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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Application of magnetic particles for isolation and purification of DNA
 Němeček, Milan ; Španová, Alena (referee) ; Rittich, Bohuslav (advisor)
With a development of molecular biology methods it is an increasing interest in new procedures of DNA isolation of high quality. DNA isolation is performed on crude cell lysates by many techniques e.g. phenol extraction, salting out or adsorption on solid phase. Classical DNA isolation, such as phenol extraction is quite complicated and time consuming. New alternative methods of DNA isolation was development using reverse immobilizing DNA to a solid phase. Widespread is the use of the magnetic particles as carriers, which allow the isolation of DNA in high quality directly from crude cells lysates of complex samples. The current method of DNA adsorption onto the surface of magnetic particles does not provided sufficiently pure DNA for analysis of some comlex samples (e.g. food). Some inhibitors of the polymerase chain reaction (PCR) are apparently adsorbed onto the tube wall and the next step of DNA elution leads to their release into the solution and cpnsequent negative effect on quality of DNA (e.g. decreasing of PCR amplification). The principle of the developed procedure is design a device, which utilizes transfer of magnetic particles by paramagnetic newddle from one to another Eppendorf tube, in which further processing of the sample extends. Transfer of magnetic particles with DNA using needle prevents transmission of contaminating impurities. The proposed device allows to realize above-mentioned procedure. The functionality of the device being tested in the isolation of plasmid pUC19 DNA from crude lysates of E. Coli JM 109 (pUC19).
Detailed record
Application of magnetic particles for isolation and purification of DNA
 Němeček, Milan ; Španová, Alena (referee) ; Rittich, Bohuslav (advisor)
With a development of molecular biology methods it is an increasing interest in new procedures of DNA isolation of high quality. DNA isolation is performed on crude cell lysates by many techniques e.g. phenol extraction, salting out or adsorption on solid phase. Classical DNA isolation, such as phenol extraction is quite complicated and time consuming. New alternative methods of DNA isolation was development using reverse immobilizing DNA to a solid phase. Widespread is the use of the magnetic particles as carriers, which allow the isolation of DNA in high quality directly from crude cells lysates of complex samples. The current method of DNA adsorption onto the surface of magnetic particles does not provided sufficiently pure DNA for analysis of some comlex samples (e.g. food). Some inhibitors of the polymerase chain reaction (PCR) are apparently adsorbed onto the tube wall and the next step of DNA elution leads to their release into the solution and cpnsequent negative effect on quality of DNA (e.g. decreasing of PCR amplification). The principle of the developed procedure is design a device, which utilizes transfer of magnetic particles by paramagnetic newddle from one to another Eppendorf tube, in which further processing of the sample extends. Transfer of magnetic particles with DNA using needle prevents transmission of contaminating impurities. The proposed device allows to realize above-mentioned procedure. The functionality of the device being tested in the isolation of plasmid pUC19 DNA from crude lysates of E. Coli JM 109 (pUC19).
Detailed record

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