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132results about How to "Good cell permeability" patented technology

Non-activated wnt inhibition polypeptides and method for preparing the same

The present invention relates to non-activated Wnt inhibition polypeptides (WIPs) containing: (a) a protein transduction domain (PTD) which enables said WIPs to permeate a cell membrane without the aid of a cell membrane receptor; and (b) a Wnt antagonist domain which is inactive by itself, but is activated in mammalian cells and then secreted out of the cells to function to inhibit Wnt signal transduction. Also, the invention relates to a method for preparing said non-activated WIPs, and a pharmaceutical composition containing said WIPs as active ingredients. Said non-activated WIPs can be produced in large quantities through the culture of bacteria such as E coli., and are biochemically inactive before being administered into the human body, and thus the production cost thereof is only one several tenths of that of previously known active proteins (sFRPs, DKKs, etc.) having uses similar thereto, and the isolation/purification and handling/administration processes thereof are significantly simple and convenient. When said non-activated WIPs are administered in vivo, they will have the effects of inhibiting the invasive growth and metastasis of cancer cells and treating immune diseases, such as rheumatoid arthritis by pharmacological mechanisms different from those of the previously known sFRPs or DKKs.
Owner:KIM JUNG MOON +4

Ratio fluorescence nano probe, and preparation method and application thereof

The invention relates to the fields of biomedical detection and biochemical analysis, and particularly discloses a novel fluorescence probe of surface-functionalized silicon dioxide fluorescence nanoparticles for intracellular / extracellular zinc ion detection. The probe is prepared by covalently connecting the aminoquinoline-grafted dendriform polyethyleneimine derivatives to the surface of the dipyridyl-ruthenium-embedded silicon dioxide fluorescence nanoparticles; and a ratio fluorescence method is utilized to perform intracellular / extracellular zinc ion detection. The method is an improvement on the basis of the zinc ion fluorescence detection method, and can maximally enhance the detection sensitivity.
Owner:SUN YAT SEN UNIV

Treatment of muscular dystrophies and related disorders

InactiveUS7759314B2Long life spanLess “ leaky ”BiocideGenetic material ingredientsDystrophin-associated protein complexProteoglycan
The invention provides, among other aspects, compositions and methods for treating, preventing, and diagnosing diseases or conditions associated with an abnormal level or activity of biglycan; diseases or conditions associated with an abnormal level or activity of collagen VI; disorders associated with an unstable cytoplasmic membrane, due, e.g., to an unstable dystrophin associated protein complex (DAPC); and disorders associated with abnormal synapses or neuromuscular junctions, including those resulting from an abnormal MuSK activation or acetylcholine receptor (AChR) aggregation.
Owner:BROWN UNIVERSITY

Agrobacterium tumefaciens capable of metabolizing nicotine and application thereof

The invention discloses a pseudomonas putida to metabolite nicotine, which is characterized by the following: preserving in China Typical Culture Preservation Center (Wuhan university, china Wuhan) with keeping number as CCTCC NO.M 206131; possessing stronger nicotine metabolic ability and nicotine toxin immunity ability; growing highest at 5g / L nicotine density; culturing a great deal of a strain; using intact cell as biological activator; co-suspending in phosphoric acid buffer with solid waste matter from tobacco industry; oscillating; degrading nicotine completely. This bacterium possesses simple operation, which can be used to dispose tobacco waste matter widely.
Owner:SHANDONG UNIV

Stilbene two-photon fluorescence probe for detecting zinc ion in cell

The invention relates to a stilbene two-photon fluorescence probe for detecting a zinc ion in a cell. Single-photon excitation and two-photon excitation of a probe molecule are respectively carried out in a range from 390 to 420 nm and in a range from 790 to 820 nm, and chemical-optic stability is good; the fluorescence quantum yield is high before the probe molecule is complexed with the zinc ion, and single-photon detection and two-photon detection on the zinc ion can be carried out; the probe molecule has a good selectivity on the zinc ion; in a physiological pH range, the probe molecule is insensitive to the variation of the pH; in a range of pH5-pH8, pH variation dose not basically influence fluorescence-emission of a complex; dissociation constant between the probe molecule and the zinc ion is in a micromole grade range, the cell zinc ion with micromole concentration can be detected; the probe molecule has a good cell permeability, is suitable for the detection of zinc ion concentration variation in the cell; and distribution fluorescence images or false color proportion fluorescence images of the zinc ion in various active cells or tissues are obtained by a laser confocal fluorescence microscope.
Owner:SHAOGUAN COLLEGE
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