3145results about "Viruses/bacteriophages" patented technology

A humanized murine antibody is provided. The amino acid sequences of a light chain complementarity determining region from a mouse antibody are grafted onto a human light chain, and a heavy chain complementarity determining region from a mouse antibody are grafted onto a human antibody heavy chain to produce libraries from which a humanized murine antibody having the desired specificity is selected.

The invention relates to the discovery of novel soluble neutral active Hyaluronidase Glycoproteins (sHASEGPs), methods of manufacture, and their use to facilitate administration of other molecules or to alleviate glycosaminoglycan associated pathologies. Minimally active polypeptide domains of the soluble, neutral active sHASEGP domains are described that include asparagine-linked sugar moieties required for a functional neutral active hyaluronidase domain. Included are modified amino-terminal leader peptides that enhance secretion of sHASEGP. The invention further comprises sialated and pegylated forms of a recombinant sHASEGP to enhance stability and serum pharmacokinetics over naturally occurring slaughterhouse enzymes. Further described are suitable formulations of a substantially purified recombinant sHASEGP glycoprotein derived from a eukaryotic cell that generate the proper glycosylation required for its optimal activity.

The use of extracts from the plant Hypericum perforatum in the preparation of pharmaceutical compositions for the treatment of hepatitis C, chronic hepatitis C and related viruses, said pharmaceutical compositions comprising at least one extract of the plant Hypericum perforatum and optionally in addition, one or more pharmaceutically acceptable inactive components, selected from, carriers, coatings, diluents and adjuvants.

“In silico” nucleic acid recombination methods, related integrated systems utilizing genetic operators and libraries made by in silico shuffling methods are provided.

The invention provides a cardiac rhythm management system for stimulating a heart having photosensitive tissue, vectors useful to photosensitize cells expressing the vectors, and methods for light induced depolarization of cells.

Mesothelin is a differentiation antigen present on the surface of ovarian cancers, mesotheliomas and several other types of human cancers. Because among normal tissues, mesothelin is only present on mesothelial cells, it represents a good target for antibody mediated delivery of cytotoxic agents. The present invention is directed to anti-mesothelin antibodies, including Fv molecules with particularly high affinity for mesothelin, and immunoconjugates employing them. Also described are diagnostic and therapeutic methods using the antibodies. The anti-mesothelin antibodies are well-suited for the diagnosis and treatment of cancers of the ovary, stomach, squamous cells, mesotheliomas and other malignant cells expressing mesothelin.

The p21 gene encodes a cyclin dependent kinase inhibitor which affects cell cycle progression, but the role of this gene product in altering tumor growth has not been established. The present inventors have now discovered that the growth of malignant cells in vivo is inhibited by expression of p21. Expression of p21 resulted in an accumulation of cells in G0 / G1, alteration in morphology, and cell differentiation.

The invention provides soluble fusion protein complexes having at least two soluble fusion proteins. The first fusion protein is a biologically active polypeptide covalently linked to an interleukin-15 (IL-15) polypeptide or a functional fragment thereof. The second fusion protein is a second biologically active polypeptide covalently linked to a soluble interleukin-15 receptor alpha (IL-15Rα) polypeptide or a functional fragment thereof. In the complexes of the invention, one or both of the first and second fusion proteins further includes an immunoglobulin Fc domain or a functional fragment thereof; and the first fusion protein binds to the soluble IL-15Rα domain of the second fusion protein to form a soluble fusion protein complex. The invention further provides methods for making and using the complexes of the invention.

The invention provides comprising variant amino acids in CDRs of antibody variable domains. These polypeptides provide a source of great sequence diversity that can be used as a source for identifying novel antigen binding polypeptides. The invention also provides these polypeptides as fusion polypeptides to heterologous polypeptides such as at least a portion of phage or viral coat proteins, tags, and linkers. Libraries comprising a plurality of these polypeptides are also provided. In addition, methods of and compositions for generating and using these polypeptides and libraries are provided.

Compositions and methods are disclosed for substantially dry storage at ambient temperatures of biological samples such as nucleic acids and cells in a form from which nucleic acids can be recovered, using a dissolvable or dissociable dry storage matrix that permits recovery of biologically active materials. Compositions and methods are also disclosed for automated storing, tracking retrieving and analyzing of nucleic acid samples. RFID-tagged biological sample storage devices featuring dissolvable or dissociable matrices are described for use as supports of biological samples, which matrices can be dried and subsequently rehydrated for sample recovery. Also disclosed are computer-implemented systems and methods for managing sample data.

The methods and compositions of the present invention find use in impacting microbial pathogens and in enhancing disease resistance to pathogens, particularly by plants. The compositions of the invention include nucleic acid molecules encoding Fus6 polypeptides derived from Agrotis ipsilon that possess antimicrobial properties, particularly fungicidal properties. Further provided are plant cells plants, and seed thereof, transformed with the nucleic acid molecules of the invention so as to confer disease resistance on the plant.

An apparatus and method for improving the communication capabilities of computer systems is disclosed. The most preferred embodiments of the present invention use a series of data buffers and data registers to process an incoming high speed data signal. By using the buffers and registers, the incoming signal can be reformatted and manipulated at a much lower frequency than the original transmission frequency. The deserializer of the present invention also samples a greater portion of the incoming data signal than usual to further increase reliability. These various features of the invention provide for a more stable and reliable communication link and will also provide a less expensive solution for serialization / deserialization. The present invention includes a serializer that receives parallel data input from a computer and serializes the data for transmission over a high-speed serial communication link. On the receiving end, the present invention provides a deserializer that can quickly and efficiently transform the serial data back into parallel form for use within the computer system on the receiving end. By utilizing two related clock signals, one clock signal being an integer multiple of the other, a self-synchronizing serializer / deserializer can be created. In addition, by increasing the size of the data sample on the receiving end, the comparisons necessary to retrieve a parallel signal from a serial transmission can occur at a much lower frequency than the frequency of the serial transmission. In the most preferred embodiment, the invention is provided as a integrated solution manufactured on a Peripheral Component Interconnect (PCI) card, thereby allowing the present invention to be easy installed into existing computer systems.

The present invention relates to an inducible and a high expression nucleic acid promoter isolated from Clostridium thermocellum. These promoters are useful for directing expression of a protein or polypeptide encoded by a nucleic acid molecule operably associated with the nucleic acid promoters. The present invention also relates to nucleic acid constructs including the C. thermocellum promoters, and expression vectors and hosts containing such nucleic acid constructs. The present invention also relates to protein isolated from Clostridium thermocellum, including a repressor protein. The present invention also provides methods of using the isolated promoters and proteins from Clostridium thermocellum, including methods for directing inducible in vitro and in vivo expression of a protein or polypeptide in a host, and methods of producing ethanol from a cellulosic biomass.

The present invention discloses generalizable methods of evolving nucleic acids and proteins utilizing continuous directed evolution. The invention discloses methods of passing a nucleic acid from cell to cell in a desired function-dependent manner. The linkage of the desired function and passage of the nucleic acid from cell to cell allows for continuous selection and mutation of the nucleic acid.

Compositions and methods are disclosed for substantially dry storage at ambient or elevated temperatures of biological samples such as nucleic acids, proteins and cells in a form from which the samples can be substantially recovered, using a dissolvable or dissociable dry storage matrix comprising a borate composition and a stabilizer as disclosed, such as any of a number of zwitterionic stabilizers.

A composition for forming an enteric coating on a tablet, capsule or pellet for oral ingestion includes a liquid mixture of alginic acid particles dispersed in an aqueous solution of a binding agent of locust bean, gum, gelatine, vegetable hydrocolloids and / or animal protein.

A group of modular cloning vector plasmids for the synthesis of a transgene or other complicated DNA construct, by providing a backbone having docking points therein, for the purpose of gene expression or analysis of gene expression. The invention is useful for assembling a variety of DNA fragments into a de novo DNA construct or transgene by using cloning vectors optimized to reduce the amount of manipulation frequently needed. The module vector contains at least one multiple cloning site (MCS) and multiple sets of rare restriction and / or unique homing endonuclease (“HE”) sites, arranged in a linear pattern. This arrangement defines a modular architecture that allows the user to place domain modules or inserts into a PE3 transgene vector construct without disturbing the integrity of DNA elements already incorporated into the PE3 vector in previous cloning steps. The PE3 transgenes produced using the invention may be used in a single organism, or in a variety of organisms including bacteria, yeast, mice, and other eukaryotes with little or no further modification.

The application provides, in part, vectors based on novel tobacco rattle virus replicons, as well as methods for using such vectors and transgenic plants.

In this application is described the expression and purification of a recombinant Plasmodium falciparum (3D7) AMA-1 ectodomain. The method of the present invention produces a highly purified protein which retains folding and disulfide bridging of the native molecule. The recombinant AMA-1 is useful as a diagnostic reagent, for use in antibody production, and as a vaccine.

The invention belongs to the field of pharmaceutical and biological engineering, and relates to a CRISPR / Cas9 recombinant lentiviral vector for human immunodeficiency virus gene therapy and a lentivirus of the CRISPR / Cas9 recombinant lentiviral vector. The recombinant lentiviral vector is prepared by carrying out enzyme digestion on a lentiviral vectorlentiCRISPR by BsmBI and connecting into a BsmBI cohesive end-containing CXCR4 specific target sequence to recombine; the obtained CRISPR / Cas9 recombinant lentiviral vector is capable of mutating gene sequences at four different loci of ahuman immunodeficiency virusco-receptor CXCR4 and themutatuin rate is high and up to 25-75%. The cells transformed by the recombinant lentiviral vector cannot be infected by the human immunodeficiency virus. Compared with theRNAi-Knockdown, ZFN and TALEN technologies, the method has higher efficiency of suppressing the human immunodeficiency virus replication; the system is rapid to construct, simple and low in cost, is capable of preventing the invasion of the human immunodeficiency virus and is suitable for human immunodeficiency virus gene therapy.

Methods and apparatus for processing eggs based upon a characteristic such as gender are provided. Material is extracted from each of a plurality of live eggs, the extracted material is assayed to identify eggs having the characteristic, and then eggs identified as having the characteristic are processed accordingly.

The present invention provides a novel method for culturing cells as well as a novel method for producing a recombinant protein by culturing cells at large scale (up to 1,500 L nominal volume and 750 L working volume), whereby an inflated bag provides a sterile, disposable cultivation chamber. The inflated bag is partially filled with liquid cultivation media and cells, and placed into a containment vessel. The containment vessel is positioned onto an orbitally shaken platform. The orbital shaking moves the containment vessel and thus the bag and induces thereby motion to the liquid contained therein (“shake mixing”). This motion (caused by orbital shaking) induces a dynamic force field that ensures cell suspension, bulk mixing, and oxygen transfer from the liquid surface to the respiring cells without damaging shear or foam generation.

A method of preserving organisms in viable form, the method comprising: suspending organisms in a solution of electrospinnable polymer; drawing droplets of said solution through a spinneret; applying an electrostatic field to said droplets under electrospinning conditions; so as to form fibers having a diameter no greater than about 5 μm within which distinct organisms are encapsulated in viable form.

The invention discloses an insect bioreactor capable of expressing multiple exogenous genes, and a construction method and application thereof. The construction method comprises the following steps: (1) introducing multicopy high-efficiency bacteria DNA (deoxyribonucleic acid) replication initiator into chitinase and cysteine proteinase genes of a baculovirus genome to obtain a baculovirus shuttle plasmid; (2) replacing virus duplicated essential gene downstream the polyhedrosis gene of the baculovirus shuttle plasmid with antibiotic gene to obtain a baculovirus plasmid DNA; and (3) replacingother virus duplicated and infected nonessential genes in the baculovirus shuttle plasmid with reverse selection marker gene to obtain the insect bioreactor. The antibiotic gene or reverse selection marker gene in the insect bioreactor which is constructed by replacing the exogenous target genes can express multiple exogenous genes in a host insect or insect cell. The insect bioreactor disclosed by the invention can efficiently expressing one or more exogenous genes in an insect body at the same time, and can produce massive recombinant proteins at low cost.

The invention discloses a method for quickly preparing a vaccine by editing pseudorabies virus genomes based on a CRISPR / Cas9 gene editing system and a Cre / lox recombination system and an application of the method. According to the method, the CRISPR / Cas9 gene editing system is used for synchronously and efficiently recombining a GFP gene and a mCherry gene to a pseudorabies virus gE gene site and a TK gene site respectively to obtain conditional deletion strains of a gE gene and a TK gene; after purification, the Cre / lox system is used for cutting off extraneous GFP and mCherry genes in the pseudorabies virus recombinant virus genome so as to perform purification quickly to obtain a live pseudorabies virus vaccine lack of gE / TK genes; multiple genes are operated at the same time, so that multiple rounds of flows for knocking out multiple genes in the conventional method are reduced to one round; and meanwhile, the efficient edition of virus genes by using the CRISPR / Cas9 and Cre / lox systems simplifies about thirty generations of plaque purification processes into 3-4 generations, so that the preparation efficiency of the virus vaccine is greatly improved, and the method provides a strong guarantee for effectively preventing and controlling the larger-range popularization of variant pseudorabies viruses and reducing heavy economic losses.