Similar Datasets
Project description:Identify miRNAs enriched or overexpressed in melanoma-derived exosomes compared to melanoma cells. We analyzed the 2,578 human miRNAs located in the array according to two ways. The first one identified the differentially expressed miRNAs between melanoma-derived exosomes and their parent cells. In this way, we found 198 miRNAs up-regulated in melanoma cell lines compared to their exosomes and 206 miRNAs up-regulated in exosomes compared to their donor cells. The second way of analysis identifies the most expressed miRNAs in the melanoma-derived exosomes without assumption about their expression in parent cells. We defined two criteria; the first one is a RMA (Robust Multi-Array Average, a good alternative to gene expression value) above 5, corresponding to the mean expression level of the array and a SD ≤ 0.2 between all samples to discover miRNAs expressed uniformly between melanoma-derived exosomes M113 and M117. We identified 44 miRNAs under these criteria.
2019-01-15 | GSE125030 | GEO
Project description:RNA data from melanoma-derived exosomes and melanoma cell lines
| PRJNA590140 | ENA
Project description:miRNA data from melanoma-derived exosomes and melanoma cell lines
| PRJNA514998 | ENA
Project description:Exosomes are small membraneous vesicles secreted into body fluids by tumors. Tumor exosomes contain intact and functional mRNAs, small RNAs (including miRNAs), and proteins that can alter the cellular environment to favor tumor growth. Further exploration into the molecular profiling of exosomes may increase our understanding of their roles in melanoma progression in vivo, and may have potential application in biomarker studies. In the present study, we used mRNA array profiling to identify thousands of exosomal mRNAs associated with melanoma progression and metastasis. Similarly, miRNA array profiling identified specific miRNAs, such as hsa-miR-31, -185, and -34b, involved in melanoma invasion. Our results indicate that melanoma-derived exosomes have unique gene expression signatures and miRNA profiles that may have important functions in melanoma metastasis and progression. Total RNA from cells and exosomes were isolated using mirVana total RNA isolation kit according to the manufacturer’s guidelines. RNA was quantified using Nanodrop ND-1000. The integrity of these total RNAs was assessed using Agilent 2100 Bioanalyzer. Total high-quality RNA was converted to cDNA, transcribed and labelled, and then hybridized to human HG-U133 plus 2 arrays (Affymetrix) then scanned according to the standard protocol recommended by Affymetrix. Two different RNA preparations from two cell lines and their exosomes were used.
2012-10-10 | E-GEOD-35388 | biostudies-arrayexpress
Project description:Exosomes are small membraneous vesicles secreted into body fluids by tumors. Tumor exosomes contain intact and functional mRNAs, small RNAs (including miRNAs), and proteins that can alter the cellular environment to favor tumor growth. Further exploration into the molecular profiling of exosomes may increase our understanding of their roles in melanoma progression in vivo, and may have potential application in biomarker studies. In the present study, we used mRNA array profiling to identify thousands of exosomal mRNAs associated with melanoma progression and metastasis. Similarly, miRNA array profiling identified specific miRNAs, such as hsa-miR-31, -185, and -34b, involved in melanoma invasion. Our results indicate that melanoma-derived exosomes have unique gene expression signatures and miRNA profiles that may have important functions in melanoma metastasis and progression. Total RNA from cells and exosomes were isolated using mirVana total RNA isolation kit according to the manufacturer’s guidelines. RNA was quantified using Nanodrop ND-1000. The integrity of these total RNAs was assessed using Agilent 2100 Bioanalyzer. Total high-quality RNA was labelled. The miRNA array profiling was performed by using the Affymetrix GeneChip miRNA Array 1.0. Two different RNA preparations from two cell lines and their exosomes were used, except that only one RNA preparation was used for HEMa-LP exosome miRNA array. Due to the limited number of passages (approximately 10), adequate exosomal RNA and proteins from HEMa-LP cells for multiple analyses was not available.
2012-10-10 | E-GEOD-35387 | biostudies-arrayexpress
Project description:Exosomes are small membraneous vesicles secreted into body fluids by tumors. Tumor exosomes contain intact and functional mRNAs, small RNAs (including miRNAs), and proteins that can alter the cellular environment to favor tumor growth. Further exploration into the molecular profiling of exosomes may increase our understanding of their roles in melanoma progression in vivo, and may have potential application in biomarker studies. In the present study, we used mRNA array profiling to identify thousands of exosomal mRNAs associated with melanoma progression and metastasis. Similarly, miRNA array profiling identified specific miRNAs, such as hsa-miR-31, -185, and -34b, involved in melanoma invasion. Our results indicate that melanoma-derived exosomes have unique gene expression signatures and miRNA profiles that may have important functions in melanoma metastasis and progression.
2012-10-10 | GSE35388 | GEO
Project description:Exosomes are small membraneous vesicles secreted into body fluids by tumors. Tumor exosomes contain intact and functional mRNAs, small RNAs (including miRNAs), and proteins that can alter the cellular environment to favor tumor growth. Further exploration into the molecular profiling of exosomes may increase our understanding of their roles in melanoma progression in vivo, and may have potential application in biomarker studies. In the present study, we used mRNA array profiling to identify thousands of exosomal mRNAs associated with melanoma progression and metastasis. Similarly, miRNA array profiling identified specific miRNAs, such as hsa-miR-31, -185, and -34b, involved in melanoma invasion. Our results indicate that melanoma-derived exosomes have unique gene expression signatures and miRNA profiles that may have important functions in melanoma metastasis and progression.
2012-10-10 | GSE35387 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE35387: Expression data from normal melanocyte, melanoma cells and their exosomes (microRNA) GSE35388: Expression data from normal melanocyte, melanoma cells and their exosomes (mRNA) Refer to individual Series
2012-10-10 | E-GEOD-35389 | biostudies-arrayexpress
Project description:Tumor-derived exosomes are emerging as mediators of tumorigenesis with a tissue-specific address and message. We explored the function of melanoma-derived exosomes in formation of primary tumors and metastatic progression in both murine models and patients. Whereas exosomes from highly metastatic melanoma cells increased the metastatic behavior of primary tumor cells by educating bone marrow (BM) progenitor cells via the MET receptor, exosomes from low metastatic melanoma cells did not alter the incidence of metastases. Melanoma-derived exosomes induced vascular leakiness at pre-metastatic sites, and reprogrammed BM progenitor cells towards a pro-vasculogenic phenotype (c-Kit+Tie2+MET+). Reducing MET expression in tumor-derived exosomes diminished the pro-metastatic behavior of BM cells. Importantly, MET expression was upregulated in circulating BM progenitor cells (CD45-CD117low and CD45-CD117lowTIE2+) isolated from stage III and stage IV melanoma patients. Rab1a, Rab5b, Rab7, and Rab27a were highly expressed in melanoma and Rab27a RNA interference decreased exosome production and/or soluble angiogenic factors in melanoma cells, thereby preventing mobilization of BM progenitor cells, tumor growth and metastasis. Finally, we identified a melanoma signature in exosomes isolated from metastatic melanoma patients, comprised of TYRP2, VLA-4, Hsp70, an Hsp90 isoform and MET oncoprotein, which together with Rab proteins, appear to represent exosome-specific proteins with prognostic potential, and may provide new therapeutic targets. Identification of molecular finger associated to exosome effects in metastatic organs Microarray analysis of genes differentially expressed in the lungs 24 and 48 hours after B16-F10 exosome tail vein injection compared to control.
2012-05-26 | E-GEOD-36584 | biostudies-arrayexpress
Project description:In order to study the influence of melanoma-derived exosomes in the lymphatic vasculature within the lymph nodes, we have profile the transcriptional changes occurring in human lymphatic endothelial cells treated with melanoma-secreted exosomes or with the conditioned medium from melanoma cells depleted of exosomes.
2021-07-16 | GSE135187 | GEO