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Chen KM, Sun YW, Krebs NM, Sun D, Krzeminski J, Reinhart L, Gowda K, Amin S, Mallery S, Richie JP, El-Bayoumy K. Detection of DNA adducts derived from the tobacco carcinogens, benzo[a]pyrene and dibenzo[def,p]chrysene in human oral buccal cells. Carcinogenesis 2022; 43:746-753. [PMID: 35749296 PMCID: PMC9486590 DOI: 10.1093/carcin/bgac058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 06/20/2022] [Accepted: 06/23/2022] [Indexed: 11/14/2022] Open
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are recognized as potential etiological agents in the development of oral cancer in smokers. In particular, benzo[a]pyrene (B[a]P) and dibenzo[def,p]chrysene (DB[a,l]P) are detected in cigarette smoke and the environment and can induce DNA damage, mutagenesis and carcinogenesis in the oral cavity of rodents. Consequently, DNA adducts are regarded as the most direct markers of genotoxicity and can be used as biomarkers of cancer risk. Thus, this study used LC-MS/MS analysis with isotope labeled internal standard to detect and quantify DNA adducts derived from B[a]P and DB[a,l]P in buccal cells of cigarette smokers and non-smokers. Participants in this study include 21 smokers and 16 non-smokers. Our data are the first to report that levels (mean ± SD) of BPDE-N2-dG were significantly (P < 0.001) higher in smokers (20.18 ± 8.40 adducts/108 dG) than in non-smokers (0.84 ± 1.02 adducts/108 dG). Likewise, levels of DBPDE-N6-dA in smokers (5.49 ± 3.41 adducts/108 dA) were significantly higher (P = 0.019) than non-smokers (2.76 ± 2.29 adducts/108 dA). Collectively, the results of this clinical study support that PAHs in tobacco smoke can contribute to the development of oral cancer in humans.
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Affiliation(s)
- Kun-Ming Chen
- Department of Biochemistry and Molecular Biology, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Yuan-Wan Sun
- Department of Biochemistry and Molecular Biology, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Nicolle M Krebs
- Department of Public Health Sciences, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Dongxiao Sun
- Department of Pharmacology, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Jacek Krzeminski
- Department of Pharmacology, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Lisa Reinhart
- Department of Public Health Sciences, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Krishne Gowda
- Department of Pharmacology, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Shantu Amin
- Department of Pharmacology, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Susan Mallery
- College of Dentistry, Division of Oral Maxillofacial Pathology, Ohio State University, Columbus, OH, USA
| | - John P Richie
- Department of Public Health Sciences, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Karam El-Bayoumy
- Department of Biochemistry and Molecular Biology, Pennsylvania State University College of Medicine, Hershey, PA, USA
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2
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Warnakulasuriya S, Straif K. Carcinogenicity of smokeless tobacco: Evidence from studies in humans & experimental animals. Indian J Med Res 2018; 148:681-686. [PMID: 30778001 PMCID: PMC6396560 DOI: 10.4103/ijmr.ijmr_149_18] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Indexed: 12/31/2022] Open
Abstract
A Working Group of the Monographs programme of the International Agency for Research on Cancer has classified smokeless tobacco as carcinogenic to humans (Group 1). This review article summarizes the data that support the evaluations of sufficient evidence in humans and in experimental animals for the carcinogenicity of smokeless tobacco whether used alone or with betel quid. It also identifies compounds of smokeless tobacco relevant to carcinogenicity (prominently tobacco-specific nitrosamines) and addiction (nicotine). The epidemiological evidence is summarized for oral cancer, other cancers associated with smokeless tobacco and oral potentially malignant lesions with a focus on analytical studies from the SEARO Region. Studies on cancer in experimental animals are summarized with a focus on studies applying smokeless tobacco products typical for the regions, such as mishri and naswar.
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Affiliation(s)
| | - Kurt Straif
- Section of Evidence Synthesis and Classification, International Agency for Research on Cancer, Lyon, France
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3
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Porter S, Gueiros LA, Leão JC, Fedele S. Risk factors and etiopathogenesis of potentially premalignant oral epithelial lesions. Oral Surg Oral Med Oral Pathol Oral Radiol 2018; 125:603-611. [PMID: 29891084 DOI: 10.1016/j.oooo.2018.03.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 03/03/2018] [Accepted: 03/06/2018] [Indexed: 12/27/2022]
Abstract
Potentially malignant oral mucosal disease has some ability to give rise to malignancy of the oral epithelium, that is, oral squamous cell carcinoma (OSCC). The present article provides a succinct review of the possible or probable causes of potentially premalignant oral epithelial lesions. There is a focus upon studies that examined the causes or etiologic associations with clinically likely or histopathologically detectable oral epithelial dysplasia.
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Affiliation(s)
| | - Luiz Alcino Gueiros
- Oral Medicine Unit. Departamento de Clínica e Odontologia Preventiva, Universidade Federal de Pernambuco, Brazil
| | - Jair Carneiro Leão
- Oral Medicine Unit. Departamento de Clínica e Odontologia Preventiva, Universidade Federal de Pernambuco, Brazil
| | - Stefano Fedele
- UCL Eastman Dental Institute, London, UK; Oral Theme of the UCL/UCLH NIHR Biomedical Research Centre, UK
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4
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Supsavhad W, Dirksen WP, Martin CK, Rosol TJ. Animal models of head and neck squamous cell carcinoma. Vet J 2015; 210:7-16. [PMID: 26965084 DOI: 10.1016/j.tvjl.2015.11.006] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 11/02/2015] [Accepted: 11/11/2015] [Indexed: 12/18/2022]
Abstract
Head and neck squamous cell carcinoma (HNSCC) is the most common oral cancer worldwide. Local bone invasion into the maxilla or mandible and metastasis to regional lymph nodes often result in a poor prognosis, decreased quality of life and shortened survival time for HNSCC patients. Poor response to treatment and clinical outcomes are the major concerns in this aggressive cancer. Multiple animal models have been developed to replicate spontaneous HNSCC and investigate genetic alterations and novel therapeutic targets. This review provides an overview of HNSCC as well as the traditional animal models used in HNSCC preclinical research. The value and challenges of each in vivo model are discussed. Similarity between HNSCC in humans and cats and the possibility of using spontaneous feline oral squamous cell carcinoma (FOSCC) as a model for HNSCC in translational research are highlighted.
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Affiliation(s)
- Wachiraphan Supsavhad
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, 1925 Coffey Road, Columbus, OH 43210, USA
| | - Wessel P Dirksen
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, 1925 Coffey Road, Columbus, OH 43210, USA
| | - Chelsea K Martin
- Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, Charlottetown, Prince Edward Island C1A 4P3, Canada
| | - Thomas J Rosol
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, 1925 Coffey Road, Columbus, OH 43210, USA.
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5
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Han BB, Li S, Tong M, Holpuch AS, Spinney R, Wang D, Border MB, Liu Z, Sarode S, Pei P, Schwendeman SP, Mallery SR. Fenretinide Perturbs Focal Adhesion Kinase in Premalignant and Malignant Human Oral Keratinocytes. Fenretinide's Chemopreventive Mechanisms Include ECM Interactions. Cancer Prev Res (Phila) 2015; 8:419-30. [PMID: 25712051 PMCID: PMC4417376 DOI: 10.1158/1940-6207.capr-14-0418] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 02/16/2015] [Indexed: 12/21/2022]
Abstract
The membrane-associated protein, focal adhesion kinase (FAK), modulates cell-extracellular matrix interactions and also conveys prosurvival and proliferative signals. Notably, increased intraepithelial FAK levels accompany transformation of premalignant oral intraepithelial neoplasia (OIN) to oral squamous cell carcinoma (OSCC). OIN chemoprevention is a patient-centric, optimal strategy to prevent OSCC's comorbidities and mortality. The cancer chemopreventive and synthetic vitamin A derivative, fenretinide, has demonstrated protein-binding capacities, for example, mTOR- and retinol-binding protein interactions. These studies used a continuum of human oral keratinocytes (normal-HPV E6/E7-transduced-OSCC) to assess potential fenretinide-FAK drug protein interactions and functional consequences on cellular growth regulation and motility. Molecular modeling studies demonstrated that fenretinide has approximately 200-fold greater binding affinity relative to the natural ligand (ATP) at FAK's kinase domain. Fenretinide also shows intermediate binding at FAK's FERM domain and interacts at the ATP-binding site of the closest FAK analogue, PYK2. Fenretinide significantly suppressed proliferation via induction of apoptosis and G2-M cell-cycle blockade. Fenretinide-treated cells also demonstrated F-actin disruption, significant inhibition of both directed migration and invasion of a synthetic basement membrane, and decreased phosphorylation of growth-promoting kinases. A commercially available FAK inhibitor did not suppress cell invasion. Notably, although FAK's FERM domain directs cell invasion, FAK inhibitors target the kinase domain. In addition, FAK-specific siRNA-treated cells showed an intermediate cell migration capacity; data which suggest cocontribution of the established migrating-enhancing PYK2. Our data imply that fenretinide is uniquely capable of disrupting FAK's and PYK2's prosurvival and mobility-enhancing effects and further extend fenretinide's chemopreventive contributions beyond induction of apoptosis and differentiation.
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Affiliation(s)
- Byungdo B Han
- Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Suyang Li
- Division of Oral Maxillofacial Pathology and Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Meng Tong
- Division of Oral Maxillofacial Pathology and Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Andrew S Holpuch
- Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Richard Spinney
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio
| | - Daren Wang
- Division of Oral Maxillofacial Pathology and Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Michael B Border
- Division of Oral Maxillofacial Pathology and Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Zhongfa Liu
- Division of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Sachin Sarode
- Division of Oral Maxillofacial Pathology and Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Ping Pei
- Division of Oral Maxillofacial Pathology and Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | | | - Susan R Mallery
- Division of Oral Maxillofacial Pathology and Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio. The Ohio State University Comprehensive Cancer, Columbus, Ohio.
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Warner BM, Casto BC, Knobloch TJ, Accurso BT, Weghorst CM. Chemoprevention of oral cancer by topical application of black raspberries on high at-risk mucosa. Oral Surg Oral Med Oral Pathol Oral Radiol 2014; 118:674-83. [PMID: 25457886 PMCID: PMC4254525 DOI: 10.1016/j.oooo.2014.09.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 09/02/2014] [Accepted: 09/04/2014] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To evaluate the preclinical efficacy of topical administration of freeze-dried black raspberries (BRBs) to inhibit the progression of premalignant oral lesions and modulate biomarkers of cancer development in high at-risk mucosa (HARM). STUDY DESIGN Hamster cheek pouches (HCPs) were treated with carcinogen for 6 weeks to initiate a HARM microenvironment. Subsequently, right HCPs were topically administered a BRB suspension in short-term or long-term studies. After 12 weeks, squamous cell carcinoma (SCC) multiplicity, SCC incidence, and cell proliferation rates were evaluated. mRNA expression was measured in short-term treated pouches for selected oral cancer biomarkers. RESULTS SCC multiplicity (-41.3%), tumor incidence (-37.1%), and proliferation rate (-6.9%) were reduced in HCPs receiving BRBs. Topical BRBs correlated with an increase in RB1 expression in developing oral lesions. CONCLUSIONS Topical BRBs inhibit SCC development when targeted to HARM tissues. These results support the translational role of BRBs to prevent oral cancer development in humans.
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Affiliation(s)
- Blake M Warner
- University College of Public Health, The Ohio State University, Columbus, OH, USA; College of Dentistry The Ohio State University, Columbus, OH, USA; School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
| | - Bruce C Casto
- University College of Public Health, The Ohio State University, Columbus, OH, USA; Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Thomas J Knobloch
- University College of Public Health, The Ohio State University, Columbus, OH, USA; Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Brent T Accurso
- College of Dentistry The Ohio State University, Columbus, OH, USA
| | - Christopher M Weghorst
- University College of Public Health, The Ohio State University, Columbus, OH, USA; Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
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7
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Zhang SM, Chen KM, Sun YW, Aliaga C, Lin JM, Sharma AK, Amin S, El-Bayoumy K. Simultaneous detection of deoxyadenosine and deoxyguanosine adducts in the tongue and other oral tissues of mice treated with Dibenzo[a,l]pyrene. Chem Res Toxicol 2014; 27:1199-206. [PMID: 24911113 PMCID: PMC4106691 DOI: 10.1021/tx5001078] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
We
were the first to demonstrate that direct application of the
environmental pollutant and tobacco smoke constituent dibenzo[a,l]pyrene (DB[a,l]P) into the oral cavity of mice induced squamous cell
carcinoma (SCC) in oral tissues but not in the tongue; however, the
mechanisms that can account for the varied carcinogenicity remain
to be determined. Furthermore, we also showed that not only dA adducts,
but also dG adducts can account for the mutagenic activity of DB[a,l]P in the oral tissues in vivo. In this study, we initially focused on DB[a,l]P-induced genotoxic effects in both oral and tongue tissues.
Therefore, to fully assess the contribution of these DNA adducts in
the initiation stage of carcinogenesis induced by DB[a,l]P, an LC-MS/MS method to simultaneously detect
and quantify DB[a,l]PDE-dG and -dA
adducts was developed. Mice were orally administered with DB[a,l]P (24 nmole, 3 times per week for 5
weeks) or its fjord region diol epoxide, (±)-anti-11,12-dihydroxy-13,14-epoxy-11,12,13,14-tetrahydrodibenzo[a,l]pyrene (DB[a,l]PDE, 12 nmole, single application); animals were sacrificed
at 2, 7, 14, and 28 days after the last dose of carcinogen administration.
Oral and tongue tissues were obtained and DNA were isolated followed
by enzymatic hydrolysis. Following the development of an isotope dilution
LC-MS/MS method, we successfully detected (−)-anti-cis- and (−)-anti-trans-DB[a,l]PDE-N2-dG, as well as (−)-anti-cis- and (−)-anti-trans-DB[a,l]PDE-N6-dA in oral and tongue
tissues of mice treated with DB[a,l]P. Levels of (−)-anti-trans-DB[a,l]PDE-N6-dA were
≥2 folds higher than (−)-anti-cis-DB[a,l]PDE-N6-dA adduct and those of dG adducts in the oral tissues and tongue
at all time points selected after the cessation of DB[a,l]P treatment. Levels of dG adducts were comparable
in both tissues. Collectively, our results support that DB[a,l]P is predominantly metabolized to (−)-anti-DB[a,l]PDE, and the
levels and persistence of (−)-anti-trans-DB[a,l]PDE-N6-dA may, in part, explain the carcinogenicity of DB[a,l]P in the oral tissues but not in the
tongue.
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Affiliation(s)
- Shang-Min Zhang
- Dept. of Biochemistry and Molecular Biology, Penn State College of Medicine , Hershey, Pennsylvania 17033, United States
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