Abstract:
The present invention is directed to use of Aedes aegypti densonucleosis virus (Aedes DNV or AeDNV) as a heterologous gene expression system. The invention described herein provides promoters from the Aedes aegypti genome such as the p.05, p7 and p61 promoters to generate expression vectors with cloning sites for insertion of heterologous genes. The invention further provides expression vectors comprising an AeDNV promoter operably linked to a heterologous gene and insect host cells comprising the vectors of the invention. Methods of producing recombinant proteins utilizing the vectors of the invention are also provided. The present invention further provides a kit containing the vectors of the invention for production of a recombinant protein.
Abstract:
The present invention is directed to the use of a cyclopropylmethyl derivative as a protecting group for compounds containing an amino group, carboxy group, amido group, mercapto group or hydroxy group and to the compounds formed having the cyclopropylmethyl moiety as the protecting group.
Abstract:
The present invention is directed to a rapid and sensitive method for detecting Mycoplasma hominis using M. hominis-specific probes, oligonucleotides or antibodies. In particular a target sequence can be amplified by in vitro nucleic acid amplification techniques, detected by nucleic acid hybridization using the subject probes and oligonucleotides or detected by immunoassay using M. hominis-specific antibodies. M. hominis-specific nucleic acids which do not recognize or hybridize to genomic nucleic acid of other Mycoplasma species are also provided.
Abstract:
Peptides containing the sequence Ala-Lys-Pro-Arg have suppressive effects on the proliferation of a broad range of myelopoietic progenitor cells. In a preferred embodiment, the peptide has the sequence Glu-Thr-Val-Ile-Met-Lys-Ala-Lys-Pro-Arg-Ala-Asn-Phe-Pro. The peptides of the present invention are useful in the treatment of myelopoietic hyperproliferative disorders, and in protecting myeloid cells from damage induced by chemotherapy and radiation. Peptides containing the sequence Ala-Lys-Pro-Arg are also useful in the treatment of endotoxin-induced septic shock.
Abstract:
The subject invention concerns compositions and methods useful for the prevention or amelioration of autoimmune diseases. Specifically exemplified are compositions and methods useful in immunizing to delay or prevent insulin dependent diabetes. In a preferred embodiment, diabetes is prevented or delayed by the parenteral administration of a composition comprising specific antigenic peptides of B-chain insulin and further comprising incomplete Freund's adjuvant. The specifically exemplified insulin B-chain composition stimulates the immune response, and depresses the synthesis of cytotoxic lymphokines in the target tissue.
Abstract:
This invention relates to a process for forming an amide or an ester from a reaction between an amine or an alcohol, respectively and an acylating derivative of a carboxylic acid, in the presence of an effective amount of a compound having formula (I), and N-oxides thereof and salts thereof.
Abstract:
Solid substrates with free hydroxyl groups as phosphorylated by thermolysing a solution of phosphoramidate of formula (I), in the presence of the substrate, whereby metaphosphate is generated which phosphorylates the substrate.
Abstract:
The present invention relates to a method of forming defect-free ultrathin film composite membranes by the photochemical synthesis of an ultrathin polymer film on the surface of a microporous support membrane. In one particular embodiment, the method entails placing a support membrane on a filter paper which is saturated with a solution of the desired monomer(s). The solution then wicks to the top of the membrane, covering the surface with a thin solution film, where it is subjected to irradiation by ultraviolet (UV) light to initiate the polymerization of the ultrathin polymer film. The rate of polymerization can be enhanced by adding a photoinitiator to the gas phase above the membrane or into solution with the monomer or monomers to induce radical polymerization. The method results in a defect-free ultrathin composite membrane. In addition, to minimize photon penetration depth and confine the polymerization predominantly to the membrane surface, the incident at which the UV light strikes the membrane surface is kept at an acute angle. The ultrathin film composite membranes can be used in a vast number of chemical separation processes, bioreactors and sensors, energy conversion and drug delivery systems.
Abstract:
A process for making a cycloalkyl phosphine comprising hydrogenating an aryl phosphine in the presence of an effective amount of an aryloxide of a metal selected from the group consisting of niobium and tantalum is disclosed. Cycloalkyl phosphine products of this process, useful as ligands in a complex of a transition metal which acts as a catalyst in the formation of stereoisomers, are also set forth. Furthermore, niobium or tantalum organometallic compounds, generated in this process, useful in the catalytic hydrogenation of aryl phosphines and arene-containing polymers, is also described.