Cell Culture

Cell Culture refers to the controlled growth and maintenance of cells outside their natural environment under defined conditions, providing fundamental technology for biopharmaceutical manufacturing, research, and testing applications. This technique involves cultivating cells in specialised media containing nutrients, growth factors, and buffering systems within controlled environments maintaining optimal temperature, pH, oxygen levels, and sterility.

Cell culture systems range from simple static flasks for research to sophisticated bioreactor platforms supporting commercial-scale production of therapeutic proteins, monoclonal antibodies, vaccines, and cellular products. Mammalian cell culture, particularly using Chinese hamster ovary (CHO) and human cell lines, dominates therapeutic protein manufacturing due to capacity for proper protein folding, post-translational modifications, and glycosylation patterns matching human proteins. Microbial systems including Escherichia coli and yeast offer advantages for producing certain proteins at lower costs. Process development optimises media formulations, feeding strategies, and culture conditions maximising productivity while maintaining product quality attributes. Modern approaches include perfusion culture enabling continuous operation, intensified fed-batch processes achieving extremely high cell densities, and single-use systems improving flexibility. Quality by design principles guide cell culture development, identifying critical process parameters and establishing control strategies ensuring robust performance. As biomanufacturing advances, cell culture technology continues evolving through automation, advanced sensors, predictive modelling, and novel culture systems supporting next-generation therapeutics.