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Real-time quantitative PCR analysis of hormone-receptor-negative primary breast tumors

ABSTRACT: Total RNA was extracted from FFPE samples of 139 chemotherapy-naïve hormone-receptor-negative breast cancers pooled from three sample sources and assayed for the expression of 21 genes within two previously reported microarray-derived prognostic signatures in 6 RT-PCR multiplexes. RT-PCR gene expression profiling. Total RNA was extracted from 10 micron FFPE sections, and expression levels of the 21 genes of interest plus two reference genes were quantified with 6 multiplex RT-PCR TaqMan assays.

ORGANISM(S): Homo sapiens

SUBMITTER: Yau C

PROVIDER: S-ECPF-GEOD-51630 | biostudies-other | 2013

REPOSITORIES: biostudies-other

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Real-time quantitative PCR analysis of hormone-receptor-negative primary breast tumors

Project description:Total RNA was extracted from FFPE samples of 139 chemotherapy-naïve hormone-receptor-negative breast cancers pooled from three sample sources and assayed for the expression of 21 genes within two previously reported microarray-derived prognostic signatures in 6 RT-PCR multiplexes.

2013-10-25 | GSE51630 | GEO

Real-time quantitative PCR analysis of hormone-receptor-negative primary breast tumors

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Quantitative real-time PCR protocol for analysis of nuclear receptor signaling pathways.

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Real-time quantitative PCR analysis of human astrocytomas

Project description:Pediatric astrocytomas, a leading cause of death associated with cancer, are the most common primary central nervous system tumors found in children. Most studies of these tumors focus on adults, not children. We examined the global protein and microRNAs expression pattern by 2D SDS-PAGE, mass spectrometry (MALDI-TOF) and RT2 miRNA PCR Array System. MicroRNAs analysis revealed for the first time novel microRNAs involved in astrocytomas biology. Interestingly, miR-138 and miR-145 down-regulation appear to be associated with protein over-expression of vimentin and Bax, respectively. In conclusion, our results show that novel proteins and microRNAs altered on pediatric astrocytoma could serve as biomarkers to distinguish between astrocytoma grades. Astrocytoma samples were colected from patients and total RNA isolation (30 mg of tissue) was performed using the TRIzol® protocol (Invitrogen, USA) according to the manufacturer′s instructions. Samples were analyzed using SA Biosciences RT2 miRNA PCRArray System to determied the miRNA expression between control samples and tumors RT2 miRNA PCR Array. Eigth tumor samples and two control tissue (including two control tissue replicates) were used as indicated in the sumary. A total of 3ug of RNA from each tumr samples and control tissue were placed in the PCR Array

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Project description:Pediatric astrocytomas, a leading cause of death associated with cancer, are the most common primary central nervous system tumors found in children. Most studies of these tumors focus on adults, not children. We examined the global protein and microRNAs expression pattern by 2D SDS-PAGE, mass spectrometry (MALDI-TOF) and RT2 miRNA PCR Array System. MicroRNAs analysis revealed for the first time novel microRNAs involved in astrocytomas biology. Interestingly, miR-138 and miR-145 down-regulation appear to be associated with protein over-expression of vimentin and Bax, respectively. In conclusion, our results show that novel proteins and microRNAs altered on pediatric astrocytoma could serve as biomarkers to distinguish between astrocytoma grades. Astrocytoma samples were colected from patients and total RNA isolation (30 mg of tissue) was performed using the TRIzolM-BM-. protocol (Invitrogen, USA) according to the manufacturerM-bM-^@M-2s instructions. Samples were analyzed using SA Biosciences RT2 miRNA PCRArray System to determied the miRNA expression between control samples and tumors RT2 miRNA PCR Array. Eigth tumor samples and two control tissue (including two control tissue replicates) were used as indicated in the sumary. A total of 3ug of RNA from each tumr samples and control tissue were placed in the PCR Array

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