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Han A, Hudson-Paz C, Robinson BG, Becker L, Jacobson A, Kaltschmidt JA, Garrison JL, Bhatt AS, Monack DM. Temperature-dependent differences in mouse gut motility are mediated by stress. Lab Anim (NY) 2024; 53:148-159. [PMID: 38806681 PMCID: PMC11147774 DOI: 10.1038/s41684-024-01376-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 04/19/2024] [Indexed: 05/30/2024]
Abstract
Researchers have advocated elevating mouse housing temperatures from the conventional ~22 °C to the mouse thermoneutral point of 30 °C to enhance translational research. However, the impact of environmental temperature on mouse gastrointestinal physiology remains largely unexplored. Here we show that mice raised at 22 °C exhibit whole gut transit speed nearly twice as fast as those raised at 30 °C, primarily driven by a threefold increase in colon transit speed. Furthermore, gut microbiota composition differs between the two temperatures but does not dictate temperature-dependent differences in gut motility. Notably, increased stress signals from the hypothalamic-pituitary-adrenal axis at 22 °C have a pivotal role in mediating temperature-dependent differences in gut motility. Pharmacological and genetic depletion of the stress hormone corticotropin-releasing hormone slows gut motility in stressed 22 °C mice but has no comparable effect in relatively unstressed 30 °C mice. In conclusion, our findings highlight that colder mouse facility temperatures significantly increase gut motility through hormonal stress pathways.
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Affiliation(s)
- Alvin Han
- Department of Microbiology and Immunology, Stanford University, Stanford, CA, USA
| | | | - Beatriz G Robinson
- Neurosciences IDP Graduate Program, Stanford University School of Medicine, Stanford, CA, USA
| | - Laren Becker
- Department of Medicine (Gastroenterology and Hepatology), Stanford University, Stanford, CA, USA
| | - Amanda Jacobson
- Genentech Inc., Research and Early Development, Immunology Discovery, South San Francisco, CA, USA
| | - Julia A Kaltschmidt
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Jennifer L Garrison
- Buck Institute for Research on Aging, Novato, CA, USA
- Global Consortium for Reproductive Longevity & Equality, Novato, CA, USA
| | - Ami S Bhatt
- Department of Medicine (Hematology, Blood and Marrow Transplantation), Stanford University, Stanford, CA, USA.
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA.
| | - Denise M Monack
- Department of Microbiology and Immunology, Stanford University, Stanford, CA, USA.
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Zhou F, Zhang Q, Zheng X, Shi F, Ma K, Ji F, Meng N, Li R, Lv J, Li Q. Antiaging Effects of Human Fecal Transplants with Different Combinations of Bifidobacterium bifidum LTBB21J1 and Lactobacillus casei LTL1361 in d-Galactose-Induced Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:9818-9827. [PMID: 38647087 DOI: 10.1021/acs.jafc.3c09815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
The feces of healthy middle-aged and old people were first transplanted into d-galactose-induced aging mice to construct humanized aging mice with gut microbiota (FMTC) to confirm the antiaging effect of probiotics produced from centenarians. The mouse model was then treated with centenarian-derived Bifidobacterium bifidum (FMTL), Lactobacillus casei (FMTB), and their mixtures (FMTM), and young mice were used as the control. Compared with the FMTC group, the results demonstrated that the probiotics and their combinations alleviated neuronal damage, increased antioxidant capacity, decreased inflammation, and enhanced cognitive and memory functions in aging mice. In the gut microbiota, the relative abundance of Lactobacillus, Ligilactobacillus, and Akkermansia increased and that of Desulfovibrio and Colidextribacter decreased in the FMTM group compared with that in the FMTC group. The three probiotic groups displayed significant changes in 15 metabolites compared with the FMTC group, with 4 metabolites showing increased expression and 11 metabolites showing decreased expression. The groups were graded as Control > FMTM > FMTB > FMTL > FMTC using a newly developed comprehensive quantitative scoring system that thoroughly analyzed the various indicators of this study. The beneficial antiaging effects of probiotics derived from centenarians were quantitatively described using a novel perspective in this study; it is confirmed that both probiotics and their combinations exert antiaging effects, with the probiotic complex group exhibiting a larger effect.
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Affiliation(s)
- Fan Zhou
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Qinren Zhang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Xiaohua Zheng
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Fengcui Shi
- School of Chemical and Biological Engineering, Qilu Institute of Technology, Shandong 250200, China
| | - Kai Ma
- Jiangsu New-Bio Biotechnology Co.,Ltd, Jiangsu 214400, China
| | - Feng Ji
- Jiangsu New-Bio Biotechnology Co.,Ltd, Jiangsu 214400, China
| | - Ning Meng
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Ruiding Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Jingwen Lv
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Quanyang Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
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3
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Herman C, Barker BM, Bartelli TF, Chandra V, Krajmalnik-Brown R, Jewell M, Li L, Liao C, McAllister F, Nirmalkar K, Xavier JB, Gregory Caporaso J. Assessing Engraftment Following Fecal Microbiota Transplant. ARXIV 2024:arXiv:2404.07325v1. [PMID: 38659636 PMCID: PMC11042410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Fecal Microbiota Transplant (FMT) is an FDA approved treatment for recurrent Clostridium difficile infections, and is being explored for other clinical applications, from alleviating digestive and neurological disorders, to priming the microbiome for cancer treatment, and restoring microbiomes impacted by cancer treatment. Quantifying the extent of engraftment following an FMT is important in determining if a recipient didn't respond because the engrafted microbiome didn't produce the desired outcomes (a successful FMT, but negative treatment outcome), or the microbiome didn't engraft (an unsuccessful FMT and negative treatment outcome). The lack of a consistent methodology for quantifying FMT engraftment extent hinders the assessment of FMT success and its relation to clinical outcomes, and presents challenges for comparing FMT results and protocols across studies. Here we review 46 studies of FMT in humans and model organisms and group their approaches for assessing the extent to which an FMT engrafts into three criteria: 1) Chimeric Asymmetric Community Coalescence investigates microbiome shifts following FMT engraftment using methods such as alpha diversity comparisons, beta diversity comparisons, and microbiome source tracking. 2) Donated Microbiome Indicator Features tracks donated microbiome features (e.g., amplicon sequence variants or species of interest) as a signal of engraftment with methods such as differential abundance testing based on the current sample collection, or tracking changes in feature abundances that have been previously identified (e.g., from FMT or disease-relevant literature). 3) Temporal Stability examines how resistant post-FMT recipient's microbiomes are to reverting back to their baseline microbiome. Individually, these criteria each highlight a critical aspect of microbiome engraftment; investigated together, however, they provide a clearer assessment of microbiome engraftment. We discuss the pros and cons of each of these criteria, providing illustrative examples of their application. We also introduce key terminology and recommendations on how FMT studies can be analyzed for rigorous engraftment extent assessment.
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Affiliation(s)
- Chloe Herman
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
- School of Informatics, Computing and Cyber Systems, Northern Arizona University, Flagstaff, AZ, USA
| | - Bridget M Barker
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
| | - Thais F Bartelli
- Department of Clinical Cancer Prevention, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Vidhi Chandra
- Department of Clinical Cancer Prevention, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Rosa Krajmalnik-Brown
- Biodesign Center for Health Through Microbiomes, Arizona State University, Tempe, AZ, U.S.A
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, U.S.A
| | | | - Le Li
- Department of Clinical Cancer Prevention, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Chen Liao
- Program for Computational and Systems Biology, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Florencia McAllister
- Department of Clinical Cancer Prevention, University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Khemlal Nirmalkar
- Biodesign Center for Health Through Microbiomes, Arizona State University, Tempe, AZ, U.S.A
| | - Joao B Xavier
- Program for Computational and Systems Biology, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - J Gregory Caporaso
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
- School of Informatics, Computing and Cyber Systems, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
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Ruiz A, Gisbert E, Andree KB. Impact of the diet in the gut microbiota after an inter-species microbial transplantation in fish. Sci Rep 2024; 14:4007. [PMID: 38369563 PMCID: PMC10874947 DOI: 10.1038/s41598-024-54519-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 02/13/2024] [Indexed: 02/20/2024] Open
Abstract
Inter-species microbial transplantations offer the possibility of transferring species-specific microbes and their associated functionality. As a conceptual approach, an intestinal microbiota transplant (IMT) between two marine carnivorous fish species that thrive in different environmental conditions was conducted: from donor Atlantic salmon (Salmo salar) to recipient gilthead seabream (Sparus aurata), after obliterating its basal microbiota with an antibiotic treatment. To confirm that the gut microbiota was able to recover after antibiotics without the influence of the diet, a group of gilthead seabream not submitted to the IMT was kept fasted as an internal control. To assess the effect of the diet after the IMT, two groups of gilthead seabream were respectively fed with their typical diet and with Atlantic salmon diet. At 36 days post-IMT, the gut of the individuals fed with their typical diet was dominated by the feed-associated bacteria, while those fed with the salmon diet had developed a unique microbiota from the convergence of the diet, donor, and recipient microbiota. These results suggested that an intestinal microbiota transplantation may be effective if the basal microbiota from the gut is first cleared and a targeted dietary modification is provided to maintain and enrich the novel bacteria species over time.
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Affiliation(s)
- Alberto Ruiz
- Aquaculture Program, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Centre de La Ràpita, Crta. Poble Nou, km 5.5, 43540, La Ràpita, Spain.
| | - Enric Gisbert
- Aquaculture Program, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Centre de La Ràpita, Crta. Poble Nou, km 5.5, 43540, La Ràpita, Spain
| | - Karl B Andree
- Aquaculture Program, Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Centre de La Ràpita, Crta. Poble Nou, km 5.5, 43540, La Ràpita, Spain
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Kong X, Li Q, Wang D, Wang M, Yang F, Meng J. Mechanism of Qizhen decoction-mediated maturation of DC cells to activate the IL-12/JAK2/STAT4 pathway to sensitise PD-1 inhibitors in the treatment of colorectal cancer. JOURNAL OF ETHNOPHARMACOLOGY 2024; 320:117399. [PMID: 37956913 DOI: 10.1016/j.jep.2023.117399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/05/2023] [Accepted: 11/06/2023] [Indexed: 11/20/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Traditional Chinese medicine has been utilized to treat colorectal cancer (CRC). Qizhen decoction (QZD), a potential compound prescription of traditional Chinese medicine, possesses multiple biological activities. It has been used to treat CRC in clinical practice and has been proven to be effective. AIM OF THE STUDY To investigate the impact of QZD supported by intestinal flora in combination with PD-1 inhibitor on colorectal cancer, and to elucidate the mechanism by which QZD enhances the sensitivity of PD-1 inhibitor against colorectal cancer. MATERIALS AND METHODS Observation of Intestinal Flora Mediating the Effect of QZD Combined with PD-1 Inhibitor in the Treatment of Colorectal Cancer. We used Flow cytometry and qPCR to detect the effect of QZD combined with PD-1 inhibitor on the activation of effector T cells in a wild mouse model of colorectal cancer. In wild and germ-free mouse models, the differences in inflammatory factors, pathological change, body mass, colorectal length, and tumour load were observed. In the study of the mechanism of QZD combined with PD-1 inhibitor in the treatment of colorectal cancer, the study evaluated the abundance of Akkermansia, the phenotypes of effector T cells and DC cells, as well as inflammatory factors in each group of mice to determine whether Akkermansia played a role in activating DC cells. Based on the JAK2/TYK2/STAT4 pathway, the mechanism of PD-1 inhibitor sensitisation by QZD in colorectal cancer was further investigated. RESULTS We found that QZD combined with PD-1 inhibitor could improve the therapeutic effect on colorectal cancer by inducing more critical immune functions. QZD promotes increased Akkermansia abundance in the gut. Akkermansia promotes maturation of DC cells, and mature DC cells activate the IL-12/JAK2/STAT4 pathway, which significantly activates effector T cells. Akkermansia is key to QZD combined with PD-1 inhibitor-mediated immunity exerting a therapeutic effect on colorectal cancer. CONCLUSION The mechanism of action of the QZD sensitizing PD-1 inhibitor is to promote the maturation of DC cells to release IL-12 and activate the JAK2/STAT4 pathway to induce effector T cell activation by increasing the abundance of Akkermansia.
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Affiliation(s)
- Xianbin Kong
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
| | - Qingbo Li
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
| | - Dong Wang
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
| | - Miao Wang
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
| | - Fan Yang
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
| | - Jingyan Meng
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
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Ahmad R, Kumar B, Thapa I, Talmon GA, Salomon J, Ramer-Tait AE, Bastola DK, Dhawan P, Singh AB. Loss of claudin-3 expression increases colitis risk by promoting Gut Dysbiosis. Gut Microbes 2023; 15:2282789. [PMID: 38010872 PMCID: PMC10730149 DOI: 10.1080/19490976.2023.2282789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 11/08/2023] [Indexed: 11/29/2023] Open
Abstract
Dysregulation of both the gut barrier and microbiota (dysbiosis) promotes susceptibility to and severity of Inflammatory Bowel Diseases (IBD). Leaky gut and dysbiosis often coexist; however, potential interdependence and molecular regulation are not well understood. Robust expression of claudin-3 (CLDN3) characterizes the gut epithelium, and studies have demonstrated a positive association between CLDN3 expression and gut barrier maturity and integrity, including in response to probiotics. However, the exact status and causal role of CLDN3 in IBD and regulation of gut dysbiosis remain unknown. Analysis of mouse and human IBD cohorts helped examine CLDN3 expression in IBD. The causal role was determined by modeling CLDN3 loss of expression during experimental colitis. 16S sequencing and in silico analysis helped examine gut microbiota diversity between Cldn3KO and WT mice and potential host metabolic responses. Fecal microbiota transplant (FMT) studies were performed to assess the role of gut dysbiosis in the increased susceptibility of Cldn3KO mice to colitis. A significant decrease in CLDN3 expression characterized IBD and CLDN3 loss of expression promoted colitis. 16S sequencing analysis suggested gut microbiota changes in Cldn3KO mice that were capable of modulating fatty acid metabolism and oxidative stress response. FMT from naïve Cldn3KO mice promoted colitis susceptibility in recipient germ-free mice (GFM) compared with GFM-receiving microbiota from WT mice. Our data demonstrate a critical role of CLDN3 in maintaining normal gut microbiota and inflammatory responses, which can be harnessed to develop novel therapeutic opportunities for patients with IBD.
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Affiliation(s)
- Rizwan Ahmad
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Balawant Kumar
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Ishwor Thapa
- School of Interdisciplinary Informatics, College of Information Science & Technology, University of Nebraska at Omaha, Omaha, NE, USA
| | - Geoffrey A. Talmon
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Jeffrey Salomon
- Department of Pediatrics, University of Nebraska Medical Center, Omaha, NE, USA
| | - Amanda E. Ramer-Tait
- Department of Food Science and Technology and the Nebraska Food for Health Center, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Dhundy K. Bastola
- School of Interdisciplinary Informatics, College of Information Science & Technology, University of Nebraska at Omaha, Omaha, NE, USA
| | - Punita Dhawan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
- Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA
| | - Amar B. Singh
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
- Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA
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7
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Alula KM, Dowdell AS, LeBere B, Lee JS, Levens CL, Kuhn KA, Kaipparettu BA, Thompson WE, Blumberg RS, Colgan SP, Theiss AL. Interplay of gut microbiota and host epithelial mitochondrial dysfunction is necessary for the development of spontaneous intestinal inflammation in mice. MICROBIOME 2023; 11:256. [PMID: 37978573 PMCID: PMC10655390 DOI: 10.1186/s40168-023-01686-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 09/30/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND Intestinal epithelial cell (IEC) mitochondrial dysfunction involvement in inflammatory bowel diseases (IBD), including Crohn's disease affecting the small intestine, is emerging in recent studies. As the interface between the self and the gut microbiota, IECs serve as hubs of bidirectional cross-talk between host and luminal microbiota. However, the role of mitochondrial-microbiota interaction in the ileum is largely unexplored. Prohibitin 1 (PHB1), a chaperone protein of the inner mitochondrial membrane required for optimal electron transport chain function, is decreased during IBD. We previously demonstrated that mice deficient in PHB1 specifically in IECs (Phb1i∆IEC) exhibited mitochondrial impairment, Paneth cell defects, gut microbiota dysbiosis, and spontaneous inflammation in the ileum (ileitis). Mice deficient in PHB1 in Paneth cells (epithelial secretory cells of the small intestine; Phb1∆PC) also exhibited mitochondrial impairment, Paneth cell defects, and spontaneous ileitis. Here, we determined whether this phenotype is driven by Phb1 deficiency-associated ileal microbiota alterations or direct effects of loss of PHB1 in host IECs. RESULTS Depletion of gut microbiota by broad-spectrum antibiotic treatment in Phb1∆PC or Phb1i∆IEC mice revealed a necessary role of microbiota to cause ileitis. Using germ-free mice colonized with ileal microbiota from Phb1-deficient mice, we show that this microbiota could not independently induce ileitis without host mitochondrial dysfunction. The luminal microbiota phenotype of Phb1i∆IEC mice included a loss of the short-chain fatty acid butyrate. Supplementation of butyrate in Phb1-deficient mice ameliorated Paneth cell abnormalities and ileitis. Phb1-deficient ileal enteroid models suggest deleterious epithelial-intrinsic responses to ileal microbiota that were protected by butyrate. CONCLUSIONS These results suggest a mutual and essential reinforcing interplay of gut microbiota and host IEC, including Paneth cell, mitochondrial health in influencing ileitis. Restoration of butyrate is a potential therapeutic option in Crohn's disease patients harboring epithelial cell mitochondrial dysfunction. Video Abstract.
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Affiliation(s)
- Kibrom M Alula
- Division of Gastroenterology & Hepatology, University of Colorado Anschutz Medical Campus, 12700 East 19Th Avenue, RC2 Campus Box BB158 HSC, Aurora, CO, 80045, USA
| | - Alexander S Dowdell
- Division of Gastroenterology & Hepatology, University of Colorado Anschutz Medical Campus, 12700 East 19Th Avenue, RC2 Campus Box BB158 HSC, Aurora, CO, 80045, USA
| | - Brittany LeBere
- Division of Gastroenterology & Hepatology, University of Colorado Anschutz Medical Campus, 12700 East 19Th Avenue, RC2 Campus Box BB158 HSC, Aurora, CO, 80045, USA
| | - J Scott Lee
- Division of Gastroenterology & Hepatology, University of Colorado Anschutz Medical Campus, 12700 East 19Th Avenue, RC2 Campus Box BB158 HSC, Aurora, CO, 80045, USA
| | - Cassandra L Levens
- Division of Rheumatology, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Kristine A Kuhn
- Division of Rheumatology, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Benny A Kaipparettu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Winston E Thompson
- Department of Obstetrics and Gynecology, Morehouse School of Medicine, Atlanta, GA, USA
| | - Richard S Blumberg
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Sean P Colgan
- Division of Gastroenterology & Hepatology, University of Colorado Anschutz Medical Campus, 12700 East 19Th Avenue, RC2 Campus Box BB158 HSC, Aurora, CO, 80045, USA
| | - Arianne L Theiss
- Division of Gastroenterology & Hepatology, University of Colorado Anschutz Medical Campus, 12700 East 19Th Avenue, RC2 Campus Box BB158 HSC, Aurora, CO, 80045, USA.
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8
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Mingaila J, Atzeni A, Burokas A. A Comparison of Methods of Gut Microbiota Transplantation for Preclinical Studies. Int J Mol Sci 2023; 24:12005. [PMID: 37569381 PMCID: PMC10418867 DOI: 10.3390/ijms241512005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/11/2023] [Accepted: 07/17/2023] [Indexed: 08/13/2023] Open
Abstract
The experimental details reported in preclinical fecal microbiota transplantation (FMT) protocols are highly inconsistent, variable, and/or incomplete. We therefore evaluated FMT from a human donor to antibiotic-induced microbial-depleted mice by exploring the effects of six techniques based on antibiotic (AB) or antibiotic + antimycotic (AB + T) gut decontamination, different administration routes, and different dosing intervals on the gut microbial population, assessed using 16S and 18S sequencing. In addition, we explored the effectiveness of FMT in terms of inflammation, physiological, and behavioral outcomes. Our results showed that intrarectal FMT at low dosing intervals better preserved the donor's gut bacterial community at genus level. Furthermore, we showed a lower abundance of several genera of fungi in animals treated with AB + T. In addition, we observed that AB + T gut decontamination followed by per os FMT, once every 3 days, affected behavioral parameters when compared to other FMT techniques. Accordingly, the same FMT groups that showed an association with some of the behavioral tests were also related to specific gut fungal genera, suggesting a possible mediation. Our findings may be useful for optimizing the practice of FMT and also in terms of donor microbiota preservation. This information may help to improve the reproducibility and reliability of FMT studies.
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Affiliation(s)
| | | | - Aurelijus Burokas
- Department of Biological Models, Institute of Biochemistry, Life Sciences Center, Vilnius University, Sauletekio Ave. 7, LT-10257 Vilnius, Lithuania;
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9
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Li HJ, Li DQ, Zhang YL, Ding XF, Gao HT, Zhu Y, Liu J, Zhang LX, Chen J, Chen G, Yu Y. Modulation of gut microbiota alleviates cerebral ischemia/reperfusion injury in rats by inhibiting M1 polarization of microglia. Front Pharmacol 2023; 14:1123387. [PMID: 37229259 PMCID: PMC10203402 DOI: 10.3389/fphar.2023.1123387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 04/17/2023] [Indexed: 05/27/2023] Open
Abstract
Gut microbiota affects the gut-brain axis; hence, the modulation of the microbiota has been proposed as a potential therapeutic strategy for cerebral ischemia/reperfusion injury (CIRI). However, the role and mechanism of the gut microbiota in regulating microglial polarization during CIRI remain poorly understood. Herein, using a middle cerebral artery occlusion and reperfusion (MCAO/R) rat model, we evaluated changes in the gut microbiota after CIRI and the potential effects of fecal microbiota transplant (FMT) on the brain. Rats underwent either MCAO/R or sham surgery, and then they received FMT (started 3 days later; continued for 10 days). 2,3,5-Triphenyltetrazolium chloride staining, neurological outcome scale, and Fluoro-Jade C staining showed that MCAO/R induced cerebral infarction, neurological deficits, and neuronal degeneration. In addition, immunohistochemistry or real-time PCR assay showed increased expression levels of M1-macrophage markers-TNF-α, IL-1β, IL-6, and iNOS-in the rats following MCAO/R. Our finding suggests that microglial M1 polarization is involved in CIRI. 16 S ribosomal RNA gene sequencing data revealed an imbalance in the gut microbiota of MCAO/R animals. In contrast, FMT reversed this MCAO/R-induced imbalance in the gut microbiota and ameliorated nerve injury. In addition, FMT prevented the upregulation in the ERK and NF-κB pathways, which reversed the M2-to-M1 microglial shift 10 days after MCAO/R injury in rats. Our primary data showed that the modulation of the gut microbiota can attenuate CIRI in rats by inhibiting microglial M1 polarization through the ERK and NF-κB pathways. However, an understanding of the underlying mechanism requires further study.
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Affiliation(s)
- Hai-Jun Li
- Department of Neurology, Taizhou Second People’s Hospital, Taizhou University, Taizhou, Zhejiang, China
| | - Dan-Qing Li
- Department of Pharmacology, School of Medicine, Taizhou University, Taizhou, Zhejiang, China
| | - Yu-Liang Zhang
- Department of Pharmacology, School of Medicine, Taizhou University, Taizhou, Zhejiang, China
| | - Xiao-Fei Ding
- Department of Pharmacology, School of Medicine, Taizhou University, Taizhou, Zhejiang, China
| | - Hai-Tao Gao
- Department of Hygiene Toxicology, School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Ya Zhu
- Department of Hygiene Toxicology, School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jun Liu
- Department of Neurology, Taizhou Second People’s Hospital, Taizhou University, Taizhou, Zhejiang, China
| | - Li-Xia Zhang
- Department of Neurology, Taizhou Second People’s Hospital, Taizhou University, Taizhou, Zhejiang, China
| | - Jie Chen
- Department of Pharmacology, School of Medicine, Taizhou University, Taizhou, Zhejiang, China
| | - Guang Chen
- Department of Pharmacology, School of Medicine, Taizhou University, Taizhou, Zhejiang, China
| | - Ying Yu
- Laboratory Department, Municipal Hospital Affiliated to Medical School of Taizhou University, Taizhou, Zhejiang, China
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10
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Zhang Q, Li T, Niu J, Xiao J, Zhang M, Zhang R, Chen D, Shi Y, Zhang X, Hu X, Yu B, Feng J, Fang Q. Inhibitory effects of antibiotic-induced gut microbiota depletion on acute itch behavior in mice. Brain Res Bull 2022; 190:50-61. [PMID: 36126873 DOI: 10.1016/j.brainresbull.2022.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 09/07/2022] [Accepted: 09/16/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND The gut microbiota is known to be associated with the regulation of many neurological diseases and behaviors, including chronic pain. However, it is unclear whether the gut microbiota is critical to the itch sensation. In this study, we investigated the effects of gut microbiota depletion on acute itch. METHODS First, an antibiotic cocktail was orally administered to deplete the gut microbiota in male C57BL/6 mice. Then, pruritogens were intradermally injected to induce acute itch behavior. In addition, antibiotic-treated mice received transplantation of fecal microbiota from untreated mice, followed by tests for acute itch. The changes in c-Fos expression in trigeminal ganglia (TG) neurons were also investigated by immunofluorescence staining. RESULTS Our results indicated that chronic antibiotic treatment significantly reduced the diversity and richness of the gut microbiota of mice. Compared to vehicle-treated mice, antibiotic-treated mice showed reductions in acute itch behavior induced by compound 48/80, chloroquine (CQ), and serotonin (5-HT), respectively. Moreover, repositioning of microbiota reversed the reductions in acute itch behavior in antibiotic-treated mice. In addition, immunofluorescence staining revealed that antibiotic-treated mice displayed decreased c-Fos expression in ipsilateral TG compared to controls. CONCLUSIONS Our study, for the first time, discovered that antibiotic-induced gut microbiota depletion could reduce acute itch behavior, which may be connected with decreased TG neuronal activity.
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Affiliation(s)
- Qinqin Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China
| | - Tingting Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China
| | - Jiandong Niu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China
| | - Jian Xiao
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China
| | - Mengna Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China
| | - Run Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China
| | - Dan Chen
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China
| | - Yonghang Shi
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China
| | - Xiaodi Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China
| | - Xuanran Hu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China
| | - Bowen Yu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China
| | - Jie Feng
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China.
| | - Quan Fang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, and State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, Lanzhou, China.
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