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Kumarasamy G, Mohd Salim NH, Mohd Afandi NS, Hazlami Habib MA, Mat Amin ND, Ismail MN, Musa M. Glycoproteomics-based liquid biopsy: translational outlook for colorectal cancer clinical management in Southeast Asia. Future Oncol 2023; 19:2313-2332. [PMID: 37937446 DOI: 10.2217/fon-2023-0704] [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] [Indexed: 11/09/2023] Open
Abstract
Colorectal cancer (CRC) signifies a significant healthcare challenge in Southeast Asia. Despite advancements in screening approaches and treatment modalities, significant medical gaps remain, ranging from prevention and early diagnosis to determining targeted therapy and establishing personalized approaches to managing CRC. There is a need to expand more validated biomarkers in clinical practice. An advanced technique incorporating high-throughput mass spectrometry as a liquid biopsy to unravel a repertoire of glycoproteins and glycans would potentially drive the development of clinical tools for CRC screening, diagnosis and monitoring, and it can be further adapted to the existing standard-of-care procedure. Therefore this review offers a perspective on glycoproteomics-driven liquid biopsy and its potential integration into the clinical care of CRC in the southeast Asia region.
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Affiliation(s)
- Gaayathri Kumarasamy
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Pulau Pinang, 11800, Malaysia
| | - Nurul Hakimah Mohd Salim
- Department of Pathology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, 16150, Malaysia
| | - Nur Syafiqah Mohd Afandi
- Analytical Biochemistry Research Centre, Universiti Sains Malaysia, Bayan Lepas, Pulau Pinang, 11900, Malaysia
| | - Mohd Afiq Hazlami Habib
- Analytical Biochemistry Research Centre, Universiti Sains Malaysia, Bayan Lepas, Pulau Pinang, 11900, Malaysia
| | - Nor Datiakma Mat Amin
- Analytical Biochemistry Research Centre, Universiti Sains Malaysia, Bayan Lepas, Pulau Pinang, 11900, Malaysia
- Nature Products Division, Forest Research Institute Malaysia, Kepong, Selangor, 52109, Malaysia
| | - Mohd Nazri Ismail
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Pulau Pinang, 11800, Malaysia
- Analytical Biochemistry Research Centre, Universiti Sains Malaysia, Bayan Lepas, Pulau Pinang, 11900, Malaysia
| | - Marahaini Musa
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, 16150, Malaysia
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Das R, Misra SR. A proposal to establish a biorepository/biobank for research in oral oncology. Oral Oncol 2022; 134:106136. [DOI: 10.1016/j.oraloncology.2022.106136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 09/17/2022] [Indexed: 11/25/2022]
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Sivolella S, Scanu A, Xie Z, Vianello S, Stellini E. Biobanking in dentistry: A review. JAPANESE DENTAL SCIENCE REVIEW 2022; 58:31-40. [PMID: 35024075 PMCID: PMC8728430 DOI: 10.1016/j.jdsr.2021.12.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 12/14/2021] [Accepted: 12/20/2021] [Indexed: 01/13/2023] Open
Abstract
Biobanks are not-for-profit services for the collection, processing, storage and distribution of biological samples and data for research and diagnostic purposes. In dentistry, biological materials and data obtained from questionnaires investigating oral conditions can be stored and used for large-scale studies on oral and systemic diseases. To give some examples: gene expression microarrays obtained on biobanked specimens were used in the identification of genetic alterations in oral cancer; efforts to identify genetic mechanisms behind dental caries have been based on an integrative analysis of transcriptome-wide associations and messenger RNA expression. One of the largest studies on facial pain was conducted using Biobank data. Cryopreservation of dental pulp stem cells is a common practice in tooth biobanks. With the exception of teeth and pulp, also leftover oral soft and hard tissues may represent a source of healthy samples that has rarely been exploited as yet. While biobanks are increasingly attracting the attention of the scientific community and becoming economically sustainable, a systematic approach to this resource in dentistry seems to be lacking. This review illustrates the applications of biobanking in dentistry, describing biobanked pathological and healthy samples and data, and discussing future developments.
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Affiliation(s)
- Stefano Sivolella
- Department of Neuroscience, Dentistry Section, University of Padova, Via Giustiniani 2, 35128 Padova, Italy
| | - Anna Scanu
- Department of Neuroscience, Dentistry Section, University of Padova, Via Giustiniani 2, 35128 Padova, Italy
| | - Zijing Xie
- Department of Neuroscience, Dentistry Section, University of Padova, Via Giustiniani 2, 35128 Padova, Italy
| | - Sara Vianello
- Department of Neuroscience, Neuromuscular Center, University of Padova, Via Giustiniani 2, 35128 Padova, Italy
| | - Edoardo Stellini
- Department of Neuroscience, Dentistry Section, University of Padova, Via Giustiniani 2, 35128 Padova, Italy
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Rich AM, Hussaini HM, Seo B, Zain RB. Understanding the complex microenvironment in oral cancer: the contribution of the Faculty of Dentistry, University of Otago over the last 100 years. J R Soc N Z 2020. [DOI: 10.1080/03036758.2020.1736586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Alison Mary Rich
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - Haizal Mohd Hussaini
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - Benedict Seo
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - Rosnah Bt Zain
- Faculty of Dentistry, MAHSA University, Selangor, Malaysia
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Ghani WMN, Ramanathan A, Prime SS, Yang YH, Razak IA, Abdul Rahman ZA, Abraham MT, Mustafa WMW, Tay KK, Kallarakkal TG, Doss JG, Cheong SC, Bustam AZ, Zain RB. Survival of Oral Cancer Patients in Different Ethnicities. Cancer Invest 2019; 37:275-287. [DOI: 10.1080/07357907.2019.1635614] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Wan Maria Nabillah Ghani
- Faculty of Dentistry, Oral Cancer Research and Coordinating Centre (OCRCC), University of Malaya, Kuala Lumpur, Malaysia
| | - Anand Ramanathan
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Stephen Stewart Prime
- Centre for Clinical and Diagnostic Oral Sciences, Institute of Dentistry, Barts and the London School of Dentistry, Queen Mary University of London, London, UK
| | - Yi-Hsin Yang
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ishak Abdul Razak
- Faculty of Dentistry, MAHSA University, Bandar Saujana Putra, Malaysia
| | - Zainal Ariff Abdul Rahman
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | | | | | - Keng Kiong Tay
- Oral Health Division, Ministry of Health, Putrajaya, Malaysia
| | - Thomas George Kallarakkal
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Jennifer Geraldine Doss
- Faculty of Dentistry, Oral Cancer Research and Coordinating Centre (OCRCC), University of Malaya, Kuala Lumpur, Malaysia
- Department of Community Oral Health and Clinical Prevention, Faculty of Dentistry, University of Malaya, Malaysia Kuala Lumpur, Malaysia
| | - Sok Ching Cheong
- Oral Cancer Research Team, Cancer Research Malaysia, Subang Jaya, Malaysia
| | - Anita Zarina Bustam
- Clinical Oncology Unit, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Rosnah Binti Zain
- Faculty of Dentistry, Oral Cancer Research and Coordinating Centre (OCRCC), University of Malaya, Kuala Lumpur, Malaysia
- Faculty of Dentistry, MAHSA University, Bandar Saujana Putra, Malaysia
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Goud EVSS, Malleedi S, Ramanathan A, Wong GR, Hwei Ern BT, Yean GY, Ann HH, Syan TY, Zain RM. Association of Interleukin-10 Genotypes and Oral Cancer Susceptibility in Selected Malaysian Population: A Case-
Control Study. Asian Pac J Cancer Prev 2019; 20:935-941. [PMID: 30912418 PMCID: PMC6825797 DOI: 10.31557/apjcp.2019.20.3.935] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Background: Interleukin-10 (IL10) genotypes have been closely correlated to the susceptibility for oral squamous cell carcinoma. More than half of oral cancers in the world occur in Asia with estimated 168,850 new cases were diagnosed in this geographical region alone. Considering the rising numbers of oral cancer cases in Malaysia, association of IL10 A1082G gene polymorphism was correlated. Methodology: 41 oral squamous cell carcinoma (OSCC) cases and 48 healthy controls of comparable age, gender, and with habits like smoking, alcohol consumption and betel quid chewing were selected. In this case-control study, samples were collected from the Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Malaysia. Genotyping conditions were evaluated by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP). The PCR products were subjected to digestion by MnlI enzyme (NEB, UK) to screen for the IL10 A-1082G. Digested DNA products were analyzed by electrophoresis on 4% (w/v) agarose gel, stained with ethidium bromide and imaged under UV illumination. Chi-square test and Fisher’s Exact test were used in statistical analysis. Results: AG genotypes were present in 81.3% and 86.0% of healthy control and OSCC cases respectively (OR=0.468, 95% CI=0.133-1.653). No significant association was found between IL10 A1082G polymorphism with risk habits, clinico-pathological parameters and 5-years overall survival. The findings also show no significant correlation between the IL10 genotype and features of OSCC within the case group as measured by tumor size, lymph node involvement, stage, invasive front, grading, depth, pattern of invasion. Conclusion: This study suggests that functional polymorphism AG of IL10 A1082G may have no influence with OSCC susceptibility. However, further investigation with larger sample sizes can be conducted to provide additional evidence to support the lack of association of IL10 A1082G polymorphism in oral cancer.
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Affiliation(s)
- E V Soma Sekhar Goud
- Department of Oral Maxillo-Facial Pathology and Microbiology, Faculty of Dentistry, MAHSA University, Kuala Lumpur, Malaysia.
| | - Shanthi Malleedi
- Department of Paediatric Dentistry, Faculty of Dentistry, MAHSA University, Kuala Lumpur, Malaysia
| | - Anand Ramanathan
- Department of Oral & Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Gou Rean Wong
- Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Beatrix Tan Hwei Ern
- Department of Oral Maxillo-Facial Pathology and Microbiology, Faculty of Dentistry, MAHSA University, Kuala Lumpur, Malaysia.
| | - Goh Yin Yean
- Department of Oral Maxillo-Facial Pathology and Microbiology, Faculty of Dentistry, MAHSA University, Kuala Lumpur, Malaysia.
| | - Ho Hui Ann
- Department of Oral Maxillo-Facial Pathology and Microbiology, Faculty of Dentistry, MAHSA University, Kuala Lumpur, Malaysia.
| | - Tan Yuen Syan
- Department of Oral Maxillo-Facial Pathology and Microbiology, Faculty of Dentistry, MAHSA University, Kuala Lumpur, Malaysia.
| | - Rosnah Mohd Zain
- Department of Oral Maxillo-Facial Pathology and Microbiology, Faculty of Dentistry, MAHSA University, Kuala Lumpur, Malaysia. ,Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
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Ghani WMN, Razak IA, Doss JG, Yang YH, Rahman ZAA, Ismail SM, Abraham MT, Wan Mustafa WM, Tay KK, Zain RB. Multi-ethnic variations in the practice of oral cancer risk habits in a developing country. Oral Dis 2018; 25:447-455. [DOI: 10.1111/odi.12995] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 10/02/2018] [Accepted: 10/11/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Wan Maria Nabillah Ghani
- Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | - Ishak Abdul Razak
- Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
- Faculty of Dentistry; MAHSA University; Selangor Malaysia
| | - Jennifer Geraldine Doss
- Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
- Department of Community Oral Health and Clinical Prevention, Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | - Yi-Hsin Yang
- School of Pharmacy; Kaohsiung Medical University; Kaohsiung City Taiwan
| | - Zainal Ariff Abdul Rahman
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | - Siti Mazlipah Ismail
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | - Mannil Thomas Abraham
- Oral Health Division, Ministry of Health; Federal Government Administrative Centre; Putrajaya Malaysia
| | | | - Keng Kiong Tay
- Oral Health Division, Ministry of Health; Federal Government Administrative Centre; Putrajaya Malaysia
| | - Rosnah Binti Zain
- Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
- Faculty of Dentistry; MAHSA University; Selangor Malaysia
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Cost-Effective Organization of an Institutional Human Cancer Biobank in a Clinical Setting: CRO-Biobank Experience Toward Harmonization. Int J Biol Markers 2018; 30:e243-51. [DOI: 10.5301/jbm.5000138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2014] [Indexed: 12/21/2022]
Abstract
This report describes the organization of the Biobank of the CRO Aviano National Cancer Institute, Aviano (CRO- Biobank), Italy, implemented as a structured facility dedicated to collecting human biological samples. It describes a particular disease-specific biobank and the integration of a research biobank in a clinical setting. The CRO-Biobank's mission is rooted in supporting and implementing cancer research, with its main focus on optimizing technical and quality processes, while also investigating ethical, legal and IT topics. The CRO-Biobank has implemented processes aimed at guaranteeing the safety of the providers, protecting patient privacy and ensuring both the traceability and quality of its samples. Our 8 years of experience allow us to offer insights and useful suggestions that may solve theoretical and practical issues that can arise when starting up new biobanks or developing existing biobanks further.
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Vincent-Chong VK, Salahshourifar I, Woo KM, Anwar A, Razali R, Gudimella R, Rahman ZAA, Ismail SM, Kallarakkal TG, Ramanathan A, Wan Mustafa WM, Abraham MT, Tay KK, Zain RB. Genome wide profiling in oral squamous cell carcinoma identifies a four genetic marker signature of prognostic significance. PLoS One 2017; 12:e0174865. [PMID: 28384287 PMCID: PMC5383235 DOI: 10.1371/journal.pone.0174865] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Accepted: 03/16/2017] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Cancers of the oral cavity are primarily oral squamous cell carcinomas (OSCCs). Many of the OSCCs present at late stages with an exceptionally poor prognosis. A probable limitation in management of patients with OSCC lies in the insufficient knowledge pertaining to the linkage between copy number alterations in OSCC and oral tumourigenesis thereby resulting in an inability to deliver targeted therapy. OBJECTIVES The current study aimed to identify copy number alterations (CNAs) in OSCC using array comparative genomic hybridization (array CGH) and to correlate the CNAs with clinico-pathologic parameters and clinical outcomes. MATERIALS AND METHODS Using array CGH, genome-wide profiling was performed on 75 OSCCs. Selected genes that were harboured in the frequently amplified and deleted regions were validated using quantitative polymerase chain reaction (qPCR). Thereafter, pathway and network functional analysis were carried out using Ingenuity Pathway Analysis (IPA) software. RESULTS Multiple chromosomal regions including 3q, 5p, 7p, 8q, 9p, 10p, 11q were frequently amplified, while 3p and 8p chromosomal regions were frequently deleted. These findings were in confirmation with our previous study using ultra-dense array CGH. In addition, amplification of 8q, 11q, 7p and 9p and deletion of 8p chromosomal regions showed a significant correlation with clinico-pathologic parameters such as the size of the tumour, metastatic lymph nodes and pathological staging. Co-amplification of 7p, 8q, 9p and 11q regions that harbored amplified genes namely CCND1, EGFR, TPM2 and LRP12 respectively, when combined, continues to be an independent prognostic factor in OSCC. CONCLUSION Amplification of 3q, 5p, 7p, 8q, 9p, 10p, 11q and deletion of 3p and 8p chromosomal regions were recurrent among OSCC patients. Co-alteration of 7p, 8q, 9p and 11q was found to be associated with clinico-pathologic parameters and poor survival. These regions contain genes that play critical roles in tumourigenesis pathways.
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Affiliation(s)
- Vui King Vincent-Chong
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Iman Salahshourifar
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Kar Mun Woo
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Arif Anwar
- Sengenics Sdn Bhd, High Impact Research (HIR) Building, University of Malaya, Kuala Lumpur, Malaysia
| | - Rozaimi Razali
- Sengenics Sdn Bhd, High Impact Research (HIR) Building, University of Malaya, Kuala Lumpur, Malaysia
| | - Ranganath Gudimella
- Sengenics Sdn Bhd, High Impact Research (HIR) Building, University of Malaya, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Thomas George Kallarakkal
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Anand Ramanathan
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Mannil Thomas Abraham
- Department of Oral and Maxillofacial Surgery, Hospital Tengku Ampuan Rahimah, Klang, Selangor Darul Ehsan, Malaysia
| | - Keng Kiong Tay
- Department of Oral Surgery, Hospital Umum Kuching, Kuching, Sarawak, Malaysia
| | - Rosnah Binti Zain
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- * E-mail:
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Knowledge of Future Dental Practitioners towards Oral Cancer: Exploratory Findings from a Public University in Malaysia. Int J Dent 2016; 2015:218065. [PMID: 26839548 PMCID: PMC4709628 DOI: 10.1155/2015/218065] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 12/01/2015] [Accepted: 12/10/2015] [Indexed: 01/07/2023] Open
Abstract
Objective. To assess knowledge and awareness of oral cancer in the early identification of risk factors among undergraduate dental students. Methods. A total of 162 undergraduate (third, fourth, and fifth year) dental students at International Islamic University, Malaysia, were approached to participate in the study, and those who agreed were administered. A 9-item pretested questionnaire contains questions on oral examination, oral cancer risk factors, and requests for further information. Descriptive statistics were conducted using chi-square testing. Results. The response rate of the study was 70.3% (114/162), with 26 (22.8%) males and 88 (77.2%) females. All undergraduate dental students were familiar with examining the oral mucosa of their patients and most were likely to advise patients about the risk factors for developing oral cancer (98.2%). Nearly one-third (32.4%) of students reported examining patients with oral lesions as early signs for oral cancer (P < 0.001) and nearly 70% agreed that they did not have sufficient knowledge regarding the prevention and detection of oral cancer (P < 0.001). In addition, more than 95.6% agreed that there is a need for additional information/teaching regarding oral cancer. Further, 61.3% and 14.1% identified tobacco smoking and drinking alcohol as major risk factors for developing oral cancer. Conclusion. This study demonstrated lack of awareness about risk factors among undergraduate dental students regarding oral cancer. Reinforcing awareness and enhancing the benefits of early detection on prevention of oral cancer should be done through training and/or educational intervention.
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Kerishnan JP, Gopinath SCB, Kai SB, Tang TH, Ng HLC, Rahman ZAA, Hashim U, Chen Y. Detection of Human Papillomavirus 16-Specific IgG and IgM Antibodies in Patient Sera: A Potential Indicator of Oral Squamous Cell Carcinoma Risk Factor. Int J Med Sci 2016; 13:424-31. [PMID: 27279791 PMCID: PMC4893556 DOI: 10.7150/ijms.14475] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 04/21/2016] [Indexed: 01/12/2023] Open
Abstract
The association between human papillomavirus type 16 (HPV16) and oral cancer has been widely reported. However, detecting anti-HPV antibodies in patient sera to determine risk for oral squamous cell carcinoma (OSCC) has not been well studied. In the present investigation, a total of 206 OSCC serum samples from the Malaysian Oral Cancer Database & Tissue Bank System, with 134 control serum samples, were analyzed by enzyme-linked immunosorbant assay (ELISA) to detect HPV16-specific IgG and IgM antibodies. In addition, nested PCR analysis using comprehensive consensus primers (PGMY09/11 and GP5(+)/6(+)) was used to confirm the presence of HPV. Furthermore, we have evaluated the association of various additional causal factors (e.g., smoking, alcohol consumption, and betel quid chewing) in HPV-infected OSCC patients. Statistical analysis of the Malaysian population indicated that OSCC was more prevalent in female Indian patients that practices betel quid chewing. ELISA revealed that HPV16 IgG, which demonstrates past exposure, could be detected in 197 (95.6%) OSCC patients and HPV16-specific IgM was found in a total of 42 (20.4%) OSCC patients, indicating current exposure. Taken together, our study suggest that HPV infection may play a significant role in OSCC (OR: 13.6; 95% CI: 3.89-47.51) and HPV16-specific IgG and IgM antibodies could represent a significant indicator of risk factors in OSCC patients.
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Affiliation(s)
- Jesinda P Kerishnan
- 1. Department of Oral Biology & Biomedical Sciences, Faculty of Dentistry, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Subash C B Gopinath
- 2. Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis (UniMAP), 01000, Kangar, Perlis, Malaysia; 3. School of Bioprocess Engineering, Universiti Malaysia Perlis (UniMAP), 02600 Arau, Perlis, Malaysia
| | - Sia Bik Kai
- 4. Faculty of Accountancy and Management, University Tungku Abdul Rahman, 43000, Kajang, Selangor, Malaysia
| | - Thean-Hock Tang
- 5. Advanced Medical & Dental Institute (AMDI), Universiti Sains Malaysia, 13200, Kepala Batas, Pulau Pinang, Malaysia
| | - Helen Lee-Ching Ng
- 6. Biomaterial Research Laboratory, Dental Research Management Centre, Faculty of Dentistry, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- 7. Department of Oro-Maxillofacial Surgical & Medical Sciences, Faculty of Dentistry Building, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Uda Hashim
- 2. Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis (UniMAP), 01000, Kangar, Perlis, Malaysia
| | - Yeng Chen
- 1. Department of Oral Biology & Biomedical Sciences, Faculty of Dentistry, University of Malaya, 50603, Kuala Lumpur, Malaysia; 8. Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, 50603, Kuala Lumpur, Malaysia
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12
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Birch K, Dove ES, Chiappetta M, Gürsoy UK. Biobanks in Oral Health: Promises and Implications of Post-Neoliberal Science and Innovation. OMICS : A JOURNAL OF INTEGRATIVE BIOLOGY 2016; 20:36-41. [PMID: 26584410 PMCID: PMC4739123 DOI: 10.1089/omi.2015.0123] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
While biobanks are established explicitly as scientific infrastructures, they are de facto political-economic ones too. Many biobanks, particularly population-based biobanks, are framed under the rubric of the bio-economy as national political-economic assets that benefit domestic business, while national populations are framed as a natural resource whose genomics, proteomics, and related biological material and national health data can be exploited. We outline how many biobanks epitomize this 'neoliberal' form of science and innovation in which research is driven by market priorities (e.g., profit, shareholder value) underpinned by state or government policies. As both scientific and political-economic infrastructures, biobanks end up entangled in an array of problems associated with market-driven science and innovation. These include: profit trumping other considerations; rentiership trumping entrepreneurship; and applied research trumping basic research. As a result, there has been a push behind new forms of 'post-neoliberal' science and innovation strategies based on principles of openness and collaboration, especially in relation to biobanks. The proliferation of biobanks and the putative transition in both scientific practice and political economy from neoliberalism to post-neoliberalism demands fresh social scientific analyses, particularly as biobanks become further established in fields such as oral health and personalized dentistry. To the best of our knowledge, this is the first analysis of biobanks with a view to what we can anticipate from biobanks and distributed post-genomics global science in the current era of oral health biomarkers.
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Affiliation(s)
- Kean Birch
- Department of Social Science, Faculty of Liberal Arts and Professional Studies, Faculty of Science, York University, Toronto, Ontario, Canada
| | - Edward S. Dove
- J. Kenyon Mason Institute for Medicine, Life Sciences and the Law, University of Edinburgh School of Law, Edinburgh, United Kingdom
| | - Margaret Chiappetta
- Department of Science and Technology Studies, Faculty of Science, York University, Toronto, Ontario, Canada
| | - Ulvi K. Gürsoy
- Department of Periodontology, Institute of Dentistry, University of Turku, Finland
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Hassona Y, Ahram M, Odeh N, Abu Gosh M, Scully C. Factors Influencing Dental Patient Participation in Biobanking and Biomedical Research. Med Princ Pract 2016; 25:323-8. [PMID: 27165114 PMCID: PMC5588431 DOI: 10.1159/000446479] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 04/27/2016] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES To study the willingness of dental patients to donate biospecimens for research purpose and to examine factors that may influence such a decision. MATERIALS AND METHODS A face-to-face interview was conducted using a pretested structured survey instrument on 408 adult dental patients attending a university hospital for dental care. Descriptive statistics were generated, and the x03C7;2 test was used to examine differences between groups. p values ≤0.5 were considered statistically significant. RESULTS Of the 408 participants, only 71 (17.4%) had heard of the terms biobanking/biospecimens, but 293 (71.9%) approved of the idea of using biospecimens for biomedical research, and 228 (55.9%) were willing to donate biospecimens and give personal information for research purposes. In participants who were unwilling to participate in biobanking, fear of information leakage was the most frequently reported reason, while in participants who were willing to donate biospecimens, the potential to provide more effective and less costly treatments was the most frequently reported reason. The preferences of the 228 participants who were willing to donate biospecimens were as follows: give a sample of removed oral tissues including extracted teeth (n = 105, 46.1%), donate a blood sample (n = 52, 23%), donate a sample of saliva (n = 43, 18.6%), and give a urine sample (n = 28, 12.3%). CONCLUSION Dental patients had a generally positive attitude towards biomedical research and biobanking. The most preferred types of biospecimens to donate in a dental setting were removed tissues, including extracted teeth and blood samples.
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Affiliation(s)
- Yazan Hassona
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, London, UK
- *Yazan Hassona, Departments of Oral and Maxillofacial Surgery, Faculty of Dentistry, The University of Jordan, Queen Rania Street, PO Box 11942, Amman (Jordan), E-Mail
| | - Mamoun Ahram
- Department of Physiology and Biochemistry, Faculty of Medicine, The University of Jordan, Amman, Jordan
| | - Noorah Odeh
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, London, UK
| | - Mais Abu Gosh
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, London, UK
| | - Crispian Scully
- World Health Organization Collaborating Centre on Oral Health, University College London, London, UK
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Abstract
Oral squamous cell carcinoma (OSCC) is an aggressive disease accounting for more than 260,000 cancer cases diagnosed and 128,000 deaths worldwide. A large majority of cancer deaths result from cancers that have metastasized beyond the primary tumor. The relationship between genetic changes and clinical outcome can reflect the biological events that promote cancer's aggressive behavior, and these can serve as molecular markers for improved patient management and survival. To this end, epithelial-mesenchymal transition (EMT) is a major process that promotes tumor invasion and metastasis, making EMT-related proteins attractive diagnostic biomarkers and therapeutic targets. In this study, we used immunohistochemistry to study the expression of a panel of transcription factors (TWIST1, SNAI1/2, ZEB1 and ZEB2) and other genes intimately related to EMT (CDH1 and LAMC2) at the invasive tumor front of OSCC tissues. The association between the expression of these proteins and clinico-pathological parameters were examined with Pearson Chi-square and correlation with survival was analyzed using Kaplan Meier analysis. Our results demonstrate that there was a significant differential expression of CDH1, LAMC2, SNAI1/2 and TWIST1 between OSCC and normal oral mucosa (NOM). Specifically, CDH1 loss was significantly associated with Broder's grading, while diffused LAMC2 was similarly associated with non-cohesive pattern of invasion. Notably, co-expression of TWIST1 and ZEB2 in OSCC was significantly associated with poorer overall survival, particularly in patients without detectable lymph node metastasis. This study demonstrates that EMT-related proteins are differentially expressed in OSCC and that the co-expression of TWIST1 and ZEB2 could be of clinical value in identifying patients with poor survival for appropriate patient management.
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15
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Auzair LBM, Vincent-Chong VK, Ghani WMN, Kallarakkal TG, Ramanathan A, Lee CE, Rahman ZAA, Ismail SM, Abraham MT, Zain RB. Caveolin 1 (Cav-1) and actin-related protein 2/3 complex, subunit 1B (ARPC1B) expressions as prognostic indicators for oral squamous cell carcinoma (OSCC). Eur Arch Otorhinolaryngol 2015; 273:1885-93. [PMID: 26138391 DOI: 10.1007/s00405-015-3703-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 06/25/2015] [Indexed: 12/22/2022]
Abstract
Caveolin-1 (Cav-1) and Actin-Related Protein 2/3 Complex, Subunit 1B (ARPC1B) have been implicated in various human cancers, yet its role in tumorigenesis remains controversial. Therefore, this study aims to determine the protein expression of these two genes in oral squamous cell carcinomas (OSCCs) and to evaluate the clinical and prognostic impact of these genes in OSCC. Protein expressions of these two genes were determined by immunohistochemistry technique. The association between Cav-1 and ARPC1B with clinico-pathological parameters was evaluated by Chi-square test (or Fisher exact test where appropriate). Correlation between the protein expressions of these 2 genes with survival was analyzed using Kaplan-Meier and Cox regression models. Cav-1 and ARPC1B were found to be significantly over-expressed in OSCC compared to normal oral mucosa (p = 0.002 and p = 0.033, respectively). Low level of ARPC1B protein expression showed a significant correlation with lymph node metastasis (LNM) (p = 0.010) and advanced tumor staging (p = 0.003). Kaplan-Meier survival analyses demonstrated that patients with over-expression of Cav-1 protein were associated with poor prognosis (p = 0.030). Adjusted multivariate Cox regression model revealed that over-expression of Cav-1 remained as an independent significant prognostic factor for OSCC (HRR = 2.700, 95 % CI 1.013-7.198, p = 0.047). This study demonstrated that low-expression of ARPC1B is significantly associated with LNM and advanced tumor staging whereas high expression of Cav-1 can be a prognostic indicator for poor prognosis in OSCC patients.
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Affiliation(s)
- Lukman Bin Md Auzair
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Vui King Vincent-Chong
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Wan Maria Nabillah Ghani
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Thomas George Kallarakkal
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Anand Ramanathan
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Chia Ee Lee
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Mannil Thomas Abraham
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral & Maxillofacial Surgery, Hospital Tengku Ampuan Rahimah, Ministry of Health, Klang, Selangor, Malaysia
| | - Rosnah Binti Zain
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia.
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
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16
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Salahshourifar I, Vincent-Chong VK, Chang HY, Ser HL, Ramanathan A, Kallarakkal TG, Rahman ZAA, Ismail SM, Prepageran N, Mustafa WMW, Abraham MT, Tay KK, Zain RB. Downregulation of CRNN gene and genomic instability at 1q21.3 in oral squamous cell carcinoma. Clin Oral Investig 2015; 19:2273-83. [DOI: 10.1007/s00784-015-1467-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Accepted: 03/23/2015] [Indexed: 12/14/2022]
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17
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Overexpression of MMP13 is associated with clinical outcomes and poor prognosis in oral squamous cell carcinoma. ScientificWorldJournal 2014; 2014:897523. [PMID: 25401159 PMCID: PMC4226172 DOI: 10.1155/2014/897523] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 08/22/2014] [Accepted: 09/08/2014] [Indexed: 11/17/2022] Open
Abstract
Matrix metalloproteinase 13 (MMP13) plays a central role in the MMP activation cascade that enables degradation of the extracellular matrix and basement membranes, and it is identified as a potential driver in oral carcinogenesis. Therefore, this study aims to determine the copy number, mRNA, and protein expression of MMP13 in oral squamous cell carcinoma (OSCC) and to associate these expressions with clinicopathological parameters. Copy number, mRNA, and protein expression analysis of MMP13 were determined using real-time quantitative PCR and immunohistochemistry methods in OSCC samples. The correlations between MMP13 expressions and clinicopathological parameters were evaluated, and the significance of MMP13 as a prognostic factor was determined. Despite discrepancies between gene amplification and mRNA and protein overexpression rates, OSCC cases showed high amplification of MMP13 and overexpression of MMP13 at both mRNA and protein levels. High level of MMP13 protein expression showed a significant correlation with lymph node metastasis (P = 0.011) and tumor staging (P = 0.002). Multivariate Cox regression model analysis revealed that high level of mRNA and protein expression of MMP13 were significantly associated with poor prognosis (P < 0.050). Taken together, these observations indicate that the MMP13 protein overexpression could be considered as a prognostic marker of OSCC.
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18
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Vincent-Chong VK, Karen-Ng LP, Abdul Rahman ZA, Yang YH, Anwar A, Zakaria Z, Jayaprasad Pradeep P, Kallarakkal TG, Kiong Tay K, Thomas Abraham M, Mazlipah Ismail S, Zain RB. Distinct pattern of chromosomal alterations and pathways in tongue and cheek squamous cell carcinoma. Head Neck 2014; 36:1268-1278. [PMID: 31615169 DOI: 10.1002/hed.23448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 05/10/2013] [Accepted: 08/01/2013] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The purpose of this study was to investigate the cause of behavioral difference between tongue and cheek squamous cell carcinomas (SCCs) by verifying the copy number alterations (CNAs). METHODS Array comparative genomic hybridization (aCGH) was used to profile unique deletions and amplifications that are involved with tongue and cheek SCC, respectively. This was followed by pathway analysis relating to CNA genes from both sites. RESULTS The most frequently amplified regions in tongue SCC were 4p16.3, 11q13.4, and 13q34; whereas the most frequently deleted region was 19p12. For cheek SCC, the most frequently amplified region was identified on chromosome 9p24.1-9p23; whereas the most common deleted region was located on chromosome 8p23.1. Further analysis revealed that the most significant unique pathway related to tongue and cheek SCCs was the cytoskeleton remodeling and immune response effect on the macrophage differentiation pathway. CONCLUSION This study has showed the different genetic profiles and biological pathways between tongue and cheek SCCs. © 2013 Wiley Periodicals, Inc. Head Neck 36: 1268-1278, 2014.
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Affiliation(s)
- Vui King Vincent-Chong
- Department of Oral Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Oral Cancer Research and Coordinating Center, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Lee Peng Karen-Ng
- Oral Cancer Research and Coordinating Center, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- Department of Oral Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Oral Cancer Research and Coordinating Center, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Yi-Hsin Yang
- Department of Dental Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung
| | - Arif Anwar
- Sengenics Sdn Bhd, Petaling Jaya, Selangor Darul Ehsan, Malaysia
| | - Zubaidah Zakaria
- Department of Haematology, Institute for Medical Research, Jalan Pahang, Kuala Lumpur, Malaysia
| | - Padmaja Jayaprasad Pradeep
- Oral Cancer Research and Coordinating Center, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Thomas George Kallarakkal
- Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Keng Kiong Tay
- Oral Health Division, Ministry of Health, Putrajaya, Malaysia
| | | | - Siti Mazlipah Ismail
- Department of Oral Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Rosnah Binti Zain
- Oral Cancer Research and Coordinating Center, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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19
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Vaithilingam RD, Safii SH, Baharuddin NA, Karen-Ng LP, Saub R, Ariffin F, Ramli H, Sharifuddin A, Hidayat MFH, Raman R, Chan YK, Rani NA, Rahim RA, Shahruddin N, Cheong SC, Bartold PM, Zain RB. Establishing and managing a periodontal biobank for research: the sharing of experience. Oral Dis 2014; 21:e62-9. [PMID: 24930489 DOI: 10.1111/odi.12267] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 05/12/2014] [Accepted: 06/08/2014] [Indexed: 12/30/2022]
Abstract
Periodontal bio-repositories, which allow banking of clinically validated human data and biological samples, provide an opportunity to derive biomarkers for periodontal diagnosis, prognosis and therapeutic activities which are expected to improve patient management. This article presents the establishing of the Malaysian Periodontal Database and Biobank System (MPDBS) which was initiated in 2011 with the aim to facilitate periodontal research. Partnerships were established with collaborating centres. Policies on specimen access, authorship and acknowledgement policies were agreed upon by all participating centres before the initiation of the periodontal biobank. Ethical approval for the collection of samples and data were obtained from institutional ethics review boards. A broad-based approach for informed consent was used, which covered areas related to quality of life impacts, genetics and molecular aspects of periodontal disease. Sample collection and processing was performed using a standardized protocol. Biobanking resources such as equipment and freezers were shared with the Malaysian Oral Cancer Database and Tissue Bank System (MOCDTBS). In the development of the MPDBS, challenges that were previously faced by the MOCDTBS were considered. Future challenges in terms of ethical and legal issues will be faced when international collaborations necessitate the transportation of specimens across borders.
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Affiliation(s)
- R D Vaithilingam
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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20
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Wong GR, Ha KO, Himratul-Aznita WH, Yang YH, Wan Mustafa WM, Yuen KM, Abraham MT, Tay KK, Karen-Ng LP, Cheong SC, Zain RB. Seropositivity of HPV 16 E6 and E7 and the risk of oral cancer. Oral Dis 2014; 20:762-7. [PMID: 24320099 DOI: 10.1111/odi.12218] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 11/03/2013] [Accepted: 11/18/2013] [Indexed: 12/29/2022]
Abstract
OBJECTIVES The objective of the study was to determine the prevalence of HPV seropositivity among patients with oral squamous cell carcinoma (OSCC) and healthy individuals and to correlate the association between HPV 16 seropositivity and risk of OSCC. MATERIALS AND METHODS HPV 16 E6 and E7 plasmids were constructed for the production of recombinant protein, which was used as the antigen in ELISA. HPV ELISA was performed on serum samples from 50 healthy individuals and 50 patients with OSCC. RESULTS Using the HPV ELISA, 30% (OR = 2.25, 95% CI = 0.85-5.93) and 18% (OR = 1.61, 95% CI = 0.53-4.92) of patients with oral cancer were found to be HPV 16 E6 and E7 seropositive, respectively. Significant association was found between HPV 16 seropositivity and increased risk of OSCC in men, but not in male subjects. A similar trend was observed in non-betel quid chewers. CONCLUSIONS Potential associations between HPV 16 E6/E7 seropositivity and oral cancer were revealed in men and non-betel quid chewer subjects, suggesting a possible etiological role of HPV 16 in subgroup of patients with OSCC in Malaysia.
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Affiliation(s)
- G R Wong
- Oral Cancer Research & Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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21
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Siow MY, Ng LPK, Vincent-Chong VK, Jamaludin M, Abraham MT, Abdul Rahman ZA, Kallarakkal TG, Yang YH, Cheong SC, Zain RB. Dysregulation of miR-31 and miR-375 expression is associated with clinical outcomes in oral carcinoma. Oral Dis 2013; 20:345-51. [PMID: 23651447 DOI: 10.1111/odi.12118] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 03/07/2013] [Accepted: 04/07/2013] [Indexed: 01/22/2023]
Abstract
OBJECTIVES To identify differentially expressed miRNA between oral squamous cell carcinoma (OSCC) and non-cancer (NC) and to associate these with clinico-pathological parameters. MATERIALS AND METHODS miRNA microarray profiling was utilized to obtain the expression profile of miRNAs in four OSCC and four NC samples. The expression of miR-31 and miR-375 was further validated in 26 OSCC and three NC samples using real-time-PCR. The association between miRNA expression and clinico-pathological parameters was tested by univariate and multivariate analyses. RESULTS Microarray profiling demonstrated that 15 and four miRNAs were up-regulated and down-regulated, respectively, in OSCC as compared with NC. miR-31 and miR-375 were validated as up- and down-regulated miRNAs, respectively. In univariate analyses, expression of miR-31 was significantly elevated in early stage, tumours with no metastatic nodes and those from the buccal mucosa. By contrast, low miR-375 expression was significantly associated with late stage disease, larger tumour size and the non-cohesive type of pattern of invasion in OSCC. The association between miR-31 expression with tumour staging and site and miR-375 with tumour staging remained significant in multivariate analyses. CONCLUSIONS This study has identified 19 miRNAs significantly associated with OSCC, and expressions of miR-31 and miR-375 were significantly related with clinico-pathological parameters suggesting they could be important in driving oral tumourigenesis.
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Affiliation(s)
- M Y Siow
- Faculty of Dentistry, Oral Cancer Research & Coordinating Center (OCRCC), University of Malaya, Kuala Lumpur, Malaysia; Department of Oral Pathology, Oral Medicine & Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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22
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Vincent-Chong VK, Anwar A, Karen-Ng LP, Cheong SC, Yang YH, Pradeep PJ, Rahman ZAA, Ismail SM, Zaini ZM, Prepageran N, Kallarakkal TG, Ramanathan A, Mohayadi NABM, Rosli NSBM, Mustafa WMW, Abraham MT, Tay KK, Zain RB. Genome wide analysis of chromosomal alterations in oral squamous cell carcinomas revealed over expression of MGAM and ADAM9. PLoS One 2013; 8:e54705. [PMID: 23405089 PMCID: PMC3566089 DOI: 10.1371/journal.pone.0054705] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Accepted: 12/14/2012] [Indexed: 12/26/2022] Open
Abstract
Despite the advances in diagnosis and treatment of oral squamous cell carcinoma (OSCC), mortality and morbidity rates have not improved over the past decade. A major drawback in diagnosis and treatment of OSCC is the lack of knowledge relating to how genetic instability in oral cancer genomes affects oral carcinogenesis. Hence, the key aim of this study was to identify copy number alterations (CNAs) that may be cancer associated in OSCC using high-resolution array comparative genomic hybridization (aCGH). To our knowledge this is the first study to use ultra-high density aCGH microarrays to profile a large number of OSCC genomes (n = 46). The most frequently amplified CNAs were located on chromosome 11q11(52%), 2p22.3(52%), 1q21.3-q22(54%), 6p21.32(59%), 20p13(61%), 7q34(52% and 72%),8p11.23-p11.22(80%), 8q11.1-q24.4(54%), 9q13-q34.3(54%), 11q23.3-q25(57%); 14q21.3-q31.1(54%); 14q31.3-q32.33(57%), 20p13-p12.3(54%) and 20q11.21-q13.33(52%). The most frequently deleted chromosome region was located on 3q26.1 (54%). In order to verify the CNAs from aCGH using quantitative polymerase chain reaction (qPCR), the three top most amplified regions and their associated genes, namely ADAM5P (8p11.23-p11.22), MGAM (7q34) and SIRPB1 (20p13.1), were selected in this study. The ADAM5P locus was found to be amplified in 39 samples and deleted in one; MGAM (24 amplifications and 3 deletions); and SIRPB1 (12 amplifications, others undetermined). On the basis of putative cancer-related annotations, two genes, namely ADAM metallopeptidase domain 9 (ADAM9) and maltase-glucoamylase alpha-glucosidase (MGAM), that mapped to CNA regions were selected for further evaluation of their mRNA expression using reverse transcriptase qPCR. The over-expression of MGAM was confirmed with a 6.6 fold increase in expression at the mRNA level whereas the fold change in ADAM9 demonstrated a 1.6 fold increase. This study has identified significant regions in the OSCC genome that were amplified and resulted in consequent over-expression of the MGAM and ADAM9 genes that may be utilized as biological markers for OSCC.
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Affiliation(s)
- Vui King Vincent-Chong
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Arif Anwar
- Sengenics Sdn Bhd, Petaling Jaya, Selangor Darul Ehsan, Malaysia
| | - Lee Peng Karen-Ng
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Sok Ching Cheong
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Oral Cancer Research Team, Cancer Research Initiatives Foundation, Selangor Darul Ehsan, Malaysia
| | - Yi-Hsin Yang
- Department of Dental Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Padmaja Jayaprasad Pradeep
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Zuraiza Mohamad Zaini
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Narayanan Prepageran
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Otorhinolaringology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Thomas George Kallarakkal
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Anand Ramanathan
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | | | | | | | | | - Keng Kiong Tay
- Oral Health Division, Ministry of Health, Putrajaya, Malaysia
| | - Rosnah Binti Zain
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- * E-mail:
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