The current release of the PepCyber: P~Pep database V1.2 (May 2010) includes 11,269 records of interactions between 387 PPBD proteins and 1,471 substrate proteins, curated from 4,852 published studies.  This release represents a 60% increase in the number proteins covered over the previous release.

PepCyber: P~Pep is the largest public database of human protein-protein interactions mediated by phosphoprotein binding domains (PPBDs).   The database is hand curated from peer-reviewed literature and is a rich information source emphasizing the reported, experimentally validated data for specific PPBD-PPEP interactions, not a simple deposit of computational entries.  PepCyber: P~Pep is freely accessible at http://www.pepcyber.org/PPEP/.

  1. Gong W, Zhou D, Ren Y, Wang Y, Zuo Z, Shen Y, Xiao F, Zhu Q, Hong A, Zhou X, Gao X, Li T. (2008) PepCyber:P~PEP: a database of human protein protein interactions mediated by phosphoprotein-binding domains. Nucleic Acids Res 36(Database issue), D679-83. [article]

InDepth Data Analysis Report Includes:

Map to Reference Sequence

  • Includes custom construction of reference database(s) for mapping – miRBase, genome, etc
  • Sequence data can be aligned to any publicly available small RNA databases for annotation of known small RNA
  • Unknown small RNAs can be aligned with reference genomes

Additional Bioinformatics Analysis

  • Classification of all mapped reads
  • Length distribution of mapped sequences
  • Annotation documentation of mapped sequences
  • Alignment of sequence variants such as isomirs
  • Genomic and chromosomal location of sequence clusters
  • Prediction of new possible miRs
  • Detailed explanation of miRNA analysis results and their context

 

Download the PDF of the summary report here.  Please contact us to obtain a complete set of sample data files.

Transcriptomics, or genome-wide expression profiling, aims to catalogue the complete set of RNA transcripts produced by the genome, including mRNAs, non-coding RNAs and small RNAs.  Transcriptomics provides new biological insight and can be used to determine the structure of genes, their splicing patterns and other post transcriptional modifications, to detect rare and novel transcripts, and to quantify the changing expression levels of each transcript during development and under different disease conditions.

LC Sciences now provides a one-stop solution (i.e. from sample to data) for transcriptome sequencing using the latest in RNA-Seq technology.  RNA-Seq is a new method and a powerful tool to identify and quantitatively decode the entire population of RNAs in your sample.  Rather than sequencing RNA directly, the RNA-Seq method makes use of the latest high-throughput sequencing technology to sequence cDNA in order to reveal information about your sample’s RNA content.

The transcriptome profiling and analysis services by LC Sciences are comprehensive and provide the most complete picture of RNA content in your samples.  We can help you set up and conduct a high-quality, well-controlled RNA-Seq experiment based on the latest deep-sequencing technologies. (read more…)

swarm

SOUTHWESTERN AND ROCKY MOUNTAIN DIVISION
of the
THE AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE

85th ANNUAL MEETING 

“EXPANDING FRONTIERS through the ADVANCEMENT OF SCIENCE”

RICE UNIVERSITY
HOUSTON, TEXAS
APRIL 8-10, 2010

microRNAs in Development & Disease Session

Preethie H. Gunaratne, Ph.D. (Chair)
Sponsors: LC Sciences, Norgen Biotek, Illumnia, Integrated DNA Technologies, Thermo Scientific
Date: 04-08-10
Time: 1.00-7.00 PM

Room: 284 BRC (BioScience Research Collaborative)

AGENDA

1.00-1.10 pm: Introduction and welcome.

1.10-1.30 pm:  Preethi H. Gunaratne, Ph.D.

Assistant Professor, Dept. Biology & Biochemistry, University of Houston

Title: A Functional genomics platform for discovering novel tumor suppressor microRNAs for individualized cancer therapy

1.35-1.55 pm:  Martin M. Matzuk, M.D., Ph.D.

Professor, Department of Pathology, Baylor College of Medicine

Title: Small RNAs in the female reproductive tract of mammals

2.00-2.20pm:  Matthew L. Anderson, M.D., Ph.D.

Assistant Professor, Department of Obstetrics & Gynecology, Baylor College of Medicine

Title:MicroRNAs as Therapeutic Targets in Female Reproductive Tract Cancers

2.25-2.45 pm:  Jason Shohet, M.D., Ph.D.

Assistant Professor, Pediatric/Hem-Onc Cell & Gene Therapy, Baylor College of Medicine

Title:A Genome-wide screen for MYCN regulated microRNAs with ChIP-seq reveal oncogenic and tumor supressor microRNAs in neuroblastoma

BREAK – 2.45-3.00 pm

3.00-3.20 pm: Soo-Kyung Lee, Ph.D.

 Assistant Professor, Dept. Molecular and Cellular Biology, Baylor College of Medicine

Title: The role of an intronic microRNA family in the gene regulatory network during spinal cord development

3.25-3.45 pm:  Joel Neilson, Ph.D.

Assistant Professor, Department of Molecular Physiology, Baylor College of Medicine

Title: Programs of 3′ UTR variation in normal and transformed mammalian cells.

3.50-4.10 pm. Dr. Tom Cooper, M.D.

Professor, Department of Pathology, Baylor College of Medicine

Title:MicroRNA-mediated regulation of RNA binding proteins controls a network of alternative splicing transitions during postnatal mouse heart development.

BREAK: 4.10-4.25 pm

4.25-4.45 pm:  Robert J. Schwartz, Ph.D.

Professor, Department of Biology & Biochemistry, University of Houston

Title: Serum response factor micromanages heart development

4.50-5.10 pm:  Austin J. Cooney, Ph.D.

Associate Professor, Department of Cell & Molecular Biology, Baylor College of Medicine

Title:miRNA regulation of pluripotency factors.

5.15-5.35 pm: Gerald Wilmink, Ph.D.

William Roach, Air Force Research Laboratory, Brooks City-Base, TX

Title:  Identification and characterization of microRNAs associated with hyperthermia-induced cellular response

5.35 – 5.55 pm: David B. Corry, M.D.

Professor of Medicine and Immunology, Baylor College of Medicine

Title:The pro-inflammatory role of miRNAs: an emerging paradigm.

6.00-7.00 pm: Reception

Frank Breitling, Christopher Schirwitz2, Thomas Felgenhauer2, Ines Block2, Volker Stadler2 and Ralf Bischoff2

(1)  Karlsruhe Institute of Technology, Helmholtzplatz 1, 76344 Eggenstein-Leopoldshafen, Germany
(2)  AG Chipbasierte Peptidbibliotheken, Im Neuenheimer Feld 580, 69120 Heidelberg, Germany

 

Affordable high-density peptide arrays are needed to routinely define the exact binding sites of antibodies. In terms of prize and density peptide arrays currently lag far behind oligonucleotide arrays that are available in densities exceeding 50.000 oligonucleotides per cm2. This is mainly due to the monomer-by-monomer repeated consecutive coupling of 20 different amino acids associated with the lithographic methods, which adds up to an excessive number of coupling cycles. The combinatorial synthesis of peptide arrays based on electrically charged solid amino acid particles circumvents this problem. A colour laser printer or a microchip consecutively address the different charged particles to a solid support, where a complete layer of solid amino acid particles is melted at once. This releases hitherto immobilized amino acids to couple all 20 different amino acids to the support in one single coupling reaction.

 

LC Sciences offers a comprehensive epitope mapping service for high throughput, high-resolution identification of epitopes and other protein-protein interactions.

Through the use of overlapping peptides as epitopes on a custom synthesized addressable peptide microarray (PepArray™), we can systematically screen thousands of sequences in a single experiment.  A proprietary microarray platform and advanced microfluidic technologies ensure quantitative measurements of binding events.

This combination of high-throughput capacity with quantitative measurement enables us to quickly and efficiently identify high affinity and high specificity target binding compounds.

mirbase_supplier_comparisonLC Sciences’ microRNA microarrays cover all species for which sequence data are available in the miRBase Sequence Database and the Plant MicroRNA Database.  Other suppliers are not covering miRs from the Plant MicroRNA database and their arrays covering the miRBase are somewhat out of date.  Since miRBase is being continually updated, a flexible microarray platform is necessary to keep current with the latest miRBase version (14.0 released in September of 2009).

Supplier miRBase             Version           Coverage Total        miRBase     Entries miRBase           Release Date
LC Sciences 14.0 10883 Sept 2009
Agilent 12.0 8619 Sept 2008
Affymetrix 11.0 6396 April 2008
Exiqon 11.0 6396 April 2008
Invitrogen 9.0 4361 Oct 2006

Read more

Plos-One---2009---ExpressioResearchers at the University of Malaya, Kuala Lumpur and the National University of Singapore demonstrate that peripheral blood miRNAs and their profiles can be developed as biomarkers in diagnosis and prognosis of cerebral ischaemic stroke. MicroRNA microarrays were utilized to detect dysregulated miRNAs even after several months from the onset of stroke in what is usually regarded as neurologically stable patients.

Tan KS, Armugam A, Sepramaniam S, Lim KY, Setyowati KD, Wang CW, Jeyaseelan K.  (2009) Expression profile of MicroRNAs in young stroke patients. PLoS One 4(11), e7689.  [article]

Science-Nov-2009-Life-ScienBy Anne Harding
Microarrays are a vital tool in research on microRNAs, the tiny noncoding stretches of genetic material that regulate messenger RNA. They can’t be beat for reading the microRNA “fingerprints” unique to disease states. But keeping up with this super hot field is a challenge for commercial microarray makers, and competition is fierce. (read more)

mirna_145aResearchers at the LSU Neuroscience Center have discovered a role for miRNA-146a in the evasion of Herpes simplex virus type-1 (HSV-1) from the complement system (a major first-line host defense mechanism), and the activation of key elements of the arachidonic acid cascade known to contribute to Alzheimer-type neuropathological change.

MicroRNA microarray revealed that human primary neural cells infected with HSV-1 (17syn +) showed upregulation of miRNA-146a, a brain-enriched microRNA that is associated with proinflammatory signaling in stressed brain cells and Alzheimer’s disease.

Hill JM, Zhao Y, Clement C, Neumann DM, Lukiw WJ.  (2009) HSV-1 infection of human brain cells induces miRNA-146a and Alzheimer-type inflammatory signaling.  Neuroreport  20(16), 1500-505.  [abstract]