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Multicolor super-resolution DNA imaging for genetic analysis.

ABSTRACT: Many types of cancer and neurodegenerative diseases are caused by abnormalities and variations in the genome. We have designed a high-resolution imaging technique with high throughput and low cost for determining structural variations of genes related to genetic diseases. We initially mapped all seven nicking sites of Nb.BbvCI endonuclease enzyme on lambda DNA. Then we resolved densely labeled patterns of 107 nicking sites on human BAC DNA that is digested by Nb.BsmI and Nb.BbvCI endonuclease enzymes. This high density resulted in several dyes being closer together than the diffraction limit. Overall, detailed DNA nicking sites mapping with 100 bp resolution was achieved, which has the potential to reveal information about genetic variance and to facilitate medical diagnosis of several genetic diseases.

SUBMITTER: Baday M

PROVIDER: S-EPMC3880789 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature

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Multicolor super-resolution DNA imaging for genetic analysis.

Baday Murat M Cravens Aaron A Hastie Alex A Kim Hyeongjun H Kudeki Deren E DE Kwok Pui-Yan PY Xiao Ming M Selvin Paul R PR

Nano letters 20120618 7

Many types of cancer and neurodegenerative diseases are caused by abnormalities and variations in the genome. We have designed a high-resolution imaging technique with high throughput and low cost for determining structural variations of genes related to genetic diseases. We initially mapped all seven nicking sites of Nb.BbvCI endonuclease enzyme on lambda DNA. Then we resolved densely labeled patterns of 107 nicking sites on human BAC DNA that is digested by Nb.BsmI and Nb.BbvCI endonuclease en ...[more]

PMID: 22698062

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