Clinical trials optimizing investigator and self‐collection of buccal cells for RNA yield
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 crossov...
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Online Access: | https://doi.org/10.1002/lio2.516 |
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doaj-18cd0ea96d0143c78ff8b8479ee88aa92021-02-15T12:54:20ZengWileyLaryngoscope Investigative Otolaryngology2378-80382021-02-016111612110.1002/lio2.516Clinical trials optimizing investigator and self‐collection of buccal cells for RNA yieldJessica L. Geiger0Elizabeth D. Cedars1Yan Zang2Daniel P. Normolle3Hua Li4Jennifer R. Grandis5Sara Centuori6Daniel E. Johnson7Julie E. Bauman8Department of Hematology and Medical Oncology Taussig Cancer Institute, Cleveland Clinic Cleveland Ohio USADepartment of Otolaryngology—Head and Neck Surgery University of California San Francisco San Francisco California USADepartment of Medicine University of Pittsburgh School of Medicine Pittsburgh Pennsylvania USADepartment of Biostatistics University of Pittsburgh Graduate School of Public Health Pittsburgh Pennsylvania USADepartment of Otolaryngology—Head and Neck Surgery University of California San Francisco San Francisco California USADepartment of Otolaryngology—Head and Neck Surgery University of California San Francisco San Francisco California USADepartment of Medicine, Division of Hematology/Oncology University of Arizona College of Medicine Tucson Arizona USADepartment of Otolaryngology—Head and Neck Surgery University of California San Francisco San Francisco California USADepartment of Medicine, Division of Hematology/Oncology University of Arizona College of Medicine Tucson Arizona USAAbstract 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).https://doi.org/10.1002/lio2.516biomarkerbuccal cellcytobrushevidence‐based medicinemolecular biologyoral cavity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jessica L. Geiger Elizabeth D. Cedars Yan Zang Daniel P. Normolle Hua Li Jennifer R. Grandis Sara Centuori Daniel E. Johnson Julie E. Bauman |
spellingShingle |
Jessica L. Geiger Elizabeth D. Cedars Yan Zang Daniel P. Normolle Hua Li Jennifer R. Grandis Sara Centuori Daniel E. Johnson Julie E. Bauman Clinical trials optimizing investigator and self‐collection of buccal cells for RNA yield Laryngoscope Investigative Otolaryngology biomarker buccal cell cytobrush evidence‐based medicine molecular biology oral cavity |
author_facet |
Jessica L. Geiger Elizabeth D. Cedars Yan Zang Daniel P. Normolle Hua Li Jennifer R. Grandis Sara Centuori Daniel E. Johnson Julie E. Bauman |
author_sort |
Jessica L. Geiger |
title |
Clinical trials optimizing investigator and self‐collection of buccal cells for RNA yield |
title_short |
Clinical trials optimizing investigator and self‐collection of buccal cells for RNA yield |
title_full |
Clinical trials optimizing investigator and self‐collection of buccal cells for RNA yield |
title_fullStr |
Clinical trials optimizing investigator and self‐collection of buccal cells for RNA yield |
title_full_unstemmed |
Clinical trials optimizing investigator and self‐collection of buccal cells for RNA yield |
title_sort |
clinical trials optimizing investigator and self‐collection of buccal cells for rna yield |
publisher |
Wiley |
series |
Laryngoscope Investigative Otolaryngology |
issn |
2378-8038 |
publishDate |
2021-02-01 |
description |
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). |
topic |
biomarker buccal cell cytobrush evidence‐based medicine molecular biology oral cavity |
url |
https://doi.org/10.1002/lio2.516 |
work_keys_str_mv |
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