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NCJ Number: 252862 Find in a Library
Title: Assessing the Effects of DNA Damage on Next Generation mtDNA Sequencing
Author(s): Mitchell M. Holland
Corporate Author: Pennsylvania State University
United States of America
Date Published: April 2019
Page Count: 14
Sponsoring Agency: Pennsylvania State University
University Park, PA 16802
University of Louisville
Louisville, KY 40292
US Dept of Justice NIJ Pub
Washington, DC 20531
Grant Number: 2015-DN-BX-K025
Sale Source: US Dept of Justice NIJ Pub
810 Seventh Street, NW
Washington, DC 20531
United States of America
Document: PDF
Type: Program/Project Description; Report (Grant Sponsored); Report (Study/Research); Research (Applied/Empirical)
Format: Document; Document (Online)
Language: English
Country: United States of America
Annotation: This study assessed the impact of DNA damage on the interpretation of massively parallel sequencing mitochondrial (mt) DNA heteroplasmy from a variety of perspectives.
Abstract: The first part of the study focused on methods development. This involved a mtDNA qPCR assay to assess both quantity and quality of mtDNA; amplification schemes for production of mtDNA products for massively parallel sequencing (MPS) analysis; and bioinorganic pipelines and software development for analysis of MPS mtDNA data, along with initial considerations of DNA damage. These achievements were critical for completion of the project and resulted in multiple publications. The second part of the study focused on the evaluation of various approaches to modeling deamination, depurination, and oxidation-based DNA damage, including whether approaches of biological repair can reverse the damage. These studies have led to targeted experiments on mock-evidence-type samples. The low template study provided a valuable perspective on the influence of low template samples when considering the impact of DNA damage on the interpretation of mtDNA MPS data. In addition, the findings confirmed previous observation that as the amplicon size being evaluated for damage increases, the amount of damage decreases. This is an important outcome, since most of the studies in forensic laboratories involve the analysis of smaller amplification products. Final data analysis has been completed, and a manuscript is being prepared. 8-item bibliography
Main Term(s): Forensic sciences
Index Term(s): Degraded DNA Samples; DNA contamination; DNA Typing; National Institute of Justice (NIJ); NIJ final report
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