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The human intervertebral disc as a source of DNA for molecular identification
Forensic Science, Medicine and Pathology ( IF 1.5 ) Pub Date : 2021-07-22 , DOI: 10.1007/s12024-021-00401-0
Julia Becker 1 , Nina Sophia Mahlke 1 , Stefanie Ritz-Timme 1 , Petra Boehme 1
Affiliation  

Genetic analyses such as STR-typing are routinely used for identification purposes in forensic casework. Although genotyping techniques only require a minimum amount of DNA to provide a genetic profile, DNA quality differs not only between but also within tissues during ongoing decomposition. Initiated by a recent case where, due to the constitution of the body, preferred tissue was not available or only resulted in a partial and not usable DNA profile, the analysis of intervertebral discs as a source of DNA was considered. As the analysis of this tissue resulted in a high quality DNA profile a further study was performed in which thirty intervertebral discs dissected from bodies in different stages of decay were analyzed. All samples yielded good quality DNA in quantities suitable for STR-based amplification with no or only low degradation indices, resulting in complete genetic profiles. These results demonstrate the robustness of human intervertebral disc tissue as a source of DNA for molecular identification purposes.



中文翻译:

人类椎间盘作为分子鉴定的 DNA 来源

诸如 STR 分型之类的遗传分析通常用于法医案件的识别目的。尽管基因分型技术只需要最少量的 DNA 即可提供遗传图谱,但在正在进行的分解过程中,DNA 质量不仅在组织之间存在差异,而且在组织内部也存在差异。由最近的一个案例开始,由于身体的构造,首选组织不可用或仅导致部分和不可用的 DNA 谱,考虑将椎间盘作为 DNA 来源进行分析。由于对该组织的分析产生了高质量的 DNA 谱,因此进行了进一步的研究,其中分析了从处于不同腐烂阶段的身体解剖的 30 个椎间盘。所有样品都产生了适合基于 STR 扩增的高质量 DNA,没有或只有低降解指数,从而产生完整的遗传图谱。这些结果证明了人类椎间盘组织作为用于分子鉴定目的的 DNA 来源的稳健性。

更新日期:2021-07-22
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