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Ribosomal DNA as target for the assessment of DNA degradation of human and canine DNA.
Heß, Sarah Aurora; Trapani, Salvatore; Boronat, Maria Del Mar; Theunissen, Glenn M G; Rolf, Burkhard; Jäger, Richard.
Afiliación
  • Heß SA; Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig Str. 20, 53359 Rheinbach, Germany; Institute of Safety and Security Research, Hochschule Bonn-Rhein-Sieg, University of Applied Sciences, Grantham Allee 20, 53757 Sankt Augustin, Germany.
  • Trapani S; Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig Str. 20, 53359 Rheinbach, Germany; Università degli Studi di Palermo, University of Palermo, 90133 Palermo, PA, Italy.
  • Boronat MDM; Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig Str. 20, 53359 Rheinbach, Germany.
  • Theunissen GMG; Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig Str. 20, 53359 Rheinbach, Germany; Institute of Safety and Security Research, Hochschule Bonn-Rhein-Sieg, University of Applied Sciences, Grantham Allee 20, 53757 Sankt Augustin, Germany.
  • Rolf B; Eurofins Medigenomix Forensik GmbH, Anzinger Str. 7a, 85560 Ebersberg, Germany.
  • Jäger R; Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig Str. 20, 53359 Rheinbach, Germany; Institute of Safety and Security Research, Hochschule Bonn-Rhein-Sieg, University of Applied Sciences, Grantham Allee 20, 53757 Sankt Augustin, Germany; Institute for Functio
Leg Med (Tokyo) ; 48: 101819, 2021 Feb.
Article en En | MEDLINE | ID: mdl-33248354
The assessment of DNA amount and DNA integrity can support forensic DNA analysis, in particular of problematic traces such as single telogen hairs where STR typing success is often hampered by low amounts and strong degradation of nuclear DNA. Common strategies consist of quantitative polymerase chain reaction (qPCR)-based analysis of the abundance of a short versus a long nuclear amplicon, the latter prone to DNA degradation. To increase sensitivity, commercial qPCR solutions rest on amplification of multi-copy DNA sequences. Here we show that ribosomal DNA (rDNA) sequences are well suited for the same purpose. Because rDNA sequences are present in high copy number in most eukaryotic species, qPCR strategies can easily be adapted to non-human species. In this paper, we establish qPCR-based assays for human or dog DNA, respectively, which allow for sensitive analysis of DNA amounts and DNA degradation. We show that the human system can be applied to DNA of single telogen hairs, where STR typing success correlates with measured amounts and integrity of the DNA. By adapting the system to dog rDNA sequences we found that single telogen dog hairs often displayed less DNA degradation than human telogen hairs, in most cases allowing for successful STR typing. Thus, qPCR-based analysis of rDNA represents a cost-effective, highly sensitive strategy to assess DNA amount and integrity that can be adapted to hairs or other traces from various animal species.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: ADN Ribosómico / Dermatoglifia del ADN / Perros / Cabello Límite: Animals / Humans Idioma: En Revista: Leg Med (Tokyo) Asunto de la revista: JURISPRUDENCIA Año: 2021 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Irlanda
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: ADN Ribosómico / Dermatoglifia del ADN / Perros / Cabello Límite: Animals / Humans Idioma: En Revista: Leg Med (Tokyo) Asunto de la revista: JURISPRUDENCIA Año: 2021 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Irlanda