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Aedes aegypti (Aag2 cells) & Aedes albopictus (C6/36 cells)

ABSTRACT: small RNA sequencing reads of Aedes mosquito cell lines Aag2 and C6/36

PROVIDER: PRJNA1201772 | ENA |

REPOSITORIES: ENA

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Dataset's files

Source:

			Action	DRS
	SRR31809931.fastq.gz	Fastqsanger.gz
	SRR31809932.fastq.gz	Fastqsanger.gz
	SRR31809933.fastq.gz	Fastqsanger.gz
	SRR31809934.fastq.gz	Fastqsanger.gz

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Transcription inhibition in Aedes Albopictus C6/36 cells

Project description:To determine codon optimality in Aedes Albopictus C6/36 cells, we blocked transcription using three independent transcription inhibitors (5,6-Dichlorobenzimidazole 1-β-D-ribofuranoside (DRB), Flavopiridol and Triptolide) and measured the RNA level at 6 hours post treatment using RNA-seq.

2024-07-23 | GSE234878 | GEO

wMelpop strain of Wolbachia infection of Aedes albopictus mosquito C6/36 cells modulates dengue virus-induced host cellular transcripts and induces critical sequence alterations in dengue viral genome

Project description:The dengue virus (DENV) cause frequent epidemics infecting ~390 million people annually in over 100 countries. There are no approved vaccines or antiviral drugs for treatment of infected patients. However, there is a novel approach to control transmission of DENV by the mosquito vectors, Aedes aegypti and Ae. albopictus, using Wolbachia symbiont. The wMelPop strain of Wolbachia suppresses DENV transmission and shortens the mosquito life span. However, the underlying mechanism is poorly understood. To clarify this mechanism, either naïve Ae. albopictus (C6/36) or wMelPop-C6/36 cells were infected with DENV2. Analysis of host transcript profiles by RNAseq revealed that the presence of wMelPop had profound effects on mosquito host cell transcription in response to DENV2 infection. The viral RNA evolved from wMelPop-C6/36 contained low frequency mutations (~25%) within the coding region of transmembrane domain-1 (TMD1) of E protein. Mutations with >97 % frequencies were distributed within other regions of E, NS5 RNA-dependent RNA polymerase (NS5POL) domain, the TMDs of NS2A, NS2B, and NS4B. Moreover, while DENV2-infected naïve C6/36 cells showed syncytia formation, DENV2-infected wMelPop-C6/36 cells did not. The Wolbachia-induced mutant DENV2 can readily infect and replicate in naïve C6/36 cells; whereas, in the mutant DENV2- infected BHK-21 or Vero cells, the virus replication was delayed. In LLC-MK2 cells, the mutant failed to produce plaques. Additionally, in BHK-21 cells, many mutations in the viral genome reverted to WT and compensatory mutations in NS3 gene appeared. Our results suggest that wMelPop impacts significantly the interactions of DENV2 with mosquito and mammalian host cells.

2019-02-25 | GSE125580 | GEO

Transcription inhibition in Aedes Albopictus C6/36 cells

Project description:Transcription inhibition in Aedes Albopictus C6/36 cells

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Aedes albopictus strain:HT | isolate:Larva Mosquito Asian Tiger | cultivar:C6/36

Project description:Aedes albopictus strain:HT | isolate:Larva Mosquito Asian Tiger | cultivar:C6/36 Transcriptome or Gene expression

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Aedes albopictus cultivar:C6/36

Project description:The dengue virus NS1protein interacts with DIDO1 to promote flavivirus replication in mosquito cells.

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C6/36 Aedes albopictus cells have a dysfunctional antiviral RNA interference response.

Project description:Mosquitoes rely on RNA interference (RNAi) as their primary defense against viral infections. To this end, the combination of RNAi and invertebrate cell culture systems has become an invaluable tool in studying virus-vector interactions. Nevertheless, a recent study failed to detect an active RNAi response to West Nile virus (WNV) infection in C6/36 (Aedes albopictus) cells, a mosquito cell line frequently used to study arthropod-borne viruses (arboviruses). Therefore, we sought to determine if WNV actively evades the host's RNAi response or if C6/36 cells have a dysfunctional RNAi pathway. C6/36 and Drosophila melanogaster S2 cells were infected with WNV (Flaviviridae), Sindbis virus (SINV, Togaviridae) and La Crosse virus (LACV, Bunyaviridae) and total RNA recovered from cell lysates. Small RNA (sRNA) libraries were constructed and subjected to high-throughput sequencing. In S2 cells, virus-derived small interfering RNAs (viRNAs) from all three viruses were predominantly 21 nt in length, a hallmark of the RNAi pathway. However, in C6/36 cells, viRNAs were primarily 17 nt in length from WNV infected cells and 26-27 nt in length in SINV and LACV infected cells. Furthermore, the origin (positive or negative viral strand) and distribution (position along viral genome) of S2 cell generated viRNA populations was consistent with previously published studies, but the profile of sRNAs isolated from C6/36 cells was altered. In total, these results suggest that C6/36 cells lack a functional antiviral RNAi response. These findings are analogous to the type-I interferon deficiency described in Vero (African green monkey kidney) cells and suggest that C6/36 cells may fail to accurately model mosquito-arbovirus interactions at the molecular level.

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Quantitative proteomic analysis of ZIKV infected C6/36 cells

Project description:An iTRAQ-based quantitative proteomic analysis of ZIKV infected Aedes albopictus C6/36 cells was performed to investigate host proteins involved in ZIKV infection process. A total of 3,544 host proteins were quantified, with 200 being differentially regulated. Bioinformatics analysis on regulated host proteins highlights several ZIKV infection regulated biological processes.

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Analysis of the virus propagation profile of 14 dengue virus isolates in Aedes albopictus C6/36 cells.

Project description:ObjectiveThe mosquito transmitted RNA virus dengue virus (DENV) shows significant variation as a consequence of the lack of proofreading activity of the RNA-dependent RNA polymerase that synthesizes new virus genomes. How this variation affects DENV replication, and how this in turn impacts drug development remains largely unknown. Given the technical limitations in working with large numbers of isolates few studies have sought to investigate this area. This study used a panel of 14 DENV isolates of different serotypes and origins to determine how much virus replication in Aedes albopictus C6/36 cells was affected by DENV variability.ResultsThe results showed that there was considerable variation, with peak titers ranging from 6Log10 to 8Log10, and maximum titer being reached from day 3 to day 9 post infection. While strains from DENV 1 and 4 serotypes showed considerable uniformity, DENV 2 and 3 strains showed much greater variation. Overall, these results show that serotype specific strain variation can have a significant impact on DENV replication, suggesting that studies either investigating DENV pathogenesis or developing drug therapeutics should consider the contribution of DENV variability.

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Aedes aegypti (Aag2) Cells: Control (CTR) vs. Heme-incubated / Control vs. Paraquat-incubated

Project description:In order to study heme-induced global transcriptional changes, we performed a transcriptome-wide analysis of heme influence on the A. aegypti cell line Aag2. As heme-mediated effects on gene expression are thought to be related to oxidative stress, we compared the transcriptional profiles of Aag2 cells challenged with either 50 µM heme or 100 µM of the ROS inducer paraquat, using whole genome microarrays.

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