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Neuropeptide precursor gene discovery in the Chagas disease vector Rhodnius prolixus

机译:恰加斯病载体Rhodnius prolixus中神经肽前体基因的发现

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We show a straightforward workflow combining homology search in Rhodnius prolixus genome sequence with cloning by rapid amplification of cDNA ends and mass spectrometry. We have identified 32 genes and their transcripts that encode a number of neuropeptide precursors leading to 194 putative peptides. We validated by mass spectrometry 82 of those predicted neuropeptides in the brain of R. prolixus to achieve the first comprehensive genomic, transcriptomic and neuropeptidomic analysis of an insect disease vector. Comparisons of available insect neuropeptide sequences revealed that the R. prolixus genome contains most of the conserved neuropeptides in insects, many of them displaying specific features at the sequence level. Some gene families reported here are identified for the first time in the order Hemiptera, a highly biodiverse group of insects that includes many human, animal and plant disease agents.
机译:我们展示了一种简单的工作流程,将在Rhodnius prolixus基因组序列中的同源性搜索与通过快速扩增cDNA末端和质谱进行克隆相结合。我们已经鉴定出32个基因及其转录本,它们编码导致194个推定肽的许多神经肽前体。我们通过质谱法82验证了Pro。rlix大脑中的那些预测神经肽,从而实现了昆虫疾病载体的首次全面基因组,转录组和神经肽分析。现有昆虫神经肽序列的比较表明,螺旋藻基因组包含昆虫中大多数保守的神经肽,其中许多在序列水平上显示特定特征。此处首次报道的一些基因家族是按半翅目顺序鉴定的,半翅目是一种高度生物多样性的昆虫,其中包括许多人类,动植物病原体。

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