Dental Journal (Majalah Kedokteran Gigi)
ISSN 1978-3728
Vol. 46 / No. 3 / Published : 2013-09
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Original Article :
Heteroplasmy analysis of dental pulp mitochondrial dna in forensic personal identification
Author :
- Ardyni Febri K*1
- Retno Pudji R*2
- Agung Sosiawan*3
- Program Studi Magister Ilmu Kesehatan Gigi
- Dosen Fakultas Kedokteran Gigi
- Dosen Fakultas Kedokteran Gigi
Abstract :
Background: Mitochondrial DNA (mtDNA) sequence analysis of the hypervariable control region has been shown to be an effective tool for personal identification. The high copy and maternal mode of inheritance make mtDNA analysis particularly useful when old samples or degradation of biological samples prohibits the detection of nuclear DNA analysis. Dental pulp is covered with hard tissue such as dentin and enamel. It is highly capable of protecting the DNA and thus is extremely useful. One of the diasadvantages of mitochondrial DNA is heteroplasmy. Heteroplasmy is the presence of a mixture of more than one type of an organellar genome within a cell or individual.It can lead to ambiguity in forensic personal identification. Due to that, the evidence of heteroplasmy in dental pulp is needed. Purpose: Proving the heteroplasmy evidence in dental pulp. Methods: Blood and teeth samples were taken from 6 persons, each samples was extracted with DNAzol. DNA samples were amplified with PCR and sequencing to analyze the nucleotide sequences polymorphism of the hypervariable region 1 in mtDNA and compared with revised Cambridge Reference Sequence (rCRS). Results: The dental pulp and blood nucleotide sequence of hypervariable region 1 mitochondral DNA showed polymorphism when compared with rCRS and heteroplasmy when compared between dental pulp with blood. Conclusion: It was proven that heteroplasmy is occurred in mitochondrial DNA from dental pulp.
Keyword :
Personal identification, mtDNA, dental pulp, heteroplasmy,
References :
Tsutsumi H,(2006) Hypervariable region structure and polymorphism of mtDNA from dental pulp and a family analysis - : J Oral Sci
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Volume : 46 / No. : 3 / Pub. : 2013-09 |
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