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Lu D, Zhang X, Ye H, Wang J, Han D. Milk-Derived Extracellular Vesicles Carrying ssc-let-7 c Alleviate Early Intestinal Inflammation and Regulate Macrophage Polarization via Targeting the PTEN-Mediated PI3K/Akt Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 39188059 DOI: 10.1021/acs.jafc.4c03155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
Milk-derived extracellular vesicles (mEVs) are beneficial to the health of infants. However, the effect of mEVs on early intestinal inflammation is not well established. Herein, weaned colitic mice were used to explore the potential effects and underlying mechanisms of porcine mEVs (pmEVs) on intestinal inflammation during early life. We found that pmEVs administration attenuated early life intestinal inflammation and promoted colonic barrier integrity in mice. The anti-inflammatory effect of pmEVs was achieved by shifting a proinflammatory macrophage (M1) toward an anti-inflammatory macrophage (M2). Moreover, pmEVs can be absorbed by macrophages and reduce proinflammatory polarization (stimulated by LPS) in vitro. Noteworthily, ssc-let-7c was found to be highly expressed in pmEVs that can regulate the polarization of macrophages by targeting the tensin homologue deleted on chromosome ten (PTEN), thereby activating the PI3K/Akt pathway. Collectively, our findings revealed a crucial role of mEVs in early intestinal immunity and its underlying mechanism.
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Affiliation(s)
- Dongdong Lu
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
- Adaptation Physiology Group, Department of Animal Science, Wageningen University& Research, Wageningen 6700 AH, The Netherlands
| | - Xiangyu Zhang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Hao Ye
- Adaptation Physiology Group, Department of Animal Science, Wageningen University& Research, Wageningen 6700 AH, The Netherlands
| | - Junjun Wang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Dandan Han
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
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2
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Wang S, Wang H, Liu J, Zhang X, Yang Y, Lu C, Cai C, Zhao Y, Liang G, Guo X, Li B, Cao G, Gao P. Expression patterns and functional analysis of porcine lnc-34015. Anim Biotechnol 2023; 34:2251-2261. [PMID: 35714975 DOI: 10.1080/10495398.2022.2085112] [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: 11/01/2022]
Abstract
Long noncoding RNAs (lncRNAs) play important roles in immune regulation in humans and animals. The lnc-34015 was discovered to be critical for the development of muscles, based on the muscle transcriptome of pigs; however, the underlying molecular mechanism requires better understanding. Here, the sequence characteristics of lnc-34015 were analyzed and a competitive endogenous RNA regulatory network of lncRNA was predicted. The developmental expression trend and tissue expression profiles of lnc-34015 were investigated using quantitative polymerase chain reaction. The lnc-34015 sequence is overlapped with introns 11 and 12 of CWF19L1, while CWF19L1, PKD2L1, and CHUK were identified as cis-regulatory genes of lnc-34015. Bioinformatics analyses revealed that lnc-34015 binds to 15 microRNAs (miRNAs), including miR-3646, miR-377-3p, and miR-190b-3p, to regulate downstream gene expression. GO and KEGG enrichment results show that lnc-34015 was mainly involved in cell proliferation, stress response, transcriptional regulation, and alternative splicing. The expression trend of lnc-34015 in muscle was similar to that of target genes and opposite to that of miRNAs. The expression of lnc-34015 was significantly higher in the porcine small intestine and IPEC-J2 cells. Our findings suggest that lnc-34015 regulates CHUK, ZBTB20, and XIAP gene expression by competing with endogenous RNAs to regulate porcine inflammatory responses.
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Affiliation(s)
- Shu Wang
- Department of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Haizhen Wang
- Department of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Juan Liu
- Department of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Xiaona Zhang
- Beijing Allwegene Technology Company, Transcriptional Regulation Division, Beijing, China
| | - Yang Yang
- Department of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Chang Lu
- Department of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Chunbo Cai
- Department of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Yan Zhao
- Department of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Guoming Liang
- Department of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Xiaohong Guo
- Department of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Bugao Li
- Department of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Guoqing Cao
- Department of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Pengfei Gao
- Department of Animal Sciences, Shanxi Agricultural University, Taigu, China
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Long D, Mao C, Zhang Z, Zou J, Zhu Y. Visual analysis of colorectal cancer and gut microbiota: A bibliometric analysis from 2002 to 2022. Medicine (Baltimore) 2023; 102:e35727. [PMID: 37933041 PMCID: PMC10627710 DOI: 10.1097/md.0000000000035727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 09/29/2023] [Indexed: 11/08/2023] Open
Abstract
A growing number of studies have shown that gut microbiota (GM) plays an essential role in the occurrence and development of colorectal cancer (CRC). The current body of research exploring the relationship between CRC and GM is vast. Nevertheless, bibliometric studies in this area have not yet been reported. This study aimed to explore the hotspots and frontiers of research on GM and CRC in the past 20 years, which may provide a reference for researchers in this field. The Web of Science Core Collection database was searched for publications on CRC and GM from 2002 to 2022. The scientometric softwares CiteSpace and VOSviewer were used to visually analyze the countries, institutions, authors, journals, and keywords involved in the literature. Keywords co-occurrence, cluster, and burst analysis were utilized to further explore the current state and development trends of research on GM and CRC. A total of 2158 publications were included in this study, with a noticeably rising annual publication trend. The majority of these papers are from 80 nations, primarily China and the USA. J Yu was the most active author and WS Garrett has the highest citation. Among all institutions, Shanghai Jiao Tong University has the largest number of papers. Most of the publications were published in the International Journal of Molecular Sciences, with Science being the most frequently cited journal. The 4 main clusters mainly involved probiotics, inflammation, molecular mechanisms, and research methods. Current research hotspots included "Fusobacterium nucleatum," "Escherichia coli," etc. Newly emerging research has focused predominantly on immune response, gene expression, and recent strategies for the treatment of CRC with GM. The relationship between GM and CRC will continue to be a hot research area. Changes in the composition of GM in patients with CRC, the potential molecular mechanisms as well as probiotics and natural products used in the treatment of CRC have been the focus of current research and hotspots for future studies.
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Affiliation(s)
- Dan Long
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Chenhan Mao
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Zhensheng Zhang
- The First Traditional Chinese Medicine Hospital of Zhanjiang City, Zhanjiang, Guangdong, China
| | - Junjun Zou
- The Second Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Ying Zhu
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
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Qi X, Zhang Y, Zhang Y, Luo F, Song K, Wang G, Ling F. Vitamin B 12 produced by Cetobacterium somerae improves host resistance against pathogen infection through strengthening the interactions within gut microbiota. MICROBIOME 2023; 11:135. [PMID: 37322528 PMCID: PMC10268390 DOI: 10.1186/s40168-023-01574-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 05/15/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Pathogen infections seriously affect host health, and the use of antibiotics increases the risk of the emergence of drug-resistant bacteria and also increases environmental and health safety risks. Probiotics have received much attention for their excellent ability to prevent pathogen infections. Particularly, explaining mechanism of action of probiotics against pathogen infections is important for more efficient and rational use of probiotics and the maintenance of host health. RESULTS Here, we describe the impacts of probiotic on host resistance to pathogen infections. Our findings revealed that (I) the protective effect of oral supplementation with B. velezensis against Aeromonas hydrophila infection was dependent on gut microbiota, specially the anaerobic indigenous gut microbe Cetobacterium; (II) Cetobacterium was a sensor of health, especially for fish infected with pathogenic bacteria; (III) the genome resolved the ability of Cetobacterium somerae CS2105-BJ to synthesize vitamin B12 de novo, while in vivo and in vitro metabolism assays also showed the ability of Cetobacterium somerae CS2105-BJ to produce vitamin B12; (IV) the addition of vitamin B12 significantly altered the gut redox status and the gut microbiome structure and function, and then improved the stability of the gut microbial ecological network, and enhanced the gut barrier tight junctions to prevent the pathogen infection. CONCLUSION Collectively, this study found that the effect of probiotics in enhancing host resistance to pathogen infections depended on function of B12 produced by an anaerobic indigenous gut microbe, Cetobacterium. Furthermore, as a gut microbial regulator, B12 exhibited the ability to strengthen the interactions within gut microbiota and gut barrier tight junctions, thereby improving host resistance against pathogen infection. Video Abstract.
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Affiliation(s)
- Xiaozhou Qi
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Yong Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Yilin Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Fei Luo
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Kaige Song
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Gaoxue Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China.
| | - Fei Ling
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China.
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Banerjee A, Somasundaram I, Das D, Jain Manoj S, Banu H, Mitta Suresh P, Paul S, Bisgin A, Zhang H, Sun XF, Duttaroy AK, Pathak S. Functional Foods: A Promising Strategy for Restoring Gut Microbiota Diversity Impacted by SARS-CoV-2 Variants. Nutrients 2023; 15:nu15112631. [PMID: 37299594 DOI: 10.3390/nu15112631] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/24/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
Natural herbs and functional foods contain bioactive molecules capable of augmenting the immune system and mediating anti-viral functions. Functional foods, such as prebiotics, probiotics, and dietary fibers, have been shown to have positive effects on gut microbiota diversity and immune function. The use of functional foods has been linked to enhanced immunity, regeneration, improved cognitive function, maintenance of gut microbiota, and significant improvement in overall health. The gut microbiota plays a critical role in maintaining overall health and immune function, and disruptions to its balance have been linked to various health problems. SARS-CoV-2 infection has been shown to affect gut microbiota diversity, and the emergence of variants poses new challenges to combat the virus. SARS-CoV-2 recognizes and infects human cells through ACE2 receptors prevalent in lung and gut epithelial cells. Humans are prone to SARS-CoV-2 infection because their respiratory and gastrointestinal tracts are rich in microbial diversity and contain high levels of ACE2 and TMPRSS2. This review article explores the potential use of functional foods in mitigating the impact of SARS-CoV-2 variants on gut microbiota diversity, and the potential use of functional foods as a strategy to combat these effects.
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Affiliation(s)
- Antara Banerjee
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Indumathi Somasundaram
- Department of Biotechnology Engineering, Kolhapur Institute of Technology's College of Engineering, Kolhapur 416012, Maharashtra, India
| | - Diptimayee Das
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Samatha Jain Manoj
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Husaina Banu
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Pavane Mitta Suresh
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Sujay Paul
- School of Engineering and Sciences, Tecnologico de Monterrey, Campus Queretaro, San Pablo 76130, Mexico
| | - Atil Bisgin
- Department of Medical Genetics, Medical Faculty, Cukurova University, Adana 01250, Turkey
| | - Hong Zhang
- Department of Medical Sciences, School of Medicine, Orebro University, SE-701 82 Orebro, Sweden
| | - Xiao-Feng Sun
- Division of Ocology, Department of Biomedical and Clinical Sciences, Linkoping University, SE-581 83 Linkoping, Sweden
| | - Asim K Duttaroy
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, 0313 Oslo, Norway
| | - Surajit Pathak
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), Kelambakkam, Chennai 603103, Tamil Nadu, India
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6
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Abot A, Fried S, Cani PD, Knauf C. Reactive Oxygen Species/Reactive Nitrogen Species as Messengers in the Gut: Impact on Physiology and Metabolic Disorders. Antioxid Redox Signal 2022; 37:394-415. [PMID: 34714099 DOI: 10.1089/ars.2021.0100] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Significance: The role of reactive oxygen/nitrogen species as "friend" or "foe" messengers in the whole body is well characterized. Depending on the concentration in the tissue considered, these molecular actors exert beneficial or deleterious impacts leading to a pathological state, as observed in metabolic disorders such as type 2 diabetes and obesity. Recent Advances: Among the tissues impacted by oxidation and inflammation in this pathological state, the intestine is a site of dysfunction that can establish diabetic symptoms, such as alterations in the intestinal barrier, gut motility, microbiota composition, and gut/brain axis communication. In the intestine, reactive oxygen/nitrogen species (from the host and/or microbiota) are key factors that modulate the transition from physiological to pathological signaling. Critical Issues: Controlling the levels of intestinal reactive oxygen/nitrogen species is a complicated balance between positive and negative impacts that is in constant equilibrium. Here, we describe the synthesis and degradation of intestinal reactive oxygen/nitrogen species and their interactions with the host. The development of novel redox-based therapeutics that alter these processes could restore intestinal health in patients with metabolic disorders. Future Directions: Deciphering the mode of action of reactive oxygen/nitrogen species in the gut of obese/diabetic patients could result in a future therapeutic strategy that combines nutritional and pharmacological approaches. Consequently, preventive and curative treatments must take into account one of the first sites of oxidative and inflammatory dysfunctions in the body, that is, the intestine. Antioxid. Redox Signal. 37, 394-415.
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Affiliation(s)
- Anne Abot
- Université Paul Sabatier, Toulouse III, INSERM U1220, Institut de Recherche en Santé Digestive (IRSD), CHU Purpan, Toulouse, France.,International Research Project (IRP), European Lab "NeuroMicrobiota," Brussels, Belgium and Toulouse, France
| | - Steven Fried
- Université Paul Sabatier, Toulouse III, INSERM U1220, Institut de Recherche en Santé Digestive (IRSD), CHU Purpan, Toulouse, France.,International Research Project (IRP), European Lab "NeuroMicrobiota," Brussels, Belgium and Toulouse, France
| | - Patrice D Cani
- International Research Project (IRP), European Lab "NeuroMicrobiota," Brussels, Belgium and Toulouse, France.,UCLouvain, Université Catholique de Louvain, Louvain Drug Research Institute, WELBIO, Walloon Excellence in Life Sciences and BIOtechnology, Metabolism and Nutrition Research Group, Brussels, Belgium
| | - Claude Knauf
- Université Paul Sabatier, Toulouse III, INSERM U1220, Institut de Recherche en Santé Digestive (IRSD), CHU Purpan, Toulouse, France.,International Research Project (IRP), European Lab "NeuroMicrobiota," Brussels, Belgium and Toulouse, France
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Zhang YW, Cao MM, Li YJ, Dai GC, Lu PP, Zhang M, Bai LY, Chen XX, Zhang C, Shi L, Rui YF. The regulative effect and repercussion of probiotics and prebiotics on osteoporosis: involvement of brain-gut-bone axis. Crit Rev Food Sci Nutr 2022; 63:7510-7528. [PMID: 35234534 DOI: 10.1080/10408398.2022.2047005] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Osteoporosis (OP) is a systemic disease characterized by decreased bone mass and degeneration of bone microstructure. In recent years, more and more researches have focused on the close relationship between gut microbiota (GM) and the occurrence and progression of OP, and the regulation of probiotics and prebiotics on bone metabolism has gradually become a research hotspot. Based on the influence of brain-gut-bone axis on bone metabolism, this review expounds the potential mechanisms of probiotics and prebiotics on OP from next perspectives: regulation of intestinal metabolites, regulation of intestinal epithelial barrier function, involvement of neuromodulation, involvement of immune regulation and involvement of endocrine regulation, so as to provide a novel and promising idea for the prevention and treatment of OP in the future.
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Affiliation(s)
- Yuan-Wei Zhang
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, P.R. China
- Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
| | - Mu-Min Cao
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, P.R. China
- Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
| | - Ying-Juan Li
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Department of Geriatrics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
| | - Guang-Chun Dai
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, P.R. China
- Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
| | - Pan-Pan Lu
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, P.R. China
- Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
| | - Ming Zhang
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, P.R. China
- Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
| | - Li-Yong Bai
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, P.R. China
- Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
| | - Xiang-Xu Chen
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, P.R. China
- Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
| | - Cheng Zhang
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, P.R. China
- Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
| | - Liu Shi
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, P.R. China
- Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
| | - Yun-Feng Rui
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
- Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, P.R. China
- Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, P.R. China
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8
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Yu X, Zhang Y, Xu F, Dong D, Wang W, Wu X. Screening of immune-enhancing Lactobacillus in mice by using a cell-line. J Microbiol Methods 2021; 192:106380. [PMID: 34813868 DOI: 10.1016/j.mimet.2021.106380] [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: 06/30/2021] [Revised: 11/17/2021] [Accepted: 11/17/2021] [Indexed: 10/19/2022]
Abstract
In this study, we found that it is possible to screen Lactobacillus strains that enhance the immune function of mice using HCT-8 cells. Lactobacillus were co-incubated with intestinal epithelial HCT-8 cells to detect and screen the strains that induced more interleukin-6 (IL-6) in the culture supernatant. Simultaneously, a mouse model of low immunity was established to administer the screened lactobacilli by gavage. After 4 weeks of continuous gavage, related cytokines in blood and immune cell indexes in organs were detected to comprehensively evaluate the feasibility of in vitro cell culture model for screening immune-enhancing strains. The content of IL-6 in the culture supernatant of HCT-8 cells induced by the three tested strains increased approximately 5, 8 and 15 fold compared with that of the control group. IL-6 content in serum of mice was significantly higher than that of the control group provided with cyclophosphamide (CTX). Lactobacillus paracasei ZLPC01 presented a higher ability to protect against the immune damage of CTX by decreasing the serum IgG level, increasing the transformation of mouse splenocytes, and the activity of NK cells. Furthermore, L. paracasei ZLPC01 increased cytokine content in serum (IL-6, IL-2, TNF-α and IFN-γ) and colon (IL-6 and TNF-α) in CTX-treated mice. Screening strains that enhance immunity via an in vitro cell-line is simple in operation, and the results are well correlated with those of animal experiments, which is feasible and effective in practice. In addition, L. paracasei ZLPC01 could have the potential to enhance the immunity of mice effectively through inducing intestinal cells to produce IL-6, TNF-α and other cytokines.
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Affiliation(s)
- Xiaomin Yu
- Jiangxi-Oai Joint Research institute, College of Basic Medicine, Nanchang University, Nanchang 330047, PR China
| | - Yu Zhang
- Jiangxi-Oai Joint Research institute, College of Basic Medicine, Nanchang University, Nanchang 330047, PR China
| | - Feng Xu
- Jiangxi-Oai Joint Research institute, College of Basic Medicine, Nanchang University, Nanchang 330047, PR China
| | - Degang Dong
- Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, P. R. China State
| | - Wanchun Wang
- College of Basic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, P. R. China State.
| | - Xiaoli Wu
- Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, P. R. China State.
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Wu S, Yin Y, Du L. Blood-Brain Barrier Dysfunction in the Pathogenesis of Major Depressive Disorder. Cell Mol Neurobiol 2021; 42:2571-2591. [PMID: 34637015 DOI: 10.1007/s10571-021-01153-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/01/2021] [Indexed: 12/11/2022]
Abstract
Major depression represents a complex and prevalent psychological disease that is characterized by persistent depressed mood, impaired cognitive function and complicated pathophysiological and neuroendocrine alterations. Despite the multifactorial etiology of depression, one of the most recent factors to be identified as playing a critical role in the development of depression is blood-brain barrier (BBB) disruption. The occurrence of BBB integrity disruption contributes to the disturbance of brain homeostasis and leads to complications of neurological diseases, such as stroke, chronic neurodegenerative disorders, neuroinflammatory disorders. Recently, BBB associated tight junction disruption has been shown to implicate in the pathophysiology of depression and contribute to increased susceptibility to depression. However, the underlying mechanisms and importance of BBB damage in depression remains largely unknown. This review highlights how BBB disruption regulates the depression process and the possible molecular mechanisms involved in development of depression-induced BBB dysfunction. Moreover, insight on promising therapeutic targets for treatment of depression with associated BBB dysfunctions are also discussed.
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Affiliation(s)
- Shusheng Wu
- Department of Immunology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Yuye Yin
- Department of Immunology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Longfei Du
- Department of Laboratory Medicine, Affiliated Hospital of Yangzhou University, Yangzhou, Jiangsu, China.
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10
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Hanslik KL, Marino KM, Ulland TK. Modulation of Glial Function in Health, Aging, and Neurodegenerative Disease. Front Cell Neurosci 2021; 15:718324. [PMID: 34531726 PMCID: PMC8439422 DOI: 10.3389/fncel.2021.718324] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/27/2021] [Indexed: 01/15/2023] Open
Abstract
In the central nervous system (CNS), glial cells, such as microglia and astrocytes, are normally associated with support roles including contributions to energy metabolism, synaptic plasticity, and ion homeostasis. In addition to providing support for neurons, microglia and astrocytes function as the resident immune cells in the brain. The glial function is impacted by multiple aspects including aging and local CNS changes caused by neurodegeneration. During aging, microglia and astrocytes display alterations in their homeostatic functions. For example, aged microglia and astrocytes exhibit impairments in the lysosome and mitochondrial function as well as in their regulation of synaptic plasticity. Recent evidence suggests that glia can also alter the pathology associated with many neurodegenerative disorders including Alzheimer's disease (AD) and Parkinson's disease (PD). Shifts in the microbiome can impact glial function as well. Disruptions in the microbiome can lead to aberrant microglial and astrocytic reactivity, which can contribute to an exacerbation of disease and neuronal dysfunction. In this review, we will discuss the normal physiological functions of microglia and astrocytes, summarize novel findings highlighting the role of glia in aging and neurodegenerative diseases, and examine the contribution of microglia and astrocytes to disease progression.
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Affiliation(s)
- Kendra L. Hanslik
- Neuroscience Training Program, University of Wisconsin, Madison, WI, United States
| | - Kaitlyn M. Marino
- Neuroscience Training Program, University of Wisconsin, Madison, WI, United States
| | - Tyler K. Ulland
- Neuroscience Training Program, University of Wisconsin, Madison, WI, United States
- Department of Pathology and Laboratory Medicine, University of Wisconsin, Madison, WI, United States
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11
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Zhang YW, Li YJ, Lu PP, Dai GC, Chen XX, Rui YF. The modulatory effect and implication of gut microbiota on osteoporosis: from the perspective of "brain-gut-bone" axis. Food Funct 2021; 12:5703-5718. [PMID: 34048514 DOI: 10.1039/d0fo03468a] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Osteoporosis (OP) is a kind of systemic metabolic disease characterized by decreased bone mass and destruction of the bone microstructure. In recent years, it has become an expected research trend to explore the cross-linking relationship in the pathogenesis process of OP so as to develop reasonable and effective intervention strategies. With the further development of intestinal microbiology and the profound exploration of the gut microbiota (GM), it has been further revealed that the "brain-gut" axis may be a potential target for the bone, thereby affecting the occurrence and progression of OP. Hence, based on the concept of "brain-gut-bone" axis, we look forward to deeply discussing and summarizing the cross-linking relationship of OP in the next three parts, including the "brain-bone" connection, "gut-bone" connection, and "brain-gut" connection, so as to provide an emerging thought for the prevention strategies and mechanism researches of OP.
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Affiliation(s)
- Yuan-Wei Zhang
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China. and Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China and School of Medicine, Southeast University, Nanjing, Jiangsu, China and Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, China and Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Ying-Juan Li
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China and Department of Geriatrics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Pan-Pan Lu
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China. and Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China and School of Medicine, Southeast University, Nanjing, Jiangsu, China and Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, China and Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Guang-Chun Dai
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China. and Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China and School of Medicine, Southeast University, Nanjing, Jiangsu, China and Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, China and Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Xiang-Xu Chen
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China. and Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China and School of Medicine, Southeast University, Nanjing, Jiangsu, China and Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, China and Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Yun-Feng Rui
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China. and Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China and School of Medicine, Southeast University, Nanjing, Jiangsu, China and Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, China and Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
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12
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Sun L, Gang X, Li Z, Zhao X, Zhou T, Zhang S, Wang G. Advances in Understanding the Roles of CD244 (SLAMF4) in Immune Regulation and Associated Diseases. Front Immunol 2021; 12:648182. [PMID: 33841431 PMCID: PMC8024546 DOI: 10.3389/fimmu.2021.648182] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 02/24/2021] [Indexed: 12/16/2022] Open
Abstract
Proteins in the signaling lymphocytic activating molecule (SLAM) family play crucial roles in regulating the immune system. CD244 (SLAMF4) is a protein in this family, and is also a member of the CD2 subset of the immunoglobulin (Ig) superfamily. CD244 is a cell surface protein expressed by NK cells, T cells, monocytes, eosinophils, myeloid-derived suppressor cells, and dendritic cells. CD244 binds to the ligand CD48 on adjacent cells and transmits stimulatory or inhibitory signals that regulate immune function. In-depth studies reported that CD244 functions in many immune-related diseases, such as autoimmune diseases, infectious diseases, and cancers, and its action is essential for the onset and progression of these diseases. The discovery of these essential roles of CD244 suggests it has potential as a prognostic indicator or therapeutic target. This review describes the molecular structure and function of CD244 and its roles in various immune cells and immune-related diseases.
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Affiliation(s)
| | | | | | | | | | | | - Guixia Wang
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
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13
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Hu J, Zhang L, Lin W, Tang W, Chan FKL, Ng SC. Review article: Probiotics, prebiotics and dietary approaches during COVID-19 pandemic. Trends Food Sci Technol 2020; 108:187-196. [PMID: 33519087 PMCID: PMC7833886 DOI: 10.1016/j.tifs.2020.12.009] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 11/11/2020] [Accepted: 12/10/2020] [Indexed: 02/07/2023]
Abstract
Background Patients with COVID-19 caused by SARS-CoV-2 exhibit diverse clinical manifestations and severity including enteric involvement. Commensal gut bacteria can contribute to defense against potential pathogens by promoting beneficial immune interactions. Interventions targeting the gut microbiome may have systemic anti-viral effects in SARS-CoV-2 infection. Scope and approach To summarise alterations of gut microbiota in patients with COVID-19 including impact of specific bacteria on disease severity, discuss current knowledge on the role of probiotics, prebiotics and dietary approaches including vitamin D in preventing and reducing disease susceptibility and review clinical studies using probiotics to target coronavirus. A literature review on SARS-CoV-2, COVID-19, gut microbiome and immunity was undertaken and relevant literature was summarised and critically examined. Key findings and conclusions Integrity of gut microbiome was perturbed in SARS-CoV-2 infections and associated with disease severity. Poor prognosis in SARS-CoV-2 infection was observed in subjects with underlying co-morbidities who had increased gut permeability and reduced gut microbiome diversity. Dietary microbes, including probiotics or selected prebiotics of Chinese origin, had anti-viral effects against other forms of coronavirus, and could positively impact host immune functions during SARS-CoV-2 infection. Numerous studies are investigating the role of probiotics in preventing and reducing susceptibility to SARS-CoV-2 infection in healthcare workers, household contacts and affected patients. An approach to strengthen intestinal barrier and lower pro-inflammatory states by adopting a more diversified diet during COVID-19 pandemic. SARS-CoV-2 infection is associated with immune dysfunction and gut microbiota alterations. Delineating mechanisms of probiotics, prebiotics and diet with anti-SARS-CoV-2 immunity present opportunities for discovery of microbial therapeutics to prevent and treat COVID-19. SARS-CoV-2 infection resulted in immune dysfunction and gut microbiota alterations. Probiotics or prebiotics could improve host immune functions during the infection. Enhance gut barrier by diversified diet was recommended during COVID-19 pandemic.
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Affiliation(s)
- Jielun Hu
- Center for Gut Microbiota Research, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China.,Institute of Digestive Disease, State Key Laboratory of Digestive Disease, LKS Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China.,State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Nanchang University, Nanchang, China
| | - Lin Zhang
- Center for Gut Microbiota Research, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China.,Institute of Digestive Disease, State Key Laboratory of Digestive Disease, LKS Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Winnie Lin
- Center for Gut Microbiota Research, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China.,Institute of Digestive Disease, State Key Laboratory of Digestive Disease, LKS Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China.,Microbiota I-Center (MagIC) Limited, The Chinese University of Hong Kong, Hong Kong, China
| | - Whitney Tang
- Center for Gut Microbiota Research, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China.,Institute of Digestive Disease, State Key Laboratory of Digestive Disease, LKS Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Francis K L Chan
- Center for Gut Microbiota Research, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China.,Institute of Digestive Disease, State Key Laboratory of Digestive Disease, LKS Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China.,Microbiota I-Center (MagIC) Limited, The Chinese University of Hong Kong, Hong Kong, China
| | - Siew C Ng
- Center for Gut Microbiota Research, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China.,Institute of Digestive Disease, State Key Laboratory of Digestive Disease, LKS Institute of Health Science, The Chinese University of Hong Kong, Hong Kong, China.,Microbiota I-Center (MagIC) Limited, The Chinese University of Hong Kong, Hong Kong, China
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14
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Good M, Chu T, Shaw P, McClain L, Chamberlain A, Castro C, Rimer JM, Mihi B, Gong Q, Nolan LS, Cooksey K, Linneman L, Agrawal P, Finegold DN, Peters D. Global hypermethylation of intestinal epithelial cells is a hallmark feature of neonatal surgical necrotizing enterocolitis. Clin Epigenetics 2020; 12:190. [PMID: 33308304 PMCID: PMC7730811 DOI: 10.1186/s13148-020-00983-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 11/17/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Necrotizing enterocolitis (NEC) remains one of the overall leading causes of death in premature infants, and the pathogenesis is unpredictable and not well characterized. The aim of our study was to determine the molecular phenotype of NEC via transcriptomic and epithelial cell-specific epigenomic analysis, with a specific focus on DNA methylation. METHODS Using laser capture microdissection, epithelial cell-specific methylation signatures were characterized by whole-genome bisulfite sequencing of ileal and colonic samples at the time of surgery for NEC and after NEC had healed at reanastomosis (n = 40). RNA sequencing was also performed to determine the transcriptomic profile of these samples, and a comparison was made to the methylome data. RESULTS We found that surgical NEC has a considerable impact on the epigenome by broadly increasing DNA methylation levels, although these effects are less pronounced in genomic regions associated with the regulation of gene expression. Furthermore, NEC-related DNA methylation signatures were influenced by tissue of origin, with significant differences being noted between colon and ileum. We also identified numerous transcriptional changes in NEC and clear associations between gene expression and DNA methylation. CONCLUSIONS We have defined the intestinal epigenomic and transcriptomic signatures during surgical NEC, which will advance our understanding of disease pathogenesis and may enable the development of novel precision medicine approaches for NEC prediction, diagnosis and phenotyping.
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Affiliation(s)
- Misty Good
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA.
| | - Tianjiao Chu
- Departments of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh, 204 Craft Avenue, Pittsburgh, PA, 15213, USA
- Magee-Womens Research Institute, Pittsburgh, PA, USA
| | - Patricia Shaw
- Magee-Womens Research Institute, Pittsburgh, PA, USA
| | - Lora McClain
- Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA
| | - Austin Chamberlain
- Magee-Womens Research Institute, Pittsburgh, PA, USA
- PathGroup, Brentwood, TN, USA
| | - Carlos Castro
- Magee-Womens Research Institute, Pittsburgh, PA, USA
| | - Jamie M Rimer
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | - Belgacem Mihi
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | - Qingqing Gong
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | - Lila S Nolan
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | - Krista Cooksey
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | - Laura Linneman
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | - Pranjal Agrawal
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine/St. Louis Children's Hospital, 660 S. Euclid Ave. Campus, Box 8208, St. Louis, MO, 63110, USA
| | | | - David Peters
- Departments of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh, 204 Craft Avenue, Pittsburgh, PA, 15213, USA.
- Human Genetics, University of Pittsburgh, Pittsburgh, PA, USA.
- Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA.
- Magee-Womens Research Institute, Pittsburgh, PA, USA.
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15
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Vandereyken M, James OJ, Swamy M. Mechanisms of activation of innate-like intraepithelial T lymphocytes. Mucosal Immunol 2020; 13:721-731. [PMID: 32415229 PMCID: PMC7434593 DOI: 10.1038/s41385-020-0294-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 04/09/2020] [Accepted: 04/11/2020] [Indexed: 02/04/2023]
Abstract
Intraepithelial T lymphocytes (T-IEL) contain subsets of innate-like T cells that evoke innate and adaptive immune responses to provide rapid protection at epithelial barrier sites. In the intestine, T-IEL express variable T cell antigen receptors (TCR), with unknown antigen specificities. Intriguingly, they also express multiple inhibitory receptors, many of which are normally found on exhausted or antigen-experienced T cells. This pattern suggests that T-IEL are antigen-experienced, yet it is not clear where, and in what context, T-IEL encounter TCR ligands. We review recent evidence indicating TCR antigens for intestinal innate-like T-IEL are found on thymic or intestinal epithelium, driving agonist selection of T-IEL. We explore the contributions of the TCR and various co-stimulatory and co-inhibitory receptors in activating T-IEL effector functions. The balance between inhibitory and activating signals may be key to keeping these highly cytotoxic, rapidly activated cells in check, and key to harnessing their immune surveillance potential.
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Affiliation(s)
- Maud Vandereyken
- MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee, DD1 5EH, UK
| | - Olivia J James
- MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee, DD1 5EH, UK
| | - Mahima Swamy
- MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee, DD1 5EH, UK.
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16
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Xiaoyu P, Chao G, Lihua D, Pengyu C. Gut bacteria affect the tumoral immune milieu: distorting the efficacy of immunotherapy or not?. Gut Microbes 2020; 11:691-705. [PMID: 32216675 PMCID: PMC7524336 DOI: 10.1080/19490976.2020.1739794] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/02/2020] [Accepted: 02/28/2020] [Indexed: 02/08/2023] Open
Abstract
Immunotherapy using immune-checkpoint inhibitors is revolutionizing oncotherapy. However, the application of immunotherapy may be restricted because of the lack of proper biomarkers in a portion of cancer patients. Recently, emerging evidence has revealed that gut commensal bacteria can impact the therapeutic efficacy of immune-checkpoint inhibitors in several cancer models. In addition, testing the composition of gut bacteria provides context for prediction of the efficacy and toxicity of immunotherapy. In this review, we discuss the impacts of gut commensal bacteria on the tumoral immune milieu, highlighting some typical bacteria and their associations with immunotherapy.
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Affiliation(s)
- Pu Xiaoyu
- Department of Radiation Oncology & Therapy, Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun, China
| | - Ge Chao
- Department of Radiation Oncology & Therapy, Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun, China
| | - Dong Lihua
- Department of Radiation Oncology & Therapy, Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun, China
- NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun, China
| | - Chang Pengyu
- Department of Radiation Oncology & Therapy, Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun, China
- Key Laboratory of Organ Regeneration & Transplantation of the Ministry of Education, Department of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun, China
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17
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Facing a new challenge: the adverse effects of antibiotics on gut microbiota and host immunity. Chin Med J (Engl) 2019; 132:1135-1138. [PMID: 30973451 PMCID: PMC6511407 DOI: 10.1097/cm9.0000000000000245] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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18
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Crosstalk between the Ketogenic Diet and Epilepsy: From the Perspective of Gut Microbiota. Mediators Inflamm 2019; 2019:8373060. [PMID: 31281229 PMCID: PMC6589192 DOI: 10.1155/2019/8373060] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 05/23/2019] [Indexed: 12/18/2022] Open
Abstract
Given the association between a range of neurological disorders and changes in the gut microbiota, interest in the gut microbiota has recently increased. In particular, the significant involvement of the autoimmune processes in the development of epilepsy, one of the most serious and widespread neurological diseases, has led to a suggested link with the gut microbiome. Because the constitution of the gut microbiome can be influenced by diet, dietary therapy has been shown to have a positive impact on a wide range of conditions via alteration of the gut microbiota. An example of one such diet is the ketogenic diet (KD), which promotes a diet that contains high levels of fat, adequate levels of protein, and low levels of carbohydrate. Due to the near-total elimination of carbohydrates from the individual's food in this ultra-high-fat diet, ketone bodies become an important source of energy. Although the ketogenic diet has proven successful in the treatment of refractory epilepsy and other illnesses, the underlying mechanisms of its neuroprotective effects have yet to be fully elucidated. Nevertheless, recent studies strongly indicate a role for the gut microbiota in the effective treatment of epilepsy with the ketogenic diet. The latest advances regarding the links between the ketogenic diet, gut microbiota, and epilepsy are reviewed in this article, with a particular focus on the role of the gut microbiota in the treatment outcome.
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19
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Lutter L, Hoytema van Konijnenburg DP, Brand EC, Oldenburg B, van Wijk F. The elusive case of human intraepithelial T cells in gut homeostasis and inflammation. Nat Rev Gastroenterol Hepatol 2018; 15:637-649. [PMID: 29973676 DOI: 10.1038/s41575-018-0039-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The epithelial barrier of the gastrointestinal tract is home to numerous intraepithelial T cells (IETs). IETs are functionally adapted to the mucosal environment and are among the first adaptive immune cells to encounter microbial and dietary antigens. They possess hallmark features of tissue-resident T cells: they are long-lived nonmigratory cells capable of rapidly responding to antigen challenges independent of T cell recruitment from the periphery. Gut-resident T cells have been implicated in the relapsing and remitting course and persisting low-grade inflammation of chronic gastrointestinal diseases, including IBD and coeliac disease. So far, most data IETs have been derived from experimental animal models; however, IETs and the environmental makeup differ between mice and humans. With advances in techniques, the number of human studies has grown exponentially in the past 5 years. Here, we review the literature on the involvement of human IETs in gut homeostasis and inflammation, and how these cells are influenced by the microbiota and dietary antigens. Finally, targeting of IETs in therapeutic interventions is discussed. Broad insight into the function and role of human IETs in gut homeostasis and inflammation is essential to identify future diagnostic, prognostic and therapeutic strategies.
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Affiliation(s)
- Lisanne Lutter
- Laboratory of Translational Immunology, Department of Pediatric Immunology, University Medical Center Utrecht, Utrecht, Netherlands.,Department of Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht, Netherlands
| | - David P Hoytema van Konijnenburg
- Laboratory of Translational Immunology, Department of Pediatric Immunology, University Medical Center Utrecht, Utrecht, Netherlands.,Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY, USA
| | - Eelco C Brand
- Laboratory of Translational Immunology, Department of Pediatric Immunology, University Medical Center Utrecht, Utrecht, Netherlands.,Department of Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Bas Oldenburg
- Department of Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Femke van Wijk
- Laboratory of Translational Immunology, Department of Pediatric Immunology, University Medical Center Utrecht, Utrecht, Netherlands.
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20
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Abstract
The microbiome has received increasing attention over the last 15 years. Although gut microbes have been explored for several decades, investigations of the role of microorganisms that reside in the human gut has attracted much attention beyond classical infectious diseases. For example, numerous studies have reported changes in the gut microbiota during not only obesity, diabetes, and liver diseases but also cancer and even neurodegenerative diseases. The human gut microbiota is viewed as a potential source of novel therapeutics. Between 2013 and 2017, the number of publications focusing on the gut microbiota was, remarkably, 12 900, which represents four-fifths of the total number of publications over the last 40 years that investigated this topic. This review discusses recent evidence of the impact of the gut microbiota on metabolic disorders and focus on selected key mechanisms. This review also aims to provide a critical analysis of the current knowledge in this field, identify putative key issues or problems and discuss misinterpretations. The abundance of metagenomic data generated on comparing diseased and healthy subjects can lead to the erroneous claim that a bacterium is causally linked with the protection or the onset of a disease. In fact, environmental factors such as dietary habits, drug treatments, intestinal motility and stool frequency and consistency are all factors that influence the composition of the microbiota and should be considered. The cases of the bacteria Prevotella copri and Akkermansia muciniphila will be discussed as key examples.
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Affiliation(s)
- Patrice D Cani
- Metabolism and Nutrition Research Group, Université catholique de Louvain, WELBIO-Walloon Excellence in Life Sciences and BIOtechnology, Louvain Drug Research Institute, Brussels, Belgium
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21
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Spichak S, Guzzetta KE, O’Leary OF, Clarke G, Dinan TG, Cryan JF. Without a bug’s life: Germ-free rodents to interrogate microbiota-gut-neuroimmune interactions. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.ddmod.2019.08.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Multifaceted Defense against Listeria monocytogenes in the Gastro-Intestinal Lumen. Pathogens 2017; 7:pathogens7010001. [PMID: 29271903 PMCID: PMC5874727 DOI: 10.3390/pathogens7010001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 12/18/2017] [Accepted: 12/20/2017] [Indexed: 02/07/2023] Open
Abstract
Listeria monocytogenes is a foodborne pathogen that can cause febrile gastroenteritis in healthy subjects and systemic infections in immunocompromised individuals. Despite the high prevalence of L. monocytogenes in the environment and frequent contamination of uncooked meat and poultry products, infections with this pathogen are relatively uncommon, suggesting that protective defenses in the general population are effective. In the mammalian gastrointestinal tract, a variety of defense mechanisms prevent L. monocytogenes growth, epithelial penetration and systemic dissemination. Among these defenses, colonization resistance mediated by the gut microbiota is crucial in protection against a range of intestinal pathogens, including L. monocytogenes. Here we review defined mechanisms of defense against L. monocytogenes in the lumen of the gastro-intestinal tract, with particular emphasis on protection conferred by the autochthonous microbiota. We suggest that selected probiotic species derived from the microbiota may be developed for eventual clinical use to enhance resistance against L. monocytogenes infections.
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