Visual Inputs in Mosquito Behaviors
蚊子行为中的视觉输入
基本信息
- 批准号:9165179
- 负责人:
- 金额:$ 19.31万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2016
- 资助国家:美国
- 起止时间:2016-06-16 至 2018-05-31
- 项目状态:已结题
- 来源:
- 关键词:ARRB1 geneAdultAedesAnopheles GenusArr2ArrestinsAttentionBehaviorBehavioralBinding ProteinsBiteBloodCRISPR/Cas technologyCellsCellular biologyCharacteristicsClustered Regularly Interspaced Short Palindromic RepeatsCommunicable DiseasesComplexCulicidaeCytoplasmDengueDetectionDiseaseDrosophila genusEffectivenessElectroretinographyEnvironmentFeeding behaviorsFrequenciesGenesGenetic ModelsGoalsHealthHeatingHourHumanImageIndividualInsect RepellentsInsectaLightMalariaMediatingMembraneMethodologyMonitorMovementMutationOlfactory PathwaysOrganismOutcome StudyPhotophobiaPhotoreceptorsPopulation SizesPrevalencePreventionProcessResearchResearch Project GrantsResourcesRetinaRetinal DegenerationRhodopsinRoleSensorySignal TransductionSiteSmell PerceptionSystemTestingTransgenic OrganismsVirusVisionVisualVisual FieldsVisual system structureWorkadapter proteinbasebehavior testbehavioral responsecombatdisorder controleggendonucleasefeedinggenetic resourcegenetic straingenome editingimprovedinnovationlight intensitymutantobject recognitionpathogenprotein complexreceptorresponsesensorsensory systemsuccesstraffickingtransmission processvector
项目摘要
PROJECT SUMMARY
A major goal of mosquito research is improved methodologies for control of the diseases
transmitted by these insects. The mosquito’s sensory systems provide all the information for
identifying human hosts, choosing sites for egg laying, and all the other behaviors used by this
organism. This project focuses on the mosquito’s visual capabilities. The R1-6 cells are the
major class of photoreceptors of the adult mosquito. These cells provide the sensory capability
needed for the formation of visual images required for navigation and object recognition. The
R1-6 photoreceptors of Aedes mosquitoes also possess a specialized feature in which the light
sensor of these cells, the Aaop1 rhodopsin, is actively removed from the photoreceptive
membranes in daylight and returned to these membranes at night.
We seek to understand the role of the R1-6 photoreceptors and the specialized
rhodopsin trafficking capability of these cells. Innovative gene-editing capabilities provided by
site-specific CRISPR endonucleases will facilitate the creation of an Aedes Aaop1 mutant. The
R1-6 photoreceptors will not be capable of light detection in this Aaop1 mutant. Histological
analysis will document the importance of Aaop1 in triggering the day-night cycles of
remodeling. We will also evaluate the importance of these R1-6 cells in mosquito vision by
characterizing the optomotor response of the Aaop1 mutant. The optomotor response is
indicative of the mosquito’s capability to respond to information existing within a visual field.
Both light intensity and physical characteristics of objects in the visual field will be varied to
generate a detailed understanding of the Aaop1 mutant’s visual deficits. Results in the
Drosophila system show that arrestins are adapter proteins that bind to light-activated
rhodopsin to build the protein complex responsible for light-triggered rhodopsin movement.
There are two arrestin genes expressed in Aedes photoreceptors. We will use gene editing to
create mutations in both of these genes. Characterization of these two arrestin mutants will
determine their specialized roles in Aedes photoreceptors. The effort will test the hypothesis
that inability to remove rhodopsin from the photosensitive membranes during the daylight
hours results in retinal degeneration. We will use visual response behaviors to determine how
quickly the arrestin mutants and associated retinal degenerative processes compromise the
mosquito’s visual capabilities.
In summary, this project is an innovative approach to characterize mosquito vision and
the importance of specialized features of mosquito photoreceptors. Our work will create the
first vision-defective mosquito mutants. These mutants provide a unique resource to evaluate
the role of vision in host recognition and other complex mosquito behaviors.
项目摘要
蚊子研究的一个主要目标是改进控制疾病的方法
蚊子的感觉系统提供所有的信息,
识别人类宿主,选择产卵地点,以及所有其他行为,
有机体 这个项目的重点是蚊子的视觉能力。R1 - 6细胞是蚊子的视觉细胞。
成蚊的主要感光细胞。这些细胞提供感觉能力
形成导航和物体识别所需的视觉图像所需的。
伊蚊的R1 - 6光感受器也具有一种特殊的特征,其中光
这些细胞的传感器,Aaop 1视紫红质,被主动地从光感受细胞中移除。
在白天的膜和返回到这些膜在晚上。
我们试图了解R1 - 6光感受器和专门的
这些细胞的视紫红质运输能力。
位点特异性CRISPR内切核酸酶将促进伊蚊Aaop 1突变体的产生。
在这种Aaop 1突变体中,R1 - 6光感受器将不能进行光检测。
分析将记录Aaop 1在触发昼夜循环中的重要性。
我们还将评估这些R1 - 6细胞在蚊子视觉中的重要性,
表征Aaop 1突变体的视动反应。
指示蚊子对视野内存在的信息作出反应的能力。
视野中物体的光强度和物理特性都将变化,
产生对Aaop 1突变体的视觉缺陷的详细了解。
果蝇系统表明,arrestins是一种衔接蛋白,
视紫红质来构建负责光触发视紫红质运动的蛋白质复合物。
有两个arrestin基因在伊蚊感光细胞中表达。我们将使用基因编辑,
在这两个基因中产生突变。这两个抑制蛋白突变体的特征将
确定它们在伊蚊感光器中的特殊作用。这项工作将验证这一假设
在日光下无法从感光膜上去除视紫红质
小时导致视网膜变性。我们将使用视觉反应行为来确定
抑制蛋白突变体和相关的视网膜变性过程迅速地损害了
蚊子的视觉能力。
总之,这个项目是一个创新的方法来表征蚊子的视觉和
蚊子光感受器的特殊特征的重要性。我们的工作将创造
第一个视力缺陷蚊子突变体。这些突变体提供了独特的资源来评估
视觉在宿主识别和其他复杂蚊子行为中的作用。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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JOSEPH E O'TOUSA其他文献
JOSEPH E O'TOUSA的其他文献
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{{ truncateString('JOSEPH E O'TOUSA', 18)}}的其他基金
GENETIC ANALYSIS OF RETINAL DEGENERATION IN DROSOPHILA
果蝇视网膜变性的遗传分析
- 批准号:
3263471 - 财政年份:1987
- 资助金额:
$ 19.31万 - 项目类别:
GENETIC ANALYSIS OF RETINAL DEGENERATION IN DROSOPHILA
果蝇视网膜变性的遗传分析
- 批准号:
3263470 - 财政年份:1987
- 资助金额:
$ 19.31万 - 项目类别:
GENETIC ANALYSIS OF RETINAL DEGENERATION IN DROSOPHILA
果蝇视网膜变性的遗传分析
- 批准号:
3263472 - 财政年份:1987
- 资助金额:
$ 19.31万 - 项目类别:
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