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Ixodes scapularis strain:ISE6 cell line

ABSTRACT: Sequencing and Comparison of Genomes and Transcriptome Profiles of Human Ehrlichiosis Agents

PROVIDER: PRJNA239331 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR1188750_1.fastq.gz	Fastqsanger.gz
	SRR1188750_2.fastq.gz	Fastqsanger.gz
	SRR1189460_1.fastq.gz	Fastqsanger.gz
	SRR1189460_2.fastq.gz	Fastqsanger.gz
	SRR1189560_1.fastq.gz	Fastqsanger.gz

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A draft genome sequence for the Ixodes scapularis cell line, ISE6.

Project description:Background: The tick cell line ISE6, derived from Ixodes scapularis, is commonly used for amplification and detection of arboviruses in environmental or clinical samples. Methods: To assist with sequence-based assays, we sequenced the ISE6 genome with single-molecule, long-read technology. Results: The draft assembly appears near complete based on gene content analysis, though it appears to lack some instances of repeats in this highly repetitive genome. The assembly appears to have separated the haplotypes at many loci. DNA short read pairs, used for validation only, mapped to the cell line assembly at a higher rate than they mapped to the Ixodes scapularis reference genome sequence. Conclusions: The assembly could be useful for filtering host genome sequence from sequence data obtained from cells infected with pathogens.

| S-EPMC5883391 | biostudies-literature

Induction of intracellular ferritin expression in embryo-derived Ixodes scapularis cell line (ISE6).

Project description:Iron is a very important nutrient for cells; however, it could also cause fatal effects because of its capability to trigger oxidative stress. Due to high exposure to iron from their blood diet, ticks make use of several mechanisms to cope up with oxidative stress. One mechanism is iron sequestration by ferritin and its control protein (IRP). Since the IRP activity is dependent on the ferrous iron concentration, we tried to induce intracellular ferritin (FER1) protein expression by exposing Ixodes scapularis embryo-derived cell line (ISE6) to different concentrations of ferrous sulphate at different time points. We were able to induce FER1 protein after exposure to 2 mM of ferrous sulphate for 48 h, as observed in both Western blotting and indirect immunofluorescent antibody tests. This could indicate that the FER1 produced could be a product of the release of IRPs from the FER1 mRNA leading to its translation. The RNA interference of FER1, through the transfection of dsRNA, led to an increase in mortality and decrease in the cellular proliferation of ISE6 cells. Overall, ISE6 cells could be a good tool in further understanding the mechanism of FER1 action, not just in Ixodes ticks but in other tick species as well.

| S-EPMC6224502 | biostudies-literature

Canis lupus familiaris strain:DH82 cell line

Project description:Sequencing and Comparison of Genomes and Transcriptome Profiles of Human Ehrlichiosis Agents

| PRJNA239330 | ENA

Enlisting the <i>Ixodes scapularis</i> Embryonic ISE6 Cell Line to Investigate the Neuronal Basis of Tick-Pathogen Interactions.

Project description:Neuropeptides are small signaling molecules expressed in the tick central nervous system, i.e., the synganglion. The neuronal-like Ixodes scapularis embryonic cell line, ISE6, is an effective tool frequently used for examining tick-pathogen interactions. We detected 37 neuropeptide transcripts in the I. scapularis ISE6 cell line using in silico methods, and six of these neuropeptide genes were used for experimental validation. Among these six neuropeptide genes, the tachykinin-related peptide (TRP) of ISE6 cells varied in transcript expression depending on the infection strain of the tick-borne pathogen, Anaplasma phagocytophilum. The immunocytochemistry of TRP revealed cytoplasmic expression in a prominent ISE6 cell subpopulation. The presence of TRP was also confirmed in A. phagocytophilum-infected ISE6 cells. The in situ hybridization and immunohistochemistry of TRP of I. scapularis synganglion revealed expression in distinct neuronal cells. In addition, TRP immunoreaction was detected in axons exiting the synganglion via peripheral nerves as well as in hemal nerve-associated lateral segmental organs. The characterization of a complete Ixodes neuropeptidome in ISE6 cells may serve as an effective in vitro tool to study how tick-borne pathogens interact with synganglion components that are vital to tick physiology. Therefore, our current study is a potential stepping stone for in vivo experiments to further examine the neuronal basis of tick-pathogen interactions.

| S-EPMC7828734 | biostudies-literature

Characterization of an iron-inducible Haemaphysalis longicornis tick-derived promoter in an Ixodes scapularis-derived tick cell line (ISE6).

Project description:BackgroundTicks are important vectors of disease-causing pathogens. With the rise of resistance to chemical acaricides, alternative methods in tick control are warranted. Gene manipulation has been successful in controlling mosquitoes and mosquito-borne diseases and is now looked upon as a candidate method to control ticks and tick-borne pathogens. Our previous study has identified the actin and ferritin promoter regions in the Haemaphysalis longicornis tick.ResultsHere, the ferritin-derived promoter from the H. longicornis tick was characterized in silico, and the core promoter sequences and some of its important components were identified. Several truncations of the promoter region were created and inserted to a reporter plasmid to determine the important components for its activity. The activities of the truncated promoters on the Ixodes scapularis tick cell line (ISE6) were measured via a dual luciferase assay using experimental and control reporter genes. To induce the promoter's activity, transfected ISE6 cells were exposed to ferrous sulfate. The 639 nucleotides truncated promoter showed the highest activity on ISE6 cells when exposed to 1 mM ferrous sulfate.ConclusionIn this study, we characterized an iron-inducible tick promoter that could be a valuable tool in the development of a gene-manipulation system to control ticks and tick-borne pathogens.

| S-EPMC6593522 | biostudies-literature

Ixodes scapularis strain:ISE6-2

Project description:Arthropod Cell Line RNA Seq

| PRJNA238754 | ENA

Ixodes scapularis strain:ISE6-3

Project description:Arthropod Cell Line RNA Seq

| PRJNA238755 | ENA

Ixodes scapularis strain:ISE6-4

Project description:Arthropod Cell Line RNA Seq

| PRJNA238756 | ENA

Ixodes scapularis strain:ISE6-1

Project description:Arthropod Cell Line RNA Seq