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Specific Ligand-Based Depletion of Human Albumin and IgG in the Presence of Denaturants
Todd Sanderson, Hongshan Li, Brian Miller, Laura Alionte, and Lisa Bradbury

Poster data highlights the advantages of a ligand-based depletion method that functions in the presence of urea and is highly specific, disposable, cost effective, and flexible.

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A New Disposable, Specific Ligand-Based Method for Depletion of Albumin and IgG From Serum and Plasma
Laura Alionte, Allison Miller, Cal Messing, Tao Hu, and Lisa Bradbury

Poster shows the advantages of a ligand-based depletion method that is highly specific, disposable, cost effective, and flexible. Pall’s Enchant Multi-Protein Affinity Separation Kit is a strong addition to the product choices for scientists engaged in biomarker discovery and proteomics research.

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Expression of stress response protein GRP78 is associated with the development of castration-resistant prostate cancer
Llana Pootrakul, Anirban P. Mitra, Ram H. Datar, Shan-Rong Shi, Jie Cai, Debra Hawes, Susan G. Groshen, Amy S. Lee, Richard J. Cote

This study investigated the role of the GRP78 in prostate cancer progression and the development of castration-resistant prostate cancer, where cancer cells continue to survive despite the stress of an androgen-starved environment.

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Application of genetic programming in analysis of quantitative gene expression profiles for identification of nodal status in bladder cancer
Anirban P. Mitra, Arpit A. Almal, Ben George, David W. Fry, Peter F. Lenehan, Vincenzo Pagliarulo, Richard J. Cote, Ram H. Datar, William P. Worzel

Nodal involvement in bladder cancer is an independent indicator of prognosis. This study employed an iterative machine learning process called genetic programming on quantitative expression values of 70 genes to classify primary urothelial carcinoma samples into those associated with or without nodal metastasis. The generated rules showed a strong predilection for ICAM1, MAP2K6 and KDR resulting in gene expression motifs that cumulatively suggested a pattern ICAM1>MAP2K6>KDR for node positive ca

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How to Perform High Throughput siRNA Transfection
Mark Hewitson, Hanno Hermann and Neil Benn

We demonstrate the optimization of siRNA transfection process for time and costs in a high throughput application with two independent measurements of the RNAi effect: The visual monitoring of Eg5 expression and the quantitative PCR measurement of GAPDH mRNA after transfection of Hela cells. The results show, that 1 wash cycle is sufficient for the removal of any remnants of the transfection complex from disposable tips, making the tips re-usable.

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New Protein Biomarkers for Histopathological Classification of Breast Cancer
Brozkova Kristyna, Knoflickova Dana, Bouchal Pavel, Nenutil Rudolf and Vojtesek Borivoj

We used Ciphergen technology based on SELDI TOF-MS (Surface Enhanced Laser Desorption/Ionisation Time-of-Flight Mass Spectrometry) for analysis of protein expression profiles of 105 breast cancer tissue samples. The aim of this study was the identification of single proteins or protein patterns specific for different tumour subgroups, which should take advantage of the biomarker as an alternative to commonly used diagnostic and prognostic characteristics.

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Development of an Automated siRNA Screening of Host Macrophages Genes Involved in Mycobacterium Tuberculosis Infection
Jean-Philippe Carralot, Chang-Bok Lee, Annette Boese, Boris Lenseigne, Auguste Genovesio, Peter Sommer, Thierry Christophe and Priscille Brodin

In order to identify host genes required for M. tuberculosis infection and persistence, we developed a phenotypic cell-based assay in both murine and human cells and adapted it for high throughput and high content screening purposes. Knock-down efficiencies above 80% were achieved in “hard-to-Transfect” macrophage cells. Validation of the assay performed with control siRNAs will be discussed.

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Quantification of siRNA by a Novel Competitive-qPCR Method
Wei-li, Liu., Mark Stevenson and Len Seymour

We have developed a competitive qPCR method in which siRNA competes with a homologous forward primer to bind template DNA, giving siRNA concentration dependent inhibition. The addition of E6-siRNA to cqPCR led to inhibition of amplification in a linear concentration-dependent manner, with as little as 200pg of siRNA capable of being detected. Irrelevant siRNA had no effect on amplification confirming specificity

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The Silencing of Multidrug Resistance-Associated Protein 5 by siRNA Complexes
M.Malinen, E.Mannermaa, T.Ryhänen, E.Kuusela, M.Häkli, M.Yliperttula and A.Urtti

The purpose is to study the role of multidrug resistance-associated protein 5, MRP5 in drug metabolism in human retinal pigment epithelium (RPE). RPE forms the outer part of blood-retinal barrier (BRB) which restricts movements of solutes from systemic bloodstream to the neural retina. The efflux protein, MPR5 is expressed in RPE but its functions are mainly unknown. SiRNA will be tested as a tool to clarify the role of MRP5.

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Scientific News
UTSW Cancer Researchers Identify Irreversible Inhibitor for KRAS Gene Mutation
Irreversible inhibitor for KRAS gene mutation involved in lung, colon, and pancreatic cancers.
Bowel Cancer Breakthrough May Benefit Thousands of Patients
Researchers at Queen’s University have discovered how two genes cause bowel cancer cells to become resistant to treatments used against the disease.
Study Finds Low Oxygen Environment Helps Tumors Silence Critical Genes
The study led by Yale Cancer Center may provide clues to how some aggressive cancers turn off, or silence, genes critical to suppressing tumors.
Researchers Uncover New Cancer Cell Vulnerability
The research showed that telomerase-expressing cells depend upon a gene named p21 for their survival.
Self-assembling Nanoparticle Could Improve MRI Scanning for Cancer Diagnosis
Scientists have designed the nanoparticle that targets tumours, to help doctors diagnose cancer earlier.
Wisconsin Scientists Find Genetic Recipe to Turn Stem Cells to Blood
The ability to reliably and safely make in the laboratory all of the different types of cells in human blood is one key step closer to reality.
Capturing Cancer: A Powerful New Technique for Early Diagnosis
Researchers describe an innovative technique for early disease detection, which they call immunosignaturing.
Study Identifies Novel Genomic Changes in the Most Common Type of Lung Cancer
TCGA finds mutations in a key cancer-causing pathway, expanding targets for existing drugs.
Low Doses of Arsenic Cause Cancer in Male Mice
NIH researchers found that arsenic in drinking water develop lung cancer.
Brain Tumor Invasion Along Blood Vessels May Lead to New Cancer Treatments
NIH-funded researchers find brain tumor cells disrupt the brain’s protective barrier, offering potential avenues for therapy.
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