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Muñoz-Medel M, Pinto MP, Goralsky L, Cáceres M, Villarroel-Espíndola F, Manque P, Pinto A, Garcia-Bloj B, de Mayo T, Godoy JA, Garrido M, Retamal IN. Porphyromonas gingivalis, a bridge between oral health and immune evasion in gastric cancer. Front Oncol 2024; 14:1403089. [PMID: 38807771 PMCID: PMC11130407 DOI: 10.3389/fonc.2024.1403089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 05/02/2024] [Indexed: 05/30/2024] Open
Abstract
Porphyromonas gingivalis (P. gingivalis) is a gram-negative oral pathogen associated with chronic periodontitis. Previous studies have linked poor oral health and periodontitis with oral cancer. Severe cases of periodontal disease can result in advanced periodontitis, leading to tissue degradation, tooth loss, and may also correlate with higher gastric cancer (GC) risk. In fact, tooth loss is associated with an elevated risk of cancer. However, the clinical evidence for this association remains inconclusive. Periodontitis is also characterized by chronic inflammation and upregulation of members of the Programmed Death 1/PD1 Ligand 1 (PD1/PDL1) axis that leads to an immunosuppressive state. Given that chronic inflammation and immunosuppression are conditions that facilitate cancer progression and carcinogenesis, we hypothesize that oral P. gingivalis and/or its virulence factors serve as a mechanistic link between oral health and gastric carcinogenesis/GC progression. We also discuss the potential impact of P. gingivalis' virulence factors (gingipains, lipopolysaccharide (LPS), and fimbriae) on inflammation and the response to immune checkpoint inhibitors in GC which are part of the current standard of care for advanced stage patients.
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Affiliation(s)
- Matías Muñoz-Medel
- Precision Oncology Center, School of Medicine, Faculty of Medicine and Health Sciences, Universidad Mayor, Santiago, Chile
| | - Mauricio P. Pinto
- Support Team for Oncological Research and Medicine (STORM), Santiago, Chile
| | - Lauren Goralsky
- Department of Biological Sciences, Columbia University, New York, NY, United States
| | - Mónica Cáceres
- Millennium Nucleus of Ion Channel-Associated Diseases (MiNICAD), Santiago, Chile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | | | - Patricio Manque
- Precision Oncology Center, School of Medicine, Faculty of Medicine and Health Sciences, Universidad Mayor, Santiago, Chile
| | - Andrés Pinto
- Department of Oral and Maxillofacial Medicine and Diagnostic Sciences, Case Western Reserve University School of Dental Medicine, Cleveland, OH, United States
| | - Benjamin Garcia-Bloj
- Precision Oncology Center, School of Medicine, Faculty of Medicine and Health Sciences, Universidad Mayor, Santiago, Chile
| | - Tomas de Mayo
- Precision Oncology Center, School of Medicine, Faculty of Medicine and Health Sciences, Universidad Mayor, Santiago, Chile
| | - Juan A. Godoy
- Precision Oncology Center, School of Medicine, Faculty of Medicine and Health Sciences, Universidad Mayor, Santiago, Chile
| | - Marcelo Garrido
- Precision Oncology Center, School of Medicine, Faculty of Medicine and Health Sciences, Universidad Mayor, Santiago, Chile
| | - Ignacio N. Retamal
- Precision Oncology Center, School of Medicine, Faculty of Medicine and Health Sciences, Universidad Mayor, Santiago, Chile
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Kaliamoorthy S, Priya Sayeeram S, Gowdhaman N, Jayaraj M, Radhika B, Chellapandi S, Elumalai A, Archana SP, Raju K, Palla S. Association of Periodontal Red Complex Bacteria With the Incidence of Gastrointestinal Cancers: A Systematic Review and Meta-Analysis. Cureus 2024; 16:e59251. [PMID: 38813341 PMCID: PMC11134483 DOI: 10.7759/cureus.59251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Accepted: 04/29/2024] [Indexed: 05/31/2024] Open
Abstract
Porphyromonas gingivalis is the primary microbe in the "periodontal red complex" bacteria (PRCB) along with Tannerella forsythia and Treponema denticola, which are linked to periodontal disease (PD). These pathogens are also implicated in various systemic disorders, but their association with the incidence of gastrointestinal (GI) cancer is less explored. A systematic review followed by a meta-analysis was conducted as per standard guidelines (Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) 2022) to find this association between GI cancers and PRCB after a literature search for full-text papers in the English language (between 2010 and 2023) in databases (Cochrane Library, PubMed, and Web of Science) with suitable keywords using the Boolean search strategy. Data extraction involved titles, abstracts, and full texts retrieved and scored by the modified Newcastle-Ottawa Scale. The data were analyzed by the Review Manager (RevMan 5.2, Cochrane Collaboration, Denmark). Standard Cochran Q test and I2 statistics (for heterogeneity) and a random effects model (pooled OR with 95% CI) were applied to report results. P. gingivalis among the PRCB was linked to GI cancers (OR: 2.16; 95% CI: 1.34-3.47). T. forsythia and T. denticola did not show meaningful associations as per existing evidence for GI cancers.
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Affiliation(s)
- Sriram Kaliamoorthy
- Department of Dentistry, Vinayaka Missions Medical College and Hospital, Vinayaka Missions Research Foundation, Karaikal, IND
| | - Sugantha Priya Sayeeram
- Department of Prosthodontics, Government Dental College and Hospital, The Tamil Nadu Dr. MGR Medical University, Pudukkottai, IND
| | - N Gowdhaman
- Departmentof Physiology, Dhanalakshmi Srinivasan Medical College and Hospital, The Tamil Nadu Dr. MGR Medical University, Perambalur, IND
| | - Merlin Jayaraj
- Department of Oral and Maxillofacial Pathology, Chettinad Dental College and Research Institute, The Tamil Nadu Dr. MGR Medical University, Chennai, IND
| | - B Radhika
- Department of Periodontics, Chettinad Dental College and Research Institute, The Tamil Nadu Dr. MGR Medical University, Chennai, IND
| | - Sugirtha Chellapandi
- Department of Periodontics, Chettinad Dental College and Research Institute, The Tamil Nadu Dr. MGR Medical University, Chennai, IND
| | - Agila Elumalai
- Department of Periodontics, Chettinad Dental College and Research Institute, The Tamil Nadu Dr. MGR Medical University, Chennai, IND
| | - Sai P Archana
- Department of Oral Medicine and Radiology, Chettinad Dental College and Research Institute, The Tamil Nadu Dr. MGR Medical University, Chennai, IND
| | - Kanmani Raju
- Department of Oral Medicine and Radiology, Chettinad Dental College and Research Institute, The Tamil Nadu Dr. MGR Medical University, Chennai, IND
| | - Santosh Palla
- Department of Oral Medicine and Radiology, Sun Dental Care, Chennai, IND
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Amini M, Rezasoltani S, Asadzadeh Aghdaei H, Pourhoseingholi MA, Zali MR. Accuracy of the Discriminatory Ability of Combined Fecal Microbiota Panel in the Early Detection of Patients with Colorectal Cancer. J Gastrointest Cancer 2024; 55:332-343. [PMID: 37566155 DOI: 10.1007/s12029-023-00962-z] [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: 07/30/2023] [Indexed: 08/12/2023]
Abstract
BACKGROUND Colorectal cancer (CRC) screening and detecting it at an early stage is an effective way to decrease mortality from CRC. Colonoscopy, considered the gold standard (GS) for diagnosing the disease in many countries, has several limitations. Therefore, the main focus of this literature is to investigate the ability of combining candidate gut microbiota for early diagnosis of CRC, both in the presence and absence of GS test outcomes. METHODS We analyzed the data derived from a case-control study, including 83 screening colonoscopies conducted on subjects aged 18-92 years in Tehran, Iran. The candidate gut microbiota including, ETBF, Enterococcus faecalis, and Porphyromonas gingivalis were quantified in samples using absolute qRT PCR. The Bayesian latent class model (LCM) was employed to combine the values from the multiple bacterial markers in order to optimize the discriminatory ability compared with a single marker. RESULTS Based on Bayesian logistic regression, we discovered that family history of CRC, physical activity, cigarette smoking, and food diet were all significantly associated with an increased risk of CRC. When comparing ETBF and E. faecalis to P. gingivalis, we have observed that P. gingivalis exhibited greater predictive power in detecting high-risk individuals with CRC. As such, the sensitivity, specificity, and the area under the receiver-operating characteristics curve of combining ETBF, E. faecalis, and P. gingivalis were 98%, 96%, and 0.97, respectively. CONCLUSIONS This study suggests that the combined use of the three markers markedly improves classification performance compared to pairwise combinations, as well as individual markers, both with and without GS test outcomes. Noticeably, the triple composition of the fecal markers may serve as a reliable non-invasive indicator for the early prediction of CRC.
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Affiliation(s)
- Maedeh Amini
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Sama Rezasoltani
- Section Mass Spectrometry and Proteomics, Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Hamid Asadzadeh Aghdaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohamad Amin Pourhoseingholi
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Khan S, Banerjee G, Setua S, Jones DH, Chauhan BV, Dhasmana A, Banerjee P, Yallapu MM, Behrman S, Chauhan SC. Metagenomic analysis unveils the microbial landscape of pancreatic tumors. Front Microbiol 2023; 14:1275374. [PMID: 38179448 PMCID: PMC10764597 DOI: 10.3389/fmicb.2023.1275374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 11/20/2023] [Indexed: 01/06/2024] Open
Abstract
The composition of resident microbes in the human body is linked to various diseases and their treatment outcomes. Although studies have identified pancreatic ductal adenocarcinoma (PDAC)-associated bacterial communities in the oral and gut samples, herein, we hypothesize that the prevalence of microbiota in pancreatic tumor tissues is different as compared with their matched adjacent, histologically normal appearing tissues, and these microbial molecular signatures can be highly useful for PDAC diagnosis/prognosis. In this study, we performed comparative profiling of bacterial populations in pancreatic tumors and their respective adjacent normal tissues using 16S rRNA-based metagenomics analysis. This study revealed a higher abundance of Proteobacteria and Actinomycetota in tumor tissues compared with adjacent normal tissues. Interestingly, the linear discriminant analysis (LDA) scores unambiguously revealed an enrichment of Delftia in tumor tissues, whereas Sphingomonas, Streptococcus, and Citrobacter exhibited a depletion in tumor tissues. Furthermore, we analyzed the microbial composition between different groups of patients with different tumor differentiation stages. The bacterial genera, Delftia and Staphylococcus, were very high at the G1 stages (well differentiated) compared with G2 (well to moderate/moderately differentiated) and G3/G4 (poorly differentiated) stages. However, the abundance of Actinobacter and Cloacibacterium was found to be very high in G2 and G3, respectively. Additionally, we evaluated the correlation of programmed death-ligand (PDL1) expression with the abundance of bacterial genera in tumor lesions. Our results indicated that three genera such as Streptomyces, Cutibacterium, and Delftia have a positive correlation with PD-L1 expression. Collectively, these findings demonstrate that PDAC lesions harbor relatively different microbiota compared with their normal tumor adjacent tissues, and this information may be helpful for the diagnosis and prognosis of PADC patients.
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Affiliation(s)
- Sheema Khan
- Department of Immunology and Microbiology, School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX, United States
- South Texas Center of Excellence in Cancer Research, School of Medicine, the University of Texas Rio Grande Valley, McAllen, TX, United States
| | - Goutam Banerjee
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, 105 Agricultural Bioprocess Laboratory, Urbana, IL, United States
| | - Saini Setua
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, United States
- Center for Blood Oxygen Transport and Hemostasis (CBOTH), Department of Pediatrics, University of Maryland, Baltimore, MD, United States
| | - Daleniece Higgins Jones
- Division of Epidemiology, Biostatistics, and Environmental Health, University of Memphis, Memphis, TN, United States
- Department of Public Health, University of Tennessee, Knoxville, TN, United States
| | - Bhavin V. Chauhan
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, 105 Agricultural Bioprocess Laboratory, Urbana, IL, United States
| | - Anupam Dhasmana
- Department of Immunology and Microbiology, School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX, United States
| | - Pratik Banerjee
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, 105 Agricultural Bioprocess Laboratory, Urbana, IL, United States
- Division of Epidemiology, Biostatistics, and Environmental Health, University of Memphis, Memphis, TN, United States
| | - Murali Mohan Yallapu
- Department of Immunology and Microbiology, School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX, United States
- South Texas Center of Excellence in Cancer Research, School of Medicine, the University of Texas Rio Grande Valley, McAllen, TX, United States
| | - Stephen Behrman
- Department of Surgery, Baptist Memorial Hospital and Medical Education, Memphis, TN, United States
| | - Subhash C. Chauhan
- Department of Immunology and Microbiology, School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX, United States
- South Texas Center of Excellence in Cancer Research, School of Medicine, the University of Texas Rio Grande Valley, McAllen, TX, United States
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Ranabhotu A, Habibian N, Patel B, Farrell E, Do J, Sedghi S, Sedghi L. Case Report: Resolution of high grade anal squamous intraepithelial lesion with antibiotics proposes a new role for syphilitic infection in potentiation of HPV-associated ASCC. Front Oncol 2023; 13:1226202. [PMID: 37854673 PMCID: PMC10580285 DOI: 10.3389/fonc.2023.1226202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 09/04/2023] [Indexed: 10/20/2023] Open
Abstract
Introduction Human Papillomavirus (HPV) is the primary risk factor for the development of anal intraepithelial neoplasia (AIN) and is a leading risk factor for anogenital squamous cell carcinoma (ASCC). Despite common shared risk factors for both HPV and syphilis, co-infection is not well documented, and the role of syphilitic infection in HPV-associated AIN and ASCC potentiation is not defined. Case description/methods A 72-year-old single male presented with complaints of mild rectal pain and intermittent rectal bleeding. A flexible sigmoidoscopy was performed, and a firm 4.5cm x 3cm perianal mass was detected and superficially biopsied. Pathology findings demonstrated evidence of a high grade squamous intraepithelial lesion (HGSIL, AIN II/III/AIS) with viral cytopathic effect, consistent with HPV infection. Much of the biopsied lesion showed acanthotic squamous mucosa with intraepithelial neutrophils and abundant submucosal plasma cells, suggesting possible syphilitic involvement. Subsequent immunohistochemical staining for p16 as a surrogate marker for HPV was positive, as was an immunohistochemical stain for spirochetes, supportive of co-infection with Treponema pallidum pallidum (T. pallidum), the causative agent in venereal syphilis. The patient was referred to an infectious disease specialist for syphilitic infection and was treated with penicillin with surprisingly complete resolution of the lesion. EUAs were performed 2- and 3-months following treatment without lesion recurrence. However, one year following diagnosis, a flexible sigmoidoscopy revealed a 5 mm recurrent HPV-related low-grade AIN 1 lesion at the dentate line. Discussion Resolution of the lesion by antibiotic treatment for syphilitic infection suggested that co-infection by T. pallidum may potentiate HPV-associated squamous cell carcinoma based on histological findings. Findings from this case, as well as a review of bacterial involvement and potentiation in various cancers, are reviewed here. Such findings offer new insight regarding the role of STI-associated bacteria and HPV co-infection in the establishment of AIN and may additionally propose new treatment modalities for ASCC.
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Affiliation(s)
- A. Ranabhotu
- Gatroenterology Associates of Central Georgia, Macon, GA, United States
| | - N. Habibian
- Gatroenterology Associates of Central Georgia, Macon, GA, United States
| | - B. Patel
- Gatroenterology Associates of Central Georgia, Macon, GA, United States
| | - E. Farrell
- Gatroenterology Associates of Central Georgia, Macon, GA, United States
- Mercer University School of Medicine, Macon, GA, United States
| | - J. Do
- Advanced Pathology Solutions, Department of Gastroenterology, Little Rock, AR, United States
| | - S. Sedghi
- Gatroenterology Associates of Central Georgia, Macon, GA, United States
- Mercer University School of Medicine, Macon, GA, United States
| | - L. Sedghi
- Department of Oral and Craniofacial Sciences, University of California San Francisco School of Dentistry, San Francisco, CA, United States
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Elnaggar JH, Huynh VO, Lin D, Hillman RT, Abana CO, El Alam MB, Tomasic KC, Karpinets TV, Kouzy R, Phan JL, Wargo J, Holliday EB, Das P, Mezzari MP, Ajami NJ, Lynn EJ, Minsky BD, Morris VK, Milbourne A, Messick CA, Klopp AH, Futreal PA, Taniguchi CM, Schmeler KM, Colbert LE. HPV-related anal cancer is associated with changes in the anorectal microbiome during cancer development. Front Immunol 2023; 14:1051431. [PMID: 37063829 PMCID: PMC10090447 DOI: 10.3389/fimmu.2023.1051431] [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: 09/22/2022] [Accepted: 03/13/2023] [Indexed: 03/30/2023] Open
Abstract
Background Squamous cell carcinoma of the anus (SCCA) is a rare gastrointestinal cancer. Factors associated with progression of HPV infection to anal dysplasia and cancer are unclear and screening guidelines and approaches for anal dysplasia are less clear than for cervical dysplasia. One potential contributing factor is the anorectal microbiome. In this study, we aimed to identify differences in anal microbiome composition in the settings of HPV infection, anal dysplasia, and anal cancer in this rare disease. Methods Patients were enrolled in two prospective studies. Patients with anal dysplasia were part of a cross-sectional cohort that enrolled women with high-grade lower genital tract dysplasia. Anorectal tumor swabs were prospectively collected from patients with biopsy-confirmed locally advanced SCCA prior to receiving standard-of-care chemoradiotherapy (CRT). Patients with high-grade lower genital tract dysplasia without anal dysplasia were considered high-risk (HR Normal). 16S V4 rRNA Microbiome sequencing was performed for anal swabs. Alpha and Beta Diversity and composition were compared for HR Normal, anal dysplasia, and anal cancer. Results 60 patients with high-grade lower genital tract dysplasia were initially enrolled. Seven patients had concurrent anal dysplasia and 44 patients were considered HR Normal. Anorectal swabs from 21 patients with localized SCCA were included, sequenced, and analyzed in the study. Analysis of weighted and unweighted UniFrac distances demonstrated significant differences in microbial community composition between anal cancer and HR normal (p=0.018). LEfSe identified that all three groups exhibited differential enrichment of specific taxa. Peptoniphilus (p=0.028), Fusobacteria (p=0.0295), Porphyromonas (p=0.034), and Prevotella (p=0.029) were enriched in anal cancer specimens when compared to HR normal. Conclusion Although alpha diversity was similar between HR Normal, dysplasia and cancer patients, composition differed significantly between the three groups. Increased anorectal Peptoniphilus, Fusobacteria, Porphyromonas, and Prevotella abundance were associated with anal cancer. These organisms have been reported in various gastrointestinal cancers with roles in facilitating the proinflammatory microenvironment and neoplasia progression. Future work should investigate a potential role of microbiome analysis in screening for anal dysplasia and investigation into potential mechanisms of how these microbial imbalances influence the immune system and anal carcinogenesis.
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Affiliation(s)
- Jacob H. Elnaggar
- School of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA, United States
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Victoria O. Huynh
- School of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA, United States
| | - Daniel Lin
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - R. Tyler Hillman
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
- Cancer Prevention Research Institute of Texas Scholar in Cancer Research, Austin, TX, United States
| | - Chike O. Abana
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Molly B. El Alam
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Katarina C. Tomasic
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Tatiana V. Karpinets
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Ramez Kouzy
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Jae L. Phan
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Jennifer Wargo
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Emma B. Holliday
- Gastrointestinal Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Prajnan Das
- Gastrointestinal Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Melissa P. Mezzari
- The Alkek Center for Metagenomics and Microbiome Research, Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, United States
| | - Nadim J. Ajami
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Erica J. Lynn
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Bruce D. Minsky
- Gastrointestinal Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Van K. Morris
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Andrea Milbourne
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Craig A. Messick
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Ann H. Klopp
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - P. Andrew Futreal
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Cullen M. Taniguchi
- Gastrointestinal Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Kathleen M. Schmeler
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Lauren E. Colbert
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
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Zhang Y, Xiang X, Zhou S, Dindar DA, Wood S, Zhang Z, Shan B, Zhao L. Relationship between pathogenic microorganisms and the occurrence of esophageal carcinoma based on pathological type: a narrative review. Expert Rev Gastroenterol Hepatol 2023; 17:353-361. [PMID: 36896656 DOI: 10.1080/17474124.2023.2189099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
INTRODUCTION Esophageal cancer (EC) is one of the most common malignant tumors of the upper gastrointestinal tract. The etiology of EC is complicated and increasing evidence has shown that microbial infection is closely related to the occurrence of various malignant tumors. Though many studies have been focused on this subject in recent years, the exact relationship between microbial infection and the occurrence of EC remains unclear. AREAS COVERED In this review, we searched all eligible literature reports, summarized the most recent studies in this research field, and analyzed the pathogenic microorganisms associated with EC, providing the latest evidence and references for the prevention of pathogenic microorganism-related EC. EXPERT OPINION In recent years, increasing evidence has shown that pathogenic microbial infections are closely associated with the development of EC. Therefore, it is necessary to describe in detail the relationship between microbial infection and EC and clarify its possible pathogenic mechanism, which will shed a light on clinical prevention and treatment of cancer caused by pathogenic microbial infection.
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Affiliation(s)
- Ying Zhang
- Research Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xiaohan Xiang
- Research Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Shaolan Zhou
- Department of Rheumatology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia, China
| | - Duygu Altinok Dindar
- Cancer Early Detection Advanced Research Center, Oregon Health & Science University, Portland, OR, USA
| | - Stephanie Wood
- Division of Gastrointestinal and General Surgery, School of Medicine, Oregon Health & Science University, Portland, OR, USA
| | - Zhenzhen Zhang
- Division of Oncological Sciences, Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
| | - Baoen Shan
- Research Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Lianmei Zhao
- Research Center, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.,Division of Oncological Sciences, Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
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Singh S, Yadav PK, Singh AK. In-silico structural characterization and phylogenetic analysis of Nucleoside diphosphate kinase: A novel antiapoptotic protein of Porphyromonas gingivalis. J Cell Biochem 2023; 124:545-556. [PMID: 36815439 DOI: 10.1002/jcb.30389] [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: 12/15/2022] [Revised: 02/02/2023] [Accepted: 02/09/2023] [Indexed: 02/24/2023]
Abstract
The Nucleoside diphosphate kinase (NDK) protein of Porphyromonas gingivalis (P. gingivalis) plays a crucial role in immune evasion and inhibition of apoptosis in host cells and has the potential to cause cancer. However, its structure has not yet been characterized. We used an in-silico approach to determine the 3D structure of the P. gingivalis NDK. Furthermore, structural characterization and functional annotation were performed using computational approaches. The 3D structure of NDK was predicted through homology modeling. The structural domains predicted for the model protein belong to the NDK family. Structural alignment of prokaryotic and eukaryotic NDKs with the model protein revealed the conservation of the domain region. Structure-based phylogenetic analysis depicted a significant evolutionary relationship between the model protein and the prokaryotic NDK. Functional annotation of the model confirmed structural homology, exhibiting similar enzymatic functions as NDK, including ATP binding and nucleoside diphosphate kinase activity. Furthermore, molecular dynamic (MD) simulation technique stabilized the model structure and provides a thermo-stable protein structure that can be used as a therapeutic target for further studies.
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Affiliation(s)
- Suchitra Singh
- Department of Bioinformatics, Central University of South Bihar, Gaya, India
| | - Piyush Kumar Yadav
- Department of Bioinformatics, Central University of South Bihar, Gaya, India
| | - Ajay Kumar Singh
- Department of Bioinformatics, Central University of South Bihar, Gaya, India
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Guo ZC, Jing SL, Jumatai S, Gong ZC. Porphyromonas gingivalis promotes the progression of oral squamous cell carcinoma by activating the neutrophil chemotaxis in the tumour microenvironment. Cancer Immunol Immunother 2022; 72:1523-1539. [PMID: 36513851 DOI: 10.1007/s00262-022-03348-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 12/05/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND We aimed to determine the significance of Porphyromonas gingivalis (P. gingivalis) in promoting tumour progression in the tumour microenvironment (TME) of oral squamous cell carcinoma (OSCC). METHODS The Gene Expression Omnibus (GEO) was used to screen out the differentially expressed genes from the two datasets of GEO138206 and GSE87539. Immunohistochemistry and immunofluorescence analysis of samples, cell biological behaviour experiments, and tumour-bearing animal experiments were used to verify the results in vivo and in vitro. The mechanism was revealed at the molecular level, and rescue experiments were carried out by using inhibitors and lentiviruses. RESULTS CXCL2 was selected by bioinformatics analysis and was found to be related to a poor prognosis in OSCC patients. Samples with P. gingivalis infection in the TME of OSCC had the strongest cell invasion and proliferation and the largest tumour volume in tumour-bearing animal experiments and exhibited JAK1/STAT3 signalling pathway activation and epithelial-mesenchymal transition (EMT). The expression of P. gingivalis, CXCL2 and TANs were independent risk factors for poor prognosis in OSCC patients. A CXCL2/CXCR2 signalling axis inhibitor significantly decreased the invasion and proliferation ability of cells and the tumour volume in mice. When lentivirus was used to block the CXCL2/CXCR2 signalling axis, the activity of the JAK1/STAT3 signalling pathway was decreased, and the phenotype of EMT was reversed. CONCLUSION Porphyromonas gingivalis promotes OSCC progression by recruiting TANs via activation of the CXCL2/CXCR2 axis in the TME of OSCC.
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Affiliation(s)
- Zhi-Chen Guo
- Oncological Department of Oral and Maxillofacial Surgery, The Affiliated Stomatology Hospital of The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Institute of Stomatology, No.137, Li Yu Shan South Road, Urumqi, 830054, Xinjiang, People's Republic of China
| | - Si-Li Jing
- Department of Ophthalmology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Sakendeke Jumatai
- Oncological Department of Oral and Maxillofacial Surgery, The Affiliated Stomatology Hospital of The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Institute of Stomatology, No.137, Li Yu Shan South Road, Urumqi, 830054, Xinjiang, People's Republic of China
| | - Zhong-Cheng Gong
- Oncological Department of Oral and Maxillofacial Surgery, The Affiliated Stomatology Hospital of The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region Institute of Stomatology, No.137, Li Yu Shan South Road, Urumqi, 830054, Xinjiang, People's Republic of China.
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Villalobos V, Garrido M, Reyes A, Fernández C, Diaz C, Torres VA, González PA, Cáceres M. Aging envisage imbalance of the periodontium: A keystone in oral disease and systemic health. Front Immunol 2022; 13:1044334. [PMID: 36341447 PMCID: PMC9630574 DOI: 10.3389/fimmu.2022.1044334] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/05/2022] [Indexed: 10/21/2023] Open
Abstract
Aging is a gradual and progressive deterioration of integrity across multiple organ systems that negatively affects gingival wound healing. The cellular responses associated with wound healing, such as collagen synthesis, cell migration, proliferation, and collagen contraction, have been shown to be lower in gingival fibroblasts (the most abundant cells from the connective gingival tissue) in aged donors than young donors. Cellular senescence is one of the hallmarks of aging, which is characterized by the acquisition of a senescence-associated secretory phenotype that is characterized by the release of pro-inflammatory cytokines, chemokines, growth factors, and proteases which have been implicated in the recruitment of immune cells such as neutrophils, T cells and monocytes. Moreover, during aging, macrophages show altered acquisition of functional phenotypes in response to the tissue microenvironment. Thus, inflammatory and resolution macrophage-mediated processes are impaired, impacting the progression of periodontal disease. Interestingly, salivary antimicrobial peptides, such as histatins, which are involved in various functions, such as antifungal, bactericidal, enamel-protecting, angiogenesis, and re-epithelization, have been shown to fluctuate with aging. Several studies have associated the presence of Porphyromonas gingivalis, a key pathogen related to periodontitis and apical periodontitis, with the progression of Alzheimer's disease, as well as gut, esophageal, and gastric cancers. Moreover, herpes simplex virus types 1 and 2 have been associated with the severity of periodontal disease, cardiovascular complications, and nervous system-related pathologies. This review encompasses the effects of aging on periodontal tissues, how P. gingivalis and HSV infections could favor periodontitis and their relationship with other pathologies.
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Affiliation(s)
- Verónica Villalobos
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Mauricio Garrido
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Antonia Reyes
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Christian Fernández
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Catalina Diaz
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Vicente A. Torres
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Institute for Research in Dental Sciences, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Universidad de Chile, Santiago, Chile
| | - Pablo A. González
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mónica Cáceres
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Universidad de Chile, Santiago, Chile
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11
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Subgingival Periopathogens Assessment and Clinical Periodontal Evaluation of Gastric Cancer Patients—A Cross Sectional Pilot Study. Pathogens 2022; 11:pathogens11030360. [PMID: 35335684 PMCID: PMC8949055 DOI: 10.3390/pathogens11030360] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/07/2022] [Accepted: 03/12/2022] [Indexed: 12/24/2022] Open
Abstract
Oral microbiota have shown a higher bacterial diversity in patients with cancers of the digestive tract, with higher levels of periopathogens. Recent studies have shown that Fusobacterium links to gastro-intestinal neoplastic tissue and accelerates its progression, as well as worsening patient outcome. The present pilot study was carried out between February and December 2020 to evaluate the possible association between the abundance of some periopathogens (Fusobacterium nucleatum, Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Treponema denticola and Tannerella forsythia) in subgingival plaque and periodontal status with characteristics of gastric cancer. The study was performed on a sample of 24 patients with gastric cancer from the 1st Department of Surgery and Department of Gastroenterology within the Clinical County Hospital of Emergency of Craiova, Romania. The patients’ oral cavity was examined, gingival crevicular samples were collected, and signs of periodontal disease were recorded. On the histopathological exam, the differentiation grade and size of the tumour were registered. Our results showed that, from the periopathogens studied, the most abundant bacteria were F. nucleatum followed by T. forsythia in all groups. In our present study, the strong correlation between tumour dimension and all periodontal parameters but also between tumour dimension and F. nucleatum could suggest a positive association between periodontal disease, tumoral growth and periopathogens implication in this process.
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12
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Antibacterial Activity of Some Medicinal Plants in Al Baha Region, Saudi Arabia, Against Carcinogenic Bacteria Related to Gastrointestinal Cancers. J Gastrointest Cancer 2022; 54:51-55. [PMID: 34988907 DOI: 10.1007/s12029-021-00793-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Gastrointestinal cancers are the most dangerous cancers all over the world. The gut microbiota dysbiosis increases the risk of GI cancers and induces the host's susceptibility to carcinogenic bacteria. Antibiotic resistance is rising in these bacteria. Thus, discovering new safe and effective antibacterial agents is a worldwide concern. This study evaluates the antibacterial activity of six wild medicinal plants from the Al Bahah region in Saudi Arabia. METHODS Arial parts of Cissus quadrangularis, Aloe castellorum, Psiadia punctulata, Aloe pseudorubroviolacea, Barbeya oleoides, Teucrium yemense were collected and dried for extraction with ethanol. The minimum inhibitory concentrations (MIC) of these ethanolic extracts against carcinogenic bacteria Bacteroides fragilis, Clostridium ssp., Cutibacterium acnes, Escherichia coli, Fusobacterium nucleatum, Helicobacter pylori, Mycoplasma spp., Neisseria gonorrhoeae, Porphyromonas gingivalis, Salmonella enterica, and Treponema pallidum were evaluated to determine its antibacterial activity. RESULTS All extracts showed antibacterial activity with MIC lower than 1 mg/ml. Psiadia punctulata showed higher antibacterial activity, while the Aloe species showed the lowest antibacterial activity. CONCLUSION The studied plants' extracts showed high effectiveness as antibacterial activity against the carcinogenic bacteria related to gastrointestinal cancers due to their high content of pharmaceutical components. These plants could be explored further for the development of new antibacterial products against these carcinogenic bacteria.
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Duijster JW, Franz E, Neefjes J, Mughini-Gras L. Bacterial and Parasitic Pathogens as Risk Factors for Cancers in the Gastrointestinal Tract: A Review of Current Epidemiological Knowledge. Front Microbiol 2021; 12:790256. [PMID: 34956157 PMCID: PMC8692736 DOI: 10.3389/fmicb.2021.790256] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/11/2021] [Indexed: 12/12/2022] Open
Abstract
The oncogenic potential of viral infections is well established and documented for many years already. However, the contribution of (commensal) bacteria and parasites to the development and progression of cancers has only recently gained momentum, resulting in a rapid growth of publications on the topic. Indeed, various bacteria and parasites have been suggested to play a role in the development of gastrointestinal cancer in particular. Therefore, an overview of the current epidemiological knowledge on the association between infections with bacteria and parasites and cancers of the gastrointestinal tract is needed. In this review, we summarized the methodological characteristics and main results of epidemiological studies investigating the association of 10 different bacteria (Bacteroides fragilis, Campylobacter spp., Clostridium spp., Enterococcus faecalis, Escherichia coli, Fusobacterium nucleatum, Porphyromonas gingivalis, non-typhoidal Salmonella, Salmonella Typhi, and Streptococcus spp.) and three parasites (Cryptosporidium spp., Schistosoma spp., and Strongyloides stercoralis) with gastrointestinal cancer. While the large body of studies based on microbiome sequencing provides valuable insights into the relative abundance of different bacterial taxa in cancer patients as compared to individuals with pre-malignant conditions or healthy controls, more research is needed to fulfill Koch's postulates, possibly making use of follow-up data, to assess the complex role of bacterial and parasitic infections in cancer epidemiology. Studies incorporating follow-up time between detection of the bacterium or parasite and cancer diagnosis remain valuable as these allow for estimation of cause-effect relationships.
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Affiliation(s)
- Janneke W. Duijster
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, Netherlands
- Department of Cell and Chemical Biology, Oncode Institute, Leiden University Medical Center, Leiden, Netherlands
| | - Eelco Franz
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, Netherlands
| | - Jacques Neefjes
- Department of Cell and Chemical Biology, Oncode Institute, Leiden University Medical Center, Leiden, Netherlands
| | - Lapo Mughini-Gras
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, Netherlands
- Institute for Risk Assessment Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
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14
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Singh S, Singh AK. Porphyromonas gingivalis in oral squamous cell carcinoma: A review. Microbes Infect 2021; 24:104925. [PMID: 34883247 DOI: 10.1016/j.micinf.2021.104925] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 11/15/2021] [Accepted: 11/30/2021] [Indexed: 12/26/2022]
Abstract
Oral cancer contributes significantly to the global cancer burden. Oral bacteria play an important role in the spread of oral cancer, according to mounting evidence. The most proven instance is the carcinogenic implications of Porphyromonas gingivalis, a key pathogen in chronic periodontitis. It is imperative to understand the pathogenesis of P. gingivalis in OSCC. This review aims to gather and assess scientific shreds of evidence on the involvement of Porphyromonas gingivalis in the molecular mechanism of oral squamous cell carcinoma.
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Affiliation(s)
- Suchitra Singh
- Department of Bioinformatics, Central University of South Bihar, Gaya, India
| | - Ajay Kumar Singh
- Department of Bioinformatics, Central University of South Bihar, Gaya, India.
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Yuan S, Fang C, Leng WD, Wu L, Li BH, Wang XH, Hu H, Zeng XT. Oral microbiota in the oral-genitourinary axis: identifying periodontitis as a potential risk of genitourinary cancers. Mil Med Res 2021; 8:54. [PMID: 34588004 PMCID: PMC8480014 DOI: 10.1186/s40779-021-00344-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 09/03/2021] [Indexed: 12/12/2022] Open
Abstract
Periodontitis has been proposed as a novel risk factor of genitourinary cancers: although periodontitis and genitourinary cancers are two totally distinct types of disorders, epidemiological and clinical studies, have established associations between them. Dysbiosis of oral microbiota has already been established as a major factor contributing to periodontitis. Recent emerging epidemiological evidence and the detection of oral microbiota in genitourinary organs indicate the presence of an oral-genitourinary axis and oral microbiota may be involved in the pathogenesis of genitourinary cancers. Therefore, oral microbiota provides the bridge between periodontitis and genitourinary cancers. We have carried out this narrative review which summarizes epidemiological studies exploring the association between periodontitis and genitourinary cancers. We have also highlighted the current evidence demonstrating the capacity of oral microbiota to regulate almost all hallmarks of cancer, and proposed the potential mechanisms of oral microbiota in the development of genitourinary cancers.
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Affiliation(s)
- Shuai Yuan
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 Hubei China
| | - Cheng Fang
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 Hubei China
| | - Wei-Dong Leng
- Department of Stomatology, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000 Hubei China
| | - Lan Wu
- Department of Stomatology, Zhongnan Hospital of Wuhan University, Wuhan, 430071 Hubei China
| | - Bing-Hui Li
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 Hubei China
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, 430071 Hubei China
| | - Xing-Huan Wang
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 Hubei China
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, 430071 Hubei China
| | - Hailiang Hu
- Department of Pathology, Duke University School of Medicine, Durham, NC 27710 USA
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518055 China
| | - Xian-Tao Zeng
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 Hubei China
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, 430071 Hubei China
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16
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Lu H, Luan X, Wu X, Meng L, Zhang X, Wang Y, Han Y, Wang X, Sun L, Bi L. Antimicrobial photodynamic therapeutic effects of cationic amino acid-porphyrin conjugate 4i on Porphyromonas gingivalis in vitro. Photodiagnosis Photodyn Ther 2021; 36:102539. [PMID: 34555533 DOI: 10.1016/j.pdpdt.2021.102539] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 09/14/2021] [Accepted: 09/14/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Porphyromonas gingivalis (P. gingivalis) is considered to be among the principal pathogens in periodontal disease. The present study aimed to investigate the effect of antimicrobial photodynamic therapy (aPDT) mediated by cationic amino acid-porphyrin conjugate 4i on P. gingivalis METHODS: The uptake of 4i by P. gingivalis over different times of incubation was evaluated by optical density using a microplate reader. Laser radiation at λ=650nm-660nm with I =50 mW/cm2 at doses of 0, 3.0, 6.0, 9.0, and 12 J/cm2 was used for aPDT. A colony-counting method and confocal laser scanning microscopy (CLSM) were used to observe the neutralization of P. gingivalis. The fluorescent molecular probe 3'(p-hydroxyphenyl)-fluorescein and the reagent Singlet Oxygen Sensor Green were used to measure the quantities of •OH and 1O2 produced by 4i after irradiation with different light energies. RESULTS The 4i conjugate was absorbed gradually by P. gingivalis, reaching a maximum at 30 min. A clear cytotoxic effect on P. gingivalis was observed with aPDT using 62.5 µM 4i, with colony counts dropping by a factor of 3.35 log10, indicating a sterilization rate of 99.95%. Light irradiation resulted principally in the production of • OHby 4i. A live/dead viability assay demonstrated substantial red fluorescence in P. gingivalis treated with aPDT. CONCLUSIONS The results suggest that 4i-aPDT caused substantial cytotoxicity in P. gingivalis.
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Affiliation(s)
- Haiyan Lu
- Department of Stomatology, The Fourth Hospital of Harbin Medical University, 37 Yiyuan Street, Nangang District, Harbin 150001, China
| | - Xiaomin Luan
- Department of Stomatology, The Fourth Hospital of Harbin Medical University, 37 Yiyuan Street, Nangang District, Harbin 150001, China
| | - Xiaoying Wu
- Department of Stomatology, The Fourth Hospital of Harbin Medical University, 37 Yiyuan Street, Nangang District, Harbin 150001, China
| | - Lei Meng
- Department of Stomatology, The Fourth Hospital of Harbin Medical University, 37 Yiyuan Street, Nangang District, Harbin 150001, China
| | - Xingyu Zhang
- Department of Stomatology, The Fourth Hospital of Harbin Medical University, 37 Yiyuan Street, Nangang District, Harbin 150001, China
| | - Yijing Wang
- Department of Stomatology, The Fourth Hospital of Harbin Medical University, 37 Yiyuan Street, Nangang District, Harbin 150001, China
| | - Yang Han
- Department of Stomatology, The Fourth Hospital of Harbin Medical University, 37 Yiyuan Street, Nangang District, Harbin 150001, China
| | - Xiaochun Wang
- Department of Stomatology, The Fourth Hospital of Harbin Medical University, 37 Yiyuan Street, Nangang District, Harbin 150001, China
| | - Lingling Sun
- Department of Stomatology, The Fourth Hospital of Harbin Medical University, 37 Yiyuan Street, Nangang District, Harbin 150001, China
| | - Liangjia Bi
- Department of Stomatology, The Fourth Hospital of Harbin Medical University, 37 Yiyuan Street, Nangang District, Harbin 150001, China.
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Shridhar K, Aggarwal A, Rawal I, Gupta R, Masih S, Mehrotra R, Gillespie TW, Dhillon PK, Michaud DS, Prabhakaran D, Goodman M. Feasibility of investigating the association between bacterial pathogens and oral leukoplakia in low and middle income countries: A population-based pilot study in India. PLoS One 2021; 16:e0251017. [PMID: 33914825 PMCID: PMC8084244 DOI: 10.1371/journal.pone.0251017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 04/17/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Certain oral bacterial pathogens may play a role in oral carcinogenesis. We assessed the feasibility of conducting a population-based study in India to examine the distributions and levels of Porphyromonas gingivalis, Fusobacterium nucleatum and Prevotella intermedia in relation to oral leukoplakia (a potentially malignant disorder) and other participant characteristics. METHODS This exploratory case-control study was nested within a large urban Indian cohort and the data included 22 men and women with oral leukoplakia (cases) and 69 leukoplakia-free controls. Each participant provided a salivary rinse sample, and a subset of 34 participants (9 cases; 25 controls) also provided a gingival swab sample from keratinized gingival surface for quantitative polymerase chain reaction (qPCR). RESULTS Neither the distribution nor the levels of pathogens were associated with oral leukoplakia; however, individual pathogen levels were more strongly correlated with each other in cases compared to controls. Among controls, the median level of total pathogens was the highest (7.55×104 copies/ng DNA) among persons of low socioeconomic status. Salivary rinse provided better DNA concentration than gingival swab for qPCR analysis (mean concentration: 1.8 ng/μl vs. 0.2 ng/μl). CONCLUSIONS This study confirms the feasibility of population studies evaluating oral microbiome in low-resource settings and identifies promising leads for future research.
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Affiliation(s)
- Krithiga Shridhar
- Centre for Chronic Conditions and Injuries, Public Health Foundation of India, Gurugram, India
- Centre for Chronic Disease Control, New Delhi, India
| | - Aastha Aggarwal
- Centre for Chronic Conditions and Injuries, Public Health Foundation of India, Gurugram, India
- Centre for Chronic Disease Control, New Delhi, India
| | - Ishita Rawal
- Centre for Chronic Disease Control, New Delhi, India
| | - Ruby Gupta
- Centre for Chronic Conditions and Injuries, Public Health Foundation of India, Gurugram, India
- Centre for Chronic Disease Control, New Delhi, India
| | - Shet Masih
- Molecular Diagnostics Research Laboratory, Chandigarh, India
| | - Ravi Mehrotra
- India Cancer Research Consortium, Indian Council of Medical Research, New Delhi, India
- Emory University Rollins School of Public Health, Atlanta, Georgia, United States of America
| | - Theresa W. Gillespie
- Division of Surgical Oncology, Department of Surgery, Winship Cancer Institute, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Preet K. Dhillon
- Centre for Chronic Conditions and Injuries, Public Health Foundation of India, Gurugram, India
- Centre for Chronic Disease Control, New Delhi, India
- Genentech Roche, California, United States of America
| | - Dominique S. Michaud
- Department of Public Health & Community Medicine, Tufts University School of Medicine, Boston, MA, United States of America
| | - Dorairaj Prabhakaran
- Centre for Chronic Conditions and Injuries, Public Health Foundation of India, Gurugram, India
- Centre for Chronic Disease Control, New Delhi, India
- Emory University Rollins School of Public Health, Atlanta, Georgia, United States of America
- London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Michael Goodman
- Emory University Rollins School of Public Health, Atlanta, Georgia, United States of America
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Radaic A, Kapila YL. The oralome and its dysbiosis: New insights into oral microbiome-host interactions. Comput Struct Biotechnol J 2021; 19:1335-1360. [PMID: 33777334 PMCID: PMC7960681 DOI: 10.1016/j.csbj.2021.02.010] [Citation(s) in RCA: 162] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 02/13/2021] [Accepted: 02/16/2021] [Indexed: 02/06/2023] Open
Abstract
The oralome is the summary of the dynamic interactions orchestrated between the ecological community of oral microorganisms (comprised of up to approximately 1000 species of bacteria, fungi, viruses, archaea and protozoa - the oral microbiome) that live in the oral cavity and the host. These microorganisms form a complex ecosystem that thrive in the dynamic oral environment in a symbiotic relationship with the human host. However, the microbial composition is significantly affected by interspecies and host-microbial interactions, which in turn, can impact the health and disease status of the host. In this review, we discuss the composition of the oralome and inter-species and host-microbial interactions that take place in the oral cavity and examine how these interactions change from healthy (eubiotic) to disease (dysbiotic) states. We further discuss the dysbiotic signatures associated with periodontitis and caries and their sequalae, (e.g., tooth/bone loss and pulpitis), and the systemic diseases associated with these oral diseases, such as infective endocarditis, atherosclerosis, diabetes, Alzheimer's disease and head and neck/oral cancer. We then discuss current computational techniques to assess dysbiotic oral microbiome changes. Lastly, we discuss current and novel techniques for modulation of the dysbiotic oral microbiome that may help in disease prevention and treatment, including standard hygiene methods, prebiotics, probiotics, use of nano-sized drug delivery systems (nano-DDS), extracellular polymeric matrix (EPM) disruption, and host response modulators.
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Affiliation(s)
- Allan Radaic
- Kapila Laboratory, Orofacial Sciences Department, School of Dentistry, University of California, San Francisco (UCSF), San Francisco, CA, USA
| | - Yvonne L. Kapila
- Kapila Laboratory, Orofacial Sciences Department, School of Dentistry, University of California, San Francisco (UCSF), San Francisco, CA, USA
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Zhang Z, Liu D, Liu S, Zhang S, Pan Y. The Role of Porphyromonas gingivalis Outer Membrane Vesicles in Periodontal Disease and Related Systemic Diseases. Front Cell Infect Microbiol 2021; 10:585917. [PMID: 33585266 PMCID: PMC7877337 DOI: 10.3389/fcimb.2020.585917] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 12/14/2020] [Indexed: 12/19/2022] Open
Abstract
Periodontal disease is a chronic infectious disease associated with a variety of bacteria, which can cause damage to the periodontal support structure and affect a variety of systemic system diseases such as cancer, cardiovascular disease, diabetes, rheumatoid arthritis, non-alcoholic fatty liver, and Alzheimer's disease. Porphyromonas gingivalis (P. gingivalis) is the most important pathogenic bacteria for periodontal disease. It can produce outer membrane vesicles (OMVs) and release them into the environment, playing an important role in its pathogenesis. This article focuses on P. gingivalis OMVs, reviews its production and regulation, virulence components, mode of action and related diseases, with a view to providing new ideas for the prevention and treatment of diseases related to P. gingivalis infections.
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Affiliation(s)
- Zhiying Zhang
- Department of Periodontics, Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Dongjuan Liu
- Department of Emergency and Oral Medicine, Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Sai Liu
- Department of Dental Materials, Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Shuwei Zhang
- Department of Periodontics, Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, China
| | - Yaping Pan
- Department of Periodontics, Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang, China
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Al-Maweri SA, Ibraheem WI, Al-Ak'hali MS, Shamala A, Halboub E, Alhajj MN. Association of periodontitis and tooth loss with liver cancer: A systematic review. Crit Rev Oncol Hematol 2021; 159:103221. [PMID: 33482347 DOI: 10.1016/j.critrevonc.2021.103221] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 01/06/2021] [Accepted: 01/11/2021] [Indexed: 02/08/2023] Open
Abstract
A number of epidemiological studies have suggested a positive association between periodontal diseases and oro-digestive cancers, including liver cancer. The purpose of the present systematic review was to analyze the current evidence regarding the potential association between periodontitis and/or tooth loss and the risk of liver cancer. A comprehensive search of PubMed, Scopus and Web of Science databases was conducted in August 2019. The inclusion criteria comprised all observational studies that assessed the relationship between periodontitis or tooth loss and liver cancer. Case reports, animal studies, experimental studies, and reviews were excluded. Due to great heterogeneity among the included studies, no meta-analysis was conducted. Six studies (five prospective cohorts and one case-control) comprising 619,834 subjects (including 916 liver cancer cases) were included. The studies were conducted in the United States, Europe, and Asia. Three large-scale cohort studies reported a positive association between periodontitis or tooth loss and the risk of liver cancer. One case-control study found some association between liver cancer and loss of 12-23 teeth, but such association was not replicated in patients with greater number of tooth loss. Contrarily, two studies failed to report any association between periodontitis and/or tooth loss and the risk of liver cancer. The available evidence suggests a possible link between tooth loss/periodontitis and the risk of liver cancer. However, the evidence is not conclusive enough, a fact that drives to conduct more, well-designed, prospective cohort studies to further explore the potential association between periodontitis and the risk of liver cancer.
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Affiliation(s)
- Sadeq Ali Al-Maweri
- Department of Oral Medicine and Diagnostic Sciences, AlFarabi College of Dentistry and Nursing, Riyadh, Saudi Arabia; Department of Oral Medicine, Oral Pathology and Oral Radiology, Faculty of Dentistry, Sana'a University, Yemen.
| | - Wael Ibraheem Ibraheem
- Department of Preventive Dental Sciences, College of Dentistry, Jazan University, Saudi Arabia.
| | - Mohammad Sultan Al-Ak'hali
- Department of Preventive Dental Sciences, College of Dentistry, Jazan University, Saudi Arabia; Department of Periodontology, Faculty of Dentistry, Sana'a University, Yemen.
| | - Anas Shamala
- Department of Biological and Preventive Sciences, College of Dentistry, University of Sciences and Technology, Sana'a, Yemen.
| | - Esam Halboub
- Department of Oral Medicine, Oral Pathology and Oral Radiology, Faculty of Dentistry, Sana'a University, Yemen; Department of Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jazan University, Saudi Arabia.
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21
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Matsuda S, Goi T, Yoshida Y, Yoshimura H. Periodontal disease in preoperative patients with digestive cancer: a retrospective, single-institution experience in Fukui, Japan. BMC Oral Health 2021; 21:3. [PMID: 33407343 PMCID: PMC7789498 DOI: 10.1186/s12903-020-01378-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 12/22/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The careful preoperative oral assessment may be useful for safe surgery under general anesthesia. The purpose of this study was to investigate the presence of periodontitis in patients with malignant digestive disease before surgery under general anesthesia. METHODS Patients with digestive malignant disease who underwent periodontal examination and orthopantomograph examination for preoperative oral health assessment were participated. The authors investigated the patients' general characteristics and clinical oral information, including the presence of periodontitis. RESULTS One hundred twenty patients participated in this study. The mean and standard deviation of the number of teeth was 20.8 ± 8.2, and there was a statistically significant correlation between age and number of teeth. The periodontal pocket depth was 3.0 ± 1.0, and mobile teeth were observed in 62 patients. There was a statistically significant correlation between number of teeth and number of mobile teeth. However, there was no significant difference between the age of patients without mobile teeth and the age of patients with mobile teeth. CONCLUSIONS This retrospective study performed in single-institution clarified the presence of periodontitis in patients with malignant digestive disease before surgery. Regardless of age, it is important to assess the oral health, including periodontitis, for safe surgery under general anesthesia.
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Affiliation(s)
- Shinpei Matsuda
- Department of Dentistry and Oral Surgery, Unit of Sensory and Locomotor Medicine, Division of Medicine, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui, 910-1193, Japan.
| | - Takanori Goi
- First Department of Surgery, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Yoshio Yoshida
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan.,Center for Preoperative Assessment, University of Fukui Hospital, Fukui, Japan
| | - Hitoshi Yoshimura
- Department of Dentistry and Oral Surgery, Unit of Sensory and Locomotor Medicine, Division of Medicine, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui, 910-1193, Japan
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22
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Liu L, Qin K, Yin S, Zheng X, Li H, Yan H, Song P, Ji X, Zhang Q, Wei Y, Zhao L. Bifunctional Carbon Dots Derived From an Anaerobic Bacterium of Porphyromonas gingivalis for Selective Detection of Fe 3+ and Bioimaging. Photochem Photobiol 2020; 97:574-581. [PMID: 33289104 DOI: 10.1111/php.13360] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/29/2020] [Accepted: 11/29/2020] [Indexed: 12/30/2022]
Abstract
In this study, for the first time, Porphyromonas gingivalis, an anaerobic bacterium, was selected to synthesize carbon dots. The achieved P. gingivalis-carbon dots (Pg-CDs) exhibited strong fluorescence and high stability with capability for dual function as Fe3+ sensor and intracellular imaging agent. The detection limit for Fe3+ was as low as 1.85 µm. On the other hand, the prepared Pg-CDs were an excellent candidate for biosensor with high biocompatibility.
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Affiliation(s)
- Lijuan Liu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Kunhao Qin
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Shuang Yin
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Xiaodan Zheng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Hongmei Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Hui Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Pengfei Song
- R&D Center, China Tobacco Yunnan Industrial Co., Ltd., Kunming, China
| | - Xiuling Ji
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Qi Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Yunlin Wei
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Limin Zhao
- College of Materials Science and Engineering, Liaocheng University, Liaocheng, China
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23
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The Role of the Microbiome in Oral Squamous Cell Carcinoma with Insight into the Microbiome-Treatment Axis. Int J Mol Sci 2020; 21:ijms21218061. [PMID: 33137960 PMCID: PMC7662318 DOI: 10.3390/ijms21218061] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/06/2020] [Accepted: 10/12/2020] [Indexed: 12/24/2022] Open
Abstract
Oral squamous cell carcinoma (OSCC) is one of the leading presentations of head and neck cancer (HNC). The first part of this review will describe the highlights of the oral microbiome in health and normal development while demonstrating how both the oral and gut microbiome can map OSCC development, progression, treatment and the potential side effects associated with its management. We then scope the dynamics of the various microorganisms of the oral cavity, including bacteria, mycoplasma, fungi, archaea and viruses, and describe the characteristic roles they may play in OSCC development. We also highlight how the human immunodeficiency viruses (HIV) may impinge on the host microbiome and increase the burden of oral premalignant lesions and OSCC in patients with HIV. Finally, we summarise current insights into the microbiome–treatment axis pertaining to OSCC, and show how the microbiome is affected by radiotherapy, chemotherapy, immunotherapy and also how these therapies are affected by the state of the microbiome, potentially determining the success or failure of some of these treatments.
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24
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Focal Infection and Periodontitis: A Narrative Report and New Possible Approaches. Int J Microbiol 2020; 2020:8875612. [PMID: 33488729 PMCID: PMC7803120 DOI: 10.1155/2020/8875612] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 09/29/2020] [Accepted: 10/17/2020] [Indexed: 12/13/2022] Open
Abstract
The "focal infection theory" is a historical concept based on the assumption that some infections may cause chronic and acute diseases in different districts of the body. Its great popularity spanned from 1930 to 1950 when, with the aim to remove all the foci of infection, drastic surgical interventions were performed. Periodontitis, a common oral pathology mainly of bacterial origin, is the most evident example of this phenomenon today: in fact, bacteria are able to migrate, develop and cause health problems such as cardiovascular and respiratory diseases, diabetes, and osteoporosis. The aim of this narrative report is to verify the hypothesis of the association between oral infections and systemic diseases by different ways of approach and, at the same time, to propose new kinds of treatment today made possible by technological progress. The analysis of the literature demonstrated a strong relationship between these conditions, which might be explained on the basis of the recent studies on microbiota movement inside the body. Prevention of the oral infections, as well as of the possible systemic implications, may be successfully performed with the help of new technologies, such as probiotics and laser.
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25
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Gnanasekaran J, Binder Gallimidi A, Saba E, Pandi K, Eli Berchoer L, Hermano E, Angabo S, Makkawi H, Khashan A, Daoud A, Elkin M, Nussbaum G. Intracellular Porphyromonas gingivalis Promotes the Tumorigenic Behavior of Pancreatic Carcinoma Cells. Cancers (Basel) 2020; 12:cancers12082331. [PMID: 32824786 PMCID: PMC7465784 DOI: 10.3390/cancers12082331] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/10/2020] [Accepted: 08/14/2020] [Indexed: 12/20/2022] Open
Abstract
Porphyromonas gingivalis is a member of the dysbiotic oral microbiome associated with oral inflammation and periodontal disease. Intriguingly, epidemiological studies link P. gingivalis to an increased risk of pancreatic cancer. Given that oral bacteria are detected in human pancreatic cancer, and both mouse and human pancreata harbor microbiota, we explored the involvement of P. gingivalis in pancreatic tumorigenesis using cell lines and a xenograft model. Live P. gingivalis induced proliferation of pancreatic cancer cells; however, surprisingly, this effect was independent of Toll-like receptor 2, the innate immune receptor that is engaged in response to P. gingivalis on other cancer and immune cells, and is required for P. gingivalis to induce alveolar bone resorption. Instead, we found that P. gingivalis survives inside pancreatic cancer cells, a trait that can be enhanced in vitro and is increased by hypoxia, a central characteristic of pancreatic cancer. Increased tumor cell proliferation was related to the degree of intracellular persistence, and infection of tumor cells with P. gingivalis led to enhanced growth in vivo. To the best of our knowledge, this study is the first to demonstrate the direct effect of exposure to P. gingivalis on the tumorigenic behavior of pancreatic cancer cell lines. Our findings shed light on potential mechanisms underlying the pancreatic cancer–periodontitis link.
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Affiliation(s)
- JebaMercy Gnanasekaran
- The Institute of Dental Sciences, Hebrew University, Hadassah Faculty of Dental Medicine, Jerusalem 9112102, Israel; (J.G.); (A.B.G.); (E.S.); (K.P.); (L.E.B.); (S.A.); (H.M.); (A.K.); (A.D.)
| | - Adi Binder Gallimidi
- The Institute of Dental Sciences, Hebrew University, Hadassah Faculty of Dental Medicine, Jerusalem 9112102, Israel; (J.G.); (A.B.G.); (E.S.); (K.P.); (L.E.B.); (S.A.); (H.M.); (A.K.); (A.D.)
- Sharett Oncology Institute, Hadassah-Hebrew University Medical Center, Jerusalem 9112102, Israel;
| | - Elias Saba
- The Institute of Dental Sciences, Hebrew University, Hadassah Faculty of Dental Medicine, Jerusalem 9112102, Israel; (J.G.); (A.B.G.); (E.S.); (K.P.); (L.E.B.); (S.A.); (H.M.); (A.K.); (A.D.)
| | - Karthikeyan Pandi
- The Institute of Dental Sciences, Hebrew University, Hadassah Faculty of Dental Medicine, Jerusalem 9112102, Israel; (J.G.); (A.B.G.); (E.S.); (K.P.); (L.E.B.); (S.A.); (H.M.); (A.K.); (A.D.)
| | - Luba Eli Berchoer
- The Institute of Dental Sciences, Hebrew University, Hadassah Faculty of Dental Medicine, Jerusalem 9112102, Israel; (J.G.); (A.B.G.); (E.S.); (K.P.); (L.E.B.); (S.A.); (H.M.); (A.K.); (A.D.)
| | - Esther Hermano
- Sharett Oncology Institute, Hadassah-Hebrew University Medical Center, Jerusalem 9112102, Israel;
| | - Sarah Angabo
- The Institute of Dental Sciences, Hebrew University, Hadassah Faculty of Dental Medicine, Jerusalem 9112102, Israel; (J.G.); (A.B.G.); (E.S.); (K.P.); (L.E.B.); (S.A.); (H.M.); (A.K.); (A.D.)
| | - Hasna′a Makkawi
- The Institute of Dental Sciences, Hebrew University, Hadassah Faculty of Dental Medicine, Jerusalem 9112102, Israel; (J.G.); (A.B.G.); (E.S.); (K.P.); (L.E.B.); (S.A.); (H.M.); (A.K.); (A.D.)
| | - Arin Khashan
- The Institute of Dental Sciences, Hebrew University, Hadassah Faculty of Dental Medicine, Jerusalem 9112102, Israel; (J.G.); (A.B.G.); (E.S.); (K.P.); (L.E.B.); (S.A.); (H.M.); (A.K.); (A.D.)
| | - Alaa Daoud
- The Institute of Dental Sciences, Hebrew University, Hadassah Faculty of Dental Medicine, Jerusalem 9112102, Israel; (J.G.); (A.B.G.); (E.S.); (K.P.); (L.E.B.); (S.A.); (H.M.); (A.K.); (A.D.)
| | - Michael Elkin
- Sharett Oncology Institute, Hadassah-Hebrew University Medical Center, Jerusalem 9112102, Israel;
- Correspondence: (M.E.); (G.N.); Tel.: +972-2-6776782 (M.E.); +972-2-6758581 (G.N.)
| | - Gabriel Nussbaum
- The Institute of Dental Sciences, Hebrew University, Hadassah Faculty of Dental Medicine, Jerusalem 9112102, Israel; (J.G.); (A.B.G.); (E.S.); (K.P.); (L.E.B.); (S.A.); (H.M.); (A.K.); (A.D.)
- Correspondence: (M.E.); (G.N.); Tel.: +972-2-6776782 (M.E.); +972-2-6758581 (G.N.)
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26
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An evaluation of direct PCR assays for the detection and quantification of Porphyromonas gingivalis. Epidemiol Infect 2020; 148:e107. [PMID: 32418555 PMCID: PMC7325331 DOI: 10.1017/s0950268820001053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Porphyromonas gingivalis has been linked to the development and progression of oesophageal squamous cell carcinoma (ESCC), and is considered to be a high-risk factor for ESCC. Currently, the commonly used methods for P. gingivalis detection are culture or DNA extraction-based, which are either time and labour intensive especially for high-throughput applications. We aimed to establish and evaluate a rapid and sensitive direct quantitative polymerase chain reaction (qPCR) protocol for the detection of P. gingivalis without DNA extraction which is suitable for large-scale epidemiological studies. Paired gingival swab samples from 192 subjects undergoing general medical examinations were analysed using two direct and one extraction-based qPCR assays for P. gingivalis. Tris-EDTA buffer-based direct qPCR (TE-direct qPCR), lysis-based direct qPCR (lysis-direct qPCR) and DNA extraction-based qPCR (kit-qPCR) were used, respectively, in 192, 132 and 60 of these samples for quantification of P. gingivalis. The sensitivity and specificity of TE-direct qPCR was 95.24% and 100% compared with lysis-direct qPCR, which was 100% and 97.30% when compared with kit-qPCR; TE-direct qPCR had an almost perfect agreement with lysis-direct qPCR (κ = 0.954) and kit-qPCR (κ = 0.965). Moreover, the assay time used for TE-direct qPCR was 1.5 h. In conclusion, the TE-direct qPCR assay is a simple and efficient method for the quantification of oral P. gingivalis and showed high sensitivity and specificity compared with routine qPCR.
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27
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Sollie S, Santaolalla A, Michaud DS, Sarker D, Karagiannis SN, Josephs DH, Hammar N, Walldius G, Garmo H, Holmberg L, Jungner I, Van Hemelrijck M. Serum Immunoglobulin G Is Associated With Decreased Risk of Pancreatic Cancer in the Swedish AMORIS Study. Front Oncol 2020; 10:263. [PMID: 32185133 PMCID: PMC7059192 DOI: 10.3389/fonc.2020.00263] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 02/14/2020] [Indexed: 12/15/2022] Open
Abstract
Background: Emerging evidence points to potential roles of the humoral immune responses in the development of pancreatic cancer. Epidemiological studies have suggested involvement of viral and bacterial infections in pancreatic carcinogenesis. Experimental studies have reported high expression levels of antigens in pancreatic cancer cells. Therefore, we aimed to investigate the role of different components of humoral immunity in the context of pancreatic cancer. We evaluated associations between pre-diagnostic serum markers of the overall humoral immune system [immunoglobulin A (IgA), immunoglobulin G (IgG) and immunoglobulin M (IgM)], and the risk of pancreatic cancer in the Swedish Apolipoprotein-related MORtality RISk (AMORIS) study. Methods: We selected all participants (≥20 years old) with baseline measurements of IgA, IgG or IgM (n = 41,900, 136,221, and 29,919, respectively). Participants were excluded if they had a history of chronic pancreatitis and individuals were free from pancreatic cancer at baseline. Multivariate Cox proportional hazards regression was used to estimate risk of pancreatic cancer for medical cut-offs of IgA, IgG, and IgM. Results: Compared to the reference level of 6.10–14.99 g/L, risk of pancreatic cancer was elevated among those with IgG levels <6.10 g/L [HR: 1.69 (95% CI 0.99–2.87)], and an inverse association was observed among those with IgG levels ≥15.00 g/L [0.82 (95% CI 0.64–1.05); Ptrend = 0.027]. The association appeared to be stronger for women than men [HR: 0.64 (95% CI 0.43–0.97) and 0.95 (95% CI 0.69–1.29), respectively]. No associations were observed with IgA or IgM. Conclusion: An inverse association was observed between pre-diagnostic serum levels of IgG and risk of pancreatic cancer. Our findings highlight the need to further investigate the role of immune response in pancreatic cancer etiology.
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Affiliation(s)
- Sam Sollie
- Translational Oncology & Urology Research (TOUR), School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Aida Santaolalla
- Translational Oncology & Urology Research (TOUR), School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Dominique S Michaud
- Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, MA, United States.,Department of Epidemiology, Brown University School of Public Health, Providence, RI, United States
| | - Debashis Sarker
- Translational Oncology & Urology Research (TOUR), School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom.,Department of Medical Oncology, Guy's and St Thomas' NHS Trust, London, United Kingdom
| | - Sophia N Karagiannis
- St John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, United Kingdom
| | - Debra H Josephs
- Translational Oncology & Urology Research (TOUR), School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom.,Department of Medical Oncology, Guy's and St Thomas' NHS Trust, London, United Kingdom
| | - Niklas Hammar
- Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Goran Walldius
- Unit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Hans Garmo
- Translational Oncology & Urology Research (TOUR), School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Lars Holmberg
- Translational Oncology & Urology Research (TOUR), School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Ingmar Jungner
- Clinical Epidemiological Unit, Department of Medicine, Karolinska Institutet and CALAB Research, Stockholm, Sweden
| | - Mieke Van Hemelrijck
- Translational Oncology & Urology Research (TOUR), School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom.,Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
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28
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Radunović M, Petrini M, Vlajic T, Iezzi G, Di Lodovico S, Piattelli A, D'Ercole S. Effects of a novel gel containing 5-aminolevulinic acid and red LED against bacteria involved in peri-implantitis and other oral infections. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 205:111826. [PMID: 32146270 DOI: 10.1016/j.jphotobiol.2020.111826] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/10/2020] [Accepted: 02/17/2020] [Indexed: 01/19/2023]
Abstract
Antibiotic resistance is a major public health problem worldwide and the finding of alternative methods for eliminating bacteria is one of the prerogatives of medical research. The indiscriminate use of antibiotics in dentistry, especially for the treatment of peri-implantitis, could lead to superinfections. Alternative methods, like photodynamic therapy mediated by the use of aminolevulinic acid and a red light has been largely described, especially in dentistry, but results were encouraging against Gram-positive bacteria, but limited against Gram-negative. The effectiveness of photodynamic therapy mediated by a novel product containing aminolevulinic acid, Aladent (ALAD) has been tested in this in vitro study, against different types of bacteria particularly involved in the infections of the oral cavity and peri-implantitis. The novelty of ALAD is the marked hydrophilicity that should increase the passage of the molecule through the membrane pores of Gram-negative bacteria. Considering the novelty of the product a preliminary experiment permitted to test the effectiveness against Enterococcus faecalis after 1 h of ALAD incubation at different concentrations, with or without different timings of LED irradiation. The count of CFUs and the live/dead observation with fluorescent microscopy showed a significant reduction and killing of bacterium. Then, in the second stage, that could meet the necessity of effectiveness and the clinician's requests to reduce the timing of treatment, ALAD, with and without irradiation, was tested on Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Veillonella parvula and Porphyromonas gingivalis. In particular, the efficiency of different concentrations of the product after a 25 min incubation was tested with and without the adjunctive LED irradiation for 5 min. A slight ALAD bactericidal effect was reported for all bacteria, also without LED irradiation, however, the most effective treatment was 25 min of 50% ALAD incubation followed by 5 min of a red LED. The in vitro tests demonstrated that ALAD gel with LED irradiation exerts a potent antibacterial activity on different bacteria, both Gram-positive and Gram-negative.
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Affiliation(s)
- M Radunović
- Laboratory for Microbiology, School of Dental Medicine, University of Belgrade, Serbia
| | - M Petrini
- Specialist in Oral Surgery, Department of Medical, Oral and Biotechnological Science, University G. d'Annunzio of Chieti, Italy.
| | - T Vlajic
- Laboratory for Microbiology, School of Dental Medicine, University of Belgrade, Serbia
| | - G Iezzi
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti, Italy
| | - S Di Lodovico
- Microbiology Unit, Department of Pharmacy, University of Chieti, Italy
| | - A Piattelli
- Dean of Oral Pathology, Department of Medical, Oral and Biotechnological Sciences, University of Chieti, Italy, Ceo of Biomaterials Engineering, Universidad Catolica de San Antonio de Murcia, Spain, Fondazione Villa Serena per la Ricerca, Città S. Angelo, Italy
| | - S D'Ercole
- Microbiology and Paediatric Dentistry Unit, Department of Medical, Oral and Biotechnological Sciences, University of Chieti, Via dei Vestini 31, 66013, Italy
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