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Taesheng Huang 1 Article
Nail DNA and Possible Biomarkers: A Pilot Study
Joshua Park, Debbie Liang, Jung Woo Kim, Yongjun Luo, Taesheng Huang, Soo-Young Kim, Seong-Sil Chang
J Prev Med Public Health. 2012;45(4):235-243.   Published online July 31, 2012
DOI: https://doi.org/10.3961/jpmph.2012.45.4.235
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  • 9 Crossref
AbstractAbstract PDF
Objectives

Nail has been a substitute DNA source for genotyping. To investigate the integrity and consistency of nail DNA amplification for biomarker study, nail clippings from 12 subjects were collected at monthly intervals. The possibility of longer amplification and existence of GAPDH RNA/protein, were also investigated with three nail samples.

Methods

Three primer sets were designed for quantitative amplification of nuclear and mitochondrial genes and analysis of their consistency. The mean threshold cycles in amplification of the target genes were compared to test the consistency of polymerase chain reaction (PCR) performance among individual factors including age groups, sex, family, the nail source, and by the size of the amplification segments.

Results

The amplification of the target genes from nail DNA showed similar integrity and consistency between the nail sources, and among the serial collections. However, nail DNA from those in their forties showed earlier threshold cycles in amplification than those in their teens or seventies. Mitochondrial DNA (mtDNA) showed better DNA integrity and consistency in amplification of all three targets than did nuclear DNA (nucDNA). Over 9 kb of mtDNA was successfully amplified, and nested quantitative PCR showed reliable copy numbers (%) between the two loci. Reverse transcription PCR for mRNA and immunoblotting for GAPDH protein successfully reflected their corresponding amounts. Regarding the existence of RNA and protein in nails, more effective extraction and detection methods need to be set up to validate the feasibility in biomarker study.

Conclusions

Nail DNA might be a feasible intra-individual monitoring biomarker. Considering integrity and consistency in target amplification, mtDNA would be a better target for biomarker research than nucDNA.

Summary

Citations

Citations to this article as recorded by  
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    Journal of Forensic Science and Medicine.2024; 10(3): 191.     CrossRef
  • Quantitation of human mitochondrial DNA and whole mtGenomes sequencing of fingernail/hair shaft samples
    Hui Li, Yu Cao, Fan Yang, Xiling Liu, Ruiyang Tao, Ruocheng Xia, Ruxin Zhu, Lei Jiang, Shiquan Liu, Chengtao Li
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  • Cell-free DNA from nail clippings as source of normal control for genomic studies in hematologic malignancies
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    Haematologica.2024; 109(10): 3269.     CrossRef
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    S F Z Bakri, A Hariri, N F Ma’arop, N S A W Hussin
    IOP Conference Series: Materials Science and Engineering.2017; 165(1): 012019.     CrossRef
  • High-Quality DNA from Fingernails for Genetic Analysis
    Sandra Preuner, Martin Danzer, Johannes Pröll, Ulrike Pötschger, Anita Lawitschka, Christian Gabriel, Thomas Lion
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  • DNA from Nails for Genetic Analyses in Large-Scale Epidemiologic Studies
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