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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Differential expression of miRNAs in Retinoblastoma cells (Y79) in response to anti-HMGA2 siRNA treatment

ABSTRACT: The main objective of the study is to identify the de-regulated miRNAs in association with HMGA2 (oncogene) in the Retinoblastoma tumorus. The present experiment was carried out using Y79 (Retinoblastoma cell line), as the invitro model of Retinoblastoma tumor. The HMGA2 transcripts were silenced using siRNA and the post-silenced RB cells (at the end of 48 hours) were subjected to miRNA profiling using agilent platform.The key miRNAs de-regulated in this experiment has been validated using qRT-PCR and further their role has been evaluated by addition of specific antagomirs in RB cell lines (Y79 and Weri Rb 1). Agilent one-color experiment,Organism: Homo sapiens ,Agilent Human miRNA 8x15k Arrays AMADID: 021827 [Agilent miRNA labeling reagent and Hybridization Kit Cat # 5190-0408] RB cells (Y79) treated with anti-HMGA2 siRNA or with control

ORGANISM(S): Homo sapiens

SUBMITTER: Genotypic technology

PROVIDER: E-GEOD-51696 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Differential expression of miRNAs in Retinoblastoma cells (Y79) in response to anti-HMGA2 siRNA treatment

Project description:The main objective of the study is to identify the de-regulated miRNAs in association with HMGA2 (oncogene) in the Retinoblastoma tumorus. The present experiment was carried out using Y79 (Retinoblastoma cell line), as the invitro model of Retinoblastoma tumor. The HMGA2 transcripts were silenced using siRNA and the post-silenced RB cells (at the end of 48 hours) were subjected to miRNA profiling using agilent platform.The key miRNAs de-regulated in this experiment has been validated using qRT-PCR and further their role has been evaluated by addition of specific antagomirs in RB cell lines (Y79 and Weri Rb 1).

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Y79 retinoblastoma cells: control vs. curcumin treated

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Differential gene expression profile of y79 retinoblastoma cells in response to Anti - HMGA2 siRNA treatment

Project description:The differential gene expression study was conducted in the Anti - HMGA2 siRNA treated Retinoblastoma cell (Y79). The transient transfection in Y79 cells were performed using Anti-HMGA2 siRNA . The concentration and the time of incubation for the transfection was optimised to increase the silencing efficiency and reduce the off -target effects. After 48 hours of transfection the cells were collected and the whole genome cDNA microarray was performed to interpret the differential gene expression regulated by HMGA2 in Y79 cells. The results of the microarray data has been validated. One-color experiment,Organism: Human , Custom Whole Genome Human 8x60k designed by Genotypic Technology Pvt. Ltd. (Agilent-027114), Labeling kit: Agilent Quick-Amp labeling Kit (p/n5190-0442)

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Investigation of miRNA expression patterns in Y79 cells

Project description:We aimed to investigate the miRNA expression patterns in Y79 cells, which are from a representative retinoblastoma cell line. We prepared 3 independent sets of cell lysates of Y79 cells in normal culture conditions. Total RNA was prepared from each set of cell lysates using Trizol reagent.

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Differential gene expression profile of y79 retinoblastoma cells in response to Anti - HMGA2 siRNA treatment

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Nucleolin-aptamer therapy in retinoblastoma: molecular changes and mass spectrometry–based imaging

Project description:Retinoblastoma (RB) is an intraocular childhood tumor which, if left untreated, leads to blindness and mortality. Nucleolin (NCL) protein which is differentially expressed on the tumor cell surface, binds ligands and regulates carcinogenesis and angiogenesis. We found that NCL is over expressed in RB tumor tissues and cell lines compared to normal retina. We studied the effect of nucleolin-aptamer (NCL-APT) to reduce proliferation in RB tumor cells. Aptamer treatment on the RB cell lines (Y79 and WERI-Rb1) led to significant inhibition of cell proliferation. Locked nucleic acid (LNA) modified NCL-APT administered subcutaneously (s.c.) near tumor or intraperitoneally (i.p.) in Y79 xenografted nude mice resulted in 26 and 65% of tumor growth inhibition, respectively. Downregulation of inhibitor of apoptosis proteins, tumor miRNA-18a, altered serum cytokines, and serum miRNA-18a levels were observed upon NCL-APT treatment. Desorption electrospray ionization mass spectrometry (DESI MS)-based imaging of cell lines and tumor tissues revealed changes in phosphatidylcholines levels upon treatment. Thus, our study provides proof of concept illustrating NCL-APT-based targeted therapeutic strategy and use of DESI MS-based lipid imaging in monitoring therapeutic responses in RB.

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