A repertoire of the dominant transcripts from the salivary glands of the blood-sucking bug, Triatoma dimidiata, a vector of Chagas disease.

A repertoire of the dominant transcripts from the salivary glands of the blood-sucking bug, Triatoma dimidiata, a vector of Chagas disease.
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DOI:
10.1016/j.meegid.2009.10.012
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发表时间:
2010-03
影响因子:
3.2
通讯作者:
Hashiguchi, Yoshihisa
Hashiguchi, Yoshihisa
中科院分区:
医学3区
文献类型:
--
作者:
Kato, Hirotomo;Jochim, Ryan C.;Gomez, Eduardo A.;Sakoda, Ryo;Iwata, Hiroyuki;Valenzuela, Jesus G.;Hashiguchi, Yoshihisa

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锥蝽(T.)dimidiata 是一种食血半翅目动物,也是查加斯病的主要媒介。这种昆虫和其他吸血昆虫的唾液含有有效的药理活性成分,有助于它们在吸血过程中对抗宿主的止血和炎症系统。为了描述来自这种昆虫的潜在生物活性唾液分子的全部成分,对来自 T. dimidiata 唾液腺 cDNA 文库的一些随机选择的转录本进行了测序和分析。该分析表明,77.5% 的分离转录本编码假定的分泌蛋白,其中 89.9% 编码脂质运载蛋白家族蛋白的变体。最丰富的转录本是 Procalin(T. protracta 唾液的主要过敏原)的同源物,占编码假定分泌蛋白的转录本的 50% 以上,表明它可能在血液喂养过程中发挥重要作用。其他编码脂质运载蛋白家族蛋白的唾液转录物与三糖蛋白(一种凝血酶抑制剂)、三唑菌素(一种激肽释放酶-激肽系统抑制剂)、帕利地平(一种胶原诱导的血小板聚集抑制剂)和其他功能未知的转录物具有同源性。
Triatoma (T.) dimidiata is a hematophagous Hemiptera and a main vector of Chagas disease. The saliva of this and other blood-sucking insects contains potent pharmacologically active components that assist them in counteracting the host hemostatic and inflammatory systems during blood feeding. To describe the repertoire of potential bioactive salivary molecules from this insect, a number of randomly selected transcripts from the salivary gland cDNA library of T. dimidiata were sequenced and analyzed. This analysis showed that 77.5% of the isolated transcripts coded for putative secreted proteins, and 89.9% of these coded for variants of the lipocalin family proteins. The most abundant transcript was a homologue of procalin, the major allergen of T. protracta saliva, and contributed more than 50% of the transcripts coding for putative secreted proteins, suggesting that it may play an important role in the blood-feeding process. Other salivary transcripts encoding lipocalin family proteins had homology to triabin (a thrombin inhibitor), triafestin (an inhibitor of kallikrein–kinin system), pallidipin (an inhibitor of collagen-induced platelet aggregation) and others with unknown function.
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发表时间: 2007-08-01
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影响因子: 5.4
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