Janssen Diagnostics Inc. | Date: 2015-06-23
The invention relates generally to the field of the identification of DNA sequences, genes or chromosomes. Methods and composition to obtain Unique Sequence DNA probes are provided. Compositions comprises of and double stranded DNA containing Unique Sequences from which the repetitive sequences are eliminated according to the method described in this invention. The invention also relates to the preservation of cells that have been identified after immunomagnetic selection and fluorescent labeling in order to further interrogate the cells of interest. Furthermore the invention relates to genetic analysis of cells that have been identified after immunomagnetic selection and fluorescent labeling.
Janssen Diagnostics Inc. | Date: 2014-06-24
Circulating Endothelial Cells are isolated from patient blood and gene expression of the cells is analyzed to assess a medical condition or the tissue of origin of the cell. Kits for conducting the method are also provided.
Scripps Health, Janssen Diagnostics Inc. and Ortho Clinical Diagnostics Inc. | Date: 2015-05-15
Compositions, systems and methods for the diagnosing the risk of acute myocardial infarction are provided. The methods described herein relate to the use of biomarkers, such as gene expression profiles, and analytical tools for providing information to a health care provider or the patient, that is relevant to the cardiovascular health of the patient.
Stuyver L.J.,Janssen Diagnostics Inc. |
Verbeke T.,Open Web Analytics |
Van Loy T.,Janssen Diagnostics Inc. |
Van Gulck E.,Janssen Infectious Disease CREATe |
Tritsmans L.,Janssen RandD
Virology Journal | Year: 2013
Background: Human polyomaviruses (HPyV) infections cause mostly unapparent or mild primary infections, followed by lifelong nonpathogenic persistence. HPyV, and specifically JCPyV, are known to co-diverge with their host, implying a slow rate of viral evolution and a large timescale of virus/host co-existence. Recent bio-informatic reports showed a large level of peptide homology between JCPyV and the human proteome. In this study, the antibody response to PyV peptides is evaluated. Methods. The in-silico analysis of the HPyV proteome was followed by peptide microarray serology. A HPyV-peptide microarray containing 4,284 peptides was designed and covered 10 polyomavirus proteomes. Plasma samples from 49 healthy subjects were tested against these peptides. Results: In-silico analysis of all possible HPyV 5-mer amino acid sequences were compared to the human proteome, and 1,609 unique motifs are presented. Assuming a linear epitope being as small as a pentapeptide, on average 9.3% of the polyomavirus proteome is unique and could be recognized by the host as non-self. Small t Ag (stAg) contains a significantly higher percentage of unique pentapeptides. Experimental evidence for the presence of antibodies against HPyV 15-mer peptides in healthy subjects resulted in the following observations: i) antibody responses against stAg were significantly elevated, and against viral protein 2 (VP2) significantly reduced; and ii) there was a significant correlation between the increasing number of embedded unique HPyV penta-peptides and the increase in microarray fluorescent signal. Conclusion: The anti-peptide HPyV-antibodies in healthy subjects are preferably directed against the penta-peptide derived unique fraction of the viral proteome. © 2013 Stuyver et al.; licensee BioMed Central Ltd.
Lagatie O.,Janssen Diagnostics Inc. |
Tritsmans L.,Janssen Research and Development |
Stuyver L.J.,Janssen Diagnostics Inc.
Virology Journal | Year: 2013
Polyomaviruses are a family of non-enveloped DNA viruses infecting several species, including humans, primates, birds, rodents, bats, horse, cattle, raccoon and sea lion. They typically cause asymptomatic infection and establish latency but can be reactivated under certain conditions causing severe diseases. MicroRNAs (miRNAs) are small non-coding RNAs that play important roles in several cellular processes by binding to and inhibiting the translation of specific mRNA transcripts. In this review, we summarize the current knowledge of microRNAs involved in polyomavirus infection. We review in detail the different viral miRNAs that have been discovered and the role they play in controlling both host and viral protein expression. We also give an overview of the current understanding on how host miRNAs may function in controlling polyomavirus replication, immune evasion and pathogenesis. © 2013 Lagatie et al.; licensee BioMed Central Ltd.