A Modified Protocol for Bisulfite Genomic Sequencing of Difficult Samples
2009

Improved Bisulfite Genomic Sequencing Method

Sample size: 176 publication 10 minutes Evidence: high

Author Information

Author(s): Pappas Jane J, Toulouse André, Bradley WEC

Primary Institution: Centre de Recherche du C.H.U.M., Université de Montréal

Hypothesis

Can a modified protocol using multiple restriction enzyme digestion improve the efficiency of bisulfite genomic sequencing?

Conclusion

The modified protocol significantly increased the rate of informative sequencing results from 10% to 91%.

Supporting Evidence

  • The modified protocol increased informative sequencings ninefold.
  • 91% of samples sequenced using the modified protocol achieved 99% conversion of non-CpG-cytosines.
  • Only 10% of samples sequenced using the original protocol achieved the same conversion rate.

Takeaway

Scientists found a better way to read DNA by using special enzymes that help them see more information about how genes are turned on or off.

Methodology

The study used a modified bisulfite genomic sequencing protocol with a multiple restriction enzyme digestion step to improve the analysis of DNA methylation.

Potential Biases

Potential bias in the selection of restriction enzymes could affect results.

Limitations

The study primarily focused on a specific gene and may not be generalizable to all genes.

Participant Demographics

Twenty-one different cell lines were used in the study.

Statistical Information

P-Value

p<0.05

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1007/s12575-009-9010-3

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