Rapid method for the isolation of mammalian sperm DNA

The unique DNA packaging of spermatozoa renders them resistant to DNA isolation techniques used for somatic cells, requiring alternative methods that are slow and labor intensive. Here we present a rapid method for isolating high-quality sperm DNA. Isolated human sperm cells were homogenized with 0....

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Veröffentlicht in:BioTechniques. - 1993. - 58(2015), 6 vom: 13. Juni, Seite 293-300
1. Verfasser: Wu, Haotian (VerfasserIn)
Weitere Verfasser: de Gannes, Matthew K, Luchetti, Gianna, Pilsner, J Richard
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:BioTechniques
Schlagworte:Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't DNA isolation DNA purification epigenetics genetics methods nucleic acids sperm mehr... spermatozoa Phosphines Reducing Agents tris(2-carboxyethyl)phosphine H49AAM893K Silicon Dioxide 7631-86-9 DNA 9007-49-2
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520 |a The unique DNA packaging of spermatozoa renders them resistant to DNA isolation techniques used for somatic cells, requiring alternative methods that are slow and labor intensive. Here we present a rapid method for isolating high-quality sperm DNA. Isolated human sperm cells were homogenized with 0.2 mm steel beads for 5 min at room temperature in the presence of guanidine thiocyanate lysis buffer supplemented with 50 mM tris(2-carboxyethyl)phosphine (TCEP). Our method yielded >90% high-quality DNA using 3 different commercially available silica-based spin columns. DNA yields did not differ between immediate isolation (2.84 ± 0.04 pg/cell) and isolation after 2 weeks of homogenate storage at room temperature (2.91 ± 0.13 pg/cell). DNA methylation analyses revealed similar methylation levels at both time points for three imprinted loci. Our protocol has many advantages: it is conducted at room temperature; lengthy proteinase K (ProK) digestions are eliminated; the reducing agent, TCEP, is odorless and stable at room temperature; nucleic acids are stabilized, allowing storage of homogenate; and it is adaptable for other mammalian species. Taken together, the benefits of our improved method have important implications for settings where sample processing constraints exist 
650 4 |a Journal Article 
650 4 |a Research Support, N.I.H., Extramural 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a DNA isolation 
650 4 |a DNA purification 
650 4 |a epigenetics 
650 4 |a genetics 
650 4 |a methods 
650 4 |a nucleic acids 
650 4 |a sperm 
650 4 |a spermatozoa 
650 7 |a Phosphines  |2 NLM 
650 7 |a Reducing Agents  |2 NLM 
650 7 |a tris(2-carboxyethyl)phosphine  |2 NLM 
650 7 |a H49AAM893K  |2 NLM 
650 7 |a Silicon Dioxide  |2 NLM 
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650 7 |a DNA  |2 NLM 
650 7 |a 9007-49-2  |2 NLM 
700 1 |a de Gannes, Matthew K  |e verfasserin  |4 aut 
700 1 |a Luchetti, Gianna  |e verfasserin  |4 aut 
700 1 |a Pilsner, J Richard  |e verfasserin  |4 aut 
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