Abstract: Disclosed herein are methods for preparing compositions containing oligonucleotides. Methods of this disclosure involve subjecting an aqueous solution of a oligonucleotide to ultrafiltration/diafiltration (UF/DF) in order to form a retentate containing the oligonucleotide, where the ultrafiltration/diafiltration (UF/DF) is carried out using an aqueous buffer solution containing one or more salts. Also disclosed herein are oligonucleotide-containing compositions obtained by these methods.

Abstract: The present disclosure describes a convergent liquid phase process for manufacturing oligonucleotides by coupling two or more oligonucleotide fragments, each of which have two or more nucleotides. Also provided by the present disclosure are reaction steps involved the convergent liquid phase process.

Abstract: The present invention relates to improved methods in the separation recombinant polypeptides with post-translational modifications from complex mixtures through the use of a cation exchange medium.

Abstract: The present invention relates to a method for PEGylating interferon beta.

Abstract: The present invention is directed to a method of purifying oligonucleotides using hydrophobic interaction chromatography.

Abstract: The invention herein describes a method to purify a target oligonucleotide using hydrophobic interaction chromatography (HIC). The method includes adding a salt to a mixture of the target oligonucleotide and product-related impurities, applying the diluted mixture, at a particular dynamic loading capacity, to the hydrophobic interaction chromatography resin (or hydrophobic adsorbent), washing the hydrophobic adsorbent with an aqueous salt solution, eluting the target oligonucleotide with a eluting solution, and collecting the eluent comprising the target oligonucleotide.

Abstract: The invention provides a composition comprising an anti-tumor necrosis factor (TNF)-alpha polypeptide, wherein the composition produces a reduced level of immunogenicity when administered to a subject, as well as a treatment method involving the administration of the composition.

Abstract: The present invention is directed to a method of purifying oligonucleotides hydrophobic interaction chromatography.

Abstract: The invention provides a composition comprising an anti-tumor necrosis factor (TNF)-alpha polypeptide, wherein the composition produces a reduced level of immunogenicity when administered to a subject, as well as a treatment method involving the administration of the composition.

Abstract: The present invention relates to a method for PEGylating interferon beta.

Abstract: The present invention relates to improved methods in the separation recombinant polypeptides with post-translational modifications from complex mixtures through the use of a cation exchange medium.

Abstract: The present invention pertains to improved methods of using dye-ligand affinity chromatography for the isolation of antibodies or proteins comprising an antibody fragment (such as Fc fusion proteins) from a mixture of undesirable contaminants. In particular, the use of an organic polymer such as polyethylene glycol (PEG) in the elution phase of an antibody/dye-ligand chromatography isolation procedure results in improved separation of target antibodies from undesirable contaminants. The methods described herein are particularly useful in separating or removing antibody aggregates, misfolded antibodies, and virus contaminants from target antibodies.

Abstract: The present invention pertains to improved methods of using dye-ligand affinity chromatography for the isolation of antibodies or proteins comprising an antibody fragment (such as Fc fusion proteins) from a mixture of undesirable contaminants. In particular, the use of an organic polymer such as polyethylene glycol (PEG) in the elution phase of an antibody/dye-ligand chromatography isolation procedure results in improved separation of target antibodies from undesirable contaminants. The methods described herein are particularly useful in separating or removing antibody aggregates, misfolded antibodies, and virus contaminants from target antibodies.

Abstract: The present invention is related to a method of isolating a biological macromolecule in a composition. Specifically, the present invention is related to a method of isolating a biomacromolecule in a composition containing an impurity, the method comprising adding a polyalkylene glycol to the composition, adding a transition metal to the composition, and separating said biomacromolecule from said impurity.