In November 2021, Rathangadhara Nammalwar (manager of protein-based therapeutics at Sartorius) delivered a presentation describing the hallmarks of a robust cell line development (CLD) platform. Focusing on the importance of expression constructs, he then explained how collaboration with external partners has enabled Sartorius to optimize its Cellca CLD platform for mammalian-cell production of therapeutic proteins. Nammalwar’s Presentation Nammalwar identified key criteria for selecting a CLD platform, noting first that it should leverage a highly productive cell line that yields high-quality…