Molecular and functional characterization of olfaction genes in tsetse flies

采采蝇嗅觉基因的分子和功能特征

• 批准号: 8639598
• 负责人: Serap AKSOY
• 金额: $ 5万
• 依托单位: YALE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-03-20 至 2016-02-29
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8639598
• 关键词: Address; Adult; Africa; Africa South of the Sahara; African; African Trypanosomiasis; Agriculture; Animals; Applied Genetics; Area; Behavior; Behavioral; Bioinformatics; Biology; Collaborations; Communicable Diseases; Communities; Companions; Cues; DNA; Data; Data Analyses; Databases; Development; Diagnostic; Disease; Disease Vectors; Drug resistance; Ecology; Educational workshop; Environmental Wind; Exhibits; Gene Expression Profile; Gene Family; Gene Silencing; Genes; Genetic; Genetic Vectors; Genome; Genomics; Goals; Government Agencies; Grant; Head; Health; Heterogeneity; Human; Human Activities; In Vitro; Information Systems; Insecta; Institution; International; Kenya; Lead; Life; Literature; Mediating; Medical; Mentors; Methodology; Methods; Molecular; Molecular Profiling; Nature; Odors; Parasites; Pharmaceutical Preparations; Physiological; Physiology; Population; Population Biology; Process; Proteins; Public Health; Publishing; RNA; RNA Interference; Reproduction; Research; Research Activity; Research Institute; Research Personnel; Resources; Risk; Role; Sahara; Sampling; Scientist; Site; Smell Perception; Sudan; Tanzania; Techniques; Technology; Testing; Tissues; Training; Transcript; Tropical Disease; Trypanosoma; Trypanosoma brucei rhodesiense; Trypanosomiasis; Tsetse Flies; Uganda; Vaccines; Work; World Health Organization; base; comparative; disorder control; epidemiological model; fly; genome sequencing; human disease; improved; interdisciplinary approach; international center; new technology; next generation sequencing; odorant-binding protein; parent grant; programs; research and development; response; tool; transmission process; vector; vector control; vector transmission

DESCRIPTION (provided by applicant): The overall goal of this study is to provide information on molecular processes in tsetse vectors that mediate their olfactory processes, enabling them to locate their hosts and other critical resources for their survival and reproduction. The goals will be achieved by prospecting for and validating olfaction responsive genes in selected tsetse species (Glossina pallidipes, Glossina austeni and Glossina fuscipes fuscipes) of medical and veterinary importance in Kenya. We propose an integrated and interdisciplinary approach to: 1) Determine differences in olfactory responsive genes in sympatric Glossina pallidipes and Glossina austeni in Shimba hills and Glossina fuscipes fuscipes in Mbita in Kenya and 2) Determine functional roles of olfactory responsive genes in sympatric G. pallidipes and G. austeni in Shimba hills and G. f. fuscipes in Mbita districts in Kenya. We hypothesize that putative olfactory genes among these flies are orthologuous, differentially expressed and significantly influence responses of the flies to different odors. Adults of the selected tsetse species will be sampled from respective sites and RNA will be extracted from head tissues. We will undertake a discovery project by using next generation sequencing technologies to determine global transcriptome-level heterogeneities exhibited between the different species. The DNA obtained from the gut contents of flies will be subjected to PCR amplification with COI marker to determine the putative host species from Barcode of Life Data systems (BOLD) database. Following the comparative transcriptome analysis from the different species we will in vitro validate the presence and expression profiles of select set of putative olfaction related genes through qPCR. The functional role(s) of selected putative olfaction genes will be further investigated through RNAi gene silencing methodologies in conjunction with electro-antennogram and Wind-Tunnel techniques to establish the roles of these genes in modulating the physiology and behavior of the flies. Availability of comprehensive information on olfaction related genes, and their respective functional roles in modulating tsetse olfactory behavior will facilitate further R&D to exploit these genes to control tsetse fly vectors. This research will be done primarily in Kenya at International Centre of Insect Physiology Ecology and Kenya Agricultural Research Institute - Trypanosomiasis Research Center in collaboration with Paul Mireji with companion grant being Global Infectious Diseases (GID) D43 TW007391 (08/01/2008- 03/31/2013).

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