Ixodes scapularis
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA856331 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR25992105_1.fastq.gz | Fastqsanger.gz | |||
| SRR25992105_2.fastq.gz | Fastqsanger.gz | |||
| SRR25992106_1.fastq.gz | Fastqsanger.gz | |||
| SRR25992106_2.fastq.gz | Fastqsanger.gz | |||
| SRR25992107_1.fastq.gz | Fastqsanger.gz |
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Project description:Ixodes scapularis midgut Transcriptome following SelK knockdown in Borrelia burgdorferi-infected ticks
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Project description:Ticks are blood feeding arthropod ectoparasites that transmit pathogens, which cause diseases in humans and animals worldwide. In the past ten decades, the continuous human exploitation of environmental resources and the increase in human outdoor activities has promoted contact with arthropod vectors normally present in the wild, resulting in increased transmission of vector-borne pathogens. In addition, vector populations are expanding in response to climate change and human interventions that impact reservoir host movement and human exposure to infected vectors. Among these emerging vector-borne pathogens, Anaplasma phagocytophilum (Rickettsiales: Anaplasmataceae) has become an important tick-borne pathogen in the United States, Europe and Asia, with increasing numbers of infected people and animals every year. Diseases caused by A. phagocytophilum include human granulocytic anaplasmosis (HGA), equine and canine granulocytic anaplasmosis and tick-borne fever (TBF) in ruminants. The natural infection cycle of A. phagocytophilum is dependent upon the presence of infected vertebrate reservoir hosts and Ixodid tick vectors. In the United States and Europe the main vector species are Ixodes scapularis, Ixodes pacificus, and Ixodes ricinus, while a wide range of mammals, lizards, and birds serve as reservoir hosts for various A. phagocytophilum genotypes. A. phagocytophilum initially infects tick midgut cells and then subsequently develops in salivary glands for transmission to susceptible hosts during tick feeding where the pathogen infects granulocytic cells, primarily neutrophils. Anaplasma phagocytophilum develops within membrane-bound inclusions in the host cell cytoplasm. This pathogen has evolved with its tick and vertebrate hosts through dynamic processes involving genetic traits of the pathogen and hosts that collectively mediate pathogen infection, development, persistence, and survival. However, the mechanisms used by A. phagocytophilum for molecular mechanisms involved in tick-pathogen interactions have not been fully characterized. The objective of this study is to characterize the dynamics of the microRNA response in the tick vector Ixodes scapularis in response to A. phagocytophilum infection. To address this objective, the composition of tick microRNAs was characterize using RNA sequencing in I. scapularis tick cells in response to A. phagocytophilum infection. The discovery of these mechanisms provides evidence that a control strategy could be developed targeted at both vertebrate and tick hosts for more complete control of A. phagocytophilum and its associated diseases.
2016-03-19 | GSE79324 | GEO
Project description:The goal of this study was to identify and compare baseline mRNA expression levels for a set of Ixodes scapularis cell lines originally reported in Munderloh et al. 1994 Journal of Parasitology 80(4):533-43. Three unmodified I. scapularis cell lines were included in the study: ISE6, IDE2, and ISE18. In addition, one cell population modified by insertion of a transgenic cassette using Sleeping Beauty transposition was also included: ISE18SB. The ISE18SB cells are a non-clonal cell population fully enriched for expression of a DsRed fluorescent marker gene included within the transposon insertion cassette. For all replicate samples, cells were collected after reaching approximately 60% confluency under standard culture conditions, then processed for RNA-seq analysis.
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