Quality Assurance After a Natural Disaster: Lessons from Hurricane Sandy

被引:4
|
作者
Dickerson, Collin [1 ]
Hsu, Yanshen [1 ]
Mendoza, Sandra [1 ]
Osman, Iman [2 ]
Ogilvie, Jennifer [3 ]
Patel, Kepal [3 ]
Moreira, Andre L. [4 ]
机构
[1] New York Univ Langone Hlth, Ctr Biospecimen Res & Dev, 550 1st Ave,MSB 603, New York, NY 10016 USA
[2] New York Univ Langone Hlth, Dept Med, Ctr Biospecimen Res & Dev, New York, NY USA
[3] New York Univ Langone Hlth, Dept Surg, New York, NY USA
[4] New York Univ Langone Hlth, Dept Pathol, Ctr Biospecimen Res & Dev, New York, NY USA
关键词
tissue banking; quality assurance; DNA extraction; RNA extraction; RNA INTEGRITY; LUNG-CANCER; CYCLES; IMPACT; EXPRESSION; ISCHEMIA; DNA;
D O I
10.1089/bio.2017.0104
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Biospecimen quality can vary depending on many pre- and post-collection variables. In this study, we consider a natural disaster as a post-collection variable that may have compromised the quality of frozen tissue specimens. To investigate this possible link, we compared the quality of nucleic acids, the level of antigenicity, and the preservation of histology from frozen specimens collected before and after the power outage caused by Hurricane Sandy. To analyze nucleic acid quality, we extracted both DNA and RNA and performed capillary electrophoresis to compare the quality and concentrations of the nucleic acids. To compare antigenicity, frozen sections were cut and immunostained for thyroid transcription factor 1 (TTF-1), a nuclear transcription protein commonly used as a diagnostic biomarker for multiple cancer types, including thyroid and lung cancers. Positive expression of TTF-1, as noted by homogenous nuclear staining, would demonstrate that the TTF-1 proteins could still bind antibodies and, therefore, that these proteins were not significantly degraded. Furthermore, representative frozen sections stained with hematoxylin and eosin were also assessed qualitatively by a trained pathologist to examine any possible histologic aberrations. Due to the similar quality of the tissue samples collected before and after the storm, Hurricane Sandy had no discernable effect on the quality of frozen specimens, and these specimens exposed to the natural disaster are still valuable research tools.
引用
收藏
页码:92 / 96
页数:5
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