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Shi Z, Li Z, Zhang M. Emerging roles of intratumor microbiota in cancer: tumorigenesis and management strategies. J Transl Med 2024; 22:837. [PMID: 39261861 PMCID: PMC11391643 DOI: 10.1186/s12967-024-05640-7] [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: 06/10/2024] [Accepted: 08/26/2024] [Indexed: 09/13/2024] Open
Abstract
The intricate interplay between the host and its microbiota has garnered increasing attention in the past decade. Specifically, the emerging recognition of microorganisms within diverse cancer tissues, previously presumed sterile, has ignited a resurgence of enthusiasm and research endeavors. Four potential migratory routes have been identified as the sources of intratumoral microbial "dark matter," including direct invasion of mucosal barriers, spreading from normal adjacent tissue, hematogenous spread, and lymphatic drainage, which contribute to the highly heterogeneous features of intratumor microbiota. Importantly, multitudes of studies delineated the roles of intratumor microbiota in cancer initiation and progression, elucidating underlying mechanisms such as genetic alterations, epigenetic modifications, immune dysfunctions, activating oncogenic pathways, and inducing metastasis. With the deepening understanding of intratumoral microbial composition, novel microbiota-based strategies for early cancer diagnosis and prognostic stratification continue to emerge. Furthermore, intratumor microbiota exerts significant influence on the efficacy of cancer therapeutics, particularly immunotherapy, making it an enticing target for intervention in cancer treatment. In this review, we present a comprehensive discussion of the current understanding pertaining to the developmental history, heterogeneous profiles, underlying originations, and carcinogenic mechanisms of intratumor microbiota, and uncover its potential predictive and intervention values, as well as several inevitable challenges as a target for personalized cancer management strategies.
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Affiliation(s)
- Zhuangzhuang Shi
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Lymphoma Diagnosis and Treatment Centre of Henan Province, Zhengzhou, 450000, China
| | - Zhaoming Li
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
- Lymphoma Diagnosis and Treatment Centre of Henan Province, Zhengzhou, 450000, China.
| | - Mingzhi Zhang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
- Lymphoma Diagnosis and Treatment Centre of Henan Province, Zhengzhou, 450000, China.
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Narii N, Zha L, Sobue T, Kitamura T, Komatsu M, Shimomura Y, Shiba S, Mizutani S, Yamada T, Yachida S. Intestinal Bacteria Fluctuating in Early-Stage Colorectal Cancer Carcinogenesis are Associated with Diet in Healthy Adults. Nutr Cancer 2024; 76:521-528. [PMID: 38642022 DOI: 10.1080/01635581.2024.2344257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 04/06/2024] [Accepted: 04/12/2024] [Indexed: 04/22/2024]
Abstract
This hospital-based, cross-sectional study aimed to explore the association between diet and fluctuating intestinal bacteria in early-stage colorectal cancer (CRC) (Atopobium parvulum, Actinomyces odontolyticus, Solobacterium moorei, and Bifidobacterium longum). Healthy participants (n = 212) who underwent total colonoscopy at National Cancer Center Hospital (Tokyo, Japan) were divided into two groups according to the relative abundance of bacteria in their feces: those in the top 25% of relative bacterial abundance as cases and the bottom 25% as controls. The participants were divided into three groups (low, medium, and high) according to their intake of food groups associated with CRC. Multivariable logistic regression analysis was conducted to estimate the association between dietary intake and higher relative abundance of bacteria. Dairy products were inversely associated with a higher relative abundance of A. parvulum, A. odontolyticus, and S. moorei, with odds ratios (high vs. low) and 95% confidence interval as follows: 0.16 (0.06-0.44), 0.25 (0.08-0.82), and 0.29 (0.11-0.78), respectively. Additionally, dietary fiber was inversely associated with a higher relative abundance of S.moorei (0.29 [0.11-0.78]). No association was observed between diet and B.longum. In conclusion, healthy adults with a higher intake of dairy products and fiber had lower odds of having a higher relative abundance of CRC-associated microbiota.
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Affiliation(s)
- Nobuhiro Narii
- Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Ling Zha
- Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Tomotaka Sobue
- Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Tetsuhisa Kitamura
- Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Masayo Komatsu
- Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Yoshimitsu Shimomura
- Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Satoshi Shiba
- Division of Cancer Genomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Sayaka Mizutani
- School of Life Science and Technology, Tokyo Institute of Technology, Tokyo, Japan
| | - Takuji Yamada
- School of Life Science and Technology, Tokyo Institute of Technology, Tokyo, Japan
| | - Shinichi Yachida
- Department of Cancer Genome Informatics, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Osaka, Japan
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Breau KA. Actinomyces odontolyticus: From Carries to Colorectal Cancer. Cell Mol Gastroenterol Hepatol 2024; 17:879-880. [PMID: 38403274 PMCID: PMC11103176 DOI: 10.1016/j.jcmgh.2024.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/27/2024]
Affiliation(s)
- Keith A Breau
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
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