Abstract
Insertional mutagenesis is a productive strategy for the exploration of genetic regulation of important biological and pathological processes, such as tumorigenesis. Successful implementation of this strategy depends heavily on an efficient approach to the identification of insertion sites present in the host genome. Here, we have introduced an easy and efficient protocol, called Adenosine-ended Primer Extension Polymerase Chain Reaction (APE-PCR), which represents several advantages, including the Addition technique we previously developed, primer extension approach coupled with biotin-streptavidin based purification, introduction of nano-scale magnetic particles, and digestion of DNA with a combination of enzymes. We have demonstrated that APE-PCR is able to amplify more and larger specific proviral insertion site (PIS)-derived fragments, with a lower non-specific background produced, fewer steps and less DNA samples required, flexibility in choice of restriction enzymes applied, at a lower cost. Replacement of regular magnetic beads with nano-scale ones in the protocol can further increase its power. Moreover, even with small amount of sample DNA, PISs can be recovered and analyzed. Thus, based on the results provided from this study, we believe that APE-PCR represents an efficient method in mapping of PISs and likely, the insertion sites of other types of DNA elements as well.
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Abbreviations
- APE-PCR:
-
adenosine-ended primer extension polymerase chain reaction
- LAM-PCR:
-
linear amplificationmediated polymerase chain reaction
- PCR:
-
polymerase chain reaction
- PIS:
-
proviral insertion site
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Xu, Z., Li, Y., Mao, Z.J. et al. The development of APE-PCR for the cloning of genomic insertion sites of DNA elements. Biologia 68, 766–772 (2013). https://doi.org/10.2478/s11756-013-0214-2
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DOI: https://doi.org/10.2478/s11756-013-0214-2