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Khoo SC, Zhang N, Luang-In V, Goh MS, Sonne C, Ma NL. Exploring environmental exposomes and the gut-brain nexus: Unveiling the impact of pesticide exposure. ENVIRONMENTAL RESEARCH 2024; 250:118441. [PMID: 38350544 DOI: 10.1016/j.envres.2024.118441] [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: 07/17/2023] [Revised: 01/20/2024] [Accepted: 02/06/2024] [Indexed: 02/15/2024]
Abstract
This review delves into the escalating concern of environmental pollutants and their profound impact on human health in the context of the modern surge in global diseases. The utilisation of chemicals in food production, which results in residues in food, has emerged as a major concern nowadays. By exploring the intricate relationship between environmental pollutants and gut microbiota, the study reveals a dynamic bidirectional interplay, as modifying microbiota profile influences metabolic pathways and subsequent brain functions. This review will first provide an overview of potential exposomes and their effect to gut health. This paper is then emphasis the connection of gut brain function by analysing microbiome markers with neurotoxicity responses. We then take pesticide as example of exposome to elucidate their influence to biomarkers biosynthesis pathways and subsequent brain functions. The interconnection between neuroendocrine and neuromodulators elements and the gut-brain axis emerges as a pivotal factor in regulating mental health and brain development. Thus, manipulation of gut microbiota function at the onset of stress may offer a potential avenue for the prevention and treatment for mental disorder and other neurodegenerative illness.
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Affiliation(s)
- Shing Ching Khoo
- Biological Security and Sustainability (BioSES) Research Interest Group, Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Nan Zhang
- Synerk Biotech, BioBay, Suzhou, 215000, China; Neuroscience Program, Department of Neurology, Houston Methodist Research Institute, TX, 77030, USA; Department of Neurology, Weill Cornell Medicine, New York, 10065, USA
| | - Vijitra Luang-In
- Natural Antioxidant Innovation Research Unit, Department of Biotechnology, Faculty of Technology, Mahasarakham University, Khamriang, Kantharawichai, Mahasarakham, 44150, Thailand
| | - Meng Shien Goh
- Biological Security and Sustainability (BioSES) Research Interest Group, Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Christian Sonne
- Aarhus University, Faculty of Science and Technology, Department of Bioscience, Arctic Research Centre (ARC), Danish Centre for Environment and Energy (DCE), Frederiksborgvej 399, PO Box 358, DK-4000, Roskilde, Denmark
| | - Nyuk Ling Ma
- Biological Security and Sustainability (BioSES) Research Interest Group, Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia; Center for Global Health Research (CGHR), Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, India.
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Li H, Sheng D, Jin C, Zhao G, Zhang L. Identifying and ranking causal microbial biomarkers for colorectal cancer at different cancer subsites and stages: a Mendelian randomization study. Front Oncol 2023; 13:1224705. [PMID: 37538123 PMCID: PMC10395834 DOI: 10.3389/fonc.2023.1224705] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 06/26/2023] [Indexed: 08/05/2023] Open
Abstract
Introduction The gut microbiome is directly involved in colorectal carcinogenesis, but much of the epidemiological evidence for the effect of the gut microbiome on colorectal cancer (CRC) risk comes from observational studies, and it is unclear whether identified microbial alterations are the cause or consequence of CRC development. Methods Univariate Mendelian randomization (MR) analysis and multivariate MR analysis based on Bayesian model averaging were performed to comprehensively explore the microbial risk factors associated with CRC. The Network Module Structure Shift method was used to identify microbial biomarkers associated with CRC. Mediation analysis was used to explore the dietary habits-microbiota-CRC pathway. Results The results of the four methods showed that 9 bacteria had a robust causal relationship with the development of CRC. Among them, Streptococcus thermophilus reduced the risk of CRC; Eubacterium ventriosum and Streptococcus were beneficial bacteria of malignant tumors of colon (CC); Erysipelotrichaceae was a protective factor for malignant tumors of rectal (CR); Bacteroides ovatus was a risk factor for benign tumors. Finally, the mediation analysis revealed 10 pathways by which dietary regulation bacteria affected the risk of CRC, including alcohol consumption increased the risk of CC by reducing the abundance of Eubacterium ventriosum (mediated proportion: 43.044%), and the mediated proportion of other pathways was 7.026%-34.22%. Discussion These findings will contribute to the understanding of the different carcinogenic mechanisms of intestinal flora in the colon and rectum and the risk of tumor transformation, thereby aiding CRC prevention, early screening, and the development of future strategies to reduce CRC risk.
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Affiliation(s)
- Hongfeng Li
- Department of Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
- Microbiome-X, National Institute of Health Data Science of China, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Dashuang Sheng
- Department of Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
- Microbiome-X, National Institute of Health Data Science of China, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Chuandi Jin
- Department of Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
- Microbiome-X, National Institute of Health Data Science of China, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Guoping Zhao
- Department of Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
- Microbiome-X, National Institute of Health Data Science of China, Cheeloo College of Medicine, Shandong University, Jinan, China
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
- CAS Key Laboratory of Computational Biology, Bio-Med Big Data Center, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Lei Zhang
- Department of Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
- Microbiome-X, National Institute of Health Data Science of China, Cheeloo College of Medicine, Shandong University, Jinan, China
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
- Shandong Children’s Microbiome Center, Children’s Hospital Affiliated to Shandong University, Jinan, China
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Zhao W, Han Q, Yang R, Wen W, Deng Z, Li H, Zheng Z, Ma Z, Yu G. Exposure to cadmium induced gut antibiotic resistance genes (ARGs) and microbiota alternations of Babylonia areolata. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 865:161243. [PMID: 36587667 DOI: 10.1016/j.scitotenv.2022.161243] [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: 09/02/2022] [Revised: 12/21/2022] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
Cadmium (Cd) is widely distributed in aquatic environments and has multiple adverse effects on aquatic organisms such as the ivory shell (Babylonia areolata). However, its effects on antibiotic resistance genes (ARGs) and gut microbiota of B. areolata remain unclear. In this study, we explored the effects of different concentrations (0, 0.03, 0.18 and 1.08 mg/L) of Cd on intestinal microbial communities and ARGs in B. areolata through 16S rRNA gene sequencing and high-throughput quantitative PCR. The results showed that the structure and diversity of ARGs and microbiota in B. areolata gut were altered upon Cd exposure. Tetracycline, Vancomycin and Macrolide-Lincosamide-Streptogramin B (MLSB) resistance genes were identified as the major ARGs in B. areolata gut. The absolute abundance and alpha diversity of ARGs in B. areolata gut increased with the rise of cadmium concentration. The microbial communities at genus level were enriched in the low and medium Cd concentration groups, while decreased in the high Cd concentration group compared to the control groups. In addition, the influence of microbiota on the ARG profile was more significant than that of Cd concentration and MGEs in B. areolata gut. Null model analysis demonstrated that stochastic processes dominated ARG assembly in the Cd-exposed groups and were enhanced with the increasing Cd concentrations. Four opportunistic bacterial pathogens (Bacteroides, Legionella, Acinetobacter and Escherichia) detected in B. areolata gut maybe the potential hosts of ARGs. Our findings provide references for the hazards assessment of environmental Cd exposure of gut microbiome in aquatic animals.
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Affiliation(s)
- Wang Zhao
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Sanya Tropical Fisheries Research Institute, Sanya 572018, China; Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Lingshui 572426, China; School of Marine Sciences, Ningbo University, Ningbo 315823, China
| | - Qian Han
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Rui Yang
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Sanya Tropical Fisheries Research Institute, Sanya 572018, China; Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Lingshui 572426, China
| | - Weigeng Wen
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Sanya Tropical Fisheries Research Institute, Sanya 572018, China; Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Lingshui 572426, China
| | - Zhenghua Deng
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Sanya Tropical Fisheries Research Institute, Sanya 572018, China; Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Lingshui 572426, China
| | - Huan Li
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Zhongming Zheng
- School of Marine Sciences, Ningbo University, Ningbo 315823, China
| | - Zhenhua Ma
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Sanya Tropical Fisheries Research Institute, Sanya 572018, China; Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Lingshui 572426, China.
| | - Gang Yu
- Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Sanya Tropical Fisheries Research Institute, Sanya 572018, China; Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Lingshui 572426, China.
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Wang JS, Liu JC. Intestinal microbiota in the treatment of metabolically associated fatty liver disease. World J Clin Cases 2022; 10:11240-11251. [PMID: 36387806 PMCID: PMC9649557 DOI: 10.12998/wjcc.v10.i31.11240] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/07/2022] [Accepted: 09/27/2022] [Indexed: 02/05/2023] Open
Abstract
Metabolically associated fatty liver disease (MAFLD) is a common cause of chronic liver disease, the hepatic manifestation of metabolic syndrome. Despite the increasing incidence of MAFLD, no effective treatment is available. Recent research indicates a link between the intestinal microbiota and liver diseases such as MAFLD. The composition and characteristics of the intestinal microbiota and therapeutic perspectives of MAFLD are reviewed in the current study. An imbalance in the intestinal microbiota increases intestinal permeability and exposure of the liver to adipokines. Furthermore, we focused on reviewing the latest "gut-liver axis" targeted therapy.
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Affiliation(s)
- Ji-Shuai Wang
- Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
| | - Jin-Chun Liu
- Department of Gastroenterology, The First Hospital of Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
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Derivatives of Plastics as Potential Carcinogenic Factors: The Current State of Knowledge. Cancers (Basel) 2022; 14:cancers14194637. [PMID: 36230560 PMCID: PMC9562888 DOI: 10.3390/cancers14194637] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/14/2022] [Accepted: 09/20/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Nowadays, micro- and nanoplastic particles can be found almost everywhere, being especially harmful for humans. Their absorption, primarily via inhalation and digestive routes, might lead to a particularly dangerous accumulation of those substances within the human body. Due to the alarming increase in contamination worldwide and excessive production of plastics and synthetic materials, there is an urgent need to investigate the effects of those substances on human health. So far, it has been observed that nano- and microplastics might be extremely harmful, leading to serious health conditions, such as cancers of various human body systems. Abstract Micro- and nanoplatics have been already reported to be potential carcinogenic/mutagenic substances that might cause DNA damage, leading to carcinogenesis. Thus, the effects of micro- and nanoplastics exposure on human health are currently being investigated extensively to establish clear relationships between those substances and health consequences. So far, it has been observed that there exists a definite correlation between exposure to micro- and nanoplastic particles and the onset of several cancers. Therefore, we have conducted research using PubMed, Web of Science, and Scopus databases, searching for all the research papers devoted to cancers that could be potentially related to the subject of exposure to nano- and microplastics. Ultimately, in this paper, we have discussed several cancers, including hepatocellular carcinoma, pancreatic cancer, pancreatic ductal adenocarcinoma, biliary tract cancer, and some endocrine-related cancers.
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Huang Z, Weng Y, Shen Q, Zhao Y, Jin Y. Microplastic: A potential threat to human and animal health by interfering with the intestinal barrier function and changing the intestinal microenvironment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 785:147365. [PMID: 33933760 DOI: 10.1016/j.scitotenv.2021.147365] [Citation(s) in RCA: 87] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/20/2021] [Accepted: 04/22/2021] [Indexed: 05/07/2023]
Abstract
Plastics are widely used in many fields due to their stable physical and chemical properties, and their global production and usage increase significantly every year, which leads to the accumulation of microplastics in the entire ecosystem. Numerous studies have shown that microplastics (MPs) have harmful effects on living organisms. This review aims to provide a comprehensive conclusion of the current knowledge of the impacts of MPs on the stability of the gut microenvironment, especially on the gut barrier. Studies showed that exposure to MPs could cause oxidative damage and inflammation in the gut, as well as the destruction of the gut epithelium, reduction of the mucus layer, microbial disorders, and immune cell toxicity. Although there are few reports directly related to humans, we hoped that this review could bring together more and more evidence that exposure to MPs results in disturbances of the intestinal microenvironment. Therefore, it is necessary to investigate their threats to human health further.
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Affiliation(s)
- Zhuizui Huang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - You Weng
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Qichen Shen
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yao Zhao
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yuanxiang Jin
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China.
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Screening of Human Gut Bacterial Culture Collection Identifies Species That Biotransform Quercetin into Metabolites with Anticancer Properties. Int J Mol Sci 2021; 22:ijms22137045. [PMID: 34208885 PMCID: PMC8269047 DOI: 10.3390/ijms22137045] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/23/2021] [Accepted: 06/25/2021] [Indexed: 12/19/2022] Open
Abstract
We previously demonstrated that flavonoid metabolites inhibit cancer cell proliferation through both CDK-dependent and -independent mechanisms. The existing evidence suggests that gut microbiota is capable of flavonoid biotransformation to generate bioactive metabolites including 2,4,6-trihydroxybenzoic acid (2,4,6-THBA), 3,4-dihydroxybenzoic acid (3,4-DHBA), 3,4,5-trihyroxybenzoic acid (3,4,5-THBA) and 3,4-dihydroxyphenylacetic acid (DOPAC). In this study, we screened 94 human gut bacterial species for their ability to biotransform flavonoid quercetin into different metabolites. We demonstrated that five of these species were able to degrade quercetin including Bacillus glycinifermentans, Flavonifractor plautii, Bacteroides eggerthii, Olsenella scatoligenes and Eubacterium eligens. Additional studies showed that B. glycinifermentans could generate 2,4,6-THBA and 3,4-DHBA from quercetin while F. plautii generates DOPAC. In addition to the differences in the metabolites produced, we also observed that the kinetics of quercetin degradation was different between B. glycinifermentans and F. plautii, suggesting that the pathways of degradation are likely different between these strains. Similar to the antiproliferative effects of 2,4,6-THBA and 3,4-DHBA demonstrated previously, DOPAC also inhibited colony formation ex vivo in the HCT-116 colon cancer cell line. Consistent with this, the bacterial culture supernatant of F. plautii also inhibited colony formation in this cell line. Thus, as F. plautii and B. glycinifermentans generate metabolites possessing antiproliferative activity, we suggest that these strains have the potential to be developed into probiotics to improve human gut health.
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Organoids and Colorectal Cancer. Cancers (Basel) 2021; 13:cancers13112657. [PMID: 34071313 PMCID: PMC8197877 DOI: 10.3390/cancers13112657] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/20/2021] [Accepted: 05/24/2021] [Indexed: 12/12/2022] Open
Abstract
Organoids were first established as a three-dimensional cell culture system from mouse small intestine. Subsequent development has made organoids a key system to study many human physiological and pathological processes that affect a variety of tissues and organs. In particular, organoids are becoming very useful tools to dissect colorectal cancer (CRC) by allowing the circumvention of classical problems and limitations, such as the impossibility of long-term culture of normal intestinal epithelial cells and the lack of good animal models for CRC. In this review, we describe the features and current knowledge of intestinal organoids and how they are largely contributing to our better understanding of intestinal cell biology and CRC genetics. Moreover, recent data show that organoids are appropriate systems for antitumoral drug testing and for the personalized treatment of CRC patients.
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Parisi A, Porzio G, Pulcini F, Cannita K, Ficorella C, Mattei V, Delle Monache S. What Is Known about Theragnostic Strategies in Colorectal Cancer. Biomedicines 2021; 9:biomedicines9020140. [PMID: 33535557 PMCID: PMC7912746 DOI: 10.3390/biomedicines9020140] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/22/2021] [Accepted: 01/25/2021] [Indexed: 02/08/2023] Open
Abstract
Despite the paradigmatic shift occurred in recent years for defined molecular subtypes in the metastatic setting treatment, colorectal cancer (CRC) still remains an incurable disease in most of the cases. Therefore, there is an urgent need for new tools and biomarkers for both early tumor diagnosis and to improve personalized treatment. Thus, liquid biopsy has emerged as a minimally invasive tool that is capable of detecting genomic alterations from primary or metastatic tumors, allowing the prognostic stratification of patients, the detection of the minimal residual disease after surgical or systemic treatments, the monitoring of therapeutic response, and the development of resistance, establishing an opportunity for early intervention before imaging detection or worsening of clinical symptoms. On the other hand, preclinical and clinical evidence demonstrated the role of gut microbiota dysbiosis in promoting inflammatory responses and cancer initiation. Altered gut microbiota is associated with resistance to chemo drugs and immune checkpoint inhibitors, whereas the use of microbe-targeted therapies including antibiotics, pre-probiotics, and fecal microbiota transplantation can restore response to anticancer drugs, promote immune response, and therefore support current treatment strategies in CRC. In this review, we aim to summarize preclinical and clinical evidence for the utilization of liquid biopsy and gut microbiota in CRC.
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Affiliation(s)
- Alessandro Parisi
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
- Medical Oncology Unit, St. Salvatore Hospital, 67100 L’Aquila, Italy; (G.P.); (K.C.); (C.F.)
| | - Giampiero Porzio
- Medical Oncology Unit, St. Salvatore Hospital, 67100 L’Aquila, Italy; (G.P.); (K.C.); (C.F.)
- Department of Biotechnology and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Fanny Pulcini
- Department of Biotechnology and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Katia Cannita
- Medical Oncology Unit, St. Salvatore Hospital, 67100 L’Aquila, Italy; (G.P.); (K.C.); (C.F.)
- Department of Biotechnology and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Corrado Ficorella
- Medical Oncology Unit, St. Salvatore Hospital, 67100 L’Aquila, Italy; (G.P.); (K.C.); (C.F.)
- Department of Biotechnology and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Vincenzo Mattei
- Biomedicine and Advanced Technologies Rieti Center, Sabina Universitas, via Angelo Maria Ricci 35A, 02100 Rieti, Italy;
| | - Simona Delle Monache
- Department of Biotechnology and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
- Correspondence: ; Tel.: +39-086-243-3569
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Hu Q, Zhou Q, Xia X, Shao L, Wang M, Lu X, Liu S, Guan W. Cytosolic sensor STING in mucosal immunity: a master regulator of gut inflammation and carcinogenesis. J Exp Clin Cancer Res 2021; 40:39. [PMID: 33485379 PMCID: PMC7825222 DOI: 10.1186/s13046-021-01850-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 01/18/2021] [Indexed: 12/16/2022] Open
Abstract
The stimulator of interferon genes (STING) connects microbial cytosolic sensing with host cell effector functions. STING signaling plays a central role in cyclic dinucleotides (CDNs) and DNA sensing to induce secretion of interferons and pro-inflammatory mediators. Although activated STING signaling favors antimicrobial progress and facilitates mucosal would healing, its role in mucosal immunity and gut homeostasis is paradoxical, ranging from positive and negative effects within the gut. In our review, we summarize recent advance of STING signaling in gut homeostasis and inflammation, especially focusing on its molecular basis in mucosal immune response. Deep understanding of the regulatory mechanisms of intestinal STING pathway could promote clinical manipulation of this fundamental signaling as a promising immunomodulatory therapy.
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Affiliation(s)
- Qiongyuan Hu
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
- Medical School of Nanjing University, Nanjing, China
| | - Quan Zhou
- Medical School of Nanjing University, Nanjing, China
| | - Xuefeng Xia
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Lihua Shao
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Meng Wang
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Xiaofeng Lu
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China.
| | - Song Liu
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China.
| | - Wenxian Guan
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing, China.
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11
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Choudhry H. The Microbiome and Its Implications in Cancer Immunotherapy. Molecules 2021; 26:E206. [PMID: 33401586 PMCID: PMC7795182 DOI: 10.3390/molecules26010206] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 12/22/2020] [Accepted: 12/30/2020] [Indexed: 02/06/2023] Open
Abstract
Cancer is responsible for ~18 million deaths globally each year, representing a major cause of death. Several types of therapy strategies such as radiotherapy, chemotherapy and more recently immunotherapy, have been implemented in treating various types of cancer. Microbes have recently been found to be both directly and indirectly involved in cancer progression and regulation, and studies have provided novel and clear insights into the microbiome-mediated emergence of cancers. Scientists around the globe are striving hard to identify and characterize these microbes and the underlying mechanisms by which they promote or suppress various kinds of cancer. Microbes may influence immunotherapy by blocking various cell cycle checkpoints and the production of certain metabolites. Hence, there is an urgent need to better understand the role of these microbes in the promotion and suppression of cancer. The identification of microbes may help in the development of future diagnostic tools to cure cancers possibly associated with the microbiome. This review mainly focuses on various microbes and their association with different types of cancer, responses to immunotherapeutic modulation, physiological responses, and prebiotic and postbiotic effects.
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Affiliation(s)
- Hani Choudhry
- Department of Biochemistry, Faculty of Sciences, Cancer and Mutagenesis Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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12
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Si H, Yang Q, Hu H, Ding C, Wang H, Lin X. Colorectal cancer occurrence and treatment based on changes in intestinal flora. Semin Cancer Biol 2020; 70:3-10. [PMID: 32404293 DOI: 10.1016/j.semcancer.2020.05.004] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 04/29/2020] [Accepted: 05/05/2020] [Indexed: 02/07/2023]
Abstract
Colorectal cancer (CRC) is the most common cancer in the world, and its incidence has been increasing in recent years. The occurrence of CRC is believed to be related to a variety of factors. Epidemiological data indicate that CRC is mainly affected by environmental factors, eating habits, physical activity and genetic factors. As a newly recognized functional component, the intestinal microbiota plays important roles in preventing CRC formation and maintaining intestinal immunity. In this review, we summarize the mechanisms by which the gut microbiota causes CRC through alterations to immune function, focusing on the mechanisms by which intestinal microbial dysfunction promotes CRC. Furthermore, we describe the changes in the intestinal flora observed in CRC and their potential for CRC treatment with the goal of facilitating future research on the roles of the intestinal flora.
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Affiliation(s)
- Huifang Si
- Department of Gastroenterology, Huaihe Hospital of Henan University, 115 Ximen Street, Kaifeng 475000, Henan, China
| | - Qing Yang
- Department of Anesthesiology, Huaihe Hospital of Henan University, 115 Ximen Street, Kaifeng 475000, Henan, China
| | - Hong Hu
- Department of Gastroenterology, Huaihe Hospital of Henan University, 115 Ximen Street, Kaifeng 475000, Henan, China
| | - Chunsheng Ding
- Department of Gastroenterology, Huaihe Hospital of Henan University, 115 Ximen Street, Kaifeng 475000, Henan, China
| | - Huichao Wang
- Department of Nephrology, First Affiliated Hospital of Henan University, 357 Ximen Street, Kaifeng 475000, Henan, China
| | - Xuhong Lin
- Department of Clinical Laboratory, Translational Medicine Center, Huaihe Hospital of Henan University, 115 Ximen Street, Kaifeng 475000, Henan, China.
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Wieczorska K, Stolarek M, Stec R. The Role of the Gut Microbiome in Colorectal Cancer: Where Are We? Where Are We Going? Clin Colorectal Cancer 2020; 19:5-12. [PMID: 31678050 DOI: 10.1016/j.clcc.2019.07.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 03/01/2019] [Accepted: 07/09/2019] [Indexed: 02/08/2023]
Abstract
Microbiome (microbiota) is a community of all microorganisms inhabiting a specific site of the body, including pathogens, which distinguishes it from the physiological microflora. Intestinal dysbiosis plays a key role in the development of colorectal cancer. In the process of carcinogenesis, inflammation, immune response, and toxic metabolites play a significant role. Specific species of bacteria might affect the risk of colorectal cancer and growth of tumor already present. Assessment of changes in the intestinal microbiome during the development and progression of colorectal cancer might create a simple diagnostic tool, a useful biomarker, or might influence treatment strategies in colorectal cancer patients. Analysis of the gut microbiome provides the potential to develop noninvasive diagnostic tests that would be useful as new protective markers of colorectal cancer, prognostic markers in already present colorectal cancer, and predictive markers of response to treatment, especially immunotherapy.
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Affiliation(s)
| | | | - Rafał Stec
- Department of Oncology, Medical University of Warsaw, Warsaw, Poland.
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14
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Ye W, Luo C, Li C, Huang J, Liu F. Organoids to study immune functions, immunological diseases and immunotherapy. Cancer Lett 2020; 477:31-40. [PMID: 32112908 DOI: 10.1016/j.canlet.2020.02.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/21/2020] [Accepted: 02/21/2020] [Indexed: 12/14/2022]
Abstract
Three-dimensional organoid culture systems show great promise as innovative physiological and pathophysiological models. Their applications in immunological research have been widely explored. For instance, immune organoids allow functional studies of immune system-related conditions, in a context that closely mimics the in vivo microenvironment, enabling an in-depth understanding of the immune tissue structures and functions. The newly developed coculture organoid and the air-liquid interface (ALI) systems also provided new insights for studying epithelia-immune cell interactions based on their endogenous distribution. Additionally, organoids have enabled the innovation of immunological disease models and exploration of the link between immunity and cancer, showing potential for personalized immunotherapy. This review is an overview of recent advances in the application of organoids in immunological research. Furthermore, the potential improvements for further utilization of organoids in personalized immunotherapy are discussed.
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Affiliation(s)
- Wenrui Ye
- Department of Neurosurgery, Xiangya Hospital, Central South University (CSU), Changsha, China; Clinical Medicine Eight-year Program, Xiangya Medical School of Central South University, Changsha, Hunan, China
| | - Cong Luo
- Clinical Medicine Eight-year Program, Xiangya Medical School of Central South University, Changsha, Hunan, China; Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chenglong Li
- Department of Neurosurgery, Xiangya Hospital, Central South University (CSU), Changsha, China; Clinical Medicine Eight-year Program, Xiangya Medical School of Central South University, Changsha, Hunan, China
| | - Jing Huang
- Department of Psychiatry, The Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China; Mental Health Institute of the Second Xiangya Hospital, Central South University, Chinese National Clinical Research Center on Mental Disorders (Xiangya), Chinese National Technology Institute on Mental Disorders, Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, Hunan, 410011, China
| | - Fangkun Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University (CSU), Changsha, China.
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15
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Tarashi S, Siadat SD, Ahmadi Badi S, Zali M, Biassoni R, Ponzoni M, Moshiri A. Gut Bacteria and their Metabolites: Which One Is the Defendant for Colorectal Cancer? Microorganisms 2019; 7:E561. [PMID: 31766208 PMCID: PMC6920974 DOI: 10.3390/microorganisms7110561] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 08/22/2019] [Accepted: 09/04/2019] [Indexed: 12/12/2022] Open
Abstract
Colorectal cancer (CRC) is a worldwide health concern which requires efficient therapeutic strategies. The mechanisms underlying CRC remain an essential subject of investigations in the cancer biology field. The evaluation of human microbiota can be critical in this regard, since the disruption of the normal community of gut bacteria is an important issue in the development of CRC. However, several studies have already evaluated the different aspects of the association between microbiota and CRC. The current study aimed at reviewing and summarizing most of the studies on the modifications of gut bacteria detected in stool and tissue samples of CRC cases. In addition, the importance of metabolites derived from gut bacteria, their relationship with the microbiota, and epigenetic modifications have been evaluated.
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Affiliation(s)
- Samira Tarashi
- Microbiology Research Center, Pasteur Institute of Iran, 1316943551 Tehran, Iran; (S.T.); (S.D.S.); (S.A.B.)
- Mycobacteriology and Pulmonary Research Department, Pasteur Institute of Iran, 1316943551 Tehran, Iran
| | - Seyed Davar Siadat
- Microbiology Research Center, Pasteur Institute of Iran, 1316943551 Tehran, Iran; (S.T.); (S.D.S.); (S.A.B.)
- Mycobacteriology and Pulmonary Research Department, Pasteur Institute of Iran, 1316943551 Tehran, Iran
| | - Sara Ahmadi Badi
- Microbiology Research Center, Pasteur Institute of Iran, 1316943551 Tehran, Iran; (S.T.); (S.D.S.); (S.A.B.)
- Mycobacteriology and Pulmonary Research Department, Pasteur Institute of Iran, 1316943551 Tehran, Iran
| | - Mohammadreza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, 19857-17411 Tehran, Iran;
| | - Roberto Biassoni
- Laboratory of Molecular Medicine, IRCCS Instituto Giannina Gaslini, 16147 Genova, Italy;
| | - Mirco Ponzoni
- Laboratory of Experimental Therapies in Oncology, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy
| | - Arfa Moshiri
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, 19857-17411 Tehran, Iran;
- Laboratory of Experimental Therapies in Oncology, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy
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16
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Yuan X, Pan Z, Jin C, Ni Y, Fu Z, Jin Y. Gut microbiota: An underestimated and unintended recipient for pesticide-induced toxicity. CHEMOSPHERE 2019; 227:425-434. [PMID: 31003127 DOI: 10.1016/j.chemosphere.2019.04.088] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/11/2019] [Accepted: 04/12/2019] [Indexed: 06/09/2023]
Abstract
Pesticide pollution residues have become increasingly common health hazards over the last several decades because of the wide use of pesticides. The gastrointestinal tract is the first physical and biological barrier to contaminated food and is therefore the first exposure site. Interestingly, a number of studies have shown that the gut microbiota plays a key role in the toxicity of pesticides and has a profound relationship with environmental animal and human health. For instance, intake of the pesticide of chlorpyrifos can promote obesity and insulin resistance through influencing gut and gut microbiota of mice. In this review, we discussed the possible effects of different kinds of widely used pesticides on the gut microbiota in different experimental models and analyzed their possible subsequent effects on the health of the host. More and more studies indicated that the gut microbiota of animals played a very important role in pesticides-induced toxicity, suggesting that gut micriobita was also the unintended recipient of pesticides. We hope that more attention can focus on the relationship between pesticides, gut microbiota and environmental health risk assessment in near future.
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Affiliation(s)
- Xianling Yuan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zihong Pan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Cuiyuan Jin
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Yinhua Ni
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhengwei Fu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Yuanxiang Jin
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, PR China.
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17
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Guven DC, Dizdar O, Alp A, Akdoğan Kittana FN, Karakoc D, Hamaloglu E, Lacin S, Karakas Y, Kilickap S, Hayran M, Yalcin S. Analysis of Fusobacterium nucleatum and Streptococcus gallolyticus in saliva of colorectal cancer patients. Biomark Med 2019; 13:725-735. [PMID: 31157977 DOI: 10.2217/bmm-2019-0020] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Aim: The aim of the study was to examine the prevalence and amount of Fusobacterium nucleatum (Fn), Porphyromonas gingivalis (Pg) and Streptococcus gallolyticus (Sg) in the saliva of colorectal cancer (CRC) patients and controls. Methods: PCR analyses performed in 71 CRC patients and 77 controls. Results: Saliva samples of patients had higher amounts of Fn (p = 0.001) and Sg (p < 0.001) compared with controls. Amount of Fn and Sg were lower in the microsatellite instability (+) group. Evaluation of salivary Sg amount by receiver operating characteristics analysis found to have diagnostic value for CRC (AUC: 0.84, 95% CI: 0.72-0.96). Conclusion: We found higher amounts of Fn and Sg in the saliva of CRC patients. Salivary Sg could helpful in distinction of CRC.
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Affiliation(s)
- Deniz Can Guven
- Department of Medical Oncology, Hacettepe University Cancer Institute, Ankara 06230, Turkey
| | - Omer Dizdar
- Department of Preventive Oncology, Hacettepe University Cancer Institute, Ankara 06230, Turkey
| | - Alpaslan Alp
- Department of Medical Microbiology, Hacettepe University Faculty of Medicine, Ankara 06230, Turkey
| | | | - Derya Karakoc
- Department of General Surgery, Hacettepe University Faculty of Medicine, Ankara 06230, Turkey
| | - Erhan Hamaloglu
- Department of General Surgery, Hacettepe University Faculty of Medicine, Ankara 06230, Turkey
| | - Sahin Lacin
- Department of Medical Oncology, Hacettepe University Cancer Institute, Ankara 06230, Turkey
| | - Yusuf Karakas
- Department of Medical Oncology, Hacettepe University Cancer Institute, Ankara 06230, Turkey
| | - Saadettin Kilickap
- Department of Preventive Oncology, Hacettepe University Cancer Institute, Ankara 06230, Turkey
| | - Mutlu Hayran
- Department of Preventive Oncology, Hacettepe University Cancer Institute, Ankara 06230, Turkey
| | - Suayib Yalcin
- Department of Medical Oncology, Hacettepe University Cancer Institute, Ankara 06230, Turkey
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18
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Fei Z, Lijuan Y, Xi Y, Wei W, Jing Z, Miao D, Shuwen H. Gut microbiome associated with chemotherapy-induced diarrhea from the CapeOX regimen as adjuvant chemotherapy in resected stage III colorectal cancer. Gut Pathog 2019; 11:18. [PMID: 31168325 PMCID: PMC6489188 DOI: 10.1186/s13099-019-0299-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 04/13/2019] [Indexed: 12/12/2022] Open
Abstract
Background Chemotherapy induced diarrhea (CID) is a common side effect in patients receiving chemotherapy for cancer. The aim of our study was to explore the association between gut microorganisms and CID from the CapeOX regimen in resected stage III colorectal cancer (CRC) patients. Results After screening and identification, 17 stool samples were collected from resected stage III CRC patients undergoing the CapeOX regimen. Bacterial 16S ribosomal RNA genes was sequenced, and a bioinformatics analysis was executed to screen for the distinctive gut microbiome and the functional metabolism associated with CID due to the CapeOX regimen. The gut microbial community richness and community diversity were lower in CID (p < 0.05 vs control group). Klebsiella pneumoniae was the most predominant species (31.22%) among the gut microbiome in CRC patients with CID. There were 75 microorganisms with statistically significant differences at the species level between the CRC patients with and without CID (LDA, linear discriminant analysis score > 2), and there were 23 pathways that the differential microorganisms might be involved in. Conclusions The gut microbial community structure and diversity have changed in CRC patients with CID. It may provide novel insights into the prevention and treatment of CID. Electronic supplementary material The online version of this article (10.1186/s13099-019-0299-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Zuo Fei
- 1Department of Gastroenterology, Huzhou Central Hospital, No. 198 Hongqi Road, Huzhou, 313000 Zhejiang China
| | - Yin Lijuan
- 2Department of Rheumatology & Immunology, Huzhou Central Hospital, No. 198 Hongqi Road, Huzhou, 313000 Zhejiang China
| | - Yang Xi
- 3Department of Intervention and Radiotherapy, Huzhou Central Hospital, No. 198 Hongqi Road, Huzhou, 313000 Zhejiang China
| | - Wu Wei
- 1Department of Gastroenterology, Huzhou Central Hospital, No. 198 Hongqi Road, Huzhou, 313000 Zhejiang China
| | - Zhong Jing
- 4Department of Central Laboratory, Huzhou Central Hospital, No. 198 Hongqi Road, Huzhou, 313000 Zhejiang China
| | - Da Miao
- 5Medical College of Nursing, Huzhou University, No. 759 Erhuan East Road, Huzhou, 313000 Zhejiang China
| | - Han Shuwen
- 6Department of Medical Oncology, Huzhou Central Hospital, No. 198 Hongqi Road, Huzhou, 313000 Zhejiang China
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19
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Natural polysaccharides exhibit anti-tumor activity by targeting gut microbiota. Int J Biol Macromol 2019; 121:743-751. [DOI: 10.1016/j.ijbiomac.2018.10.083] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/29/2018] [Accepted: 10/14/2018] [Indexed: 12/30/2022]
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20
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Circulating tumor DNA detection: A potential tool for colorectal cancer management. Oncol Lett 2018; 17:1409-1416. [PMID: 30675194 PMCID: PMC6341840 DOI: 10.3892/ol.2018.9794] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 08/31/2018] [Indexed: 12/22/2022] Open
Abstract
Colorectal cancer (CRC) is frequently diagnosed at an advanced stage of the disease, the pathogenesis of which is influenced by genetic and epigenetic events. Circulating tumor DNA (ctDNA) is extracellular DNA that is present in a number of bodily fluids, including blood, synovial fluid and cerebrospinal fluid. Compared with performing a tissue biopsy, ctDNA examination presents the advantages of minimal invasion and greater convenience. ctDNA is commonly used to identify actionable genomic alterations, monitor treatment responses, unravel therapeutic resistance and potentially detect disease progression prior to clinical and radiological confirmation. The technique can potentially serve as a non-invasive diagnostic tool in personalized medicine, as it demonstrates prognostic value in the management of patients with CRC. ctDNA detection continues to demonstrate inherent advantages compared with other methods, thus serving an increasingly important role in tumor monitoring and oncotherapy. The aim of the current review was to explore the clinical applications of ctDNA in patients with CRC, including early detection and screening, medication guidance, resistance prediction, and residual lesion and recurrence monitoring. Furthermore, several technical methods for ctDNA detection and analysis are explored, as well as other potential biomarkers.
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21
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A Systematic Overview of Type II and III Toxin-Antitoxin Systems with a Focus on Druggability. Toxins (Basel) 2018; 10:toxins10120515. [PMID: 30518070 PMCID: PMC6315513 DOI: 10.3390/toxins10120515] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 11/29/2018] [Accepted: 11/30/2018] [Indexed: 02/07/2023] Open
Abstract
Toxin-antitoxin (TA) systems are known to play various roles in physiological processes, such as gene regulation, growth arrest and survival, in bacteria exposed to environmental stress. Type II TA systems comprise natural complexes consisting of protein toxins and antitoxins. Each toxin and antitoxin participates in distinct regulatory mechanisms depending on the type of TA system. Recently, peptides designed by mimicking the interfaces between TA complexes showed its potential to activate the activity of toxin by competing its binding counterparts. Type II TA systems occur more often in pathogenic bacteria than in their nonpathogenic kin. Therefore, they can be possible drug targets, because of their high abundance in some pathogenic bacteria, such as Mycobacterium tuberculosis. In addition, recent bioinformatic analyses have shown that type III TA systems are highly abundant in the intestinal microbiota, and recent clinical studies have shown that the intestinal microbiota is linked to inflammatory diseases, obesity and even several types of cancer. We therefore focused on exploring the putative relationship between intestinal microbiota-related human diseases and type III TA systems. In this paper, we review and discuss the development of possible druggable materials based on the mechanism of type II and type III TA system.
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22
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Cani PD, Jordan BF. Gut microbiota-mediated inflammation in obesity: a link with gastrointestinal cancer. Nat Rev Gastroenterol Hepatol 2018; 15:671-682. [PMID: 29844585 DOI: 10.1038/s41575-018-0025-6] [Citation(s) in RCA: 224] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Overweight and obesity are associated with increased risk of developing metabolic disorders such as diabetes and cardiovascular diseases. However, besides these metabolic diseases, excess body weight is also associated with different cancers, including gastrointestinal cancers, such as liver, pancreatic and colon cancers. Inflammation is a common feature of both obesity and cancer; however, the origin of this inflammation has been largely debated. Over the past decade, growing evidence has shown that the composition of the gut microbiota and its activity might be associated not only with the onset of inflammation but also with metabolic disorders and cancer. Here, we review the links between the gut microbiota, gut barrier function and the onset of low-grade inflammation in the development of gastrointestinal cancer. We also describe the mechanisms by which specific microorganism-associated molecular patterns crosstalk with the immune system and how the metabolic activity of bacteria induces specific signalling pathways beyond the gut that eventually trigger carcinogenesis.
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Affiliation(s)
- Patrice D Cani
- Université catholique de Louvain, Louvain Drug Research Institute, WELBIO (Walloon Excellence in Life sciences and BIOtechnology), Metabolism and Nutrition Research Group, Brussels, Belgium.
| | - Benedicte F Jordan
- Université catholique de Louvain, Louvain Drug Research Institute, Biomedical Magnetic Resonance Research Group, Brussels, Belgium
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23
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Baker K. Organoids Provide an Important Window on Inflammation in Cancer. Cancers (Basel) 2018; 10:E151. [PMID: 29883385 PMCID: PMC5977124 DOI: 10.3390/cancers10050151] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/17/2018] [Accepted: 05/17/2018] [Indexed: 02/08/2023] Open
Abstract
Inflammation is a primary driver of cancer initiation and progression. However, the complex and dynamic nature of an inflammatory response make this a very difficult process to study. Organoids are a new model system where complex multicellular structures of primary cells can be grown in a 3D matrix to recapitulate the biology of the parent tissue. This experimental model offers several distinct advantages over alternatives including the ability to be genetically engineered, implanted in vivo and reliably derived from a wide variety of normal and cancerous tissue from patients. Furthermore, long-term organoid cultures reproduce many features of their source tissue, including genetic and epigenetic alterations and drug sensitivity. Perhaps most significantly, cancer organoids can be cocultured in a variety of different systems with a patients’ own immune cells, uniquely permitting the study of autologous cancer-immune cell interactions. Experiments with such systems promise to shed light on the mechanisms governing inflammation-associated cancer while also providing prognostic information on an individual patient’s responsiveness to immunotherapeutic anti-cancer drugs. Thanks to their ability to capture important features of the complex relationship between a cancer and its microenvironment, organoids are poised to become an essential tool for unraveling the mechanisms by which inflammation promotes cancer.
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Affiliation(s)
- Kristi Baker
- Department of Oncology, University of Alberta, Edmonton, AB T6G 1Z2, Canada.
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Han S, Gao J, Zhou Q, Liu S, Wen C, Yang X. Role of intestinal flora in colorectal cancer from the metabolite perspective: a systematic review. Cancer Manag Res 2018; 10:199-206. [PMID: 29440929 PMCID: PMC5798565 DOI: 10.2147/cmar.s153482] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Colorectal cancer is one of the most common human malignant tumors. Recent research has shown that colorectal cancer is a dysbacteriosis-induced disease; however, the role of intestinal bacteria in colorectal cancer is unclear. This review explores the role of intestinal flora in colorectal cancer. In total, 57 articles were included after identification and screening. The pertinent literature on floral metabolites in colorectal cancer from three metabolic perspectives - including carbohydrate, lipid, and amino acid metabolism - was analyzed. An association network regarding the role of intestinal flora from a metabolic perspective was constructed by analyzing the previous literature to provide direction and insight for further research on intestinal flora in colorectal cancer.
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Affiliation(s)
- Shuwen Han
- Department of Medical Oncology, Huzhou Central Hospital
| | - Jianlan Gao
- Department of Medical Oncology, Huzhou Central Hospital
| | - Qing Zhou
- Department of Critical Care Medicine, Huzhou Central Hospital
| | | | - Caixia Wen
- Medical College of Nursing, Huzhou University
| | - Xi Yang
- Department of Intervention and Radiotherapy, Huzhou Central Hospital, Huzhou, Zhejiang Province, People’s Republic of China
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