. Protective Effects of Bacteriocin-Producing Lactiplantibacillus plantarum on Intestinal Barrier of Mice. Nutrients 2023; 15:3518. [PMID: 37630708 PMCID: PMC10459803 DOI: 10.3390/nu15163518] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/05/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
Bacteriocins are crucial metabolites of probiotics that display beneficial functions. The intestinal barrier is an important target on which probiotics exert their intestinal health activity. However, the impacts of bacteriocin-producing probiotics on the intestinal barrier are unclear. In this study, the effects of bacteriocin-producing Lactiplantibacillus plantarum Q7 and L. plantarum F3-2 on the intestinal barrier of mice were explored. It was shown that L. plantarum Q7 promoted the expression of mucin MUC2 to enhance the protection provided by the intestinal mucus layer. L. plantarum Q7 up-regulated the gene expression of intestinal tight junction proteins ZO-1 and JAM-1 significantly, and L. plantarum F3-2 up-regulated ZO-1 and Claudin-1 markedly, which exhibited tight junction intestinal barrier function. The two strains promoted the release of IgA and IgG at varying degrees. The antimicrobial peptide gene RegIIIγ was up-regulated markedly, and the gene expression of inflammatory cytokines appeared to exhibit an upward trend with L. plantarum Q7 treatment, so as to enhance intestinal immune regulation function. Furthermore, L. plantarum Q7 and L. plantarum F3-2 increased the abundance of the beneficial bacteria Muribaculaceae, inhibited the growth of the harmful bacteria Parabacteroides, and facilitated the synthesis of total short-chain fatty acids (SCFAs), which seemed to favor the prevention of metabolic diseases. Our results suggested that L. plantarum Q7 and L. plantarum F3-2 showed strain specificity in their protective effects on the intestinal chemical, physical, immunological and biological barriers of mice, which provided theoretical support for the selective utilization of bacteriocin-producing strains to regulate host health.
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Affiliation(s)
- Yushan Bu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China; (Y.B.); (Y.L.); (J.C.)
- Food Laboratory of Zhongyuan, Luohe 462300, China
| | - Yisuo Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China; (Y.B.); (Y.L.); (J.C.)
- Food Laboratory of Zhongyuan, Luohe 462300, China
| | - Yinxue Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China; (Y.B.); (Y.L.); (J.C.)
| | - Jiayuan Cao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China; (Y.B.); (Y.L.); (J.C.)
| | - Zhe Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China; (Y.B.); (Y.L.); (J.C.)
| | - Huaxi Yi
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China; (Y.B.); (Y.L.); (J.C.)
- Food Laboratory of Zhongyuan, Luohe 462300, China
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Le MNT, Nguyen THH, Trinh VM, Nguyen TPB, Kawada-Matsuo M, Kayama S, Sugai M, Komatsuzawa H. Comprehensive Analysis of Bacteriocins Produced by the Hypermucoviscous Klebsiella pneumoniae Species Complex. Microbiol Spectr 2023; 11:e0086323. [PMID: 37154746 PMCID: PMC10269471 DOI: 10.1128/spectrum.00863-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 04/11/2023] [Indexed: 05/10/2023] Open
Abstract
Klebsiella pneumoniae produces several kinds of bacteriocins that have antimicrobial effects against closely related species, but few studies have comprehensively reported bacteriocin distribution among the Klebsiella population. In this study, we identified bacteriocin genes in 180 K. pneumoniae species complex genomes, including 170 hypermucoviscous isolates, and investigated the antibacterial activity against 50 strains, including antimicrobial-resistant organisms, belonging to multiple species, namely, Klebsiella spp., Escherichia coli, Pseudomonas spp., Acinetobacter spp., Enterobacter cloacae, Stenotrophomonas maltophilia, Chryseobacterium indologenes, Staphylococcus aureus, Staphylococcus epidermidis, and Streptococcus mutans. Our study determined that 32.8% (59/180) of isolates carried at least one bacteriocin type. Different types of bacteriocin were usually present in different specific sequence types (STs); meanwhile, bacteriocins were not detected in certain STs. Microcin E492 was the most prevalent bacteriocin (14.4%), mostly in ST23 isolates, and displayed a wide spectrum of activity, including against Klebsiella spp., E. coli, Pseudomonas spp., and Acinetobacter spp. Cloacin-like bacteriocin was detected in 7.2% of strains, all of which were non-ST23 isolates, and exhibited inhibitory activity against closely related species, mainly Klebsiella spp. Klebicin B-like bacteriocin was detected at a rate of 9.4%, although 82.4% of these strains carried a disrupted bacteriocin gene, and an inhibitory effect could not be observed from the intact-gene-carrying isolates. Other bacteriocins, such as microcin S-like, microcin B17, and klebicin C-like, were detected at lower rates and had limited inhibitory activity. Our findings suggested that Klebsiella strains that carry different bacteriocin types may affect the composition of the surrounding bacterial community. IMPORTANCE Klebsiella pneumoniae is a Gram-negative commensal bacterium that asymptomatically colonizes human mucosal membranes, such as the intestinal tract, but it is also a leading cause of health care- and community-associated infections. Additionally, multidrug-resistant K. pneumoniae has been continuously evolving, which significantly challenges the available chemotherapeutic treatment for its infections. K. pneumoniae produces several kinds of antimicrobial peptides known as bacteriocins, which have antibacterial activity against closely related species. This work was the first comprehensive report of bacteriocin distribution among the hypermucoviscous K. pneumoniae species complex population and the inhibitory activity of each bacteriocin type against various species, including multidrug-resistant strains. Our findings provide a foundation for future studies on the K. pneumoniae species complex, including studies on the competition within the microflora and the potential applications of bacteriocins in treating multidrug-resistant bacteria.
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Affiliation(s)
- Mi Nguyen-Tra Le
- Department of Bacteriology, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
- Project Research Center for Nosocomial Infectious Diseases, Hiroshima University, Hiroshima, Japan
| | - Thao Huu-Huong Nguyen
- Department of Bacteriology, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Van Minh Trinh
- Department of Bacteriology, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Tam Phuc-Bao Nguyen
- Department of Bacteriology, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Miki Kawada-Matsuo
- Department of Bacteriology, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
- Project Research Center for Nosocomial Infectious Diseases, Hiroshima University, Hiroshima, Japan
| | - Shizuo Kayama
- Project Research Center for Nosocomial Infectious Diseases, Hiroshima University, Hiroshima, Japan
- Antimicrobial Resistance Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Motoyuki Sugai
- Project Research Center for Nosocomial Infectious Diseases, Hiroshima University, Hiroshima, Japan
- Antimicrobial Resistance Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hitoshi Komatsuzawa
- Department of Bacteriology, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
- Project Research Center for Nosocomial Infectious Diseases, Hiroshima University, Hiroshima, Japan
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7
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Zhang C, Liu H, Sun L, Wang Y, Chen X, Du J, Sjöling Å, Yao J, Wu S. An overview of host-derived molecules that interact with gut microbiota. IMETA 2023; 2:e88. [PMID: 38868433 PMCID: PMC10989792 DOI: 10.1002/imt2.88] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 01/17/2023] [Accepted: 01/21/2023] [Indexed: 06/14/2024]
Abstract
The gut microbiota comprises bacteria, archaea, fungi, protists, and viruses that live together and interact with each other and with host cells. A stable gut microbiota is vital for regulating host metabolism and maintaining body health, while a disturbed microbiota may induce different kinds of disease. In addition, diet is also considered to be the main factor that influences the gut microbiota. The host could shape the gut microbiota through other factors. Here, we reviewed the mechanisms that mediate host regulation on gut microbiota, involved in gut-derived molecules, including gut-derived immune system molecules (secretory immunoglobulin A, antimicrobial peptides, cytokines, cluster of differentiation 4+ effector T cell, and innate lymphoid cells), sources related to gut-derived mucosal molecules (carbon sources, nitrogen sources, oxygen sources, and electron respiratory acceptors), gut-derived exosomal noncoding RNA (ncRNAs) (microRNAs, circular RNA, and long ncRNA), and molecules derived from organs other than the gut (estrogen, androgen, neurohormones, bile acid, and lactic acid). This study provides a systemic overview for understanding the interplay between gut microbiota and host, a comprehensive source for potential ways to manipulate gut microbiota, and a solid foundation for future personalized treatment that utilizes gut microbiota.
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Affiliation(s)
- Chenguang Zhang
- College of Animal Science and TechnologyNorthwest A&F UniversityYanglingChina
| | - Huifeng Liu
- College of Animal Science and TechnologyNorthwest A&F UniversityYanglingChina
| | - Lei Sun
- Centre for Translational Microbiome Research, Department of Microbiology, Tumor and Cell BiologyKarolinska InstitutetStockholmSweden
| | - Yue Wang
- College of Animal Science and TechnologyNorthwest A&F UniversityYanglingChina
| | - Xiaodong Chen
- College of Animal Science and TechnologyNorthwest A&F UniversityYanglingChina
| | - Juan Du
- Centre for Translational Microbiome Research, Department of Microbiology, Tumor and Cell BiologyKarolinska InstitutetStockholmSweden
| | - Åsa Sjöling
- Centre for Translational Microbiome Research, Department of Microbiology, Tumor and Cell BiologyKarolinska InstitutetStockholmSweden
| | - Junhu Yao
- College of Animal Science and TechnologyNorthwest A&F UniversityYanglingChina
| | - Shengru Wu
- College of Animal Science and TechnologyNorthwest A&F UniversityYanglingChina
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8
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Mason S, Vornhagen J, Smith SN, Mike LA, Mobley HLT, Bachman MA. The Klebsiella pneumoniae ter Operon Enhances Stress Tolerance. Infect Immun 2023; 91:e0055922. [PMID: 36651775 PMCID: PMC9933665 DOI: 10.1128/iai.00559-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 01/19/2023] Open
Abstract
Healthcare-acquired infections are a leading cause of disease in patients that are hospitalized or in long-term-care facilities. Klebsiella pneumoniae (Kp) is a leading cause of bacteremia, pneumonia, and urinary tract infections in these settings. Previous studies have established that the ter operon, a genetic locus that confers tellurite oxide (K2TeO3) resistance, is associated with infection in colonized patients. Rather than enhancing fitness during infection, the ter operon increases Kp fitness during gut colonization; however, the biologically relevant function of this operon is unknown. First, using a murine model of urinary tract infection, we demonstrate a novel role for the ter operon protein TerC as a bladder fitness factor. To further characterize TerC, we explored a variety of functions, including resistance to metal-induced stress, resistance to radical oxygen species-induced stress, and growth on specific sugars, all of which were independent of TerC. Then, using well-defined experimental guidelines, we determined that TerC is necessary for tolerance to ofloxacin, polymyxin B, and cetylpyridinium chloride. We used an ordered transposon library constructed in a Kp strain lacking the ter operon to identify the genes that are required to resist K2TeO3-induced and polymyxin B-induced stress, which suggested that K2TeO3-induced stress is experienced at the bacterial cell envelope. Finally, we confirmed that K2TeO3 disrupts the Kp cell envelope, though these effects are independent of ter. Collectively, the results from these studies indicate a novel role for the ter operon as a stress tolerance factor, thereby explaining its role in enhancing fitness in the gut and bladder.
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Affiliation(s)
- Sophia Mason
- Department of Pathology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Jay Vornhagen
- Department of Pathology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
- Department of Microbiology & Immunology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Sara N. Smith
- Department of Microbiology & Immunology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Laura A. Mike
- Department of Medical Microbiology & Immunology, University of Toledo, Toledo, Ohio, USA
| | - Harry L. T. Mobley
- Department of Microbiology & Immunology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Michael A. Bachman
- Department of Pathology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
- Department of Microbiology & Immunology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
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9
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Altered Expression of Antimicrobial Peptides in the Upper Gastrointestinal Tract of Patients with Diabetes Mellitus. Nutrients 2023; 15:nu15030754. [PMID: 36771460 PMCID: PMC9919831 DOI: 10.3390/nu15030754] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 02/05/2023] Open
Abstract
Antimicrobial peptides (AMP) are essential components of innate immunity with a broad range of antimicrobial activities against bacteria, viruses, and fungi. The aim of this study was to investigate AMP expression in the upper gastrointestinal tract in normal and pathological metabolic states in humans. Furthermore, we examined the correlation between vitamin D levels and AMP expression in the same cohort. Serum concentrations of 25-hydroxyvitamin D3 were measured, and mRNA expression of β-defensins HBD-1, -2, -3, -4, α-defensins HD-5 and -6 and cathelicidin in the upper gastrointestinal tract epithelia were determined by quantitative RT-PCR in 31 individuals (10 with type 2 diabetes, 10 with insulin resistance, and 11 healthy controls). The majority of the cohort showed low vitamin D concentrations, which were negatively correlated with mRNA expression levels of HBD-3 in corpus mucosa. HBD-1 and HBD-3 mRNA were expressed in corpus mucosa, with the former significantly decreased in patients with diabetes. Hence, we conclude that type 2 diabetes is associated with reduced AMP expression in the upper gastrointestinal tract, which might contribute towards epithelial barrier dysfunction and increased bacterial translocation in these patients.
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10
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Kasarello K, Cudnoch-Jedrzejewska A, Czarzasta K. Communication of gut microbiota and brain via immune and neuroendocrine signaling. Front Microbiol 2023; 14:1118529. [PMID: 36760508 PMCID: PMC9907780 DOI: 10.3389/fmicb.2023.1118529] [Citation(s) in RCA: 33] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 01/12/2023] [Indexed: 01/27/2023] Open
Abstract
The gastrointestinal tract of the human is inhabited by about 5 × 1013 bacteria (of about 1,000 species) as well as archaea, fungi, and viruses. Gut microbiota is known to influence the host organism, but the host may also affect the functioning of the microbiota. This bidirectional cooperation occurs in three main inter-organ signaling: immune, neural, and endocrine. Immune communication relies mostly on the cytokines released by the immune cells into circulation. Also, pathogen-associated or damage-associated molecular patterns (PAMPs or DAMPs) may enter circulation and affect the functioning of the internal organs and gut microbiota. Neural communication relies mostly on the direct anatomical connections made by the vagus nerve, or indirect connections via the enteric nervous system. The third pathway, endocrine communication, is the broadest one and includes the hypothalamic-pituitary-adrenal axis. This review focuses on presenting the latest data on the role of the gut microbiota in inter-organ communication with particular emphasis on the role of neurotransmitters (catecholamines, serotonin, gamma-aminobutyric acid), intestinal peptides (cholecystokinin, peptide YY, and glucagon-like peptide 1), and bacterial metabolites (short-chain fatty acids).
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11
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Valdes J, Gagné-Sansfaçon J, Reyes V, Armas A, Marrero G, Moyo-Muamba M, Ramanathan S, Perreault N, Ilangumaran S, Rivard N, Fortier LC, Menendez A. Defects in the expression of colonic host defense factors associate with barrier dysfunction induced by a high-fat/high-cholesterol diet. Anat Rec (Hoboken) 2022; 306:1165-1183. [PMID: 36196983 DOI: 10.1002/ar.25083] [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: 04/07/2022] [Revised: 08/25/2022] [Accepted: 09/11/2022] [Indexed: 11/07/2022]
Abstract
The effect of Western diets in the gastrointestinal system is largely mediated by their ability to promote alterations in the immunity and physiology of the intestinal epithelium, and to affect the composition of the commensal microbiota. To investigate the response of the colonic epithelium to high-fat/high-cholesterol diets (HFHCDs), we evaluated the synthesis of host defense factors involved in the maintenance of the colonic homeostasis. C57BL/6 mice were fed an HFHCD for 3 weeks and their colons were evaluated for histopathology, gene expression, and microbiota composition. In addition, intestinal permeability and susceptibility to Citrobacter rodentium were also studied. HFHCD caused colonic hyperplasia, loss of goblet cells, thinning of the mucus layer, moderate changes in the composition of the intestinal microbiota, and an increase in intestinal permeability. Gene expression analyses revealed significant drops in the transcript levels of Muc1, Muc2, Agr2, Atoh1, Spdef, Ang4, Camp, Tff3, Dmbt1, Fcgbp, Saa3, and Retnlb. The goblet cell granules of HFHCD-fed mice were devoid of Relmβ and Tff3, indicating defective production of those two factors critical for intestinal epithelial defense and homeostasis. In correspondence with these defects, colonic bacteria were in close contact with, and invading the epithelium. Fecal shedding of C. rodentium showed an increased bacterial burden in HFHCD-fed animals accompanied by increased epithelial damage. Collectively, our results show that HFHCD perturbs the synthesis of colonic host defense factors, which associate with alterations in the commensal microbiota, the integrity of the intestinal barrier, and the host's susceptibility to enteric infections.
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Affiliation(s)
- Jennifer Valdes
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Jessica Gagné-Sansfaçon
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Vilcy Reyes
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Anny Armas
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Gisela Marrero
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Mitterrand Moyo-Muamba
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Sheela Ramanathan
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Nathalie Perreault
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Subburaj Ilangumaran
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Nathalie Rivard
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Louis-Charles Fortier
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Alfredo Menendez
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Quebec, Canada
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12
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Li Y, Wang Y, Shi F, Zhang X, Zhang Y, Bi K, Chen X, Li L, Diao H. Phospholipid metabolites of the gut microbiota promote hypoxia-induced intestinal injury via CD1d-dependent γδ T cells. Gut Microbes 2022; 14:2096994. [PMID: 35898110 PMCID: PMC9336479 DOI: 10.1080/19490976.2022.2096994] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Gastrointestinal dysfunction is a common symptom of acute mountain sickness (AMS). The gut microbiota and γδ T cells play critical roles in intestinal disease. However, the mechanistic link between the microbiota and γδ T cells in hypoxia-induced intestinal injury remains unclear. Here, we show that hypoxia-induced intestinal damage was significantly alleviated after microbiota depletion with antibiotics. Hypoxia modulated gut microbiota composition by promoting antimicrobial peptides angiogenin-4 secretions. The abundance of Clostridium in the gut of mice after hypoxia significantly decreased, while the abundance of Desulfovibrio significantly increased. Furthermore, Desulfovibrio-derived phosphatidylethanolamine and phosphatidylcholine promoted γδ T cell activation. In CD1d-deficient mice, the levels of intraepithelial IL-17A and γδ T cells and intestinal damage were significantly decreased compared with those in wild-type mice under hypoxia. Mechanistically, phospholipid metabolites from Desulfovibrio are presented by intestinal epithelial CD1d to induce the proliferation of IL-17A-producing γδ T cells, which aggravates intestinal injury. Gut microbiota-derived metabolites promote hypoxia-induced intestinal injury via CD1d-dependent γδ T cells, suggesting that phospholipid metabolites and γδ T cells can be targets for AMS therapy.
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Affiliation(s)
- Yuyu Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang province, China
| | - Yuchong Wang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang province, China
| | - Fan Shi
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang province, China
| | - Xujun Zhang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang province, China
| | - Yongting Zhang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang province, China
| | - Kefan Bi
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang province, China
| | - Xuequn Chen
- Division of Neurobiology and Physiology, Department of Basic Medical Sciences, School of Medicine, Zhejiang University, Hangzhou, Zhejiang province, China
| | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang province, China,Jinan Microecological Biomedicine Shandong Laboratory, Jinan, Shandong province, China,CONTACT Hongyan Diao State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, No.79 Qingchun Road, Shangcheng District, Hangzhou, Zhejiang province, China
| | - Hongyan Diao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang province, China,Lanjuan Li State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Jinan Microecological Biomedicine Shandong Laboratory, 250117 Jinan, China
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13
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Liu X, Wang L, Zhuang H, Yang Z, Jiang G, Liu Z. Promoting intestinal IgA production in mice by oral administration with anthocyanins. Front Immunol 2022; 13:826597. [PMID: 35967357 PMCID: PMC9364608 DOI: 10.3389/fimmu.2022.826597] [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: 12/01/2021] [Accepted: 07/04/2022] [Indexed: 11/28/2022] Open
Abstract
While recent years have witnessed ever-growing evidence on the prebiotic attributes of anthocyanins for treatment of microbiota-associated diseases, the complex interplay between anthocyanin uptake, the gut microbiota, and the intestinal mucosal immune system remains poorly understood. Here, we investigate the effects of bilberry anthocyanins on the gut microbiota composition and metabolism, and the intestinal mucosal immune system of mice. We observed an increased proportion of IgA-producing plasma cells in the mesenteric lymph nodes (MLNs) and an enhanced secretion of secretory immunoglobulin A (sIgA) and antimicrobial peptides in the small intestine. Small intestine transcriptome analysis further suggested that anthocyanins influenced IgA production. We found that oral administration of anthocyanins altered the gut microbiota through maintaining the anaerobic intestinal environment, promoting the secretion of sIgA and antimicrobial peptides, and downregulating cell motility and mobile genetic elements of commensal bacteria. These observations suggest that the oral administration of anthocyanins helps in maintaining intestinal homeostasis and thus it may find applications in immunotherapy and related fields.
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Affiliation(s)
- Xuerun Liu
- Key Lab of Industrial Biocatalysis Ministry of Education, Tsinghua University, Beijing, China
- Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Luoyang Wang
- School of Basic Medicine, Qingdao University, Qingdao, China
- *Correspondence: Luoyang Wang, ; Zheng Liu,
| | - Huiren Zhuang
- Key Lab of Industrial Biocatalysis Ministry of Education, Tsinghua University, Beijing, China
- Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Zhenghuan Yang
- Key Lab of Industrial Biocatalysis Ministry of Education, Tsinghua University, Beijing, China
- Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Guoqiang Jiang
- Key Lab of Industrial Biocatalysis Ministry of Education, Tsinghua University, Beijing, China
- Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Zheng Liu
- Key Lab of Industrial Biocatalysis Ministry of Education, Tsinghua University, Beijing, China
- Department of Chemical Engineering, Tsinghua University, Beijing, China
- *Correspondence: Luoyang Wang, ; Zheng Liu,
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14
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Wu S, Zhang Y, Ma J, Liu Y, Li W, Wang T, Xu X, Wang Y, Cheng K, Zhuang R. Interleukin-6 absence triggers intestinal microbiota dysbiosis and mucosal immunity in mice. Cytokine 2022; 153:155841. [PMID: 35276634 DOI: 10.1016/j.cyto.2022.155841] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 02/21/2022] [Accepted: 02/23/2022] [Indexed: 01/05/2023]
Abstract
Interleukin-6 (IL-6) in mucosal immune cells is involved in post-injury intestinal regeneration, inflammation responses, and gastric homeostasis. However, the interaction between IL-6 and the dynamic balance of gut microbiota (GM) remains unexplored. Intestinal pathology was assessed by hematoxylin and eosin and periodic acid-Schiff staining in wild-type (WT) and IL-6 gene knockout (KO) C57BL/6J mice. GM profiles were established via high-throughput sequencing of the fecal bacterial 16S rRNA gene. Intestinal α- and β-defensins were measured by quantitative real-time PCR; further, flow cytometry was performed to analyze isolated intraepithelial lymphocytes (IELs). Compared with the WT, IL-6 KO did not obviously change gut structures, but significantly reduced GM diversity, resulting in reduced metabolic pathways with decreased gram-positive but elevated gram-negative bacteria. More taxa alterations included differences at the phyla (e.g., increased Verrucomicrobia and decreased Firmicutes) and genera (e.g., increased Akkermansia and decreased Lactobacillus) levels. Absence of IL-6 also significantly increased intestinal expression of defensins α3 and α4 (Defa3 and Defa4) and the percentage of natural TCRγδ+ IELs, providing a molecular basis for triggering mucosal immune response. Therefore, IL-6 loss remodels GM composition and alters IEL maintenance, identifying IL-6 as a crucial cytokine for GM dysbiosis and mucosal immunity.
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Affiliation(s)
- Shuwen Wu
- Institute of Medical Research, Northwestern Polytechnical University, #127 West Youyi Road, Xi'an, Shaanxi 710072, China
| | - Yuan Zhang
- Institute of Medical Research, Northwestern Polytechnical University, #127 West Youyi Road, Xi'an, Shaanxi 710072, China
| | - Jingchang Ma
- Department of Immunology, Fourth Military Medical University, #169 West Changle Road, Xi'an, Shaanxi 710032, China
| | - Yongming Liu
- Orthopedic Department of Tangdu Hospital, Fourth Military Medical University, #1 Xinsi Road, Xi'an, Shaanxi 710032, China
| | - Wenpeng Li
- Orthopedic Department of Tangdu Hospital, Fourth Military Medical University, #1 Xinsi Road, Xi'an, Shaanxi 710032, China
| | - Tingting Wang
- Department of Immunology, Fourth Military Medical University, #169 West Changle Road, Xi'an, Shaanxi 710032, China
| | - Xuexue Xu
- Institute of Medical Research, Northwestern Polytechnical University, #127 West Youyi Road, Xi'an, Shaanxi 710072, China
| | - Yuling Wang
- Department of Immunology, Fourth Military Medical University, #169 West Changle Road, Xi'an, Shaanxi 710032, China
| | - Kun Cheng
- Department of Immunology, Fourth Military Medical University, #169 West Changle Road, Xi'an, Shaanxi 710032, China
| | - Ran Zhuang
- Institute of Medical Research, Northwestern Polytechnical University, #127 West Youyi Road, Xi'an, Shaanxi 710072, China; Department of Immunology, Fourth Military Medical University, #169 West Changle Road, Xi'an, Shaanxi 710032, China.
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15
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Jiang Y, Wan Y, Li J, Zhao Y, Ma Y, Yu J, Yuan D, Xiang S, Du F, Wu X, Li M, Chen Y, Xiao Z, Wen Q, Hu W, Shen J. Alterations in Intestinal Microbiota Composition in Mice Treated With Vitamin D3 or Cathelicidin. Front Oncol 2022; 11:700038. [PMID: 35004267 PMCID: PMC8732771 DOI: 10.3389/fonc.2021.700038] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 11/19/2021] [Indexed: 02/02/2023] Open
Abstract
Gut microbiota is a complex aggregation of microbial organisms, which offers diverse protective benefits to the host. Dysbiosis of intestinal microbiota is frequently associated with many diseases. Vitamin D3 (VD), which was originally associated with bone health, also possesses antimicrobial activities and can act through antimicrobial peptide. Cathelicidin is a type of antimicrobial peptide in host to maintain the balance of gut microbiome. Our current study sought to evaluate the protective effect of VD and cathelicidin in mice intestines by administration of VD or mCRAMP-encoding L. lactis. We herein provided a comprehensive profile of the impact of VD and mCRAMP on gut microbiota using 16S rRNA sequencing, followed by bioinformatics and statistical analysis. Our results revealed an increased richness of bacterial community in mice intestines due to VD administration. Moreover, we showed a beneficial effect of VD and mCRAMP by enhancing the colonization of bacterial taxa that are associated with protective effects to the host but repressing the propagation of bacterial taxa that are associated with harmful effects to the host. Various metabolic pathways related to amino acid and lipid metabolism were affected in this process. We further established a bacterial panel as a reliable biomarker to evaluate the efficacy of remodeling the mice gut microbiota by VD and mCRAMP administration. The uncovered effects will deepen the comprehension about the antibacterial mechanisms of VD and mCRAMP and provide new insights for therapeutic implication of them.
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Affiliation(s)
- Yu Jiang
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,South Sichuan Institute of Translational Medicine, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Yue Wan
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Jing Li
- Department of Oncology and Hematology, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Yueshui Zhao
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,South Sichuan Institute of Translational Medicine, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Yongshun Ma
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,South Sichuan Institute of Translational Medicine, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Jing Yu
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,South Sichuan Institute of Translational Medicine, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Donghong Yuan
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,South Sichuan Institute of Translational Medicine, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Shixin Xiang
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,South Sichuan Institute of Translational Medicine, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Fukuan Du
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,South Sichuan Institute of Translational Medicine, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Xu Wu
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,South Sichuan Institute of Translational Medicine, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Mingxing Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,South Sichuan Institute of Translational Medicine, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Yu Chen
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,South Sichuan Institute of Translational Medicine, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Zhangang Xiao
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,South Sichuan Institute of Translational Medicine, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Qinglian Wen
- Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Wei Hu
- Department of Gastroenterology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Jing Shen
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, China.,South Sichuan Institute of Translational Medicine, Luzhou, China.,Laboratory of Personalised Cell Therapy & Cell Medicines, School of Pharmacy, Southwest Medical University, Luzhou, China
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16
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Zhu SQ, Liu J, Han B, Zhao WP, Zhou BH, Zhao J, Wang HW. Fluoride exposure cause colon microbiota dysbiosis by destroyed microenvironment and disturbed antimicrobial peptides expression in colon. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118381. [PMID: 34673156 DOI: 10.1016/j.envpol.2021.118381] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
Colon microenvironment and microbiota dysbiosis are closely related to various human metabolic diseases. In this study, a total of 72 healthy female mice were exposed to fluoride (F) (0, 25, 50 and 100 mg/L F-) in drinking water for 70 days. The effect of F on intestinal barrier and the diversity and composition in colon microbiota have been evaluated. Meanwhile, the relationship among F-induced colon microbiota alterations and antimicrobial peptides (AMPs) expression and short-chain fatty acids (SCFAs) level also been assessed. The results suggested that F decreased the goblet cells number and glycoprotein expression in colon. And further high-throughput 16S rRNA gene sequencing result demonstrated that F exposure induced the diversity and community composition of colonic microbiota significantly changes. Linear Discriminant Analysis Effect Size (LEfSe) analysis identified 11 predominantly characteristic taxa which may be the biomarker in response to F exposure. F-induced intestinal microbiota perturbations lead to the significantly decreased SCFAs levels in colon. Immunofluorescence results showed that F increased the protein expression of interleukin-17A (IL-17A) and IL-22 (P < 0.01) and disturbed the expression of interleukin-17 receptor A (IL-17RA) and IL-22R (P < 0.05 or P < 0.01). In addition, the increased expression of IL-17A and IL-22 cooperatively enhanced the mRNA expression of AMPs which response to F-induced microbiota perturbations. Collectively, destroyed microenvironment and disturbed AMPs are the primary reason of microbiota dysbiosis in colon after F exposure. Colonic homoeostasis imbalance would be helpful for finding the source of F-induced chronic systemic diseases.
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Affiliation(s)
- Shi-Quan Zhu
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Jing Liu
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Bo Han
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China.
| | - Wen-Peng Zhao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China.
| | - Bian-Hua Zhou
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Jing Zhao
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
| | - Hong-Wei Wang
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang, 471000, Henan, People's Republic of China.
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17
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Zheng SJ, Luo Y, Xiao JH. The Impact of Intestinal Microorganisms and Their Metabolites on Type 1 Diabetes Mellitus. Diabetes Metab Syndr Obes 2022; 15:1123-1139. [PMID: 35431564 PMCID: PMC9012311 DOI: 10.2147/dmso.s355749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 03/24/2022] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Type 1 diabetes mellitus (T1DM) is an autoimmune disease with a complex etiology comprising numerous genetic and environmental factors; however, many of the mechanisms underlying disease development remain unclear. Nevertheless, a critical role has recently been assigned to intestinal microorganisms in T1DM disease pathogenesis. In particular, a decrease in intestinal microbial diversity, increase in intestinal permeability, and the translocation of intestinal bacteria to the pancreas have been reported in patients and animal models with T1DM. Moreover, intestinal microbial metabolites differ between healthy individuals and patients with T1DM. Specifically, short-chain fatty acid (SCFA) production, which contributes to intestinal barrier integrity and immune response regulation, is significantly reduced in patients with T1DM. Considering this correlation between intestinal microorganisms and T1DM, many studies have investigated the potential of intestinal microbiota in preventive and therapeutic strategies for T1DM. OBJECTIVE The aim of this review is to provide further support for the notion that intestinal microbiota contributes to the regulation of T1DM occurrence and development. In particular, this article reviews the involvement of the intestinal microbiota and the associated metabolites in T1DM pathogenesis, as well as recent studies on the involvement of the intestinal microbiota in T1DM prevention and treatment. CONCLUSION Intestinal microbes and their metabolites contribute to T1DM occurrence and development and may become a potential target for novel therapeutics.
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Affiliation(s)
- Shu-Juan Zheng
- Zunyi Municipal Key Laboratory of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, People’s Republic of China
| | - Yi Luo
- Zunyi Municipal Key Laboratory of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, People’s Republic of China
- Guizhou Provincial Research Center for Translational Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, People’s Republic of China
| | - Jian-Hui Xiao
- Zunyi Municipal Key Laboratory of Medicinal Biotechnology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, People’s Republic of China
- Guizhou Provincial Research Center for Translational Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, People’s Republic of China
- Correspondence: Jian-Hui Xiao, Guizhou Provincial Research Center for Translational Medicine, Affiliated Hospital of Zunyi Medical University, 149 Dalian Road, HuiChuan District, Zunyi, 563003, People’s Republic of China, Email
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18
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Gubatan J, Holman DR, Puntasecca CJ, Polevoi D, Rubin SJS, Rogalla S. Antimicrobial peptides and the gut microbiome in inflammatory bowel disease. World J Gastroenterol 2021; 27:7402-7422. [PMID: 34887639 PMCID: PMC8613745 DOI: 10.3748/wjg.v27.i43.7402] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/13/2021] [Accepted: 11/15/2021] [Indexed: 02/06/2023] Open
Abstract
Antimicrobial peptides (AMP) are highly diverse and dynamic molecules that are expressed by specific intestinal epithelial cells, Paneth cells, as well as immune cells in the gastrointestinal (GI) tract. They play critical roles in maintaining tolerance to gut microbiota and protecting against enteric infections. Given that disruptions in tolerance to commensal microbiota and loss of barrier function play major roles in the pathogenesis of inflammatory bowel disease (IBD) and converge on the function of AMP, the significance of AMP as potential biomarkers and novel therapeutic targets in IBD have been increasingly recognized in recent years. In this frontier article, we discuss the function and mechanisms of AMP in the GI tract, examine the interaction of AMP with the gut microbiome, explore the role of AMP in the pathogenesis of IBD, and review translational applications of AMP in patients with IBD.
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Affiliation(s)
- John Gubatan
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Redwood City, CA 94063, United States
| | - Derek R Holman
- Department of Radiology, Molecular Imaging Program at Stanford , Stanford University, Stanford , CA 94305, United States
| | | | - Danielle Polevoi
- Stanford University School of Medicine, Stanford University, Stanford, CA 94063, United States
| | - Samuel JS Rubin
- Stanford University School of Medicine, Stanford University, Stanford, CA 94063, United States
| | - Stephan Rogalla
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Redwood City, CA 94063, United States
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19
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Intestinal hypoxia-inducible factor 2α regulates lactate levels to shape the gut microbiome and alter thermogenesis. Cell Metab 2021; 33:1988-2003.e7. [PMID: 34329568 DOI: 10.1016/j.cmet.2021.07.007] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/12/2021] [Accepted: 07/07/2021] [Indexed: 12/17/2022]
Abstract
Accumulating evidence suggests that the gut microbiota regulates obesity through metabolite-host interactions. However, the mechanisms underlying such interactions have been unclear. Here, we found that intestinal hypoxia-inducible factor 2α (HIF-2α) positively regulates gut lactate by controlling the expression of intestinal Ldha. Intestine-specific HIF-2α ablation in mice resulted in lower lactate levels, and less Bacteroides vulgatus and greater Ruminococcus torques abundance, respectively. Together, these changes resulted in elevated taurine-conjugated cholic acid (TCA) and deoxycholic acid (DCA) levels and activation of the adipose G-protein-coupled bile acid receptor, GPBAR1 (TGR5). This activation upregulated expression of uncoupling protein (UCP) 1 and mitochondrial creatine kinase (CKMT) 2, resulting in elevation of white adipose tissue thermogenesis. Administration of TCA and DCA mirrored these phenotypes, and colonization with B. vulgatus and R. torques inhibited and induced thermogenesis, respectively. This work deepens our understanding of how host genes regulate the microbiome and provides novel strategies for alleviating obesity.
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20
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Zhang Y, Li CX, Zhang XZ. Bacteriophage-mediated modulation of microbiota for diseases treatment. Adv Drug Deliv Rev 2021; 176:113856. [PMID: 34237403 DOI: 10.1016/j.addr.2021.113856] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 06/22/2021] [Accepted: 06/29/2021] [Indexed: 12/15/2022]
Abstract
The symbiotic microbiota is nowadays regarded as a human "invisible organ", its imbalance has been shown to be associated with many diseases. Besides, the progress of diseases can in turn change the internal structure of microbiota. Some diseases have shown their unique microbiota markers that may be potential therapeutic targets. Therefore, modulating microbiota may be a powerful strategy for diseases treatment. However, conventional microbiota modulation strategies lack selectivity and are suffer from side effects. In recent years, with the increasing challenge of antibiotic resistance, bacteriophage (phage) therapy has gradually presented its potential to treat drug-resistant infections. Phages are viruses that infect bacteria, with high selectivity for specific bacteria and almost no tropism for mammalian cells. Studies showed that phage-mediated precise modulation of microbiota has achieved great success in diseases treatment. Here, we briefly summarized the treatment strategies of phage-mediated modulation of microbiota, and discussed prospect of possible development in this field.
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Affiliation(s)
- Yu Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, PR China
| | - Chu-Xin Li
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, PR China
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, PR China.
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21
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Mukonowenzou NC, Adeshina KA, Donaldson J, Ibrahim KG, Usman D, Erlwanger KH. Medicinal Plants, Phytochemicals, and Their Impacts on the Maturation of the Gastrointestinal Tract. Front Physiol 2021; 12:684464. [PMID: 34393812 PMCID: PMC8363294 DOI: 10.3389/fphys.2021.684464] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 06/29/2021] [Indexed: 12/24/2022] Open
Abstract
The gastrointestinal tract (GIT) is the first point of contact for ingested substances and thus represents a direct interface with the external environment. Apart from food processing, this interface plays a significant role in immunity and contributes to the wellbeing of individuals through the brain-gut-microbiota axis. The transition of life from the in utero environment, to suckling and subsequent weaning has to be matched by phased development and maturation of the GIT; from an amniotic fluid occupancy during gestation, to the milk in the suckling state and ultimately solid food ingestion at weaning. This phased maturation of the GIT can be affected by intrinsic and extrinsic factors, including diet. Despite the increasing dietary inclusion of medicinal plants and phytochemicals for health benefits, a dearth of studies addresses their impact on gut maturation. In this review we focus on some recent findings mainly on the positive impact of medicinal plants and phytochemicals in inducing precocious maturation of the GIT, not only in humans but in pertinent animals. We also discuss Paneth cells as mediators and potential markers of GIT maturation.
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Affiliation(s)
| | - Kehinde Ahmad Adeshina
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Sokoto, Nigeria
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Sokoto, Nigeria
| | - Janine Donaldson
- Faculty of Health Sciences, School of Physiology, University of the Witwatersrand, Johannesburg, Johannesburg, South Africa
| | - Kasimu Ghandi Ibrahim
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Sokoto, Nigeria
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Sokoto, Nigeria
| | - Dawoud Usman
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Sokoto, Nigeria
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Sokoto, Nigeria
| | - Kennedy Honey Erlwanger
- Faculty of Health Sciences, School of Physiology, University of the Witwatersrand, Johannesburg, Johannesburg, South Africa
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22
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Salzman NH, Schwimmer JB. Pediatric nonalcoholic fatty liver disease and the microbiome: Mechanisms contributing to pathogenesis and progression. ACTA ACUST UNITED AC 2021; 19:22-29. [PMID: 34222711 DOI: 10.1016/j.coemr.2021.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the most common form of pediatric liver disease in the United States, and often associated with obesity and metabolic syndrome. NAFLD comprises a broad spectrum of liver diseases, from hepatic steatosis to steatohepatitis, fibrosis and cirrhosis. Disease progression is considered a multi-modal process of liver injury. The intestinal microbiome has been implicated in several aspects of NAFLD pathophysiology. Pediatric studies associating the intestinal microbiome with NAFLD have been limited in number and complicated by inconsistencies in study design and approach. Nevertheless, they provide support for involvement of the intestinal microbiome in NAFLD development and progression and point to common mechanisms shared by microbiome-associated inflammatory diseases with potential to inform future therapeutic intervention.
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Affiliation(s)
- Nita H Salzman
- Division of Gastroenterology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin.,Center for Microbiome Research, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Jeffrey B Schwimmer
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, University of California, San Diego School of Medicine, La Jolla, California.,Department of Gastroenterology, Rady Children's Hospital San Diego, Dan Diego, California
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23
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Wei M, Huang Q, Liu Z, Luo Y, Xia J. Intestinal Barrier Dysfunction Participates in the Pathophysiology of Ischemic Stroke. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2021; 20:401-416. [PMID: 33749565 DOI: 10.2174/1871527320666210322115808] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/12/2020] [Accepted: 11/30/2020] [Indexed: 11/22/2022]
Abstract
The gastrointestinal tract is a major organ for the body to absorb nutrients, water and electrolytes. At the same time, it is a tight barrier to resist the invasion of harmful substances and maintain the homeostasis of the internal environment. Destruction of the intestinal barrier is linked to the digestive system, cardiovascular system, endocrine system and other systemic diseases. Mounting evidence suggests that ischemic stroke not only changes the intestinal microbes, but also increases the permeability of the intestinal barrier, leading to bacterial translocation, infection, and even sepsis. The intestinal barrier, as part of the gut-brain axis, has also been proven to participate in the pathophysiological process of ischemic stroke. However, little attention has been paid to it. Since ischemic stroke is a major public health issue worldwide, there is an urgent need to know more about the disease for better prevention, treatment and prognosis. Therefore, understanding the pathophysiological relationship between ischemic stroke and the intestinal barrier will help researchers further uncover the pathophysiological mechanism of ischemic stroke and provide a novel therapeutic target for the treatment of ischemic stroke. Here, we review the physiology and pathology between ischemic stroke and intestinal barrier based on related articles published in the past ten years about the relationship between ischemic stroke, stroke risk factors and intestinal flora, intestinal barrier, and discuss the following parts: the intestinal barrier; possible mechanisms of intestinal barrier destruction in ischemic stroke; intestinal barrier destruction caused by stroke-related risk factors; intestinal barrier dysfunction in ischemic stroke; targeting the intestinal barrier to improve stroke; conclusions and perspectives.
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Affiliation(s)
- Minping Wei
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008. China
| | - Qin Huang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008. China
| | - Zeyu Liu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008. China
| | - Yunfang Luo
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008. China
| | - Jian Xia
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008. China
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24
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Mishima Y, Ishihara S. Molecular Mechanisms of Microbiota-Mediated Pathology in Irritable Bowel Syndrome. Int J Mol Sci 2020; 21:ijms21228664. [PMID: 33212919 PMCID: PMC7698457 DOI: 10.3390/ijms21228664] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 11/12/2020] [Accepted: 11/13/2020] [Indexed: 02/07/2023] Open
Abstract
Irritable bowel syndrome (IBS) is one of the most prevalent functional gastrointestinal disorders, and accumulating evidence gained in both preclinical and clinical studies indicate the involvement of enteric microbiota in its pathogenesis. Gut resident microbiota appear to influence brain activity through the enteric nervous system, while their composition and function are affected by the central nervous system. Based on these results, the term “brain–gut–microbiome axis” has been proposed and enteric microbiota have become a potential therapeutic target in IBS cases. However, details regarding the microbe-related pathophysiology of IBS remain elusive. This review summarizes the existing knowledge of molecular mechanisms in the pathogenesis of IBS as well as recent progress related to microbiome-derived neurotransmitters, compounds, metabolites, neuroendocrine factors, and enzymes.
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25
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Qin Z, Yang X, Chen G, Park C, Liu Z. Crosstalks Between Gut Microbiota and Vibrio Cholerae. Front Cell Infect Microbiol 2020; 10:582554. [PMID: 33194819 PMCID: PMC7644805 DOI: 10.3389/fcimb.2020.582554] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Accepted: 09/17/2020] [Indexed: 12/11/2022] Open
Abstract
Vibrio cholerae, the causative agent of cholera, could proliferate in aquatic environment and infect humans through contaminated food and water. Enormous microorganisms residing in human gastrointestinal tract establish a special microecological system, which immediately responds to the invasion of V. cholerae, through “colonization resistance” mechanisms, such as antimicrobial peptide production, nutrients competition, and intestinal barrier maintenances. Meanwhile, V. cholerae could quickly sense those signals and modulate the expression of relevant genes to circumvent those stresses during infection, leading to successful colonization on the surface of small intestinal epithelial cells. In this review, we summarized the crosstalks profiles between gut microbiota and V. cholerae in the terms of Type VI Secretion System (T6SS), Quorum Sensing (QS), Reactive Oxygen Species (ROS)/pH stress, and Bioactive metabolites. These mechanisms can also be applied to molecular bacterial pathogenesis of other pathogens in host.
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Affiliation(s)
- Zixin Qin
- Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoman Yang
- Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Guozhong Chen
- Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Chaiwoo Park
- Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Zhi Liu
- Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
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26
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Tonomura S, Ihara M, Friedland RP. Microbiota in cerebrovascular disease: A key player and future therapeutic target. J Cereb Blood Flow Metab 2020; 40:1368-1380. [PMID: 32312168 PMCID: PMC7308516 DOI: 10.1177/0271678x20918031] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Stroke is the second leading cause of death and a significant cause of disability worldwide. Recent advances in DNA sequencing, proteomics, metabolomics, and computational tools are dramatically increasing access to the identification of host-microbiota interactions in systemic diseases. In this review, we describe the accumulating evidence showing how human microbiota plays an essential role in cerebrovascular diseases. We introduce the symbiotic relationships between microbiota and the mucosal immune system, focusing on differences by anatomical sites. Microbiota directly or indirectly contributes to the pathogenesis of traditional vascular risk factors including age, obesity, diabetes mellitus, dyslipidemia, and hypertension. Moreover, recent studies proposed independent effects of the microbiome on the progression of various subtypes of stroke through direct microbial invasion, exotoxins, functional amyloids, inflammation, and microbe-derived metabolites. We propose the critical concept of gene-microbial interaction to elucidate the heterogeneity of stroke and provide possible therapeutic avenues. We suggest ways to resolve the vast inter-individual diversity of cerebrovascular disease and mechanisms for personalized prevention and treatment.
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Affiliation(s)
- Shuichi Tonomura
- Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan.,Department of Neurology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masafumi Ihara
- Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Robert P Friedland
- Department of Neurology, University of Louisville School of Medicine, Louisville, KY, USA
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27
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Kirpich IA, Warner DR, Feng W, Joshi-Barve S, McClain CJ, Seth D, Zhong W, Zhou Z, Osna NA, Kharbanda KK. Mechanisms, biomarkers and targets for therapy in alcohol-associated liver injury: From Genetics to nutrition: Summary of the ISBRA 2018 symposium. Alcohol 2020; 83:105-114. [PMID: 31129175 PMCID: PMC7043088 DOI: 10.1016/j.alcohol.2019.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 02/06/2023]
Abstract
The symposium "Mechanisms, Biomarkers and Targets for Therapy in Alcohol-associated Liver Injury: From Genetics to Nutrition" was held at the 19th Congress of International Society for Biomedical Research on Alcoholism on September 13th, 2018 in Kyoto, Japan. The goal of the symposium was to discuss the importance of genetics and nutrition in alcoholic liver disease (ALD) development from mechanistic and therapeutic perspectives. The following is a summary of this session addressing the gene polymorphisms in ALD, the role of zinc in gut-liver axis perturbations associated with ALD, highlighting the importance of dietary fat in ALD pathogenesis, the hepatic n6 and n3 PUFA oxylipin pattern associated with ethanol-induced liver injury, and finally deliberating on new biomarkers for alcoholic hepatitis and their implications for diagnosis and therapy. This summary of the symposium will benefit junior and senior faculty currently investigating alcohol-induced organ pathology as well as undergraduate, graduate, and post-graduate students and fellows.
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Affiliation(s)
- Irina A Kirpich
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA; University of Louisville Alcohol Center, University of Louisville School of Medicine, Louisville, KY, USA; Robley Rex Veterans Medical Center, Louisville, KY, USA; Hepatobiology & Toxicology Program, University of Louisville, Louisville, KY, USA
| | - Dennis R Warner
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - Wenke Feng
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA; University of Louisville Alcohol Center, University of Louisville School of Medicine, Louisville, KY, USA; Hepatobiology & Toxicology Program, University of Louisville, Louisville, KY, USA
| | - Swati Joshi-Barve
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA; University of Louisville Alcohol Center, University of Louisville School of Medicine, Louisville, KY, USA; Hepatobiology & Toxicology Program, University of Louisville, Louisville, KY, USA
| | - Craig J McClain
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Louisville, Louisville, KY, USA; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA; University of Louisville Alcohol Center, University of Louisville School of Medicine, Louisville, KY, USA; Robley Rex Veterans Medical Center, Louisville, KY, USA; Hepatobiology & Toxicology Program, University of Louisville, Louisville, KY, USA
| | - Devanshi Seth
- Drug Health Services, Royal Prince Alfred Hospital, Camperdown, NSW, Australia, And Centenary Institute of Cancer Medicine and Cell Biology, The University of Sydney, Sydney, NSW, Australia
| | - Wei Zhong
- Center for Translational Biomedical Research, Department of Nutrition, University of North Carolina at Greensboro, Kannapolis, NC, 28081, USA
| | - Zhanxiang Zhou
- Center for Translational Biomedical Research, Department of Nutrition, University of North Carolina at Greensboro, Kannapolis, NC, 28081, USA
| | - Natalia A Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA; Department of Biochemistry & Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA.
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28
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Wu J, Ma N, Johnston LJ, Ma X. Dietary Nutrients Mediate Intestinal Host Defense Peptide Expression. Adv Nutr 2020; 11:92-102. [PMID: 31204774 PMCID: PMC7442325 DOI: 10.1093/advances/nmz057] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 04/14/2019] [Accepted: 05/17/2019] [Indexed: 02/06/2023] Open
Abstract
The intestinal tract is the shared locus of intestinal epithelial cells, immune cells, nutrient digestion and absorption, and microbial survival. The gut in animals faces continuous challenges in communicating with the external environment. Threats from endogenous imbalance and exogenous feeds, especially pathogens, could trigger a disorder of homeostasis, leading to intestinal disease and even systematic disease risk. As a part of the intestinal protective barrier, endogenous host defense peptides (HDPs) play multiple beneficial physiological roles in the gut mucosa. Moreover, enhancing endogenous HDPs is being developed as a new strategy for resisting pathogens and commensal microbes, and to maintain intestinal health and reduce antibiotic use. In recent years, multiple nutrients such as branched-chain amino acids, SCFAs, lactose, zinc, and cholecalciferol (vitamin D3) have been reported to significantly increase HDP expression. Nutritional intervention has received more attention and is viewed as a promising means to defend against pathogenic infections and intestinal inflammation. The present review focuses on current discoveries surrounding HDP expression and nutritional regulation of mechanisms in the gut. Our aim is to provide a comprehensive overview, referable tactics, and novel opinions.
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Affiliation(s)
- Jianmin Wu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Ning Ma
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Lee J Johnston
- Swine Nutrition and Production, West Central Research and Outreach Center, University of Minnesota, Morris, MN, USA
| | - Xi Ma
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
- Department of Internal Medicine, Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, USA
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29
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Baquero F, Lanza VF, Baquero MR, Del Campo R, Bravo-Vázquez DA. Microcins in Enterobacteriaceae: Peptide Antimicrobials in the Eco-Active Intestinal Chemosphere. Front Microbiol 2019; 10:2261. [PMID: 31649628 PMCID: PMC6795089 DOI: 10.3389/fmicb.2019.02261] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 09/17/2019] [Indexed: 12/31/2022] Open
Abstract
Microcins are low-molecular-weight, ribosomally produced, highly stable, bacterial-inhibitory molecules involved in competitive, and amensalistic interactions between Enterobacteriaceae in the intestine. These interactions take place in a highly complex chemical landscape, the intestinal eco-active chemosphere, composed of chemical substances that positively or negatively influence bacterial growth, including those originated from nutrient uptake, and those produced by the action of the human or animal host and the intestinal microbiome. The contribution of bacteria results from their effect on the host generated molecules, on food and digested food, and organic substances from microbial origin, including from bacterial degradation. Here, we comprehensively review the main chemical substances present in the human intestinal chemosphere, particularly of those having inhibitory effects on microorganisms. With this background, and focusing on Enterobacteriaceae, the most relevant human pathogens from the intestinal microbiota, the microcin’s history and classification, mechanisms of action, and mechanisms involved in microcin’s immunity (in microcin producers) and resistance (non-producers) are reviewed. Products from the chemosphere likely modulate the ecological effects of microcin activity. Several cross-resistance mechanisms are shared by microcins, colicins, bacteriophages, and some conventional antibiotics, which are expected to produce cross-effects. Double-microcin-producing strains (such as microcins MccM and MccH47) have been successfully used for decades in the control of pathogenic gut organisms. Microcins are associated with successful gut colonization, facilitating translocation and invasion, leading to bacteremia, and urinary tract infections. In fact, Escherichia coli strains from the more invasive phylogroups (e.g., B2) are frequently microcinogenic. A publicly accessible APD3 database http://aps.unmc.edu/AP/ shows particular genes encoding microcins in 34.1% of E. coli strains (mostly MccV, MccM, MccH47, and MccI47), and much less in Shigella and Salmonella (<2%). Some 4.65% of Klebsiella pneumoniae are microcinogenic (mostly with MccE492), and even less in Enterobacter or Citrobacter (mostly MccS). The high frequency and variety of microcins in some Enterobacteriaceae indicate key ecological functions, a notion supported by their dominance in the intestinal microbiota of biosynthetic gene clusters involved in the synthesis of post-translationally modified peptide microcins.
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Affiliation(s)
- Fernando Baquero
- Department of Microbiology, Ramón y Cajal University Hospital, Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
| | - Val F Lanza
- Bioinformatics Unit, Ramón y Cajal University Hospital, Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
| | - Maria-Rosario Baquero
- Department of Microbiology, Alfonso X El Sabio University, Villanueva de la Cañada, Spain
| | - Rosa Del Campo
- Department of Microbiology, Ramón y Cajal University Hospital, Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
| | - Daniel A Bravo-Vázquez
- Department of Microbiology, Alfonso X El Sabio University, Villanueva de la Cañada, Spain
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Carvalheiro R, Costilla R, Neves HHR, Albuquerque LG, Moore S, Hayes BJ. Unraveling genetic sensitivity of beef cattle to environmental variation under tropical conditions. Genet Sel Evol 2019; 51:29. [PMID: 31221081 PMCID: PMC6585094 DOI: 10.1186/s12711-019-0470-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 06/04/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Selection of cattle that are less sensitive to environmental variation in unfavorable environments and more adapted to harsh conditions is of primary importance for tropical beef cattle production systems. Understanding the genetic background of sensitivity to environmental variation is necessary for developing strategies and tools to increase efficiency and sustainability of beef production. We evaluated the degree of sensitivity of beef cattle performance to environmental variation, at the animal and molecular marker levels (412 K single nucleotide polymorphisms), by fitting and comparing the results of different reaction norm models (RNM), using a comprehensive dataset of Nellore cattle raised under diverse environmental conditions. RESULTS Heteroscedastic RNM (with different residual variances for environmental level) provided better fit than homoscedastic RNM. In addition, spline and quadratic RNM outperformed linear RNM, which suggests the existence of a nonlinear genetic component affecting the performance of Nellore cattle. This nonlinearity indicates that within-animal sensitivity depends on the environmental gradient (EG) level and that animals may present different patterns of sensitivity according to the range of environmental variations. The spline RNM showed that sensitivity to environmental variation from harsh to average EG is lowly correlated with sensitivity from average to good EG, at both the animal and molecular marker levels. Although the genomic regions that affect sensitivity in harsher environments were not the same as those associated with less challenging environments, the candidate genes within those regions participate in common biological processes such as those related to inflammatory and immune response. Some plausible candidate genes were identified. CONCLUSIONS Sensitivity of tropical beef cattle to environmental variation is not continuous along the environmental gradient, which implies that animals that are less sensitive to harsher conditions are not necessarily less responsive to variations in better environmental conditions, and vice versa. The same pattern was observed at the molecular marker level, i.e. genomic regions and, consequently, candidate genes associated with sensitivity to harsh conditions were not the same as those associated with sensitivity to less challenging conditions.
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Affiliation(s)
- Roberto Carvalheiro
- School of Agricultural and Veterinarian Sciences, Sao Paulo State University (UNESP), Jaboticabal, SP, 14884-900, Brazil. .,National Council for Scientific and Technological Development (CNPq), Brasília, DF, 71605-001, Brazil.
| | - Roy Costilla
- Institute for Molecular Bioscience (IMB), University of Queensland, St. Lucia, QLD, 4072, Australia.,Queensland Alliance for Agriculture and Food Innovation (QAAFI), Centre for Animal Science, University of Queensland, St. Lucia, QLD, 4072, Australia
| | | | - Lucia G Albuquerque
- School of Agricultural and Veterinarian Sciences, Sao Paulo State University (UNESP), Jaboticabal, SP, 14884-900, Brazil.,National Council for Scientific and Technological Development (CNPq), Brasília, DF, 71605-001, Brazil
| | - Stephen Moore
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), Centre for Animal Science, University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Ben J Hayes
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), Centre for Animal Science, University of Queensland, St. Lucia, QLD, 4072, Australia
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Affiliation(s)
- Donald E. Fry
- MPA Healthcare Solutions, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, and Department of Surgery, University of New Mexico School of Medicine, Albuquerque, New Mexico
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