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A comparison of siRNA activity predictors using advanced regression techniques
Simone Sciabola, Qing Cao, Theresa Johnson, Lingling Shen, Robert Stanton, Xiaoyu Jiang, Simon Xi, Jason Hughes, Daniel Caffrey, Shobha Potluri, Steven Haney, Johnathan Cyr, Jeremy Little

Although considerable progress has been made recently in understanding how gene silencing is mediated by the RNAi pathway, the design of effective sequences is still a challenging task. To tackle the efficacy challenge and further improve accuracy for prediction of siRNA potency, we performed a comparison of advanced regression techniques and new in-house generated descriptors in the generation of siRNA efficiency models.

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miRNAs in Treating Cardiomyopathy
Veenu Aishwarya

The study aims to design antigomirs against miRNAs involved in Cardiomyopathy. Potential miRNAs involved in the down regulation of certain important genes during this disorder have been identified. All reported miRNAs were scanned using an algorithm against these genes. At three step protocol was followed to take care of false positives and false negatives. Further, HL-1 cells (cardiomyocytes) are been transfected by anti-miRNAs for confirmation.

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qPCRas a primary screen in drug discovery
GauravJaggi, Frank Boeckler, Andreas Joerger and Alan Fersht

We report the use of qPCR technique to follow the thermal unfolding of proteins by the binding of the dye SYPRO Orange, and exploit its potential as a robust and high-throughput primary screen for small molecule drug discovery.

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Targeting Inflammatory Cytokines Using Adenoviruses: gene delivery of biological therapies in ovarian cancer
Michael A. Salako, Hagen Kulbe, Iain A. McNeish, Frances R. Balkwill

Constitutive TNF-alpha expression is characteristic of the malignant ovarian surface epithelium. Adenoviral mutants hold great promise as gene therapy vectors but their efficacy is hindered by an inflammatory cascade orchestrated by TNF-alpha. We found that delivering TNF-alpha shRNA to ovarian cancer cells using oncolytic adenoviruses could reduce the inflammatory cascade generated by adenoviruses and also had direct anti-tumour activity on the cancer cells.

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RNA interference in Manduca sexta induced by double-stranded RNA feeding
Isabel Gomez, Alejandra Bravo and Mario Soberon

We used a double-stranded RNA feeding approach to silence cadherin-like gene: a protein reported as receptor in several lepidopteran insects for the Cry toxins synthesized by Bacillus thuringiensis. We analized the protein expression from dsRNA-fed and untreated laravae on western blott. M. sexta larvae that ingested dsRNA directed against cadherin exhibited a dramatic suppression of the protein and are resistant to the effect of the Cry1Ab toxin.

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Heterochromatin structure is induced by siRNA targeting HIV-1 promoter region
K Suzuki1, H Lim1,3, T Ishida2, T Watanabe2, D Cooper1,3, A Kelleher1,3

We transfected siRNA targeting HIV-1 promoter region into a cell line productively infected with HIV-1. ChIP analysis revealed that the RNA duplex induced transcriptional gene silencing and enrichment of Ago1, H3K9me2, and HDAC1 in HIV promoter region to form heterochromatin structure. The data indicates RNA duplex induces the latent phase of HIV infection, since the chromosome formation is very similar to the state of HIV latently infected cell lines

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Efficient downregulation of the lung liquid clearing gammaENaC subunit by RNAi
Nihal Yueksekdag, Marei Drechsel, Christa Schmidt, and Josef Rosenecker

CF is caused by mutations in the gene encoding for CFTR. CFTR functions as chloride channel on the apical membrane of epithelia thereby regulating the transport of chloride and also sodium ions indirectly. It seems that the regulation of ENaC fails due to the mutated CFTR protein. And it is assumed that ENaC plays a role in the pathogenesis of chronic lung disease in CF-patients.

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In Vitro Potency of Chemically Modified siRNAs Against TNF-alpha
Sandra M. Ocampo, Anna Aviño, Santiago Grijalvo, José C. Perales and Ramón Eritja

The execution of succesful RNAi experiments depends upon multiple factors: 1. Design and identification of effective and specific siRNA sites 2. Enhancement of pharmacocinetic properties 3. Delivery of siRNA. Therefore we have designed, prepared and functionality tested a variety of chemical modifications. These have been tested in HeLa cells to ascertain wether they influence RNAi inducing activity. We have chosen tumor necrosis factor (TNF-alpha) as a target.

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Critical factors for successful RNAi experiments in primary cells and hard to transfect cell lines
Markus Zumbansen1, Nicole Spottke1, Sheila Offizier1, Allison St. Amand2, Devin Leake2, Ludger Altrogge1, Meike Weigel1, Sandra Domzalski1, Dietmar Lenz, and Herbert Müller-Hartmann1

The amaxa Nucleofector® Technology is a well established method for effective, non-viral transfection of any nucleic acid substrate into hard-to-transfect cells, especially suspension and primary cells. With the Nucleofector® 96-well Shuttle® system high throughput applications such as siRNA-library screenings have become amenable for the first time in these cell types. This renders target validation and identification possible in cell types highly relevant for biomedical research. Here we dis

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Showing Results 71 - 80 of 142
Scientific News
NIH Announces the Launch of 3 Integrated Precision Medicine Trials
ALCHEMIST is for patients with certain types of early-stage lung cancer.
Researchers Obtain Key Insights into How the Internal Body Clock is Tuned
New way to regulate internal body clocks by long non-coding RNA.
Novel Gene Predicts Both Breast Cancer Relapse and Response to Chemotherapy
A predictive marker discovered by scientists at A*STAR and NUS could help doctors classify breast cancer patients for more effective treatment.
Computer Model Reveals Cancer's Energy Source
Findings focused on the energy-making process in cancer cells known as the Warburg Effect.
Immune Cells get Cancer-Fighting Boost From Nanomaterials
Yale researchers used bundled carbon nanotubes to incubate cytotoxic T cells.
New Ways to Treat Solid Tumours
An international team of scientists has shown that an antibody against the protein EphA3, found in the micro-environment of solid cancers, has anti-tumour effects.
Gene Likely to Promote Childhood Cancers Pinpointed
CRI Researchers have identified a gene that contributes to the development of several childhood cancers, in a study conducted with mice designed to model the cancers.
New Analysis Reveals Tumor Weaknesses
Identifying epigenetic markers in cancer cells could improve patient treatment.
CRI Scientists Pinpoint Gene Likely to Promote Childhood Cancers
The study was published in the journal Cancer Cell.
A New Way to Model Cancer
New gene-editing technique allows scientists to more rapidly study the role of mutations in tumor development.
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