Journal of Oral Medicine and Pain

Korean Academy of Orofacial Pain and Oral Medicine (대한안면통증구강내과학회)
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Usefulness of RPS4Y Gene on Sex Determination in Human Teeth

사람치아에서 성별감정시 RPS4Y 유전자의 유용성

  • Yoon, Wang-Ro (Department of Oral Medicine, College of Dentistry, Chosun University) ;
  • Ahn, Jong-Mo (Department of Oral Medicine, College of Dentistry, Chosun University) ;
  • Yoon, Chang-Lyuk (Department of Oral Medicine, College of Dentistry, Chosun University)
  • 윤왕로 (조선대학교 치과대학 구강내과학교실) ;
  • 안종모 (조선대학교 치과대학 구강내과학교실) ;
  • 윤창륙 (조선대학교 치과대학 구강내과학교실)
  • Published : 2008.03.30
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Abstract

Ribosomal Protein S4Y(RPS4Y) gene is the human sex-linked gene on the Y chromosome. There are a number of reports on the sex determination using RPS4Y gene analysis for prevention and diagnosis in sex-linked disease. Thus RPS4Y gene is a reliable genetic marker for sex determination in forensic medicine. In general, the sex determination of an unidentified body can be achieved based on anatomical characteristics, but sometimes sex determination was considered to be difficult such as pre-adolescent bodies or decomposed, mutilated bodies. In this case, Sex determination using PCR method in human teeth produces good results. Because human teeth have a great structural durability, the DNA well preserved in the teeth. So author isolated nuclear DNA from the 20 human teeth(10 males, 10 females), performed to detect RPS4Y gene by PCR method. Samples were divided four group(10 pulp and 10 dentinal tissue in male, 10 pulp and 10 dentinal tissue in female). It was found that detection of RPS4Y gene for sex determination was possible in all the male pulp tissues and 6 out of 10 male dentinal tissues. But there was not detected in female pulp and dentinal tissues. In the view of this results demonstrates the possibility that detection of RPS4Y gene with other sex chromosome genes from the human teeth is useful to sex determination in forensic medicine.

사람 Y염색체상에 존재하는 RPS4Y(Ribosomal Protein S4Y) 유전자는 성별감정시 유용한 유전자로 규명되어 유전질환의 조기 발견이나 예방 및 태아의 성별판정 등에 응용되고 있다. 신원이 불분명한 사체에서 성별감정시, 기존의 성별감정에 이용되고 있는 다른 유전자와 함께 RPS4Y 유전자를 검색함으로써 성별감정의 신뢰도를 높힐 수 있을 것으로 사료된다. 또한 사체의 손상이 심할 때 유전자를 이용한 개인식별은 제한을 받게 된다. 이때 치아는 인체의 기관 중 가장 견고한 구조로 구성되어 있어 외부 환경에 대한 물리적, 화학적 저항성이 높아 법의치과학적 개인식별에 널리 이용되므로, 본 연구에서는 사람 치아에서 중합효소연쇄반응법을 이용한 RPS4Y유전자를 검출하여 법의학적 성별감정에 응용하고자 하였다. 남녀 각각 10개의 치아에서 치수와 상아질을 분리한 후 DNA를 추출하여 중합효소연쇄반응을 시행하였다. RPS4Y 유전자를 검출한 결과, 남자에게서만 특이적으로 유전자가 검출되었으며, 이는 사람 치아에서 RPS4Y 유전자를 이용한 성별감정이 법의학적 개인식별의 성별감정 실무에 있어서 다른 유전자와 함께 유용하게 사용될 수 있을 것으로 사료된다.

Keywords

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