一种用于检测山羊、绵羊和马的脑脊液线虫病的致病寄生虫——狗尾草(Setaria digitata)诊断性DNA探针的研制

W.S.S. Wijesundera, N.V. Chandrasekharan, E.H. Karunanayake, S.P. Dharmasena
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引用次数: 15

摘要

从狗尾草(Setaria digitata)基因组中克隆了两个重复序列(IpSdM和IpSdS)并进行了测序。当IpSdM (214 bp)和IpSdS (201 bp)比对时,发现它们具有高度的同源性(85%),表明它们属于同一个重复序列家族。IpSdM代表一个完整的重复元素,而ipsd由两个部分重复元素串联组成。这些元素存在于大约1万个拷贝中,占digilata基因组的2.8%。作为一种诊断探针,IpSdM可以检测到低至100 pg的数字链球菌和唇乳头链球菌的DNA。它还可以检测单个微丝虫和L3幼虫,使其成为监测牛和蚊子媒介种群以预防脑脊液线虫病的宝贵工具。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of a diagnostic DNA probe to detect Setaria digitata: The causative parasite of cerebrospinal nematodiasis in goats, sheep and horses

Two repetitive sequences (IpSdM and IpSdS) have been cloned andsequenced from the genome of Setaria digitata. When IpSdM (214 bp) and IpSdS (201 bp) were aligned, a high degree of homology (85%) was observed, indicating that they belong to the same family of repeats. IpSdM represents a complete repeating element while IpSdS consists of two partial repeating elements arranged in tandem. The elements are present in about 10 000 copies comprising 2.8% of the S. digilata genome. As a diagnostic probe IpSdM detects as little as 100 pg DNA of both S. digilata and S. labiato-papillosa. It can also detect a single microfilaria and a L3 larva making it a valuable tool to monitor cattle and mosquito vector populations in the prevention of cerebrospinal nematodiasis.

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