1
|
Zhang Q, Zhao L, Li Y, Wang S, Lu G, Wang H. Advances in the mechanism of action of short-chain fatty acids in psoriasis. Int Immunopharmacol 2024; 141:112928. [PMID: 39159566 DOI: 10.1016/j.intimp.2024.112928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 07/22/2024] [Accepted: 08/10/2024] [Indexed: 08/21/2024]
Abstract
Psoriasis is a prevalent chronic inflammatory and immunological disorder. Its lesions are present as scaly erythema or plaques. Disruptions in the body's immune system play a significant role in developing psoriasis. Recent evidence suggests a potential role of the gut microbiome in autoimmune diseases. Short-chain fatty acids (SCFAs) are the primary metabolites created by gut microbes and play a crucial fuction in autoimmunity. SCFAs act on various cells by mediating signaling to participate in host physiological and pathological processes. These processes encompass body metabolism, maintenance of intestinal barrier function, and immune system modulation. SCFAs can regulate immune cells to enhance the body's immune function, potentially influencing the prevention and treatment of psoriasis. However, the mechanisms underlying the role of SCFAs in psoriasis remain incompletely understood. This paper examines the relationship between SCFAs and psoriasis, elucidating how SCFAs influence the immune system, inflammatory response, and gut barrier in psoriasis. According to the study, in psoriasis, SCFAs have been shown to regulate neutrophils, macrophages, and dendritic cells in the adaptive immune system, as well as T and B cells in the innate immune system. Additionally, we explore the role of SCFAs in psoriasis by maintaining intestinal barrier function, restoring intestinal ecological homeostasis, and investigating the potential therapeutic benefits of SCFAs for psoriasis.
Collapse
Affiliation(s)
- Qin Zhang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China; National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China; Tianjin Academy of Traditional Chinese Medicine Affiliated Hospital, Tianjin, China; Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Linna Zhao
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China; National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China; Tianjin Academy of Traditional Chinese Medicine Affiliated Hospital, Tianjin, China; Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China.
| | - Yu Li
- Tianjin Academy of Traditional Chinese Medicine Affiliated Hospital, Tianjin, China; Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Siyao Wang
- Tianjin Academy of Traditional Chinese Medicine Affiliated Hospital, Tianjin, China; Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Guiling Lu
- Tianjin Academy of Traditional Chinese Medicine Affiliated Hospital, Tianjin, China
| | - Hongmei Wang
- Tianjin Academy of Traditional Chinese Medicine Affiliated Hospital, Tianjin, China.
| |
Collapse
|
2
|
Pan Y, Zhang H, Zhu L, Tan J, Wang B, Li M. The role of gut microbiota in MP/NP-induced toxicity. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 359:124742. [PMID: 39153541 DOI: 10.1016/j.envpol.2024.124742] [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: 04/23/2024] [Revised: 08/13/2024] [Accepted: 08/14/2024] [Indexed: 08/19/2024]
Abstract
Microplastics (MPs) and nanoplastics (NPs) are globally recognized as emerging environmental pollutants in various environmental media, posing potential threats to ecosystems and human health. MPs/NPs are unavoidably ingested by humans, mainly through contaminated food and drinks, impairing the gastrointestinal ecology and seriously impacting the human body. The specific role of gut microbiota in the gastrointestinal tract upon MP/NP exposure remains unknown. Given the importance of gut microbiota in metabolism, immunity, and homeostasis, this review aims to enhance our current understanding of the role of gut microbiota in MP/NP-induced toxicity. First, it discusses human exposure to MPs/NPs through the diet and MP/NP-induced adverse effects on the respiratory, digestive, neural, urinary, reproductive, and immune systems. Second, it elucidates the complex interactions between the gut microbiota and MPs/NPs. MPs/NPs can disrupt gut microbiota homeostasis, while the gut microbiota can degrade MPs/NPs. Third, it reveals the role of the gut microbiota in MP/NP-mediated systematic toxicity. MPs/NPs cause direct intestinal toxicity and indirect toxicity in other organs via regulating the gut-brain, gut-liver, and gut-lung axes. Finally, novel approaches such as dietary interventions, prebiotics, probiotics, polyphenols, engineered bacteria, microalgae, and micro/nanorobots are recommended to reduce MP/NP toxicity in humans. Overall, this review provides a theoretical basis for targeting the gut microbiota to study MP/NP toxicity and develop novel strategies for its mitigation.
Collapse
Affiliation(s)
- Yinping Pan
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, PR China
| | - Haojie Zhang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, PR China
| | - Liancai Zhu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, PR China.
| | - Jun Tan
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological & Chemical engineering, Chongqing University of Education, Chongqing, 400067, PR China
| | - Bochu Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, PR China
| | - Minghui Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, PR China; Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China.
| |
Collapse
|
3
|
Rajasekaran S, Vasudevan G, Tangavel C, Ramachandran K, Nayagam SM, Muthurajan R, Gopalakrishnan C, Anand SV, Shetty AP, Kanna RM. Does the gut microbiome influence disc health and disease? The interplay between dysbiosis, pathobionts, and disc inflammation: a pilot study. Spine J 2024; 24:1952-1963. [PMID: 38925301 DOI: 10.1016/j.spinee.2024.06.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 06/11/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024]
Abstract
BACKGROUND CONTEXT Gut microbiome alterations resulting in inflammatory responses have been implicated in many distant effects on different organs. However, its influence on disc health is still not fully investigated. PURPOSE Our objective was to document the gut biome in healthy volunteers and patients with disc degeneration and to understand the role of gut dysbiosis on human disc health. STUDY DESIGN Experimental case-control study. PATIENT SAMPLE We included 40 patients with disc degeneration (DG) and 20 healthy volunteers (HV). HV comprised of age groups 30 to 60 years with no known record of back pain and no clinical comorbidities, with normal MRI. Diseased group (DG) were patients in the same age group undergoing surgery for disc disease (disc herniation-25; discogenic stenosis-15) and without instability (with Modic-20; and non-Modic-20). OUTCOME MEASURES N/A. METHODS We analyzed 16S V3-V4 rDNA gut metagenome from 20 healthy volunteers (HV) and compared the top signature genera from 40 patients with disc degeneration (DG) across Modic and non-Modic groups. Norgen Stool DNA Kit was used for DNA extraction from ∼200 mg of each faecal sample collected using the Norgen Stool Collection Kit.16S V3-V4 rDNA amplicons were generated with universal bacterial primers 341F and 806R and amplified with Q5 High-Fidelity DNA Polymerase. Libraries were sequenced with 250×2 PE to an average of 0.1 million raw reads per sample (Illumina Novaseq 6000). Demultiplexed raw data was assessed with FastQC, and adapter trimmed reads >Q30 reads were processed in the QIME2 pipeline. Serum C-reactive protein (CRP) was measured by the immunoturbimetry method and Fatty acid-binding protein 5 (FABP5) was measured in albumin-globulin-depleted plasma through global proteome analysis. RESULTS We observed significant gut dysbiosis between HV and DG and also between the Modic and non-Modic groups. In the Modic group, commensals Bifidobacterium and Ruminococcus were significantly depleted, while pathobionts Streptococcus, Prevotella, and Butryvibrio were enriched. Firmicutes/Bacteroidetes ratio was decreased in DG (Modic-0.62, non-Modic-0.43) compared to HV (0.70). Bacteria-producing beneficial short-chain fatty acids were also depleted in DG. Elevated serum CRP and increased FABP5 were observed in DG. CONCLUSION The study revealed gut dysbiosis, an altered Firmicutes/Bacteroidetes ratio, reduced SCFA-producing bacteria, and increased systemic and local inflammation in association with disc disease, especially in Modic changes. The findings have considerable importance for our understanding and prevention of disc degeneration.
Collapse
Affiliation(s)
| | - Gowdaman Vasudevan
- Ganga Research Centre, Vattamalaipalayam, NGGO Colony Post, SF No.442, Coimbatore, Tamil Nadu, India
| | - Chitraa Tangavel
- Ganga Research Centre, Vattamalaipalayam, NGGO Colony Post, SF No.442, Coimbatore, Tamil Nadu, India
| | - Karthik Ramachandran
- Department of Spine Surgery, Ganga Hospital, 313, Mettupalayam Rd, Coimbatore, India
| | - Sharon Miracle Nayagam
- Ganga Research Centre, Vattamalaipalayam, NGGO Colony Post, SF No.442, Coimbatore, Tamil Nadu, India
| | - Raveendran Muthurajan
- Department of Plant Biotechnology, Tamil Nadu Agricultural University, Lawley Rd, Coimbatore, Tamil Nadu, India
| | - Chellappa Gopalakrishnan
- Ganga Research Centre, Vattamalaipalayam, NGGO Colony Post, SF No.442, Coimbatore, Tamil Nadu, India
| | - Sri Vijay Anand
- Department of Spine Surgery, Ganga Hospital, 313, Mettupalayam Rd, Coimbatore, India
| | - Ajoy Prasad Shetty
- Department of Spine Surgery, Ganga Hospital, 313, Mettupalayam Rd, Coimbatore, India
| | - Rishi Mugesh Kanna
- Department of Spine Surgery, Ganga Hospital, 313, Mettupalayam Rd, Coimbatore, India
| |
Collapse
|
4
|
Jovanovic N, Zach V, Crocini C, Bahr LS, Forslund-Startceva SK, Franz K. A gender perspective on diet, microbiome, and sex hormone interplay in cardiovascular disease. Acta Physiol (Oxf) 2024:e14228. [PMID: 39263901 DOI: 10.1111/apha.14228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 07/26/2024] [Accepted: 08/24/2024] [Indexed: 09/13/2024]
Abstract
A unique interplay between body and environment embeds and reflects host-microbiome interactions that contribute to sex-differential disease susceptibility, symptomatology, and treatment outcomes. These differences derive from individual biological factors, such as sex hormone action, sex-divergent immune processes, X-linked gene dosage effects, and epigenetics, as well as from their interaction across the lifespan. The gut microbiome is increasingly recognized as a moderator of several body systems that are thus impacted by its function and composition. In humans, biological sex components further interact with gender-specific exposures such as dietary preferences, stressors, and life experiences to form a complex whole, requiring innovative methodologies to disentangle. Here, we summarize current knowledge of the interactions among sex hormones, gut microbiota, immune system, and vascular health and their relevance for sex-differential epidemiology of cardiovascular diseases. We outline clinical implications, identify knowledge gaps, and place emphasis on required future studies to address these gaps. In addition, we provide an overview of the caveats associated with conducting cardiovascular research that require consideration of sex/gender differences. While previous work has inspected several of these components separately, here we call attention to further translational utility of a combined perspective from cardiovascular translational research, gender medicine, and microbiome systems biology.
Collapse
Affiliation(s)
- Nina Jovanovic
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Berlin, Germany
- German Centre for Cardiovascular Research (DZHK) Partner Site Berlin, Berlin, Germany
| | - Veronika Zach
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- German Centre for Cardiovascular Research (DZHK) Partner Site Berlin, Berlin, Germany
- Department of Cardiology, Angiology and Intensive Care Medicine, Deutsches Herzzentrum der Charité - Medical Heart Center of Charité and German Heart Institute Berlin, Berlin, Germany
| | - Claudia Crocini
- German Centre for Cardiovascular Research (DZHK) Partner Site Berlin, Berlin, Germany
- Max Rubner Center for Cardiovascular Metabolic Renal Research (MRC), Deutsches Herzzentrum der Charité (DHZC), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Lina Samira Bahr
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Berlin, Germany
- German Centre for Cardiovascular Research (DZHK) Partner Site Berlin, Berlin, Germany
- Max Rubner Center for Cardiovascular Metabolic Renal Research (MRC), Deutsches Herzzentrum der Charité (DHZC), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sofia Kirke Forslund-Startceva
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Berlin, Germany
- German Centre for Cardiovascular Research (DZHK) Partner Site Berlin, Berlin, Germany
| | - Kristina Franz
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Berlin, Germany
- German Centre for Cardiovascular Research (DZHK) Partner Site Berlin, Berlin, Germany
| |
Collapse
|
5
|
Arulvasan W, Chou H, Greenwood J, Ball ML, Birch O, Coplowe S, Gordon P, Ratiu A, Lam E, Hatch A, Szkatulska M, Levett S, Mead E, Charlton-Peel C, Nicholson-Scott L, Swann S, van Schooten FJ, Boyle B, Allsworth M. High-quality identification of volatile organic compounds (VOCs) originating from breath. Metabolomics 2024; 20:102. [PMID: 39242444 PMCID: PMC11379754 DOI: 10.1007/s11306-024-02163-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Accepted: 08/10/2024] [Indexed: 09/09/2024]
Abstract
INTRODUCTION Volatile organic compounds (VOCs) can arise from underlying metabolism and are detectable in exhaled breath, therefore offer a promising route to non-invasive diagnostics. Robust, precise, and repeatable breath measurement platforms able to identify VOCs in breath distinguishable from background contaminants are needed for the confident discovery of breath-based biomarkers. OBJECTIVES To build a reliable breath collection and analysis method that can produce a comprehensive list of known VOCs in the breath of a heterogeneous human population. METHODS The analysis cohort consisted of 90 pairs of breath and background samples collected from a heterogenous population. Owlstone Medical's Breath Biopsy® OMNI® platform, consisting of sample collection, TD-GC-MS analysis and feature extraction was utilized. VOCs were determined to be "on-breath" if they met at least one of three pre-defined metrics compared to paired background samples. On-breath VOCs were identified via comparison against purified chemical standards, using retention indexing and high-resolution accurate mass spectral matching. RESULTS 1471 VOCs were present in > 80% of samples (breath and background), and 585 were on-breath by at least one metric. Of these, 148 have been identified covering a broad range of chemical classes. CONCLUSIONS A robust breath collection and relative-quantitative analysis method has been developed, producing a list of 148 on-breath VOCs, identified using purified chemical standards in a heterogenous population. Providing confirmed VOC identities that are genuinely breath-borne will facilitate future biomarker discovery and subsequent biomarker validation in clinical studies. Additionally, this list of VOCs can be used to facilitate cross-study data comparisons for improved standardization.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Frederik-Jan van Schooten
- Faculty of Health, Medicine and Life Sciences, Pharmacology and Toxicology, Maastricht University, Maastricht, Netherlands
| | | | | |
Collapse
|
6
|
Sleem I, Smolensky D, Dia V. Gastrointestinal Health Benefits of Sorghum Phenolics. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2024:10.1007/s11130-024-01230-6. [PMID: 39212840 DOI: 10.1007/s11130-024-01230-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/15/2024] [Indexed: 09/04/2024]
Abstract
Sorghum is considered a promising food security crop and remarkable rich source of bioactive components including phenolic acids, flavonoids, and tannins. Sorghum phenolics exhibited numerous protective effects against multiple chronic diseases. However, there is no review of the effects of sorghum phenolics on gastrointestinal (GI) health. Specifically, recent studies have highly suggested that sorghum phenolics can maintain gastrointestinal homeostasis and enhance microbial diversity and richness. Furthermore, sorghum phenolics showed GI anticancer effects in both in vitro and in vivo studies against colorectal and esophageal cancers. Treatment of GI related human cancer cell lines stimulated apoptosis and suppressed proliferation. Sorghum intake and extracts treatments reduced intestinal oxidative stress and inflammatory mediators in human and in vivo studies. In addition, understanding the role and mechanisms underlying gastrointestinal health benefits of sorghum phenolics is crucial to determine treatment strategies of different GI diseases.
Collapse
Affiliation(s)
- Ibtesam Sleem
- Department of Food Science, University of Tennessee, 2510 River Drive, Knoxville, TN, 37996, USA
- Department of Food Science and Technology, Tanta University, Tanta, Gharbeya, Egypt
| | - Dmitriy Smolensky
- U.S. Department of Agriculture, Grain Quality and Structure Research Unit, Agricultural Research Service, 1515 College Ave, Manhattan, KS, 66502, USA
| | - Vermont Dia
- Department of Food Science, University of Tennessee, 2510 River Drive, Knoxville, TN, 37996, USA.
| |
Collapse
|
7
|
Meng EX, Verne GN, Zhou Q. Macrophages and Gut Barrier Function: Guardians of Gastrointestinal Health in Post-Inflammatory and Post-Infection Responses. Int J Mol Sci 2024; 25:9422. [PMID: 39273369 PMCID: PMC11395020 DOI: 10.3390/ijms25179422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2024] [Revised: 08/27/2024] [Accepted: 08/28/2024] [Indexed: 09/15/2024] Open
Abstract
The gut barrier is essential for protection against pathogens and maintaining homeostasis. Macrophages are key players in the immune system, are indispensable for intestinal health, and contribute to immune defense and repair mechanisms. Understanding the multifaceted roles of macrophages can provide critical insights into maintaining and restoring gastrointestinal (GI) health. This review explores the essential role of macrophages in maintaining the gut barrier function and their contribution to post-inflammatory and post-infectious responses in the gut. Macrophages significantly contribute to gut barrier integrity through epithelial repair, immune modulation, and interactions with gut microbiota. They demonstrate active plasticity by switching phenotypes to resolve inflammation, facilitate tissue repair, and regulate microbial populations following an infection or inflammation. In addition, tissue-resident (M2) and infiltration (M1) macrophages convert to each other in gut problems such as IBS and IBD via major signaling pathways mediated by NF-κB, JAK/STAT, PI3K/AKT, MAPK, Toll-like receptors, and specific microRNAs such as miR-155, miR-29, miR-146a, and miR-199, which may be good targets for new therapeutic approaches. Future research should focus on elucidating the detailed molecular mechanisms and developing personalized therapeutic approaches to fully harness the potential of macrophages to maintain and restore intestinal permeability and gut health.
Collapse
Affiliation(s)
| | - George Nicholas Verne
- College of Medicine, University of Tennessee, Memphis, TN 38103, USA
- Lt. Col. Luke Weathers, Jr. VA Medical Center, Memphis, TN 38105, USA
| | - Qiqi Zhou
- College of Medicine, University of Tennessee, Memphis, TN 38103, USA
- Lt. Col. Luke Weathers, Jr. VA Medical Center, Memphis, TN 38105, USA
| |
Collapse
|
8
|
Li X, Shang S, Wu M, Song Q, Chen D. Gut microbial metabolites in lung cancer development and immunotherapy: Novel insights into gut-lung axis. Cancer Lett 2024; 598:217096. [PMID: 38969161 DOI: 10.1016/j.canlet.2024.217096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 06/11/2024] [Accepted: 06/28/2024] [Indexed: 07/07/2024]
Abstract
Metabolic derivatives of numerous microorganisms inhabiting the human gut can participate in regulating physiological activities and immune status of the lungs through the gut-lung axis. The current well-established microbial metabolites include short-chain fatty acids (SCFAs), tryptophan and its derivatives, polyamines (PAs), secondary bile acids (SBAs), etc. As the study continues to deepen, the critical function of microbial metabolites in the occurrence and treatment of lung cancer has gradually been revealed. Microbial derivates can enter the circulation system to modulate the immune microenvironment of lung cancer. Mechanistically, oncometabolites damage host DNA and promote the occurrence of lung cancer, while tumor-suppresive metabolites directly affect the immune system to combat the malignant properties of cancer cells and even show considerable application potential in improving the efficacy of lung cancer immunotherapy. Considering the crosstalk along the gut-lung axis, in-depth exploration of microbial metabolites in patients' feces or serum will provide novel guidance for lung cancer diagnosis and treatment selection strategies. In addition, targeted therapeutics on microbial metabolites are expected to overcome the bottleneck of lung cancer immunotherapy and alleviate adverse reactions, including fecal microbiota transplantation, microecological preparations, metabolite synthesis and drugs targeting metabolic pathways. In summary, this review provides novel insights and explanations on the intricate interplay between gut microbial metabolites and lung cancer development, and immunotherapy through the lens of the gut-lung axis, which further confirms the possible translational potential of the microbiome metabolome in lung cancer treatment.
Collapse
Affiliation(s)
- Xinpei Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Shijie Shang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China; Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Meng Wu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Qian Song
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China.
| | - Dawei Chen
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China.
| |
Collapse
|
9
|
Coluccio A, Lopez Palomera F, Spero MA. Anaerobic bacteria in chronic wounds: Roles in disease, infection and treatment failure. Wound Repair Regen 2024. [PMID: 39129662 DOI: 10.1111/wrr.13208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 07/09/2024] [Accepted: 07/29/2024] [Indexed: 08/13/2024]
Abstract
Infection is among the most common factors that impede wound healing, yet standard treatments routinely fail to resolve chronic wound infections. The chronic wound environment is largely hypoxic/anoxic, and wounds are predominantly colonised by facultative and obligate anaerobic bacteria. Oxygen (O2) limitation is an underappreciated driver of microbiota composition and behaviour in chronic wounds. In this perspective article, we examine how anaerobic bacteria and their distinct physiologies support persistent, antibiotic-recalcitrant infections. We describe the anaerobic energy metabolisms bacteria rely on for long-term survival in the wound environment, and why many antibiotics become less effective under hypoxic conditions. We also discuss obligate anaerobes, which are among the most prevalent taxa to colonise chronic wounds, yet their potential roles in influencing the microbial community and wound healing have been overlooked. All of the most common obligate anaerobes found in chronic wounds are opportunistic pathogens. We consider how these organisms persist in the wound environment and interface with host physiology to hinder wound healing processes or promote chronic inflammation. Finally, we apply our understanding of anaerobic physiologies to evaluate current treatment practices and to propose new strategies for treating chronic wound infections.
Collapse
Affiliation(s)
- Alison Coluccio
- Institute of Molecular Biology, University of Oregon, Eugene, Oregon, USA
| | | | - Melanie A Spero
- Institute of Molecular Biology, University of Oregon, Eugene, Oregon, USA
| |
Collapse
|
10
|
Iacovacci J, Serafini MS, Avuzzi B, Badenchini F, Cicchetti A, Devecchi A, Dispinzieri M, Doldi V, Giandini T, Gioscio E, Mancinelli E, Noris Chiorda B, Orlandi E, Palorini F, Possenti L, Reis Ferreira M, Villa S, Zaffaroni N, De Cecco L, Valdagni R, Rancati T. Intestinal microbiota composition is predictive of radiotherapy-induced acute gastrointestinal toxicity in prostate cancer patients. EBioMedicine 2024; 106:105246. [PMID: 39029427 PMCID: PMC11314862 DOI: 10.1016/j.ebiom.2024.105246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 06/03/2024] [Accepted: 07/02/2024] [Indexed: 07/21/2024] Open
Abstract
BACKGROUND The search for factors beyond the radiotherapy dose that could identify patients more at risk of developing radio-induced toxicity is essential to establish personalised treatment protocols for improving the quality-of-life of survivors. To investigate the role of the intestinal microbiota in the development of radiotherapy-induced gastrointestinal toxicity, the MicroLearner observational cohort study characterised the intestinal microbiota of 136 (discovery) and 79 (validation) consecutive prostate cancer patients at baseline radiotherapy. METHODS Gastrointestinal toxicity was assessed weekly during RT using CTCAE. An average grade >1.3 over time points was used to identify patients suffering from persistent acute toxicity (endpoint). The microbiota of patients was quantified from the baseline faecal samples using 16S rRNA gene sequencing technology and the Ion Reporter metagenomic pipeline. Statistical techniques and computational and machine learning tools were used to extract, functionally characterise, and predict core features of the bacterial communities of patients who developed acute gastrointestinal toxicity. FINDINGS Analysis of the core bacterial composition in the discovery cohort revealed a cluster of patients significantly enriched for toxicity, displaying a toxicity rate of 60%. Based on selected high-risk microbiota compositional features, we developed a clinical decision tree that could effectively predict the risk of toxicity based on the relative abundance of genera Faecalibacterium, Bacteroides, Parabacteroides, Alistipes, Prevotella and Phascolarctobacterium both in internal and external validation cohorts. INTERPRETATION We provide evidence showing that intestinal bacteria profiling from baseline faecal samples can be effectively used in the clinic to improve the pre-radiotherapy assessment of gastrointestinal toxicity risk in prostate cancer patients. FUNDING Italian Ministry of Health (Promotion of Institutional Research INT-year 2016, 5 × 1000, Ricerca Corrente funds). Fondazione Regionale per la Ricerca Biomedica (ID 2721017). AIRC (IG 21479).
Collapse
Affiliation(s)
- Jacopo Iacovacci
- Data Science Unit, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy.
| | - Mara Serena Serafini
- Unit of Experimental Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Barbara Avuzzi
- Unit of Radiation Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Fabio Badenchini
- Prostate Cancer Program, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Alessandro Cicchetti
- Data Science Unit, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Andrea Devecchi
- Unit of Experimental Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Michela Dispinzieri
- Unit of Radiation Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Valentina Doldi
- Unit of Molecular Pharmacology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Tommaso Giandini
- Unit of Medical Physics, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Eliana Gioscio
- Data Science Unit, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Elisa Mancinelli
- Unit of Experimental Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Barbara Noris Chiorda
- Unit of Radiation Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Ester Orlandi
- Radiation Oncology Clinical Department, National Center for Oncological Hadron Therapy (CNAO), Pavia, Italy
| | - Federica Palorini
- Prostate Cancer Program, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Luca Possenti
- Data Science Unit, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Miguel Reis Ferreira
- King's College London, London, UK; Guys and St Thomas NHS Foundation Trust, London, UK
| | - Sergio Villa
- Unit of Radiation Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Nadia Zaffaroni
- Unit of Molecular Pharmacology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Loris De Cecco
- Unit of Experimental Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - Riccardo Valdagni
- Unit of Radiation Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy; Prostate Cancer Program, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy; Department of Oncology and Hematology-Oncology, Università degli Studi di Milano, Milan, Italy
| | - Tiziana Rancati
- Data Science Unit, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| |
Collapse
|
11
|
Munteanu C, Schwartz B. Interactions between Dietary Antioxidants, Dietary Fiber and the Gut Microbiome: Their Putative Role in Inflammation and Cancer. Int J Mol Sci 2024; 25:8250. [PMID: 39125822 PMCID: PMC11311432 DOI: 10.3390/ijms25158250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 07/19/2024] [Accepted: 07/25/2024] [Indexed: 08/12/2024] Open
Abstract
The intricate relationship between the gastrointestinal (GI) microbiome and the progression of chronic non-communicable diseases underscores the significance of developing strategies to modulate the GI microbiota for promoting human health. The administration of probiotics and prebiotics represents a good strategy that enhances the population of beneficial bacteria in the intestinal lumen post-consumption, which has a positive impact on human health. In addition, dietary fibers serve as a significant energy source for bacteria inhabiting the cecum and colon. Research articles and reviews sourced from various global databases were systematically analyzed using specific phrases and keywords to investigate these relationships. There is a clear association between dietary fiber intake and improved colon function, gut motility, and reduced colorectal cancer (CRC) risk. Moreover, the state of health is reflected in the reciprocal and bidirectional relationships among food, dietary antioxidants, inflammation, and body composition. They are known for their antioxidant properties and their ability to inhibit angiogenesis, metastasis, and cell proliferation. Additionally, they promote cell survival, modulate immune and inflammatory responses, and inactivate pro-carcinogens. These actions collectively contribute to their role in cancer prevention. In different investigations, antioxidant supplements containing vitamins have been shown to lower the risk of specific cancer types. In contrast, some evidence suggests that taking antioxidant supplements can increase the risk of developing cancer. Ultimately, collaborative efforts among immunologists, clinicians, nutritionists, and dietitians are imperative for designing well-structured nutritional trials to corroborate the clinical efficacy of dietary therapy in managing inflammation and preventing carcinogenesis. This review seeks to explore the interrelationships among dietary antioxidants, dietary fiber, and the gut microbiome, with a particular focus on their potential implications in inflammation and cancer.
Collapse
Affiliation(s)
- Camelia Munteanu
- Department of Plant Culture, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania
| | - Betty Schwartz
- The Institute of Biochemistry, Food Science and Nutrition, The School of Nutritional Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| |
Collapse
|
12
|
Jiang M, Wang J, Li Z, Xu D, Jing J, Li F, Ding J, Li Q. Dietary Fiber-Derived Microbial Butyrate Suppresses ILC2-Dependent Airway Inflammation in COPD. Mediators Inflamm 2024; 2024:6263447. [PMID: 39015676 PMCID: PMC11251798 DOI: 10.1155/2024/6263447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 05/27/2024] [Accepted: 06/08/2024] [Indexed: 07/18/2024] Open
Abstract
Group 2 innate lymphoid cells (ILC2) strongly modulate COPD pathogenesis. However, the significance of microbiota in ILC2s remains unelucidated. Herein, we investigated the immunomodulatory role of short-chain fatty acids (SCFAs) in regulating ILC2-associated airway inflammation and explores its associated mechanism in COPD. In particular, we assessed the SCFA-mediated regulation of survival, proliferation, and cytokine production in lung sorted ILC2s. To elucidate butyrate action in ILC2-driven inflammatory response in COPD models, we administered butyrate to BALB/c mice via drinking water. We revealed that SCFAs, especially butyrate, derived from dietary fiber fermentation by gut microbiota inhibited pulmonary ILC2 functions and suppressed both IL-13 and IL-5 synthesis by murine ILC2s. Using in vivo and in vitro experimentation, we validated that butyrate significantly ameliorated ILC2-induced inflammation. We further demonstrated that butyrate suppressed ILC2 proliferation and GATA3 expression. Additionally, butyrate potentially utilized histone deacetylase (HDAC) inhibition to enhance NFIL3 promoter acetylation, thereby augmenting its expression, which eventually inhibited cytokine production in ILC2s. Taken together, the aforementioned evidences demonstrated a previously unrecognized role of microbial-derived SCFAs on pulmonary ILC2s in COPD. Moreover, our evidences suggest that metabolomics and gut microbiota modulation may prevent lung inflammation of COPD.
Collapse
Affiliation(s)
- Min Jiang
- Xinjiang Key Laboratory of Respiratory Disease ResearchTraditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830011, Xinjiang, China
| | - Jing Wang
- Xinjiang Key Laboratory of Respiratory Disease ResearchTraditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830011, Xinjiang, China
| | - Zheng Li
- Xinjiang Key Laboratory of Respiratory Disease ResearchTraditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830011, Xinjiang, China
| | - Dan Xu
- Xinjiang Key Laboratory of Respiratory Disease ResearchTraditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830011, Xinjiang, China
| | - Jing Jing
- Xinjiang Key Laboratory of Respiratory Disease ResearchTraditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830011, Xinjiang, China
| | - Fengsen Li
- Xinjiang Key Laboratory of Respiratory Disease ResearchTraditional Chinese Medical Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830011, Xinjiang, China
| | - Jianbing Ding
- Department of ImmunologyCollege of Basic MedicineXinjiang Medical University, Urumqi 830011, Xinjiang, China
| | - Qifeng Li
- Xinjiang Institute of PediatricsXinjiang Hospital of Beijing Children's HospitalChildren's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830011, Xinjiang, China
| |
Collapse
|
13
|
Juarez D, Handal-Silva A, Morán-Perales JL, Torres-Cifuentes DM, Flores G, Treviño S, Moreno-Rodriguez A, Guevara J, Diaz A. New insights into sodium phenylbutyrate as a pharmacotherapeutic option for neurological disorders. Synapse 2024; 78:e22301. [PMID: 38819491 DOI: 10.1002/syn.22301] [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: 08/14/2023] [Revised: 04/01/2024] [Accepted: 05/14/2024] [Indexed: 06/01/2024]
Abstract
Neurological disorders (NDs) are diseases of the central and peripheral nervous systems that affect more than one billion people worldwide. The risk of developing an ND increases with age due to the vulnerability of the different organs and systems to genetic, environmental, and social changes that consequently cause motor and cognitive deficits that disable the person from their daily activities and individual and social productivity. Intrinsic factors (genetic factors, age, gender) and extrinsic factors (addictions, infections, or lifestyle) favor the persistence of systemic inflammatory processes that contribute to the evolution of NDs. Neuroinflammation is recognized as a common etiopathogenic factor of ND. The study of new pharmacological options for the treatment of ND should focus on improving the characteristic symptoms and attacking specific molecular targets that allow the delay of damage processes such as neuroinflammation, oxidative stress, cellular metabolic dysfunction, and deregulation of transcriptional processes. In this review, we describe the possible role of sodium phenylbutyrate (NaPB) in the pathogenesis of Alzheimer's disease, hepatic encephalopathy, aging, Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis; in addition, we describe the mechanism of action of NaPB and its beneficial effects that have been shown in various in vivo and in vitro studies to delay the evolution of any ND.
Collapse
Affiliation(s)
- Daniel Juarez
- Faculty of Chemical Sciences, Benemeritus Autonomous University of Puebla, Puebla, Puebla, Mexico
| | - Anabella Handal-Silva
- Department of Reproductive Biology and Toxicology, Institute of Sciences. Benemeritus Autonomous University of Puebla, Puebla, Puebla, Mexico
| | - Jose Luis Morán-Perales
- Department of Reproductive Biology and Toxicology, Institute of Sciences. Benemeritus Autonomous University of Puebla, Puebla, Puebla, Mexico
| | - Diana M Torres-Cifuentes
- Faculty of Chemical Sciences, Benemeritus Autonomous University of Puebla, Puebla, Puebla, Mexico
| | - Gonzalo Flores
- Institute of Physiology, Benemeritus Autonomous University of Puebla, Puebla, Puebla, Mexico
| | - Samuel Treviño
- Institute of Physiology, Benemeritus Autonomous University of Puebla, Puebla, Puebla, Mexico
| | - Albino Moreno-Rodriguez
- Faculty of Chemical Sciences, Benemeritus Autonomous University of Puebla, Puebla, Puebla, Mexico
| | - Jorge Guevara
- Faculty of Medicine, Department of Biochemistry, National Autonomous University of Mexico, Mexico City, Mexico
| | - Alfonso Diaz
- Institute of Physiology, Benemeritus Autonomous University of Puebla, Puebla, Puebla, Mexico
| |
Collapse
|
14
|
Basso PJ, Gauthier T, Palomares F, López-Enríquez S, Tsai S. Editorial: Immunometabolism: bridging the gap between immunology and nutrition. Front Nutr 2024; 11:1436894. [PMID: 38933887 PMCID: PMC11203395 DOI: 10.3389/fnut.2024.1436894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Accepted: 05/28/2024] [Indexed: 06/28/2024] Open
Affiliation(s)
- Paulo José Basso
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, AB, Canada
| | - Thierry Gauthier
- Mucosal Immunology Section, National Institutes of Dental and Craniofacial Research (NIDCR), National Institutes of Health, Bethesda, MD, United States
| | - Francisca Palomares
- Department of Medical Biochemistry, Molecular Biology, and Immunology, School of Medicine, Universidad de Sevilla, Seville, Spain
- Institute of Biomedicine of Seville (IBiS), Virgen del Rocío University Hospital, Virgen Macarena University Hospital, University of Seville, CSIC, Seville, Spain
| | - Soledad López-Enríquez
- Department of Medical Biochemistry, Molecular Biology, and Immunology, School of Medicine, Universidad de Sevilla, Seville, Spain
- Institute of Biomedicine of Seville (IBiS), Virgen del Rocío University Hospital, Virgen Macarena University Hospital, University of Seville, CSIC, Seville, Spain
| | - Sue Tsai
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, AB, Canada
| |
Collapse
|
15
|
Martínez-Martínez AB, Lamban-Per BM, Lezaun M, Rezusta A, Arbones-Mainar JM. Exploring Functional Products and Early-Life Dynamics of Gut Microbiota. Nutrients 2024; 16:1823. [PMID: 38931178 PMCID: PMC11206896 DOI: 10.3390/nu16121823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 05/31/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Research on the microbiome has progressed from identifying specific microbial communities to exploring how these organisms produce and modify metabolites that impact a wide range of health conditions, including gastrointestinal, metabolic, autoimmune, and neurodegenerative diseases. This review provides an overview of the bacteria commonly found in the intestinal tract, focusing on their main functional outputs. We explore biomarkers that not only indicate a well-balanced microbiota but also potential dysbiosis, which could foreshadow susceptibility to future health conditions. Additionally, it discusses the establishment of the microbiota during the early years of life, examining factors such as gestational age at birth, type of delivery, antibiotic intake, and genetic and environmental influences. Through a comprehensive analysis of current research, this article aims to enhance our understanding of the microbiota's foundational development and its long-term implications for health and disease management.
Collapse
Affiliation(s)
- Ana B. Martínez-Martínez
- Facultad de Ciencias de la Salud, Universidad de Zaragoza, 50009 Zaragoza, Spain;
- Instituto de Investigación Sanitaria Aragón, 50009 Zaragoza, Spain;
| | - Belen M. Lamban-Per
- Department of Clinical Microbiology, Miguel Servet University Hospital, 50009 Zaragoza, Spain; (B.M.L.-P.); (M.L.)
| | - Maria Lezaun
- Department of Clinical Microbiology, Miguel Servet University Hospital, 50009 Zaragoza, Spain; (B.M.L.-P.); (M.L.)
| | - Antonio Rezusta
- Instituto de Investigación Sanitaria Aragón, 50009 Zaragoza, Spain;
- Department of Clinical Microbiology, Miguel Servet University Hospital, 50009 Zaragoza, Spain; (B.M.L.-P.); (M.L.)
| | - Jose M. Arbones-Mainar
- Department of Clinical Microbiology, Miguel Servet University Hospital, 50009 Zaragoza, Spain; (B.M.L.-P.); (M.L.)
- Adipocyte and Fat Biology Laboratory (AdipoFat), Instituto Aragonés de Ciencias de la Salud (IACS), 50009 Zaragoza, Spain
- CIBER Fisiopatología Obesidad y Nutrición (CIBERObn), Instituto Salud Carlos III, 28029 Madrid, Spain
| |
Collapse
|
16
|
Zhu X, Zhang X, Shen J, Zheng S, Li H, Han B, Zhang C, Chen M, Sun Q, Wu J. Gut microbiota-dependent modulation of pre-metastatic niches by Jianpi Yangzheng decoction in the prevention of lung metastasis of gastric cancer. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 128:155413. [PMID: 38513377 DOI: 10.1016/j.phymed.2024.155413] [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: 08/16/2023] [Revised: 01/15/2024] [Accepted: 02/03/2024] [Indexed: 03/23/2024]
Abstract
AIM OF THE STUDY To evaluate the in vitro and in vivo anti-metastasis efficacy of Jianpi Yangzheng (JPYZ) decoction against gastric cancer (GC) and its potential mechanisms. MATERIALS AND METHODS The distant metastasis of GC cells administered via tail vein injection was assessed using the pre-metastatic niche (PMN) model. 16S rRNA sequencing and GC-MS/MS were applied to determine the component of the gut microbiota and content of short-chain fatty acids (SCFAs) in feces of mice, respectively. The proportion of myeloid-derived suppressor cells (MDSCs) in the lung was evaluated by flow cytometry and immunofluorescence. Serum or tissue levels of inflammation factors including IL-6, IL-10 and TGF-β were determined by ELISA or Western blot respectively. RESULTS Injecting GC cells into the tail vein of mice led to the development of lung metastases and also resulted in alterations in the composition of gut microbiota and the levels of SCFAs produced. Nevertheless, JPYZ treatment robustly impeded the effect of GC cells administration. Mechanically, JPYZ treatment not only prevented the alteration in gut microbiota structure, but also restored the SCFAs content induced by GC cells administration. Specifically, JPYZ treatment recovered the relative abundance of genera Moryella, Helicobacter, Lachnoclostridium, Streptococcus, Tuzzerella, GCA-900066575, uncultured_Lachnospiraceae, Rikenellaceae_RC9_gut_group and uncultured_bacterium_Muribaculaceae to near the normal control levels. In addition, JPYZ abrogated MDSCs accumulation in the lung tissue and blocked inflammation factors overproduction in the serum and lung tissues, which subsequently impede the formation of the immunosuppressive microenvironment. Correlation analysis revealed that the prevalence of Rikenellaceae in the model group exhibited a positive correlation with MDSCs proportion and inflammation factor levels. Conversely, the scarcity of Muribaculaceae in the model group showed a negative correlation with these parameters. This suggests that JPYZ might exert an influence on the gut microbiota and their metabolites, such as SCFAs, potentially regulating the formation of the PMN and consequently impacting the outcome of GC metastasis. CONCLUSION These findings suggest that GC cells facilitate metastasis by altering the gut microbiota composition, affecting the production of SCFAs, and recruiting MDSCs to create a pro-inflammatory pre-metastatic niche. JPYZ decoction counteracts this process by reshaping the gut microbiota structure, enhancing SCFA production, and inhibiting the formation of the pre-metastatic microenvironment, thereby exerting an anti-metastatic effect.
Collapse
Affiliation(s)
- Xiaofei Zhu
- Department of Laboratory Medicine, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, Jiangsu 210029, China
| | - Xingxing Zhang
- Jiangsu Province Key Laboratory of Tumor Systems Biology and Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, Jiangsu 210029, China
| | - Junyu Shen
- No. 1 Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Shanshan Zheng
- No. 1 Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Huaizhi Li
- No. 1 Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Bo Han
- No. 1 Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Cancan Zhang
- No. 1 Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Menglin Chen
- No. 1 Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Qingmin Sun
- Jiangsu Province Key Laboratory of Tumor Systems Biology and Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, Jiangsu 210029, China.
| | - Jian Wu
- Jiangsu Province Key Laboratory of Tumor Systems Biology and Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, Jiangsu 210029, China.
| |
Collapse
|
17
|
Ruhnke N, Beyer ASL, Kaemmerer D, Sänger J, Schulz S, Lupp A. Expression of free fatty acid receptor 2 in normal and neoplastic tissues. Exp Mol Pathol 2024; 137:104902. [PMID: 38788249 DOI: 10.1016/j.yexmp.2024.104902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 03/22/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024]
Abstract
OBJECTIVE Little information is available concerning protein expression of the free fatty acid receptor 2 (FFAR2), especially in tumours. Therefore, the aim of the present study was to comprehensively characterise the expression profile of FFAR2 in a large series of human normal and neoplastic tissues using immunohistochemistry thus providing a basis for further in-depth investigations into its potential diagnostic or therapeutic importance. METHODS We developed a novel rabbit polyclonal anti-FFAR2 antibody, 0524, directed against the C-terminal region of human FFAR2. Antibody specificity was confirmed via Western blot analyses and immunocytochemistry using the FFAR2-expressing cell line BON-1 and FFAR2-specific small interfering RNA as well as native and FFAR2-transfected HEK-293 cells. The antibody was then used for immunohistochemical analyses of various formalin-fixed, paraffin-embedded specimens of normal and neoplastic human tissues. RESULTS In normal tissues, FFAR2 was mainly present in distinct cell populations of the cerebral cortex, follicular cells and C cells of the thyroid, cardiomyocytes of the heart, bronchial epithelia and glands, hepatocytes and bile duct epithelia of the liver, gall bladder epithelium, exocrine and β-cells of the endocrine pancreas, glomerular mesangial cells and podocytes as well as collecting ducts of the kidney, intestinal mucosa (particularly enteroendocrine cells), prostate epithelium, seminiferous tubules of the testicles, and placental syncytiotrophoblasts. In neoplastic tissues, FFAR2 was particularly prevalent in papillary thyroid carcinomas, parathyroid adenomas, and gastric, colon, pancreatic, hepatocellular, cholangiocellular, urinary bladder, breast, cervical, and ovarian carcinomas. CONCLUSIONS We generated and characterised a novel rabbit polyclonal anti-human FFAR2 antibody that is well-suited for visualising FFAR2 expression in human routine pathology tissues. This antibody is also suitable for Western blot and immunocytochemistry experiments. To our knowledge, this antibody enabled the first broad FFAR2 protein expression profile in various normal and neoplastic human tissues.
Collapse
Affiliation(s)
- Niklas Ruhnke
- Institute of Pharmacology and Toxicology, Jena University Hospital, Jena, Germany
| | | | - Daniel Kaemmerer
- Department of General and Visceral Surgery, Zentralklinik Bad Berka, Bad Berka, Germany
| | - Jörg Sänger
- Laboratory of Pathology and Cytology Bad Berka, Bad Berka, Germany
| | - Stefan Schulz
- Institute of Pharmacology and Toxicology, Jena University Hospital, Jena, Germany
| | - Amelie Lupp
- Institute of Pharmacology and Toxicology, Jena University Hospital, Jena, Germany.
| |
Collapse
|
18
|
Li H, Wang N, Zhang D, Wu J, Tan S, Li Y, Zhang N, Yang L, Wang X. Comparative study on the structure characterization and activity of RS5 made from Canna edulis native starch and high-amylose corn starch. Int J Biol Macromol 2024; 271:132340. [PMID: 38816293 DOI: 10.1016/j.ijbiomac.2024.132340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 05/06/2024] [Accepted: 05/11/2024] [Indexed: 06/01/2024]
Abstract
In this study, the high amylose corn starch and Canna edulis native starch were compounded with lauric acid and fermented by human fecal inoculation in vitro. Changes in beneficial metabolite profile and microbiota composition were evaluated. The structural properties showed that both NS-12C and HAMS-12C formed V-shaped crystals under the same preparation method, but NS-12C had a higher composite index and resistance content than HAMS-12C. At the end of fermentation, the starch-lauric acid complexes prepared from the two types of starch significantly promoted the formation of short-chain fatty acids and the contents of acetic acid, butyric acid and valeric acid produced by NS-12C were higher than those of HAMS-12C(p>0.05). HAMS-12C and NS-12C both increased the relative abundance of Blautia. Notably, NS-12C also increased the relative abundance of beneficial bacteria Bifidobacterium and Meganomas, while HAMS-12C did not. These results suggested that this effect may be related to starch type and provide a basis for designing and producing functional foods to improve intestinal health in Canna edulis native starch.
Collapse
Affiliation(s)
- Houxier Li
- School of Chinese Meteria Medica, Beijing University of Chinese Medicine, Northeast Corner of the Intersection of Sunshine South Street and Baiyang East Road, Fang-Shan District, Beijing 102488, China
| | - Nan Wang
- School of Chinese Meteria Medica, Beijing University of Chinese Medicine, Northeast Corner of the Intersection of Sunshine South Street and Baiyang East Road, Fang-Shan District, Beijing 102488, China
| | - Dachuan Zhang
- School of Chinese Meteria Medica, Beijing University of Chinese Medicine, Northeast Corner of the Intersection of Sunshine South Street and Baiyang East Road, Fang-Shan District, Beijing 102488, China
| | - Jiahui Wu
- School of Chinese Meteria Medica, Beijing University of Chinese Medicine, Northeast Corner of the Intersection of Sunshine South Street and Baiyang East Road, Fang-Shan District, Beijing 102488, China
| | - Shuting Tan
- School of Chinese Meteria Medica, Beijing University of Chinese Medicine, Northeast Corner of the Intersection of Sunshine South Street and Baiyang East Road, Fang-Shan District, Beijing 102488, China
| | - Yan Li
- School of Chinese Meteria Medica, Beijing University of Chinese Medicine, Northeast Corner of the Intersection of Sunshine South Street and Baiyang East Road, Fang-Shan District, Beijing 102488, China
| | - Nan Zhang
- School of Chinese Meteria Medica, Beijing University of Chinese Medicine, Northeast Corner of the Intersection of Sunshine South Street and Baiyang East Road, Fang-Shan District, Beijing 102488, China
| | - Li Yang
- School of Chinese Meteria Medica, Beijing University of Chinese Medicine, Northeast Corner of the Intersection of Sunshine South Street and Baiyang East Road, Fang-Shan District, Beijing 102488, China
| | - Xueyong Wang
- School of Chinese Meteria Medica, Beijing University of Chinese Medicine, Northeast Corner of the Intersection of Sunshine South Street and Baiyang East Road, Fang-Shan District, Beijing 102488, China.
| |
Collapse
|
19
|
Rosas-Campos R, Sandoval-Rodríguez AS, Rodríguez-Sanabria JS, Vazquéz-Esqueda ÁO, Alfaro-Martinez CR, Escutia-Gutiérrez R, Vega-Magaña N, Peña-Rodríguez M, Zepeda-Nuño JS, Andrade-Marcial M, Campos-Uscanga Y, Jave-Suárez LF, Santos A, Cerda-Reyes E, Almeida-López M, Martínez-López E, Herrera LA, Armendariz-Borunda J. A Novel Foodstuff Mixture Improves the Gut-Liver Axis in MASLD Mice and the Gut Microbiota in Overweight/Obese Patients. Antioxidants (Basel) 2024; 13:664. [PMID: 38929103 PMCID: PMC11200377 DOI: 10.3390/antiox13060664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 05/24/2024] [Accepted: 05/27/2024] [Indexed: 06/28/2024] Open
Abstract
Microbial community control is crucial for maintaining homeostasis of the gut-liver axis in metabolic dysfunction-associated steatotic liver disease (MASLD). Here, we show that supplementation with a mixture of Mexican foodstuffs (MexMix)-Opuntia ficus indica (nopal), Theobroma cacao (cocoa) and Acheta domesticus (crickets)-enriches several beneficial taxa in MASLD mice and overweight/obese humans. Thus, MexMix induces an important prebiotic effect. In mice, a restoration of intestinal health was observed due to the increased short-chain fatty acids (SCFAs) and intestinal crypt depth, Ocln and Cldn1 expression, and decreased Il6 and Tnfa expression. MexMix significantly reduced steatosis in the mice's liver and modified the expression of 1668 genes. By PCR, we corroborated a Tnfa and Pparg decrease, and a Cat and Sod increase. In addition, MexMix increased the hepatic NRF2 nuclear translocation and miRNA-34a, miRNA-103, and miRNA-33 decline. In overweight/obese humans, MexMix improved the body image satisfaction and reduced the fat intake. These findings indicate that this new food formulation has potential as a therapeutic approach to treat conditions associated with excessive consumption of fats and sugars.
Collapse
Affiliation(s)
- Rebeca Rosas-Campos
- Institute for Molecular Biology in Medicine and Gene Therapy, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara 44340, Mexico; (R.R.-C.); (A.S.S.-R.); (J.S.R.-S.); (Á.O.V.-E.); (C.R.A.-M.); (R.E.-G.)
| | - Ana Soledad Sandoval-Rodríguez
- Institute for Molecular Biology in Medicine and Gene Therapy, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara 44340, Mexico; (R.R.-C.); (A.S.S.-R.); (J.S.R.-S.); (Á.O.V.-E.); (C.R.A.-M.); (R.E.-G.)
| | - Jonathan Samael Rodríguez-Sanabria
- Institute for Molecular Biology in Medicine and Gene Therapy, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara 44340, Mexico; (R.R.-C.); (A.S.S.-R.); (J.S.R.-S.); (Á.O.V.-E.); (C.R.A.-M.); (R.E.-G.)
- Departamento Académico de Ciencias Básicas, Universidad Autónoma de Guadalajara, Zapopan 45129, Mexico
| | - Ángel Omar Vazquéz-Esqueda
- Institute for Molecular Biology in Medicine and Gene Therapy, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara 44340, Mexico; (R.R.-C.); (A.S.S.-R.); (J.S.R.-S.); (Á.O.V.-E.); (C.R.A.-M.); (R.E.-G.)
| | - Carlos Roberto Alfaro-Martinez
- Institute for Molecular Biology in Medicine and Gene Therapy, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara 44340, Mexico; (R.R.-C.); (A.S.S.-R.); (J.S.R.-S.); (Á.O.V.-E.); (C.R.A.-M.); (R.E.-G.)
| | - Rebeca Escutia-Gutiérrez
- Institute for Molecular Biology in Medicine and Gene Therapy, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara 44340, Mexico; (R.R.-C.); (A.S.S.-R.); (J.S.R.-S.); (Á.O.V.-E.); (C.R.A.-M.); (R.E.-G.)
| | - Natali Vega-Magaña
- Instituto de Investigación en Ciencias Biomédicas (IICB), Health Sciences University Center, University of Guadalajara, Guadalajara 44340, Mexico;
| | - Marcela Peña-Rodríguez
- Laboratorio de Diagnóstico de Enfermedades Emergentes y Reemergentes (LaDEER), Health Sciences University Center, University of Guadalajara, Guadalajara 44340, Mexico;
| | - José Sergio Zepeda-Nuño
- Centro de Investigación y Diagnóstico de Patología, Health Sciences University Center, University of Guadalajara, Guadalajara 44340, Mexico;
| | | | | | - Luis Felipe Jave-Suárez
- División de Inmunología, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara 44340, Mexico;
| | - Arturo Santos
- Tecnologico de Monterrey, School of Medicine and Health Sciences, Zapopan 45138, Mexico; (A.S.); (L.A.H.)
| | | | - Mónica Almeida-López
- Health Sciences University Center, University of Guadalajara, Guadalajara 44340, Mexico;
| | - Erika Martínez-López
- Institute of Translational Nutrigenetics and Nutrigenomics, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara 44340, Mexico;
| | - Luis Alonso Herrera
- Tecnologico de Monterrey, School of Medicine and Health Sciences, Zapopan 45138, Mexico; (A.S.); (L.A.H.)
- Cancer Research Unit, National Institute of Cancerology-Institute of Biomedical Research, National Autonomous University of Mexico (UNAM), Mexico City 70228, Mexico
| | - Juan Armendariz-Borunda
- Institute for Molecular Biology in Medicine and Gene Therapy, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara 44340, Mexico; (R.R.-C.); (A.S.S.-R.); (J.S.R.-S.); (Á.O.V.-E.); (C.R.A.-M.); (R.E.-G.)
- Tecnologico de Monterrey, School of Medicine and Health Sciences, Zapopan 45138, Mexico; (A.S.); (L.A.H.)
| |
Collapse
|
20
|
Liu S, Ge X, Xu X, Zhang K, Lu X. Alterations of Gut Microbiota in Pyogenic Liver Abscess Patients with and without Type 2 Diabetes Mellitus. Infect Drug Resist 2024; 17:2149-2158. [PMID: 38828371 PMCID: PMC11144416 DOI: 10.2147/idr.s456423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 05/08/2024] [Indexed: 06/05/2024] Open
Abstract
Purpose The clinical manifestations of pyogenic liver abscess (PLA) vary between patients with and without diabetes mellitus (DM). However, the relationship between PLA and the gut microbiome remains unknown. This study analyzed the composition of gut microbiota in PLA patients with and without DM and healthy controls (HCs) with the goal of identifying potential reasons for the observed variations in clinical manifestations. Patients and Methods Using 16S ribosomal RNA(16S rRNA) gene sequencing, we analyzed the compositions of gut microbiota in 32 PLA patients with DM, 32 PLA patients without DM, and 29 matched HCs. Results In PLA patients with DM, the D-dimer level, fibrinogen degradation products, and thrombin time were significantly higher compared to the PLA patients without DM (P < 0.05). The abundance and diversity of intestinal flora were reduced in both groups of PLA patients compared with the HCs (P < 0.05). Specifically, the PLA patients with DM showed significant decreases in the relative abundances of Bacteroides, Blautia, Prevotella9, and Faecalibacterium, whereas Enterococcus and Escherichia-Shigella were relatively more abundant (P < 0.05). Compared to PLA patients without DM, those with DM had lower relative abundances of Lactobacillus and Klebsiella (P < 0.05) and showed different bacterial flora, including Anaerosporobacter and Megamonas. Conclusion PLA patients with DM exhibited more severe clinical manifestations of PLA compared to patients without DM. It is important to monitor blood coagulation in PLA patients with DM to prevent the development of thrombotic diseases. Additionally, PLA patients with DM exhibit distinct differences in the composition and diversity of their intestinal flora compared to both PLA patients without DM and HCs.
Collapse
Affiliation(s)
- Shanshan Liu
- Department of Laboratory Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing, People’s Republic of China
- Department of Infection Management, The Affiliated Lianyungang Hospital of Xuzhou Medical University, The First People’s Hospital of Lianyungang, Jiangsu, People’s Republic of China
| | - Xiaomeng Ge
- Microbial Resources and Big Data Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Xizhan Xu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Kang Zhang
- Department of Laboratory Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Xinxin Lu
- Department of Laboratory Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing, People’s Republic of China
| |
Collapse
|
21
|
Cheng ZX, Zhang J. Exploring the Role of Gut-Lung Interactions in COPD Pathogenesis: A Comprehensive Review on Microbiota Characteristics and Inflammation Modulation. CHRONIC OBSTRUCTIVE PULMONARY DISEASES (MIAMI, FLA.) 2024; 11:311-325. [PMID: 38563747 PMCID: PMC11216226 DOI: 10.15326/jcopdf.2023.0442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/21/2024] [Indexed: 04/04/2024]
Abstract
Chronic obstructive pulmonary disease (COPD) is a paramount contributor to global morbidity and mortality. Over the past decade, the concept of the "gut-lung axis" has emerged, offering a lens through which to examine the intricate interplay between the host, microbiome, and respiratory diseases, including COPD. An expanding body of evidence underscores that the composition of both the gastrointestinal and respiratory microbiome deviates in COPD patients compared to healthy individuals, leading to distinct host immune responses and clinical manifestations. The objective of this review is to provide a concise overview of the role both gut and respiratory microbiome play in the development of COPD. This was accomplished by compiling current literature on the microbiome profile in stable and exacerbated cases of COPD, as well as exploring the biological mechanisms through a discussion of relevant experiments conducted on murine models. Hallmark characteristics of the microbial profile in COPD encompass reduced Prevotella species in the respiratory microbiome, culminating in a loss of anti-inflammatory protection, and diminished Bacteroidetes in the gut microbiome, leading to a decrease in protective short-chain fatty acids. The proliferation of Proteobacteria, particularly the Haemophilus species, Moraxellaspecies, and Pseudomonas species contribute to COPD pathologies via recognition of proinflammatory lipopolysaccharide via Toll-like receptors. As a consequence, deteriorated pulmonary function, enhanced severity, increased onset of exacerbations, and elevated mortality were observed.
Collapse
Affiliation(s)
- Zi-Xuan Cheng
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Shanghai, China
- *PhD candidate
| | - Jing Zhang
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Shanghai, China
| |
Collapse
|
22
|
McCrory C, Lenardon M, Traven A. Bacteria-derived short-chain fatty acids as potential regulators of fungal commensalism and pathogenesis. Trends Microbiol 2024:S0966-842X(24)00089-1. [PMID: 38729839 DOI: 10.1016/j.tim.2024.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/08/2024] [Accepted: 04/16/2024] [Indexed: 05/12/2024]
Abstract
The human gastrointestinal microbiome encompasses bacteria, fungi, and viruses forming complex bionetworks which, for organismal health, must be in a state of homeostasis. An important homeostatic mechanism derives from microbial competition, which maintains the relative abundance of microbial species in a healthy balance. Microbes compete for nutrients and secrete metabolites that inhibit other microbes. Short-chain fatty acids (SCFAs) are one such class of metabolites made by gut bacteria to very high levels. SCFAs are metabolised by microbes and host cells and have multiple roles in regulating cell physiology. Here, we review the mechanisms by which SCFAs regulate the fungal gut commensal Candida albicans. We discuss SCFA's ability to inhibit fungal growth, limit invasive behaviours and modulate cell surface antigens recognised by immune cells. We review the mechanisms underlying these roles: regulation of gene expression, metabolism, signalling and SCFA-driven post-translational protein modifications by acylation, which contribute to changes in acylome dynamics of C. albicans with potentially large consequences for cell physiology. Given that the gut mycobiome is a reservoir for systemic disease and has also been implicated in inflammatory bowel disease, understanding the mechanisms by which bacterial metabolites, such as SCFAs, control the mycobiome might provide therapeutic avenues.
Collapse
Affiliation(s)
- Christopher McCrory
- Department of Biochemistry and Molecular Biology, Infection Program, Biomedicine Discovery Institute, Monash University, Clayton 3800, Victoria, Australia; Centre to Impact AMR, Monash University, Clayton 3800, Victoria, Australia
| | - Megan Lenardon
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, 2052, New South Wales, Australia
| | - Ana Traven
- Department of Biochemistry and Molecular Biology, Infection Program, Biomedicine Discovery Institute, Monash University, Clayton 3800, Victoria, Australia; Centre to Impact AMR, Monash University, Clayton 3800, Victoria, Australia.
| |
Collapse
|
23
|
Raghu AK, Palanikumar I, Raman K. Designing function-specific minimal microbiomes from large microbial communities. NPJ Syst Biol Appl 2024; 10:46. [PMID: 38702322 PMCID: PMC11068740 DOI: 10.1038/s41540-024-00373-1] [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: 08/09/2023] [Accepted: 04/17/2024] [Indexed: 05/06/2024] Open
Abstract
Microorganisms exist in large communities of diverse species, exhibiting various functionalities. The mammalian gut microbiome, for instance, has the functionality of digesting dietary fibre and producing different short-chain fatty acids. Not all microbes present in a community contribute to a given functionality; it is possible to find a minimal microbiome, which is a subset of the large microbiome, that is capable of performing the functionality while maintaining other community properties such as growth rate and metabolite production. Such a minimal microbiome will also contain keystone species for SCFA production in that community. In this work, we present a systematic constraint-based approach to identify a minimal microbiome from a large community for a user-proposed function. We employ a top-down approach with sequential deletion followed by solving a mixed-integer linear programming problem with the objective of minimising the L1-norm of the membership vector. Notably, we consider quantitative measures of community growth rate and metabolite production rates. We demonstrate the utility of our algorithm by identifying the minimal microbiomes corresponding to three model communities of the gut, and discuss their validity based on the presence of the keystone species in the community. Our approach is generic, flexible and finds application in studying a variety of microbial communities. The algorithm is available from https://github.com/RamanLab/minMicrobiome .
Collapse
Affiliation(s)
- Aswathy K Raghu
- Centre for Integrative Biology and Systems mEdicine (IBSE), Indian Institute of Technology (IIT) Madras, Chennai, 600 036, India
- Robert Bosch Centre for Data Science and Artificial Intelligence (RBCDSAI), IIT Madras, Chennai, 600 036, India
- Department of Chemical and Biological Engineering, Northwestern University, IL, 60208, USA
| | - Indumathi Palanikumar
- Centre for Integrative Biology and Systems mEdicine (IBSE), Indian Institute of Technology (IIT) Madras, Chennai, 600 036, India
- Robert Bosch Centre for Data Science and Artificial Intelligence (RBCDSAI), IIT Madras, Chennai, 600 036, India
- Department of Biotechnology, Bhupat Jyoti Mehta School of Biosciences, IIT Madras, Chennai, 600 036, India
| | - Karthik Raman
- Centre for Integrative Biology and Systems mEdicine (IBSE), Indian Institute of Technology (IIT) Madras, Chennai, 600 036, India.
- Robert Bosch Centre for Data Science and Artificial Intelligence (RBCDSAI), IIT Madras, Chennai, 600 036, India.
- Department of Biotechnology, Bhupat Jyoti Mehta School of Biosciences, IIT Madras, Chennai, 600 036, India.
- Department of Data Science and AI, Wadhwani School of Data Science and AI, IIT Madras, Chennai, 600 036, India.
| |
Collapse
|
24
|
Cheng ZX, Hua JL, Jie ZJ, Li XJ, Zhang J. Genetic Insights into the Gut-Lung Axis: Mendelian Randomization Analysis on Gut Microbiota, Lung Function, and COPD. Int J Chron Obstruct Pulmon Dis 2024; 19:643-653. [PMID: 38464560 PMCID: PMC10921945 DOI: 10.2147/copd.s441242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 02/21/2024] [Indexed: 03/12/2024] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) is a respiratory disorder with a complex etiology involving genetic and environmental factors. The dysbiosis of gut microbiota has been implicated in COPD. Mendelian Randomization (MR) provides a tool to investigate causal links using genetic variants as instrumental variables. This study aims to employ MR analysis to explore the causal relationship between gut microbiota, lung function, and COPD. Methods We utilized genome-wide association study (GWAS) data from MiBioGen, UK Biobank and FinnGen, which were related to gut microbial taxa, lung function parameters including forced vital capacity in one second (FEV1), forced vital capacity (FVC), and percentage of predicted FEV1 (FEV1%pred), as well as GWAS data for COPD. MR analysis was conducted to assess the causal effects of gut microbiota on lung function and the risk of COPD. Sensitivity analysis was utilized to examine the stability of the causal relationships. Multiple testing and reverse analysis were employed to evaluate the robustness of these relationships. Results Using the IVW method, 64 causal correlations were identified. Through conducting sensitivity analysis, multiple testing, and reverse analysis, we identified 14 robust and stable causal relationships. The bacterial taxa that showed a positive association with lung function included Desulfovibrionaceae, Erysipelotrichales, Desulfovibrionales, Clostridiales, Clostridia, Deltaproteobacteria and Erysipelotrichia, while Selenomonadales and Negativicutes showed a negative association with lung function. The abundance of Holdemanella were positively correlated with the risk of COPD, while FamilyXIII exhibited a negative correlation with the risk of COPD. Conclusion Several microbial taxa were discovered to have a positive causal correlation with lung function, offering potential insights into the development of probiotics. The presence of microbial taxa negatively correlated with lung function and positively correlated with COPD emphasized the potential impact of gut microbiota dysbiosis on respiratory health.
Collapse
Affiliation(s)
- Zi-Xuan Cheng
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, People’s Republic of China
| | - Jian-Lan Hua
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, People’s Republic of China
| | - Zhi-Jun Jie
- Department of Respiratory and Critical Care Medicine, the Fifth People’s Hospital of Shanghai, Fudan University, Shanghai, People’s Republic of China
| | - Xing-Jing Li
- Department of Respiratory Medicine, Zhongshan Hospital Wusong Branch, Fudan University, Shanghai, People’s Republic of China
| | - Jing Zhang
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Shanghai Medical College, Fudan University, Shanghai, People’s Republic of China
| |
Collapse
|
25
|
Maglie R, Baldi S, Nannini G, Di Gloria L, Pallecchi M, Bartolucci G, Ramazzotti M, Niccolai E, Baffa ME, Camilla B, Solimani F, Antiga E, Amedei A. Alterations of circulating free fatty acids in patients with pemphigus vulgaris. Exp Dermatol 2024; 33:e15063. [PMID: 38532568 DOI: 10.1111/exd.15063] [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: 10/20/2023] [Revised: 02/20/2024] [Accepted: 03/12/2024] [Indexed: 03/28/2024]
Abstract
Free fatty acids (FFA) have gained research interest owing to their functions in both local and systemic immune regulation. Changes in the serum levels of anti-inflammatory short chain fatty acids (SCFA), primarily derived from the gut microbiota, and pro-inflammatory medium (MCFA) and long (LCFA) chain fatty acids, derived from either the gut microbiota or the diet, have been associated with autoimmunity. Circulating FFA were retrospectively analysed by a gas chromatography-mass spectrometry method in the serum of 18 patients with pemphigus vulgaris (PV) at the baseline and 6 months (n = 10) after immunosuppressive treatments, and 18 healthy controls (HC). Circulating FFA were correlated with the Pemphigus Disease Area Index (PDAI) and serum concentrations of interferon-gamma (IFN-γ), Interleukin (IL)-17A, IL-5, IL-10 and IL-21. Principal Component analysis computed on FFA abundances revealed significant differences in the profile of SCFA (p = 0,012), MCFA (p = 0.00015) and LCFA (p = 0,035) between PV patients and HC, which were not significantly changed by immunosuppressive treatments. PV patients showed a significantly lower serum concentration of propionic (p < 0.0005) and butyric (p < 0.0005) acids, SCFA with anti-inflammatory functions, while hexanoic (p < 0.0005) and hexadecanoic (p = 0.0006) acids, pro-inflammatory MCFA and LCFA respectively, were over-represented. Treatments induced a significant decrease of hexanoic (p = 0.035) and a further increase of hexadecanoic (p = 0.046) acids. Positive correlations emerged between IFN-γ and acetic acid (Rho = 0.60), IFN-γ and hexanoic acid (Rho = 0.46), IL-5 and both hexadecanoic acid (Rho = 0.50) and octadecanoic acid (Rho = 0.53), butyric acid and PDAI (Rho = 0.53). PV was associated with a remarked imbalance of circulating FFA compared to HC. The serum alterations of SCFA, MCFA, and LCFA may contribute to promoting inflammation in PV. Deeper insights into the immunomodulatory functions of these molecules may pave the way for personalized dietary interventions in PV patients.
Collapse
Affiliation(s)
- Roberto Maglie
- Department of Health Sciences, Section of Dermatology, University of Florence, Florence, Italy
| | - Simone Baldi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Giulia Nannini
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Leandro Di Gloria
- Department of Neuroscience, Psychology, Drug Research and Child Health NEUROFARBA, University of Florence, Florence, Italy
| | - Marco Pallecchi
- Department of Biomedical, Experimental and Clinical Sciences 'Mario Serio', University of Florence, Florence, Italy
| | - Gianluca Bartolucci
- Department of Biomedical, Experimental and Clinical Sciences 'Mario Serio', University of Florence, Florence, Italy
| | - Matteo Ramazzotti
- Department of Neuroscience, Psychology, Drug Research and Child Health NEUROFARBA, University of Florence, Florence, Italy
| | - Elena Niccolai
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Maria Efenesia Baffa
- Department of Health Sciences, Section of Dermatology, University of Florence, Florence, Italy
| | - Biagioni Camilla
- Department of Health Sciences, Section of Dermatology, University of Florence, Florence, Italy
| | - Farzan Solimani
- Department of Dermatology, Venereology and Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Emiliano Antiga
- Department of Health Sciences, Section of Dermatology, University of Florence, Florence, Italy
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
- Interdisciplinary Internal Medicine Unit, Careggi University Hospital, Florence, Italy
| |
Collapse
|
26
|
Xie X, Wang L, Dong S, Ge S, Zhu T. Immune regulation of the gut-brain axis and lung-brain axis involved in ischemic stroke. Neural Regen Res 2024; 19:519-528. [PMID: 37721279 PMCID: PMC10581566 DOI: 10.4103/1673-5374.380869] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/11/2023] [Accepted: 06/12/2023] [Indexed: 09/19/2023] Open
Abstract
Local ischemia often causes a series of inflammatory reactions when both brain immune cells and the peripheral immune response are activated. In the human body, the gut and lung are regarded as the key reactional targets that are initiated by brain ischemic attacks. Mucosal microorganisms play an important role in immune regulation and metabolism and affect blood-brain barrier permeability. In addition to the relationship between peripheral organs and central areas and the intestine and lung also interact among each other. Here, we review the molecular and cellular immune mechanisms involved in the pathways of inflammation across the gut-brain axis and lung-brain axis. We found that abnormal intestinal flora, the intestinal microenvironment, lung infection, chronic diseases, and mechanical ventilation can worsen the outcome of ischemic stroke. This review also introduces the influence of the brain on the gut and lungs after stroke, highlighting the bidirectional feedback effect among the gut, lungs, and brain.
Collapse
Affiliation(s)
- Xiaodi Xie
- Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong Province, China
| | - Lei Wang
- Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong Province, China
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Shanshan Dong
- Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong Province, China
- Department of Rehabilitation Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - ShanChun Ge
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu Province, China
| | - Ting Zhu
- Institute of Neuroregeneration & Neurorehabilitation, Department of Pathophysiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong Province, China
| |
Collapse
|
27
|
Luqman A, He M, Hassan A, Ullah M, Zhang L, Rashid Khan M, Din AU, Ullah K, Wang W, Wang G. Mood and microbes: a comprehensive review of intestinal microbiota's impact on depression. Front Psychiatry 2024; 15:1295766. [PMID: 38404464 PMCID: PMC10884216 DOI: 10.3389/fpsyt.2024.1295766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 01/22/2024] [Indexed: 02/27/2024] Open
Abstract
Depression is considered a multifaceted and intricate mental disorder of growing concern due to its significant impact on global health issues. The human gut microbiota, also known as the "second brain," has an important role in the CNS by regulating it through chemical, immunological, hormonal, and neurological processes. Various studies have found a significant bidirectional link between the brain and the gut, emphasizing the onset of depression therapies. The biological and molecular processes underlying depression and microbiota are required, as the bidirectional association may represent a novel study. However, profound insights into the stratification and diversity of the gut microbiota are still uncommon. This article investigates the emerging evidence of a bacterial relationship between the gut and the brain's neurological system and its potential pathogenicity and relevance. The interplay of microbiota, immune system, nervous system neurotransmitter synthesis, and neuroplasticity transitions is also widely studied. The consequences of stress, dietary fibers, probiotics, prebiotics, and antibiotics on the GB axis are being studied. Multiple studies revealed the processes underlying this axis and led to the development of effective microbiota-based drugs for both prevention and treatment. Therefore, the results support the hypothesis that gut microbiota influences depression and provide a promising area of research for an improved knowledge of the etiology of the disease and future therapies.
Collapse
Affiliation(s)
- Ameer Luqman
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, National and Local Joint Engineering Laboratory for Vascular Implant, Bioengineering College of Chongqing University, Chongqing, China
| | - Mei He
- Chongqing University Cancer Hospital, Chongqing, China
| | - Adil Hassan
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, National and Local Joint Engineering Laboratory for Vascular Implant, Bioengineering College of Chongqing University, Chongqing, China
- Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices, Chongqing University of Science and Technology, Chongqing, China
- JinFeng Laboratory, Chongqing, China
| | - Mehtab Ullah
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, National and Local Joint Engineering Laboratory for Vascular Implant, Bioengineering College of Chongqing University, Chongqing, China
| | | | - Muhammad Rashid Khan
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, National and Local Joint Engineering Laboratory for Vascular Implant, Bioengineering College of Chongqing University, Chongqing, China
| | - Ahmad Ud Din
- Plants for Human Health Institute, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC, United States
| | - Kamran Ullah
- Department of Biology, The University of Haripur, Haripur, Pakistan
| | - Wei Wang
- Chongqing University Cancer Hospital, Chongqing, China
| | - Guixue Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, National and Local Joint Engineering Laboratory for Vascular Implant, Bioengineering College of Chongqing University, Chongqing, China
- JinFeng Laboratory, Chongqing, China
| |
Collapse
|
28
|
Yu Y, Liu Y, Meng Z. Role of traditional Chinese medicine in age-related macular degeneration: exploring the gut microbiota's influence. Front Pharmacol 2024; 15:1356324. [PMID: 38333011 PMCID: PMC10850396 DOI: 10.3389/fphar.2024.1356324] [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: 12/15/2023] [Accepted: 01/15/2024] [Indexed: 02/10/2024] Open
Abstract
The pathogenesis of age-related macular degeneration (AMD), a degenerative retinopathy, remains unclear. Administration of anti-vascular endothelial growth factor agents, antioxidants, fundus lasers, photodynamic therapy, and transpupillary warming has proven effective in alleviating symptoms; however, these interventions cannot prevent or reverse AMD. Increasing evidence suggests that AMD risk is linked to changes in the composition, abundance, and diversity of the gut microbiota (GM). Activation of multiple signaling pathways by GM metabolites, including lipopolysaccharides, oxysterols, short-chain fatty acids (SCFAs), and bile acids (BAs), influences retinal physiology. Traditional Chinese medicine (TCM), known for its multi-component and multi-target advantages, can help treat AMD by altering GM composition and regulating the levels of certain substances, such as lipopolysaccharides, reducing oxysterols, and increasing SCFA and BA contents. This review explores the correlation between GM and AMD and interventions for the two to provide new perspectives on treating AMD with TCM.
Collapse
Affiliation(s)
- Yujia Yu
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Yong Liu
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Shandong Province Hospital of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Zhaoru Meng
- The Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR, China
| |
Collapse
|
29
|
Sapra L, Saini C, Das S, Mishra PK, Singh A, Mridha AR, Yadav PK, Srivastava RK. Lactobacillus rhamnosus (LR) ameliorates pulmonary and extrapulmonary acute respiratory distress syndrome (ARDS) via targeting neutrophils. Clin Immunol 2024; 258:109872. [PMID: 38113963 DOI: 10.1016/j.clim.2023.109872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 11/25/2023] [Accepted: 12/11/2023] [Indexed: 12/21/2023]
Abstract
Pulmonary and extrapulmonary acute respiratory distress syndrome (ARDS) is a life-threatening respiratory failure associated with high mortality. Despite progress in our understanding of the pathological mechanism causing the crippling illness, there are currently no targeted pharmaceutical treatments available for it. Recent discoveries have emphasized the existence of a potential nexus between gut and lung health fueling novel approaches including probiotics for the treatment of ARDS. We thus investigated the prophylactic-potential of Lactobacillus rhamnosus-(LR) in lipopolysaccharide (LPS)-induced pulmonary and cecal ligation puncture (CLP) induced extrapulmonary ARDS mice. Our in-vivo findings revealed that pretreatment with LR significantly ameliorated vascular-permeability (edema) of the lungs via modulating the neutrophils along with significantly reducing the expression of inflammatory-cytokines in the BALF, lungs and serum in both pulmonary and extrapulmonary mice-models. Interestingly, our ex-vivo immunofluorescence and flow cytometric data suggested that mechanistically LR via short chain fatty acids (butyrate being the most potent and efficient in ameliorating the pathophysiology of both pulmonary and extra-pulmonary ARDS) targets the phagocytic and neutrophils extracellular traps (NETs) releasing potential of neutrophils. Moreover, our in-vivo data further corroborated our ex-vivo findings and suggested that butyrate exhibits enhanced potential in ameliorating the pathophysiology of ARDS via reducing the infiltration of neutrophils into the lungs. Altogether, our study establishes the prophylactic role of LR and its associated metabolites in the prevention and management of both pulmonary and extrapulmonary ARDS via targeting neutrophils.
Collapse
Affiliation(s)
- Leena Sapra
- Translational Immunology, Osteoimmunology & Immunoporosis Lab (TIOIL), Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Chaman Saini
- Translational Immunology, Osteoimmunology & Immunoporosis Lab (TIOIL), Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Sneha Das
- Translational Immunology, Osteoimmunology & Immunoporosis Lab (TIOIL), Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Pradyumna K Mishra
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, MP 462001, India
| | - Anurag Singh
- Translational Immunology, Osteoimmunology & Immunoporosis Lab (TIOIL), Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Asit R Mridha
- Department of Pathology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Pardeep K Yadav
- Central Animal Facility, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Rupesh K Srivastava
- Translational Immunology, Osteoimmunology & Immunoporosis Lab (TIOIL), Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India.
| |
Collapse
|
30
|
Yan Q, Jia S, Li D, Yang J. The role and mechanism of action of microbiota-derived short-chain fatty acids in neutrophils: From the activation to becoming potential biomarkers. Biomed Pharmacother 2023; 169:115821. [PMID: 37952355 DOI: 10.1016/j.biopha.2023.115821] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/27/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023] Open
Abstract
Short-chain fatty acids (SCFAs), such as acetate, propionate, and butyrate, have emerged as critical mediators in the communication between the human microbiota and its host. As the first responder to the inflammatory site, neutrophils play an important role in protecting the host against bacterial infections. Recent investigations revealed that SCFAs generated from microbiota influence various neutrophil activities, including activation, migration, and generation of mediators of inflammatory processes. SCFAs have also been demonstrated to exhibit potential therapeutic benefits in a variety of disorders related to neutrophil dysfunction, including inflammatory bowel disease, viral infectious disorders, and cancer. This study aims to examine the molecular processes behind the complicated link between SCFAs and neutrophils, as well as their influence on neutrophil-driven inflammatory disorders. In addition, we will also provide an in-depth review of current research on the diagnostic and therapeutic value of SCFAs as possible biomarkers for neutrophil-related diseases.
Collapse
Affiliation(s)
- Qingzhu Yan
- Department of Ultrasound Medicine, the Second Hospital of Jilin University, Changchun 130000, China
| | - Shengnan Jia
- Digestive Diseases Center, Department of Hepatopancreatobiliary Medicine, the Second Hospital of Jilin University, Changchun 130000, China
| | - Dongfu Li
- Digestive Diseases Center, Department of Hepatopancreatobiliary Medicine, the Second Hospital of Jilin University, Changchun 130000, China.
| | - Junling Yang
- Department of Respiratory Medicine, the Second Hospital of Jilin University, Changchun 130000, China.
| |
Collapse
|
31
|
Kuang H, Yang Y, Luo H, Lv X. The impact of three carbapenems at a single-day dose on intestinal colonization resistance against carbapenem-resistant Klebsiella pneumoniae. mSphere 2023; 8:e0047923. [PMID: 38009993 PMCID: PMC10732052 DOI: 10.1128/msphere.00479-23] [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: 08/23/2023] [Accepted: 10/12/2023] [Indexed: 11/29/2023] Open
Abstract
IMPORTANCE The intestinal colonization of carbapenem-resistant Klebsiella pneumoniae (CRKP) is an important source of clinical infection. Our research showed that even single-day dose use of carbapenems caused CRKP colonization and continuous bacterial shedding, which reminds clinical doctors to prescribe carbapenems cautiously. Whenever possible, ertapenem should be the preferred choice over other carbapenems especially when the identified or highly suspected pathogens can be effectively targeted by ertapenem.
Collapse
Affiliation(s)
- Huan Kuang
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
- Division of Infectious Diseases, State Key Laboratory of Biotherapy, Chengdu, China
| | - Yongqiang Yang
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
- Division of Infectious Diseases, State Key Laboratory of Biotherapy, Chengdu, China
| | - Huan Luo
- Division of Infectious Diseases, State Key Laboratory of Biotherapy, Chengdu, China
- Center for Pathogen Research, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoju Lv
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
- Division of Infectious Diseases, State Key Laboratory of Biotherapy, Chengdu, China
| |
Collapse
|
32
|
Maslennikov R, Poluektova E, Zolnikova O, Sedova A, Kurbatova A, Shulpekova Y, Dzhakhaya N, Kardasheva S, Nadinskaia M, Bueverova E, Nechaev V, Karchevskaya A, Ivashkin V. Gut Microbiota and Bacterial Translocation in the Pathogenesis of Liver Fibrosis. Int J Mol Sci 2023; 24:16502. [PMID: 38003692 PMCID: PMC10671141 DOI: 10.3390/ijms242216502] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/11/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023] Open
Abstract
Cirrhosis is the end result of liver fibrosis in chronic liver diseases. Studying the mechanisms of its development and developing measures to slow down and regress it based on this knowledge seem to be important tasks for medicine. Currently, disorders of the gut-liver axis have great importance in the pathogenesis of cirrhosis. However, gut dysbiosis, which manifests as increased proportions in the gut microbiota of Bacilli and Proteobacteria that are capable of bacterial translocation and a decreased proportion of Clostridia that strengthen the intestinal barrier, occurs even at the pre-cirrhotic stage of chronic liver disease. This leads to the development of bacterial translocation, a process by which those microbes enter the blood of the portal vein and then the liver tissue, where they activate Kupffer cells through Toll-like receptor 4. In response, the Kupffer cells produce profibrogenic cytokines, which activate hepatic stellate cells, stimulating their transformation into myofibroblasts that produce collagen and other elements of the extracellular matrix. Blocking bacterial translocation with antibiotics, probiotics, synbiotics, and other methods could slow down the progression of liver fibrosis. This was shown in a number of animal models but requires further verification in long-term randomized controlled trials with humans.
Collapse
Affiliation(s)
- Roman Maslennikov
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
- The Interregional Public Organization “Scientific Community for the Promotion of the Clinical Study of the Human Microbiome”, 119048 Moscow, Russia
| | - Elena Poluektova
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
- The Interregional Public Organization “Scientific Community for the Promotion of the Clinical Study of the Human Microbiome”, 119048 Moscow, Russia
| | - Oxana Zolnikova
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
| | - Alla Sedova
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
| | - Anastasia Kurbatova
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
| | - Yulia Shulpekova
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
| | - Natyia Dzhakhaya
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
| | - Svetlana Kardasheva
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
| | - Maria Nadinskaia
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
| | - Elena Bueverova
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
| | - Vladimir Nechaev
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
| | - Anna Karchevskaya
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
| | - Vladimir Ivashkin
- Department of Internal Medicine, Gastroenterology and Hepatology, Sechenov University, 119048 Moscow, Russia (A.S.); (N.D.); (M.N.); (E.B.)
- The Interregional Public Organization “Scientific Community for the Promotion of the Clinical Study of the Human Microbiome”, 119048 Moscow, Russia
| |
Collapse
|
33
|
Ispas S, Tuta LA, Botnarciuc M, Ispas V, Staicovici S, Ali S, Nelson-Twakor A, Cojocaru C, Herlo A, Petcu A. Metabolic Disorders, the Microbiome as an Endocrine Organ, and Their Relations with Obesity: A Literature Review. J Pers Med 2023; 13:1602. [PMID: 38003917 PMCID: PMC10672252 DOI: 10.3390/jpm13111602] [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: 10/12/2023] [Revised: 10/26/2023] [Accepted: 10/30/2023] [Indexed: 11/26/2023] Open
Abstract
The etiology of metabolic disorders, such as obesity, has been predominantly associated with the gut microbiota, which is acknowledged as an endocrine organ that plays a crucial role in modulating energy homeostasis and host immune responses. The presence of dysbiosis has the potential to impact the functioning of the intestinal barrier and the gut-associated lymphoid tissues by allowing the transit of bacterial structural components, such as lipopolysaccharides. This, in turn, may trigger inflammatory pathways and potentially lead to the onset of insulin resistance. Moreover, intestinal dysbiosis has the potential to modify the production of gastrointestinal peptides that are linked to the feeling of fullness, hence potentially leading to an increase in food consumption. In this literature review, we discuss current developments, such as the impact of the microbiota on lipid metabolism as well as the processes by which its changes led to the development of metabolic disorders. Several methods have been developed that could be used to modify the gut microbiota and undo metabolic abnormalities. METHODS After researching different databases, we examined the PubMed collection of articles and conducted a literature review. RESULTS After applying our exclusion and inclusion criteria, the initial search yielded 1345 articles. We further used various filters to narrow down our titles analysis and, to be specific to our study, selected the final ten studies, the results of which are included in the Results section. CONCLUSIONS Through gut barrier integrity, insulin resistance, and other influencing factors, the gut microbiota impacts the host's metabolism and obesity. Although the area of the gut microbiota and its relationship to obesity is still in its initial stages of research, it offers great promise for developing new therapeutic targets that may help prevent and cure obesity by restoring the gut microbiota to a healthy condition.
Collapse
Affiliation(s)
- Sorina Ispas
- Department of Anatomy, Faculty of General Medicine, “Ovidius” University, 900470 Constanta, Romania; (S.I.); (V.I.)
| | - Liliana Ana Tuta
- Department of Clinical Medicine, Faculty of General Medicine, “Ovidius” University, 900470 Constanta, Romania
- Head of Nephrology Section, County Clinical Emergency Hospital of Constanta, 900591 Constanta, Romania
| | - Mihaela Botnarciuc
- Department of Microbiology, Faculty of General Medicine, “Ovidius” University, 900470 Constanta, Romania;
- Head of Blood Transfusions Section, County Clinical Emergency Hospital of Constanta, 900591 Constanta, Romania
| | - Viorel Ispas
- Department of Anatomy, Faculty of General Medicine, “Ovidius” University, 900470 Constanta, Romania; (S.I.); (V.I.)
- Vascular Surgery Department, Cai Ferate Hospital, 35–37 I. C. Bratianu Boulevard, 900270 Constanta, Romania
| | - Sorana Staicovici
- Family Medicine, “Regina Maria” Polyclinic, 900189 Constanta, Romania;
- Department of Histology, Faculty of General Medicine, “Ovidius” University, 900470 Constanta, Romania
| | - Sevigean Ali
- Preclinics Department II, Faculty of General Medicine, “Ovidius” University, 900470 Constanta, Romania;
- County Clinical Emergency Hospital of Constanta, 900591 Constanta, Romania
| | | | | | - Alexandra Herlo
- Department XIII, Discipline of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania;
| | - Adina Petcu
- Department of Mathematics, Biostatistics and Medical Informatics, Faculty of Pharmacy, “Ovidius” University, 900470 Constanta, Romania;
| |
Collapse
|
34
|
Ponziani FR, Coppola G, Rio P, Caldarelli M, Borriello R, Gambassi G, Gasbarrini A, Cianci R. Factors Influencing Microbiota in Modulating Vaccine Immune Response: A Long Way to Go. Vaccines (Basel) 2023; 11:1609. [PMID: 37897011 PMCID: PMC10611107 DOI: 10.3390/vaccines11101609] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/29/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Vaccine immunogenicity still represents an unmet need in specific populations, such as people from developing countries and "edge populations". Both intrinsic and extrinsic factors, such as the environment, age, and dietary habits, influence cellular and humoral immune responses. The human microbiota represents a potential key to understanding how these factors impact the immune response to vaccination, with its modulation being a potential step to address vaccine immunogenicity. The aim of this narrative review is to explore the intricate interactions between the microbiota and the immune system in response to vaccines, highlighting the state of the art in gut microbiota modulation as a novel therapeutic approach to enhancing vaccine immunogenicity and laying the foundation for future, more solid data for its translation to the clinical practice.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Rossella Cianci
- Department of Translational Medicine and Surgery, Catholic University, Fondazione Policlinico Universitario A. Gemelli, IRCCS, 00168 Rome, Italy (G.C.); (P.R.); (M.C.); (R.B.); (G.G.); (A.G.)
| |
Collapse
|
35
|
Leonov GE, Varaeva YR, Livantsova EN, Starodubova AV. The Complicated Relationship of Short-Chain Fatty Acids and Oral Microbiome: A Narrative Review. Biomedicines 2023; 11:2749. [PMID: 37893122 PMCID: PMC10604844 DOI: 10.3390/biomedicines11102749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 09/30/2023] [Accepted: 10/03/2023] [Indexed: 10/29/2023] Open
Abstract
The human oral microbiome has emerged as a focal point of research due to its profound implications for human health. The involvement of short-chain fatty acids in oral microbiome composition, oral health, and chronic inflammation is gaining increasing attention. In this narrative review, the results of early in vitro, in vivo, and pilot clinical studies and research projects are presented in order to define the boundaries of this new complicated issue. According to the results, the current research data are disputable and ambiguous. When investigating the role of SCFAs in human health and disease, it is crucial to distinguish between their local GI effects and the systemic influences. Locally, SCFAs are a part of normal oral microbiota metabolism, but the increased formation of SCFAs usually attribute to dysbiosis; excess SCFAs participate in the development of local oral diseases and in oral biota gut colonization and dysbiosis. On the other hand, a number of studies have established the positive impact of SCFAs on human health as a whole, including the reduction of chronic systemic inflammation, improvement of metabolic processes, and decrease of some types of cancer incidence. Thus, a complex and sophisticated approach with consideration of origin and localization for SCFA function assessment is demanded. Therefore, more research, especially clinical research, is needed to investigate the complicated relationship of SCFAs with health and disease and their potential role in prevention and treatment.
Collapse
Affiliation(s)
- Georgy E Leonov
- Federal Research Center of Nutrition, Biotechnology and Food Safety, 109240 Moscow, Russia
| | - Yurgita R Varaeva
- Federal Research Center of Nutrition, Biotechnology and Food Safety, 109240 Moscow, Russia
| | - Elena N Livantsova
- Federal Research Center of Nutrition, Biotechnology and Food Safety, 109240 Moscow, Russia
| | - Antonina V Starodubova
- Federal Research Center of Nutrition, Biotechnology and Food Safety, 109240 Moscow, Russia
- Therapy Faculty, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| |
Collapse
|
36
|
Zang C, Liu J, Mao M, Zhu W, Chen W, Wei B. Causal Associations Between Gut Microbiota and Psoriasis: A Mendelian Randomization Study. Dermatol Ther (Heidelb) 2023; 13:2331-2343. [PMID: 37653234 PMCID: PMC10539234 DOI: 10.1007/s13555-023-01007-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 08/04/2023] [Indexed: 09/02/2023] Open
Abstract
INTRODUCTION Previous studies have proposed a possible gut-skin axis, and linked gut microbiota to psoriasis risks. However, there is heterogeneity in existing evidence. Observational research is prone to bias, and it is hard to determine causality. Therefore, this study aims to evaluate possible causal associations between gut microbiota (GM) and psoriasis. METHODS With published large-scale GWAS (genome-wide association study) summary datasets, two-sample Mendelian randomization (MR) was performed to sort out possible causal roles of GM in psoriasis and arthropathic psoriasis (PsA). The inverse variance weighted (IVW) method was taken as the primary evaluation of causal association. As complements to the IVW method, we also applied MR-Egger, weighted median. Sensitivity analyses were conducted using Cochrane's Q test, MR-Egger intercept test, MR-PRESSO (Mendelian Randomization Pleiotropy RESidual Sum and Outlier) global test, and leave-one-out analysis. RESULTS By primary IVW analysis, we identified nominal protective roles of Bacteroidetes (odds ratio, OR 0.81, P = 0.033) and Prevotella9 (OR 0.87, P = 0.045) in psoriasis risks. Bacteroidia (OR 0.65, P = 0.03), Bacteroidales (OR 0.65, P = 0.03), and Ruminococcaceae UCG002 (OR 0.81, P = 0.038) are nominally associated with lower risks for PsA. On the other hand, Pasteurellales (OR 1.22, P = 0.033), Pasteurellaceae (OR 1.22, P = 0.033), Blautia (OR 1.46, P = 0.014), Methanobrevibacter (OR 1.27, P = 0.026), and Eubacterium fissicatena group (OR 1.21, P = 0.028) are nominal risk factors for PsA. Additionally, E. fissicatena group is a possible risk factor for psoriasis (OR 1.22, P = 0.00018). After false discovery rate (FDR) correction, E. fissicatena group remains a risk factor for psoriasis (PFDR = 0.03798). CONCLUSION We comprehensively evaluated possible causal associations of GM with psoriasis and arthropathic psoriasis, and identified several nominal associations. E. fissicatena group remains a risk factor for psoriasis after FDR correction. Our results offer promising therapeutic targets for psoriasis clinical management.
Collapse
Affiliation(s)
- Chenyang Zang
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology Furong Laboratory, Changsha, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Jie Liu
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Manyun Mao
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology Furong Laboratory, Changsha, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
| | - Wu Zhu
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology Furong Laboratory, Changsha, China.
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Changsha, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.
| | - Wangqing Chen
- The Department of Dermatology, Xiangya Hospital, Central South University, Changsha, China.
- National Engineering Research Center of Personalized Diagnostic and Therapeutic Technology Furong Laboratory, Changsha, China.
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Changsha, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.
| | - Baojian Wei
- School of Nursing, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, Shandong, China.
| |
Collapse
|
37
|
Stein RA, Riber L. Epigenetic effects of short-chain fatty acids from the large intestine on host cells. MICROLIFE 2023; 4:uqad032. [PMID: 37441522 PMCID: PMC10335734 DOI: 10.1093/femsml/uqad032] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 06/04/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023]
Abstract
Adult humans harbor at least as many microbial cells as eukaryotic ones. The largest compartment of this diverse microbial population, the gut microbiota, encompasses the collection of bacteria, archaea, viruses, and eukaryotic organisms that populate the gastrointestinal tract, and represents a complex and dynamic ecosystem that has been increasingly implicated in health and disease. The gut microbiota carries ∼100-to-150-times more genes than the human genome and is intimately involved in development, homeostasis, and disease. Of the several microbial metabolites that have been studied, short-chain fatty acids emerge as a group of molecules that shape gene expression in several types of eukaryotic cells by multiple mechanisms, which include DNA methylation changes, histone post-translational modifications, and microRNA-mediated gene silencing. Butyric acid, one of the most extensively studied short-chain fatty acids, reaches higher concentrations in the colonic lumen, where it provides a source of energy for healthy colonocytes, and its concentrations decrease towards the bottom of the colonic crypts, where stem cells reside. The lower butyric acid concentration in the colonic crypts allows undifferentiated cells, such as stem cells, to progress through the cell cycle, pointing towards the importance of the crypts in providing them with a protective niche. In cancerous colonocytes, which metabolize relatively little butyric acid and mostly rely on glycolysis, butyric acid preferentially acts as a histone deacetylase inhibitor, leading to decreased cell proliferation and increased apoptosis. A better understanding of the interface between the gut microbiota metabolites and epigenetic changes in eukaryotic cells promises to unravel in more detail processes that occur physiologically and as part of disease, help develop novel biomarkers, and identify new therapeutic modalities.
Collapse
Affiliation(s)
- Richard A Stein
- Corresponding author. Department of Chemical and Biomolecular Engineering, NYU Tandon School of Engineering, 6 MetroTech Center, Brooklyn, NY 11201, USA. Tel: +1-917-684-9438; E-mail: ;
| | - Leise Riber
- Department of Plant & Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg, Denmark
| |
Collapse
|