2725 results about "Phosphorylation" patented technology

Methods and compositions for performing RNA interference comprising a wide variety of stabilized siRNAs suitable for use in serum-containing media and for in vivo applications, such as therapeutic applications, are provided. These siRNAs permit effective and efficient applications of RNA interference to applications such as diagnostics and therapeutics through the use of one or more modifications including orthoesters, terminal conjugates, modified linkages and 2′ modified nucleotides. Uniquely modified siRNAs have been developed that reduces off-target effects incurred in gene-silencing. The modifications include phosphorylation of the first 5′ terminal antisense nucleotide; 2′ carbon modifications of the first and second or first, second, and third 5′ terminal antisense nucleotides; and optionally 2′ carbon modifications of the first and second or first, second, and third 5′ terminal sense nucleotide. Control and exaequo molecules are also provided. siRNA molecules and related control, trackability and exaequo agents with specific stability modifications were developed.

Disclosed are methods for identification of agents that modulate cell attachment, cell migration and cell viability. Cancer and primary cells adhered to a matrix are treated with agent(s) that modulate ActRII signaling and cell adhesion. Agents are tested that modulate cell adhesion, detachment, invasion and viability. Agents that modulate the expression, phosphorylation, function and translocation of ActRII signaling pathway members also can predict agents that modulate cell adhesion, detachment, invasion and viability. The methods have utility in identifying agents that prevent cancer cell metastasis, wound dehiscence, aortic dissection and aid retina attachment and skin replacement and fertility.

Methods, reagents, and kits are provided that permit flow cytometric determination of the phosphorylation status of retinoblastoma susceptibility gene protein (pRB) in individual cells. Methods are described that permit the hypophosphorylated, active, form of pRB to be measured either as an absolute quantity or as a proportion of total cellular pRB. Further described are methods that permit pRB phosphorylation status to be correlated with cell cycle phase and with protein components of the cell cycle. Screening of chemical compounds for antiproliferative and antineoplastic activity using the flow cytometric assays is demonstrated. Reagent kits that facilitate the subject methods are also provided.