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Węgrzyn K, Jasińska A, Janeczek K, Feleszko W. The Role of Postbiotics in Asthma Treatment. Microorganisms 2024; 12:1642. [PMID: 39203484 PMCID: PMC11356534 DOI: 10.3390/microorganisms12081642] [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: 06/26/2024] [Revised: 08/01/2024] [Accepted: 08/08/2024] [Indexed: 09/03/2024] Open
Abstract
In recent years, there has been abundant research concerning human microbiome and its impact on the host's health. Studies have shown that not only the commensal bacteria itself, but also postbiotics, understood as inanimate microorganisms, possibly with the presence of their components, may themselves have an effect on various elements of human physiology. In this review, we take a closer look at the specific ways in which postbiotics can alter immune response in allergic asthma, which is one of the most prevalent allergic diseases in today's world and a serious subject of concern. Through altering patients' immune response, not only to allergens but also to pathogens, postbiotics could have a significant role in lowering the number of asthma exacerbations. We suggest that more profound research should be undertaken in order to launch postbiotics into clinical standards of asthma treatment, given the greatly promising findings in terms of their immunomodulating potential.
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Affiliation(s)
- Konstancja Węgrzyn
- Central Clinical Hospital, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Agnieszka Jasińska
- Department of Pediatric Pneumonology and Allergy, University Clinical Centre, Medical University of Warsaw, 02-097 Warsaw, Poland;
| | - Kamil Janeczek
- Department of Paediatric Pulmonology and Rheumatology, Medical University of Lublin, 20-059 Lublin, Poland;
| | - Wojciech Feleszko
- Department of Pediatric Pneumonology and Allergy, University Clinical Centre, Medical University of Warsaw, 02-097 Warsaw, Poland;
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2
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Sun M, Lu F, Yu D, Wang Y, Chen P, Liu S. Respiratory diseases and gut microbiota: relevance, pathogenesis, and treatment. Front Microbiol 2024; 15:1358597. [PMID: 39081882 PMCID: PMC11286581 DOI: 10.3389/fmicb.2024.1358597] [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: 01/04/2024] [Accepted: 06/26/2024] [Indexed: 08/02/2024] Open
Abstract
Preclinical evidence has firmly established a bidirectional interaction among the lung, gut, and gut microbiome. There are many complex communication pathways between the lung and intestine, which affect each other's balance. Some metabolites produced by intestinal microorganisms, intestinal immune cells, and immune factors enter lung tissue through blood circulation and participate in lung immune function. Altered gut-lung-microbiome interactions have been identified in rodent models and humans of several lung diseases such as pulmonary fibrosis, chronic obstructive pulmonary disease, lung cancer, asthma, etc. Emerging evidence suggests that microbial therapies can prevent and treat respiratory diseases, but it is unclear whether this association is a simple correlation with the pathological mechanisms of the disease or the result of causation. In this review, we summarize the complex and critical link between the gut microbiota and the lung, as well as the influence and mechanism of the gut microbiota on respiratory diseases, and discuss the role of interventions such as prebiotics and fecal bacteria transplantation on respiratory diseases. To provide a reference for the rational design of large-scale clinical studies, the direct application of microbial therapy to respiratory-related diseases can reduce the incidence and severity of diseases and accompanying complications.
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Affiliation(s)
- Mengdi Sun
- Graduate School, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Fang Lu
- Institute of Traditional Chinese Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Donghua Yu
- Institute of Traditional Chinese Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Yu Wang
- Institute of Traditional Chinese Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Pingping Chen
- Institute of Traditional Chinese Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Shumin Liu
- Institute of Traditional Chinese Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
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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.
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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
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Khatri R, Weigmann B, Shahneh F, Sudowe S, Schuppan D, Saloga J, Bellinghausen I. Prevention of allergic airway and gut inflammation in humanized mice by lactobacilli, bifidobacteria, and butyrate. Allergy 2024. [PMID: 38972005 DOI: 10.1111/all.16230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 06/26/2024] [Accepted: 06/28/2024] [Indexed: 07/08/2024]
Affiliation(s)
- Rahul Khatri
- Department of Dermatology, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
- Institute of Translational Immunology, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Benno Weigmann
- Department of Internal Medicine I, University Hospital Erlangen, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Fatemeh Shahneh
- Department of Dermatology, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
- Research Center for Immunotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | | | - Detlef Schuppan
- Institute of Translational Immunology, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
- Research Center for Immunotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Joachim Saloga
- Department of Dermatology, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
- Research Center for Immunotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Iris Bellinghausen
- Department of Dermatology, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
- Research Center for Immunotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany
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Yoon S, Park S, Jung SE, Lee C, Kim WK, Choi ID, Ko G. Fermented Milk Containing Lacticaseibacillus rhamnosus SNU50430 Modulates Immune Responses and Gut Microbiota in Antibiotic-Treated Mice. J Microbiol Biotechnol 2024; 34:1299-1306. [PMID: 38755001 PMCID: PMC11239404 DOI: 10.4014/jmb.2401.01012] [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: 01/15/2024] [Revised: 04/01/2024] [Accepted: 04/15/2024] [Indexed: 05/18/2024]
Abstract
Antibiotics are used to control infectious diseases. However, adverse effects of antibiotics, such as devastation of the gut microbiota and enhancement of the inflammatory response, have been reported. Health benefits of fermented milk are established and can be enhanced by the addition of probiotic strains. In this study, we evaluated effects of fermented milk containing Lacticaseibacillus rhamnosus (L. rhamnosus) SNUG50430 in a mouse model with antibiotic treatment. Fermented milk containing 2 × 105 colony-forming units of L. rhamnosus SNUG50430 was administered to six week-old female BALB/c mice for 1 week. Interleukin (IL)-10 levels in colon samples were significantly increased (P < 0.05) compared to water-treated mice, whereas interferon-gamma (IFN-γ) and tumor necrosis factor alpha (TNF-α) were decreased, of mice treated with fermented milk containing L. rhamnosus SNUG50430-antibiotics-treated (FM+LR+Abx-treated) mice. Phylum Firmicutes composition in the gut was restored and the relative abundances of several bacteria, including the genera Coprococcus and Lactobacillus, were increased in FM+LR+Abx-treated mice compared to PBS+Abx-treated mice. Interestingly, abundances of genus Coprococcus and Lactobacillus were positively correlated with IL-5 and IL-10 levels (P < 0.05) in colon samples and negative correlated with IFN-γ and TNF-α levels in serum samples (P < 0.001). Acetate and butyrate were increased in mice with fermented milk and fecal microbiota of FM+LR+Abx-treated mice were highly enriched with butyrate metabolism pathway compared to water-treated mice (P < 0.05). Thus, fermented milk containing L. rhamnosus SNUG50430 was shown to ameliorate adverse health effects caused by antibiotics through modulating immune responses and the gut microbiota.
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Affiliation(s)
- Sunghyun Yoon
- Graduate School of Public Health, Seoul National University, Seoul 08826, Republic of Korea
| | - SungJun Park
- N-Bio, Seoul National University, Seoul 08826, Republic of Korea
- KoBioLabs, Inc., Seoul 08826, Republic of Korea
- weBiom Inc., Seoul 08826, Republic of Korea
| | - Seong Eun Jung
- R&BD Center, hy Co., Ltd., Yongin 17086, Republic of Korea
| | - Cheonghoon Lee
- Graduate School of Public Health, Seoul National University, Seoul 08826, Republic of Korea
- Institute of Health and Environment, Seoul National University, Seoul 08826, Republic of Korea
| | - Woon-Ki Kim
- Graduate School of Public Health, Seoul National University, Seoul 08826, Republic of Korea
- Institute of Health and Environment, Seoul National University, Seoul 08826, Republic of Korea
| | - Il-Dong Choi
- R&BD Center, hy Co., Ltd., Yongin 17086, Republic of Korea
| | - GwangPyo Ko
- Graduate School of Public Health, Seoul National University, Seoul 08826, Republic of Korea
- N-Bio, Seoul National University, Seoul 08826, Republic of Korea
- KoBioLabs, Inc., Seoul 08826, Republic of Korea
- Institute of Health and Environment, Seoul National University, Seoul 08826, Republic of Korea
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Shen HT, Fang YT, Tsai WH, Chou CH, Huang MS, Yeh YT, Wu JT, Huang CH, Wang BY, Chang WW. A Lactobacillus Combination Ameliorates Lung Inflammation in an Elastase/LPS-induced Mouse Model of Chronic Obstructive Pulmonary Disease. Probiotics Antimicrob Proteins 2024:10.1007/s12602-024-10300-9. [PMID: 38865030 DOI: 10.1007/s12602-024-10300-9] [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] [Accepted: 05/31/2024] [Indexed: 06/13/2024]
Abstract
Chronic obstructive pulmonary disease (COPD) is the world's leading lung disease and lacks effective and specific clinical strategies. Probiotics are increasingly used to support the improvement of the course of inflammatory diseases. In this study, we evaluated the potential of a lactic acid bacteria (LAB) combination containing Limosilactobacillus reuteri GMNL-89 and Lacticaseibacillus paracasei GMNL-133 to decrease lung inflammation and emphysema in a COPD mouse model. This model was induced by intranasal stimulation with elastase and LPS for 4 weeks, followed by 2 weeks of oral LAB administration. The results showed that the LAB combination decreased lung emphysema and reduced inflammatory cytokines (IL-1β, IL-6, TNF-α) in the lung tissue of COPD mice. Microbiome analysis revealed that Bifidobacterium and Akkermansia muciniphila, reduced in the gut of COPD mice, could be restored after LAB treatment. Microbial α-diversity in the lungs decreased in COPD mice but was reversed after LAB administration, which also increased the relative abundance of Candidatus arthromitus in the gut and decreased Burkholderia in the lungs. Furthermore, LAB-treated COPD mice exhibited increased levels of short-chain fatty acids, specifically acetic acid and propionic acid, in the cecum. Additionally, pulmonary emphysema and inflammation negatively correlated with C. arthromitus and Adlercreutzia levels. In conclusion, the combination of L. reuteri GMNL-89 and L. paracasei GMNL-133 demonstrates beneficial effects on pulmonary emphysema and inflammation in experimental COPD mice, correlating with changes in gut and lung microbiota, and providing a potential strategy for future adjuvant therapy.
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Affiliation(s)
- Huan-Ting Shen
- Department of Pulmonary Medicine, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, No. 88, Sec. 1, Fengxing Rd., Tanzi Dist., Taichung City, 427003, Taiwan
| | - Yi-Ting Fang
- Research and Development Department, GenMont Biotech Incorporation, No.8, Nanke 7th Rd., Shanhua Dist., Tainan City, 741014, Taiwan
| | - Wan-Hua Tsai
- Research and Development Department, GenMont Biotech Incorporation, No.8, Nanke 7th Rd., Shanhua Dist., Tainan City, 741014, Taiwan
| | - Chia-Hsuan Chou
- Research and Development Department, GenMont Biotech Incorporation, No.8, Nanke 7th Rd., Shanhua Dist., Tainan City, 741014, Taiwan
| | - Ming-Shyan Huang
- Division of Respiratory and Chest Medicine, Department of Internal Medicine, E-Da Cancer Hospital, No. 1, Yida Rd, Yanchao Dist, Kaohsiung City, 824005, Taiwan
| | - Yao-Tsung Yeh
- Aging and Disease Prevention Research Center, Fooyin University, No. 151, Jinxue Rd., Daliao Dist., Kaohsiung City, 831301, Taiwan
| | - Jiun-Ting Wu
- Division of Respiratory and Chest Medicine, Department of Internal Medicine, E-Da Cancer Hospital, No. 1, Yida Rd, Yanchao Dist, Kaohsiung City, 824005, Taiwan
| | - Cheng-Hsieh Huang
- Aging and Disease Prevention Research Center, Fooyin University, No. 151, Jinxue Rd., Daliao Dist., Kaohsiung City, 831301, Taiwan
| | - Bing-Yen Wang
- Division of Thoracic Surgery, Department of Surgery, Changhua Christian Hospital, No. 135, Nanhsiao Street, Changhua County, 500209, Taiwan.
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, No. 145, Xingda Rd., South Dist., Taichung City, 402202, Taiwan.
| | - Wen-Wei Chang
- Department of Biomedical Sciences, Chung Shan Medical University, No.110, Sec.1, Jianguo N.Rd, Taichung City, 402306, Taiwan.
- Department of Medical Research, Chung Shan Medical University Hospital, No.110, Sec.1, Jianguo N.Rd, Taichung City, 402306, Taiwan.
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Chandrasekaran P, Weiskirchen S, Weiskirchen R. Effects of Probiotics on Gut Microbiota: An Overview. Int J Mol Sci 2024; 25:6022. [PMID: 38892208 PMCID: PMC11172883 DOI: 10.3390/ijms25116022] [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: 05/09/2024] [Revised: 05/24/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
The role of probiotics in regulating intestinal flora to enhance host immunity has recently received widespread attention. Altering the human gut microbiota may increase the predisposition to several disease phenotypes such as gut inflammation and metabolic disorders. The intestinal microbiota converts dietary nutrients into metabolites that serve as biologically active molecules in modulating regulatory functions in the host. Probiotics, which are active microorganisms, play a versatile role in restoring the composition of the gut microbiota, helping to improve host immunity and prevent intestinal disease phenotypes. This comprehensive review provides firsthand information on the gut microbiota and their influence on human health, the dietary effects of diet on the gut microbiota, and how probiotics alter the composition and function of the human gut microbiota, along with their corresponding effects on host immunity in building a healthy intestine. We also discuss the implications of probiotics in some of the most important human diseases. In summary, probiotics play a significant role in regulating the gut microbiota, boosting overall immunity, increasing the abundance of beneficial bacteria, and helping ameliorate the symptoms of multiple diseases.
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Affiliation(s)
- Preethi Chandrasekaran
- UT Southwestern Medical Center Dallas, 5323 Harry Hines Blvd. ND10.504, Dallas, TX 75390-9014, USA
| | - Sabine Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), Rheinisch-Westfälische Technische Hochschule (RWTH) University Hospital Aachen, D-52074 Aachen, Germany;
| | - Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), Rheinisch-Westfälische Technische Hochschule (RWTH) University Hospital Aachen, D-52074 Aachen, Germany;
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Sá AK, Olímpio F, Vasconcelos J, Rosa P, Faria Neto HC, Rocha C, Camacho MF, Barcick U, Zelanis A, Aimbire F. Involvement of GPR43 Receptor in Effect of Lacticaseibacillus rhamnosus on Murine Steroid Resistant Chronic Obstructive Pulmonary Disease: Relevance to Pro-Inflammatory Mediators and Oxidative Stress in Human Macrophages. Nutrients 2024; 16:1509. [PMID: 38794746 PMCID: PMC11124176 DOI: 10.3390/nu16101509] [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: 04/16/2024] [Revised: 05/10/2024] [Accepted: 05/11/2024] [Indexed: 05/26/2024] Open
Abstract
BACKGROUND Cytokine storm and oxidative stress are present in chronic obstructive pulmonary disease (COPD). Individuals with COPD present high levels of NF-κB-associated cytokines and pro-oxidant agents as well as low levels of Nrf2-associated antioxidants. This condition creates a steroid-resistant inflammatory microenvironment. Lacticaseibacillus rhamnosus (Lr) is a known anti-cytokine in lung diseases; however, the effect of Lr on lung inflammation and oxidative stress in steroid-resistant COPD mice remains unknown. OBJECTIVE Thus, we investigated the Lr effect on lung inflammation and oxidative stress in mice and macrophages exposed to cigarette smoke extract (CSE) and unresponsive to steroids. METHODS Mice and macrophages received dexamethasone or GLPG-094 (a GPR43 inhibitor), and only the macrophages received butyrate (but), all treatments being given before CSE. Lung inflammation was evaluated from the leukocyte population, airway remodeling, cytokines, and NF-κB. Oxidative stress disturbance was measured from ROS, 8-isoprostane, NADPH oxidase, TBARS, SOD, catalase, HO-1, and Nrf2. RESULTS Lr attenuated cellularity, mucus, collagen, cytokines, ROS, 8-isoprostane, NADPH oxidase, and TBARS. Otherwise, SOD, catalase, HO-1, and Nrf2 were upregulated in Lr-treated COPD mice. Anti-cytokine and antioxidant effects of butyrate also occurred in CSE-exposed macrophages. GLPG-094 rendered Lr and butyrate less effective. CONCLUSIONS Lr attenuates lung inflammation and oxidative stress in COPD mice, suggesting the presence of a GPR43 receptor-dependent mechanism also found in macrophages.
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Affiliation(s)
- Ana Karolina Sá
- Department of Medicine, Postgraduate Program in Translational Medicine, Federal University of São Paulo (UNIFESP), Rua Pedro De Toledo 720–2 Andar, Vila Clementino, São Paulo 04039-002, Brazil; (A.K.S.); (F.O.); (J.V.); (P.R.)
- Laboratory of Immunopharmacology, Institute of Science and Technology, Federal University of São Paulo, Rua Talim, 330, Vila Nair, São José dos Campos 12231-280, Brazil
| | - Fabiana Olímpio
- Department of Medicine, Postgraduate Program in Translational Medicine, Federal University of São Paulo (UNIFESP), Rua Pedro De Toledo 720–2 Andar, Vila Clementino, São Paulo 04039-002, Brazil; (A.K.S.); (F.O.); (J.V.); (P.R.)
- Laboratory of Immunopharmacology, Institute of Science and Technology, Federal University of São Paulo, Rua Talim, 330, Vila Nair, São José dos Campos 12231-280, Brazil
| | - Jessica Vasconcelos
- Department of Medicine, Postgraduate Program in Translational Medicine, Federal University of São Paulo (UNIFESP), Rua Pedro De Toledo 720–2 Andar, Vila Clementino, São Paulo 04039-002, Brazil; (A.K.S.); (F.O.); (J.V.); (P.R.)
- Laboratory of Immunopharmacology, Institute of Science and Technology, Federal University of São Paulo, Rua Talim, 330, Vila Nair, São José dos Campos 12231-280, Brazil
| | - Paloma Rosa
- Department of Medicine, Postgraduate Program in Translational Medicine, Federal University of São Paulo (UNIFESP), Rua Pedro De Toledo 720–2 Andar, Vila Clementino, São Paulo 04039-002, Brazil; (A.K.S.); (F.O.); (J.V.); (P.R.)
- Laboratory of Immunopharmacology, Institute of Science and Technology, Federal University of São Paulo, Rua Talim, 330, Vila Nair, São José dos Campos 12231-280, Brazil
| | - Hugo Caire Faria Neto
- Laboratory of Immunopharmacology, Oswaldo Cruz Foundation Fundação Oswaldo Cruz, Av. Brazil, Rio de Janeiro 4036, Brazil;
| | - Carlos Rocha
- Medical School, Group of Phytocomplexes and Cell Signaling, Anhembi Morumbi University, São José dos Campos 04039-002, Brazil;
| | - Maurício Frota Camacho
- Functional Proteomics Laboratory, Institute of Science and Technology, Federal University of São Paulo, São José dos Campos 12231-280, Brazil; (M.F.C.); (U.B.); (A.Z.)
| | - Uilla Barcick
- Functional Proteomics Laboratory, Institute of Science and Technology, Federal University of São Paulo, São José dos Campos 12231-280, Brazil; (M.F.C.); (U.B.); (A.Z.)
| | - Andre Zelanis
- Functional Proteomics Laboratory, Institute of Science and Technology, Federal University of São Paulo, São José dos Campos 12231-280, Brazil; (M.F.C.); (U.B.); (A.Z.)
| | - Flavio Aimbire
- Department of Medicine, Postgraduate Program in Translational Medicine, Federal University of São Paulo (UNIFESP), Rua Pedro De Toledo 720–2 Andar, Vila Clementino, São Paulo 04039-002, Brazil; (A.K.S.); (F.O.); (J.V.); (P.R.)
- Laboratory of Immunopharmacology, Institute of Science and Technology, Federal University of São Paulo, Rua Talim, 330, Vila Nair, São José dos Campos 12231-280, Brazil
- Postgraduate Program in Pharmaceutical Sciences, Evangelical University of Goiás (UniEvangélica), Avenida Universitária Km 3,5, Anápolis 75083-515, Brazil
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Ma Y, Chen H, Li H, Zheng M, Zuo X, Wang W, Wang S, Lu Y, Wang J, Li Y, Wang J, Qiu M. Intratumor microbiome-derived butyrate promotes lung cancer metastasis. Cell Rep Med 2024; 5:101488. [PMID: 38565146 PMCID: PMC11031379 DOI: 10.1016/j.xcrm.2024.101488] [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: 05/18/2022] [Revised: 12/01/2023] [Accepted: 03/05/2024] [Indexed: 04/04/2024]
Abstract
Most recurrences of lung cancer (LC) occur within 3 years after surgery, but the underlying mechanism remains unclear. Here, we collect LC tissues with shorter (<3 years, recurrence group) and longer (>3 years, non-recurrence group) recurrence-free survival. By using 16S sequencing, we find that intratumor microbiome diversity is lower in the recurrence group and butyrate-producing bacteria are enriched in the recurrence group. The intratumor microbiome signature and circulating microbiome DNA can accurately predict LC recurrence. We prove that intratumor injection of butyrate-producing bacteria Roseburia can promote subcutaneous tumor growth. Mechanistically, bacteria-derived butyrate promotes LC metastasis by increasing expression of H19 in tumor cells through inhibiting HDAC2 and increasing H3K27 acetylation at the H19 promoter and inducing M2 macrophage polarization. Depletion of macrophages partially abolishes the metastasis-promoting effect of butyrate. Our results provide evidence for the cross-talk between the intratumor microbiome and LC metastasis and suggest the potential prognostic and therapeutic value of the intratumor microbiome.
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Affiliation(s)
- Yi Ma
- Department of Thoracic Surgery, Thoracic Oncology Institute, Peking University People's Hospital, Beijing 100044, China; Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Shanghai 200433, China
| | - Haiming Chen
- Department of Thoracic Surgery, Thoracic Oncology Institute, Peking University People's Hospital, Beijing 100044, China; Institute of Advanced Clinical Medicine, Peking University, Beijing 100191, China
| | - Haoran Li
- Department of Thoracic Surgery, Thoracic Oncology Institute, Peking University People's Hospital, Beijing 100044, China; Institute of Advanced Clinical Medicine, Peking University, Beijing 100191, China
| | - Meiling Zheng
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100010, China; Department of Chinese Medicine, Peking University People's Hospital, Beijing 100044, China
| | - Xianglin Zuo
- Department of Science & Technology, Biobank of Jiangsu Cancer Hospital, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, China
| | - Wenxiang Wang
- Department of Thoracic Surgery, Thoracic Oncology Institute, Peking University People's Hospital, Beijing 100044, China; Institute of Advanced Clinical Medicine, Peking University, Beijing 100191, China
| | - Shaodong Wang
- Department of Thoracic Surgery, Thoracic Oncology Institute, Peking University People's Hospital, Beijing 100044, China; Institute of Advanced Clinical Medicine, Peking University, Beijing 100191, China
| | - Yiming Lu
- Department of Genetics & Integrative Omics, State Key Laboratory of Proteomics, National Center for Protein Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Jun Wang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yun Li
- Department of Thoracic Surgery, Thoracic Oncology Institute, Peking University People's Hospital, Beijing 100044, China; Institute of Advanced Clinical Medicine, Peking University, Beijing 100191, China.
| | - Jie Wang
- Department of Science & Technology, Biobank of Jiangsu Cancer Hospital, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, China.
| | - Mantang Qiu
- Department of Thoracic Surgery, Thoracic Oncology Institute, Peking University People's Hospital, Beijing 100044, China; Institute of Advanced Clinical Medicine, Peking University, Beijing 100191, China.
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Fang C, Zuo K, Liu Z, Xu L, Yang X. Disordered GPR43/NLRP3 expression in peripheral leukocytes of patients with atrial fibrillation is associated with intestinal short chain fatty acids levels. Eur J Med Res 2024; 29:233. [PMID: 38622672 PMCID: PMC11017637 DOI: 10.1186/s40001-024-01825-4] [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: 01/24/2024] [Accepted: 03/31/2024] [Indexed: 04/17/2024] Open
Abstract
BACKGROUND Atrial fibrillation (AF) is associated with circulating inflammation. Short-chain fatty acids (SCFAs) derived from gut microbiota (GM) regulate leukocyte function and inhibit the release of inflammatory cytokines, which are partly mediated by the G-protein-coupled receptor 43 (GPR43) signaling. This study aimed to investigate the expression of GPR43/NOD-like receptors family pyrin domain containing 3 (NLRP3) in leukocytes and the interaction with intestinal SCFAs levels in AF patients. METHODS Expressions of GPR43 and NLRP3 mRNA in peripheral blood leukocytes from 23 AF patients and 25 non-AF controls were detected by quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Expressions of leukocyte GPR43 and NLRP3 protein were evaluated by western blot analysis. The levels of plasma IL-1β were measured by enzyme-linked immunosorbent assay (ELISA). The fecal SCFAs levels based on GC/MS metabolome of corresponding 21 controls and 14 AF patients were acquired from our published dataset. To evaluate the expression of NLRP3 and GPR43 and the release of IL-1β, human THP-1 cells were stimulated with or without SCFAs (acetate, propionate, and butyrate), lipopolysaccharide (LPS), and nigericin in vitro, respectively. RESULTS Compared to the controls, the mRNA expression in peripheral leukocytes was significantly reduced in AF patients (P = 0.011) coupled with the increase in downstream leukocyte NLRP3 mRNA expression (P = 0.007) and plasma IL-1β levels (P < 0.001), consistent with changes in GPR43 and NLRP3 protein expression. Furthermore, leukocyte GPR43 mRNA levels were positively correlated with fecal GM-derived acetic acid (P = 0.046) and negatively correlated with NLRP3 mRNA expression (P = 0.024). In contrast to the negative correlation between left atrial diameter (LAD) and GPR43 (P = 0.008), LAD was positively correlated with the leukocyte NLRP3 mRNA levels (P = 0.024). Subsequent mediation analysis showed that 68.88% of the total effect of intestinal acetic acid on AF might be mediated by leukocyte GPR43/NLRP3. The constructed GPR43-NLRP3 score might have a predictive potential for AF detection (AUC = 0.81, P < 0.001). Moreover, SCFAs treatment increased GPR43 expression and remarkably reduced LPS/nigericin-induced NLRP3 expression and IL-1β release in human THP-1 cells in vitro. CONCLUSIONS Disrupted interactions between GPR43 and NLRP3 expression in peripheral blood leukocytes, associated with reduced intestinal GM-derived SCFAs, especially acetic acid, may be involved in AF development and left atrial enlargement by enhancing circulating inflammation.
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Affiliation(s)
- Chen Fang
- Department of Cardiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing University, No. 321 Zhongshan Road, Nanjing, 210008, China
| | - Kun Zuo
- Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Heart Center, Capital Medical University, 8th Gongtinanlu Rd, Chaoyang District, Beijing, 100020, China
| | - Zheng Liu
- Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Heart Center, Capital Medical University, 8th Gongtinanlu Rd, Chaoyang District, Beijing, 100020, China.
| | - Li Xu
- Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Heart Center, Capital Medical University, 8th Gongtinanlu Rd, Chaoyang District, Beijing, 100020, China.
| | - Xinchun Yang
- Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Heart Center, Capital Medical University, 8th Gongtinanlu Rd, Chaoyang District, Beijing, 100020, China.
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Lipinksi JH, Ranjan P, Dickson RP, O’Dwyer DN. The Lung Microbiome. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:1269-1275. [PMID: 38560811 PMCID: PMC11073614 DOI: 10.4049/jimmunol.2300716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/01/2024] [Indexed: 04/04/2024]
Abstract
Although the lungs were once considered a sterile environment, advances in sequencing technology have revealed dynamic, low-biomass communities in the respiratory tract, even in health. Key features of these communities-composition, diversity, and burden-are consistently altered in lung disease, associate with host physiology and immunity, and can predict clinical outcomes. Although initial studies of the lung microbiome were descriptive, recent studies have leveraged advances in technology to identify metabolically active microbes and potential associations with their immunomodulatory by-products and lung disease. In this brief review, we discuss novel insights in airway disease and parenchymal lung disease, exploring host-microbiome interactions in disease pathogenesis. We also discuss complex interactions between gut and oropharyngeal microbiota and lung immunobiology. Our advancing knowledge of the lung microbiome will provide disease targets in acute and chronic lung disease and may facilitate the development of new therapeutic strategies.
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Affiliation(s)
- Jay H. Lipinksi
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Piyush Ranjan
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Dept. of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Robert P. Dickson
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Dept. of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
- Weil Institute for Critical Care Research and Innovation, Ann Arbor, MI, USA
| | - David N. O’Dwyer
- Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
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12
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Thome CD, Tausche P, Hohenberger K, Yang Z, Krammer S, Trufa DI, Sirbu H, Schmidt J, Finotto S. Short-chain fatty acids induced lung tumor cell death and increased peripheral blood CD4+ T cells in NSCLC and control patients ex vivo. Front Immunol 2024; 15:1328263. [PMID: 38650948 PMCID: PMC11033355 DOI: 10.3389/fimmu.2024.1328263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 03/14/2024] [Indexed: 04/25/2024] Open
Abstract
Background Despite therapy advances, one of the leading causes of cancer deaths still remains lung cancer. To improve current treatments or prevent non-small cell lung cancer (NSCLC), the role of the nutrition in cancer onset and progression needs to be understood in more detail. While in colorectal cancer, the influence of local microbiota derived SCFAs have been well investigated, the influence of SCFA on lung cancer cells via peripheral blood immune system should be investigated more deeply. In this respect, nutrients absorbed via the gut might affect the tumor microenvironment (TME) and thus play an important role in tumor cell growth. Objective This study focuses on the impact of the short-chain fatty acid (SCFA) Sodium Butyrate (SB), on lung cancer cell survival. We previously described a pro-tumoral role of glucose on A549 lung adenocarcinoma cell line. In this study, we wanted to know if SB would counteract the effect of glucose and thus cultured A549 and H520 in vitro with and without SB in the presence or absence of glucose and investigated how the treatment with SB affects the survival of lung cancer cells and its influence on immune cells fighting against lung cancer. Methods In this study, we performed cell culture experiments with A549, H520 and NSCLC-patient-derived epithelial cells under different SB levels. To investigate the influence on the immune system, we performed in vitro culture of peripheral mononuclear blood cells (PBMC) from control, smoker and lung cancer patients with increasing SB concentrations. Results To investigate the effect of SB on lung tumor cells, we first analyzed the effect of 6 different concentrations of SB on A549 cells at 48 and 72 hours cell culture. Here we found that, SB treatment reduced lung cancer cell survival in a concentration dependent manner. We next focused our deeper analysis on the two concentrations, which caused the maximal reduction in cell survival. Here, we observed that SB led to cell cycle arrest and induced early apoptosis in A549 lung cancer cells. The expression of cell cycle regulatory proteins and A549 lung cancer stem cell markers (CD90) was induced. Additionally, this study explored the role of interferon-gamma (IFN-γ) and its receptor (IFN-γ-R1) in combination with SB treatment, revealing that, although IFN-γ-R1 expression was increased, IFN-γ did not affect the efficacy of SB in reducing tumor cell viability. Furthermore, we examined the effects of SB on immune cells, specifically CD8+ T cells and natural killer (NK) cells from healthy individuals, smokers, and NSCLC patients. SB treatment resulted in a decreased production of IFN-γ and granzyme B in CD8+ T cells and NK cells. Moreover, SB induced IFN-γ-R1 in NK cells and CD4+ T cells in the absence of glucose both in PBMCs from controls and NSCLC subjects. Conclusion Overall, this study highlights the potential of SB in inhibiting lung cancer cell growth, triggering apoptosis, inducing cell cycle arrest, and modulating immune responses by activating peripheral blood CD4+ T cells while selectively inducing IFN-γ-R1 in NK cells in peripheral blood and inhibiting peripheral blood CD8+ T cells and NK cells. Thus, understanding the mechanisms of action of SB in the TME and its influence on the immune system provide valuable insights of potentially considering SB as a candidate for adjunctive therapies in NSCLC.
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Affiliation(s)
- Carolin D. Thome
- Department of Molecular Pneumology, University Medical School Hospital Erlangen (UKER) Friedrich-Alexander-University (FAU), Erlangen-Nürnberg, Germany
| | - Patrick Tausche
- Department of Molecular Pneumology, University Medical School Hospital Erlangen (UKER) Friedrich-Alexander-University (FAU), Erlangen-Nürnberg, Germany
| | - Katja Hohenberger
- Department of Molecular Pneumology, University Medical School Hospital Erlangen (UKER) Friedrich-Alexander-University (FAU), Erlangen-Nürnberg, Germany
| | - Zuqin Yang
- Department of Molecular Pneumology, University Medical School Hospital Erlangen (UKER) Friedrich-Alexander-University (FAU), Erlangen-Nürnberg, Germany
| | - Susanne Krammer
- Department of Molecular Pneumology, University Medical School Hospital Erlangen (UKER) Friedrich-Alexander-University (FAU), Erlangen-Nürnberg, Germany
| | - Denis I. Trufa
- Department of Thoracic Surgery, University Medical School Hospital Erlangen (UKER), Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
- Bavarian Cancer Research Center (BZKF), Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), Erlangen, Germany
| | - Horia Sirbu
- Department of Thoracic Surgery, University Medical School Hospital Erlangen (UKER), Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
- Bavarian Cancer Research Center (BZKF), Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), Erlangen, Germany
| | - Joachim Schmidt
- Department of Anesthesiology, University Medical School Hospital Erlangen (UKER), Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Susetta Finotto
- Department of Molecular Pneumology, University Medical School Hospital Erlangen (UKER) Friedrich-Alexander-University (FAU), Erlangen-Nürnberg, Germany
- Bavarian Cancer Research Center (BZKF), Erlangen, Germany
- Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), Erlangen, Germany
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13
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Mann ER, Lam YK, Uhlig HH. Short-chain fatty acids: linking diet, the microbiome and immunity. Nat Rev Immunol 2024:10.1038/s41577-024-01014-8. [PMID: 38565643 DOI: 10.1038/s41577-024-01014-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2024] [Indexed: 04/04/2024]
Abstract
The short-chain fatty acids (SCFAs) butyrate, propionate and acetate are microbial metabolites and their availability in the gut and other organs is determined by environmental factors, such as diet and use of antibiotics, that shape the diversity and metabolism of the microbiota. SCFAs regulate epithelial barrier function as well as mucosal and systemic immunity via evolutionary conserved processes that involve G protein-coupled receptor signalling or histone deacetylase activity. Indicatively, the anti-inflammatory role of butyrate is mediated through direct effects on the differentiation of intestinal epithelial cells, phagocytes, B cells and plasma cells, and regulatory and effector T cells. Intestinally derived SCFAs also directly and indirectly affect immunity at extra-intestinal sites, such as the liver, the lungs, the reproductive tract and the brain, and have been implicated in a range of disorders, including infections, intestinal inflammation, autoimmunity, food allergies, asthma and responses to cancer therapies. An ecological understanding of microbial communities and their interrelated metabolic states, as well as the engineering of butyrogenic bacteria may support SCFA-focused interventions for the prevention and treatment of immune-mediated diseases.
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Affiliation(s)
- Elizabeth R Mann
- Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Ying Ka Lam
- Translational Gastroenterology Unit, University of Oxford, Oxford, UK
| | - Holm H Uhlig
- Translational Gastroenterology Unit, University of Oxford, Oxford, UK.
- Department of Paediatrics, University of Oxford, Oxford, UK.
- Oxford Biomedical Research Centre, University of Oxford, Oxford, UK.
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Guo HH, Han YX, Rong XJ, Shen Z, Shen HR, Kong LF, Guo YD, Li JZ, Xu B, Gao TL, Wang LL, Tie C, Jiang JD. Alleviation of allergic asthma by rosmarinic acid via gut-lung axis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 126:155470. [PMID: 38417242 DOI: 10.1016/j.phymed.2024.155470] [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: 09/06/2023] [Revised: 02/15/2024] [Accepted: 02/19/2024] [Indexed: 03/01/2024]
Abstract
BACKGROUND Asthma affects 3% of the global population, leading to over 0.25 million deaths. Due to its complexity, asthma is difficult to cure or prevent, and current therapies have limitations. This has led to a growing demand for alternative asthma treatments. We found rosmarinic acid (RosA) as a potential new drug candidate from natural medicine. However, RosA has poor bioavailability and remains mainly in the gastrointestinal tract after oral administration, suggesting the involvement of gut microbiota in its bioactivity. PURPOSE To investigate the mechanism of RosA in alleviating allergic asthma by gut-lung axis. METHODS We used 16S rRNA gene sequencing and metabolites analysis to investigate RosA's modulation of gut microbiota. Techniques of molecular biology and metabolomics were employed to study the pharmacological mechanism of RosA. Cohousing was used to confirm the involvement of gut microbiota in RosA-induced improvement of allergic asthma. RESULTS RosA decreased cholate levels from spore-forming bacteria, leading to reduced 5-hydroxytryptamine (5-HT) synthesis, bronchoconstriction, vasodilation, and inflammatory cell infiltration. It also increased short-chain fatty acids (SCFAs) levels, facilitating the expression of intestinal tight junction proteins to promote intestinal integrity. SCFAs upregulated intestinal monocarboxylate transporters (MCTs), thereby improving their systemic delivery to reduce Th2/ILC2 mediated inflammatory response and suppress eosinophil influx and mucus production in lung. Additionally, RosA inhibited lipopolysaccharide (LPS) production and translocation, leading to reduced TLR4-NFκB mediated pulmonary inflammation and oxidative stress. CONCLUSIONS The anti-asthmatic mechanism of oral RosA is primarily driven by modulation of gut microbiota-derived 5-HT, SCFAs, and LPS, achieving a combined synergistic effect. RosA is a safe, effective, and reliable drug candidate that could potentially replace glucocorticoids for asthma treatment.
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Affiliation(s)
- Hui-Hui Guo
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
| | - Yan-Xing Han
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
| | | | - Zhen Shen
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
| | - Hao-Ran Shen
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
| | - Ling-Fei Kong
- State key laboratory Coal resources and Safe Mining, Beijing, PR China; School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, PR China
| | - Yun-Dan Guo
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China
| | | | - Bo Xu
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Tian-Le Gao
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China.
| | - Lu-Lu Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science, Beijing, PR China.
| | - Cai Tie
- State key laboratory Coal resources and Safe Mining, Beijing, PR China; School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, PR China.
| | - Jian-Dong Jiang
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China; Institute of Medicinal Biotechnology, Chinese Academy of Medical Science, Beijing, PR China
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15
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Zhou W, Zhang J, Chen W, Miao C. Prospects of molecular hydrogen in cancer prevention and treatment. J Cancer Res Clin Oncol 2024; 150:170. [PMID: 38555538 PMCID: PMC10982102 DOI: 10.1007/s00432-024-05685-7] [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: 01/12/2024] [Accepted: 03/04/2024] [Indexed: 04/02/2024]
Abstract
Gas signaling molecules, including carbon monoxide (CO), nitric oxide (NO), and hydrogen sulfide (H2S), have been shown to have cancer therapeutic potential, pointing to a new direction for cancer treatment. In recent years, a series of studies have confirmed that hydrogen (H2), a weakly reductive gas, also has therapeutic effects on various cancers and can mitigate oxidative stress caused by radiation and chemotherapy, reducing tissue damage and immunosuppression to improve prognosis. Meanwhile, H2 also has immunomodulatory effects, inhibiting T cell exhaustion and enhancing T cell anti-tumor function. It is worth noting that human intestinal flora can produce large amounts of H2 daily, which becomes a natural barrier to maintaining the body's resistance to diseases such as tumors. Although the potential anti-tumor mechanisms of H2 are still to be investigated, previous studies have shown that H2 can selectively scavenge highly toxic reactive oxygen species (ROS) and inhibit various ROS-dependent signaling pathways in cancer cells, thus inhibiting cancer cell proliferation and metastasis. The ROS scavenging ability of H2 may also be the underlying mechanism of its immunomodulatory function. In this paper, we review the significance of H2 produced by intestinal flora on the immune homeostasis of the body, the role of H2 in cancer therapy and the underlying mechanisms, and the specific application of H2 to provide new ideas for the comprehensive treatment of cancer patients.
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Affiliation(s)
- Wenchang Zhou
- Department of Anesthesiology; Cancer Center, Zhongshan Hospital, Fudan University, No. 180 Feng-Lin Road, Shanghai, 200032, China
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China
| | - Jie Zhang
- Department of Anesthesiology; Cancer Center, Zhongshan Hospital, Fudan University, No. 180 Feng-Lin Road, Shanghai, 200032, China
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China
| | - Wankun Chen
- Department of Anesthesiology; Cancer Center, Zhongshan Hospital, Fudan University, No. 180 Feng-Lin Road, Shanghai, 200032, China.
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China.
| | - Changhong Miao
- Department of Anesthesiology; Cancer Center, Zhongshan Hospital, Fudan University, No. 180 Feng-Lin Road, Shanghai, 200032, China.
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China.
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16
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Agbalalah T, Bur D, Nwonu EJ, Rowaiye AB. Gut Microbiota: Potential Therapeutic Target for Sickle Cell Disease Pain and Complications. Anemia 2024; 2024:5431000. [PMID: 38533265 PMCID: PMC10965282 DOI: 10.1155/2024/5431000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/26/2024] [Accepted: 03/04/2024] [Indexed: 03/28/2024] Open
Abstract
Aim Sickle cell disease has witnessed a 41.4% surge from 2000 to 2021, significantly affecting morbidity and mortality rates, particularly in children from regions with elevated under-5 mortality rates. Gut microbiota dysbiosis is increasingly recognised in SCD, exacerbating complications, particularly chronic pain, marked by significant alterations of proinflammatory bacteria abundance. This review explores the therapeutic potential of Akkermansia muciniphila and Roseburia spp. in alleviating SCD-related complications, emphasising their roles in maintaining gut barrier integrity, reducing inflammation, and modulating immune responses. Method A literature search up to November 2023 using PubMed, MEDLINE, and Google Scholar databases explored SCD pathophysiology, gut microbiota composition, Akkermansia muciniphila and Roseburia spp. abundance, pain and gut dysbiosis in SCD, and butyrate therapy. Result A. muciniphila and Roseburia spp. supplementation shows promise in alleviating chronic pain by addressing gut dysbiosis, offering new avenues for sustainable SCD management. This approach holds the potential for reducing reliance on reactive treatments and improving overall quality of life. This research underscores the pivotal role of the gut microbiome in SCD, advocating for personalised treatment approaches. Conclusion Further exploration and clinical trials are needed to harness the full potential of these gut bacteria for individuals affected by this challenging condition.
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Affiliation(s)
- Tarimoboere Agbalalah
- Department of Anatomy, Faculty of Basic Medical Sciences, Baze University, Abuja, Nigeria
- Department of Medical Biotechnology, National Biotechnology Development Agency, Abuja, Nigeria
| | - Doofan Bur
- Department of Medical Biotechnology, National Biotechnology Development Agency, Abuja, Nigeria
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17
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Yuan X, Tan Y, Bajinka O, Jammeh ML, Dukureh A, Obiegbusi CN, Abdelhalim KA, Mohanad M. The connection between epigenetics and gut microbiota-current perspective. Cell Biochem Funct 2024; 42:e3941. [PMID: 38379252 DOI: 10.1002/cbf.3941] [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: 11/23/2023] [Revised: 12/26/2023] [Accepted: 01/12/2024] [Indexed: 02/22/2024]
Abstract
Both the epigenetic changes and gut microbiota (GM) have attracted a growing interest in establishing effective diagnostics and potential therapeutic strategies for a number of diseases. These disorders include metabolic, central nervous system-related diseases, autoimmune, and gastrointestinal infections (GI). Despite the number of studies, there is no extensive review that connects the epigenetics modifications and GM as biomarkers that could confer effective diagnostics and confer treatment options. To this end, this review hopes to give detailed information on connecting the modifications in epigenetic and GM. An updated and detailed information on the connection between the epigenetics factors and GM that influence diseases are given. In addition, the review showed some associations between the epigenetics to the maternal GM and offspring health. Finally, the limitations of the concept and prospects into this new emerging discipline were also looked into. Although this review elucidated on the maternal diet and response to offspring health with respect to GM and epigenetic modifications, there still exist various limitations to this newly emerging discipline. In addition to integrating complementary multi-omics data, longitudinal sampling will aid with the identification of functional mechanisms that may serve as therapeutic targets. To this end, this review gave a detailed perspective into harnessing disease diagnostics, prevention and treatment options through epigenetics and GM.
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Affiliation(s)
- Xingxing Yuan
- Department of Gastroenterology, Heilongjiang Academy of Traditional Chinese Medicine, Harbin, China
- Department of First Clinical Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Yurong Tan
- Department of Medical Microbiology, Central South University Changsha, Changsha, China
- Department of Medical Science, School of Medicine and Allied Health Sciences, University of The Gambia, Banjul, The Gambia
| | - Ousman Bajinka
- Department of Medical Microbiology, Central South University Changsha, Changsha, China
- Department of Medical Science, School of Medicine and Allied Health Sciences, University of The Gambia, Banjul, The Gambia
| | - Modou L Jammeh
- Department of Medical Science, School of Medicine and Allied Health Sciences, University of The Gambia, Banjul, The Gambia
| | - Abubakarr Dukureh
- Department of Medical Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chidera N Obiegbusi
- Department of Medical Science, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Khalid A Abdelhalim
- Industrial Research and Development, Izmir Biomedicine and Genome Center, Izmir, Turkiye
| | - Mahmoud Mohanad
- Department of Medical Microbiology, Central South University Changsha, Changsha, China
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18
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Kelly A, Lavender P. Epigenetic Approaches to Identifying Asthma Endotypes. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2024; 16:130-141. [PMID: 38528381 DOI: 10.4168/aair.2024.16.2.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 02/03/2024] [Accepted: 02/13/2024] [Indexed: 03/27/2024]
Abstract
The prevalence of asthma escalated rapidly in the late 20th century. In 2019, the World Health Organization estimated the global number of people affected by the condition to be approximately 260 million, causing 450,000 deaths during that year. While there have been advances in therapeutics with the emergence of biologics targeting T2-high asthma, there is still little clarity on the mechanisms underlying the origins of both the condition and all of its endotypes. Several biomarkers for particular asthma phenotypes have been documented. These are generally identified from transcriptomics and proteomics protocols and tend to be biased to T2-high phenotypes. In this review, we summarize some suggestions that analysis of epigenomes may provide alternative datasets that inform of broader asthma endotypes and might highlight pathways amenable for therapeutic intervention.
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Affiliation(s)
- Audrey Kelly
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Science, King's College London, London, United Kingdom
| | - Paul Lavender
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Science, King's College London, London, United Kingdom.
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19
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Rana AK, Kumar Saraswati SS, Anang V, Singh A, Singh A, Verma C, Natarajan K. Butyrate induces oxidative burst mediated apoptosis via Glucose-6-Phosphate Dehydrogenase (G6PDH) in macrophages during mycobacterial infection. Microbes Infect 2024; 26:105271. [PMID: 38036036 DOI: 10.1016/j.micinf.2023.105271] [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: 07/04/2023] [Revised: 11/22/2023] [Accepted: 11/27/2023] [Indexed: 12/02/2023]
Abstract
Microorganisms present in the gut modulate host defence responses against infections in order to maintain immune homeostasis. This host-microbe crosstalk is regulated by gut metabolites. Butyrate is one such small chain fatty acid produced by gut microbes upon fermentation that has the potential to influence immune responses. Here we investigated the role of butyrate in macrophages during mycobacterial infection. Results demonstrate that butyrate significantly suppresses the growth kinetics of mycobacteria in culture medium as well as inhibits mycobacterial survival inside macrophages. Interestingly, butyrate alters the pentose phosphate pathway by inducing higher expression of Glucose-6-Phosphate Dehydrogenase (G6PDH) resulting in a higher oxidative burst via decreased Sod-2 and increased Nox-2 (NADPH oxidase-2) expression. Butyrate-induced G6PDH also mediated a decrease in mitochondrial membrane potential. This in turn lead to an induction of apoptosis as measured by lower expression of the anti-apoptotic protein Bcl-2 and a higher release of Cytochrome C as a result of induction of apoptosis. These results indicate that butyrate alters the metabolic status of macrophages and induces protective immune responses against mycobacterial infection.
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Affiliation(s)
- Ankush Kumar Rana
- Infectious Disease Immunology Lab, Dr. B.R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi 110007, India.
| | | | - Vandana Anang
- Infectious Disease Immunology Lab, Dr. B.R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi 110007, India
| | - Aayushi Singh
- Infectious Disease Immunology Lab, Dr. B.R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi 110007, India
| | - Aarti Singh
- Infectious Disease Immunology Lab, Dr. B.R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi 110007, India
| | - Chaitenya Verma
- Infectious Disease Immunology Lab, Dr. B.R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi 110007, India
| | - Krishnamurthy Natarajan
- Infectious Disease Immunology Lab, Dr. B.R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi 110007, India.
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Shen F, Gao C, Wang M, Ding X, Zhao H, Zhou M, Mao J, Kuai L, Li B, Wang D, Zhang H, Ma X. Therapeutic effects of the Qingre-Qushi recipe on atopic dermatitis through the regulation of gut microbiota and skin inflammation. Heliyon 2024; 10:e26063. [PMID: 38380039 PMCID: PMC10877368 DOI: 10.1016/j.heliyon.2024.e26063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 02/22/2024] Open
Abstract
Accumulating evidence has highlighted a strong association between gut microbiota and the occurrence, development, prevention, and treatment of atopic dermatitis (AD). The regulation of gut microbial dysbiosis by oral traditional Chinese medicine (TCM) has garnered significant attention. In the treatment of AD, the TCM formula Qingre-Qushi Recipe (QRQS) has demonstrated clinical efficacy. However, both the therapeutic mechanisms of QRQS and its impact on gut microbiota remain unclear. Thus, our study aimed to assess the efficacy of QRQS and evaluate its influence on the composition and diversity of gut microbiota in AD animal models. First, we investigated the therapeutic effect of QRQS on AD using two animal models: filaggrin-deficient mice (Flaky tail, ft/ft) and MC903-induced AD-like mice. Subsequently, we explored its influence on the composition and diversity of gut microbiota. Our results demonstrated that QRQS treatment ameliorated the symptoms in both ft/ft mice and MC903-induced AD-like mice. It also reduced the levels of serum IgE and pro-inflammatory cytokines, including IL-1β, IL-4, IL-5, IL-9, IL-13, IL-17A, and TNF-α. Furthermore, QRQS remarkably regulated gut microbiota diversity by increasing Lactobacillaceae and decreasing Bacteroidales. The inflammatory factors in peripheral serum of ft/ft mice showed a close correlation with gut microbiota, as determined using the Spearman correlation coefficient. Additionally, PICRUSt analysis revealed an enrichment in ascorbate and aldarate metabolism, fatty acid metabolism and biosynthesis, and propanoate metabolism in the QRQS group compared to the ft/ft group. Finally, we identified liquiritin as the primary active ingredient of QRQS using ultra-high-performance liquid chromatography-high-resolution mass spectrometry (UPLC-HRMS). Our findings revealed that QRQS improved AD-like symptoms and alleviated skin inflammation in ft/ft and MC903-induced mice. This suggests that modulating the gut microbiota may help elucidate its anti-inflammation activation mechanism, highlighting a new therapeutic strategy that targets the intestinal flora to prevent and treat AD.
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Affiliation(s)
- Fang Shen
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China
| | - Chunjie Gao
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China
| | - Mingxia Wang
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China
| | - Xiaojie Ding
- Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Hang Zhao
- Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Mi Zhou
- Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Jingyi Mao
- Department of Dermatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Le Kuai
- Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Bin Li
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China
- Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, 201203, China
- Institute of Dermatology, School of Medicine, Tongji University, Shanghai, 200443, China
| | - Dongming Wang
- Department of Dermatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Huimin Zhang
- Department of Dermatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Xin Ma
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China
- Department of Dermatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
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Kim HS, Kim B, Holzapfel WH, Kang H. Lactiplantibacillusplantarum APsulloc331261 (GTB1 ™) promotes butyrate production to suppress mucin hypersecretion in a murine allergic airway inflammation model. Front Microbiol 2024; 14:1292266. [PMID: 38449878 PMCID: PMC10915089 DOI: 10.3389/fmicb.2023.1292266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 12/15/2023] [Indexed: 03/08/2024] Open
Abstract
Introduction Allergic airway diseases are one of the serious health problems in worldwide and allergic airway inflammation is a prerequisite led to the exacerbated situation such as mucus hypersecretion, epithelial barrier damage and microbiota dysbiosis. Because of side effects and low efficiencies of current therapeutics, the need for novel alternatives has been urged. Probiotics in which have diverse and beneficial modulatory effects have been applied to the airway inflammation model and the underlying mechanism needs to be investigated. Methods We aimed to evaluate whether our target strain, Lactiplantibacillus plantarum APsulloc331261 (GTB1TM) isolated from green tea, can ameliorate allergic airway inflammation in mice and to figure out the mechanism. We induced allergic airway inflammation to mice by ovalbumin (OVA) and administered GTB1 orally and the immune and epithelial barrier markers were assessed. The gut metabolite and microbiota were also analysed, and the in vitro cell-line experiment was introduced to confirm the hypothesis of the study. Results GTB1 ameliorated type 2 inflammation and suppressed mucin hypersecretion with the inhibition of MUC5AC in inflamed mice. Moreover, GTB1 increased the butyrate production and the relative abundance of butyrate producer, Clostridium cluster IV. We assumed that butyrate may have a potential role and investigated the effect of butyrate in mucin regulation via human airway epithelial cell line, A549. Butyrate significantly reduced the gene expression of MUC5AC in A549 cells suggesting its regulatory role in mucus production. Conclusion Therefore, our study demonstrates that the oral administration of GTB1 can ameliorate allergic airway inflammation and mucin hypersecretion by butyrate production.
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Affiliation(s)
- Hye-Shin Kim
- Department of Advanced Convergence, Handong Global University, Pohang, Republic of Korea
- HEM Pharma, Pohang, Republic of Korea
| | - Bobae Kim
- HEM Pharma, Pohang, Republic of Korea
| | - Wilhelm H. Holzapfel
- Department of Advanced Convergence, Handong Global University, Pohang, Republic of Korea
- HEM Pharma, Pohang, Republic of Korea
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22
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Bi R, Hu R, Jiang L, Wen B, Jiang Z, Liu H, Mei J. Butyrate enhances erastin-induced ferroptosis of lung cancer cells via modulating the ATF3/SLC7A11 pathway. ENVIRONMENTAL TOXICOLOGY 2024; 39:529-538. [PMID: 37341073 DOI: 10.1002/tox.23857] [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: 04/17/2023] [Revised: 05/13/2023] [Accepted: 05/28/2023] [Indexed: 06/22/2023]
Abstract
Ferroptosis is a novel form of programmed cell death triggered by iron-dependent lipid peroxidation and has been associated with various diseases, including cancer. Erastin, an inhibitor of system Xc-, which plays a critical role in regulating ferroptosis, has been identified as an inducer of ferroptosis in cancer cells. In this study, we investigated the impact of butyrate, a short-chain fatty acid produced by gut microbiota, on erastin-induced ferroptosis in lung cancer cells. Our results demonstrated that butyrate significantly enhanced erastin-induced ferroptosis in lung cancer cells, as evidenced by increased lipid peroxidation and reduced expression of glutathione peroxidase 4 (GPX4). Mechanistically, we found that butyrate modulated the pathway involving activating transcription factor 3 (ATF3) and solute carrier family 7 member 11 (SLC7A11), leading to enhanced erastin-induced ferroptosis. Furthermore, partial reversal of the effect of butyrate on ferroptosis was observed upon knockdown of ATF3 or SLC7A11. Collectively, our findings indicate that butyrate enhances erastin-induced ferroptosis in lung cancer cells by modulating the ATF3/SLC7A11 pathway, suggesting its potential as a therapeutic agent for cancer treatment.
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Affiliation(s)
- Rui Bi
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rui Hu
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lianyong Jiang
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bohan Wen
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhaolei Jiang
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hongtao Liu
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ju Mei
- Department of Cardiothoracic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Losol P, Wolska M, Wypych TP, Yao L, O'Mahony L, Sokolowska M. A cross talk between microbial metabolites and host immunity: Its relevance for allergic diseases. Clin Transl Allergy 2024; 14:e12339. [PMID: 38342758 PMCID: PMC10859320 DOI: 10.1002/clt2.12339] [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: 09/30/2023] [Revised: 01/07/2024] [Accepted: 01/22/2024] [Indexed: 02/13/2024] Open
Abstract
BACKGROUND Allergic diseases, including respiratory and food allergies, as well as allergic skin conditions have surged in prevalence in recent decades. In allergic diseases, the gut microbiome is dysbiotic, with reduced diversity of beneficial bacteria and increased abundance of potential pathogens. Research findings suggest that the microbiome, which is highly influenced by environmental and dietary factors, plays a central role in the development, progression, and severity of allergic diseases. The microbiome generates metabolites, which can regulate many of the host's cellular metabolic processes and host immune responses. AIMS AND METHODS Our goal is to provide a narrative and comprehensive literature review of the mechanisms through which microbial metabolites regulate host immune function and immune metabolism both in homeostasis and in the context of allergic diseases. RESULTS AND DISCUSSION We describe key microbial metabolites such as short-chain fatty acids, amino acids, bile acids and polyamines, elucidating their mechanisms of action, cellular targets and their roles in regulating metabolism within innate and adaptive immune cells. Furthermore, we characterize the role of bacterial metabolites in the pathogenesis of allergic diseases including allergic asthma, atopic dermatitis and food allergy. CONCLUSION Future research efforts should focus on investigating the physiological functions of microbiota-derived metabolites to help develop new diagnostic and therapeutic interventions for allergic diseases.
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Affiliation(s)
- Purevsuren Losol
- Department of Internal MedicineSeoul National University Bundang HospitalSeongnamKorea
- Department of Molecular Biology and GeneticsSchool of BiomedicineMongolian National University of Medical SciencesUlaanbaatarMongolia
| | - Magdalena Wolska
- Laboratory of Host‐Microbiota InteractionsNencki Institute of Experimental BiologyPolish Academy of SciencesWarsawPoland
| | - Tomasz P. Wypych
- Laboratory of Host‐Microbiota InteractionsNencki Institute of Experimental BiologyPolish Academy of SciencesWarsawPoland
| | - Lu Yao
- APC Microbiome IrelandUniversity College CorkCorkIreland
- Department of MedicineUniversity College CorkCorkIreland
- School of MicrobiologyUniversity College CorkCorkIreland
| | - Liam O'Mahony
- APC Microbiome IrelandUniversity College CorkCorkIreland
- Department of MedicineUniversity College CorkCorkIreland
- School of MicrobiologyUniversity College CorkCorkIreland
| | - Milena Sokolowska
- Swiss Institute of Allergy and Asthma Research (SIAF)University of ZurichDavosSwitzerland
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Sun X, Xi Y, Yan M, Sun C, Tang J, Dong X, Yang Z, Wu L. Lactiplantibacillus plantarum NKK20 Increases Intestinal Butyrate Production and Inhibits Type 2 Diabetic Kidney Injury through PI3K/Akt Pathway. J Diabetes Res 2023; 2023:8810106. [PMID: 38162631 PMCID: PMC10757665 DOI: 10.1155/2023/8810106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 11/30/2023] [Accepted: 12/09/2023] [Indexed: 01/03/2024] Open
Abstract
Nephropathy injury is a prevalent complication observed in individuals with diabetes, serving as a prominent contributor to end-stage renal disease, and the advanced glycation products (AGEs) are important factors that induce kidney injury in patients with diabetes. Addressing this condition remains a challenging aspect in clinical practice. The aim of this study was to explore the effects of Lactiplantibacillus plantarum NKK20 strain (NKK20) which protects against diabetic kidney disease (DKD) based on animal and cell models. The results showed that the NKK20 can significantly reduce renal inflammatory response, serum oxidative stress response, and AGE concentration in diabetic mice. After treatment with NKK20, the kidney damage of diabetic mice was significantly improved, and more importantly, the concentration of butyrate, a specific anti-inflammatory metabolite of intestinal flora in the stool of diabetic mice, was significantly increased. In addition, nontargeted metabolomics analysis showed a significant difference between the metabolites in the mouse serum contents of the NKK20 administration group and those in the nephropathy injury group, in which a total of 24 different metabolites that were significantly affected by NKK20 were observed, and these metabolites were mainly involved in glycerophospholipid metabolism and arachidonic acid metabolism. Also, the administration of butyrate to human kidney- (HK-) 2 cells that were stimulated by AGEs resulted in a significant upregulation of ZO-1, Occludin, and E-cadherin gene expressions and downregulation of α-SMA gene expression. This means that butyrate can maintain the tight junction structure of HK-2 cells and inhibit fibrosis. Butyrate also significantly inhibited the activation of PI3K/Akt pathway. These results indicate that NKK20 can treat kidney injury in diabetic mice by reducing blood glucose and AGE concentration and increasing butyrate production in the intestine. By inhibiting PI3K pathway activation in HK-2 cells, butyrate maintains a tight junction structure of renal tubule epithelial cells and inhibits renal tissue fibrosis. These results suggest that NKK20 is helpful to prevent and treat the occurrence and aggravation of diabetic kidney injury.
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Affiliation(s)
- Xiaohong Sun
- Department of Clinical Laboratory, Yizheng Hospital, Nanjing Drum Tower Hospital Group, Yizheng 210008, China
| | - Yue Xi
- Medical Laboratory Department, Huai'an Second People's Hospital, Huai'an 223022, China
| | - Man Yan
- Department of Clinical Laboratory, Zhenjiang City Central Blood Station, Zhenjiang 212399, China
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Chang Sun
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Jianjun Tang
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Xueyun Dong
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Zhengnan Yang
- Department of Clinical Laboratory, Yizheng Hospital, Nanjing Drum Tower Hospital Group, Yizheng 210008, China
| | - Liang Wu
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
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25
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Lin Y, Wu Y, Ma F, Shan C, Ma J, Li W, Pan H, Miao X, Liu J, Wang X, Ni Z. Exploration of the mechanism of Qi-Xian decoction in asthmatic mice using metabolomics combined with network pharmacology. Front Mol Biosci 2023; 10:1263962. [PMID: 38155957 PMCID: PMC10753777 DOI: 10.3389/fmolb.2023.1263962] [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: 07/20/2023] [Accepted: 11/27/2023] [Indexed: 12/30/2023] Open
Abstract
Introduction: Qi-Xian Decoction (QXD), a traditional Chinese medicine (TCM) formula consisting of eight herbs, has been clinically used to treat asthma. However, the underlying mechanisms have not been completely elucidated. This study aimed to combine metabolomics and network pharmacology to reveal the mechanism of action of QXD in asthma treatment. Methods: An ovalbumin (OVA)-induced asthma mouse model was constructed to evaluate the therapeutic effects of QXD. Serum metabolomics and network pharmacology were combined to study the mechanism of anti-asthma action as well as the potential target, and related biological functions were validated. Results: The QXD treatment has demonstrated significant protective effects in OVA-induced asthmatic mice, as evidenced by its ability to inhibit inflammation, IgE, mucus overproduction, and airway hyperreactivity (AHR). Metabolomic analysis has revealed a total of 140 differential metabolites associated with QXD treatment. In addition, network pharmacology has identified 126 genes that are linked to the effects of QXD, including TNF, IL-6, IL1β, STAT3, MMP9, EGFR, JUN, CCL2, TLR4, MAPK3 and MAPK8. Through comprehensive gene-metabolite interaction network analysis, seven key metabolites have been identified and associated with the potential anti-asthmatic effect of QXD, with palmitic acid (PA) being the most notable among them. In vitro validation studies have confirmed the gene-metabolite interaction involving PA, IL-6, and MAPK8. Furthermore, our research has demonstrated that QXD treatment can effectively inhibit PA-promoted IL-6 expression in MH-S cells and reduce PA concentration in OVA-induced asthmatic mice. Conclusion: The regulation of metabolic pathways by QXD was found to be associated with its anti-asthmatic action, which provides insight into the mechanism of QXD in treating asthma.
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Affiliation(s)
- Yuhua Lin
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yue Wu
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Fuqi Ma
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Cuiting Shan
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jialu Ma
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wenguan Li
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Huayang Pan
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiayi Miao
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jinjin Liu
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiongbiao Wang
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhenhua Ni
- Central Lab, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Ji Y, Yang Y, Wu Z. Programming of metabolic and autoimmune diseases in canine and feline: linkage to the gut microbiome. Microb Pathog 2023; 185:106436. [PMID: 37913827 DOI: 10.1016/j.micpath.2023.106436] [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: 07/20/2023] [Revised: 10/26/2023] [Accepted: 10/28/2023] [Indexed: 11/03/2023]
Abstract
Metabolic and autoimmune disorders have long represented challenging health problems because of their growing prevalence in companion animals. The gut microbiome, made up of trillions of microorganisms, is implicated in multiple physiological and pathological processes. Similar to human beings, the complicated microbiome harbored in the gut of canines and felines emerges as a key factor determining a wide range of normal and disease conditions. Evidence accumulated from recent findings on canine and feline research uncovered that the gut microbiome is actively involved in host metabolism and immunity. Notably, the composition, abundance, activity, and metabolites of the gut microbiome are all elements that shape clinical outcomes concerning metabolism and immune function. This review highlights the implications of the gut microbiome for metabolic disorders (obesity, diabetes, and hepatic lipidosis) and autoimmune diseases (inflammatory bowel disease, osteoarthritis, asthma, and myasthenia gravis) in canine and feline animals, providing novel strategies and therapeutic targets for the prevention and treatment of pet diseases.
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Affiliation(s)
- Yun Ji
- State Key Laboratory of Animal Nutrition and Feeding, China Agricultural University, Beijing, 100193, China.
| | - Ying Yang
- State Key Laboratory of Animal Nutrition and Feeding, China Agricultural University, Beijing, 100193, China
| | - Zhenlong Wu
- State Key Laboratory of Animal Nutrition and Feeding, China Agricultural University, Beijing, 100193, China
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27
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Sun J, Chen J, Xie Q, Sun M, Zhang W, Wang H, Liu N, Wang Q, Wang M. Sodium butyrate alleviates R97-116 peptide-induced myasthenia gravis in mice by improving the gut microbiota and modulating immune response. J Inflamm (Lond) 2023; 20:37. [PMID: 37924056 PMCID: PMC10625296 DOI: 10.1186/s12950-023-00363-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 10/17/2023] [Indexed: 11/06/2023] Open
Abstract
Fermented butyrate exhibits an anti-inflammatory response to maintain immune homeostasis within the gut. However, the effect and underlying mechanism of butyrate on myasthenia gravis (MG) remain unclear. The changes in the gut microbiota and fecal contents of SCFAs in MG patients were examined. R97-116 peptide was used to induce the experimental autoimmune myasthenia gravis (EAMG) mice and sodium butyrate (NaB) was gavaged to the EAMG mice. Gut microbiota, the frequency of Th1, Th17, Treg, Tfh, and B cells, the levels of IFN-γ, IL-17 A, IL-10, IL-21, and anti-R97-116 IgG, RNA-seq of total B cells in the spleen were explored by metagenomics, flow cytometry, ELISA, and transcriptomics. A significant reduction in SCFA-producing bacteria including Butyricimonas synergistica and functional modules including butyrate synthesis/production II was observed in MG patients and fecal SCFAs detection confirmed the increase. The EAMG mice were successfully constructed and NaB supplementation has changed the composition and function of the gut microbiota. The numbers of Th1, Th17, Tfh, and B cells were significantly increased while that of Treg cells was obviously decreased in EAMG mice compared with controls. Interestingly, NaB treatment has reduced the amounts of Th17, Tfh, and B cells but increased that of Treg cells. Accordingly, the levels of IL-17 A, IL-21, and IgG were increased while IL-10 was decreased in EAMG mice. However, NaB treatment reduced IL-17 A and IL-21 but increased that of IL-10. RNA-seq of B cells has revealed 4577 deferentially expressed genes (DEGs), in which 1218 DEGs were up-regulated while 3359 DEGs were down-regulated in NaB-treated EAMG mice. GO enrichment and KEGG pathway analysis unveiled that the function of these DEGs was mainly focused on immunoglobulin production, mitochondrial respiratory chain complex, ribosome, oxidative phosphorylation, and CNS diseases including amyotrophic lateral sclerosis. We have found that butyrate was significantly reduced in MG patients and NaB gavage could evidently improve MG symptoms in EAMG mice by changing the gut microbiota, regulating the immune response, and altering the gene expression and function of B cells, suggesting NaB might be a potential immunomodulatory supplement for MG drugs.
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Affiliation(s)
- Jing Sun
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, China
| | - Juanjuan Chen
- Cuiying Biomedical Research Center, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Qinfang Xie
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, China
| | - Mengjiao Sun
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, China
| | - Wenjing Zhang
- Department of Neurology, Qinghai Provincial People's Hospital, Xining, 810007, China
| | - Hongxia Wang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, China
| | - Ning Liu
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, China
| | - Qi Wang
- Cuiying Biomedical Research Center, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China.
| | - Manxia Wang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, China.
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28
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Hu M, Zhao X, Liu Y, Zhou H, You Y, Xue Z. Complex interplay of gut microbiota between obesity and asthma in children. Front Microbiol 2023; 14:1264356. [PMID: 38029078 PMCID: PMC10655108 DOI: 10.3389/fmicb.2023.1264356] [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: 07/27/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023] Open
Abstract
Obesity is an important risk factor and common comorbidity of childhood asthma. Simultaneously, obesity-related asthma, a distinct asthma phenotype, has attracted significant attention owing to its association with more severe clinical manifestations, poorer disease control, and reduced quality of life. The establishment of the gut microbiota during early life is essential for maintaining metabolic balance and fostering the development of the immune system in children. Microbial dysbiosis influences host lipid metabolism, triggers chronic low-grade inflammation, and affects immune responses. It is intimately linked to the susceptibility to childhood obesity and asthma and plays a potentially crucial transitional role in the progression of obesity-related asthma. This review article summarizes the latest research on the interplay between asthma and obesity, with a particular focus on the mediating role of gut microbiota in the pathogenesis of obesity-related asthma. This study aims to provide valuable insight to enhance our understanding of this condition and offer preliminary evidence to support the development of therapeutic interventions.
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Affiliation(s)
| | | | | | | | - Yannan You
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zheng Xue
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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29
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Zeng X, Yue H, Zhang L, Chen G, Zheng Q, Hu Q, Du X, Tian Q, Zhao X, Liang L, Yang Z, Bai H, Liu Y, Zhao M, Fu X. Gut microbiota-derived autoinducer-2 regulates lung inflammation through the gut-lung axis. Int Immunopharmacol 2023; 124:110971. [PMID: 37748222 DOI: 10.1016/j.intimp.2023.110971] [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: 07/25/2023] [Revised: 09/17/2023] [Accepted: 09/18/2023] [Indexed: 09/27/2023]
Abstract
OBJECTIVE This study aimed to determine whether autoinducer-2 (AI-2), a crucial bacterial metabolite and quorum sensing molecule, is involved in lung immunity through the gut-lung axis. METHODS The level of AI-2 and the gut microbiome composition were analysed in the stools from pneumonic patients and the mouse model of acute lung injury. The effect of AI-2 on lung inflammation was further investigated in the mouse model. RESULTS The diversity of the faecal microbiota was reduced in pneumonic patients treated with antibiotics compared with healthy volunteers. The AI-2 level in the stool was positively correlated with inflammatory molecules in the serum of pneumonic patients. Intraperitoneal injection of AI-2 reinforced lung inflammation in the acute lung injury mouse model, characterized by increased secretion of inflammatory molecules, including IL-6, IL-1β, C-C chemokines, and CXCL chemokines, which were alleviated by the AI-2 inhibitor D-ribose. CONCLUSIONS Our results suggested that gut microbiota-derived AI-2 could modulate lung inflammation through the gut-lung axis.
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Affiliation(s)
- Xianghao Zeng
- Clinical Medical College, North Sichuan Medical College, Nanchong City, Sichuan Province 637000, China; Department of Gastroenterology, Clinical Medical College and the First Affiliated Hospital of Chengdu Medical College, Chengdu City, Sichuan Province 610500, China
| | - Huawen Yue
- Clinical Medical College, North Sichuan Medical College, Nanchong City, Sichuan Province 637000, China
| | - Ling Zhang
- Clinical Medical College, North Sichuan Medical College, Nanchong City, Sichuan Province 637000, China
| | - Guimei Chen
- Clinical Medical College, North Sichuan Medical College, Nanchong City, Sichuan Province 637000, China
| | - Qiao Zheng
- Clinical Medical College, North Sichuan Medical College, Nanchong City, Sichuan Province 637000, China
| | - Qing Hu
- Clinical Medical College, North Sichuan Medical College, Nanchong City, Sichuan Province 637000, China
| | - Xinhao Du
- Department of Gastroenterology, Clinical Medical College and the First Affiliated Hospital of Chengdu Medical College, Chengdu City, Sichuan Province 610500, China
| | - Qian Tian
- Department of Gastroenterology, Clinical Medical College and the First Affiliated Hospital of Chengdu Medical College, Chengdu City, Sichuan Province 610500, China
| | - Xinyu Zhao
- Department of Gastroenterology, Clinical Medical College and the First Affiliated Hospital of Chengdu Medical College, Chengdu City, Sichuan Province 610500, China
| | - Lanfan Liang
- Department of Gastroenterology, Clinical Medical College and the First Affiliated Hospital of Chengdu Medical College, Chengdu City, Sichuan Province 610500, China
| | - Ziyi Yang
- Department of Gastroenterology, Clinical Medical College and the First Affiliated Hospital of Chengdu Medical College, Chengdu City, Sichuan Province 610500, China
| | - Hang Bai
- Department of Gastroenterology, Clinical Medical College and the First Affiliated Hospital of Chengdu Medical College, Chengdu City, Sichuan Province 610500, China
| | - Yanqin Liu
- Department of Gastroenterology, Clinical Medical College and the First Affiliated Hospital of Chengdu Medical College, Chengdu City, Sichuan Province 610500, China
| | - Ming Zhao
- Department of Gastroenterology, Clinical Medical College and the First Affiliated Hospital of Chengdu Medical College, Chengdu City, Sichuan Province 610500, China
| | - Xiangsheng Fu
- Department of Gastroenterology, Clinical Medical College and the First Affiliated Hospital of Chengdu Medical College, Chengdu City, Sichuan Province 610500, China.
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Wan W, Qiu Y, Huang X, Ren Y, Peng A, Yang C. Causal relationship between Butyricimonas and allergic asthma: a two-sample Mendelian randomization study. Front Microbiol 2023; 14:1190765. [PMID: 37869656 PMCID: PMC10587591 DOI: 10.3389/fmicb.2023.1190765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 09/25/2023] [Indexed: 10/24/2023] Open
Abstract
Background Growing evidence has well documented the close association between the gut microbiome and allergic respiratory disease, which has been notably represented by allergic asthma. However, it is unclear whether this association is a causal link. Therefore, we investigated the potential causal associations between the gut microbiome and allergic asthma or other allergic diseases. Methods In this study, we performed two-sample Mendelian randomization (MR) analyses by using the publicly available genome-wide association study (GWAS) summary data. Single-nucleotide polymorphisms (SNPs) that significantly correlated were selected as instrumental variables. The inverse variance weighted (IVW) method was used to examine the potential causal gut microbial genera for allergic asthma and other allergic diseases. The robustness of the primary findings of the MR analyses was ensured by using different sensitivity analyses. Results Combining the findings from multiple analyses, the host genetic-driven increases in Butyricimonas at the genus level were positively correlated with the risk of allergic asthma. In addition, phylum Bacteroidetes and class Bacteroidia were also found to have negative associations with the risk of allergic asthma; genus Slackia was identified as having potential causal effects with allergic asthma. No clear evidence of pleiotropy and heterogeneity was observed in genus Butyricimonas. Butyricimonas was also found to have an association with allergic rhinitis, but not with other allergic diseases. Conclusion Our findings indicate that there are new gut microbial genera that were causally associated with the risk of allergic asthma and other allergic diseases, and offer novel insights into the pathogenesis of allergic respiratory diseases.
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Affiliation(s)
| | | | | | | | | | - Chunping Yang
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
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Gudneppanavar R, Sabu Kattuman EE, Teegala LR, Southard E, Tummala R, Joe B, Thodeti CK, Paruchuri S. Epigenetic histone modification by butyrate downregulates KIT and attenuates mast cell function. J Cell Mol Med 2023; 27:2983-2994. [PMID: 37603611 PMCID: PMC10538265 DOI: 10.1111/jcmm.17924] [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: 05/23/2023] [Revised: 08/04/2023] [Accepted: 08/12/2023] [Indexed: 08/23/2023] Open
Abstract
Short-chain fatty acid butyrate is produced from the bacterial fermentation of indigestible fiber in the intestinal lumen, and it has been shown to attenuate lung inflammation in murine asthma models. Mast cells (MCs) are initiators of inflammatory response to allergens, and they play an important role in asthma. MC survival and proliferation is regulated by its growth factor stem cell factor (SCF), which acts through the receptor, KIT. It has previously been shown that butyrate attenuates the activation of MCs by allergen stimulation. However, how butyrate mechanistically influences SCF signalling to impact MC function remains unknown. Here, we report that butyrate treatment triggered the modification of MC histones via butyrylation and acetylation, and inhibition of histone deacetylase (HDAC) activity. Further, butyrate treatment caused downregulation of SCF receptor KIT and associated phosphorylation, leading to significant attenuation of SCF-mediated MC proliferation, and pro-inflammatory cytokine secretion. Mechanistically, butyrate inhibited MC function by suppressing KIT and downstream p38 and Erk phosphorylation, and it mediated these effects via modification of histones, acting as an HDAC inhibitor and not via its traditional GPR41 (FFAR3) or GPR43 (FFAR2) butyrate receptors. In agreement, the pharmacological inhibition of Class I HDAC (HDAC1/3) mirrored butyrate's effects, suggesting that butyrate impacts MC function by HDAC1/3 inhibition. Taken together, butyrate epigenetically modifies histones and downregulates the SCF/KIT/p38/Erk signalling axis, leading to the attenuation of MC function, validating its ability to suppress MC-mediated inflammation. Therefore, butyrate supplementations could offer a potential treatment strategy for allergy and asthma via epigenetic alterations in MCs.
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Affiliation(s)
- Ravindra Gudneppanavar
- Department of Physiology and PharmacologyThe University of Toledo College of Medicine and Life SciencesToledoOhioUSA
| | - Emma Elizabeth Sabu Kattuman
- Department of Physiology and PharmacologyThe University of Toledo College of Medicine and Life SciencesToledoOhioUSA
| | - Lakshminarayan Reddy Teegala
- Department of Physiology and PharmacologyThe University of Toledo College of Medicine and Life SciencesToledoOhioUSA
| | - Erik Southard
- Department of Physiology and PharmacologyThe University of Toledo College of Medicine and Life SciencesToledoOhioUSA
| | - Ramakumar Tummala
- Department of Physiology and PharmacologyThe University of Toledo College of Medicine and Life SciencesToledoOhioUSA
| | - Bina Joe
- Department of Physiology and PharmacologyThe University of Toledo College of Medicine and Life SciencesToledoOhioUSA
| | - Charles K. Thodeti
- Department of Physiology and PharmacologyThe University of Toledo College of Medicine and Life SciencesToledoOhioUSA
| | - Sailaja Paruchuri
- Department of Physiology and PharmacologyThe University of Toledo College of Medicine and Life SciencesToledoOhioUSA
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32
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Dang K, Zhang N, Gao H, Wang G, Liang H, Xue M. Influence of intestinal microecology in the development of gout or hyperuricemia and the potential therapeutic targets. Int J Rheum Dis 2023; 26:1911-1922. [PMID: 37606177 DOI: 10.1111/1756-185x.14888] [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: 01/07/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 08/23/2023]
Abstract
Gout and hyperuricemia are common metabolic diseases. Patients with purine metabolism disorder and/or decreased uric acid excretion showed increased uric acid levels in the blood. The increase of uric acid in the blood leads to the deposition of urate crystals in tissues, joints, and kidneys, and causes gout. Recent studies have revealed that imbalance of the intestinal microecology is closely related to the occurrence and development of hyperuricemia and gout. Disorder of the intestinal flora often occurs in patients with gout, and high purine and high fructose may induce the disorder of intestinal flora. Short-chain fatty acids and endotoxins produced by intestinal bacteria are closely related to the inflammatory response of gout. This article summarizes the characteristics of intestinal microecology in patients or animal models with hyperuricemia or gout, and explores the relationship between intestinal microecology and gout or hyperuricemia from the aspect of the intestinal barrier, intestinal microorganisms, intestinal metabolites, and intestinal immune system. We also review the current status of hyperuricemia treatment by targeting intestinal microecology.
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Affiliation(s)
- Kai Dang
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Nan Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Haiqi Gao
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Guifa Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Hui Liang
- Department of Human Nutrition, College of Public Health, Qingdao University, Qingdao, China
| | - Meilan Xue
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Qingdao University, Qingdao, China
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Haldar S, Jadhav SR, Gulati V, Beale DJ, Balkrishna A, Varshney A, Palombo EA, Karpe AV, Shah RM. Unravelling the gut-lung axis: insights into microbiome interactions and Traditional Indian Medicine's perspective on optimal health. FEMS Microbiol Ecol 2023; 99:fiad103. [PMID: 37656879 PMCID: PMC10508358 DOI: 10.1093/femsec/fiad103] [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: 01/16/2023] [Revised: 07/05/2023] [Accepted: 08/30/2023] [Indexed: 09/03/2023] Open
Abstract
The microbiome of the human gut is a complex assemblage of microorganisms that are in a symbiotic relationship with one another and profoundly influence every aspect of human health. According to converging evidence, the human gut is a nodal point for the physiological performance matrixes of the vital organs on several axes (i.e. gut-brain, gut-lung, etc). As a result of COVID-19, the importance of gut-lung dysbiosis (balance or imbalance) has been realised. In view of this, it is of utmost importance to develop a comprehensive understanding of the microbiome, as well as its dysbiosis. In this review, we provide an overview of the gut-lung axial microbiome and its importance in maintaining optimal health. Human populations have successfully adapted to geophysical conditions through traditional dietary practices from around the world. In this context, a section has been devoted to the traditional Indian system of medicine and its theories and practices regarding the maintenance of optimally customized gut health.
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Affiliation(s)
- Swati Haldar
- Drug Discovery and Development Division, Patanjali Research Institute, NH-58, Haridwar 249405, Uttarakhand, India
| | - Snehal R Jadhav
- Consumer-Analytical-Safety-Sensory (CASS) Food Research Centre, School of Exercise and Nutrition Sciences, Deakin University, Burwood, VIC 3125, Australia
| | - Vandana Gulati
- Biomedical Science, School of Science and Technology Faculty of Science, Agriculture, Business and Law, University of New England, Armidale, NSW 2351, Australia
| | - David J Beale
- Environment, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Ecosciences Precinct, Dutton Park, QLD 4102, Australia
| | - Acharya Balkrishna
- Drug Discovery and Development Division, Patanjali Research Institute, NH-58, Haridwar 249405, Uttarakhand, India
- Department of Allied and Applied Sciences, University of Patanjali, Patanjali Yog Peeth, Roorkee-Haridwar Road, Haridwar 249405, Uttarakhand, India
| | - Anurag Varshney
- Drug Discovery and Development Division, Patanjali Research Institute, NH-58, Haridwar 249405, Uttarakhand, India
- Department of Allied and Applied Sciences, University of Patanjali, Patanjali Yog Peeth, Roorkee-Haridwar Road, Haridwar 249405, Uttarakhand, India
| | - Enzo A Palombo
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Avinash V Karpe
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
- Socio-Eternal Thinking for Unity (SETU), Melbourne, VIC 3805, Australia
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Acton, ACT 2601, Australia
| | - Rohan M Shah
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
- School of Health and Biomedical Sciences, STEM College, RMIT University, Bundoora West, VIC 3083, Australia
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Du B, Fu Y, Han Y, Sun Q, Xu J, Yang Y, Rong R. The lung-gut crosstalk in respiratory and inflammatory bowel disease. Front Cell Infect Microbiol 2023; 13:1218565. [PMID: 37680747 PMCID: PMC10482113 DOI: 10.3389/fcimb.2023.1218565] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 07/28/2023] [Indexed: 09/09/2023] Open
Abstract
Both lung and gut belong to the common mucosal immune system (CMIS), with huge surface areas exposed to the external environment. They are the main defense organs against the invasion of pathogens and play a key role in innate and adaptive immunity. Recently, more and more evidence showed that stimulation of one organ can affect the other, as exemplified by intestinal complications during respiratory disease and vice versa, which is called lung-gut crosstalk. Intestinal microbiota plays an important role in respiratory and intestinal diseases. It is known that intestinal microbial imbalance is related to inflammatory bowel disease (IBD), this imbalance could impact the integrity of the intestinal epithelial barrier and leads to the persistence of inflammation, however, gut microbial disturbances have also been observed in respiratory diseases such as asthma, allergy, chronic obstructive pulmonary disease (COPD), and respiratory infection. It is not fully clarified how these disorders happened. In this review, we summarized the latest examples and possible mechanisms of lung-gut crosstalk in respiratory disease and IBD and discussed the strategy of shaping intestinal flora to treat respiratory diseases.
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Affiliation(s)
- Baoxiang Du
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yan Fu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yuxiu Han
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Qihui Sun
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Jinke Xu
- Shandong Center for Disease Control and Prevention, Jinan, China
| | - Yong Yang
- Shandong Antiviral Engineering Research Center of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Rong Rong
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Jinan, China
- Shandong Provincial Key Laboratory of Traditional Chinese Medicine for Basic Research, Shandong University of Traditional Chinese Medicine, Jinan, China
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Zhao X, Hu M, Zhou H, Yang Y, Shen S, You Y, Xue Z. The role of gut microbiome in the complex relationship between respiratory tract infection and asthma. Front Microbiol 2023; 14:1219942. [PMID: 37577440 PMCID: PMC10413575 DOI: 10.3389/fmicb.2023.1219942] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 06/19/2023] [Indexed: 08/15/2023] Open
Abstract
Asthma is one of the common chronic respiratory diseases in children, which poses a serious threat to children's quality of life. Respiratory infection is a risk factor for asthma. Compared with healthy children, children with early respiratory infections have a higher risk of asthma and an increased chance of developing severe asthma. Many clinical studies have confirmed the correlation between respiratory infections and the pathogenesis of asthma, but the underlying mechanism is still unclear. The gut microbiome is an important part of maintaining the body's immune homeostasis. The imbalance of the gut microbiome can affect the lung immune function, and then affect lung health and cause respiratory diseases. A large number of evidence supports that there is a bidirectional regulation between intestinal flora and respiratory tract infection, and both are significantly related to the development of asthma. The changes of intestinal microbial components and their metabolites in respiratory tract infection may affect the occurrence and development of asthma through the immune pathway. By summarizing the latest advancements in research, this review aims to elucidate the intricate connection between respiratory tract infections and the progression of asthma by highlighting its bridging role of the gut microbiome. Furthermore, it offers novel perspectives and ideas for future investigations into the mechanisms that underlie the relationship between respiratory tract infections and asthma.
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Affiliation(s)
| | | | | | | | | | - Yannan You
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zheng Xue
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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36
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Kubala S, Haque TT. Editorial: Mast cells in allergic diseases. FRONTIERS IN ALLERGY 2023; 4:1248954. [PMID: 37534194 PMCID: PMC10393252 DOI: 10.3389/falgy.2023.1248954] [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: 06/27/2023] [Accepted: 07/13/2023] [Indexed: 08/04/2023] Open
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Verhoef JI, Klont E, van Overveld FJ, Rijkers GT. The long and winding road of faecal microbiota transplants to targeted intervention for improvement of immune checkpoint inhibition therapy. Expert Rev Anticancer Ther 2023; 23:1179-1191. [PMID: 37746903 DOI: 10.1080/14737140.2023.2262765] [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: 06/07/2023] [Accepted: 09/20/2023] [Indexed: 09/26/2023]
Abstract
INTRODUCTION Immune checkpoint inhibition (ICI) therapy has revolutionized the treatment of cancer. Inhibitory molecules, either on the tumor or on cells of the immune system, are blocked, allowing the immune system of the patient to attack and eradicate the tumor. Not all patients respond to ICI therapy, and response or non-response has been associated with composition of gut microbiota. AREA COVERED Fecal microbiota transplantation (FMT) is used as adjunctive therapy in order to improve the outcome of ICI. ClinicalTrials.gov, and other databases were searched (October 2022) for studies dealing with gut microbiota modification and the outcome of ICI. EXPERT OPINION There is ample evidence for the beneficial effect of FMT on the outcome of ICI therapy for cancer, especially melanoma. Progress is being made in the unraveling of the mechanisms by which microbiota and their metabolites (butyrate and the tryptophan metabolite indole-3-aldehyde) interact with the mucosal immune system of the host. A better understanding of the mechanisms involved will allow the identification of key bacterial species which mediate the effect of FMT. Promising species are Faecalibacterium prausnitzii, Eubacterium rectale, Bifidobacterium adolescentis, B. bifidum, and B. longum, because they are important direct and indirect butyrate producers.
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Affiliation(s)
- Jasmijn I Verhoef
- Dept. of Science, University College Roosevelt, Middelburg, The Netherlands
| | - Ediz Klont
- Dept. of Science, University College Roosevelt, Middelburg, The Netherlands
| | | | - Ger T Rijkers
- Dept. of Science, University College Roosevelt, Middelburg, The Netherlands
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Rahman S, O’Connor AL, Becker SL, Patel RK, Martindale RG, Tsikitis VL. Gut microbial metabolites and its impact on human health. Ann Gastroenterol 2023; 36:360-368. [PMID: 37396009 PMCID: PMC10304525 DOI: 10.20524/aog.2023.0809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 03/03/2023] [Indexed: 07/04/2023] Open
Abstract
One of the primary methods by which the gut microbiome interacts with its host is through the interactions that occur through the production of the metabolites produced, either directly, or indirectly, through microbial metabolism. Decades of research has demonstrated that these metabolic products play a vital role in human health, either for its benefit or detriment. This review article highlights the main metabolites produced by the interactions between diet and the gut microbiome, bile acids and the gut microbiome, and products produced by the gut microbiome alone. Additionally, this article reviews the literature on the effects that these metabolites play on human health.
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Affiliation(s)
- Shahrose Rahman
- Department of Surgery, Oregon Health and Science University, Portland, OR, USA
| | - Amber L. O’Connor
- Department of Surgery, Oregon Health and Science University, Portland, OR, USA
| | - Sarah L. Becker
- Department of Surgery, Oregon Health and Science University, Portland, OR, USA
| | - Ranish K. Patel
- Department of Surgery, Oregon Health and Science University, Portland, OR, USA
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Tieu V, Tibi S, Ling J. Regulation of SARS-CoV-2 infection by diet-modulated gut microbiota. Front Cell Infect Microbiol 2023; 13:1167827. [PMID: 37457959 PMCID: PMC10339388 DOI: 10.3389/fcimb.2023.1167827] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 06/05/2023] [Indexed: 07/18/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2 infection has claimed millions of lives since late 2019, yet there are still many unexplored areas in its pathogenesis and clinical outcomes. COVID-19 is a disease that can affects multiple systems, some of which are overlapped with those modulated by gut microbiota, especially the immune system, thus leading to our concentration on analyzing the roles of microbiota in COVID-19 pathogenesis through the gut-lung axis. Dysbiosis of the commensal intestinal microbes and their metabolites (e.g., SCFAs) as well as the expression and activity of ACE2 in the gut could influence the host's immune system in COVID-19 patients. Moreover, it has been known that the elderly and individuals diagnosed with comorbidities (e.g., hypertension, type 2 diabetes mellitus, cardiovascular disease, etc.) are more susceptible to gut flora alterations, SARS-CoV-2 infection, and death. Thus, in this review we will focus on analyzing how the gut microbiota regulates the immune system that leads to different responses to SARS-CoV-2 infection. Since diet is a major factor to modulate the status of gut microbiota, dietary influence on COVID-19 pathogenesis will be also discussed, aiming to shed light on how diet-modulated gut microbiota regulates the susceptibility, severity, and treatment of SARS-CoV-2 infection.
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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.
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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
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Zhou Y, Liu M, Liu K, Wu G, Tan Y. Lung microbiota and potential treatment of respiratory diseases. Microb Pathog 2023:106197. [PMID: 37321423 DOI: 10.1016/j.micpath.2023.106197] [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: 04/15/2023] [Revised: 05/21/2023] [Accepted: 06/06/2023] [Indexed: 06/17/2023]
Abstract
The unique microbiome found in the lungs has been studied and shown to be associated with both pulmonary homeostasis and lung diseases. The lung microbiome has the potential to produce metabolites that modulate host-microbe interactions. Specifically, short-chain fatty acids (SCFAs) produced by certain strains of the lung microbiota have been shown to regulate immune function and maintain gut mucosal health. In response, this review described the distribution and composition of the microbiota in lung diseases and discussed the impact of the lung microbiota on health and lung disease. In addition, the review further elaborated on the mechanism of microbial metabolites in microbial-host interaction and their application in the treatment of lung diseases. A better understanding of the interaction between the microbiota, metabolites, and host will provide potential strategies for the development of novel methods for the treatment of pulmonary microbial induced lung diseases.
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Affiliation(s)
- Yaxuan Zhou
- Department of Psychiatry, Department of Medicine, Xiangya School of Medical, Central South University, Changsha, 410083, Hunan, China
| | - Mengjun Liu
- Department of Clinical Medicine, Xiangya School of Medicine, Central South University, Changsha, 410083, Hunan, China
| | - Kaixuan Liu
- Department of Excellent Doctor Training, Xiangya School of Medicine, Central South University, Changsha, 410083, Hunan, China
| | - Guojun Wu
- Department of Medical Microbiology, School of Basic Medicine, Central South University, Changsha, 410083, Hunan, China.
| | - Yurong Tan
- Department of Medical Microbiology, School of Basic Medicine, Central South University, Changsha, 410083, Hunan, China.
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Mohanan MM, Shetty R, Bang-Berthelsen CH, Mudnakudu-Nagaraju KK. Role of Mesenchymal Stem Cells and Short Chain Fatty Acids in Allergy: A Prophylactic Therapy for Future. Immunol Lett 2023:S0165-2478(23)00096-2. [PMID: 37271295 DOI: 10.1016/j.imlet.2023.06.002] [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: 03/20/2023] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/06/2023]
Abstract
Allergic diseases are broadly classified as IgE-mediated type-I hypersensitivity immune reactions due to exposure to typically harmless substances known as allergens. These allergenic substances activate antigen presenting cells, which further triggers T-helper 2 cells immune response and class switch B-cells for synthesis of allergen-specific IgE, followed by classical activation of inflammatory mast cells and eosinophils, which releases preformed mediators involved in the cascade of allergic symptoms. However, the role of Mesenchymal stem cells (MSCs) in tissue repair ability and immunomodulation, makes them as an appropriate tool for treatment of various allergic diseases. Several clinical and preclinical studies show that MSCs could be a promising alternative therapy to allergic diseases. Further, short chain fatty acids, produced from gut microbes by breaking down complex fibre-rich foods, acts through G-coupled receptor mediated activation of MSCs, and their role as key players involved in amelioration of allergic inflammation needs further investigation. Therefore, there is a need for understating the role of SCFAs on the activation of MSCs, which might shed light on the development of new therapeutic regime in allergy treatment. In summary, this review focuses on the underlying of therapeutic role of MSCs in different allergic diseases and the prospects of SCFA and MSC therapy.
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Affiliation(s)
- Mrudula M Mohanan
- Department of Biotechnology & Bioinformatics, JSS Academy of Higher Education & Research, Mysore 570015, Karnataka, India
| | - Radhakrishna Shetty
- Research Group for Microbial Biotechnology and Biorefining, National Food Institute, Technical University of Denmark, Kemitorvet, Building 202, 2800, Kongens, Lyngby, Denmark
| | - Claus Heiner Bang-Berthelsen
- Research Group for Microbial Biotechnology and Biorefining, National Food Institute, Technical University of Denmark, Kemitorvet, Building 202, 2800, Kongens, Lyngby, Denmark.
| | - Kiran Kumar Mudnakudu-Nagaraju
- Department of Biotechnology & Bioinformatics, JSS Academy of Higher Education & Research, Mysore 570015, Karnataka, India..
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Liu XF, Shao JH, Liao YT, Wang LN, Jia Y, Dong PJ, Liu ZZ, He DD, Li C, Zhang X. Regulation of short-chain fatty acids in the immune system. Front Immunol 2023; 14:1186892. [PMID: 37215145 PMCID: PMC10196242 DOI: 10.3389/fimmu.2023.1186892] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 04/24/2023] [Indexed: 05/24/2023] Open
Abstract
A growing body of research suggests that short-chain fatty acids (SCFAs), metabolites produced by intestinal symbiotic bacteria that ferment dietary fibers (DFs), play a crucial role in the health status of symbiotes. SCFAs act on a variety of cell types to regulate important biological processes, including host metabolism, intestinal function, and immune function. SCFAs also affect the function and fate of immune cells. This finding provides a new concept in immune metabolism and a better understanding of the regulatory role of SCFAs in the immune system, which impacts the prevention and treatment of disease. The mechanism by which SCFAs induce or regulate the immune response is becoming increasingly clear. This review summarizes the different mechanisms through which SCFAs act in cells. According to the latest research, the regulatory role of SCFAs in the innate immune system, including in NLRP3 inflammasomes, receptors of TLR family members, neutrophils, macrophages, natural killer cells, eosinophils, basophils and innate lymphocyte subsets, is emphasized. The regulatory role of SCFAs in the adaptive immune system, including in T-cell subsets, B cells, and plasma cells, is also highlighted. In addition, we discuss the role that SCFAs play in regulating allergic airway inflammation, colitis, and osteoporosis by influencing the immune system. These findings provide evidence for determining treatment options based on metabolic regulation.
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Affiliation(s)
- Xiao-feng Liu
- Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
| | - Jia-hao Shao
- Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
| | - Yi-Tao Liao
- Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
| | - Li-Ning Wang
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Yuan Jia
- Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
| | - Peng-jun Dong
- Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
| | - Zhi-zhong Liu
- Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
| | - Dan-dan He
- Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
| | - Chao Li
- Department of Spine, Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
| | - Xian Zhang
- Department of Spine, Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
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Stec A, Sikora M, Maciejewska M, Paralusz-Stec K, Michalska M, Sikorska E, Rudnicka L. Bacterial Metabolites: A Link between Gut Microbiota and Dermatological Diseases. Int J Mol Sci 2023; 24:ijms24043494. [PMID: 36834904 PMCID: PMC9961773 DOI: 10.3390/ijms24043494] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/04/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
Dysbiosis has been identified in many dermatological conditions (e.g., psoriasis, atopic dermatitis, systemic lupus erythematosus). One of the ways by which the microbiota affect homeostasis is through microbiota-derived molecules (metabolites). There are three main groups of metabolites: short-chain fatty acids (SCFAs), tryptophan metabolites, and amine derivatives including trimethylamine N-oxide (TMAO). Each group has its own uptake and specific receptors through which these metabolites can exert their systemic function. This review provides up-to-date knowledge about the impact that these groups of gut microbiota metabolites may have in dermatological conditions. Special attention is paid to the effect of microbial metabolites on the immune system, including changes in the profile of the immune cells and cytokine disbalance, which are characteristic of several dermatological diseases, especially psoriasis and atopic dermatitis. Targeting the production of microbiota metabolites may serve as a novel therapeutic approach in several immune-mediated dermatological diseases.
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Affiliation(s)
- Albert Stec
- Department of Dermatology, Medical University of Warsaw, Koszykowa 82A, 02-008 Warsaw, Poland
| | - Mariusz Sikora
- National Institute of Geriatrics, Rheumatology and Rehabilitation, Spartańska 1, 02-637 Warsaw, Poland
- Correspondence:
| | - Magdalena Maciejewska
- Department of Dermatology, Medical University of Warsaw, Koszykowa 82A, 02-008 Warsaw, Poland
| | - Karolina Paralusz-Stec
- Department of Dermatology, Medical University of Warsaw, Koszykowa 82A, 02-008 Warsaw, Poland
| | - Milena Michalska
- Department of General, Vascular and Transplant Surgery, Medical University of Warsaw, Banacha 1a, 02-097 Warsaw, Poland
| | - Ewa Sikorska
- Department of Experimental and Clinical Physiology Center for Preclinical Research, Medical University of Warsaw, Banacha 1b, 02-097 Warsaw, Poland
| | - Lidia Rudnicka
- Department of Dermatology, Medical University of Warsaw, Koszykowa 82A, 02-008 Warsaw, Poland
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Chakraborty M, Gautam A, Das O, Masid A, Bhaumik M. Prenatal arsenic exposure stymies gut butyrate production and enhances gut permeability in post natal life even in absence of arsenic deftly through miR122-Occludin pathway. Toxicol Lett 2023; 374:19-30. [PMID: 36473683 DOI: 10.1016/j.toxlet.2022.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 12/11/2022]
Abstract
This discourse attempts to capture a few important dimensions of gut physiology like microbial homeostasis, short chain fatty acid (SCFA) production, occludin expression, and gut permeability in post-natal life of mice those received arsenic only during pre-natal life. Adult Balb/c mice were fed with 4 ppm arsenic trioxide in drinking water during breeding and gestation. After the birth of the pups, the arsenic water was withdrawn and replaced with clean drinking water. The pups were allowed to grow for 28 days (pAs-mice) and age matched Balb/c mice which were never exposed to arsenic served as control The pAs-mice showed a striking reduction in Firmicutes to Bacteroidetes (F/B) ratio coupled with a decrease in tight junction protein, occludin resulting in an increase in gut permeability, increased infiltration of inflammatory cells in the colon and decrease in common SCFAs in which butyrate reduction was quite prominent in fecal samples as compared to normal control. The above phenotypes of pAs-mice were mostly reversed by supplementing 5% sodium butyrate (w/w) with food from 21st to 28th day. The ability of butyrate in enhancing occludin expression, in particular, was dissected further. As miR122 causes degradation of Occludin mRNA, we transiently overexpressed miR122 by injecting appropriate plasmids and showed reversal of butyrate effects in pAs-mice. Thus, pre-natal arsenic exposure orchestrates variety of effects by decreasing butyrate in pAs-mice leading to increased permeability due to reduced occludin expression. Our research adds a new dimension to our understanding that pre-natal arsenic exposure imprints in post-natal life while there was no further arsenic exposure.
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Affiliation(s)
- Mainak Chakraborty
- Division of Immunology, ICMR-National Institute of Cholera and Enteric Diseases, Beleghata, Kolkata 700010, India
| | - Anupam Gautam
- Department of Algorithms in Bioinformatics, Institute for Bioinformatics and Medical Informatics, University of Tübingen, Sand 14, 72076 Tübingen, Germany; International Max Planck Research School "From Molecules to Organisms'', Max Planck Institute for Biology Tübingen, Max-Planck-Ring∼5, 72076 Tübingen, Germany
| | - Oishika Das
- Division of Immunology, ICMR-National Institute of Cholera and Enteric Diseases, Beleghata, Kolkata 700010, India
| | - Aaheli Masid
- Division of Immunology, ICMR-National Institute of Cholera and Enteric Diseases, Beleghata, Kolkata 700010, India
| | - Moumita Bhaumik
- Division of Immunology, ICMR-National Institute of Cholera and Enteric Diseases, Beleghata, Kolkata 700010, India.
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Nan X, Zhao W, Liu WH, Li Y, Li N, Hong Y, Cui J, Shang X, Feng H, Hung WL, Peng G. Bifidobacterium animalis subsp. lactis BL-99 ameliorates colitis-related lung injury in mice by modulating short-chain fatty acid production and inflammatory monocytes/macrophages. Food Funct 2023; 14:1099-1112. [PMID: 36594489 DOI: 10.1039/d2fo03374g] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Pulmonary inflammation as one of the extraintestinal manifestations of ulcerative colitis (UC) has attracted extensive attention, and its pathogenesis is closely related to gut dysbiosis. Bifidobacterium animalis subsp. lactis BL-99 (BL-99) can alleviate osteoporosis caused by UC, but less research has been done on other extraintestinal manifestations (EIM) caused by UC. This study aimed to explore the role and potential mechanisms of BL-99 on DSS-induced pulmonary complications in colitis mice. The results showed that BL-99 decreased weight loss, disease activity index score, colonic pathology score, and the production of pro-inflammatory cytokines (e.g., TNF-α, IL-1β, and IL-6) in colitis mice. BL-99 also alleviated DSS-induced lung pathological damage by suppressing the infiltration of pro-inflammatory cytokines, inflammatory monocytes, and macrophages. Furthermore, 16S rRNA gene sequencing showed lower abundances of several potentially pathogenic bacteria (e.g., Burkholderia, Shigella, and Clostridium perfringens) and enrichment in specific beneficial bacteria (e.g., Adlercreutzia and Bifidobacterium animalis) in colitis mice with BL-99 treatment. Targeted metabolomics suggested that BL-99 intervention promoted the production of intestinal acetate and butyrate. Finally, we observed that the pulmonary expression of primary acetate and butyrate receptors, including FFAR2, FFAR3, and, GPR109a, was up-regulated in BL-99-treated mice, which negatively correlated with inflammatory monocytes and macrophages. Altogether, these results suggest that BL-99 might be utilized as a probiotic intervention to prevent the incidence of colitis-related lung injury owing to its ability to shape the intestinal microbiota and suppress inflammation.
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Affiliation(s)
- Xinmei Nan
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China.
| | - Wen Zhao
- Inner Mongolia Yili Industrial Group Co., Ltd., Hohhot 010110, Inner Mongolia, China.
| | - Wei-Hsien Liu
- Inner Mongolia Yili Industrial Group Co., Ltd., Hohhot 010110, Inner Mongolia, China.
| | - Yalan Li
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China.
| | - Na Li
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China.
| | - Yanfei Hong
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China.
| | - Jiaqi Cui
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China.
| | - Xuekai Shang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China.
| | - Haotian Feng
- Inner Mongolia Yili Industrial Group Co., Ltd., Hohhot 010110, Inner Mongolia, China.
| | - Wei-Lian Hung
- Inner Mongolia Yili Industrial Group Co., Ltd., Hohhot 010110, Inner Mongolia, China.
| | - Guiying Peng
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China.
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Singh V, Lee G, Son H, Koh H, Kim ES, Unno T, Shin JH. Butyrate producers, "The Sentinel of Gut": Their intestinal significance with and beyond butyrate, and prospective use as microbial therapeutics. Front Microbiol 2023; 13:1103836. [PMID: 36713166 PMCID: PMC9877435 DOI: 10.3389/fmicb.2022.1103836] [Citation(s) in RCA: 64] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 12/28/2022] [Indexed: 01/15/2023] Open
Abstract
Gut-microbial butyrate is a short-chain fatty acid (SCFA) of significant physiological importance than the other major SCFAs (acetate and propionate). Most butyrate producers belong to the Clostridium cluster of the phylum Firmicutes, such as Faecalibacterium, Roseburia, Eubacterium, Anaerostipes, Coprococcus, Subdoligranulum, and Anaerobutyricum. They metabolize carbohydrates via the butyryl-CoA: acetate CoA-transferase pathway and butyrate kinase terminal enzymes to produce most of butyrate. Although, in minor fractions, amino acids can also be utilized to generate butyrate via glutamate and lysine pathways. Butyrogenic microbes play a vital role in various gut-associated metabolisms. Butyrate is used by colonocytes to generate energy, stabilizes hypoxia-inducible factor to maintain the anaerobic environment in the gut, maintains gut barrier integrity by regulating Claudin-1 and synaptopodin expression, limits pro-inflammatory cytokines (IL-6, IL-12), and inhibits oncogenic pathways (Akt/ERK, Wnt, and TGF-β signaling). Colonic butyrate producers shape the gut microbial community by secreting various anti-microbial substances, such as cathelicidins, reuterin, and β-defensin-1, and maintain gut homeostasis by releasing anti-inflammatory molecules, such as IgA, vitamin B, and microbial anti-inflammatory molecules. Additionally, butyrate producers, such as Roseburia, produce anti-carcinogenic metabolites, such as shikimic acid and a precursor of conjugated linoleic acid. In this review, we summarized the significance of butyrate, critically examined the role and relevance of butyrate producers, and contextualized their importance as microbial therapeutics.
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Affiliation(s)
- Vineet Singh
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - GyuDae Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - HyunWoo Son
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Hong Koh
- Department of Pediatrics, Severance Fecal Microbiota Transplantation Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Eun Soo Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Tatsuya Unno
- Faculty of Biotechnology, School of Life Sciences, SARI, Jeju National University, Jeju, Republic of Korea,*Correspondence: Tatsuya Unno, ✉
| | - Jae-Ho Shin
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea,Department of Integrative Biotechnology, Kyungpook National University, Daegu, Republic of Korea,Jae-Ho Shin, ✉
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Zheng H, Dai H, Yan X, Xiang Q. Study on Intestinal Flora and Asthma: Knowledge Graph Analysis Based on CiteSpace (2001-2021). J Asthma Allergy 2023; 16:355-364. [PMID: 37041761 PMCID: PMC10083019 DOI: 10.2147/jaa.s402883] [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: 12/29/2022] [Accepted: 03/12/2023] [Indexed: 04/13/2023] Open
Abstract
Asthma is a common chronic inflammatory disease of the airway. Intestinal flora, a significant risk factor for asthma, has become a widespread concern in the pathogenesis of asthma. To review the literature related to intestinal flora in asthma, summarize research direction, and report trends, this study used CiteSpace to perform bibliometric statistics and analysis on the research papers of intestinal flora and asthma collected in the Web of science core collection from 2001 to 2021. Eventually, a total of 613 articles were included. The results demonstrated that research on gut flora and asthma continued to heat up, with article numbers increasing, especially in the last decade. Moreover, analysis of the keywords showed that the research topics of intestinal flora and asthma range from confirming the link between intestinal flora and asthma to investigating mechanisms and then to asthma treatment. According to the summary of research hotspots, we expand on three emerging issues that require attention in the intestinal flora and asthma research, including (regulatory T)Treg cells, probiotics, and chain fatty acid. Evidence illustrated that Treg cells play a crucial role in the pathogenesis of asthma caused by dysbiosis of the gut flora. Furthermore, in contrast to probiotic supplements, which do not reduce the risk of developing asthma, short-chain fatty acids supplements do. Overall, the research direction in the field of intestinal flora and asthma has recently evolved from macro to micro with depth broadened. As a robust scientific evaluation, our study provided a comprehensive overview of the area, particularly for research focus, which could more precisely direct scholars on future research and clinical diagnosis, therapy, and individualized prevention.
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Affiliation(s)
- Hang Zheng
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China
| | - Huan Dai
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China
| | - Xiumei Yan
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China
| | - Qiangwei Xiang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China
- Correspondence: Qiangwei Xiang, Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People’s Republic of China, Email
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Localized butyrate restores gut homeostasis. Nat Biomed Eng 2023; 7:3-5. [PMID: 36550306 DOI: 10.1038/s41551-022-00994-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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50
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Vasilyeva EF. [The regulatory role of gut microbiota in inflammation in depression and anxiety]. Zh Nevrol Psikhiatr Im S S Korsakova 2023; 123:33-39. [PMID: 37994886 DOI: 10.17116/jnevro202312311133] [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] [Indexed: 11/24/2023]
Abstract
Numerous studies have identified the important role of the gut microbiota in maintaining of the CNS normal functioning and in the pathogenesis of mental disorders as one of the systems regulating the bidirectional communication between the gut and the brain. The microbiota has been found to be involved in the modulation of inflammation as well as in the development and function of the immune and nervous systems. It is assumed that in multicellular organisms, the nervous and immune systems have evolved together with the microbiota, being in interaction with it, in order to optimize the body's ability to adapt to a wide range of environmental stresses in order to maintain the constancy of its homeostasis. Normally, microbes live in stable communities, while under conditions of even mild or chronic social stress, significant shifts in the composition of the microbiota occur, which lead to the development of dysbiosis associated with changes in microbiota metabolites, which can lead to the formation of physiology and behavior characteristic of stress and depression. Microbes influence the activation of peripheral immune cells that regulate the response to neuroinflammation, brain damage, autoimmune responses, and neurogenesis. The review provides a brief overview of the normal gut microbiota, describes the factors influencing the state of the microbiota, and also discusses recent discoveries concerning the regulatory effect of the gut microbiota on CNS functions, the immune system, and inflammation in the pathogenesis of depression and anxiety.
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