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Adiponectin inhibits acquisition of the Lyme disease agent by ticks [Tick]

ABSTRACT: Adiponectin inhibits acquisition of the Lyme disease agent by ticks [Tick]

PROVIDER: PRJNA977247 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24758007_1.fastq.gz	Fastqsanger.gz
	SRR24758007_2.fastq.gz	Fastqsanger.gz
	SRR24758008_1.fastq.gz	Fastqsanger.gz
	SRR24758008_2.fastq.gz	Fastqsanger.gz
	SRR24758009_1.fastq.gz	Fastqsanger.gz

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Adiponectin inhibits acquisition of the Lyme disease agent by ticks [Tick]

Project description:Tick gut and salivary gland global gene expression change after feeding on adiponectin wildtype and knockout mice

2024-05-01 | GSE233660 | GEO

Tick Adiponectin Receptor-Mediated Phospholipid Metabolism Contributes to Borrelia burgdorferi Colonization

Project description:Adiponectin-mediated pathways contribute to mammalian homeostasis; however, little is known about adiponectin and adiponectin receptor signaling in arthropods. In this study, we demonstrate that Ixodes scapularis ticks have an adiponectin receptor-like protein (ISARL) but lack adiponectin, suggesting activation by alternative pathways. ISARL expression is significantly upregulated in the tick gut after Borrelia burgdorferi infection, suggesting that ISARL signaling may be co-opted by the Lyme disease agent. Consistent with this, RNA interference (RNAi)-mediated silencing of ISARL significantly reduced the B. burgdorferi burden in the tick. RNA-seq-based transcriptomics and RNAi assays demonstrate that ISARL-mediated phospholipid metabolism by phosphatidylserine synthase I is associated with B. burgdorferi survival. Furthermore, the tick complement C1q-like protein 3 interacts with ISARL, and B. burgdorferi facilitates this process. This study identifies a new tick metabolic pathway that is connected to the life cycle of the Lyme disease spirochete.

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Adiponectin in the mammalian host influences ticks' acquisition of the Lyme disease pathogen Borrelia

Project description:To understand the global gene expression profile at the tick bite site of adiponectin wildtype and knockout mice

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Adiponectin in the mammalian host influences ticks' acquisition of the Lyme disease pathogen Borrelia

Project description:Adiponectin in the mammalian host influences ticks' acquisition of the Lyme disease pathogen Borrelia

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Borrelia burgdorferi gene expression from inside its tick vector during a bloodmeal

Project description:Borrelia burgdorferi, the causative agent of Lyme disease, is transmitted to vertebrate hosts by Ixodes ticks. As it moves from tick to host, B. burgdorferi must adapt to survive in a vastly different environment. During the tick bloodmeal, which lasts several days, B. burgdorferi is primed for mammalian infection, growing increasingly virulent as it senses cues from its surroundings in the tick. This conditioning is dependent on key transcriptional regulators; however, the downstream transcriptional changes occurring inside of the tick that promote B. burgdorferi transmission and infection are poorly understood due to technical difficulties in sequencing the B. burgdorferi transcriptome from inside of ticks. We developed a protocol to enrich and sequence B. burgdorferi from inside the tick, and we measured global transcriptional changes occurring in feeding ticks. We identified 192 genes that change expression twofold over the course of the tick bloodmeal, which were predominantly located on the plasmids of the genome. The majority of the upregulated genes encode proteins found at the cell envelope or proteins of unknown function, including 45 upregulated genes encoding outer surface lipoproteins. These genes that increase during feeding are candidates for future functional studies, which can help identify new targets for methods that aim to control the spread of Lyme disease.

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Tick-borne Pathogens Induce Differential Expression of Genes Promoting Cell Survival and Host Resistence in Ixodes ricinus Cells

Project description:There has been an emergence and expansion of tick-borne diseases in Europe, Asia and North America in recent years, including Lyme disease, tick-borne encephalitis, and human anaplasmosis. The primary tick vectors implicated are hard ticks of the Ixodes genera. Although much is known about the host response to these bacterial and viral pathogens, there is limited knowledge of the cellular responses to infection within the tick vector. The bacterium Anaplasma phagocytophilum (A. phagocytophilum), is able to bypass apoptotic processes in ticks, enabling infection to proceed. However, the tick cellular responses to infection with the flaviviruses tick-borne encephalitis virus (TBEV) and louping ill virus (LIV), which cause tick-borne encephalitis and louping ill respectively, are less clear. Infection of an Ixodes ricinus (I. ricinus) tick cell line with the viruses LIV and TBEV, and the bacterium A. phagocytophilum, identified activation of common and distinct cellular pathways. In particular, commonly-upregulated genes included those that modulate apoptotic pathways (HSP70), putative anti-pathogen genes (FKBP and XBL1), and genes that influence the tick innate immune response, including selective activation of toll genes. These data provide an insight into potentially key genes involved in the tick cellular response to viral or bacterial infection.

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Project description:Tick-borne diseases (TBDs) are the most common illnesses transmitted by ticks, and the annual number of reported TBD cases continues to increase. The Asian longhorned tick, a vector associated with at least 30 human pathogens, is native to eastern Asia and recently reached the USA as an emerging disease threat. Newly identified tick-transmitted pathogens continue to be reported, raising concerns about how TBDs occur. Interestingly, tick can harbor pathogens without being affected themselves. For viral infections, ticks have their own immune systems that protect them from infection. Meanwhile, tick-borne viruses have evolved to avoid these defenses as they establish themselves within the vector. Here, we show in detail that infecting longhorned ticks with distinct arthropod-borne RNA viruses through two approaches natural blood feeding and injection, all induce the production of vsiRNAs. Dicer2-like homolog plays a role in regulating antiviral RNAi responses as knocking down of this gene enhanced viral replication. Furthermore, we demonstrate that tick antiviral RNAi responses are inhibited through expression heterologous VSR proteins in recombinant SINV. We identify both the virus and tick factors are critical components to understanding TBDs. Importantly, our study introduces a novel, in vivo virus-vector-mouse model system for exploring TBDs in the future.

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Early immunologic events at the tick-host interface

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