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Gene expression profiling of melanoma cells following intracardiac injection in NOD-SCID mice: a comprehensive in vivo model

ABSTRACT: To evaluate the in vivo metastatic activity of five different melanoma cell lines (LCP, LCM, WM266, SKMel28 and A375), we completed intra-cardiac injection of 1x106 luminescent cells in NOD-SCID mice. All melanoma cell lines demonstrated a metastatic behaviour following intra-cardiac injection with a variable attitude to produce bone and visceral metastasis. Mice injected with LCP, LCM and WM266 showed a lower total metastatic tumor burden and increased survival (low metastatic) as compared to A375 and SK-Mel28 (high metastatic). Melanoma cell lines were profiled for gene expression (RNAseq) of 118 genes notably involved in cancer progression and metastasis.

INSTRUMENT(S): AB 310 Genetic Analyzer

ORGANISM(S): Homo sapiens

SUBMITTER: Raffaele Palmirotta

PROVIDER: E-MTAB-16710 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:We addressed the integrated analysis of mRNA and miRNA expression levels of Tg6799 AD model mice at 4 month and 8 months of age. Total 8 gene cluster modules for co-expression network were predicted from transcriptome data and 6 modules were show relation with AD or aging. We constructed early stage AD network using data integration between mRNA and miRNA profiles and predicted miRNAs strongly involved in module regulation. We found that ARRDC3 showed AD mutation dependent changes of expression and was related metabolic dysfunction in early stage AD. These results demonstrate that candidate genes on the simultaneous profiling of mRNA and miRNA expressions in genome wide can be used for the understanding of non-coding RNA related gene expression in early stage AD. We suggested that our results could be future candidate to be developed as early biomarkers in progressive AD pathology. This result can be used for the further application in neurodegenerative diseases. Tg6799 transgenic mice were purchased from The Jackson Laboratory (USA) and were housed under a 12h light-dark cycle with free access to food and water. Female Tg6799 mice are maintained until 4 months and 8 months of age (for littermate control: LM and mutant subjects: MT). RNA samples were isolated from hippocampus of mice using TRI-Reagent (Sigma-Aldrich, St. Louis, MO) according to the manufacturer’s instructions. Gene expression was analyzed with GeneChip® Mouse Genome 430 2.0 Arrays (Affymetrix, Santa Clara, CA), which is comprised of over 45,000 probe sets representing approximately 28,700 well-characterized mouse genes. The Ion Total RNA-Seq Kit v2 (Lifetechnologies, USA) was used for the preparation of micro RNA libraries according to the manufacturer's instructions. Total numbers of subject used are as followed: 1) LM 4 months : MT 4 months : LM 8 months : MT 8 months (2:4:2:4) for screening mRMA and miRNA, 2) LM 4 months : MT 4 months : LM 8 months : MT 8 months (4:4:4:4) for expression verification.

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Gene expression profiling of melanoma cells following intracardiac injection in NOD-SCID mice: a comprehensive in vivo model

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