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Ou QL, Chang YL, Liu JH, Yan HX, Chen LZ, Guo DY, Zhang SF. Mapping the intellectual structure and landscape of colorectal cancer immunotherapy: A bibliometric analysis. Hum Vaccin Immunother 2024; 20:2323861. [PMID: 38497584 PMCID: PMC10950274 DOI: 10.1080/21645515.2024.2323861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 02/23/2024] [Indexed: 03/19/2024] Open
Abstract
Immunotherapy, particularly immune checkpoint inhibitor (ICIs) therapy, stands as an innovative therapeutic approach currently garnering substantial attention in cancer treatment. It has become a focal point of numerous studies, showcasing significant potential in treating malignancies, including lung cancer and melanoma. The objective of this research is to analyze publications regarding immunotherapy for colorectal cancer (CRC), investigating their attributes and identifying the current areas of interest and cutting-edge advancements. We took into account the publications from 2002 to 2022 included in the Web of Science Core Collection. Bibliometric analysis and visualization were conducted using CiteSpace, VOSviewer, R-bibliometrix, and Microsoft Excel. The quantity of publications associated with this domain has been steadily rising over the years, encompassing 3753 articles and 1498 reviews originating from 573 countries and regions, involving 19,166 institutions, 1011 journals, and 32,301 authors. In this field, China, the United States, and Italy are the main countries that come forward for publishing. The journal with the greatest impact factor is CA-A Cancer Journal for Clinicians. Romain Cohen leads in the number of publications, while Le Dt stands out as the most influential author. The immune microenvironment and immune infiltration are emerging as key hotspots and future research directions in this domain. This research carries out an extensive bibliometric examination of immunotherapy for colorectal cancer, aiding researchers in understanding current focal points, investigating possible avenues for research, and recognizing forthcoming development trends.
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Affiliation(s)
- Qin Ling Ou
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- College of Integrated Traditional Chinese & Western Medicine, Hunan University of Traditional Chinese Medicine, Changsha, Hunan, China
| | - Yong Long Chang
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jin Hui Liu
- College of Integrated Traditional Chinese & Western Medicine, Hunan University of Traditional Chinese Medicine, Changsha, Hunan, China
| | - Hai Xia Yan
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lin Zi Chen
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Duan Yang Guo
- College of Integrated Traditional Chinese & Western Medicine, Hunan University of Traditional Chinese Medicine, Changsha, Hunan, China
| | - Si Fang Zhang
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
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2
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Lu S, Wang C, Ma J, Wang Y. Metabolic mediators: microbial-derived metabolites as key regulators of anti-tumor immunity, immunotherapy, and chemotherapy. Front Immunol 2024; 15:1456030. [PMID: 39351241 PMCID: PMC11439727 DOI: 10.3389/fimmu.2024.1456030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Accepted: 08/27/2024] [Indexed: 10/04/2024] Open
Abstract
The human microbiome has recently emerged as a focal point in cancer research, specifically in anti-tumor immunity, immunotherapy, and chemotherapy. This review explores microbial-derived metabolites, emphasizing their crucial roles in shaping fundamental aspects of cancer treatment. Metabolites such as short-chain fatty acids (SCFAs), Trimethylamine N-Oxide (TMAO), and Tryptophan Metabolites take the spotlight, underscoring their diverse origins and functions and their profound impact on the host immune system. The focus is on SCFAs' remarkable ability to modulate immune responses, reduce inflammation, and enhance anti-tumor immunity within the intricate tumor microenvironment (TME). The review critically evaluates TMAO, intricately tied to dietary choices and gut microbiota composition, assessing its implications for cancer susceptibility, progression, and immunosuppression. Additionally, the involvement of tryptophan and other amino acid metabolites in shaping immune responses is discussed, highlighting their influence on immune checkpoints, immunosuppression, and immunotherapy effectiveness. The examination extends to their dynamic interaction with chemotherapy, emphasizing the potential of microbial-derived metabolites to alter treatment protocols and optimize outcomes for cancer patients. A comprehensive understanding of their role in cancer therapy is attained by exploring their impacts on drug metabolism, therapeutic responses, and resistance development. In conclusion, this review underscores the pivotal contributions of microbial-derived metabolites in regulating anti-tumor immunity, immunotherapy responses, and chemotherapy outcomes. By illuminating the intricate interactions between these metabolites and cancer therapy, the article enhances our understanding of cancer biology, paving the way for the development of more effective treatment options in the ongoing battle against cancer.
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Affiliation(s)
- Shan Lu
- Department of General Practice, The Second Hospital of Jilin University, Changchun, China
| | - Chunling Wang
- Medical Affairs Department, The Second Hospital of Jilin University, Changchun, China
| | - Jingru Ma
- Department of Clinical Laboratory, the Second Hospital of Jilin University, Changchun, China
| | - Yichao Wang
- Department of Obstetrics and Gynecology, the Second Hospital of Jilin University, Changchun, China
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Nakatsukasa H, Takahashi M, Shibano M, Ishigami Y, Kawaguchi T, Nakamura Y, Kaneda H. Clinical impact of concomitant BIO-three use in advanced or recurrent non-small cell lung cancer treated with immune-checkpoint inhibitor. Int J Clin Oncol 2024:10.1007/s10147-024-02622-z. [PMID: 39278980 DOI: 10.1007/s10147-024-02622-z] [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: 04/30/2024] [Accepted: 09/01/2024] [Indexed: 09/18/2024]
Abstract
BACKGROUND Immune checkpoint inhibitors (ICIs) have been approved as first-line therapy for advanced non-small cell lung cancer (NSCLC). The probiotic MIYAIRI 588 can potentially improve the outcomes of patients with advanced NSCLC treated with ICI. However, the impact of other probiotics on ICI-treatment efficacy remains unclear. Thus, we aimed to clarify the association between BIO-three use and treatment outcomes in patients with advanced NSCLC treated with ICI. METHODS This retrospective study included patients aged ≥ 18 years with advanced or recurrent NSCLC who had received ICI monotherapy or ICI plus chemotherapy. Concomitant therapy with probiotic bacteria was defined as receiving it within 180 days before ICI therapy. RESULTS Here, 289 patients were enrolled, including 23 (8.0%) receiving BIO-three. In the multivariable analysis, the progression-free survival (PFS) and overall survival (OS) of patients receiving BIO-three tended to be longer than those of patients not receiving probiotic therapy (PFS, hazard ratio [HR] 0.75; 95% confidence interval [CI] 0.43-1.30; p = 0.33; OS, HR 0.69; 95% CI 0.37-1.28; p = 0.24). After propensity score matching with weighted adjustment, patients receiving BIO-three tended to have prolonged PFS (median PFS [range] 7.6 months [2.6-17.4] vs 3.2 months [1.6-7.0]; HR 0.53; 95% CI 0.25-1.12; p = 0.09) and OS (median OS [range] 25.6 months [10.8-not reached] vs 10.9 months [7.3-not reached]; HR 0.57; 95% CI 0.24-1.36; p = 0.20) than those not receiving probiotic therapy. CONCLUSION This study suggests the prognostic impact of concomitant BIO-three use in patients with advanced NSCLC on ICI treatment.
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Affiliation(s)
- Hitomi Nakatsukasa
- Department of Pharmacy, Osaka Metropolitan University Hospital, Osaka, Japan
| | - Masaya Takahashi
- Department of Pharmacy, Osaka Metropolitan University Hospital, Osaka, Japan
- Department of Quality and Safety Management, Osaka Metropolitan University Hospital, Osaka, Japan
| | - Masahito Shibano
- Department of Pharmacy, Osaka Metropolitan University Hospital, Osaka, Japan
| | - Yusuke Ishigami
- Department of Pharmacy, Osaka Metropolitan University Hospital, Osaka, Japan
| | - Tomoya Kawaguchi
- Department of Clinical Oncology, Graduate School of Medicine, Osaka Metropolitan University, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Yasutaka Nakamura
- Department of Pharmacy, Osaka Metropolitan University Hospital, Osaka, Japan
| | - Hiroyasu Kaneda
- Department of Clinical Oncology, Graduate School of Medicine, Osaka Metropolitan University, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan.
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4
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Xu Y, He C, Xi Y, Zhang Y, Bai Y. Gut microbiota and immunosenescence in cancer. Semin Cancer Biol 2024; 104-105:32-45. [PMID: 39127266 DOI: 10.1016/j.semcancer.2024.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 07/24/2024] [Accepted: 07/29/2024] [Indexed: 08/12/2024]
Abstract
Cancer is generally defined as a disease of aging. With aging, the composition, diversity and functional characteristics of the gut microbiota occur changes, with a decline of beneficial commensal microbes triggered by intrinsic and extrinsic factors (e.g., diet, drugs and chronic health conditions). Nowadays, dysbiosis of the gut microbiota is recognized as a hallmark of cancer. At the same time, aging is accompanied by changes in innate and adaptive immunity, known as immunosenescence, as well as chronic low-grade inflammation, known as inflammaging. The elevated cancer incidence and mortality in the elderly are linked with aging-associated alterations in the gut microbiota that elicit systemic metabolic alterations, leading to immune dysregulation with potentially tumorigenic effects. The gut microbiota and immunosenescence might both affect the response to treatment in cancer patients. In-depth understanding of age-associated alterations in the gut microbiota and immunity will shed light on the risk of cancer development and progression in the elderly. Here, we describe the aging-associated changes of the gut microbiota in cancer, and review the evolving understanding of the gut microbiota-targeted intervention strategies. Furthermore, we summarize the knowledge on the cellular and molecular mechanisms of immunosenescence and its impact on cancer. Finally, we discuss the latest knowledge about the relationships between gut microbiota and immunosenescence, with implications for cancer therapy. Intervention strategies targeting the gut microbiota may attenuate inflammaging and rejuvenate immune function to provide antitumor benefits in elderly patients.
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Affiliation(s)
- Yaozheng Xu
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110136, China; Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, Liaoning 110136, China.
| | - Chuan He
- Department of Laboratory Medicine, The First Hospital of China Medical University, Shenyang, Liaoning 110001, China.
| | - Ying Xi
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110136, China; Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, Liaoning 110136, China.
| | - Yue Zhang
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110136, China; Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, Liaoning 110136, China.
| | - Yibo Bai
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110136, China; Liaoning Clinical Research Center for Laboratory Medicine, Shenyang, Liaoning 110136, China.
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5
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Xia L, Zhu X, Wang Y, Lu S. The gut microbiota improves the efficacy of immune-checkpoint inhibitor immunotherapy against tumors: From association to cause and effect. Cancer Lett 2024; 598:217123. [PMID: 39033797 DOI: 10.1016/j.canlet.2024.217123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/20/2024] [Accepted: 07/17/2024] [Indexed: 07/23/2024]
Abstract
Immune-checkpoint inhibitors (ICIs), including anti-PD-1/PD-L1 therapeutic antibodies, have markedly enhanced survival across numerous cancer types. However, the limited number of patients with durable benefits creates an urgent need to identify response biomarkers and to develop novel strategies so as to improve response. It is widely recognized that the gut microbiome is a key mediator in shaping immunity. Additionally, the gut microbiome shows significant potential in predicting the response to and enhancing the efficacy of ICI immunotherapy against cancer. Recent studies encompassing mechanistic analyses and clinical trials of microbiome-based therapy have shown a cause-and-effect relationship between the gut microbiome and the modulation of the ICI immunotherapeutic response, greatly contributing to the establishment of novel strategies that will improve response and overcome resistance to ICI treatment. In this review, we outline the current state of research advances and discuss the future directions of utilizing the gut microbiome to enhance the efficacy of ICI immunotherapy against tumors.
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Affiliation(s)
- Liliang Xia
- Shanghai Lung Cancer Center, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, PR China
| | - Xiaokuan Zhu
- Shanghai Lung Cancer Center, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, PR China
| | - Ying Wang
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, PR China.
| | - Shun Lu
- Shanghai Lung Cancer Center, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, PR China.
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6
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Li X, Shang S, Wu M, Song Q, Chen D. Gut microbial metabolites in lung cancer development and immunotherapy: Novel insights into gut-lung axis. Cancer Lett 2024; 598:217096. [PMID: 38969161 DOI: 10.1016/j.canlet.2024.217096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 06/11/2024] [Accepted: 06/28/2024] [Indexed: 07/07/2024]
Abstract
Metabolic derivatives of numerous microorganisms inhabiting the human gut can participate in regulating physiological activities and immune status of the lungs through the gut-lung axis. The current well-established microbial metabolites include short-chain fatty acids (SCFAs), tryptophan and its derivatives, polyamines (PAs), secondary bile acids (SBAs), etc. As the study continues to deepen, the critical function of microbial metabolites in the occurrence and treatment of lung cancer has gradually been revealed. Microbial derivates can enter the circulation system to modulate the immune microenvironment of lung cancer. Mechanistically, oncometabolites damage host DNA and promote the occurrence of lung cancer, while tumor-suppresive metabolites directly affect the immune system to combat the malignant properties of cancer cells and even show considerable application potential in improving the efficacy of lung cancer immunotherapy. Considering the crosstalk along the gut-lung axis, in-depth exploration of microbial metabolites in patients' feces or serum will provide novel guidance for lung cancer diagnosis and treatment selection strategies. In addition, targeted therapeutics on microbial metabolites are expected to overcome the bottleneck of lung cancer immunotherapy and alleviate adverse reactions, including fecal microbiota transplantation, microecological preparations, metabolite synthesis and drugs targeting metabolic pathways. In summary, this review provides novel insights and explanations on the intricate interplay between gut microbial metabolites and lung cancer development, and immunotherapy through the lens of the gut-lung axis, which further confirms the possible translational potential of the microbiome metabolome in lung cancer treatment.
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Affiliation(s)
- Xinpei Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Shijie Shang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China; Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Meng Wu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Qian Song
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China.
| | - Dawei Chen
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China.
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Cheraghpour M, Fatemi N, Shadnoush M, Talebi G, Tierling S, Bermúdez-Humarán LG. Immunomodulation aspects of gut microbiome-related interventional strategies in colorectal cancer. Med Oncol 2024; 41:231. [PMID: 39162936 DOI: 10.1007/s12032-024-02480-9] [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] [Accepted: 08/12/2024] [Indexed: 08/21/2024]
Abstract
Colorectal cancer (CRC), the third most common cancer worldwide, develops mainly due to the accumulation of genetic and epigenetic changes over many years. Substantial evidence suggests that gut microbiota plays a significant role in the initiation, progression, and control of CRC, depending on the balance between beneficial and pathogenic microorganisms. Nonetheless, gut microbiota composition by regulating the host immune response may either promote or inhibit CRC. Thus, modification of gut microbiota potentially impacts clinical outcomes of immunotherapy. Previous studies have indicated that therapeutic strategies such as probiotics, prebiotics, and postbiotics enhance the intestinal immune system and improve the efficacy of immunotherapeutic agents, potentially serving as a complementary strategy in cancer immunotherapy. This review discusses the role of the gut microbiota in the onset and development of CRC in relation to the immune response. Additionally, we focus on the effect of strategies manipulating gut microbiome on the immune response and efficacy of immunotherapy against CRC. We demonstrate that manipulation of gut microbiome can enhance immune response and outcomes of immunotherapy through downregulating Treg cells and other immunosuppressive cells while improving the function of T cells within the tumor; however, further research, especially clinical trials, are needed to evaluate its efficacy in cancer treatment.
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Affiliation(s)
- Makan Cheraghpour
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nayeralsadat Fatemi
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahdi Shadnoush
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Clinical Nutrition & Dietetics, Faculty of Nutrition Science and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ghazaleh Talebi
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sascha Tierling
- Department of Genetics/Epigenetics, Faculty NT, Life Sciences, Saarland University, Saarbrücken, Germany
| | - Luis G Bermúdez-Humarán
- INRAE, AgroParisTech, Micalis Institute, Université Paris-Saclay, 78350, Jouy-en-Josas, France.
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Mai Z, Han Y, Liang D, Mai F, Zheng H, Li P, Li Y, Ma C, Chen Y, Li W, Zhang S, Feng Y, Chen X, Wang Y. Gut-derived metabolite 3-methylxanthine enhances cisplatin-induced apoptosis via dopamine receptor D1 in a mouse model of ovarian cancer. mSystems 2024; 9:e0130123. [PMID: 38899930 PMCID: PMC11264688 DOI: 10.1128/msystems.01301-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 04/30/2024] [Indexed: 06/21/2024] Open
Abstract
Platinum-based chemotherapy failure represents a significant challenge in the management of ovarian cancer (OC) and contributes to disease recurrence and poor prognosis. Recent studies have shed light on the involvement of the gut microbiota in modulating anticancer treatments. However, the precise underlying mechanisms, by which gut microbiota regulates the response to platinum-based therapy, remain unclear. Here, we investigated the role of gut microbiota on the anticancer response of cisplatin and its underlying mechanisms. Our results demonstrate a substantial improvement in the anticancer efficacy of cisplatin following antibiotic-induced perturbation of the gut microbiota in OC-bearing mice. 16S rRNA sequencing showed a pronounced alteration in the composition of the gut microbiome in the cecum contents following exposure to cisplatin. Through metabolomic analysis, we identified distinct metabolic profiles in the antibiotic-treated group, with a notable enrichment of the gut-derived metabolite 3-methylxanthine in antibiotic-treated mice. Next, we employed a strategy combining transcriptome analysis and chemical-protein interaction network databases. We identified metabolites that shared structural similarity with 3-methylxanthine, which interacted with genes enriched in cancer-related pathways. It is identified that 3-methylxanthinesignificantly enhances the effectiveness of cisplatin by promoting apoptosis both in vivo and in vitro. Importantly, through integrative multiomics analyses, we elucidated the mechanistic basis of this enhanced apoptosis, revealing a dopamine receptor D1-dependent pathway mediated by 3-methylxanthine. This study elucidated the mechanism by which gut-derived metabolite 3-methylxanthine mediated cisplatin-induced apoptosis. Our findings highlight the potential translational significance of 3-methylxanthine as a promising adjuvant in conjunction with cisplatin, aiming to improve treatment outcomes for OC patients.IMPORTANCEThe precise correlation between the gut microbiota and the anticancer effect of cisplatin in OC remains inadequately understood. Our investigation has revealed that manipulation of the gut microbiota via the administration of antibiotics amplifies the efficacy of cisplatin through the facilitation of apoptosis in OC-bearing mice. Metabolomic analysis has demonstrated that the cecum content from antibiotic-treated mice exhibits an increase in the levels of 3-methylxanthine, which has been shown to potentially enhance the therapeutic effectiveness of cisplatin by an integrated multiomic analysis. This enhancement appears to be attributable to the promotion of cisplatin-induced apoptosis, with 3-methylxanthine potentially exerting its influence via the dopamine receptor D1-dependent pathway. These findings significantly contribute to our comprehension of the impact of the gut microbiota on the anticancer therapy in OC. Notably, the involvement of 3-methylxanthine suggests its prospective utility as a supplementary component for augmenting treatment outcomes in patients afflicted with ovarian cancer.
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Affiliation(s)
- Zhensheng Mai
- Obstetrics and Gynecology Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
- Department of Obstetrics & Gynecology, First people’s hospital of Foshan, Foshan, China
| | - Yubin Han
- Department of Obstetrics & Gynecology, First people’s hospital of Foshan, Foshan, China
| | - Dong Liang
- Department of Obstetrics & Gynecology, First people’s hospital of Foshan, Foshan, China
| | - Feihong Mai
- Institute of Ecological Sciences, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Huimin Zheng
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang Province, China
| | - Pan Li
- Microbiome Research Centre, St. George and Sutherland Clinical School, UNSW, Sydney, New South Wales, Australia
| | - Yuan Li
- Department of Obstetrics & Gynecology, First people’s hospital of Foshan, Foshan, China
| | - Cong Ma
- Department of Obstetrics & Gynecology, First people’s hospital of Foshan, Foshan, China
| | - Yunqing Chen
- Department of Obstetrics & Gynecology, First people’s hospital of Foshan, Foshan, China
| | - Weifeng Li
- Department of Obstetrics & Gynecology, First people’s hospital of Foshan, Foshan, China
| | - Siyou Zhang
- Department of Obstetrics & Gynecology, First people’s hospital of Foshan, Foshan, China
| | - Yinglin Feng
- Department of Obstetrics, Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University, Foshan, China
| | - Xia Chen
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang Province, China
| | - Yifeng Wang
- Obstetrics and Gynecology Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
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Chen C, Han P, Qing Y. Metabolic heterogeneity in tumor microenvironment - A novel landmark for immunotherapy. Autoimmun Rev 2024; 23:103579. [PMID: 39004158 DOI: 10.1016/j.autrev.2024.103579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/10/2024] [Accepted: 07/09/2024] [Indexed: 07/16/2024]
Abstract
The surrounding non-cancer cells and tumor cells that make up the tumor microenvironment (TME) have various metabolic rhythms. TME metabolic heterogeneity is influenced by the intricate network of metabolic control within and between cells. DNA, protein, transport, and microbial levels are important regulators of TME metabolic homeostasis. The effectiveness of immunotherapy is also closely correlated with alterations in TME metabolism. The response of a tumor patient to immunotherapy is influenced by a variety of variables, including intracellular metabolic reprogramming, metabolic interaction between cells, ecological changes within and between tumors, and general dietary preferences. Although immunotherapy and targeted therapy have made great strides, their use in the accurate identification and treatment of tumors still has several limitations. The function of TME metabolic heterogeneity in tumor immunotherapy is summarized in this article. It focuses on how metabolic heterogeneity develops and is regulated as a tumor progresses, the precise molecular mechanisms and potential clinical significance of imbalances in intracellular metabolic homeostasis and intercellular metabolic coupling and interaction, as well as the benefits and drawbacks of targeted metabolism used in conjunction with immunotherapy. This offers insightful knowledge and important implications for individualized tumor patient diagnosis and treatment plans in the future.
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Affiliation(s)
- Chen Chen
- The First Affiliated Hospital of Ningbo University, Ningbo 315211, Zhejiang, China
| | - Peng Han
- Harbin Medical University Cancer Hospital, Harbin 150081, Heilongjiang, China.
| | - Yanping Qing
- The First Affiliated Hospital of Ningbo University, Ningbo 315211, Zhejiang, China.
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10
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Zakharevich NV, Morozov MD, Kanaeva VA, Filippov MS, Zyubko TI, Ivanov AB, Ulyantsev VI, Klimina KM, Olekhnovich EI. Systemic metabolic depletion of gut microbiome undermines responsiveness to melanoma immunotherapy. Life Sci Alliance 2024; 7:e202302480. [PMID: 38448159 PMCID: PMC10917649 DOI: 10.26508/lsa.202302480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/09/2024] [Accepted: 02/12/2024] [Indexed: 03/08/2024] Open
Abstract
Immunotherapy has proven to be a boon for patients battling metastatic melanoma, significantly improving their clinical condition and overall quality of life. A compelling link between the composition of the gut microbiome and the efficacy of immunotherapy has been established in both animal models and human patients. However, the precise biological mechanisms by which gut microbes influence treatment outcomes remain poorly understood. Using a robust dataset of 680 fecal metagenomes from melanoma patients, a detailed catalog of metagenome-assembled genomes (MAGs) was constructed to explore the compositional and functional properties of the gut microbiome. Our study uncovered significant findings that deepen the understanding of the intricate relationship between gut microbes and the efficacy of melanoma immunotherapy. In particular, we discovered the specific metagenomic profile of patients with favorable treatment outcomes, characterized by a prevalence of MAGs with increased overall metabolic potential and proficiency in polysaccharide utilization, along with those responsible for cobalamin and amino acid production. Furthermore, our investigation of the biosynthetic pathways of short-chain fatty acids, known for their immunomodulatory role, revealed a differential abundance of these pathways among the specific MAGs. Among others, the cobalamin-dependent Wood-Ljungdahl pathway of acetate synthesis was directly associated with responsiveness to melanoma immunotherapy.
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Affiliation(s)
- Natalia V Zakharevich
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russian
| | - Maxim D Morozov
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russian
| | - Vera A Kanaeva
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russian
- Moscow Institute of Physics and Technology, Moscow, Russian
| | - Mikhail S Filippov
- https://ror.org/04btxg914 Bioinformatics Institute, Saint Petersburg, Russian
| | - Tatyana I Zyubko
- https://ror.org/04btxg914 Bioinformatics Institute, Saint Petersburg, Russian
| | - Artem B Ivanov
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russian
- ITMO University, Saint Petersburg, Russian
| | | | - Ksenia M Klimina
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russian
| | - Evgenii I Olekhnovich
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russian
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11
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Jiang H, Zhang Q. Gut microbiota influences the efficiency of immune checkpoint inhibitors by modulating the immune system (Review). Oncol Lett 2024; 27:87. [PMID: 38249807 PMCID: PMC10797324 DOI: 10.3892/ol.2024.14221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 12/13/2023] [Indexed: 01/23/2024] Open
Abstract
Immune checkpoint inhibitors (ICIs) are commonly utilized in tumor treatment. However, they still have limitations, including insufficient effectiveness and unavoidable adverse events. It has been demonstrated that gut microbiota can influence the effectiveness of ICIs, although the precise mechanism remains unclear. Gut microbiota plays a crucial role in the formation and development of the immune system. Gut microbiota and their associated metabolites play a regulatory role in immune balance. Tumor occurrence and development are linked to their ability to evade recognition and destruction by the immune system. The purpose of ICIs treatment is to reinitiate the immune system's elimination of tumor cells. Thus, the immune system acts as a communication bridge between gut microbiota and ICIs. Varied composition and characteristics of gut microbiota result in diverse outcomes in ICIs treatment. Certain gut microbiota-related metabolites also influence the therapeutic efficacy of ICIs to some extent. The administration of antibiotics before or during ICIs treatment can diminish treatment effectiveness. The utilization of probiotics and fecal transplantation can partially alter the outcome of ICIs treatment. The present review synthesized previous studies to examine the association between gut microbiota and ICIs, elucidated the role of gut microbiota and its associated factors in ICIs treatment, and offered direction for future research.
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Affiliation(s)
- Haihong Jiang
- Department of Oncology, Huaihe Hospital of Henan University, Kaifeng, Henan 475001, P.R. China
| | - Qinlu Zhang
- Department of Endocrinology, Huaihe Hospital of Henan University, Kaifeng, Henan 475001, P.R. China
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Ren P, Yue H, Tang Q, Wang Y, Xue C. Astaxanthin slows down skeletal muscle atrophy in H22 tumor-bearing mice during sorafenib treatment by modulating the gut microbiota. Food Funct 2024; 15:543-558. [PMID: 38116809 DOI: 10.1039/d3fo04633h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Astaxanthin is a carotenoid that is taken orally and has antitumor and anti-inflammatory properties. Our previous research demonstrated that astaxanthin alleviated skeletal muscle atrophy during sorafenib treatment in H22 tumor-bearing mice and altered the intestinal flora composition. However, the relationship between astaxanthin's amelioration of skeletal muscle atrophy in tumor-bearing mice and its ability to regulate intestinal flora is not clear. We used broad-spectrum antibiotics to create pseudo-sterile tumor-bearing mice, which we then used in fecal bacteria transplantation experiments. Our results indicate that the role of astaxanthin in ameliorating skeletal muscle atrophy during molecularly targeted therapy in mice with tumors is dependent on the intestinal flora. Astaxanthin substantially promoted the proliferation of Blautia, Parabacteroides, and Roseburia, altered the levels of metabolites in mouse serum, and primarily affected the amino acid metabolism of mice. Astaxanthin ameliorated skeletal muscle atrophy by promoting the activation of AKT/FOXO3a, which inhibited the expression of ubiquitination-degrading Fbx32 and MuRF1 and promoted myogenesis in skeletal muscle. Our study confirms that the intestinal flora is an important target for astaxanthin to combat skeletal muscle atrophy. Our research supports the use of astaxanthin as a nutritional supplement and intestinal microecological regulator for cancer patients.
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Affiliation(s)
- Pengfei Ren
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of, China, Qingdao, Shandong 266003, China.
| | - Han Yue
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of, China, Qingdao, Shandong 266003, China.
| | - Qingjuan Tang
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of, China, Qingdao, Shandong 266003, China.
| | - Yuming Wang
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of, China, Qingdao, Shandong 266003, China.
| | - Changhu Xue
- State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of, China, Qingdao, Shandong 266003, China.
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Ha S, Zhang X, Yu J. Probiotics intervention in colorectal cancer: From traditional approaches to novel strategies. Chin Med J (Engl) 2024; 137:8-20. [PMID: 38031348 PMCID: PMC10766304 DOI: 10.1097/cm9.0000000000002955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Indexed: 12/01/2023] Open
Abstract
ABSTRACT The intestine harbors a large population of microorganisms that interact with epithelial cells to maintain host healthy physiological status. These intestinal microbiota engage in the fermentation of non-digestible nutrients and produce beneficial metabolites to regulate host homeostasis, metabolism, and immune response. The disruption of microbiota, known as dysbiosis, has been implicated in many intestinal diseases, including colorectal cancer (CRC). As the third most common cancer and the second leading cause of cancer-related death worldwide, CRC poses a significant health burden. There is an urgent need for novel interventions to reduce CRC incidence and improve clinical outcomes. Modulating the intestinal microbiota has emerged as a promising approach for CRC prevention and treatment. Current research efforts in CRC probiotics primarily focus on reducing the incidence of CRC, alleviating treatment-related side effects, and potentiating the efficacy of anticancer therapy, which is the key to successful translation to clinical practice. This paper aims to review the traditional probiotics and new interventions, such as next-generation probiotics and postbiotics, in the context of CRC. The underlying mechanisms of probiotic anti-cancer effects are also discussed, including the restoration of microbial composition, reinforcement of gut barrier integrity, induction of cancer cell apoptosis, inactivation of carcinogens, and modulation of host immune response. This paper further evaluates the novel strategy of probiotics as an adjuvant therapy in boosting the efficacy of chemotherapy and immunotherapy. Despite all the promising findings presented in studies, the evaluation of potential risks, optimization of delivery methods, and consideration of intra-patient variability of gut microbial baseline must be thoroughly interpreted before bench-to-bedside translation.
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Affiliation(s)
- Suki Ha
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xiang Zhang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jun Yu
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
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Jiang S, Ma W, Ma C, Zhang Z, Zhang W, Zhang J. An emerging strategy: probiotics enhance the effectiveness of tumor immunotherapy via mediating the gut microbiome. Gut Microbes 2024; 16:2341717. [PMID: 38717360 PMCID: PMC11085971 DOI: 10.1080/19490976.2024.2341717] [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: 01/29/2024] [Accepted: 04/08/2024] [Indexed: 05/12/2024] Open
Abstract
The occurrence and progression of tumors are often accompanied by disruptions in the gut microbiota. Inversely, the impact of the gut microbiota on the initiation and progression of cancer is becoming increasingly evident, influencing the tumor microenvironment (TME) for both local and distant tumors. Moreover, it is even suggested to play a significant role in the process of tumor immunotherapy, contributing to high specificity in therapeutic outcomes and long-term effectiveness across various cancer types. Probiotics, with their generally positive influence on the gut microbiota, may serve as effective agents in synergizing cancer immunotherapy. They play a crucial role in activating the immune system to inhibit tumor growth. In summary, this comprehensive review aims to provide valuable insights into the dynamic interactions between probiotics, gut microbiota, and cancer. Furthermore, we highlight recent advances and mechanisms in using probiotics to improve the effectiveness of cancer immunotherapy. By understanding these complex relationships, we may unlock innovative approaches for cancer diagnosis and treatment while optimizing the effects of immunotherapy.
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Affiliation(s)
- Shuaiming Jiang
- School of Food Science and Engineering, Hainan University, Haikou, PR China
| | - Wenyao Ma
- School of Food Science and Engineering, Hainan University, Haikou, PR China
| | - Chenchen Ma
- Department of Human Cell Biology and Genetics, Southern University of Science and Technology, Shenzhen, PR China
| | - Zeng Zhang
- School of Food Science and Engineering, Hainan University, Haikou, PR China
| | - Wanli Zhang
- School of Food Science and Engineering, Hainan University, Haikou, PR China
| | - Jiachao Zhang
- School of Food Science and Engineering, Hainan University, Haikou, PR China
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Chen Y, Wang X, Ye Y, Ren Q. Gut microbiota in cancer: insights on microbial metabolites and therapeutic strategies. Med Oncol 2023; 41:25. [PMID: 38129370 DOI: 10.1007/s12032-023-02249-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 11/11/2023] [Indexed: 12/23/2023]
Abstract
In recent years, the role of gut microbiota in cancer treatment has attracted substantial attention. It is now well established that gut microbiota and its metabolites significantly contribute to the incidence, treatment, and prognosis of various cancers. This review provides a comprehensive review on the pivotal role of gut microbiota and their metabolites in cancer initiation and progression. Furthermore, it evaluates the impact of gut microbiota on the efficacy and associated side effects of anticancer therapies, including radiotherapy, chemotherapy, and immunotherapy, thus emphasizing the clinical importance of gut microbiota reconstitution in cancer treatment.
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Affiliation(s)
- Yalan Chen
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, 730000, Gansu Province, China
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou, 730000, Gansu Province, China
| | - Xibin Wang
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, 730000, Gansu Province, China
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou, 730000, Gansu Province, China
| | - Yuwei Ye
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, 730000, Gansu Province, China
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou, 730000, Gansu Province, China
- Gansu Province Clinical Research Center for Digestive Diseases, Lanzhou University, Lanzhou, 730000, Gansu Province, China
| | - Qian Ren
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, 730000, Gansu Province, China.
- Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou, 730000, Gansu Province, China.
- Gansu Province Clinical Research Center for Digestive Diseases, Lanzhou University, Lanzhou, 730000, Gansu Province, China.
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Zhao R, Li J, Chen B, Zhao J, Hu L, Huang K, Chen Q, Yao J, Lin G, Bao L, Lu M, Wang Y, Chen G, Wu F. The enrichment of the gut microbiota Lachnoclostridium is associated with the presence of intratumoral tertiary lymphoid structures in hepatocellular carcinoma. Front Immunol 2023; 14:1289753. [PMID: 38116013 PMCID: PMC10728494 DOI: 10.3389/fimmu.2023.1289753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 11/16/2023] [Indexed: 12/21/2023] Open
Abstract
Backgrounds and aims Immunotherapies have formed an entirely new treatment paradigm for hepatocellular carcinoma (HCC). Tertiary lymphoid structure (TLS) has been associated with good response to immunotherapy in most solid tumors. Nonetheless, the role of TLS in human HCC remains controversial, and recent studies suggest that their functional heterogeneity may relate to different locations within the tumor. Exploring factors that influence the formation of TLS in HCC may provide more useful insights. However, factors affecting the presence of TLSs are still unclear. The human gut microbiota can regulate the host immune system and is associated with the efficacy of immunotherapy but, in HCC, whether the gut microbiota is related to the presence of TLS still lacks sufficient evidence. Methods We performed pathological examinations of tumor and para-tumor tissue sections. Based on the location of TLS in tissues, all patients were divided into intratumoral TLS (It-TLS) group and desertic TLS (De-TLS) group. According to the grouping results, we statistically analyzed the clinical, biological, and pathological features; preoperative gut microbiota data; and postoperative pathological features of patients. Results In a retrospective study cohort of 60 cases from a single center, differential microbiota analysis showed that compared with the De-TLS group, the abundance of Lachnoclostridium, Hungatella, Blautia, Fusobacterium, and Clostridium was increased in the It-TLS group. Among them, the enrichment of Lachnoclostridium was the most significant and was unrelated to the clinical, biological, and pathological features of the patients. It can be seen that the difference in abundance levels of microbiota is related to the presence of TLS. Conclusion Our findings prove the enrichment of Lachnoclostridium-dominated gut microbiota is associated with the presence of It-TLS in HCC patients.
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Affiliation(s)
- Rui Zhao
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jiacheng Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Bo Chen
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jungang Zhao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Leyin Hu
- Department of Pathology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Kate Huang
- Department of Pathology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Qiwen Chen
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jiangqiao Yao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ganglian Lin
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lishimeng Bao
- The Second Clinical College, Wenzhou Medical University, Wenzhou, China
| | - Mengmeng Lu
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yi Wang
- Department of Epidemiology and Biostatistics, School of Public Health and Management, Wenzhou Medical University, Wenzhou, China
- Zhejiang-Germany Interdisciplinary Joint Laboratory of Hepatobiliary-Pancreatic Tumor and Bioengineering, Wenzhou, China
| | - Gang Chen
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
- Zhejiang-Germany Interdisciplinary Joint Laboratory of Hepatobiliary-Pancreatic Tumor and Bioengineering, Wenzhou, China
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Fang Wu
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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Jain R, Hadjigeorgiou A, Harkos C, Mishra A, Morad G, Johnson S, Ajami N, Wargo J, Munn L, Stylianopoulos T. Dissecting the Impact of the Gut Microbiome on Cancer Immunotherapy. RESEARCH SQUARE 2023:rs.3.rs-3647386. [PMID: 38076985 PMCID: PMC10705708 DOI: 10.21203/rs.3.rs-3647386/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
The gut microbiome has emerged as a key regulator of response to cancer immunotherapy. However, there is a gap in our understanding of the underlying mechanisms by which the microbiome influences immunotherapy. To this end, we developed a mathematical model based on i) gut microbiome data derived from preclinical studies on melanomas after fecal microbiota transplant, ii) mechanistic modeling of antitumor immune response, and iii) robust association analysis of murine and human microbiome profiles with model-predicted immune profiles. Using our model, we could distill the complexity of these murine and human studies on microbiome modulation in terms of just two model parameters: the activation and killing rate constants of immune cells. We further investigated associations between specific bacterial taxonomies and antitumor immunity and immunotherapy efficacy. This model can guide the design of studies to refine and validate mechanistic links between the microbiome and immune system.
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Affiliation(s)
- Rakesh Jain
- Massachusetts General Hospital and Harvard Medical School
| | | | | | | | - Golnaz Morad
- The University of Texas MD Anderson Cancer Center
| | | | - Nadim Ajami
- The University of Texas MD Anderson Cancer Center
| | | | - Lance Munn
- Massachusetts General Hospital and Harvard Medical School
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Huang J, Gong C, Zhou A. Modulation of gut microbiota: a novel approach to enhancing the effects of immune checkpoint inhibitors. Ther Adv Med Oncol 2023; 15:17588359231204854. [PMID: 37841750 PMCID: PMC10571694 DOI: 10.1177/17588359231204854] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 09/14/2023] [Indexed: 10/17/2023] Open
Abstract
Although immune checkpoint inhibitors (ICIs) have greatly improved the prognosis of some cancer patients, the majority still fail to respond adequately, and the available biomarkers cannot reliably predict drug efficacy. The gut microbiota has received widespread attention among the various intrinsic and extrinsic factors contributing to drug resistance. As an essential regulator of physiological function, the impact of gut microbiota on host immunity and response to cancer therapy is increasingly recognized. Several studies have demonstrated significant differences in gut microbiota between responders and nonresponders. The gut microbiota associated with better clinical outcomes is called 'favorable gut microbiota'. Significantly, interventions can alter the gut microbiota. By shifting the gut microbiota to the 'favorable' one through various modifications, preclinical and clinical studies have yielded more pronounced responses and better clinical outcomes when combined with ICIs treatment, providing novel approaches to improve the efficacy of cancer immunotherapy. These findings may be attributed to the effects of gut microbiota and its metabolites on the immune microenvironment and the systemic immune system, but the underlying mechanisms remain to be discovered. In this review, we summarize the clinical evidence that the gut microbiota is strongly associated with the outcomes of ICI treatment and describe the gut microbiota characteristics associated with better clinical outcomes. We then expand on the current prevalent modalities of gut microbiota regulation, provide a comprehensive overview of preclinical and clinical research advances in improving the therapeutic efficacy and prognosis of ICIs by modulating gut microbiota, and suggest fundamental questions we need to address and potential directions for future research expansion.
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Affiliation(s)
- Jinglong Huang
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Caifeng Gong
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Aiping Zhou
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
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