Extraction strategy for obtaining DNA from bloodstains for PCR amplification and typing of the HLA-DQa gene
- 1 May 1991
- journal article
- Published by Springer Nature in International journal of legal medicine
- Vol. 104 (3) , 145-148
- https://doi.org/10.1007/bf01369719
Abstract
A simple, practical approach for the extraction of PCR-amplifiable DNA for the HLA-DQa gene from bloodstains deposited on various substrates is described. DNA from bloodstains is purified using Chelex 100 ion-exchange resin and then amplified. If amplification is not achieved, the extract is washed through a Centricon 100 dialysis/concentration tube. If the second amplification of this extract produces a negative result, the extract is processed with Chelex 100 again. This approach has been found to be reliable, safe, efficient and economical. Eine einfache DNA-Extraktionsmethode zur direkten Amplifikation des HLA-DQa-Locus aus auf verschiedenen Spurenträgern angelegten Blutspuren wird beschrieben. Die Extraktion erfolgt mittels des Chelatbildners Chelex 100. Ist die Amplifikation inhibiert, wird das Extrakt in Centricon 100 Mikrokonzentrator-Röhrchen dialysiert. Bleibt auch eine zweite Amplifikation negativ, erfolgt eine erneute Reinigung mittels Chelex 100. Diese Vorgangsweise erwies sich als effizient, zuverlässig und praktikabel.Keywords
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