MicroRNA markers for forensic body fluid identification obtained from miRCURY™ LNA array

MicroRNA markers for forensic body fluid identification obtained from miRCURY™ LNA array
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从 miRCURY™ LNA 阵列获得的用于法医体液鉴定的 MicroRNA 标记

DOI:
10.1016/j.fsigss.2015.10.006
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发表时间:
2015-12
影响因子:
--
通讯作者:
W.B. Liang
W.B. Liang
中科院分区:
--
文献类型:
--
作者:
X.Y. Luo;Z.L. Li;D. Peng;L. Wang;L. Zhang​;W.B. Liang

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MicroRNA 因其体积小和组织特异性表达方式而成为法医尸体鉴定的一种有前途的标记物,特别是在受损样品和混合物中。此前,五个研究小组报道了从不同芯片中筛选出的特定miRNA用于体液识别。我们的研究旨在通过 Exiqon 的 miRCURY™ LNA 阵列筛选适合法医体液鉴定的 miRNA。采集了外周血、经血(经血有6份)、唾液、精液、阴道分泌物和皮肤拭子等6种常见体液的5份样本。选择八个新的 miRNA 和两个报道的标记来识别五种常见的体液。由于阵列结果的相对表达比不足以识别目标体液,因此无法鉴定皮肤细胞的可靠 miRNA 标记。我们的结果表明,也许应该将更多标记组合在一起来识别皮肤细胞,并且需要完善策略。我们的研究首先将皮肤细胞引入微阵列筛查,丰富了法医体液鉴定的候选对象。
MicroRNA is a promising marker for forensic body identification especially in compromised samples and mixtures because of its small size and tissue specific expression manner. Previously, five research groups have reported specific miRNAs screened from different arrays for body fluid identification. Our study aims to screen appropriate miRNAs for forensic body fluid identification through Exiqon’s miRCURY™ LNA Array. Five samples of six common body fluids were collected including peripheral blood, menstrual blood (six samples for menstrual blood), saliva, semen, vaginal secretion and skin swabs. Eight novel miRNAs and two reported markers were selected to identify five commom body fluids. Reliable miRNA markers for skin cells couldn’t be identified because relative expression ratios from array results were not large enough to identify target body fluid. Our result suggest that, maybe more markers should be combined together to identify the skin cells, and the strategy need to be refined. Our study first introduces skin cells into the microarray screening and enriches the candidates for forensic body fluid identification.
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