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Bi H, Guo S, Wang Y, Liu Z, Wu G, Huo X, Guo L, Guo H, Xiong Y. Pinobanksin ameliorated DSS-induced acute colitis mainly through modulation of SLC7A11/glutathione-mediated intestinal epithelial ferroptosis. Food Funct 2024. [PMID: 38606509 DOI: 10.1039/d3fo04500e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
Inhibition of ferroptosis in intestinal epithelial cells serves as an attractive target for the development of therapeutic strategies for colitis. Pinobanksin, one of the main flavonoids derived from propolis, possesses significant anti-inflammatory effects and inhibits the cell death of several cell lines. Here, we evaluated whether pinobanksin influenced colitis by modulation of epithelial ferroptosis. Mice treated with 2.5% DSS dissolved in sterile distilled water were established for an acute colitis model. The mitochondrial morphology, colonic iron level, lipid peroxidation products MDA/4-HNE, and lipid reactive oxygen species levels were measured to assess ferroptosis in epithelial cells. RNA-seq and functional analyses were performed to reveal key genes mediating pinobanksin-exerted modulation of ferroptosis. We found that pinobanksin, at different doses, induced significant anti-colitis effects and inhibited the elevated ferroptosis in colonic epithelial cells isolated from DSS-treated mice largely by activating GPX4 (negative regulator of ferroptosis). Furthermore, RNA-seq assays indicated that pinobanksin significantly increased the cystine transporter SLC7A11 in colonic tissues from mice with colitis. Depletion of SLC7A11 largely blocked pinobanksin-induced promotion of cystine uptake/glutathione biosynthesis and suppression of ferroptosis in epithelial cells from mice with colitis or IEC-6 cells pretreated with RSL3. Altogether, pinobanksin alleviated DSS-induced colitis largely by inhibition of ferroptosis in epithelial cells. Activation of SLC7A11 by pinobanksin resulted in the promotion of cystine uptake and enhancement of glutathione biosynthesis. This work will provide novel guidance for the clinical use of pinobanksin to treat colitis through inhibition of epithelial ferroptosis.
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Affiliation(s)
- Hailian Bi
- First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China.
| | - Shibin Guo
- First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China.
| | - Yan Wang
- College of Integrative Medicine, Dalian Medical University, Dalian, 116011, China
| | - Zhijie Liu
- First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China.
| | - Guokai Wu
- First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China.
| | - Xiaokui Huo
- Second Affiliated Hospital of Dalian Medical University, Dalian, 116021, China.
| | - Li Guo
- First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China.
| | - Huishu Guo
- First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China.
| | - Yongjian Xiong
- First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China.
- College of Integrative Medicine, Dalian Medical University, Dalian, 116011, China
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Apalowo OE, Adegoye GA, Mbogori T, Kandiah J, Obuotor TM. Nutritional Characteristics, Health Impact, and Applications of Kefir. Foods 2024; 13:1026. [PMID: 38611332 PMCID: PMC11011999 DOI: 10.3390/foods13071026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 03/25/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
A global epidemiological shift has been observed in recent decades, characterized by an increase in age-related disorders, notably non-communicable chronic diseases, such as type 2 diabetes mellitus, cardiovascular and neurodegenerative diseases, and cancer. An appreciable causal link between changes in the gut microbiota and the onset of these maladies has been recognized, offering an avenue for effective management. Kefir, a probiotic-enriched fermented food, has gained significance in this setting due to its promising resource for the development of functional or value-added food formulations and its ability to reshape gut microbial composition. This has led to increasing commercial interest worldwide as it presents a natural beverage replete with health-promoting microbes and several bioactive compounds. Given the substantial role of the gut microbiota in human health and the etiology of several diseases, we conducted a comprehensive synthesis covering a total of 33 investigations involving experimental animal models, aimed to elucidate the regulatory influence of bioactive compounds present in kefir on gut microbiota and their potential in promoting optimal health. This review underscores the outstanding nutritional properties of kefir as a central repository of bioactive compounds encompassing micronutrients and amino acids and delineates their regulatory effects at deficient, adequate, and supra-nutritional intakes on the gut microbiota and their broader physiological consequences. Furthermore, an investigation of putative mechanisms that govern the regulatory effects of kefir on the gut microbiota and its connections with various human diseases was discussed, along with potential applications in the food industry.
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Affiliation(s)
- Oladayo Emmanuel Apalowo
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Starkville, MS 39762, USA; (O.E.A.); (G.A.A.)
| | - Grace Adeola Adegoye
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Starkville, MS 39762, USA; (O.E.A.); (G.A.A.)
- Department of Nutrition and Health Science, Ball State University, Muncie, IN 47306, USA;
| | - Teresia Mbogori
- Department of Nutrition and Health Science, Ball State University, Muncie, IN 47306, USA;
| | - Jayanthi Kandiah
- Department of Nutrition and Health Science, Ball State University, Muncie, IN 47306, USA;
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Li W, Lv BM, Quan Y, Zhu Q, Zhang HY. Associations between Serum Mineral Nutrients, Gut Microbiota, and Risk of Neurological, Psychiatric, and Metabolic Diseases: A Comprehensive Mendelian Randomization Study. Nutrients 2024; 16:244. [PMID: 38257137 PMCID: PMC10818407 DOI: 10.3390/nu16020244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Recent observational studies have reported associations between serum mineral nutrient levels, gut microbiota composition, and neurological, psychiatric, and metabolic diseases. However, the causal effects of mineral nutrients on gut microbiota and their causal associations with diseases remain unclear and require further investigation. This study aimed to identify the associations between serum mineral nutrients, gut microbiota, and risk of neurological, psychiatric, and metabolic diseases using Mendelian randomization (MR). We conducted an MR study using the large-scale genome-wide association study (GWAS) summary statistics of 5 serum mineral nutrients, 196 gut microbes at the phylum, order, family, and genus levels, and a variety of common neurological, psychiatric, and metabolic diseases. Initially, the independent causal associations of mineral nutrients and gut microbiota with diseases were examined by MR. Subsequently, the causal effect of mineral nutrients on gut microbiota was estimated to investigate whether specific gut microbes mediated the association between mineral nutrients and diseases. Finally, we performed sensitivity analyses to assess the robustness of the study results. After correcting for multiple testing, we identified a total of 33 causal relationships among mineral nutrients, gut microbiota, and diseases. Specifically, we found 4 causal relationships between 3 mineral nutrition traits and 3 disease traits, 15 causal associations between 14 gut microbiota traits and 6 disease traits, and 14 causal associations involving 4 mineral nutrition traits and 15 gut microbiota traits. Meanwhile, 118 suggestive associations were identified. The current study reveals multiple causal associations between serum mineral nutrients, gut microbiota, risk of neurological, psychiatric, and metabolic diseases, and potentially provides valuable insights for subsequent nutritional therapies.
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Affiliation(s)
- Wang Li
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China; (W.L.); (B.-M.L.); (Y.Q.); (H.-Y.Z.)
| | - Bo-Min Lv
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China; (W.L.); (B.-M.L.); (Y.Q.); (H.-Y.Z.)
- Human Phenome Institute, Fudan University, Shanghai 200438, China
| | - Yuan Quan
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China; (W.L.); (B.-M.L.); (Y.Q.); (H.-Y.Z.)
| | - Qiang Zhu
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China; (W.L.); (B.-M.L.); (Y.Q.); (H.-Y.Z.)
- Key Laboratory of Smart Farming for Agricultural Animals, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
| | - Hong-Yu Zhang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China; (W.L.); (B.-M.L.); (Y.Q.); (H.-Y.Z.)
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4
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Bleich RM, Li C, Sun S, Ahn JH, Dogan B, Barlogio CJ, Broberg CA, Franks AR, Bulik-Sullivan E, Carroll IM, Simpson KW, Fodor AA, Arthur JC. A consortia of clinical E. coli strains with distinct in vitro adherent/invasive properties establish their own co-colonization niche and shape the intestinal microbiota in inflammation-susceptible mice. Microbiome 2023; 11:277. [PMID: 38124090 PMCID: PMC10731797 DOI: 10.1186/s40168-023-01710-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 10/26/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) patients experience recurrent episodes of intestinal inflammation and often follow an unpredictable disease course. Mucosal colonization with adherent-invasive Escherichia coli (AIEC) are believed to perpetuate intestinal inflammation. However, it remains unclear if the 24-year-old AIEC in vitro definition fully predicts mucosal colonization in vivo. To fill this gap, we have developed a novel molecular barcoding approach to distinguish strain variants in the gut and have integrated this approach to explore mucosal colonization of distinct patient-derived E. coli isolates in gnotobiotic mouse models of colitis. RESULTS Germ-free inflammation-susceptible interleukin-10-deficient (Il10-/-) and inflammation-resistant WT mice were colonized with a consortium of AIEC and non-AIEC strains, then given a murine fecal transplant to provide niche competition. E. coli strains isolated from human intestinal tissue were each marked with a unique molecular barcode that permits identification and quantification by barcode-targeted sequencing. 16S rRNA sequencing was used to evaluate the microbiome response to E. coli colonization. Our data reveal that specific AIEC and non-AIEC strains reproducibly colonize the intestinal mucosa of WT and Il10-/- mice. These E. coli expand in Il10-/- mice during inflammation and induce compositional dysbiosis to the microbiome in an inflammation-dependent manner. In turn, specific microbes co-evolve in inflamed mice, potentially diversifying E. coli colonization patterns. We observed no selectivity in E. coli colonization patterns in the fecal contents, indicating minimal selective pressure in this niche from host-microbe and interbacterial interactions. Because select AIEC and non-AIEC strains colonize the mucosa, this suggests the in vitro AIEC definition may not fully predict in vivo colonization potential. Further comparison of seven E. coli genomes pinpointed unique genomic features contained only in highly colonizing strains (two AIEC and two non-AIEC). Those colonization-associated features may convey metabolic advantages (e.g., iron acquisition and carbohydrate consumption) to promote efficient mucosal colonization. CONCLUSIONS Our findings establish the in vivo mucosal colonizer, not necessarily AIEC, as a principal dysbiosis driver through crosstalk with host and associated microbes. Furthermore, we highlight the utility of high-throughput screens to decode the in vivo colonization dynamics of patient-derived bacteria in murine models. Video Abstract.
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Affiliation(s)
- Rachel M Bleich
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Biology, Appalachian State University, Boone, NC, USA
| | - Chuang Li
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Shan Sun
- College of Computing and Informatics, University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Ju-Hyun Ahn
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Belgin Dogan
- Department of Clinical Sciences, Cornell University College of Veterinary Medicine, Ithaca, NY, USA
| | - Cassandra J Barlogio
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Christopher A Broberg
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Adrienne R Franks
- Center for Gastrointestinal Biology & Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Emily Bulik-Sullivan
- Center for Gastrointestinal Biology & Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ian M Carroll
- Center for Gastrointestinal Biology & Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kenneth W Simpson
- Department of Clinical Sciences, Cornell University College of Veterinary Medicine, Ithaca, NY, USA
| | - Anthony A Fodor
- College of Computing and Informatics, University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Janelle C Arthur
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Center for Gastrointestinal Biology & Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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5
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Dorsey AF, Miller EM. Revisiting geophagy: An evolved sickness behavior to microbiome-mediated gastrointestinal inflammation. Evol Anthropol 2023; 32:325-335. [PMID: 37661330 DOI: 10.1002/evan.22004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/19/2023] [Accepted: 08/21/2023] [Indexed: 09/05/2023]
Abstract
Geophagy, the consumption of clay or similar substances, is known as an evolved behavior that protects vulnerable populations, such as pregnant women and children, against gastrointestinal injury. However, perplexing questions remain, like the presence of geophagy in the absence of overt gastrointestinal infection and the potential causal relationship between geophagy and iron deficiency anemia. In this review, we hypothesize that geophagy is an inflammation-mediated sickness behavior regulated via the vagus nerve. We further hypothesize that the gut microbiome plays a critical role in mediating the relationship between inflammation and geophagy. By including inflammation and the microbiome within the existing protection hypothesis, we can explain how subclinical gastrointestinal states induce geophagy. Furthermore, we can explain how gastrointestinal inflammation is responsible for both geophagy and iron-deficiency anemia, explaining why the two phenomena frequently co-occur. Ultimately, defining geophagy as a sickness behavior allows us to integrate the gut-brain axis into geophagy research.
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Affiliation(s)
- Achsah F Dorsey
- Department of Anthropology, University of Massachusetts, Amherst, Massachusetts, USA
| | - Elizabeth M Miller
- Department of Anthropology, University of South Florida, Tampa, Florida, USA
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Rieg T, Xue J, Stevens M, Thomas L, White J, Dominguez Rieg J. Intravenous ferric carboxymaltose and ferric derisomaltose alter the intestinal microbiome in female iron-deficient anemic mice. Biosci Rep 2023; 43:BSR20231217. [PMID: 37671923 PMCID: PMC10520285 DOI: 10.1042/bsr20231217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 08/31/2023] [Accepted: 09/06/2023] [Indexed: 09/07/2023] Open
Abstract
Iron deficiency anemia (IDA) is a leading global health concern affecting approximately 30% of the population. Treatment for IDA consists of replenishment of iron stores, either by oral or intravenous (IV) supplementation. There is a complex bidirectional interplay between the gut microbiota, the host's iron status, and dietary iron availability. Dietary iron deficiency and supplementation can influence the gut microbiome; however, the effect of IV iron on the gut microbiome is unknown. We studied how commonly used IV iron preparations, ferric carboxymaltose (FCM) and ferric derisomaltose (FDI), affected the gut microbiome in female iron-deficient anemic mice. At the phylum level, vehicle-treated mice showed an expansion in Verrucomicrobia, mostly because of the increased abundance of Akkermansia muciniphila, along with contraction in Firmicutes, resulting in a lower Firmicutes/Bacteroidetes ratio (indicator of dysbiosis). Treatment with either FCM or FDI restored the microbiome such that Firmicutes and Bacteroidetes were the dominant phyla. Interestingly, the phyla Proteobacteria and several members of Bacteroidetes (e.g., Alistipes) were expanded in mice treated with FCM compared with those treated with FDI. In contrast, several Clostridia class members were expanded in mice treated with FDI compared with FCM (e.g., Dorea spp., Eubacterium). Our data demonstrate that IV iron increases gut microbiome diversity independently of the iron preparation used; however, differences exist between FCM and FDI treatments. In conclusion, replenishing iron stores with IV iron preparations in clinical conditions, such as inflammatory bowel disease or chronic kidney disease, could affect gut microbiome composition and consequently contribute to an altered disease outcome.
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Affiliation(s)
- Timo Rieg
- Department of Molecular Pharmacology and Physiology, Hypertension and Kidney Research Center, University of South Florida, Tampa, FL 33612, U.S.A
- James A. Haley Veterans’ Hospital, Tampa, FL 33612, U.S.A
| | - Jianxiang Xue
- Department of Molecular Pharmacology and Physiology, Hypertension and Kidney Research Center, University of South Florida, Tampa, FL 33612, U.S.A
| | - Monica Stevens
- Department of Molecular Pharmacology and Physiology, Hypertension and Kidney Research Center, University of South Florida, Tampa, FL 33612, U.S.A
| | - Linto Thomas
- Department of Molecular Pharmacology and Physiology, Hypertension and Kidney Research Center, University of South Florida, Tampa, FL 33612, U.S.A
| | | | - Jessica A. Dominguez Rieg
- Department of Molecular Pharmacology and Physiology, Hypertension and Kidney Research Center, University of South Florida, Tampa, FL 33612, U.S.A
- James A. Haley Veterans’ Hospital, Tampa, FL 33612, U.S.A
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Ma Y, Fei Y, Ding S, Jiang H, Fang J, Liu G. Trace metal elements: a bridge between host and intestinal microorganisms. Sci China Life Sci 2023; 66:1976-1993. [PMID: 37528296 DOI: 10.1007/s11427-022-2359-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 04/23/2023] [Indexed: 08/03/2023]
Abstract
Trace metal elements, such as iron, copper, manganese, and zinc, are essential nutrients for biological processes. Although their intake demand is low, they play a crucial role in cell homeostasis as the cofactors of various enzymes. Symbiotic intestinal microorganisms compete with their host for the use of trace metal elements. Moreover, the metabolic processes of trace metal elements in the host and microorganisms affect the organism's health. Supplementation or the lack of trace metal elements in the host can change the intestinal microbial community structure and function. Functional changes in symbiotic microorganisms can affect the host's metabolism of trace metal elements. In this review, we discuss the absorption and transport processes of trace metal elements in the host and symbiotic microorganisms and the effects of dynamic changes in the levels of trace metal elements on the intestinal microbial community structure. We also highlight the participation of trace metal elements as enzyme cofactors in the host immune process. Our findings indicate that the host uses metal nutrition immunity or metal poisoning to resist pathogens and improve immunity.
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Affiliation(s)
- Yong Ma
- College of Bioscience and Biotechnology, Hunan Agricultural University, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Changsha, 410128, China
| | - Yanquan Fei
- College of Bioscience and Biotechnology, Hunan Agricultural University, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Changsha, 410128, China
| | - Sujuan Ding
- College of Bioscience and Biotechnology, Hunan Agricultural University, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Changsha, 410128, China
| | - Hongmei Jiang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Changsha, 410128, China
| | - Jun Fang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Changsha, 410128, China.
| | - Gang Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Changsha, 410128, China
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Dong Z, Liu S, Deng Q, Li G, Tang Y, Wu X, Wan D, Yin Y. Role of iron in host-microbiota interaction and its effects on intestinal mucosal growth and immune plasticity in a piglet model. Sci China Life Sci 2023; 66:2086-2098. [PMID: 37530911 DOI: 10.1007/s11427-022-2409-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/15/2023] [Indexed: 08/03/2023]
Abstract
Iron is an essential trace element for both the host and resident microbes in the gut. In this study, iron was administered orally and parenterally to anemic piglets to investigate the role of iron in host-microbiota interaction and its effects on intestinal mucosal growth and immune plasticity. We found that oral iron administration easily increased the abundance of Proteobacteria and Escherichia-Shigella, and decreased the abundance of Lactobacillus in the ileum. Furthermore, similar bacterial changes, namely an increase in Proteobacteria, Escherichia-Shigella, and Fusobacterium and a reduction in the Christensenellaceae_R-7_group, were observed in the colon of both iron-supplemented groups. Spearman's correlation analysis indicated that the changed Fusobacterium, Fusobacteria and Proteobacteria in the colon were positively correlated with hemoglobin, colon and spleen iron levels. Nevertheless, it was found that activated mTOR1 signaling, improved villous height and crypt depth in the ileum, enhanced immune communication, and increased protein expression of IL-22 and IL-10 in the colon of both iron-supplemented groups. In conclusion, the benefits of improved host iron outweigh the risks of altered gut microbiota for intestinal mucosal growth and immune regulation in treating iron deficiency anemia.
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Affiliation(s)
- Zhenglin Dong
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - Shuan Liu
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - Qingqing Deng
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Guanya Li
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Yulong Tang
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - Xin Wu
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - Dan Wan
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China.
| | - Yulong Yin
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China.
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Bleich RM, Li C, Sun S, Barlogio CJ, Broberg CA, Franks AR, Bulik-Sullivan E, Dogan B, Simpson KW, Carroll IM, Fodor AA, Arthur JC. A consortia of clinical E. coli strains with distinct in-vitro adherent/invasive properties establish their own co-colonization niche and shape the intestinal microbiota in inflammation-susceptible mice. Res Sq 2023:rs.3.rs-2899665. [PMID: 37214858 PMCID: PMC10197778 DOI: 10.21203/rs.3.rs-2899665/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Background Inflammatory bowel disease (IBD) patients experience recurrent episodes of intestinal inflammation and often follow an unpredictable disease course. Mucosal colonization with adherent-invasive Escherichia coli (AIEC) are believed to perpetuate intestinal inflammation. However, it remains unclear if the 24-year-old AIEC in-vitro definition fully predicts mucosal colonization in-vivo. To fill this gap, we have developed a novel molecular barcoding approach to distinguish strain variants in the gut and have integrated this approach to explore mucosal colonization of distinct patient-derived E. coli isolates in gnotobiotic mouse models of colitis. Results Germ-free inflammation-susceptible interleukin-10-deficient (Il10-/-) and inflammation-resistant WT mice were colonized with a consortia of AIEC and non-AIEC strains, then given a murine fecal transplant to provide niche competition. E. coli strains isolated from human intestinal tissue were each marked with a unique molecular barcode that permits identification and quantification by barcode-targeted sequencing. 16S rRNA sequencing was used to evaluate the microbiome response to E. coli colonization. Our data reveal that specific AIEC and non-AIEC strains reproducibly colonize the intestinal mucosa of WT and Il10-/- mice. These E. coli expand in Il10-/- mice during inflammation and induce compositional dysbiosis to the microbiome in an inflammation-dependent manner. In turn, specific microbes co-evolve in inflamed mice, potentially diversifying E. coli colonization patterns. We observed no selectivity in E. coli colonization patterns in the fecal contents, indicating minimal selective pressure in this niche from host-microbe and interbacterial interactions. Because select AIEC and non-AIEC strains colonize the mucosa, this suggests the in vitro AIEC definition may not fully predict in vivo colonization potential. Further comparison of seven E. coli genomes pinpointed unique genomic features contained only in highly colonizing strains (two AIEC and two non-AIEC). Those colonization-associated features may convey metabolic advantages (e.g., iron acquisition and carbohydrate consumption) to promote efficient mucosal colonization. Conclusions Our findings establish the in-vivo mucosal colonizer, not necessarily AIEC, as a principal dysbiosis driver through crosstalk with host and associated microbes. Furthermore, we highlight the utility of high-throughput screens to decode the in-vivo colonization dynamics of patient-derived bacteria in murine models.
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Affiliation(s)
| | - Chuang Li
- University of North Carolina at Chapel Hill
| | - Shan Sun
- University of North Carolina at Charlotte
| | | | | | | | | | - Belgin Dogan
- Cornell University College of Veterinary Medicine
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10
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Arenbaoligao, Guo X, Xiong J, Zhang S, Yang Y, Chen D, Xie Y. Kumatakenin inhibited iron-ferroptosis in epithelial cells from colitis mice by regulating the Eno3-IRP1-axis. Front Pharmacol 2023; 14:1127931. [PMID: 37006994 PMCID: PMC10063804 DOI: 10.3389/fphar.2023.1127931] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 03/06/2023] [Indexed: 03/19/2023] Open
Abstract
Inhibition of epithelial ferroptosis in colonic tissues relieved clinical symptoms and improved endoscopic presentations in inflammatory bowel disease (IBD). Kumatakenin, the main ingredient of traditional Chinese medicinal cloves and Alpinia purpurata, is reported to possess therapeutic benefits. However, whether kumatakenin could inhibit ferroptosis and further alleviate colitis remains unclear. Here, we measured the effects of kumatakenin on ferroptosis of colonic epithelial cells from colitis mice. The colitis model was induced in mice by oral intake of 2.5% dextran sulfate sodium in drinking water. RNA sequencing was performed to investigate the mechanism underlying kumatakenin-mediated effects on colitis. The results showed that different doses of kumatakenin significantly alleviated symptoms and suppressed intestinal inflammation in the colitis mouse model. Kumatakenin supplementation decreased cellular iron levels and suppressed ferroptosis in epithelial cells from colitis mice. RNA sequencing, qPCR, and pharmacological inhibition assays showed that kumatakenin reduced cellular iron levels and suppressed ferroptosis in epithelial cells from colitis mice at least partially by upregulating expression of enolase (Eno-3). Furthermore, kumatakenin decreased iron levels in epithelial cells by modulating the Eno3-iron regulatory protein (IRP1) axis. Molecular docking results revealed that kumatakenin could bind Eno3 via hydrogen bonding with the amino acid residues Thr208, Val206, and Pro203. This work will provide a scientific basis for the clinical use of kumatakenin in the treatment of colitis.
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11
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Liu H, Wu W, Luo Y. Oral and intravenous iron treatment alter the gut microbiome differentially in dialysis patients. Int Urol Nephrol 2023; 55:759-767. [PMID: 36166104 PMCID: PMC9957911 DOI: 10.1007/s11255-022-03377-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 09/21/2022] [Indexed: 11/24/2022]
Abstract
OBJECTIVE Chronic kidney disease (CKD) is often complicated by anemia, which seriously affects the quality-of-life and prognosis of patients. These patients usually need iron replacement therapy. Oral iron affects the composition and abundance of intestinal flora by increasing intestinal iron concentration. METHODS We undertook an interventional study to investigate the effects of oral versus intravenous iron therapy on the gut microbiota. Oral ferrous succinate tablets (n = 14) or intravenous iron sucrose (n = 14) was administered to anemic maintenance hemodialysis (MHD) patients for 2 months. RESULTS Oral and intravenous iron treatments had different effects on gut microbial composition and diversity. After oral iron treatment, the α-diversity was decreased, while at the phylum level, the abundance of Firmicutes was reduced and the abundance of Bacteroides was increased. At the genus level, the abundance of Blautia and Coprococcus was decreased, and the abundance of Bacteroidetes was increased. Oral iron therapy was associated with a higher abundance of Lactobacillus compared with that measured in intravenous iron-treated patients. According to metagenome function prediction analysis, oral iron increased the metabolic processes of phenylalanine, valine, leucine, and isoleucine. These changes may increase uremic toxin levels, thereby increasing the progression of renal disease. CONCLUSION Iron therapy affects the diversity and composition of gut flora in MHD patients. Oral iron affects the number of bacteria and increases amino acid metabolism compared with intravenous iron. These results indicate that intravenous iron may be more appropriate for MHD patients.
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Affiliation(s)
- Huan Liu
- Department of Nephrology, The Fifth Clinical Medical College of Shanxi Medical University, Taiyuan, 030000 Shanxi China
| | - Wenqi Wu
- Department of Thoracic Surgery, Affiliated Hospital of Beihua University, Jilin, 132000 Jilin China
| | - Yankun Luo
- Department of Nephrology, Shanxi Provincial People's Hospital, Taiyuan, 030000, Shanxi, China.
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12
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Mayneris-Perxachs J, Moreno-Navarrete JM, Fernández-Real JM. The role of iron in host-microbiota crosstalk and its effects on systemic glucose metabolism. Nat Rev Endocrinol 2022; 18:683-698. [PMID: 35986176 DOI: 10.1038/s41574-022-00721-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/01/2022] [Indexed: 11/09/2022]
Abstract
Iron is critical for the appearance and maintenance of life on Earth. Almost all organisms compete or cooperate for iron acquisition, demonstrating the importance of this essential element for the biological and physiological processes that are key for the preservation of metabolic homeostasis. In humans and other mammals, the bidirectional interactions between the bacterial component of the gut microbiota and the host for iron acquisition shape both host and microbiota metabolism. Bacterial functions influence host iron absorption, whereas the intake of iron, iron deficiency and iron excess in the host affect bacterial biodiversity, taxonomy and function, resulting in changes in bacterial virulence. These consequences of the host-microbial crosstalk affect systemic levels of iron, its storage in different tissues and host glucose metabolism. At the interface between the host and the microbiota, alterations in the host innate immune system and in circulating soluble factors that regulate iron (that is, hepcidin, lipocalin 2 and lactoferrin) are associated with metabolic disease. In fact, patients with obesity-associated metabolic dysfunction and insulin resistance exhibit dysregulation in iron homeostasis and alterations in their gut microbiota profile. From an evolutionary point of view, the pursuit of two important nutrients - glucose and iron - has probably driven human evolution towards the most efficient pathways and genes for human survival and health.
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Affiliation(s)
- Jordi Mayneris-Perxachs
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - José María Moreno-Navarrete
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - José Manuel Fernández-Real
- Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain.
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain.
- Department of Medicine, Universitat de Girona, Girona, Spain.
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13
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Abstract
Pathobionts are opportunistic microbes that emerge as a result of perturbations in the healthy microbiome due to complex interactions of various genetic, exposomal, microbial, and host factors that lead to their selection and expansion. Their proliferations can aggravate inflammatory manifestations, trigger autoimmune diseases, and lead to severe life-threatening conditions. Current surge in microbiome research is unwinding these complex interplays between disease development and protection against pathobionts. This review summarizes the current knowledge of pathobiont emergence with a focus on Clostridioides difficile and the recent findings on the roles of immune cells such as iTreg cells, Th17 cells, innate lymphoid cells, and cytokines in protection against pathobionts. The review calls for adoption of innovative tools and cutting-edge technologies in clinical diagnostics and therapeutics to provide insights in identification and quantification of pathobionts.
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Affiliation(s)
- Harish Chandra
- Department of Environmental Microbiology, School of Earth and Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, Uttar Pradesh, India,Department of Molecular Genetics, Biochemistry and Microbiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Krishna Kant Sharma
- Laboratory of Enzymology and Recombinant DNA Technology, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Olli H. Tuovinen
- Department of Microbiology, Ohio State University, Columbus, OH, USA
| | - Xingmin Sun
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA,Xingmin Sun Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
| | - Pratyoosh Shukla
- School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi, India,Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, India,CONTACT Pratyoosh Shukla School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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14
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Gomez SY, Patel J, Lopez CA. What's metal got to do with it? Transition metals in Clostridioides difficile infection. Curr Opin Microbiol 2021; 65:116-122. [PMID: 34839238 DOI: 10.1016/j.mib.2021.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 11/27/2022]
Abstract
The enteric pathogen Clostridioides difficile overcomes barriers to colonization imposed by the microbiota and host immune response to induce disease. To navigate the dynamic gut environment, C. difficile must respond to dietary and host-mediated fluctuations in transition metal availability. Transition metals are required trace nutrients that foster inter-microbial competition when limited, inhibit bacterial growth through host sequestration, or induce toxicity in excess. This review highlights recent evidence that transition metals influence multiple stages of C. difficile colonization and that C. difficile initiates a coordinated response to maintain metal-dependent homeostasis. Further exploration of the mechanisms of C. difficile metal sensing and nutrient competition with the microbiota will be necessary for the therapeutic manipulation of the gut environment during C. difficile infection.
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Affiliation(s)
- Suzanna Y Gomez
- Department of Biological Sciences, California State University Sacramento, Sacramento, CA, United States
| | - Jay Patel
- Department of Biological Sciences, California State University Sacramento, Sacramento, CA, United States
| | - Christopher A Lopez
- Department of Biological Sciences, California State University Sacramento, Sacramento, CA, United States.
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15
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Shaler CR, Parco AA, Elhenawy W, Dourka J, Jury J, Verdu EF, Coombes BK. Psychological stress impairs IL22-driven protective gut mucosal immunity against colonising pathobionts. Nat Commun 2021; 12:6664. [PMID: 34795263 PMCID: PMC8602651 DOI: 10.1038/s41467-021-26992-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 10/28/2021] [Indexed: 12/27/2022] Open
Abstract
Crohn's disease is an inflammatory disease of the gastrointestinal tract characterized by an aberrant response to microbial and environmental triggers. This includes an altered microbiome dominated by Enterobacteriaceae and in particular adherent-invasive E. coli (AIEC). Clinical evidence implicates periods of psychological stress in Crohn's disease exacerbation, and disturbances in the gut microbiome might contribute to the pathogenic mechanism. Here we show that stress-exposed mice develop ileal dysbiosis, dominated by the expansion of Enterobacteriaceae. In an AIEC colonisation model, stress-induced glucocorticoids promote apoptosis of CD45+CD90+ cells that normally produce IL-22, a cytokine that is essential for the maintenance of ileal mucosal barrier integrity. Blockade of glucocorticoid signaling or administration of recombinant IL-22 restores mucosal immunity, prevents ileal dysbiosis, and blocks AIEC expansion. We conclude that psychological stress impairs IL-22-driven protective immunity in the gut, which creates a favorable niche for the expansion of pathobionts that have been implicated in Crohn's disease. Importantly, this work also shows that immunomodulation can counteract the negative effects of psychological stress on gut immunity and hence disease-associated dysbiosis.
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Affiliation(s)
- Christopher R Shaler
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada
| | - Alexandra A Parco
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada
| | - Wael Elhenawy
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada
| | - Jasmeen Dourka
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada
| | - Jennifer Jury
- Farncombe Family Digestive Health Research Institute, Hamilton, ON, Canada
| | - Elena F Verdu
- Farncombe Family Digestive Health Research Institute, Hamilton, ON, Canada
| | - Brian K Coombes
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada.
- Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada.
- Farncombe Family Digestive Health Research Institute, Hamilton, ON, Canada.
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16
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Sagar P, Singh V, Gupta R, Kaul S, Sharma S, Kaur S, Bhunia RK, Kondepudi KK, Singhal NK. pH-Triggered, Synbiotic Hydrogel Beads for In Vivo Therapy of Iron Deficiency Anemia and Reduced Inflammatory Response. ACS Appl Bio Mater 2021; 4:7467-7484. [PMID: 35006707 DOI: 10.1021/acsabm.1c00720] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Iron deficiency anemia (IDA) is the most common nutritional disorder worldwide nearly affecting two billion people. The efficacies of conventional oral iron supplements are mixed, intravenous iron administration acquaintances with finite but crucial risks. Usually, only 5-20% iron is absorbed in the duodenum while the remaining fraction reaches the colon, affecting the gut microbes and can significantly impact intestinal inflammatory responses. Therefore, administration of gut bacterial modulators such as probiotics, prebiotics, and any other dietary molecules that can stimulate healthy gut bacteria can enhance iron absorption without any adverse side effects. In this study, we have prepared an iron supplement to avoid the side effects of conventional oral iron supplements. The formulation includes co-encapsulation of iron with anti-inflammatory probiotic bacteria within alginate/starch hydrogels (B + I-Dex (H)), which has been demonstrated to be efficient in mitigating IDA in vivo. As intestinal pH increases, the pore size of hydrogel increases due to ionic interactions and thus releases the encapsulated bacteria and iron. The field emission scanning electron microscopy (FESEM) analysis confirmed the porous structure of hydrogel beads, and in vitro release studies showed a sustained release of iron and bacteria at intestinal pH. The hydrogel was found to be nontoxic and biocompatible in Caco2 cell lines. The formulation showed efficient in vitro and in vivo iron bioavailability in Fe depletion-repletion studies. B + I-Dex (H) was observed to generate less inflammatory response than FeSO4 or nonencapsulated iron dextran (I-Dex) in vivo. We entrust that this duly functional hydrogel formulation could be further utilized or modified for the development of oral therapeutics for IDA.
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Affiliation(s)
- Poonam Sagar
- National Agri-Food Biotechnology Institute, Sector-81 Mohali, Sahibzada Ajit Singh Nagar 140306, Punjab, India.,Department of Biotechnology, Panjab University Chandigarh, Sector 25, Chandigarh 160014, Punjab, India
| | - Vishal Singh
- National Agri-Food Biotechnology Institute, Sector-81 Mohali, Sahibzada Ajit Singh Nagar 140306, Punjab, India
| | - Ritika Gupta
- National Agri-Food Biotechnology Institute, Sector-81 Mohali, Sahibzada Ajit Singh Nagar 140306, Punjab, India.,Department of Biotechnology, Panjab University Chandigarh, Sector 25, Chandigarh 160014, Punjab, India
| | - Sunaina Kaul
- National Agri-Food Biotechnology Institute, Sector-81 Mohali, Sahibzada Ajit Singh Nagar 140306, Punjab, India.,Department of Biotechnology, Panjab University Chandigarh, Sector 25, Chandigarh 160014, Punjab, India
| | - Shikha Sharma
- National Agri-Food Biotechnology Institute, Sector-81 Mohali, Sahibzada Ajit Singh Nagar 140306, Punjab, India.,Department of Biotechnology, Panjab University Chandigarh, Sector 25, Chandigarh 160014, Punjab, India
| | - Simranjit Kaur
- National Agri-Food Biotechnology Institute, Sector-81 Mohali, Sahibzada Ajit Singh Nagar 140306, Punjab, India
| | - Rupam Kumar Bhunia
- National Agri-Food Biotechnology Institute, Sector-81 Mohali, Sahibzada Ajit Singh Nagar 140306, Punjab, India
| | - Kanthi Kiran Kondepudi
- National Agri-Food Biotechnology Institute, Sector-81 Mohali, Sahibzada Ajit Singh Nagar 140306, Punjab, India
| | - Nitin Kumar Singhal
- National Agri-Food Biotechnology Institute, Sector-81 Mohali, Sahibzada Ajit Singh Nagar 140306, Punjab, India
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17
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Cuisiniere T, Calvé A, Fragoso G, Oliero M, Hajjar R, Gonzalez E, Santos MM. Oral iron supplementation after antibiotic exposure induces a deleterious recovery of the gut microbiota. BMC Microbiol 2021; 21:259. [PMID: 34583649 PMCID: PMC8480066 DOI: 10.1186/s12866-021-02320-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 09/16/2021] [Indexed: 02/08/2023] Open
Abstract
Background Oral iron supplementation is commonly prescribed for anemia and may play an important role in the gut microbiota recovery of anemic individuals who received antibiotic treatment. This study aims to investigate the effects of iron supplementation on gut microbiota recovery after antibiotics exposure. Results Mice were subjected to oral antibiotic treatment with neomycin and metronidazole and were fed diets with different concentrations of iron. The composition of the gut microbiota was followed throughout treatment by 16S rRNA sequencing of DNA extracted from fecal samples. Gut microbiota functions were inferred using PICRUSt2, and short-chain fatty acid concentration in fecal samples was assessed by liquid-chromatography mass spectrometry. Iron supplementation after antibiotic exposure shifted the gut microbiota composition towards a Bacteroidetes phylum-dominant composition. At the genus level, the iron-supplemented diet induced an increase in the abundance of Parasutterella and Bacteroides, and a decrease of Bilophila and Akkermansia. Parasutterella excrementihominis, Bacteroides vulgatus, and Alistipes finegoldii, were more abundant with the iron excess diet. Iron-induced shifts in microbiota composition were accompanied by functional modifications, including an enhancement of the biosynthesis of primary bile acids, nitrogen metabolism, cyanoamino acid metabolism and pentose phosphate pathways. Recovery after antibiotic treatment increased propionate levels independent of luminal iron levels, whereas butyrate levels were diminished by excess iron. Conclusions Oral iron supplementation after antibiotic therapy in mice may lead to deleterious changes in the recovery of the gut microbiota. Our results have implications on the use of oral iron supplementation after antibiotic exposure and justify further studies on alternative treatments for anemia in these settings. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02320-0.
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Affiliation(s)
- Thibault Cuisiniere
- Nutrition and Microbiome Laboratory, Institut du cancer de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), CRCHUM - R10.426, 900 rue Saint-Denis, Montréal, Québec, H2X 0A9, Canada
| | - Annie Calvé
- Nutrition and Microbiome Laboratory, Institut du cancer de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), CRCHUM - R10.426, 900 rue Saint-Denis, Montréal, Québec, H2X 0A9, Canada
| | - Gabriela Fragoso
- Nutrition and Microbiome Laboratory, Institut du cancer de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), CRCHUM - R10.426, 900 rue Saint-Denis, Montréal, Québec, H2X 0A9, Canada
| | - Manon Oliero
- Nutrition and Microbiome Laboratory, Institut du cancer de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), CRCHUM - R10.426, 900 rue Saint-Denis, Montréal, Québec, H2X 0A9, Canada
| | - Roy Hajjar
- Nutrition and Microbiome Laboratory, Institut du cancer de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), CRCHUM - R10.426, 900 rue Saint-Denis, Montréal, Québec, H2X 0A9, Canada.,Digestive Surgery Service, Centre hospitalier de l'Université de Montréal, Montréal, Canada
| | - Emmanuel Gonzalez
- Canadian Centre for Computational Genomics, Department of Human Genetics; and Microbiome Platform Research, McGill Interdisciplinary Initiative in Infection and Immunity, McGill University, Montréal, Canada
| | - Manuela M Santos
- Nutrition and Microbiome Laboratory, Institut du cancer de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), CRCHUM - R10.426, 900 rue Saint-Denis, Montréal, Québec, H2X 0A9, Canada. .,Department of Medicine, Faculty of Medicine, Université de Montréal, Montréal, Canada.
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18
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Underwood MA, Lakshminrusimha S, Steinhorn RH, Wedgwood S. Malnutrition, poor post-natal growth, intestinal dysbiosis and the developing lung. J Perinatol 2021; 41:1797-810. [PMID: 33057133 DOI: 10.1038/s41372-020-00858-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/07/2020] [Accepted: 09/26/2020] [Indexed: 01/31/2023]
Abstract
In extremely preterm infants, poor post-natal growth, intestinal dysbiosis and bronchopulmonary dysplasia are common, and each is associated with long-term complications. The central hypothesis that this review will address is that these three common conditions are interrelated. Challenges to studying this hypothesis include the understanding that malnutrition and poor post-natal growth are not synonymous and that there is not agreement on what constitutes a normal intestinal microbiota in this evolutionarily new population. If this hypothesis is supported, further study of whether "correcting" intestinal dysbiosis in extremely preterm infants reduces postnatal growth restriction and/or bronchopulmonary dysplasia is indicated.
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19
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Lopez LR, Barlogio CJ, Broberg CA, Wang J, Arthur JC. A nadA Mutation Confers Nicotinic Acid Auxotrophy in Pro-carcinogenic Intestinal Escherichia coli NC101. Front Microbiol 2021; 12:670005. [PMID: 34149655 PMCID: PMC8207962 DOI: 10.3389/fmicb.2021.670005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/12/2021] [Indexed: 12/12/2022] Open
Abstract
Inflammatory bowel diseases (IBDs) and inflammation-associated colorectal cancer (CRC) are linked to blooms of adherent-invasive Escherichia coli (AIEC) in the intestinal microbiota. AIEC are functionally defined by their ability to adhere/invade epithelial cells and survive/replicate within macrophages. Changes in micronutrient availability can alter AIEC physiology and interactions with host cells. Thus, culturing AIEC for mechanistic investigations often involves precise nutrient formulation. We observed that the pro-inflammatory and pro-carcinogenic AIEC strain NC101 failed to grow in minimal media (MM). We hypothesized that NC101 was unable to synthesize a vital micronutrient normally found in the host gut. Through nutrient supplementation studies, we identified that NC101 is a nicotinic acid (NA) auxotroph. NA auxotrophy was not observed in the other non-toxigenic E. coli or AIEC strains we tested. Sequencing revealed NC101 has a missense mutation in nadA, a gene encoding quinolinate synthase A that is important for de novo nicotinamide adenine dinucleotide (NAD) biosynthesis. Correcting the identified nadA point mutation restored NC101 prototrophy without impacting AIEC function, including motility and AIEC-defining survival in macrophages. Our findings, along with the generation of a prototrophic NC101 strain, will greatly enhance the ability to perform in vitro functional studies that are needed for mechanistic investigations on the role of intestinal E. coli in digestive disease.
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Affiliation(s)
- Lacey R Lopez
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Cassandra J Barlogio
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Christopher A Broberg
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Jeremy Wang
- Department of Genetics, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Janelle C Arthur
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Center for Gastrointestinal Biology and Disease, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
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20
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DeJong EN, Surette MG, Bowdish DME. The Gut Microbiota and Unhealthy Aging: Disentangling Cause from Consequence. Cell Host Microbe 2021; 28:180-189. [PMID: 32791111 DOI: 10.1016/j.chom.2020.07.013] [Citation(s) in RCA: 139] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/03/2020] [Accepted: 07/21/2020] [Indexed: 12/20/2022]
Abstract
The gut microbiota changes with age, but it is not clear to what degree these changes are due to physiologic changes, age-associated inflammation or immunosenescence, diet, medications, or chronic health conditions. Observational studies in humans find that there are profound differences between the microbiomes of long-lived and frail individuals, but the degree to which these differences promote or prevent late-life health is unclear. Studies in model organisms demonstrate that age-related microbial dysbiosis causes intestinal permeability, systemic inflammation, and premature mortality, but identifying causal relationships have been challenging. Herein, we review how physiological and immune changes contribute to microbial dysbiosis and the degree to which microbial dysbiosis contributes to late-life health conditions. We discuss the features of the aging microbiota that make it more amenable to diet and pre- and probiotic interventions. Health interventions that promote a diverse microbiome could influence the health of older adults.
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Affiliation(s)
- Erica N DeJong
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON L8N 3Z5, Canada; McMaster Immunology Research Centre, McMaster University, Hamilton, ON L8N 3Z5, Canada; Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, ON L8N 3Z5, Canada
| | - Michael G Surette
- Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, ON L8N 3Z5, Canada; Department of Biochemistry & Biomedical Sciences, McMaster University, Hamilton, ON L8N 3Z5, Canada; Department of Medicine, McMaster University, Hamilton, ON L8N 3Z5, Canada; Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON L8N 3Z5, Canada
| | - Dawn M E Bowdish
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON L8N 3Z5, Canada; McMaster Immunology Research Centre, McMaster University, Hamilton, ON L8N 3Z5, Canada; Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, ON L8N 3Z5, Canada.
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21
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Ribeiro M, Fonseca L, Anjos JS, Capo-Chichi JCC, Borges NA, Burrowes J, Mafra D. Oral iron supplementation in patients with chronic kidney disease: Can it be harmful to the gut microbiota? Nutr Clin Pract 2021; 37:81-93. [PMID: 33979013 DOI: 10.1002/ncp.10662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Patients with chronic kidney disease (CKD) have several pathophysiological alterations, including anemia, one of the first changes in CKD patients. More recently, researchers have observed that the intestinal microbiota alterations are also another complication in these patients. The most common treatment for anemia is oral (mainly ferrous sulfate) or intravenous iron supplementation. Despite being a necessary treatment, recent studies have reported that supplementation with oral iron may increase its availability in the intestine, leading to disturbance in the gut microbiota and also to oxidative stress in the enterocytes, which may change the permeability and the microbiota profile. Although it is a therapy routinely used in patients with CKD, supplementation with oral iron on the gut microbiota has been rarely studied in these patients. Thus, this review will discuss the relationship between iron and the gut microbiota and the possible effects of oral iron supplementation on gut microbiota in patients with CKD.
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Affiliation(s)
- Marcia Ribeiro
- Graduate Program in Nutrition Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil.,Unidade de Pesquisa Clinica (UPC)-University Hospital Antonio Pedro, Niterói, Rio de Janeiro, Brazil
| | - Larissa Fonseca
- Unidade de Pesquisa Clinica (UPC)-University Hospital Antonio Pedro, Niterói, Rio de Janeiro, Brazil.,Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
| | - Juliana S Anjos
- Unidade de Pesquisa Clinica (UPC)-University Hospital Antonio Pedro, Niterói, Rio de Janeiro, Brazil.,Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
| | - Jean C C Capo-Chichi
- Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
| | - Natália A Borges
- Institute of Nutrition, Rio de Janeiro State University (UERJ), Rio de Janeiro, RJ, Brazil
| | | | - Denise Mafra
- Graduate Program in Nutrition Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil.,Unidade de Pesquisa Clinica (UPC)-University Hospital Antonio Pedro, Niterói, Rio de Janeiro, Brazil.,Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil.,Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil
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22
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Mahalhal A, Burkitt MD, Duckworth CA, Hold GL, Campbell BJ, Pritchard DM, Probert CS. Long-Term Iron Deficiency and Dietary Iron Excess Exacerbate Acute Dextran Sodium Sulphate-Induced Colitis and Are Associated with Significant Dysbiosis. Int J Mol Sci 2021; 22:3646. [PMID: 33807459 PMCID: PMC8037348 DOI: 10.3390/ijms22073646] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Oral iron supplementation causes gastrointestinal side effects. Short-term alterations in dietary iron exacerbate inflammation and alter the gut microbiota, in murine models of colitis. Patients typically take supplements for months. We investigated the impact of long-term changes in dietary iron on colitis and the microbiome in mice. METHODS We fed mice chow containing differing levels of iron, reflecting deficient (100 ppm), normal (200 ppm), and supplemented (400 ppm) intake for up to 9 weeks, both in absence and presence of dextran sodium sulphate (DSS)-induced chronic colitis. We also induced acute colitis in mice taking these diets for 8 weeks. Impact was assessed (i) clinically and histologically, and (ii) by sequencing the V4 region of 16S rRNA. RESULTS In mice with long-term changes, the iron-deficient diet was associated with greater weight loss and histological inflammation in the acute colitis model. Chronic colitis was not influenced by altering dietary iron however there was a change in the microbiome in DSS-treated mice consuming 100 ppm and 400 ppm iron diets, and control mice consuming the 400 ppm iron diet. Proteobacteria levels increased significantly, and Bacteroidetes levels decreased, in the 400 ppm iron DSS group at day-63 compared to baseline. CONCLUSIONS Long-term dietary iron alterations affect gut microbiota signatures but do not exacerbate chronic colitis, however acute colitis is exacerbated by such dietary changes. More work is needed to understand the impact of iron supplementation on IBD. The change in the microbiome, in patients with colitis, may arise from the increased luminal iron and not simply from colitis.
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Affiliation(s)
- Awad Mahalhal
- Department of Molecular and Cellular Cancer Medicine, Institute of Systems, Molecular and Integrated Biology, University of Liverpool, Liverpool L69 3GE, UK; (A.M.); (D.M.P.)
- Department of Anatomy and Histology, Faculty of Medicine, Benghazi University, Benghazi, Libya
| | - Michael D. Burkitt
- Division of Diabetes Endocrinology and Gastroenterology, Faculty of Biology Medicine and Health, University of Manchester, Manchester M13 9PL, UK;
| | - Carrie A. Duckworth
- Molecular Physiology and Cell Signalling, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L69 3GE, UK;
| | - Georgina L. Hold
- Microbiome Research Centre, St George & Sutherland Clinical School, Clinical Sciences (Pitney) Building, University of New South Wales Sydney, Kogarah, NSW 2217, Australia;
| | - Barry J. Campbell
- Department of Infection Biology & Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L69 3GE, UK;
| | - David Mark Pritchard
- Department of Molecular and Cellular Cancer Medicine, Institute of Systems, Molecular and Integrated Biology, University of Liverpool, Liverpool L69 3GE, UK; (A.M.); (D.M.P.)
| | - Chris S. Probert
- Department of Molecular and Cellular Cancer Medicine, Institute of Systems, Molecular and Integrated Biology, University of Liverpool, Liverpool L69 3GE, UK; (A.M.); (D.M.P.)
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23
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Stecher B. Establishing causality in Salmonella-microbiota-host interaction: The use of gnotobiotic mouse models and synthetic microbial communities. Int J Med Microbiol 2021; 311:151484. [PMID: 33756190 DOI: 10.1016/j.ijmm.2021.151484] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 01/07/2021] [Accepted: 02/23/2021] [Indexed: 02/07/2023] Open
Abstract
Colonization resistance (CR), the ability to block infections by potentially harmful microbes, is a fundamental function of host-associated microbial communities and highly conserved between animals and humans. Environmental factors such as antibiotics and diet can disturb microbial community composition and thereby predispose to opportunistic infections. The most prominent is Clostridioides difficile, the causative agent of diarrhea and pseudomembranous colitis. In addition, the risk to succumb to infections with genuine human enteric pathogens like nontyphoidal Salmonella (NTS) is also increased by a low-diverse, diet or antibiotic-disrupted microbiota. Despite extensive microbial community profiling efforts, only a limited set of microorganisms have been causally linked with protection against enteric pathogens. Furthermore, it remains a challenge to predict colonization resistance from complex microbiome signatures due to context-dependent action of microorganisms. In the past decade, the study of NTS infection has led to the description of several fundamental principles of microbiota-host-pathogen interaction. In this review, I will give an overview on the current state of knowledge in this field and outline experimental approaches to gain functional insight to the role of specific microbes, functions and metabolites in Salmonella-microbiota-host interaction. In particular, I will highlight the value of mouse infection models, which, in combination with culture collections, synthetic communities and gnotobiotic models have become essential tools to screen for protective members of the microbiota and establishing causal relationship and mechanisms in infection research.
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24
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Alemao CA, Budden KF, Gomez HM, Rehman SF, Marshall JE, Shukla SD, Donovan C, Forster SC, Yang IA, Keely S, Mann ER, El Omar EM, Belz GT, Hansbro PM. Impact of diet and the bacterial microbiome on the mucous barrier and immune disorders. Allergy 2021; 76:714-734. [PMID: 32762040 DOI: 10.1111/all.14548] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 07/10/2020] [Accepted: 07/30/2020] [Indexed: 12/11/2022]
Abstract
The prevalence of chronic immune and metabolic disorders is increasing rapidly. In particular, inflammatory bowel diseases, obesity, diabetes, asthma and chronic obstructive pulmonary disease have become major healthcare and economic burdens worldwide. Recent advances in microbiome research have led to significant discoveries of associative links between alterations in the microbiome and health, as well as these chronic supposedly noncommunicable, immune/metabolic disorders. Importantly, the interplay between diet, microbiome and the mucous barrier in these diseases has gained significant attention. Diet modulates the mucous barrier via alterations in gut microbiota, resulting in either disease onset/exacerbation due to a "poor" diet or protection against disease with a "healthy" diet. In addition, many mucosa-associated disorders possess a specific gut microbiome fingerprint associated with the composition of the mucous barrier, which is further influenced by host-microbiome and inter-microbial interactions, dietary choices, microbe immigration and antimicrobials. Our review focuses on the interactions of diet (macronutrients and micronutrients), gut microbiota and mucous barriers (gastrointestinal and respiratory tract) and their importance in the onset and/or progression of major immune/metabolic disorders. We also highlight the key mechanisms that could be targeted therapeutically to prevent and/or treat these disorders.
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Affiliation(s)
- Charlotte A. Alemao
- Priority Research Centre for Healthy Lungs Hunter Medical Research Institute New Lambton, Newcastle NSW Australia
- The University of Newcastle Newcastle NSW Australia
| | - Kurtis F. Budden
- Priority Research Centre for Healthy Lungs Hunter Medical Research Institute New Lambton, Newcastle NSW Australia
- The University of Newcastle Newcastle NSW Australia
| | - Henry M. Gomez
- Priority Research Centre for Healthy Lungs Hunter Medical Research Institute New Lambton, Newcastle NSW Australia
- The University of Newcastle Newcastle NSW Australia
| | - Saima F. Rehman
- Priority Research Centre for Healthy Lungs Hunter Medical Research Institute New Lambton, Newcastle NSW Australia
- The University of Newcastle Newcastle NSW Australia
| | - Jacqueline E. Marshall
- Faculty of Science Centre for Inflammation Centenary Institute University of Technology Sydney Sydney NSW Australia
| | - Shakti D. Shukla
- Priority Research Centre for Healthy Lungs Hunter Medical Research Institute New Lambton, Newcastle NSW Australia
- The University of Newcastle Newcastle NSW Australia
| | - Chantal Donovan
- Faculty of Science Centre for Inflammation Centenary Institute University of Technology Sydney Sydney NSW Australia
| | - Samuel C. Forster
- Department of Molecular and Translational Sciences Hudson Institute of Medical Research Centre for Innate Immunity and Infectious Diseases Monash University Clayton VIC Australia
| | - Ian A. Yang
- Thoracic Program The Prince Charles Hospital Metro North Hospital and Health Service Brisbane QLD Australia
- Faculty of Medicine UQ Thoracic Research Centre The University of Queensland Brisbane QLD Australia
| | - Simon Keely
- Hunter Medical Research Institute Priority Research Centre for Digestive Health and Neurogastroenterology University of Newcastle New Lambton Heights NSW Australia
| | - Elizabeth R. Mann
- Lydia Becker Institute of Immunology and Inflammation University of Manchester Manchester UK
- Faculty of Biology Medicine and Health Manchester Collaborative Centre for Inflammation Research Manchester Academic Health Science Centre University of Manchester Manchester UK
| | - Emad M. El Omar
- St George & Sutherland Clinical School Microbiome Research Centre University of New South Wales Sydney NSW Australia
| | - Gabrielle T. Belz
- Diamantina Institute University of Queensland Woolloongabba QLD Australia
- Department of Medical Biology Walter and Eliza Hall Institute of Medical Research University of Melbourne Parkville VIC Australia
| | - Philip M. Hansbro
- Priority Research Centre for Healthy Lungs Hunter Medical Research Institute New Lambton, Newcastle NSW Australia
- The University of Newcastle Newcastle NSW Australia
- Faculty of Science Centre for Inflammation Centenary Institute University of Technology Sydney Sydney NSW Australia
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25
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Abstract
Bacterial colonization of the intestines occurs during the first 2 years of life. Homeostasis of the gut microbiome is established to foster normal intestinal immune development for adulthood. Derangements in this process can interfere with immune function and increase an individual's risk for gastrointestinal disorders. We discuss the role of diet and the microbiome on the onset of such disorders. We examine how micronutrients, prebiotics, and probiotics modulate disease pathogenesis. We discuss how diet and abnormal microbial colonization impact extraintestinal organs. Understanding the communication of nutrition and the microbiome offers exciting opportunities for therapeutics.
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Affiliation(s)
- Joann Romano-Keeler
- Division of Neonatology, Department of Pediatrics, University of Illinois at Chicago, 840 South Wood Street, MC 856, Suite 1252, Chicago, IL 60612, USA
| | - Jilei Zhang
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, 840 South Wood Street, Room 704 CSB, MC716, Chicago, IL 60612, USA
| | - Jun Sun
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, 840 South Wood Street, Room 704 CSB, MC716, Chicago, IL 60612, USA; University of Illinois Cancer Center, 818 South Wolcott Avenue, Chicago, IL 60612, USA.
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26
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Liu Y, Wang T, Si B, Du H, Liu Y, Waqas A, Huang S, Zhao G, Chen S, Xu A. Intratracheally instillated diesel PM 2.5 significantly altered the structure and composition of indigenous murine gut microbiota. Ecotoxicol Environ Saf 2021; 210:111903. [PMID: 33429322 DOI: 10.1016/j.ecoenv.2021.111903] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 12/30/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
A diverse and large community of gut microbiota reside in the intestinal tract of various organisms and play important roles in metabolism and immune homeostasis of its host. The disorders of microbiota-host interaction have been closely associated with numerous chronic inflammatory and metabolic diseases, including inflammatory bowel disease and type 2 diabetes. The accumulating evidence has shown that fine particulate matter (PM2.5) exposure contributes to the diabetes, atherosclerosis and inflammatory bowel diseases; however, few studies have explored the impact of inhaled diesel PM2.5 on gut microbiota in vivo. In this study, C57BL/6J mice were exposed to diesel PM2.5 for 14 days via intratracheal instillation, and colon tissues and feces were harvested for microbiota analysis. Using high-throughput sequencing technology, we observed that intratracheally instillated diesel PM2.5 significantly altered the gut microbiota diversity and community. At the phylum and genus levels, principal coordinate analysis (PCoA) and principal component analysis (PCA) indicated pronounced segregation of microbiota compositions, which were further confirmed by β diversity analysis. As the most affected phylum, Bacteroidetes was greatly diminished by diesel PM2.5. On the genus level, Escherichia, Parabacteroides, Akkermansia, and Oscillibacter were significantly elevated by diesel PM2.5 exposure. Our findings provided clear evidence that exposure to diesel PM2.5 via intratracheal instillation deteriorated the gastrointestinal (GI) tract and significantly altered the structure and composition of gut microbiota, which might subsequently contribute to the developmental abnormalities of inflammation, immunity and metabolism.
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Affiliation(s)
- Ying Liu
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS; Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory of Hefei Institutes of Physical Science, CAS, Hefei, Anhui 230031, China; University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Tong Wang
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS; Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory of Hefei Institutes of Physical Science, CAS, Hefei, Anhui 230031, China; University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Bo Si
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS; Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory of Hefei Institutes of Physical Science, CAS, Hefei, Anhui 230031, China; University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Hua Du
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS; Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory of Hefei Institutes of Physical Science, CAS, Hefei, Anhui 230031, China
| | - Yun Liu
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS; Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory of Hefei Institutes of Physical Science, CAS, Hefei, Anhui 230031, China
| | - Ahmed Waqas
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS; Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory of Hefei Institutes of Physical Science, CAS, Hefei, Anhui 230031, China
| | - Shengwei Huang
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS; Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory of Hefei Institutes of Physical Science, CAS, Hefei, Anhui 230031, China
| | - Guoping Zhao
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS; Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory of Hefei Institutes of Physical Science, CAS, Hefei, Anhui 230031, China
| | - Shaopeng Chen
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS; Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory of Hefei Institutes of Physical Science, CAS, Hefei, Anhui 230031, China
| | - An Xu
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS; Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, High Magnetic Field Laboratory of Hefei Institutes of Physical Science, CAS, Hefei, Anhui 230031, China; Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China.
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27
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Kundra P, Rachmühl C, Lacroix C, Geirnaert A. Role of Dietary Micronutrients on Gut Microbial Dysbiosis and Modulation in Inflammatory Bowel Disease. Mol Nutr Food Res 2021. [DOI: 10.1002/mnfr.201901271] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Palni Kundra
- Laboratory of Food Biotechnology Institute of Food Nutrition and Health Schmelzbergstrasse 7 Zürich 8092 Switzerland
| | - Carole Rachmühl
- Laboratory of Food Biotechnology Institute of Food Nutrition and Health Schmelzbergstrasse 7 Zürich 8092 Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology Institute of Food Nutrition and Health Schmelzbergstrasse 7 Zürich 8092 Switzerland
| | - Annelies Geirnaert
- Laboratory of Food Biotechnology Institute of Food Nutrition and Health Schmelzbergstrasse 7 Zürich 8092 Switzerland
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28
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Li CY, Li XY, Shen L, Ji HF. Regulatory effects of transition metals supplementation/deficiency on the gut microbiota. Appl Microbiol Biotechnol 2021; 105:1007-1015. [PMID: 33449129 DOI: 10.1007/s00253-021-11096-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/22/2020] [Accepted: 01/03/2021] [Indexed: 12/13/2022]
Abstract
Transition metal ions are essential micronutrients for all living organisms and exert a wide range of effects on human health. The uptake of transition metal ions occurs primarily in the gastrointestinal tract, which is colonized by trillions of bacterial cells. In recent years, increasing studies have indicated that transition metals have regulatory effects on the gut microbiota. In view of the significant effect of the gut microbiota on human health and involvement in the pathogenesis of a wide range of diseases, in this paper, we provide a comprehensive discussion on the regulatory effects of four kinds of transition metal ions on the gut microbiota. A total of 20 animal model and human studies concerning the regulatory effects of four types of transition metal ions (i.e., iron, copper, zinc, and manganese) on gut microbiota were summarized. Both the deficiency and supplementation of these transition metal ions on the gut microbiota were considered. Furthermore, the potential mechanisms governing the regulatory effects of transition metal ions on the gut microbiota were also discussed. KEY POINTS : • Regulatory effects of iron, copper, zinc, and manganese on gut microbiota were reviewed. • Both deficiency and supplementation of metal ions on gut microbiota were considered. • Mechanisms governing effects of metal ions on gut microbiota were discussed.
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Affiliation(s)
- Cheng-Yu Li
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China.,Shandong Provincial Research Center for Bioinformatic Engineering and Technique, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China
| | - Xin-Yu Li
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China.,Shandong Provincial Research Center for Bioinformatic Engineering and Technique, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China
| | - Liang Shen
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China. .,Shandong Provincial Research Center for Bioinformatic Engineering and Technique, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China.
| | - Hong-Fang Ji
- Institute of Biomedical Research, Shandong University of Technology, Zibo, Shandong, People's Republic of China. .,Shandong Provincial Research Center for Bioinformatic Engineering and Technique, School of Life Sciences, Shandong University of Technology, Zibo, Shandong, People's Republic of China.
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29
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Coe GL, Pinkham NV, Celis AI, Johnson C, DuBois JL, Walk ST. Dynamic Gut Microbiome Changes in Response to Low-Iron Challenge. Appl Environ Microbiol 2021; 87:e02307-20. [PMID: 33188000 PMCID: PMC7848906 DOI: 10.1128/aem.02307-20] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 11/03/2020] [Indexed: 01/05/2023] Open
Abstract
Iron is an essential micronutrient for life. In mammals, dietary iron is absorbed primarily in the small intestine. Currently, the impacts of dietary iron on the taxonomic structure and function of the gut microbiome and reciprocal effects on the animal host are not well understood. Here, we establish a mouse model of low-iron challenge in which intestinal biomarkers and reduced fecal iron reveal iron stress while serum iron and mouse behavioral markers indicate maintenance of iron homeostasis. We show that the diversity of the gut microbiome in conventional C57BL/6 mice changes dramatically during 2 weeks on a low-iron diet. We also show the effects of a low-iron diet on microbiome diversity are long lasting and not easily recovered when iron is returned to the diet. Finally, after optimizing taxon association methods, we show that some bacteria are unable to fully recover after the low-iron challenge and appear to be extirpated from the gut entirely. In particular, operational taxonomic units (OTUs) from the Prevotellaceae and Porphyromonadaceae families and Bacteroidales order are highly sensitive to low-iron conditions, while other seemingly insensitive OTUs recover. These results provide new insights into the iron requirements of gut microbiome members and add to the growing understanding of mammalian iron cycling.IMPORTANCE All cells need iron. Both too much and too little iron lead to diseases and unwanted outcomes. Although the impact of dietary iron on human cells and tissues has been well studied, there is currently a lack of understanding about how different levels of iron influence the abundant and diverse members of the human microbiome. This study develops a well-characterized mouse model for studying low-iron levels and identifies key groups of bacteria that are most affected. We found that the microbiome undergoes large changes when iron is removed from the diet but that many individual bacteria are able to rebound when iron levels are changed back to normal. That said, a select few members, referred to as iron-sensitive bacteria, seem to be lost. This study begins to identify individual members of the mammalian microbiome most affected by changes in dietary iron levels.
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Affiliation(s)
- Genevieve L Coe
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana, USA
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana, USA
| | - Nicholas V Pinkham
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana, USA
| | - Arianna I Celis
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana, USA
| | - Christina Johnson
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana, USA
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana, USA
| | - Jennifer L DuBois
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana, USA
| | - Seth T Walk
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana, USA
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30
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Poveda C, Pereira DIA, Lewis M, Walton GE. The Impact of Low-Level Iron Supplements on the Faecal Microbiota of Irritable Bowel Syndrome and Healthy Donors Using In Vitro Batch Cultures. Nutrients 2020; 12:E3819. [PMID: 33327501 DOI: 10.3390/nu12123819] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 11/30/2020] [Accepted: 12/08/2020] [Indexed: 12/14/2022] Open
Abstract
Ferrous iron supplementation has been reported to adversely alter the gut microbiota in infants. To date, the impact of iron on the adult microbiota is limited, particularly at low supplementary concentrations. The aim of this research was to explore the impact of low-level iron supplementation on the gut microbiota of healthy and Irritable Bowel Syndrome (IBS) volunteers. Anaerobic, pH-controlled in vitro batch cultures were inoculated with faeces from healthy or IBS donors along with iron (ferrous sulphate, nanoparticulate iron and pea ferritin (50 μmol−1 iron)). The microbiota were explored by fluorescence in situ hybridisation coupled with flow cytometry. Furthermore, metabolite production was assessed by gas chromatography. IBS volunteers had different starting microbial profiles to healthy controls. The sources of iron did not negatively impact the microbial population, with results of pea ferritin supplementation being similar to nanoparticulate iron, whilst ferrous sulphate led to enhanced Bacteroides spp. The metabolite data suggested no shift to potentially negative proteolysis. The results indicate that low doses of iron from the three sources were not detrimental to the gut microbiota. This is the first time that pea ferritin fermentation has been tested and indicates that low dose supplementation of iron is unlikely to be detrimental to the gut microbiota.
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31
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Phipps O, Al-Hassi HO, Quraishi MN, Kumar A, Brookes MJ. Influence of Iron on the Gut Microbiota in Colorectal Cancer. Nutrients 2020; 12:nu12092512. [PMID: 32825236 PMCID: PMC7551435 DOI: 10.3390/nu12092512] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/07/2020] [Accepted: 08/14/2020] [Indexed: 12/11/2022] Open
Abstract
Perturbations of the colonic microbiota can contribute to the initiation and progression of colorectal cancer, leading to an increase in pathogenic bacteria at the expense of protective bacteria. This can contribute to disease through increasing carcinogenic metabolite/toxin production, inducing inflammation, and activating oncogenic signaling. To limit disease progression, external factors that may influence the colonic microbiota need to be considered in patients with colorectal cancer. One major factor that can influence the colonic microbiota is iron. Iron is an essential micronutrient that is required by both prokaryotes and eukaryotes for cellular function. Most pathogenic bacteria have heightened iron acquisition mechanisms and therefore tend to outcompete protective bacteria for free iron. Colorectal cancer patients often present with anemia due to iron deficiency, and thus they require iron therapy. Depending upon the route of administration, iron therapy has the potential to contribute to a procarciongenic microbiota. Orally administered iron is the common treatment for anemia in these patients but can lead to an increased gut iron concentration. This suggests the need to reassess the route of iron therapy in these patients. Currently, this has only been assessed in murine studies, with human trials being necessary to unravel the potential microbial outcomes of iron therapy.
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Affiliation(s)
- Oliver Phipps
- Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK; (H.O.A.-H.); (A.K.); (M.J.B.)
- Correspondence:
| | - Hafid O. Al-Hassi
- Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK; (H.O.A.-H.); (A.K.); (M.J.B.)
| | - Mohammed N. Quraishi
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham B15 2TT, UK;
| | - Aditi Kumar
- Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK; (H.O.A.-H.); (A.K.); (M.J.B.)
- Royal Wolverhampton Hospitals NHS Trust, Gastroenterology Unit, Wolverhampton WV10 0QP, UK
| | - Matthew J. Brookes
- Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK; (H.O.A.-H.); (A.K.); (M.J.B.)
- Royal Wolverhampton Hospitals NHS Trust, Gastroenterology Unit, Wolverhampton WV10 0QP, UK
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