Abstract:
:Damage to the genome is implicated in the progression of cancer and stress-induced diseases. DNA lesions exist in low levels, and cannot be amplified by standard PCR because they are frequently strong blocks to polymerases. Here, we describe a method for PCR amplification of lesion-containing DNA in which the site and identity could be marked, copied and sequenced. Critical for this method is installation of either the dNaM or d5SICS nucleotides at the lesion site after processing via the base excision repair process. These marker nucleotides constitute an unnatural base pair, allowing large quantities of marked DNA to be made by PCR amplification. Sanger sequencing confirms the potential for this method to locate lesions by marking, amplifying and sequencing a lesion in the KRAS gene. Detection using the α-hemolysin nanopore is also developed to analyse the markers in individual DNA strands with the potential to identify multiple lesions per strand.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Riedl J,Ding Y,Fleming AM,Burrows CJdoi
10.1038/ncomms9807subject
Has Abstractpub_date
2015-11-06 00:00:00pages
8807issn
2041-1723pii
ncomms9807journal_volume
6pub_type
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