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Ruiz-Saavedra S, Zapico A, González S, Salazar N, de los Reyes-Gavilán CG. Role of the intestinal microbiota and diet in the onset and progression of colorectal and breast cancers and the interconnection between both types of tumours. MICROBIOME RESEARCH REPORTS 2023; 3:6. [PMID: 38455079 PMCID: PMC10917624 DOI: 10.20517/mrr.2023.36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 11/12/2023] [Accepted: 11/21/2023] [Indexed: 03/09/2024]
Abstract
Colorectal cancer (CRC) is among the leading causes of mortality in adults of both sexes worldwide, while breast cancer (BC) is among the leading causes of death in women. In addition to age, gender, and genetic predisposition, environmental and lifestyle factors exert a strong influence. Global diet, including alcohol consumption, is one of the most important modifiable factors affecting the risk of CRC and BC. Western dietary patterns promoting high intakes of xenobiotics from food processing and ethanol have been associated with increased cancer risk, whereas the Mediterranean diet, generally leading to a higher intake of polyphenols and fibre, has been associated with a protective effect. Gut dysbiosis is a common feature in CRC, where the usual microbiota is progressively replaced by opportunistic pathogens and the gut metabolome is altered. The relationship between microbiota and BC has been less studied. The estrobolome is the collection of genes from intestinal bacteria that can metabolize oestrogens. In a dysbiosis condition, microbial deconjugating enzymes can reactivate conjugated-deactivated oestrogens, increasing the risk of BC. In contrast, intestinal microorganisms can increase the biological activity and bioavailability of dietary phytochemicals through diverse microbial metabolic transformations, potentiating their anticancer activity. Members of the intestinal microbiota can increase the toxicity of xenobiotics through metabolic transformations. However, most of the microorganisms involved in diet-microbiota interactions remain poorly characterized. Here, we provide an overview of the associations between microbiota and diet in BC and CRC, considering the diverse types and heterogeneity of these cancers and their relationship between them and with gut microbiota.
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Affiliation(s)
- Sergio Ruiz-Saavedra
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), Villaviciosa 33300, Spain
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo 33011, Spain
| | - Aida Zapico
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo 33011, Spain
- Department of Functional Biology, University of Oviedo, Oviedo 33006, Spain
| | - Sonia González
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo 33011, Spain
- Department of Functional Biology, University of Oviedo, Oviedo 33006, Spain
| | - Nuria Salazar
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), Villaviciosa 33300, Spain
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo 33011, Spain
| | - Clara G. de los Reyes-Gavilán
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), Villaviciosa 33300, Spain
- Diet, Microbiota and Health Group, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo 33011, Spain
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Xiao F, Hu B, Si Z, Yang H, Xie J. Sirtuin 6 is a negative regulator of the anti-tumor function of natural killer cells in murine inflammatory colorectal cancer. Mol Immunol 2023; 158:68-78. [PMID: 37146480 DOI: 10.1016/j.molimm.2023.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/20/2023] [Accepted: 04/30/2023] [Indexed: 05/07/2023]
Abstract
The immune system plays a crucial role in controlling colorectal cancer (CRC) development. Natural killer (NK) cells are tumoricidal but undergo exhaustion in CRC patients. The current research aims to understand the role of sirtuin 6 (SIRT6) in CRC-associated NK cell exhaustion in a murine inflammatory colorectal cancer model. To this end, inflammatory CRC was induced by treating mice with azoxymethane plus dextran sulfate sodium. The expression of SIRT6 in NK cells in murine mesenteric lymph nodes (mLNs) and the CRC tissue was characterized by Immunoblotting. SIRT6 knockdown was achieved by lentiviral transduction of murine splenic NK cells, followed by evaluation of NK cell proliferation and the expression of cytotoxic mediators using flow cytometry. NK cell cytotoxicity was measured by cytotoxicity assays. Adoptive transfer of murine NK cells was applied to analyze the effect of SIRT6 knockdown in vivo. We found that SIRT6 was up-regulated in infiltrating NK cells in the murine CRC tissue, especially NK cells with an exhausted phenotype and impaired cytotoxicity. SIRT6 knockdown significantly boosted murine splenic NK cell functionality, as evidenced by accelerated proliferation, increased production of cytotoxic mediators, and higher tumoricidal activity both in vitro and in vivo. Furthermore, the adoptive transfer of SIRT6-knockdown NK cells into CRC-bearing mice effectively suppressed CRC progression. Therefore, SIRT6 up-regulation is essential for murine NK cell exhaustion in CRC because it impedes the tumoricidal activity of murine NK cells. Artificial SIRT6 down-regulation could boost the function of infiltrating NK cells to oppress CRC progression in mice.
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Affiliation(s)
- Fei Xiao
- The Division of Gastrointestinal Surgery, Wuhan Fourth Hospital (Tongji Medical College Affiliated Wuhan Puai Hospital), 473 Hanzheng Street, Qiaokou District, Wuhan, Hubei Province 430033, China
| | - Bo Hu
- The Division of Gastrointestinal Surgery, Wuhan Fourth Hospital (Tongji Medical College Affiliated Wuhan Puai Hospital), 473 Hanzheng Street, Qiaokou District, Wuhan, Hubei Province 430033, China
| | - Zhilong Si
- The Division of Gastrointestinal Surgery, Wuhan Fourth Hospital (Tongji Medical College Affiliated Wuhan Puai Hospital), 473 Hanzheng Street, Qiaokou District, Wuhan, Hubei Province 430033, China
| | - Huanbin Yang
- The Division of Gastrointestinal Surgery, Wuhan Fourth Hospital (Tongji Medical College Affiliated Wuhan Puai Hospital), 473 Hanzheng Street, Qiaokou District, Wuhan, Hubei Province 430033, China
| | - Jun Xie
- The Division of Gastrointestinal Surgery, Wuhan Fourth Hospital (Tongji Medical College Affiliated Wuhan Puai Hospital), 473 Hanzheng Street, Qiaokou District, Wuhan, Hubei Province 430033, China.
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Bähr I, Jaeschke L, Nimptsch K, Janke J, Herrmann P, Kobelt D, Kielstein H, Pischon T, Stein U. Obesity, colorectal cancer and MACC1 expression: A possible novel molecular association. Int J Oncol 2022; 60:17. [PMID: 35014688 PMCID: PMC8776326 DOI: 10.3892/ijo.2022.5307] [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: 10/21/2021] [Accepted: 12/06/2021] [Indexed: 11/23/2022] Open
Abstract
Obesity is a major and increasing public health concern, associated with an increased risk of and mortality from several types of cancer including colorectal cancer (CRC), being associated with cancer progression, metastasis and resistance to therapy. It was hypothesized that the expression of cancer/metastasis-inducing gene metastasis-associated in colon cancer 1 (MACC1) is increased in obesity, which may constitute a link to obesity-induced cancer. The present study thus analyzed circulating cell-free plasma MACC1 expression levels in human obese (vs. normal weight) adult individuals from independent studies, namely the Martin Luther University (MLU) study (n=32) and the Metabolic syndrome study (MetScan, Berlin) (n=191). Higher plasma MACC1 levels were found in obese individuals, increasing with a greater body fat mass and body mass index; these levels were predominantly observed in male and to a lesser extent in female individuals, although the results were not significant. A reduction in body fat mass following dietary intervention and physical exercise decreased the MACC1 expression levels in the MLU study. Furthermore, Wistar rats with diet-induced obesity exhibited slightly increased plasma MACC1 levels compared with rats of normal weight. The obese Wistar rats exposed to azoxymethane to induce colon cancer exhibited a more severe colon tumor outcome, which was associated with significantly increased MACC1 levels compared with their non-obese littermates. On the whole, the findings of the present study suggest an association between MACC1 and obesity, as well as with obesity-induced CRC.
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Affiliation(s)
- Ina Bähr
- Institute of Anatomy and Cell Biology, Medical Faculty of Martin Luther University Halle‑Wittenberg, D‑06108 Halle (Saale), Germany
| | - Lina Jaeschke
- Max‑Delbrück‑Center for Molecular Medicine in The Helmholtz Association, Molecular Epidemiology Research Group, D‑13125 Berlin, Germany
| | - Katharina Nimptsch
- Max‑Delbrück‑Center for Molecular Medicine in The Helmholtz Association, Molecular Epidemiology Research Group, D‑13125 Berlin, Germany
| | - Jürgen Janke
- Max‑Delbrück‑Center for Molecular Medicine in The Helmholtz Association, Molecular Epidemiology Research Group, D‑13125 Berlin, Germany
| | - Pia Herrmann
- Translational Oncology of Solid Tumors, Experimental and Clinical Research Center, Charité‑Universitätsmedizin Berlin and Max‑Delbrück‑Center for Molecular Medicine in The Helmholtz Association, D‑13125 Berlin, Germany
| | - Dennis Kobelt
- Translational Oncology of Solid Tumors, Experimental and Clinical Research Center, Charité‑Universitätsmedizin Berlin and Max‑Delbrück‑Center for Molecular Medicine in The Helmholtz Association, D‑13125 Berlin, Germany
| | - Heike Kielstein
- Institute of Anatomy and Cell Biology, Medical Faculty of Martin Luther University Halle‑Wittenberg, D‑06108 Halle (Saale), Germany
| | - Tobias Pischon
- Max‑Delbrück‑Center for Molecular Medicine in The Helmholtz Association, Molecular Epidemiology Research Group, D‑13125 Berlin, Germany
| | - Ulrike Stein
- Translational Oncology of Solid Tumors, Experimental and Clinical Research Center, Charité‑Universitätsmedizin Berlin and Max‑Delbrück‑Center for Molecular Medicine in The Helmholtz Association, D‑13125 Berlin, Germany
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