Paratransgenic control of vector borne diseases.

Paratransgenic control of vector borne diseases.
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DOI:
10.7150/ijbs.7.1334
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发表时间:
2011
影响因子:
9.2
通讯作者:
Durvasula R
Durvasula R
中科院分区:
生物学2区
文献类型:
--
作者:
Hurwitz I;Fieck A;Read A;Hillesland H;Klein N;Kang A;Durvasula R

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使用化学农药控制媒介传播疾病的传统方法通常与环境毒性、对人类健康的不利影响以及昆虫抗药性的出现有关。在副转基因策略中,宿主昆虫的共生或共生微生物被转化以表达干扰病原体传播的基因产物。这些经过基因改造的微生物被重新引入昆虫体内,其中工程分子的表达降低了宿主传播病原体的能力。我们已成功利用这一策略来降低锥蝽(Rhodnius prolixus)中克氏锥虫(南美锥虫病的病原体)的携带率,目前正在开发这种方法来控制白蛉白蛉传播杜氏利什曼原虫。目前正在探索几种效应分子,包括抗菌肽和高度特异性的单链抗体,以了解它们在这两个系统中的抗寄生虫活性。为了准备最终的现场使用,我们积极参与风险评估研究,解决从改良细菌到环境微生物的水平基因转移问题。
Conventional methodologies to control vector borne diseases with chemical pesticides are often associated with environmental toxicity, adverse effects on human health and the emergence of insect resistance. In the paratransgenic strategy, symbiotic or commensal microbes of host insects are transformed to express gene products that interfere with pathogen transmission. These genetically altered microbes are re-introduced back to the insect where expression of the engineered molecules decreases the host's ability to transmit the pathogen. We have successfully utilized this strategy to reduce carriage rates of Trypanosoma cruzi, the causative agent of Chagas disease, in the triatomine bug, Rhodnius prolixus, and are currently developing this methodology to control the transmission of Leishmania donovani by the sand fly Phlebotomus argentipes. Several effector molecules, including antimicrobial peptides and highly specific single chain antibodies, are currently being explored for their anti-parasite activities in these two systems. In preparation for eventual field use, we are actively engaged in risk assessment studies addressing the issue of horizontal gene transfer from the modified bacteria to environmental microbes.
免疫主导锥虫表面糖蛋白的删除破坏鞭毛 - 细胞粘附。
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