Patent application number | Description | Published |
20090081180 | ANTIMICROBIAL POLYMER CONJUGATES - Water-soluble polymer conjugates of antimicrobial agents retaining at least a portion of the antimicrobial activity of the agent, pharmaceutical compositions containing the polymer conjugates, and methods for treating microbial infections with the pharmaceutical compositions. | 03-26-2009 |
20110263834 | Simple Method for Simultaneous Removal of Multiple Impurities from Culture Supernatants to Ultralow Levels - This invention is directed to methods for removing, preferably simultaneously and in one step, multiple impurities form crude culture samples, and, in particular, the removal of media components, protein, nucleic acids, lipids, and lipopolysaccharides to ultralow levels. Preferably the purification process comprises: (1) binding of the target substance containing one or more contaminants to a chromatography matrix; (2) washing the bound target substance with one or more buffers containing a synergistic combination of a lyotropic agent or organic solvent, a detergent, and a salt component; and (3) desorbing the target substance from the chromatography matrix, so that the eluate contains ultra low levels of contaminants. The reduction of impurities that can be achieved is preferably 91-99.9% as compared to the amount of impurities in the target substance before purification. The invention is also directed to the targets products that have been so purified. | 10-27-2011 |
20120135030 | Method of Producing Protein-Carbohydrate Vaccines Reduced in Free Carbohydrate - This invention is directed to processes for reducing the level of free carbohydrate from a solution of protein-linked carbohydrate (conjugate) and non-linked carbohydrate. In this process, the conjugate is adsorbed to a hydrophobic membrane while the carbohydrate is not. The conjugate is then desorbed from the membrane, yielding a solution that is substantially reduced in free carbohydrate. | 05-31-2012 |
20120214187 | Method for Enhancing the Sensitivity of Antibody Based Assays - There is a constant need for increased sensitivity of antibody-based assays as well as a need for high affinity antibodies. Higher affinity molecules such as antibodies increase the specificity and sensitivity of assays. Both increased sensitivity and higher affinity can be achieved when multiple copies of a binding molecule are coupled to a flexible backbone. According to one embodiment of the invention, multiple copies of a detection molecule, such as, for example, an antibody or antibody fragment, are covalently linked to a high molecular weight water soluble polymer creates multivalent antibody constructs. The affinity or avidity increases markedly as multivalency increases and also, multiple copies of a signal molecule can be similarly added to the polymer. Thus, the construct comprises multiple copies of detection and signal molecules on a high molecular weight, water soluble, flexible polymer. Broadly, the invention comprises a multiplicity of detection molecules (D) and a multiplicity of signal molecules (S) on a polymer (P), such that P | 08-23-2012 |
20120288518 | Chemical Reagents for the Activation of Polysaccharides in the Preparation of Conjugate Vaccines - This invention provides novel reagents for cyanating polysaccharides in aqueous or part aqueous solutions so that they may be covalently linked to proteins either directly or through a spacer. These reagents include 1-cyano-4-pyrrolidinopyridinium tetrafluoroborate (CPPT), 1-cyano-imidazole (1-CI), 1-cyanobenzotriazole (1-CBT), or 2-cyanopyridazine-3(2H)one (2-CPO), or a functional derivative or modification thereof. The examples illustrate the use of these reagents with a variety of polysaccharides and proteins showing that the methods are generally applicable. | 11-15-2012 |
20130052204 | (POLY)-GLYCEROLPHOSPHATE-BASED ANTI-GRAM POSITIVE BACTERIAL VACCINE - Provided are an immunogenic composition comprising polyglycerol phosphate (PGP) and methods for using the composition for treating or preventing staphylococcal infections. The PGP may be conjugated to a T-cell dependent antigen. Also provided are methods for synthesizing PGP and methods for conjugating PGP to a T-cell dependent antigen. | 02-28-2013 |
20130302877 | Differential Functionalization of Polymers with Amino-Oxy Reagents for Diagnostic Assays - This invention relates to a method of conveniently functionalizing the reducing end of a carbohydrate polymer. The method also allows for the length of the polymer to be differentially functionalized. The invention provides a method for preparing polymers with a different functional groups or functionality on the sides than on the reducing end. An advantage of the method of the invention is that the procedures are simpler, preferably requiring less time, fewer steps, reduced temperatures and less harsh chemical components than conventional procedures for differential modification, with the further advantage that the reactions can be carried out in aqueous media. | 11-14-2013 |
20140186388 | Method for Producing Protein-Carbohydrate Vaccines Reduced in Free Carbohydrate - This invention is directed to processes for reducing the level of free carbohydrate from a solution of protein-linked carbohydrate (conjugate) and non-linked carbohydrate. In this process, the conjugate is adsorbed to a hydrophobic membrane while the carbohydrate is not. The conjugate is then desorbed from the membrane, yielding a solution that is substantially reduced in free carbohydrate. | 07-03-2014 |
20140316110 | Chemical Reagents for the Activation of Polysaccharides in the Preparation of Conjugate Vaccines - This invention provides novel reagents for cyanating polysaccharides in aqueous or part aqueous solutions so that they may be covalently linked to proteins either directly or through a spacer. These reagents include 1-cyano-4-pyrrolidinopyridinium tetrafluoroborate (CPPT), 1-cyano-imidazole (1-CI), 1-cyanobenzotriazole (1-CBT), or 2-cyanopyridazine-3(2H)one (2-CPO), or a functional derivative or modification thereof. The examples illustrate the use of these reagents with a variety of polysaccharides and proteins showing that the methods are generally applicable. | 10-23-2014 |
20140316111 | Chemical Reagents for the Activation of Polysaccharides in the Preparation of Conjugate Vaccines - This invention provides novel reagents for cyanating polysaccharides in aqueous or part aqueous solutions so that they may be covalently linked to proteins either directly or through a spacer. These reagents include 1-cyano-4-pyrrolidinopyridinium tetrafluoroborate (CPPT), 1-cyanoimidazole (1-CI), 1-cyanobenzotriazole (1-CBT), or 2-cyanopyridazine-3(2H)one (2-CPO), or a functional derivative or modification thereof. The examples illustrate the use of these reagents with a variety of polysaccharides and proteins showing that the methods are generally applicable. | 10-23-2014 |
20140323688 | Chemical Reagents for the Activation of Polysaccharides in the Preparation of Conjugate Vaccines - This invention provides novel reagents for cyanating polysaccharides in aqueous or part aqueous solutions so that they may be covalently linked to proteins either directly or through a spacer. These reagents include 1-cyano-4-pyrrolidinopyridinium tetrafluoroborate (CPPT), 1-cyano-imidazole (1-CI), 1-cyanobenzotriazole (1-CBT), or 2-cyanopyridazine-3(2H)one (2-CPO), or a functional derivative or modification thereof. The examples illustrate the use of these reagents with a variety of polysaccharides and proteins showing that the methods are generally applicable. | 10-30-2014 |