760 results about "Cell migration" patented technology

An implantable device for facilitating the healing of voids in bone, cartilage and soft tissue is disclosed. A preferred embodiment includes a cartilage region comprising a polyelectrolytic complex joined with a subchondral bone region. The cartilage region, of this embodiment, enhances the environment for chondrocytes to grow articular cartilage; while the subchondral bone region enhances the environment for cells which migrate into that region's macrostructure and which differentiate into osteoblasts. Another embodiment is arranged for the local delivery of therapeutic agent. A preferred embodiment is a porous resorbable implant, wherein the therapy delivery may be localized in nature, rather than systemic, such that higher doses at the target site may be allowed than would be tolerable by the body systemically.

An implantable device for facilitating the healing of voids in bone, cartilage and soft tissue is disclosed. A preferred embodiment includes a cartilage region comprising a polyelectrolytic complex joined with a subchondral bone region. The cartilage region, of this embodiment, enhances the environment for chondrocytes to grow articular cartilage; while the subchondral bone region enhances the environment for cells which migrate into that region's macrostructure and which differentiate into osteoblasts. A hydrophobic barrier exists between the regions, of this embodiment. In one embodiment, the polyelectrolytic complex transforms to hydrogel, following the implant procedure.

The invention relates to conjugates of anti-integrin specific antibodies with cytotoxic compounds, the synthesis, selection, and use of such conjugates for use in cancer therapy or other diseases mediated by cell proliferation, cell migration, or inflammation and which pathology involves angiogenesis or neovascularization of new tissue. In addition the invention relates to combination therapy of such diseases wherein the treatment comprises use of said conjugates in combination with one or more other treatment modalities including but not limited to: chemotherapy, surgery or radiation therapy. The preferred conjugates contain maytansinoid compounds linked to the antibody by a disulfide linkage, and preferred chemotherapeutic agents are doxorubicin, a taxane, a camptothecin, a podophyllotoxin, a nucleoside analog, or a pyrimidine analog.

A method of assisting recovery of an injury site of brain or spinal cord injury includes providing a therapeutic dose of X-ray radiation to the injury site through an array of parallel microplanar beams. The dose at least temporarily removes regeneration inhibitors from the irradiated regions. Substantially unirradiated cells surviving between the microplanar beams migrate to the in-beam irradiated portion and assist in recovery. The dose may be administered in dose fractions over several sessions, separated in time, using angle-variable intersecting microbeam arrays (AVIMA). Additional doses may be administered by varying the orientation of the microplanar beams. The method may be enhanced by injecting stem cells into the injury site.

A multilayer microculture capable of modeling complex in vitro structures such as mammalian tissues and organ structures is provided, along with methods for producing such a microculture and methods of using such microcultures for assaying for modulators of cell-cell interaction, cell migration, cell proliferation, cell adhesion or cellular or organismal physiology. Further provided are methods of identifying hazardous materials such as environmental toxins and pollutants (e.g., carcinogenic compounds), and methods of monitoring organismal physiology.

Disclosed are particular 3-dimensional structural matrices containing nucleic acids, various fabrication processes and methods for the prolonged release of nucleic acids in various biological environments. The nucleic acid-matrix materials are created such that they maintain a defined space, allowing cellular migration, transfection and proliferation to occur in a controlled manner. The fabrication processes provide for both high incorporation efficiencies and control over the sustained nucleic acid release. The resultant nucleic acid-containing structural matrices are thus particularly useful in in vivo cell transfection and gene expression in the context of gene therapy.

A method of treating cancer by targeting two proteases, MMP-9 and cathepsin B is provided. Therapeutic compositions comprising one or more plant extracts that inhibit MMP-9 and / or cathepsin B, which are capable of inhibiting neoplastic and / or endothelial cell migration, tumour growth, tumour-induced angiogenesis and / or metastasis are also provided. The therapeutic compositions of the invention can be used in the treatment of cancer, and, methods of inhibiting tumour growth, tumour metastasis, and / or tumour-induced angiogenesis using the therapeutic compositions alone or in combination with an anti-cancer agent are, therefore, also provided.

Implantable materials having defined patterns of affinity regions for binding endothelial cells and providing for directed endothelial cell migration across the surface of the material. The affinity regions include photochemically altered regions of a material surface and physical members patterned on the material surface that exhibit a greater affinity for endothelial cell binding and migration than the remaining regions of the material surface.

Ocular solutions containing at least one macrolide antibiotic and / or mycophenolic acid provide anti-inflammatory, anti-cell proliferation, anti-cell migration, anti-angiogenesis, antimicrobial and antifungal effects. In one embodiment, the solution is administered intraocularly after cataract surgery before insertion of a replacement intraocular lens, resulting in reduced posterior capsular opacification which may eliminate the need for a subsequent surgery. The solution may be one that is invasively administered, for example, an irrigation or volume replacement solution containing at least one macrolide antibiotic such as tacrolimus, sirolimus, everolimus, cyclosporine, and ascomycin, or mycophenolic acid. The solution may be one that is non-invasively or topically administered in the form of drops, ointments, gels, creams, etc. and may include eye lubricants and contact lens solutions. The solution may contain a supratherapeutic concentration of agent(s) so that a therapeutic concentration of a topically administered solution accumulates in a diseased ocular structure sufficient to treat the disease.

Ocular solutions containing at least one macrolide antibiotic and / or mycophenolic acid provide anti-inflammatory, anti-cell proliferation, anti-cell migration, anti-angiogenesis, antimicrobial, and antifungal effects. In one embodiment, the solution is administered intraocularly after cataract surgery before insertion of a replacement intraocular lens, resulting in reduced posterior capsular opacification which may eliminate the need for a subsequent surgery. The solution may be one that is invasively administered, for example, an irrigation or volume replacement solution containing at least one macrolide antibiotic such as tacrolimus, sirolimus, everolimus, cyclosporine, and ascomycin, or mycophenolic acid. The solution may be one that is non-invasively or topically administered in the form of drops, ointments, gels, creams, etc. and may include eye lubricants and contact lens solutions.

The present invention provides methods and compositions for inhibiting the biological activity of integrins, for inhibiting endothelial cell migration. and for inhibiting angiogenesis. In particular, the invention provides compositions comprising ADAM disintegrin domains and methods for using said compositions. In preferred embodiments the methods and compositions of the invention are used to inhibit angiogenesis and to treat diseases or conditions mediated by angiogenesis.

Methods for treating an individual having cancer are provided. The method may include administering a cell migration inhibitor and a chemotherapeutic agent to the individual to inhibit migration of cancer cell. Inhibiting cell migration may increase cell division. In this manner, the cell migration inhibitor and the chemotherapeutic agent in combination may have increased efficacy compared to the chemotherapeutic agent alone due to the increased cell division. The cell migration inhibitor may include any of the inhibitors described herein. For example, the cell migration inhibitor may be an organic molecule having a molecular weight of less than about 700, a monoclonal antibody, or a natural product.

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.

Ocular solutions containing at least one macrolide antibiotic and / or mycophenolic acid provide anti-inflammatory, anti-cell proliferation, anti-cell migration, anti-angiogenesis, antimicrobial, and antifungal effects. In one embodiment, the solution is administered intraocularly after cataract surgery before insertion of a replacement intraocular lens, resulting in reduced posterior capsular opacification which may eliminate the need for a subsequent surgery. The solution may be one that is invasively administered, for example, an irrigation or volume replacement solution containing at least one macrolide antibiotic such as tacrolimus, sirolimus, everolimus, cyclosporine, and ascomycin, or mycophenolic acid. The solution may be one that is non-invasively or topically administered in the form of drops, ointments, gels, creams, etc. and may include eye lubricants and contact lens solutions. The solution may contain a supratherapeutic concentration of agent(s) so that a therapeutic concentration of a topically administered solution accumulates in a diseased ocular structure sufficient to treat the disease. The agent(s) may be formulated with polymers or other components for extended or slow release to provide a substantially constant concentration over the course of treatment.

Systems, including methods, apparatus, compositions, and kits, for multiplexed assay of cell migration with subdivided cell holders and / or microplates.

The invention relates to the use of a cannabis plant extract or a cannabinoid as a pharmaceutically active agent in the inhibition of tumour cell migration.

Methods, systems and devices are disclosed for treating a spinal disorder by applying a source of direct current to a spinal cord in animals, including humans. Trans-spinal direct current stimulation (tsDCS) uses direct current via cathodal and / or anodal stimulation to induce cell proliferation, cell differentiation, and / or cell migration at or near the area of the spinal cord being treated, and up-regulates or down-regulates protein expression by cells at or near the area of the spinal cord being treated.

The disclosed methods and apparatus provide for the automatic segmentation and analysis of the overall migration rate and proliferation rate of cells that may be used with any resolution image and without the need to prepare the sample or the image before the image is analyzed. In particular embodiments, the method or apparatus of analyzing a cell image comprise performing a structure tensor analysis and / or regularization and / or a histogram-based analysis and / or a level-set analysis to classify pixels in the image into a region of interest (ROI), corresponding to cell clusters, and a non-significant region. Methods and apparatus for cell migration analysis comprise means for computing the areas of the segmented ROIs for a set of images. Methods and apparatus for cell proliferation analysis comprise means for counting the number of cells within the segmented ROIs for a set of images.

Extracts from plant material, or semi-purified / purified molecules or compounds prepared from the extracts that demonstrate the ability to modulate one or more cellular activities are provided. The extracts are capable of slowing down, inhibiting or preventing cell migration, for example, the migration of endothelial cells or neoplastic cells and thus, the use of the extracts to slow down, inhibit or prevent abnormal cell migration in an animal is also provided. Methods of selecting and preparing the plant extracts and methods of screening the extracts to determine their ability to modulate one or more cellular activity are described. The purification or semi-purification of one or more molecules from the described extracts is also contemplated as well as the use of these molecules, alone or in combination with an extract, to slow down, inhibit or prevent abnormal cell migration in an animal.

The invention relates to a tissue engineering bracket material capable of physically embedding active substances and a preparation method thereof. The tissue engineering bracket material capable of physically embedding the active substances is prepared from 100 weight parts of biodegradable macromolecular substance and 0 to 20 weight parts of active substances, wherein the weight part of the active substances is not equal to zero; 100 weight parts of biodegradable macromolecular substance consists of 50 to 100 weight parts of synthetic macromolecular substance and 0 to 50 weight parts of natural macromolecular substance; the macromolecular substances and the active substances form a micromolecular nanofiber membrane or a composite macromolecular nanofiber membrane; and the active substances are bonded on the surface of the fiber membrane uniformly. The tissue engineering bracket material capable of physically embedding the active substances has high biocompatibility and sufficient mechanical strength, can be biodegraded, is suitable for proliferation and directed differentiation of stem cells, and has the functions of promoting cell migration adhesion and capturing the stem cells so as to induce regeneration of tissues such as bones, cartilages, nerves, skin and the like.

The present invention is directed towards immunoglobulin polypeptides that specifically bind to the extracellular domain of the human type beta PDGF receptor. The binding of the immunoglobulin polypeptides to the receptor inhibits PDGF-induced (or stimulated) receptor activation as indicated by inhibition of receptor phosphorylation and dimerization, and by inhibition of PDGF-mediated mitogenesis, chemotaxis and migration of cells displaying the human PDGF type beta receptor on the cell surface. Nucleic acids encoding the immunoglobulin polypeptides are also included in the invention. The immunoglobulin polypeptides have diagnostic and therapeutic uses.

This invention relates to inhibition of αv integrins, especially αvβ3 and αvβ6 integrins, by specific antagonists, preferably non-peptidic antagonists, related compounds and compounds with comparable specificity, that downregulate fibrogenesis by inhibiting cell migration and production of pro-fibrogenic molecules (e.g., collagens, TIMP-1) and cytokines (e.g., CTGF) by activated hepatic stellate cells / myofibroblasts, activated epithelia and endothelia. These antagonists alone or in combination with other agents can effectively prevent, mitigate or even reverse development of advanced fibrosis, such as fibrosis / cirrhosis of the liver and fibrosis of other organs, such as lungs, kidneys, intestine, pancreas, skin and arteries.

The invention discloses gRNA target sequences for endogenous overexpression of 1ncRNA-XIST, a CRISPR / dCas9 lentivirus system and application thereof. The gRNA target sequences are respectively as shown in SED ID No. 1, SED ID No. 2 and SED ID No. 3. The CRISPR / dCas9 lentivirus system comprises the gRNA target sequences for endogenous overexpression of 1ncRNA-XIST. A method for screening stable strains according to the characteristics that lentivirus must be integrated into a host genome is cooperated with CRISPR / dCas9 to realize the endogenous overexpression of the large fragment gene 1ncRNA-XIST, so that the defect of incapability of stably expressing the large fragment gene 1ncRNA-XIST in a traditional method is overcome, the efficient overexpression stable cell strain of the large fragment gene 1ncRNA-XIST can be obtained in a short time, or cells obtained by screening can stably express target genes, thereby obtaining stably silenced 1ncRNA-XIST downstream specific gene cell strain. The gRNA target sequences and the CRISPR / dCas9 lentivirus system have important guiding significance on the research of the function of 1ncRNA-XIST in the trophocyte migration and the effect of 1ncRNA-XIST in the proliferation disorder and fetal growth restriction process.

Methods for treating an individual having cancer are provided. The method may include administering a cell migration inhibitor and a chemotherapeutic agent to the individual to inhibit migration of cancer cell. Inhibiting cell migration may increase cell division. In this manner, the cell migration inhibitor and the chemotherapeutic agent in combination may have increased efficacy compared to the chemotherapeutic agent alone due to the increased cell division. The cell migration inhibitor may include any of the inhibitors described herein. For example, the cell migration inhibitor may be an organic molecule having a molecular weight of less than about 700, a monoclonal antibody, or a natural product.

The present invention features a method of inducing an anti-angiogenesis effect within a tumorous region in the body of a mammal, wherein the method comprises the steps of administering, to a patient, a formulation comprising processed Morinda Citrifolia, wherein the processed Morinda citrifolia blocks formation of new blood vessels within a tumorous region by inhibiting tubule elongation and endothelial cell migration. Blocking the growth factors of said endothelial cells within said tumorous region inhibits tubule elongation and endothelial cell migration. In a preferred embodiment, the processed Morinda citrifolia comprises fruit juice and puree juice in various concentrations.

The invention discloses a nerve repair conduit and a preparation method thereof. The nerve repair conduit consists of an inner layer conduit and an outer layer fiber wall, wherein the inner layer conduit consists of silk fibroin fibers arranged in the extending direction of the conduit, the outer layer fiber wall consists of the silk fibroin fibers encircling the conduit vertically and arranged axially, and the diameters of the silk fibroin fibers are between 50 and 3,000 nanometers; and the method for preparing the nerve repair conduit comprises the following steps: (1) preparing a regenerative silk fibroin film; (2) dissolving a pure regenerative silk fibroin film and preparing the silk fibroin fibers by using electrostatic spinning; and (3) collecting the silk fibroin fibers by using a roller device to obtain the nerve repair conduit. The nerve repair conduit is made from high-purity silk fibroin and is biodegradable, and the inner layer is made from parallel fibers arranged in the extending direction of the conduit and can conduct nerve cell migration; and the outer layer fibers are arranged by encircling the conduit axially and can support the conduit to prevent collapse.

The present invention provides compounds for modulating receptor kinase activity, particularly ephrin and EGFR, and methods of treating diseases mediated by receptor kinase activity utilizing the compounds and pharmaceutical compositions thereof. Diseases mediated by receptor kinase activity include, but are not limited to, diseases characterized in part by abnormal levels of cell proliferation (i.e. tumor growth), programmed cell death (apoptosis), cell migration and invasion and angiogenesis associated with tumor growth. Compounds of the invention include “spectrum selective” kinase modulators, compounds that inhibit, regulate and / or modulate signal transduction across subfamilies of receptor-type tyrosine kinases, including ephrin and EGFR.

The present invention provides a microfluidic chip and a method for studying non-contact type cell co-cultivation by using the same. The microfluidic chip comprises a sample inlet, a cell cultivation room, a cell migration region and a waste pool. The upper end of the cell cultivation room is connected to the sample inlet and the lower end of the cell cultivation room is connected to the waste pool. Three parallel cell cultivation rooms are joined by cell migration region. The microfluidic chip provides good microenvironment for non-contact type cell co-cultivation, enables to form a concentration gradient in the cell migration region and facilitates observation of cell migration process in real time and research of transdifferentiation. The invention is advantageous in easy operation, simple manufacturing and small dosage of samples.