Small interfering RNA (siRNA), sometimes known as short interfering RNA or silencing RNA, is a class of double-stranded RNA molecules, 20-25 nucleotides in length, that play a variety of roles in biology. Most notably, siRNA is involved in the RNA interference (RNAi) pathway, where it interferes with the expression of a specific gene. In addition to their role in the RNAi pathway, siRNAs also act in RNAi-related pathways, e.g., as an antiviral mechanism or in shaping the chromatin structure of a genome; the complexity of these pathways is only now being elucidated.
Small RNA molecules, including microRNAs (miRNAs) and small interfering RNAs (siRNAs), offer tremendous potential for new therapeutic agents to inhibit cancer cell growth. However, delivering these small RNAs to solid tumors remains a significant challenge, as the RNAs must target the correct cells and avoid being broken down by enzymes in the body.
Oncothyreon Inc., a biotechnology company specializing in the development of innovative therapeutic products for the treatment of cancer, today announced that it has acquired Alpine Biosciences, Inc., of Seattle, Washington, a privately held biotechnology company developing protocells, a nanoparticle platform technology designed to enable the targeted delivery of multiple therapeutic agents, including nucleic acids, proteins, peptides and small molecules.
Circulating tumor cells spread ovarian cancer through the bloodstream, homing in on a sheath of abdominal fatty tissue where it can grow and metastasize to other organs, scientists at The University of Texas MD Anderson Cancer Center report in Cancer Cell.
PeptiMed announced today that under a Material Transfer Agreement it will collaborate with the National Cancer Institute's (NCI) Nanotechnology Characterization Laboratory (NCL), located at the Frederick National Laboratory of Cancer Research in Frederick, MD.
In 2012, about 8.2 million people died of cancer making the disease a major cause of death worldwide. According to the WHO World Cancer Report 2014, this figure is expected to rise within the next two decades.
Targeted therapies have revolutionised the treatment of cancer since they were first introduced. Amongst the first medications approved in Europe, was the breast cancer drug Herceptin, which was approved in 2000. Then, the drug Glivec, was initially introduced to treat a certain form of leukaemia, and approved in 2001. Targeted therapies specifically inhibit molecules within so-called signalling pathways that usually control cell growth, death and differentiation. If they are altered, for example falsely inactivated or activated, the cells may start growing in an uncontrolled manner.
Alnylam Pharmaceuticals, Inc., a leading RNAi therapeutics company, announced today new pre-clinical results with its Development Candidate (DC) for ALN-CC5, a subcutaneously administered investigational RNAi therapeutic targeting complement component C5 in development for the treatment of complement-mediated diseases.
Avidity NanoMedicines LLC, a biopharmaceutical company pioneering a breakthrough approach to the targeted delivery of nucleic acid-based medicines, announced today that its scientific co-founder, Mark E. Davis, Ph.D., will receive the 2014 Prince of Asturias Award for Technical and Scientific Research.
The suppression of two genes reduce breast cancer tumor formation and metastasis by interfering with blood vessel formation and recruitment, report scientists from Houston Methodist and five other institutions in the Proceedings of the National Academy of Sciences (now online).
A targeted gene silencing strategy blocks production of the dysfunctional huntingtin (Htt) protein, the cause of Huntington's disease, a fatal, inherited neurodegenerative disorder.
RNA interference (RNAi) is a naturally occurring process, which cells can use to silence, or ‘turn off’ unwanted genes.
Working together, Johns Hopkins biomedical engineers and neurosurgeons report that they have created tiny, biodegradable “nanoparticles” able to carry DNA to brain cancer cells in mice.
Scientists at The University of Texas at Austin have discovered that a protein produced by the influenza A virus helps it outwit one of our body's natural defense mechanisms. That makes the protein a potentially good target for antiviral drugs directed against the influenza A virus.
Scientists at Indiana University have unlocked one of the mysteries of modern genetics: how acquired traits can be passed between generations in a process called epigenetic inheritance. The new work finds that cells don't know to silence some genes based on information hardwired into their DNA sequences, but recognize heritable chemical marks that are added to the genes. These chemical tags serve as a form of molecular memory, allowing cells to recognize the genes and remember to silence them again in each new generation.
Arrowhead Research Corporation (NASDAQ: ARWR), a biopharmaceutical company developing targeted RNAi therapeutics, today announced that it received regulatory approval to begin a Phase 2a clinical trial of ARC-520, its RNAi-based drug candidate for the treatment of chronic hepatitis B virus (HBV) infection.
Inspired by tiny particles that carry cholesterol through the body, MIT chemical engineers have designed nanoparticles that can deliver snippets of genetic material that turn off disease-causing genes.
Forget the oysters and the champagne this Valentine's Day. If you want to keep your true love's heart beating strong, the real foods of love are dark chocolate and red wine, said Loyola University Health System preventive heart specialist Sara Sirna, MD.
Researchers from Spain have identified several new splicing events regulated by the oncogenic splicing factor SRSF1 in lung cancer, suggesting that their dysregulation is involved in the pathogenesis of the disease.
Gene related to the proliferation of cancerous cells blocked through molecular technology. A group of researchers from Mexico's General Hospital, Health Secretariat, Medicine Faculty and the Institute of Cellular Physiology of the National Autonomous University of Mexico (UNAM) identified a therapeutic target for cervix cancer: gene CDKN3.
Resistance of tumor cells toward multiple cytostatic drugs is a serious problem in cancer treatment. In the journal Angewandte Chemie, a team of Chinese and American researchers has now introduced a new approach to gene therapy that could counter this problem: The gene that codes for resistance is “silenced” through the use of an ingenious nanocomplex.