Direct PCR amplification from saliva sample using non-direct multiplex STR kits for forensic DNA typing

Abstract Due to its proficiency to provide the most discriminating results for forensic applications, medical research and anthropological studies, multiplex PCR based STR analysis has been established as the most efficient technique in the forensic DNA analysis. Several multiplex amplification kits...

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Autores principales:	Pankaj Shrivastava, Toshi Jain, R. K. Kumawat
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cdad7fc664fd494dadccafb591892eff
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spelling	oai:doaj.org-article:cdad7fc664fd494dadccafb591892eff2021-12-02T13:27:08ZDirect PCR amplification from saliva sample using non-direct multiplex STR kits for forensic DNA typing10.1038/s41598-021-86633-02045-2322https://doaj.org/article/cdad7fc664fd494dadccafb591892eff2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86633-0https://doaj.org/toc/2045-2322Abstract Due to its proficiency to provide the most discriminating results for forensic applications, medical research and anthropological studies, multiplex PCR based STR analysis has been established as the most efficient technique in the forensic DNA analysis. Several multiplex amplification kits based on 4, 5 and 6 dyes chemistry are commercially available and used in forensic DNA typing across the globe. These multiplex PCR systems are routinely used for amplification of multiple STR loci (Autosomal, Y and/or X STR’s) in the DNA extracted from various biological samples. In the routine forensic DNA testing, DNA profile obtained is compared with the DNA profile of the reference sample, which takes a certain turnaround time and employs costly lab resources. Successive development in forensic DNA typing have resulted in advent of improved multiplex kits which have reduced the effective analysis time, cost and minimized the number of steps required in comparison to conventional forensic DNA typing. Specialized direct amplification compatible multiplex kits are also available nowadays. These kits are relatively costlier but still require few pre-processing steps, which does not make them worth the hefty cost. Herein, this study, we have used non-direct multiplex STR kits to assess their efficacy for direct amplification. In the present study, 103 saliva samples were directly amplified without any pre-treatment of the samples using thirteen non-direct multiplex kits (4 dyes, 5 dyes and 6 dyes chemistry based) for forensic DNA typing. Here, we report a validated direct PCR amplification protocol from the reference saliva samples by omitting DNA extraction and quantification steps, which resulted in 80% reduction of the turnaround time. The developed protocol is cost effective, time efficient and it does not compromise with the quality of DNA profiles. To the best of our knowledge, this is the first report for direct amplification of DNA with the most commonly used non-direct multiplex STR kits without any pre-treatment of the sample. Complete DNA profiles matching all the essential quality parameters were obtained successfully from all the tested samples.Pankaj ShrivastavaToshi JainR. K. KumawatNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-19 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Pankaj Shrivastava Toshi Jain R. K. Kumawat Direct PCR amplification from saliva sample using non-direct multiplex STR kits for forensic DNA typing
description	Abstract Due to its proficiency to provide the most discriminating results for forensic applications, medical research and anthropological studies, multiplex PCR based STR analysis has been established as the most efficient technique in the forensic DNA analysis. Several multiplex amplification kits based on 4, 5 and 6 dyes chemistry are commercially available and used in forensic DNA typing across the globe. These multiplex PCR systems are routinely used for amplification of multiple STR loci (Autosomal, Y and/or X STR’s) in the DNA extracted from various biological samples. In the routine forensic DNA testing, DNA profile obtained is compared with the DNA profile of the reference sample, which takes a certain turnaround time and employs costly lab resources. Successive development in forensic DNA typing have resulted in advent of improved multiplex kits which have reduced the effective analysis time, cost and minimized the number of steps required in comparison to conventional forensic DNA typing. Specialized direct amplification compatible multiplex kits are also available nowadays. These kits are relatively costlier but still require few pre-processing steps, which does not make them worth the hefty cost. Herein, this study, we have used non-direct multiplex STR kits to assess their efficacy for direct amplification. In the present study, 103 saliva samples were directly amplified without any pre-treatment of the samples using thirteen non-direct multiplex kits (4 dyes, 5 dyes and 6 dyes chemistry based) for forensic DNA typing. Here, we report a validated direct PCR amplification protocol from the reference saliva samples by omitting DNA extraction and quantification steps, which resulted in 80% reduction of the turnaround time. The developed protocol is cost effective, time efficient and it does not compromise with the quality of DNA profiles. To the best of our knowledge, this is the first report for direct amplification of DNA with the most commonly used non-direct multiplex STR kits without any pre-treatment of the sample. Complete DNA profiles matching all the essential quality parameters were obtained successfully from all the tested samples.
format	article
author	Pankaj Shrivastava Toshi Jain R. K. Kumawat
author_facet	Pankaj Shrivastava Toshi Jain R. K. Kumawat
author_sort	Pankaj Shrivastava
title	Direct PCR amplification from saliva sample using non-direct multiplex STR kits for forensic DNA typing
title_short	Direct PCR amplification from saliva sample using non-direct multiplex STR kits for forensic DNA typing
title_full	Direct PCR amplification from saliva sample using non-direct multiplex STR kits for forensic DNA typing
title_fullStr	Direct PCR amplification from saliva sample using non-direct multiplex STR kits for forensic DNA typing
title_full_unstemmed	Direct PCR amplification from saliva sample using non-direct multiplex STR kits for forensic DNA typing
title_sort	direct pcr amplification from saliva sample using non-direct multiplex str kits for forensic dna typing
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/cdad7fc664fd494dadccafb591892eff
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Direct PCR amplification from saliva sample using non-direct multiplex STR kits for forensic DNA typing

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