Methods for Extracting DNA and RNA from Fixed Tissues
Author Information
Author(s): Gilbert M. Thomas P., Haselkorn Tamara, Bunce Michael, Sanchez Juan J., Lucas Sebastian B., Jewell Laurence D., Marck Eric Van, Worobey Michael
Primary Institution: University of Arizona
Hypothesis
Which methods are most effective for recovering nucleic acids from fixed, paraffin-embedded tissues?
Conclusion
The study recommends careful selection of extraction methods for optimal nucleic acid recovery, as some commonly used techniques may be ineffective or even detrimental.
Supporting Evidence
- Many commonly used methods for nucleic acid extraction were found to be ineffective.
- Pre-extraction incubation at high temperatures can improve nucleic acid quality.
- Silica-based extraction methods yielded better results than organic methods.
- Longer digestion times significantly increased PCR amplifiable yields.
- Hot-alkali treatments improved nucleic acid recovery but at the cost of total yield.
Takeaway
This study looks at different ways to get DNA and RNA from old tissue samples, finding that some methods work better than others.
Methodology
The study compared various nucleic acid extraction methods on a panel of fixed specimens using multiple assays to assess quality.
Limitations
The findings are limited by sample size and the nested approach adopted.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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