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Effect of theta toxin secreted by live S. typhimurium inside spheroids of lung cancer cell lines H460 and H1819

ABSTRACT: Effect of theta toxin secreted by live S. typhimurium inside spheroids of lung cancer cell lines H460 and H1819

PROVIDER: PRJNA866166 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR20830370_1.fastq.gz	Fastqsanger.gz
	SRR20830370_2.fastq.gz	Fastqsanger.gz
	SRR20830371_1.fastq.gz	Fastqsanger.gz
	SRR20830371_2.fastq.gz	Fastqsanger.gz
	SRR20830372_1.fastq.gz	Fastqsanger.gz

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Project description:BACKGROUND: Cancer stem-like cells were isolated from human H460 non-small cell lung cancer cells by limiting dilution assays and by their holoclone morphology, followed by assessment of their self-renewal capacity, tumor growth, vascularity, and tumor blood perfusion. H460 holoclones were used to implant H460 holoclone-derived tumors, which grew slower than parental H460 tumors, but displayed significant increases in microvessel density and tumor blood perfusion. Microarray analysis identified differentially regulated genes in the holoclone-derived tumors, of which many were associated with angiogenesis. The differentially regulated genes include several small leucine-rich proteoglycans that may modulate angiogenesis and serve as novel therapeutic targets for inhibiting cancer stem cell-driven angiogenesis.(Cancer Letters Vol 346, Issue 1, 28 April 2014, Pages 63M-bM-^@M-^S73; PMID: 24334139; PMCID: PMC3947657). Implanted tumors derived from H460 parental cells, or from each of four independent H460 holoclones, were implanted subcutaneously in scid immunodeficient mice. Tumors derived from the 4 holoclones (designated H460/2E1, H460/2H3, H460/3F1, and H460/2E7) were used for global transcriptome/microarray analysis in direct comparison to H460 tumors grown from parental H460 cells. For each H460 holoclone-derived tumor line or H460 parental cell-derived tumor, total RNA was prepared from n=7 to n=10 individual tumors and used to prepare two independent pools of tumor RNA (each pool comprised of RNA isolated n=3-5 tumors) for use in a two color microarray analysis. Tumor RNA pools were prepared by combining equal amounts of RNA from each individual tumor to minimize the impasct of inter-tumoral variation on gene expression profiles. All RNAs had an RNA integrity number >8.0, determined using an Agilent Bioanalyzer 2100 instrument. cDNAs transcribed from pools of RNA for each holoclone-derived tumor line and for each parental H460 cell-derived tumor pool, were labeled with Alexa 647 or Alexa 555 dyes in a fluorescent reverse pair (dye swap) design for competitive hybridization to Agilent Whole Human Genome Microarrays.

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Effect of theta toxin secreted by live S. typhimurium inside spheroids of lung cancer cell lines H460 and H1819

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