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Li N, Xiao C, Li Y, Zhang Y, Lin Y, Liu Q, Tang L, Xu L, Ren Z. Association of Chlamydia trachomatis Infection With Breast Cancer Risk and the Modification Effect of IL-12. Clin Breast Cancer 2024; 24:e554-e559.e1. [PMID: 38821744 DOI: 10.1016/j.clbc.2024.05.003] [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: 04/18/2024] [Accepted: 05/07/2024] [Indexed: 06/02/2024]
Abstract
BACKGROUND Chlamydia trachomatis (C. trachomatis) infection has been implicated in various cancers, yet its association with breast cancer remains unexplored. This infection triggers a cascade of immune responses primarily regulated by Interleukins-12 (IL-12). Thus, the objective of this case-control study was to investigate the link between C. trachomatis infection and breast cancer risk, as well as the modification effect of IL-12. METHODS We assessed IgG levels against C. trachomatis in serum of 1,121 women with breast cancer (861 with estrogen receptor-positive (ER+) and 260 with estrogen receptor-negative (ER-) tumors) and 400 controls in Guangzhou, China. Logistic regression models were applied to estimate the odds ratios (ORs) and 95% confidence intervals (95% CIs) for breast cancer risk in association with C. trachomatis infection. The interaction between C. trachomatis infection and IL-12 on breast cancer risk was estimated by the product terms in the logistic regression models. RESULTS Seropositivity of C. trachomatis IgG showed a slight association with an increased risk of breast cancer (OR = 1.20; 95% CI: 0.86∼1.78). This association was more pronounced among women with a higher (OR = 5.82; 95% CI: 1.31∼25.94) than a lower (OR = 0.73; 95% CI: 0.41∼1.30) level of IL-12, with a statistically significant interaction observed (Pinteraction = 0.013). In addition, C. trachomatis IgG seropositivity was related to an increased risk of breast cancer among PR+ patients (OR = 1.53; 95% CI: 1.04∼2.23). CONCLUSIONS C. trachomatis infection may contribute to the development of hormone-responsive breast cancer in women with high levels of IL-12. Further studies are needed to uncover the underlying mechanisms.
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Affiliation(s)
- Na Li
- School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Chengkun Xiao
- School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Yunqian Li
- School of Public Health, Sun Yat-sen University, Guangzhou, China; Shenzhen Pingle Orthopedic Hospital, Shenzhen, China
| | - Yixin Zhang
- School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Ying Lin
- The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Qiang Liu
- Sun Yat-Sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Luying Tang
- The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lin Xu
- School of Public Health, Sun Yat-sen University, Guangzhou, China; School of Public Health, The University of Hong Kong, Hong Kong; Institute of Applied Health Research, University of Birmingham, Birmingham, UK.
| | - Zefang Ren
- School of Public Health, Sun Yat-sen University, Guangzhou, China.
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Fu Y, Li J, Cai W, Huang Y, Liu X, Ma Z, Tang Z, Bian X, Zheng J, Jiang J, Li C. The emerging tumor microbe microenvironment: From delineation to multidisciplinary approach-based interventions. Acta Pharm Sin B 2024; 14:1560-1591. [PMID: 38572104 PMCID: PMC10985043 DOI: 10.1016/j.apsb.2023.11.018] [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: 08/28/2023] [Revised: 10/20/2023] [Accepted: 11/03/2023] [Indexed: 04/05/2024] Open
Abstract
Intratumoral microbiota has become research hotspots, and emerges as a non-negligent new component of tumor microenvironments (TME), due to its powerful influence on tumor initiation, metastasis, immunosurveillance and prognosis despite in low-biomass. The accumulations of microbes, and their related components and metabolites within tumor tissues, endow TME with additional pluralistic features which are distinct from the conventional one. Therefore, it's definitely necessary to comprehensively delineate the sophisticated landscapes of tumor microbe microenvironment, as well as their functions and related underlying mechanisms. Herein, in this review, we focused on the fields of tumor microbe microenvironment, including the heterogeneity of intratumor microbiota in different types of tumors, the controversial roles of intratumoral microbiota, the basic features of tumor microbe microenvironment (i.e., pathogen-associated molecular patterns (PAMPs), typical microbial metabolites, autophagy, inflammation, multi-faceted immunomodulation and chemoresistance), as well as the multidisciplinary approach-based intervention of tumor microbiome for cancer therapy by applying wild-type or engineered live microbes, microbiota metabolites, antibiotics, synthetic biology and rationally designed biomaterials. We hope our work will provide valuable insight to deeply understand the interplay of cancer-immune-microbial, and facilitate the development of microbes-based tumor-specific treatments.
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Affiliation(s)
- Yu Fu
- Medical Research Institute, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Jia Li
- Department of Urology, Urologic Surgery Center, Xinqiao Hospital, Third Military Medical University (Army Medical University), Chongqing 400037, China
| | - Wenyun Cai
- Medical Research Institute, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Yulan Huang
- Medical Research Institute, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Xinlong Liu
- Medical Research Institute, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Zhongyi Ma
- Medical Research Institute, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Zhongjie Tang
- Medical Research Institute, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Xufei Bian
- Medical Research Institute, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Ji Zheng
- Department of Urology, Urologic Surgery Center, Xinqiao Hospital, Third Military Medical University (Army Medical University), Chongqing 400037, China
| | - Jiayun Jiang
- Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Chong Li
- Medical Research Institute, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
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Wang X, Zheng Y, Chen X, Peng C, Zhou S, Shen S, Zhao S, Wang T. 2bRAD-M reveals the difference in microbial distribution between cancerous and benign ovarian tissues. Front Microbiol 2023; 14:1231354. [PMID: 37692387 PMCID: PMC10484612 DOI: 10.3389/fmicb.2023.1231354] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 08/09/2023] [Indexed: 09/12/2023] Open
Abstract
The development of ovarian cancer is closely related to various factors, such as environmental, genetic and microbiological factors. In previous research, bacteria were identified in human tumors by 16S rRNA sequencing. However, the microbial biomass in tumor tissue is too low and cannot be accurately identified by 16S rRNA sequencing. In our study, we employ 2bRAD sequencing for Microbiome (2bRAD-M), a new sequencing technology capable of accurately characterizing the low biomass microbiome (bacteria, fungi and archaea) at species resolution. Here we surveyed 20 ovarian samples, including 10 ovarian cancer samples and 10 benign ovarian samples. The sequencing results showed that a total of 373 microbial species were identified in both two groups, of which 90 species shared in the two groups. The Meta statistic indicated that Chlamydophila_abortus and CAG-873_sp900550395 were increased in the ovarian cancer tissues, while Lawsonella_clevelandensis_A, Ralstonia_sp001078575, Brevundimonas_aurantiaca, Ralstonia_sp900115545, Ralstonia_pickettii, Corynebacterium_kefirresidentii, Corynebacterium_sp000478175, Brevibacillus_D_fluminis, Ralstonia_sp000620465, and Ralstonia_mannitolilytica were more abundant in the benign ovarian tissues. This is the first use of 2bRAD-M technique to provide an important hint for better understanding of the ovarian cancer microbiome.
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Affiliation(s)
- Xiaogang Wang
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
- Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Yaojun Zheng
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
- Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Xiang Chen
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
- Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Chen Peng
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
- Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Shizhen Zhou
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
- Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Sunan Shen
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
- Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Shuli Zhao
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Tingting Wang
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China
- Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
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Rodrigues R, Vieira-Baptista P, Catalão C, Borrego MJ, Sousa C, Vale N. Chlamydial and Gonococcal Genital Infections: A Narrative Review. J Pers Med 2023; 13:1170. [PMID: 37511783 PMCID: PMC10381338 DOI: 10.3390/jpm13071170] [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: 05/02/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
Sexually transmitted infections (STIs) constitute one of the leading causes of disease burden worldwide, leading to considerable morbidity, mortality, health expenditures, and stigma. Of note are the most common bacterial STIs, chlamydial and gonococcal infections, whose etiological agents are Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG), respectively. Despite being usually asymptomatic, in some cases these infections can be associated with long-term severe complications, such as pelvic inflammatory disease, chronic pelvic pain, infertility, ectopic pregnancy, and increased risk of other STIs acquisition. As the symptoms, when present, are usually similar in both infections, and in most of the cases these infections co-occur, the dual-test strategy, searching for both pathogens, should be preferred. In line with this, herein we focus on the main aspects of CT and NG infections, the clinical symptoms as well as the appropriate state-of-the-art diagnostic tests and treatment. Cost-effective strategies for controlling CT and NG infections worldwide are addressed. The treatment for both infections is based on antibiotics. However, the continuing global rise in the incidence of these infections, concomitantly with the increased risk of antibiotics resistance, leads to difficulties in their control, particularly in the case of NG infections. We also discuss the potential mechanism of tumorigenesis related to CT infections. The molecular bases of CT and NG infections are addressed, as they should provide clues for control or eradication, through the development of new drugs and/or effective vaccines against these pathogens.
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Affiliation(s)
- Rafaela Rodrigues
- OncoPharma Research Group, Center for Health Technology and Services Research (CINTESIS), Rua Doutor Plácido da Costa, 4200-450 Porto, Portugal
- CINTESIS@RISE, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
- Molecular Diagnostics Laboratory, Unilabs Portugal, Centro Empresarial Lionesa Porto, Rua Lionesa, 4465-671 Leça do Balio, Portugal
| | - Pedro Vieira-Baptista
- Department of Gynecology-Obstetrics and Pediatrics, Faculdade de Medicina da Universidade do Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
- Lower Genital Tract Unit, Centro Hospitalar de São João, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Carlos Catalão
- Roche Sistemas de Diagnósticos, Estrada Nacional, 2720-413 Amadora, Portugal
| | - Maria José Borrego
- Laboratório Nacional de Referência das Infeções Sexualmente Transmissíveis, Instituto Nacional de Saúde Dr. Ricardo Jorge, Avenida Padre Cruz, 1649-016 Lisboa, Portugal
| | - Carlos Sousa
- Molecular Diagnostics Laboratory, Unilabs Portugal, Centro Empresarial Lionesa Porto, Rua Lionesa, 4465-671 Leça do Balio, Portugal
| | - Nuno Vale
- OncoPharma Research Group, Center for Health Technology and Services Research (CINTESIS), Rua Doutor Plácido da Costa, 4200-450 Porto, Portugal
- CINTESIS@RISE, Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
- Department of Community Medicine, Health Information and Decision (MEDCIDS), Faculty of Medicine, University of Porto, Rua Doutor Plácido da Costa, 4200-450 Porto, Portugal
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Liu Y, Niu L, Li N, Wang Y, Liu M, Su X, Bao X, Yin B, Shen S. Bacterial-Mediated Tumor Therapy: Old Treatment in a New Context. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205641. [PMID: 36908053 PMCID: PMC10131876 DOI: 10.1002/advs.202205641] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 02/09/2023] [Indexed: 06/18/2023]
Abstract
Targeted therapy and immunotherapy have brought hopes for precision cancer treatment. However, complex physiological barriers and tumor immunosuppression result in poor efficacy, side effects, and resistance to antitumor therapies. Bacteria-mediated antitumor therapy provides new options to address these challenges. Thanks to their special characteristics, bacteria have excellent ability to destroy tumor cells from the inside and induce innate and adaptive antitumor immune responses. Furthermore, bacterial components, including bacterial vesicles, spores, toxins, metabolites, and other active substances, similarly inherit their unique targeting properties and antitumor capabilities. Bacteria and their accessory products can even be reprogrammed to produce and deliver antitumor agents according to clinical needs. This review first discusses the role of different bacteria in the development of tumorigenesis and the latest advances in bacteria-based delivery platforms and the existing obstacles for application. Moreover, the prospect and challenges of clinical transformation of engineered bacteria are also summarized.
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Affiliation(s)
- Yao Liu
- Key Laboratory of Spine and Spinal Cord Injury Repairand Regeneration of Ministry of EducationOrthopaedic Department of Tongji Hospital, The Institute for Biomedical Engineering and Nano ScienceTongji University School of MedicineShanghai200092P. R. China
- Pharmacy Department and Center for Medical Research and InnovationShanghai Pudong HospitalFudan University Pudong Medical CenterShanghai201399China
| | - Lili Niu
- Central LaboratoryFirst Affiliated HospitalInstitute (College) of Integrative MedicineDalian Medical UniversityDalian116021China
| | - Nannan Li
- Central LaboratoryFirst Affiliated HospitalInstitute (College) of Integrative MedicineDalian Medical UniversityDalian116021China
| | - Yang Wang
- Central LaboratoryFirst Affiliated HospitalInstitute (College) of Integrative MedicineDalian Medical UniversityDalian116021China
| | - Mingyang Liu
- Department of Surgical Oncology and General SurgeryThe First Hospital of China Medical University155 North Nanjing Street, Heping DistrictShenyang110001China
| | - Xiaomin Su
- Central LaboratoryFirst Affiliated HospitalInstitute (College) of Integrative MedicineDalian Medical UniversityDalian116021China
| | - Xuhui Bao
- Institute for Therapeutic Cancer VaccinesFudan University Pudong Medical CenterShanghai201399China
| | - Bo Yin
- Institute for Therapeutic Cancer Vaccines and Department of OncologyFudan University Pudong Medical CenterShanghai201399China
| | - Shun Shen
- Pharmacy Department and Center for Medical Research and InnovationShanghai Pudong HospitalFudan University Pudong Medical CenterShanghai201399China
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Kalia VC, Lee JK, Rangappa KS, Gupta VK. Special issue Microbes in Cancer Research in 'Seminar in Cancer Biology' 2021. Semin Cancer Biol 2022; 86:1102-1104. [PMID: 34979275 DOI: 10.1016/j.semcancer.2021.12.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Vipin Chandra Kalia
- Department of Chemical Engineering, Konkuk University, Seoul, 05029, Republic of Korea.
| | - Jung-Kul Lee
- Department of Chemical Engineering, Konkuk University, Seoul, 05029, Republic of Korea.
| | | | - Vijai Kumar Gupta
- Center for Safe and Improved Food, & Biorefining and Advanced Materials Research Center, SRUC, Kings Buildings, West Mains Road, Edinburgh, EH9 3JG, UK.
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Wang J, Wang K. New insights into Chlamydia pathogenesis: Role of leukemia inhibitory factor. Front Cell Infect Microbiol 2022; 12:1029178. [PMID: 36329823 PMCID: PMC9623337 DOI: 10.3389/fcimb.2022.1029178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 09/27/2022] [Indexed: 11/13/2022] Open
Abstract
Chlamydia trachomatis (Ct) is the leading cause of bacterial sexually transmitted infections worldwide. Since the symptoms of Ct infection are often subtle or absent, most people are unaware of their infection until they are tested or develop severe complications such as infertility. It is believed that the primary culprit of Ct-associated tissue damage is unresolved chronic inflammation, resulting in aberrant production of cytokines, chemokines, and growth factors, as well as dysregulated tissue influx of innate and adaptive immune cells. A member of the IL-6 cytokine family, leukemia inhibitory factor (LIF), is one of the cytokines induced by Ct infection but its role in Ct pathogenesis is unclear. In this article, we review the biology of LIF and LIF receptor (LIFR)-mediated signaling pathways, summarize the physiological role of LIF in the reproductive system, and discuss the impact of LIF in chronic inflammatory conditions and its implication in Ct pathogenesis. Under normal circumstances, LIF is produced to maintain epithelial homeostasis and tissue repair, including the aftermath of Ct infection. However, LIF/LIFR-mediated signaling – particularly prolonged strong signaling – can gradually transform the microenvironment of the fallopian tube by altering the fate of epithelial cells and the cellular composition of epithelium. This harmful transformation of epithelium may be a key process that leads to an enhanced risk of infertility, ectopic pregnancy and cancer following Ct infection.
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Affiliation(s)
- Jun Wang
- Canadian Center for Vaccinology, Halifax, NS, Canada
- Department of Microbiology & Immunology, Halifax, NS, Canada
- Department of Pediatrics, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada
- Izaak Walton Killam (IWK) Health Centre, Halifax, NS, Canada
- *Correspondence: Jun Wang,
| | - Katherine Wang
- Canadian Center for Vaccinology, Halifax, NS, Canada
- Department of Microbiology & Immunology, Halifax, NS, Canada
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Chlamydia trachomatis as a Current Health Problem: Challenges and Opportunities. Diagnostics (Basel) 2022; 12:diagnostics12081795. [PMID: 35892506 PMCID: PMC9331119 DOI: 10.3390/diagnostics12081795] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/08/2022] [Accepted: 07/19/2022] [Indexed: 11/16/2022] Open
Abstract
Chlamydia is one of the most common sexually transmitted bacterial infections (STIs) worldwide. It is caused by Chlamydia trachomatis (CT), which is an obligate intracellular bacterium. In some cases, it can occur in coinfection with other parasites, increasing the pathologic potential of the infection. The treatment is based on antibiotic prescription; notwithstanding, the infection is mostly asymptomatic, which increases the risk of transmission. Therefore, some countries have implemented Chlamydia Screening Programs in order to detect undiagnosed infections. However, in Portugal, there is no CT screening plan within the National Health Service. There is no awareness in the general healthcare about the true magnitude of this issue because most of the methods used are not Nucleic Acid Amplification Technology-based and, therefore, lack sensitivity, resulting in underreporting infection cases. CT infections are also associated with possible long-term severe injuries. In detail, persistent infection triggers an inflammatory milieu and can be related to severe sequels, such as infertility. This infection could also trigger gynecologic tumors in women, evidencing the urgent need for cost-effective screening programs worldwide in order to detect and treat these individuals adequately. In this review, we have focused on the success of an implemented screening program that has been reported in the literature, the efforts made concerning the vaccine discovery, and what is known regarding CT infection. This review supports the need for further fundamental studies in this area in order to eradicate this infection and we also suggest the implementation of a Chlamydia Screening Program in Portugal.
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DiMaio D, Emu B, Goodman AL, Mothes W, Justice A. Cancer Microbiology. J Natl Cancer Inst 2022; 114:651-663. [PMID: 34850062 PMCID: PMC9086797 DOI: 10.1093/jnci/djab212] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/18/2021] [Accepted: 11/15/2021] [Indexed: 12/12/2022] Open
Abstract
Microbes play important roles in cancer from direct carcinogenic effects to their use in treatment. Cancers caused by microorganisms account for approximately 15% of cancers, primarily in low- and middle-income countries. Unique features of infectious carcinogens include their transmissibility, mutability, and specific immune interactions, which provide challenges and opportunities for cancer prevention and treatment. For these agents, infection control through exposure reduction, antivirals, antibiotics, and vaccines is cancer control. In addition, developing evidence suggests that microorganisms including the human microbiome can indirectly modulate cancer formation and influence the effectiveness and toxicity of cancer treatments. Finally, microorganisms themselves can be used to prevent or treat cancer. The convergence of these factors signals the emergence of a new field, cancer microbiology. Recognition of cancer microbiology will spur research, stimulate cross-disciplinary training, inform drug development, and improve public health.
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Affiliation(s)
- Daniel DiMaio
- Department of Genetics, Yale School of Medicine, New Haven, CT, USA
- Department of Therapeutic Radiology, Yale School of Medicine, New Haven, CT, USA
- Department of Molecular Biophysics & Biochemistry, Yale University, New Haven, CT, USA
- Yale Cancer Center, New Haven, CT, USA
| | - Brinda Emu
- Yale Cancer Center, New Haven, CT, USA
- Department of Internal Medicine, Section of Infectious Diseases, Yale School of Medicine, New Haven, CT, USA
| | - Andrew L Goodman
- Yale Cancer Center, New Haven, CT, USA
- Department of Microbial Pathogenesis, Yale University, New Haven, CT, USA
| | - Walther Mothes
- Yale Cancer Center, New Haven, CT, USA
- Department of Microbial Pathogenesis, Yale University, New Haven, CT, USA
| | - Amy Justice
- Yale Cancer Center, New Haven, CT, USA
- Department of General Medicine, Yale University, VA Medical Center, New Haven, CT, USA
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Correlation between RASSF1A Methylation in Cell-Free DNA and the Prognosis of Cancer Patients: A Systematic Review and Meta-Analysis. JOURNAL OF ONCOLOGY 2022; 2022:3458420. [PMID: 35528240 PMCID: PMC9071870 DOI: 10.1155/2022/3458420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/18/2022] [Accepted: 04/07/2022] [Indexed: 11/17/2022]
Abstract
Background Although the effects of methylation of the Ras association domain-containing protein 1 isoform A (RASSF1A) gene in cell-free DNA on the outcomes of patients with different types of cancer have been reported, the results are inconsistent. Objective : To explore the relationships between RASSF1A methylation in cell-free DNA and the outcomes of cancer patients. Methods The PubMed, Embase, and Web of Science databases were searched for papers related to this topic on December 8, 2021. The retrieved articles were screened by two independent researchers, following which the methodological quality of the selected studies was evaluated using the Newcastle-Ottawa Scale. Additionally, hazard ratios were calculated, and publication bias of the studies was determined using Egger's test. Results Nine relevant publications involving a combined total of 1254 patients with different types of cancer were included in this study. The combined results of the random effects models yielded a hazard ratio of 1.73 (95% confidence interval: 1.31, 2.29; P < 0.001), which suggested there was a significant association between RASSF1A methylation and overall survival, and patients with an RASSF1A methylation status had a significantly increased risk of total death. Moreover, the Egger test result suggested there was no significant publication bias among the included studies. Conclusions The methylation of RASSF1A in cell-free DNA in cancer patients was observably associated with an increased risk of poor overall survival.
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