Developing species-specific primers to identify Bulinus truncatus and Bulinus beccari, the intermediate hosts of Schistosoma haematobium in Saudi Arabia

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• 作者：Osama M.S. Mostafa^a ; ^b ; ^{osamamostafa@hotmail.com} ; Saad M. Bin Dajem^a ; Ahmed Al-Qahtani^c ; Essam H. Ibrahim^a ; ^d ; Saleh A.S. Al-Quraishy^e
• 关键词：B. truncatus ; Bulinus truncatus ; B. beccari ; Bulinus beccari ; KSA ; Kingdom of Saudi Arabia ; PCR ; polymers chain reaction ; RAPD ; randomly amplified polymorphic ; RFLP ; restriction fragment length polymorphism ; S. haematobium ; Schistosoma haematobium ; S. jap
• 刊名：Gene
• 出版年：2012
• 期刊代码：73_03781119
• 类别：bio
• 出版时间：15 May, 2012
• 卷：499
• 期：2
• 页码：256-261
• 文件大小：620 K

摘要

This work aimed to determine the inter- and intra-specific variations in populations of Bulinus truncatus and Bulinus beccari, the intermediate hosts of Schistosoma haematobium in Saudi Arabia, and to develop species-specific primers to identify these snails as a first step in the development of multiplex PCR for simultaneously identifying the snails and diagnosing its infections in a single step. Two populations of B. truncatus were collected from Asser and Bisha (A and B), and two B. beccari populations were collected from Mahial Asser and Merba (C and D). The snails鈥?genomic DNA was extracted and amplified using 5 different primers. The primers displayed variable intra- and inter-specific differences across the populations. The largest RAPD-PCR fragments were cloned into a vector as a preparatory step for sequencing. Similarity searches for the sequenced cloned inserts revealed no similar sequences in the GenBank database or its associated databases. Specific primers used to target the B. truncatus and B. beccari genomes were designed using the Gene Runner program and based on the DNA sequences obtained from RAPD fragment sequence analyses. Using these primers for specific PCRs resulted in expected single-band PCR products of 536 bp for B. beccari and 478 bp for B. truncatus. These results will be helpful for simultaneously identifying B. truncatus and B. beccari snails and diagnosing S. haematobium infections within the snails using single step multiplex PCR.