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Heat stress response in the cave nectar bat Eonycteris spelaea differs from that of Mus musculus

ABSTRACT: Heat stress response in the cave nectar bat Eonycteris spelaea differs from that of Mus musculus

PROVIDER: PRJNA1089609 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR28389600_1.fastq.gz	Fastqsanger.gz
	SRR28389600_2.fastq.gz	Fastqsanger.gz
	SRR28389601_1.fastq.gz	Fastqsanger.gz
	SRR28389601_2.fastq.gz	Fastqsanger.gz
	SRR28389602_1.fastq.gz	Fastqsanger.gz

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Heat stress response in the cave nectar bat Eonycteris spelaea differs from that of Mus musculus

Project description:Bats as the only flying mammals incur a high metabolic cost during extended powered flight, which results in febrile-like temperatures without injury. Herein, we investigate the in vivo heat shock response (HSR) in the cave nectar bat Eonycteris spelaea. We demonstrate that E. spelaea exhibits enhanced physiological heat resistance, marked by reduced lethality, tissue damage and serum corticosterone levels in comparison to mice upon heat challenge. Additionally, E. spelaea did not exhibit an acute transcriptional response observed heat stress in mice. Instead, bats displayed a delayed and non-canonical HSR that did not involve the activation of classical heat shock related genes and pathways. This altered response in E. spelaea is attributed to the elevated basal expression of heat shock proteins, which we demonstrate to be a common characteristic exhibited by bats from diverse sub-orders, families and diets. Taken together, we demonstrate a distinct HSR in E. spelaea relative to the conventional model organism, mouse, which may provide insights to understand novel regulatory targets and effector proteins that underlie the mammalian heat shock response.

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Transcriptomic profiling of bat immune responses (e. spelaea)

Project description:To examine the fundamental immunity in bats, particularly the status of their innate immune system in the basal healthy state, we profile Eonycteris spelaea bat tissue with Deep NGS coverage. This is coupled to a paired experiment where bats were stimulated in vivo with various PRR ligands to activate immune pathways.

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Exploring the genome and transcriptome of the cave nectar bat Eonycteris spelaea with PacBio long-read sequencing.

Project description:In the past two decades, bats have emerged as an important model system to study host-pathogen interactions. More recently, it has been shown that bats may also serve as a new and excellent model to study aging, inflammation, and cancer, among other important biological processes. The cave nectar bat or lesser dawn bat (Eonycteris spelaea) is known to be a reservoir for several viruses and intracellular bacteria. It is widely distributed throughout the tropics and subtropics from India to Southeast Asia and pollinates several plant species, including the culturally and economically important durian in the region. Here, we report the whole-genome and transcriptome sequencing, followed by subsequent de novo assembly, of the E. spelaea genome solely using the Pacific Biosciences (PacBio) long-read sequencing platform. The newly assembled E. spelaea genome is 1.97 Gb in length and consists of 4,470 sequences with a contig N50 of 8.0 Mb. Identified repeat elements covered 34.65% of the genome, and 20,640 unique protein-coding genes with 39,526 transcripts were annotated. We demonstrated that the PacBio long-read sequencing platform alone is sufficient to generate a comprehensive de novo assembled genome and transcriptome of an important bat species. These results will provide useful insights and act as a resource to expand our understanding of bat evolution, ecology, physiology, immunology, viral infection, and transmission dynamics.

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Single-cell transcriptome analysis of the in-vivo response to viral infection in the cave nectar bat Eonycteris spelaea

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Project description:Bats are unique mammals, exhibit distinctive life history traits and have unique immunological approaches to suppression of viral diseases upon infection. High-throughput next-generation sequencing has been used in characterizing the virome of different bat species. The cave nectar bat, Eonycteris spelaea, has a broad geographical range across Southeast Asia, India and southern China, however, little is known about their involvement in virus transmission. Here we investigate the diversity and abundance of viral communities from a colony of Eonycteris spelaea residing in Singapore. Our results detected 47 and 22 different virus families from bat fecal and urine samples, respectively. Among these, we identify a large number of virus families including Adenoviridae, Flaviviridae, Reoviridae, Papillomaviridae, Paramyxoviridae, Parvoviridae, Picornaviridae, and Polyomaviridae. In most cases, viral sequences from Eonycteris spelaea are genetically related to a group of bat viruses from other bat genera (e.g., Eidolon, Miniopterus, Rhinolophus and Rousettus). The results of this study improve our knowledge of the host range, spread and evolution of several important viral pathogens. More significantly, our findings provide a baseline to study the temporal patterns of virus shedding and how they correlate with bat phenological trends.

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Single-cell transcriptome analysis of the in-vivo response to viral infection in the cave nectar bat Eonycteris spelaea [Bulk RNA-seq]

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