摘要:
A method and system for extracting data signals from a scanned image resulting from optical, radiometric, or other types of analysis of a molecular array. The positions of corner features are first located. Then, an initial feature coordinate grid is determined from the positions of the corner features. A refined feature coordinate grid is then calculated based on the positions of strong features, and is used to identify the positions of weak features and the positions of the local background regions surrounding all features. Finally, signal intensity values are extracted from the features and their respective local background regions in the scanned image, and background-subtracted signal intensity values, background-subtracted and normalized signal intensity ratios, and variability information and confidence intervals are determined based on the extracted values.
摘要:
A method and system for extracting data signals from a scanned image resulting from optical, radiometric, or other types of analysis of a molecular array. The positions of corner features are first located. Then, an initial feature coordinate grid is determined from the positions of the corner features. A refined feature coordinate grid is then calculated based on the positions of strong features, and is used to identify the positions of weak features and the positions of the local background regions surrounding all features. Finally, signal intensity values are extracted from the features and their respective local background regions in the scanned image, and background-subtracted signal intensity values, background-subtracted and normalized signal intensity ratios, and variability information and confidence intervals are determined based on the extracted values.
摘要:
Systems and methods for displaying gene- and/or protein-related data with respect to chromosome maps at locations identifying relevant positioning of the genes with which the gene- and/or protein related data are associated. Multiple experiments may be plotted onto the display adjacent one or more chromosome maps. Automatic extraction of genomic location, based on accession numbers or other unique identifiers and cross connection with expression data is provided. Statistical assessments of correlations between expression and genome localization may be performed. Zooming capabilities, thumbnail/fullview toggling, browsability and linked data may be included as features of the visualization systems described.
摘要:
Various embodiments of the present invention determine a zero point, or centralization constant ζ, for an array-based comparative genomic hybridization (“aCGH”) data set by identifying a zero-point value, or centralization constant ζ, that, when used in an aberration-calling analysis of the aCGH data, results in the fewest number of array-probe-complementary genomic sequences identified as having abnormal copy numbers with respect to a control genome, or, in other words, results in the greatest number of array-probe-complementary genomic sequences identified as having normal copy numbers. In one embodiment, interval-based analysis of an aCGH data set may be carried out using a range of putative zero-point values, and the zero-point value for which the maximum number of genomic sequences are determined to have normal copy numbers may then be selected.
摘要:
The overexpression of certain marker genes including Wnt5a has been found useful in the identification of more aggressive forms of malignant melanoma. Therefore, the overexpression of these genes in tumor samples of malignant melanoma may be useful in the diagnosis, profiling, and treatment of patients suffering from this disease. Inhibitors of Wnt5a activity may be useful in the treatment of aggressive forms of malignant melanoma. Inhibition of Wnt5a activity may be effected by any method including anti-sense therapy, gene therapy, and pharmaceutical intervention.
摘要:
Embodiments of the present invention include methods and systems for analysis of comparative genomic hybridization (“CGH”) data, including CGH data obtained from microarray experiments.
摘要:
Methods and compositions for detecting copy number variations between nucleic acid samples are provided. Also provided are kits for practicing methods in accordance with the invention.
摘要:
The present invention provides polynucleotides and polypeptides (VECSM polynucleotides and polypeptides) that are differentially expressed in vascular endothelial cells. The invention further provides a variety of compositions, diagnostic, and therapeutic methods based on identification of these markers. In particular, the invention provides a targeting agent linked to a functional moiety, wherein the functional moiety can comprise any of a number of different agents, including imaging agents, cytotoxic agents, and stimulators or inhibitors of angiogenesis.
摘要:
Methods, systems and computer readable media for identifying a high-scoring, significantly altered genomic-continuous submatrix, wherein each genomic-continuous submatrix contains a subset of a set of genes measured across a set of samples to generate a DNA copy number data matrix and a gene expression data matrix. The subset of the genes is a genomic-continuous set of genes, and each genomic-continuous submatrix contains a subset of the set of samples measured to generate the DNA copy number data matrix and the gene expression data matrix.
摘要:
A method of genome analysis is provided. In certain embodiments, the method of comprises: a) contacting a genomic sample comprising a double-stranded DNA with a site-specific nicking endonuclease to provide a nicked double-stranded DNA comprising a plurality of nick sites, in which the nicking endonuclease nicks a site adjacent to a variable nucleotide; b) contacting the nicked double-stranded DNA with a polymerase in the presence of a nucleotide composition comprising a first labeled nucleotide comprising a first label, thereby producing a labeled double-stranded DNA that is not labeled at every nick site; c) stretching out the labeled double-stranded DNA to provide a stretched, labeled double-stranded DNA; and d) imaging the stretched, labeled double-stranded DNA to identify a labeling pattern on the stretched labeled double-stranded DNA.