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Transcriptome Analysis of Plasmodium CSP stable expressing or control A549 cells

ABSTRACT: Transcriptome Analysis of Plasmodium CSP stable expressing or control A549 cells

PROVIDER: PRJNA782537 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR16999855_1.fastq.gz	Fastqsanger.gz
	SRR16999855_2.fastq.gz	Fastqsanger.gz
	SRR16999856_1.fastq.gz	Fastqsanger.gz
	SRR16999856_2.fastq.gz	Fastqsanger.gz
	SRR16999857_1.fastq.gz	Fastqsanger.gz

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Project description:To investigate the potential effect of overexpression of Plasmodium yoelii cirumsporozoite protein on A549 cells. Control and CSP stable expression A549 cells were constructed by infected with pLenti vector and pLenti-CSP plasmids and cultured with HBSS for 24h. Total RNA from Control and CSP stable expression A549 cells was extracted using the mirVana miRNA Isolation Kit (Ambion) following the manufacturer’s protocol. RNA integrity was evaluated using the Agilent 2100 Bioanalyzer (Agilent Technologies, Santa Clara, CA, USA). The samples with RNA Integrity Number (RIN) ≥ 7 were subjected to the subsequent analysis. The libraries were constructed using TruSeq Stranded mRNA LTSample Prep Kit (Illumina, San Diego, CA, USA) according to the manufacturer’s instructions. Then these libraries were sequenced on the Illumina sequencing platform (illumina novaseq6000) and 125bp/150bp paired-end reads were generated.

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Project description:Transcriptional profiling of the competence-stimulating peptide (CSP) response in Streptococcus mutans of FACS-separated subpopulations and mixed cells of a clonal culture. CSP-mediated competence development in S. mutans is a transient and biphasic process since only a subpopulation induces expression of ComX in the presence of CSP and activation of the DNA uptake machinery in this fraction shuts down ~3-4 hours post induction. Here we combine, for the first time in bacteria to our knowledge, flow cytometric sorting of cells and subpopulation-specific transcriptome analysis of both the competent and non-competent fractions of CSP-treated S. mutans cells. Sorting was guided by a ComX-GFP reporter and the transcriptome analysis demonstrated the successful combination of both methods because a strong enrichment of transcripts for comX and its downstream genes was achieved. Three two-component systems were expressed in the competent fraction, among them ComDE. Moreover, the recently identified regulator system ComR/S was expressed exclusively in the competent fraction. By contrast, expression of bacteriocin-related genes was at the same level in all cells. GFP reporter strains for ComE and mutacin V confirmed this expression pattern on the single cell level. Fluorescence microscopy revealed that some ComX-expressing cells committed autolysis in an early stage of competence initiation. In viable ComX-expressing cells, uptake of DNA could be shown on the single cell level. This study demonstrates that all cells in the population respond to CSP through activation of bacteriocin-related genes but that two subpopulations segregate, one becoming competent and another one that lyses, resulting in intrapopulation diversity of the clonal culture. Two conditions: induced and not induced with CSP. Three induced cell populations: competent subpopulation, incompetent subpopulation, all cells. Two biological replicates each population.

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