Rapid isolation of DNA from complex biological samples using a novel capture reagent--methidium-spermine-sepharose.
AUTOR(ES)
Harding, J D
RESUMO
We have synthesized and analyzed the functional properties of a novel DNA capture reagent containing a methidium moiety attached to a sepharose bead by a spermine linker. DNA present in a biological fluid or other complex sample binds to the reagent. The DNA-capture reagent complex is then separated from the sample by centrifugation and the DNA is released from the reagent by brief incubation in 0.1 to 0.5 N NaOH or KOH. Capture of DNA from complex samples is independent of the salt concentration of the sample, and occurs in the presence of high concentrations of EDTA, proteinase K and detergents. Many samples can be processed simultaneously. The following specific applications, in which denatured DNA is quantitated or characterized, are demonstrated: 1). Isolation of hepatitis B virus DNA from serum and quantitation by dot-blot hybridization, 2). Isolation and quantitation of DNA from urine, 3). Isolation of human genomic DNA from one microliter of blood or 100 HeLa cells followed by amplification of a specific gene sequence using the Polymerase Chain Reaction, 4). Isolation of single stranded phage M13 sequencing templates from bacterial cultures. These investigations suggest that a capture reagent containing an intercalating moiety bound to a solid support may be useful for many applications in molecular biology and molecular diagnostics.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=318425Documentos Relacionados
- DNA isolation from small tissue samples using salt and spermine.
- Binding of ethidium and bis(methidium)spermine to Z DNA by intercalation.
- Immunomagnetic Capture PCR for Rapid Concentration and Detection of Hepatitis A Virus from Environmental Samples
- A rapid method of DNA isolation using laundry detergent.
- Glutathione S-transferase fusion proteins as an affinity reagent for rapid isolation of specific sequence directly from genomic DNA.