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Plasma profiling of miRNAs in human specimens from osteosarcoma patients.

ABSTRACT: Osteosarcoma (OS) is the primary bone tumor in children and young adults. Currently, there are no reliable, non-invasive biological markers to detect the presence or progression of disease, assess therapy response, or provide upfront prognostic insights. Using a qPCR-based platform that analyzes more than 750 miRNAs, we analyzed control and diseased-associated plasma from human cases of OS to identify a profile of differentially expressed miRNAs.

ORGANISM(S): Homo sapiens

PROVIDER: GSE65071 | GEO | 2015/01/17

SECONDARY ACCESSION(S): PRJNA272827

REPOSITORIES: GEO

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Plasma profiling of miRNAs in human specimens from osteosarcoma patients.

Project description:Osteosarcoma (OS) is the primary bone tumor in children and young adults. Currently, there are no reliable, non-invasive biological markers to detect the presence or progression of disease, assess therapy response, or provide upfront prognostic insights. Using a qPCR-based platform that analyzes more than 750 miRNAs, we analyzed control and diseased-associated plasma from human cases of OS to identify a profile of differentially expressed miRNAs. Comprehensive miRNA expression profiling was completed using the Exiqon miRNome platform (human panels I+II, V3) on 20 disease samples (10 localized, 10 metastatic) and 15 healthy controls.

2015-01-17 | E-GEOD-65071 | biostudies-arrayexpress

Plasma profiling of miRNAs in mouse model of osteosarcoma.

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Plasma profiling of miRNAs in mouse model of osteosarcoma.

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Osteosarcoma microaberrations

Project description:Background: Osteosarcoma (OS) is a very aggressive bone tumor characterized by highly abnormal complex karyotypes. With the improved resolution offered by array comparative genomic hybridization (array CGH) platforms, it is possible to readily detect cryptic microaberrations in genomic DNA. The identification of these microaberrations in genetic syndromes is currently the focus of many array CGH studies, but there have been no analyses to date documenting the occurrence of microaberrations in tumors. Results: In this study we utilized high-resolution oligonucleotide array CGH to identify novel microaberrations under ~750 kb in four OS-derived cell lines: U-2 OS, HOS, MG-63 and SAOS-2. Comparative analysis of these alterations showed that SAOS-2 harbored the most microaberrations at 17, followed by MG-63 with 11, HOS with 9 and U-2 OS with 6. SAOS-2, which has a TP53 mutation, exhibited the highest level of chromosomal instability in previous studies by our group; whereas U-2 OS, which has wild-type p53 status, exhibited the least instability. A consensus region of gain at 5p15.33 was detected in three of the four OS-derived cell lines (HOS, MG-63 and SAOS-2) by aCGH. Of these consensus gains, one was a microaberration of 500 kb in SAOS-2, and confirmed by fluorescence in situ hybridization analysis. It should be noted that this microaberration is immediately telomeric to the TERT gene, which also showed gain. TERT is correlated with increased tumor aggression, as well as decreased progression free survival in OS patients. Keywords: comparative genomic hybridization (array CGH)

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the role of hsa_circ_0000073 in Osteosarcoma

Project description:Osteosarcoma (OS) is one of the leading causes of cancer mortality in children and teenagers. Patients with OS have been shown to have a poor prognosis and may suffer from potential distant metastasis. Emerging evidence has revealed that circular RNAs (circRNAs) are involved in OS progression. In this paper, we aim to explore the function of hsa_circ_0000073 in the progression of OS. OS cells transfected with sh‐NC or sh-circ_0000073 were enrolled in this study.We used microarray analysis to identify the mRNA expression in the cells.

2021-08-24 | GSE176373 | GEO

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