Abstract: Provided herein are methods for quantifying the concentration of multiple metabolites in a sample. Also provided are methods for relative quantification of multiple metabolites in a sample, methods for monitoring the course of a cell culture, and methods for optimising a cell culture.

Abstract: The presently disclosed subject matter relates to combinatorial vector cloning and transfection strategies for the generation of targeted integration host cells suitable for the expression of recombinant proteins, as well as targeted integration host cells generated by said strategies and compositions comprising said targeted integration host cells.

Abstract: The present disclosure relates to cells (e.g., Chinese Hamster Ovary (CHO) cells) that are modified to reduce or eliminate the expression of certain endogenous cellular proteins, and methods of using such cells in the production of a recombinant product of interest, e.g., a recombinant protein, a recombinant viral particle, or a recombinant viral vector. These modifications were specifically chosen to generate engineered cells with desired traits in several key areas, including improved cell culture performance (e.g., higher viability and product titers).

Abstract: The present disclosure relates to eukaryotic cell lines with a stable integrated loss-of-function or attenuation-of-function mutation in each of the Bax and Bak genes. Also provided are methods of producing such cell lines. This disclosure also relates to compositions and cell cultures comprising such cell lines, as well as methods of producing a product, such as a recombinant polypeptide or viral vector, using said cells, compositions and cell cultures.