Title |
Direct Detection and Sequencing of Damaged DNA Bases
|
---|---|
Published in |
Genome Integrity, December 2011
|
DOI | 10.1186/2041-9414-2-10 |
Pubmed ID | |
Authors |
Tyson A Clark, Kristi E Spittle, Stephen W Turner, Jonas Korlach |
Abstract |
Products of various forms of DNA damage have been implicated in a variety of important biological processes, such as aging, neurodegenerative diseases, and cancer. Therefore, there exists great interest to develop methods for interrogating damaged DNA in the context of sequencing. Here, we demonstrate that single-molecule, real-time (SMRT®) DNA sequencing can directly detect damaged DNA bases in the DNA template - as a by-product of the sequencing method - through an analysis of the DNA polymerase kinetics that are altered by the presence of a modified base. We demonstrate the sequencing of several DNA templates containing products of DNA damage, including 8-oxoguanine, 8-oxoadenine, O6-methylguanine, 1-methyladenine, O4-methylthymine, 5-hydroxycytosine, 5-hydroxyuracil, 5-hydroxymethyluracil, or thymine dimers, and show that these base modifications can be readily detected with single-modification resolution and DNA strand specificity. We characterize the distinct kinetic signatures generated by these DNA base modifications. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 2 | 33% |
United Kingdom | 2 | 33% |
Cameroon | 1 | 17% |
Unknown | 1 | 17% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Scientists | 4 | 67% |
Practitioners (doctors, other healthcare professionals) | 1 | 17% |
Members of the public | 1 | 17% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 7 | 4% |
Netherlands | 1 | <1% |
India | 1 | <1% |
United Kingdom | 1 | <1% |
Argentina | 1 | <1% |
France | 1 | <1% |
China | 1 | <1% |
Belgium | 1 | <1% |
Japan | 1 | <1% |
Other | 1 | <1% |
Unknown | 158 | 91% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 47 | 27% |
Student > Ph. D. Student | 35 | 20% |
Student > Master | 17 | 10% |
Student > Doctoral Student | 12 | 7% |
Student > Bachelor | 10 | 6% |
Other | 33 | 19% |
Unknown | 20 | 11% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 78 | 45% |
Biochemistry, Genetics and Molecular Biology | 48 | 28% |
Chemistry | 6 | 3% |
Computer Science | 6 | 3% |
Engineering | 5 | 3% |
Other | 12 | 7% |
Unknown | 19 | 11% |