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Adami GR, Tangney C, Schwartz JL, Dang KC. Gut/Oral Bacteria Variability May Explain the High Efficacy of Green Tea in Rodent Tumor Inhibition and Its Absence in Humans. Molecules 2020; 25:molecules25204753. [PMID: 33081212 PMCID: PMC7594096 DOI: 10.3390/molecules25204753] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/09/2020] [Accepted: 10/12/2020] [Indexed: 02/07/2023] Open
Abstract
Consumption of green tea (GT) and GT polyphenols has prevented a range of cancers in rodents but has had mixed results in humans. Human subjects who drank GT for weeks showed changes in oral microbiome. However, GT-induced changes in RNA in oral epithelium were subject-specific, suggesting GT-induced changes of the oral epithelium occurred but differed across individuals. In contrast, studies in rodents consuming GT polyphenols revealed obvious changes in epithelial gene expression. GT polyphenols are poorly absorbed by digestive tract epithelium. Their metabolism by gut/oral microbial enzymes occurs and can alter absorption and function of these molecules and thus their bioactivity. This might explain the overall lack of consistency in oral epithelium RNA expression changes seen in human subjects who consumed GT. Each human has different gut/oral microbiomes, so they may have different levels of polyphenol-metabolizing bacteria. We speculate the similar gut/oral microbiomes in, for example, mice housed together are responsible for the minimal variance observed in tissue GT responses within a study. The consistency of the tissue response to GT within a rodent study eases the selection of a dose level that affects tumor rates. This leads to the theory that determination of optimal GT doses in a human requires knowledge about the gut/oral microbiome in that human.
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Affiliation(s)
- Guy R. Adami
- Department of Oral Medicine & Diagnostic Sciences, Center for Molecular Biology of Oral Diseases, College of Dentistry, University of Illinois at Chicago, 801 South Paulina Street, Chicago, IL 60612, USA; (J.L.S.); (K.C.D.)
- Correspondence: ; Tel.: +1-312-996-6251
| | - Christy Tangney
- Department of Clinical Nutrition, College of Health Sciences, Rush University Medical Center, 600 South Paulina St, Room 716 AAC, Chicago, IL 60612, USA;
| | - Joel L. Schwartz
- Department of Oral Medicine & Diagnostic Sciences, Center for Molecular Biology of Oral Diseases, College of Dentistry, University of Illinois at Chicago, 801 South Paulina Street, Chicago, IL 60612, USA; (J.L.S.); (K.C.D.)
| | - Kim Chi Dang
- Department of Oral Medicine & Diagnostic Sciences, Center for Molecular Biology of Oral Diseases, College of Dentistry, University of Illinois at Chicago, 801 South Paulina Street, Chicago, IL 60612, USA; (J.L.S.); (K.C.D.)
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APPBP2 enhances non-small cell lung cancer proliferation and invasiveness through regulating PPM1D and SPOP. EBioMedicine 2019; 44:138-149. [PMID: 31105033 PMCID: PMC6604516 DOI: 10.1016/j.ebiom.2019.05.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/15/2019] [Accepted: 05/10/2019] [Indexed: 12/15/2022] Open
Abstract
Background The influence of amyloid protein-binding protein 2 (APPBP2) on lung cancer is unknown. Methods The function and mechanisms of APPBP2 were investigated in the NSCLC cell lines A549 and H1299. The ectopic expression of APPBP2, PPM1D and SPOP in NSCLS were examined in samples collected from ten pairs of human lung adenocarcinoma cancer tissues and adjacent normal lung tissues. shRNA vector was used for APPBP2 knockdown. Quantitative PCR and western blot assays quantified the mRNA and protein level of APPBP2, PPM1D, and SPOP. Cell proliferation was measured with BrdU, MTT, colony formation assays, and xenograft tumour growth experiments. Cell migration and invasion were analysed with transwell and wound healing assays. Co-Immunoprecipitation assay detected protein–protein interactions. Findings APPBP2 was upregulated in NSCLC tissues. Silencing APPBP2 in A549 and H1299 cells resulted in the inhibition of cell proliferation, migration, and invasion, enhancement of apoptosis, and a significant decrease in the expression of PPM1D and SPOP. Overexpression of PPM1D and SPOP attenuated the APPBP2-knockdown inhibition of NSCLC cells. Co-IP assay showed that PPM1D interacted with APPBP2. Interpretation The expression level of APPBP2 positively correlates with NSCLC cell proliferation, migration, and invasiveness. APPBP2 contributes to NSCLC progression through regulating the PPM1D and SPOP signalling pathway. This novel molecular mechanism, underlying NSCLC oncogenesis, suggests APPBP2 is a potential target for diagnosis and therapeutic intervention in NSCLC. Fund Key Program of Natural Science Research of Higher Education of Anhui Province (No. KJ2017A241), the National Natural Science Foundation of China (No. 81772493).
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Shen S, Bai J, Wei Y, Wang G, Li Q, Zhang R, Duan W, Yang S, Du M, Zhao Y, Christiani DC, Chen F. A seven-gene prognostic signature for rapid determination of head and neck squamous cell carcinoma survival. Oncol Rep 2017; 38:3403-3411. [PMID: 29130107 PMCID: PMC5783586 DOI: 10.3892/or.2017.6057] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 10/02/2017] [Indexed: 12/15/2022] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is the sixth most common cancer and displays divergent clinical outcomes. Prognostic biomarkers might improve risk stratification and survival prediction. We aimed to investigate the prognostic genes associated with overall survival. A two-step gene selection method was used to develop a seven-gene-based prognostic model based on the training set collected from The Cancer Genome Atlas (TCGA). In addition, the prognostic model was validated in an independent testing set from Gene Expression Omnibus (GEO). The score based on the model successfully distinguished HNSCC survival into high-risk and low-risk groups in the training set (HR, 2.79; 95% CI, 1.98–3.92; P=4.05×10−9) and the testing set (HR, 2.05; 95% CI, 1.35–3.11; P=7.98×10−4). In addition, the score could significantly predict 5-year survival by ROC curves (AUCs for training set, 0.73; testing set, 0.66). Combining risk scores with clinical characteristics improved the AUCs beyond using clinical characteristics alone (training set, from 0.57 to 0.75; testing set, from 0.63 to 0.72). A subgroup sensitivity analysis with HPV status and tumor sites revealed that the risk score was significant in all subgroups except oral cavity tumors of the testing set. Furthermore, HPV-positive status improves survival in oropharyngeal HNSCC but not non-oropharyngeal HNSCC. In conclusion, the seven-gene prognostic signature is a reliable and practical prognostic tool for HNSCC. This approach can add prognostic value to clinical characteristics and provides a new possibility for individualized treatment.
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Affiliation(s)
- Sipeng Shen
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, P.R. China
| | - Jianling Bai
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, P.R. China
| | - Yongyue Wei
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, P.R. China
| | - Guanrong Wang
- NPFPC Contraceptive Adverse Reaction Surveillance Center, Jiangsu Institute of Planned Parenthood Research, Nanjing, Jiangsu, P.R. China
| | - Qingya Li
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, P.R. China
| | - Ruyang Zhang
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, P.R. China
| | - Weiwei Duan
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, P.R. China
| | - Sheng Yang
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, P.R. China
| | - Mulong Du
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, P.R. China
| | - Yang Zhao
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, P.R. China
| | - David C Christiani
- China International Cooperation Center of Environment and Human Health, Nanjing Medical University, Nanjing, Jiangsu, P.R. China
| | - Feng Chen
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, P.R. China
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Joury E, Naja F, Nour A, Itani L, Rafii B, Nakhleh K, Manadili A. Dietary patterns and the risk of oral, pharyngeal and laryngeal cancer in Syria: a case control study. BMC Nutr 2016. [DOI: 10.1186/s40795-016-0048-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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François M, Leifert W, Martins R, Thomas P, Fenech M. Biomarkers of Alzheimer's disease risk in peripheral tissues; focus on buccal cells. Curr Alzheimer Res 2015; 11:519-31. [PMID: 24938500 PMCID: PMC4166904 DOI: 10.2174/1567205011666140618103827] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 05/26/2014] [Accepted: 06/16/2014] [Indexed: 12/29/2022]
Abstract
Alzheimer's disease (AD) is a progressive degenerative disorder of the brain and is the most common form of dementia. To-date no simple, inexpensive and minimally invasive procedure is available to confirm with certainty the early diagnosis of AD prior to the manifestations of symptoms characteristic of the disease. Therefore, if population screening of individuals is to be performed, more suitable, easily accessible tissues would need to be used for a diagnostic test that would identify those who exhibit cellular pathology indicative of mild cognitive impairment (MCI) and AD risk so that they can be prioritized for primary prevention. This need for minimally invasive tests could be achieved by targeting surrogate tissues, since it is now well recognized that AD is not only a disorder restricted to pathology and biomarkers within the brain. Human buccal cells for instance are accessible in a minimally invasive manner, and exhibit cytological and nuclear morphologies that may be indicative of accelerated ageing or neurodegenerative disorders such as AD. However, to our knowledge there is no review available in the literature covering the biology of buccal cells and their applications in AD biomarker research. Therefore, the aim of this review is to summarize some of the main findings of biomarkers reported for AD in peripheral tissues, with a further focus on the rationale for the use of the buccal mucosa (BM) for biomarkers of AD and the evidence to date of changes exhibited in buccal cells with AD.
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Affiliation(s)
| | | | | | | | - Michael Fenech
- CSIRO Animal, Food and Health Sciences, Gate 13, Kintore Ave, Adelaide, South Australia, 5000, Australia.
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Protection of dietary polyphenols against oral cancer. Nutrients 2013; 5:2173-91. [PMID: 23771133 PMCID: PMC3725499 DOI: 10.3390/nu5062173] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 04/24/2013] [Accepted: 05/28/2013] [Indexed: 12/22/2022] Open
Abstract
Oral cancer represents a health burden worldwide with approximate 275,000 new cases diagnosed annually. Its poor prognosis is due to local tumor invasion and frequent lymph node metastasis. Better understanding and development of novel treatments and chemo-preventive approaches for the preventive and therapeutic intervention of this type of cancer are necessary. Recent development of dietary polyphenols as cancer preventives and therapeutic agents is of great interest due to their antioxidant and anti-carcinogenic activities. Polyphenols may inhibit carcinogenesis in the stage of initiation, promotion, or progression. In particular, dietary polyphenols decrease incidence of carcinomas and exert protection against oral cancer by induction of cell death and inhibition of tumor growth, invasion, and metastasis. In this review, we discuss current progress of dietary polyphenols against oral cancers in vitro, in vivo, and at population levels.
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Chaker S, Kashat L, Voisin S, Kaur J, Kak I, MacMillan C, Ozcelik H, Michael Siu KW, Ralhan R, Walfish PG. Secretome proteins as candidate biomarkers for aggressive thyroid carcinomas. Proteomics 2013; 13:771-87. [DOI: 10.1002/pmic.201200356] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 11/15/2012] [Accepted: 12/10/2012] [Indexed: 12/28/2022]
Affiliation(s)
- Seham Chaker
- Alex and Simona Shnaider Laboratory in Molecular Oncology; Samuel Lunenfeld Research Institute; Mount Sinai Hospital; Toronto ON Canada
- Institute of Medical Science; University of Toronto; Toronto ON Canada
| | - Lawrence Kashat
- Alex and Simona Shnaider Laboratory in Molecular Oncology; Samuel Lunenfeld Research Institute; Mount Sinai Hospital; Toronto ON Canada
| | - Sebastien Voisin
- Department of Chemistry and Centre for Research in Mass Spectrometry; York University; Toronto ON Canada
| | - Jatinder Kaur
- Alex and Simona Shnaider Laboratory in Molecular Oncology; Samuel Lunenfeld Research Institute; Mount Sinai Hospital; Toronto ON Canada
| | - Ipshita Kak
- Alex and Simona Shnaider Laboratory in Molecular Oncology; Samuel Lunenfeld Research Institute; Mount Sinai Hospital; Toronto ON Canada
| | - Christina MacMillan
- Department of Pathology & Laboratory Medicine; Mount Sinai Hospital; Toronto ON Canada
| | - Hilmi Ozcelik
- Samuel Lunenfeld Research Institute; Mount Sinai Hospital L6-303; Toronto ON Canada
| | - K. W. Michael Siu
- Department of Chemistry and Centre for Research in Mass Spectrometry; York University; Toronto ON Canada
| | - Ranju Ralhan
- Alex and Simona Shnaider Laboratory in Molecular Oncology; Samuel Lunenfeld Research Institute; Mount Sinai Hospital; Toronto ON Canada
- Institute of Medical Science; University of Toronto; Toronto ON Canada
- Department of Pathology & Laboratory Medicine; Mount Sinai Hospital; Toronto ON Canada
- Joseph and Mildred Sonshine Family Centre for Head and Neck Diseases; Department of Otolaryngology-Head and Neck Surgery Program; Mount Sinai Hospital; Toronto ON Canada
- Department of Otolaryngology-Head and Neck Surgery; University of Toronto; Toronto ON Canada
| | - Paul G. Walfish
- Alex and Simona Shnaider Laboratory in Molecular Oncology; Samuel Lunenfeld Research Institute; Mount Sinai Hospital; Toronto ON Canada
- Institute of Medical Science; University of Toronto; Toronto ON Canada
- Department of Pathology & Laboratory Medicine; Mount Sinai Hospital; Toronto ON Canada
- Joseph and Mildred Sonshine Family Centre for Head and Neck Diseases; Department of Otolaryngology-Head and Neck Surgery Program; Mount Sinai Hospital; Toronto ON Canada
- Department of Medicine; Endocrine Division; Mount Sinai Hospital and University of Toronto Medical School; Toronto ON Canada. Department of Otolaryngology-Head and Neck Surgery; University of Toronto; Toronto ON Canada
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Spencer P, Fry RC, Kisby GE. Unraveling 50-Year-Old Clues Linking Neurodegeneration and Cancer to Cycad Toxins: Are microRNAs Common Mediators? Front Genet 2012; 3:192. [PMID: 23060898 PMCID: PMC3460211 DOI: 10.3389/fgene.2012.00192] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Accepted: 09/09/2012] [Indexed: 01/19/2023] Open
Abstract
Recognition of overlapping molecular signaling activated by a chemical trigger of cancer and neurodegeneration is new, but the path to this discovery has been long and potholed. Six conferences (1962–1972) examined the puzzling neurotoxic and carcinogenic properties of a then-novel toxin [cycasin: methylazoxymethanol (MAM)-β-d-glucoside] in cycad plants used traditionally for food and medicine on Guam where a complex neurodegenerative disease plagued the indigenous population. Affected families showed combinations of amyotrophic lateral sclerosis (ALS), parkinsonism (P), and/or a dementia (D) akin to Alzheimer’s disease (AD). Modernization saw declining disease rates on Guam and remarkable changes in clinical phenotype (ALS was replaced by P-D and then by D) and in two genetically distinct ALS-PDC-affected populations (Kii-Japan, West Papua-Indonesia) that used cycad seed medicinally. MAM forms DNA lesions – repaired by O6-methylguanine methyltransferase (MGMT) – that perturb mouse brain development and induce malignant tumors in peripheral organs. The brains of young adult MGMT-deficient mice given a single dose of MAM show DNA lesion-linked changes in cell-signaling pathways associated with miRNA-1, which is implicated in colon, liver, and prostate cancers, and in neurological disease, notably AD. MAM is metabolized to formaldehyde, a human carcinogen. Formaldehyde-responsive miRNAs predicted to modulate MAM-associated genes in the brains of MGMT-deficient mice include miR-17-5p and miR-18d, which regulate genes involved in tumor suppression, DNA repair, amyloid deposition, and neurotransmission. These findings marry cycad-associated ALS-PDC with colon, liver, and prostate cancer; they also add to evidence linking changes in microRNA status both to ALS, AD, and parkinsonism, and to cancer initiation and progression.
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Affiliation(s)
- Peter Spencer
- Global Health Center, Oregon Health and Science University Portland, OR, USA
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Peters HL, Tuli A, Sharma M, Naslavsky N, Caplan S, MacDonald RG, Solheim JC. Regulation of major histocompatibility complex class I molecule expression on cancer cells by amyloid precursor-like protein 2. Immunol Res 2012; 51:39-44. [PMID: 21826533 DOI: 10.1007/s12026-011-8238-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The three members of the amyloid precursor protein family in mammals [amyloid precursor protein, amyloid precursor-like protein 1, and amyloid precursor-like protein 2 (APLP2)] have been implicated in a large array of intracellular processes, which include development, transcription, apoptosis, metabolism, and the cell cycle. A series of studies by our laboratories has demonstrated that APLP2 is highly expressed by many cancer cell lines (with the highest expression in pancreatic cancer cell lines) and that it facilitates major histocompatibility complex (MHC) class I molecule endocytosis. This review focuses on this recently revealed function of APLP2 relevant to tumor immunology: that it acts as a novel regulator of MHC class I molecule surface expression.
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Affiliation(s)
- Haley L Peters
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
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Lee UL, Choi SW. The chemopreventive properties and therapeutic modulation of green tea polyphenols in oral squamous cell carcinoma. ISRN ONCOLOGY 2011; 2011:403707. [PMID: 22084729 PMCID: PMC3197077 DOI: 10.5402/2011/403707] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Accepted: 03/20/2011] [Indexed: 11/23/2022]
Abstract
Chemoprevention is a relatively novel and promising approach for controlling cancer that uses specific natural products or synthetic agents to suppress, reverse, or prevent premalignancy before transformation into invasive cancer. Oral cavity squamous cell carcinoma (OCSCC) represents a large, worldwide health burden with approximately 274,000 cases diagnosed annually worldwide. Smoking and alcohol consumption are major inducers of OCSCC. Recently, the human papilloma virus was also shown to potentially be an etiologic factor. Due to its easily identifiable risk factors and the presence of premalignant regions, oral cancer makes a good candidate for chemoprevention. Green tea is the most widely consumed beverage in the world, and it has received considerable attention because of its abundant, scientifically proven, beneficial effects on human health. In this review, we discuss the role of green tea in oral cancer chemoprevention with regard to the multiple molecular mechanisms proposed in various in vitro, in vivo, and clinical trials.
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Affiliation(s)
- Ui-Lyong Lee
- Tooth Bioengineering National Research Lab, BK21, and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 110-749, Republic of Korea
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Kapoor S. Re: "Green tea consumption and prostate cancer risk in Japanese men: a prospective study". Am J Epidemiol 2008; 168:119. [PMID: 18487516 DOI: 10.1093/aje/kwn126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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