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Hose L, Schürmann M, Mennebröcker I, Kim R, Busche T, Goon P, Sudhoff H. Characterization of non-invasive oropharyngeal samples and nucleic acid isolation for molecular diagnostics. Sci Rep 2024; 14:4061. [PMID: 38374370 PMCID: PMC10876689 DOI: 10.1038/s41598-024-54179-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/09/2024] [Indexed: 02/21/2024] Open
Abstract
Molecular diagnostics is an increasingly important clinical tool, especially in routine sampling. We evaluated two non-invasive methods (oral swabs and mouthwashes) for sampling nucleic acids from the oral/pharyngeal area. We created a workflow from sample collection (n = 59) to RT-qPCR based analysis. The samples were further characterized in terms of their cellular composition as well as the purity, degradation and microbial content of the derived DNA/RNA. We determined the optimal housekeeping genes applicable for these types of samples. The cellular composition indicated that mouthwashes contained more immune cells and bacteria. Even though the protocol was not specifically optimized to extract bacterial RNA it was possible to derive microbial RNA, from both sampling methods. Optimizing the protocol allowed us to generate stable quantities of DNA/RNA. DNA/RNA purity parameters were not significantly different between the two sampling methods. Even though integrity analysis demonstrated a high level of degradation of RNA, corresponding parameters confirmed their sequencing potential. RT-qPCR analysis determined TATA-Box Binding Protein as the most favorable housekeeping gene. In summary, we have developed a robust method suitable for multiple downstream diagnostic techniques. This protocol can be used as a foundation for further research endeavors focusing on developing molecular diagnostics for the oropharyngeal cavity.
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Affiliation(s)
- Leonie Hose
- Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Teutoburger Str. 50, 33604, Bielefeld, Germany.
| | - Matthias Schürmann
- Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Teutoburger Str. 50, 33604, Bielefeld, Germany
| | - Inga Mennebröcker
- Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Teutoburger Str. 50, 33604, Bielefeld, Germany
| | - Rayoung Kim
- Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Teutoburger Str. 50, 33604, Bielefeld, Germany
| | - Tobias Busche
- Center for Biotechnology (CeBiTec), University Hospital OWL of Bielefeld University, Bielefeld, Germany
| | - Peter Goon
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore, Singapore
| | - Holger Sudhoff
- Department of Otolaryngology, Head and Neck Surgery, Campus Klinikum Bielefeld Mitte, University Hospital OWL of Bielefeld University, Teutoburger Str. 50, 33604, Bielefeld, Germany
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Verscheure E, Stierum R, Schlünssen V, Lund Würtz AM, Vanneste D, Kogevinas M, Harding BN, Broberg K, Zienolddiny-Narui S, Erdem JS, Das MK, Makris KC, Konstantinou C, Andrianou X, Dekkers S, Morris L, Pronk A, Godderis L, Ghosh M. Characterization of the internal working-life exposome using minimally and non-invasive sampling methods - a narrative review. ENVIRONMENTAL RESEARCH 2023; 238:117001. [PMID: 37683788 DOI: 10.1016/j.envres.2023.117001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023]
Abstract
During recent years, we are moving away from the 'one exposure, one disease'-approach in occupational settings and towards a more comprehensive approach, taking into account the totality of exposures during a life course by using an exposome approach. Taking an exposome approach however is accompanied by many challenges, one of which, for example, relates to the collection of biological samples. Methods used for sample collection in occupational exposome studies should ideally be minimally invasive, while at the same time sensitive, and enable meaningful repeated sampling in a large population and over a longer time period. This might be hampered in specific situations e.g., people working in remote areas, during pandemics or with flexible work hours. In these situations, using self-sampling techniques might offer a solution. Therefore, our aim was to identify existing self-sampling techniques and to evaluate the applicability of these techniques in an occupational exposome context by conducting a literature review. We here present an overview of current self-sampling methodologies used to characterize the internal exposome. In addition, the use of different biological matrices was evaluated and subdivided based on their level of invasiveness and applicability in an occupational exposome context. In conclusion, this review and the overview of self-sampling techniques presented herein can serve as a guide in the design of future (occupational) exposome studies while circumventing sample collection challenges associated with exposome studies.
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Affiliation(s)
- Eline Verscheure
- Department of Public Health and Primary Care, Centre for Environment and Health, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Rob Stierum
- Netherlands Organisation for Applied Scientific Research TNO, Risk Analysis for Products in Development, Utrecht, the Netherlands
| | - Vivi Schlünssen
- Department of Public Health, Research unit for Environment, Occupation and Health, Danish Ramazzini Centre, Aarhus University, Aarhus, Denmark
| | - Anne Mette Lund Würtz
- Department of Public Health, Research unit for Environment, Occupation and Health, Danish Ramazzini Centre, Aarhus University, Aarhus, Denmark
| | - Dorian Vanneste
- Department of Public Health and Primary Care, Centre for Environment and Health, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Manolis Kogevinas
- Environment and Health over the Lifecourse Program, ISGlobal, Barcelona, Spain
| | - Barbara N Harding
- Environment and Health over the Lifecourse Program, ISGlobal, Barcelona, Spain
| | - Karin Broberg
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | | | | | - Mrinal K Das
- National Institute of Occupational Health, Oslo, Norway
| | - Konstantinos C Makris
- Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus
| | - Corina Konstantinou
- Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus
| | - Xanthi Andrianou
- Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus
| | - Susan Dekkers
- Netherlands Organisation for Applied Scientific Research TNO, Risk Analysis for Products in Development, Utrecht, the Netherlands
| | | | - Anjoeka Pronk
- Netherlands Organisation for Applied Scientific Research TNO, Risk Analysis for Products in Development, Utrecht, the Netherlands
| | - Lode Godderis
- Department of Public Health and Primary Care, Centre for Environment and Health, Katholieke Universiteit Leuven, Leuven, Belgium; Idewe, External Service for Prevention and Protection at work, Heverlee, Belgium.
| | - Manosij Ghosh
- Department of Public Health and Primary Care, Centre for Environment and Health, Katholieke Universiteit Leuven, Leuven, Belgium.
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Bauman JE, Hsu CH, Centuori S, Guillen-Rodriguez J, Garland LL, Ho E, Padi M, Bageerathan V, Bengtson L, Wojtowicz M, Szabo E, Chow HHS. Randomized Crossover Trial Evaluating Detoxification of Tobacco Carcinogens by Broccoli Seed and Sprout Extract in Current Smokers. Cancers (Basel) 2022; 14:cancers14092129. [PMID: 35565256 PMCID: PMC9105060 DOI: 10.3390/cancers14092129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/13/2022] [Accepted: 04/15/2022] [Indexed: 01/25/2023] Open
Abstract
Consumption of cruciferous vegetables, rich in the isothiocyanate glucoraphanin, is associated with reduced risk of tobacco-related cancers. Sulforaphane, released by hydrolysis of glucoraphanin, potently induces cytoprotective phase II enzymes. Sulforaphane decreased the incidence of oral cancer in the 4NQO carcinogenesis model. In residents of Qidong, China, broccoli seed and sprout extracts (BSSE) increased detoxification of air pollutants benzene and acrolein, also found in tobacco smoke. This randomized, crossover trial evaluated detoxification of tobacco carcinogens by the BSSE Avmacol® in otherwise healthy smokers. Participants were treated for 2 weeks with both low and higher-dose BSSE (148 µmol vs. 296 µmol of glucoraphanin daily), separated by a 2-week washout, with randomization to low-high vs. high-low sequence. The primary endpoint was detoxification of benzene, measured by urinary excretion of its mercapturic acid, SPMA. Secondary endpoints included bioavailability, detoxification of acrolein and crotonaldehyde, modulation by GST genotype, and toxicity. Forty-nine participants enrolled, including 26 (53%) females with median use of 20 cigarettes/day. Low and higher-dose BSSE showed a mean bioavailability of 11% and 10%, respectively. Higher-dose BSSE significantly upregulated urinary excretion of the mercapturic acids of benzene (p = 0.04), acrolein (p < 0.01), and crotonaldehyde (p = 0.02), independent of GST genotype. Retention and compliance were high resulting in early study completion. In conclusion, BSSE significantly upregulated detoxification of the tobacco carcinogens benzene, acrolein, and crotonaldehyde in current tobacco smokers.
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Affiliation(s)
- Julie E. Bauman
- Department of Medicine, Division of Hematology/Oncology, University of Arizona (UA) and UA Cancer Center, Tucson, AZ 85724, USA; (S.C.); (L.L.G.); (H.-H.S.C.)
- Department of Medicine, Division of Hematology/Oncology, George Washington (GW) University and GW Cancer Center, Washington, DC 20037, USA
- Correspondence:
| | - Chiu-Hsieh Hsu
- Department of Epidemiology and Biostatistics, UA and UA Cancer Center, Tucson, AZ 85724, USA;
| | - Sara Centuori
- Department of Medicine, Division of Hematology/Oncology, University of Arizona (UA) and UA Cancer Center, Tucson, AZ 85724, USA; (S.C.); (L.L.G.); (H.-H.S.C.)
| | - Jose Guillen-Rodriguez
- Biostatistics and Bioinformatics Shared Resource, UA Cancer Center, Tucson, AZ 85724, USA; (J.G.-R.); (M.P.); (V.B.)
| | - Linda L. Garland
- Department of Medicine, Division of Hematology/Oncology, University of Arizona (UA) and UA Cancer Center, Tucson, AZ 85724, USA; (S.C.); (L.L.G.); (H.-H.S.C.)
| | - Emily Ho
- Linus Pauling Institute, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR 97331, USA;
| | - Megha Padi
- Biostatistics and Bioinformatics Shared Resource, UA Cancer Center, Tucson, AZ 85724, USA; (J.G.-R.); (M.P.); (V.B.)
- Department of Molecular and Cellular Biology, UA, Tucson, AZ 85724, USA
| | - Vignesh Bageerathan
- Biostatistics and Bioinformatics Shared Resource, UA Cancer Center, Tucson, AZ 85724, USA; (J.G.-R.); (M.P.); (V.B.)
| | - Lisa Bengtson
- Division of Cancer Prevention, National Cancer Institute, Bethesda, MD 20892, USA; (L.B.); (M.W.); (E.S.)
| | - Malgorzata Wojtowicz
- Division of Cancer Prevention, National Cancer Institute, Bethesda, MD 20892, USA; (L.B.); (M.W.); (E.S.)
| | - Eva Szabo
- Division of Cancer Prevention, National Cancer Institute, Bethesda, MD 20892, USA; (L.B.); (M.W.); (E.S.)
| | - H.-H. Sherry Chow
- Department of Medicine, Division of Hematology/Oncology, University of Arizona (UA) and UA Cancer Center, Tucson, AZ 85724, USA; (S.C.); (L.L.G.); (H.-H.S.C.)
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Geiger JL, Cedars ED, Zang Y, Normolle DP, Li H, Grandis JR, Centuori S, Johnson DE, Bauman JE. Clinical trials optimizing investigator and self-collection of buccal cells for RNA yield. Laryngoscope Investig Otolaryngol 2021; 6:116-121. [PMID: 33614939 PMCID: PMC7883625 DOI: 10.1002/lio2.516] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 11/10/2020] [Accepted: 12/23/2020] [Indexed: 11/07/2022] Open
Abstract
Objective Buccal cells are an ideal surrogate tissue for studying biologic effects of carcinogens or drugs, however inherent fragility and salivary RNAses limit RNA yield. We conducted healthy volunteer trials to optimize collection conditions. Methods We conducted: (a) a single‐arm crossover study evaluating four test conditions on RNA yield by buccal cytobrush; (b) a single‐arm prospective study evaluating RNA yield by investigator vs self‐collection. Results Antecedent toothbrushing, time of day, and number of cytobrush strokes did not significantly impact RNA yield. RNA yield was doubled by using 2 vs 1 cytobrush per buccal surface (P = .0054). Self‐collection of buccal cells for RNA was feasible; 36 of 50 (72%) samples passed quality control. Conclusion RNA yield was doubled by using two cytobrushes per buccal surface. Healthy volunteers can self‐collect sufficient buccal RNA for gene expression studies. Techniques from these pragmatic trials could enhance availability of a limited tissue for serial biomarker measurements. Level of Evidence 1b—Prognosis Study (Individual prospective cohort study).
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Affiliation(s)
- Jessica L Geiger
- Department of Hematology and Medical Oncology Taussig Cancer Institute, Cleveland Clinic Cleveland Ohio USA
| | - Elizabeth D Cedars
- Department of Otolaryngology-Head and Neck Surgery University of California San Francisco San Francisco California USA
| | - Yan Zang
- Department of Medicine University of Pittsburgh School of Medicine Pittsburgh Pennsylvania USA
| | - Daniel P Normolle
- Department of Biostatistics University of Pittsburgh Graduate School of Public Health Pittsburgh Pennsylvania USA
| | - Hua Li
- Department of Otolaryngology-Head and Neck Surgery University of California San Francisco San Francisco California USA
| | - Jennifer R Grandis
- Department of Otolaryngology-Head and Neck Surgery University of California San Francisco San Francisco California USA
| | - Sara Centuori
- Department of Medicine, Division of Hematology/Oncology University of Arizona College of Medicine Tucson Arizona USA
| | - Daniel E Johnson
- Department of Otolaryngology-Head and Neck Surgery University of California San Francisco San Francisco California USA
| | - Julie E Bauman
- Department of Medicine, Division of Hematology/Oncology University of Arizona College of Medicine Tucson Arizona USA
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