Association Of A Body Fluid With A Dna Profile By Targeted Rna/Dna Deep Sequencing

Keywords

Body fluid identification; Forensic science; Massively parallel sequencing (MPS); Messenger RNA (mRNA)

Abstract

Our goal for this study was, in addition to body fluid/tissue identification, to associate tissue specific mRNA transcripts to the donor of a stain. This is especially interesting for mixed body fluid samples, where we can find out who contributed which body fluid. Within the tissue specific sequences we looked for coding region variants (cSNPs) that discriminate European individuals the most. We successfully tested a targeted MPS assay for the Illumina MiSeq platform in 188 European individuals for the detection of the 35 selected cSNPs on gDNA level. The match probabilities for the SNPs within one body fluid and for sets of markers from different body fluids confirmed the discriminatory power of these markers. A separate targeted cSNP panel on RNA level showed good specificity for blood, semen and menstrual blood. For saliva, vaginal secretion and skin, the marker design needs to be optimized with special attention to cross reactivity with DNA contaminants. As a proof-of-principle we could demonstrate that with our targeted DNA and RNA MPS assays we are able to assign a body fluid to a specific individual.

Publication Date

12-1-2017

Publication Title

Forensic Science International: Genetics Supplement Series

Volume

6

Number of Pages

e112-e113

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.fsigss.2017.09.037

Socpus ID

85029525402 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85029525402

This document is currently not available here.

Share

COinS