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Transcriptome profile of microRNAs associated with cold tolerance in Dermacentor silvarum ticks

ABSTRACT: Transcriptome profile of microRNAs associated with cold tolerance in Dermacentor silvarum ticks

PROVIDER: PRJNA765368 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR16013032.fastq.gz	Fastqsanger.gz
	SRR16013033.fastq.gz	Fastqsanger.gz
	SRR16013034.fastq.gz	Fastqsanger.gz
	SRR16013035.fastq.gz	Fastqsanger.gz
	SRR16013036.fastq.gz	Fastqsanger.gz

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Transcriptome profile of microRNAs associated with cold tolerance in Dermacentor silvarum ticks

Project description:We identified and functionally explored D. silvarum miRNAs involved in cold response to gain further understanding of the molecular regulatory mechanisms underlying the cold stress in ticks. The microRNA libraries of D. silvarum were established via high-throughput sequencing after exposure to different cold treatments. A total of 147 miRNAs, including 44 known miRNAs and 103 new miRNAs, were identified.

2021-09-29 | GSE184617 | GEO

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DNA Methyltransferases Contribute to Cold Tolerance in Ticks <i>Dermacentor silvarum</i> and <i>Haemaphysalis longicornis</i> (Acari: Ixodidae).

Project description:DNA methylation, mediated by DNA methyltransferases (Dnmts), is a typical epigenetic process that plays an important role in affecting organism acclimatization and adaptation to environmental changes. However, information about Dnmts and their associations with the cold tolerance of ticks remains meager. Hence, in the present study, the Dnmts in important vector ticks Dermacentor silvarum and Haemaphysalis longicornis were cloned and identified, and their functions in cold response were further explored. Results showed that the length of DsDnmt and DsDnmt1 in D. silvarum, and HlDnmt1 and HlDnmt in H. longicornis were 1,284, 549, 1,500, and 1,613 bp, respectively. Bioinformatics in protein analysis revealed that they were all unstable hydrophilic proteins and were mainly characterized with Dcm (DNA cytosine methyltransferase domain), Dnmt1-RFD (DNA methyltransferase replication foci domain), zf-CXXC (zinc finger-CXXC domain), and BAH (Bromo adjacent homology domain). The relative expression of these Dnmts was reduced after cold treatment for 3 days (P < 0.05), and increased with the extension of treatment. Western blot revealed that Dnmt1 decreased first and then increased significantly (P < 0.05) in both tick species, whereas other Dnmts fluctuated at varying degrees. RNA interference significantly silenced the genes Dnmts (P < 0.01), and mortality increased significantly (P < 0.05), when exposed to sub-lethal temperature, underscoring the important roles of Dnmts during the cold response of D. silvarum and H. longicornis. The above results lay the foundation for further understanding of the epigenetic regulation of DNA methylation in cold acclimatization and adaptation of ticks.

| S-EPMC8426640 | biostudies-literature

Dermacentor

Project description:Dermacentor ticks Raw sequence reads

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Comparative proteomics of artificially infected Dermacentor reticulatus tick vector by human pathogenic bacterium Rickettsia slovaca

Project description:Ticks are vectors of different pathogens causing human and animal diseases. Particularly, Rickettsia slovaca is zoonotic infectious bacterium transmitted by Dermacentor ticks, agent of tick-borne lymphadenopathy (TIBOLA), common across Europe. Current studies point to extreme complexity of bacterial induced effects in tick host. Systems biology tools, including proteomics, greatly contribute to understanding of molecular details of pathogen-tick-host interactions. Herein we compared laboratory-infected ticks with uninfected control after four weeks of incubation. Propagation of R. slovaca was confirmed by quantitative PCR. Using DNA was confirmed infection with R. slovaca. By proteomic approach, we discovered 33 differentially abundant gel spots, 23 of them accumulated upon artificial infection with R. slovaca. Modest 6.9% of tick proteome was affected. The protein localizations showing that eight proteins spots might be secreted, three cytoplasmic, two mitochondrial, six likely having multiple localizations, one cell membrane and one nucleus. We identified following proteins defensin, serpins, glycine-rich protein, heat shock protein involved in artificially infected tick vector, Dermacentor reticulatus. Discovered differentially abundant proteins should be further evaluated as targets to block the transmission of bacterial pathogen.

2019-08-14 | PXD011442 | Pride

Detection in Malaysia of Rickettsia sp. from Haemaphysalis and Dermacentor ticks

Project description:Detection in Malaysia of Rickettsia sp. from Haemaphysalis and Dermacentor ticks

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Project description:The Ixodidea tick Dermacentor marginatus is a vector of many pathogens wide spread in Eurasia. Study of gene targets of the tick species provides insight to find novel tick protective antigen for drug development and vaccine targets. To obtain a broader picture of gene sequences and changes in expression level, we aimed to characterize the whole body transcriptome in D. marginatus adult female after engorgement and long-term starvation using RNA-seq. We have assembled and analyzed transcriptome of D. marginatus females 5 days after ecdysis, 24 h after a blood meal, and 6 months under controlled experimental conditions. Sequencing produced 30251 unigenes, of which 32% were annotated using Trinity. Gene expression was compared among groups differed by status as newly molted, starved and engorged female adult ticks. Nearly 1/3 of the unigenes in each group were differentially expressed compared to the other two group, and we found that the most numerous were proteins involved in catalytic and binding activities and apoptosis. Selected up-regulated differentially expressed genes in each group associated to protein, lipids, carbohydrate and chitin metabolism. Blood feeding and long-term starvation also caused genes differentially expressed in the defense response and antioxidant response. Finding the sequence information and expression pattern would be helpful in understanding molecular physiology of D. marginatus, and provides information for anti-tick vaccine and drug development.

2020-11-18 | GSE151667 | GEO

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