SWATH-MS insights on butyric acid effect on mAbs production and redox homeostasis in CHO cells.

Sodium butyrate (NaBu) is well-known for its capacity to hinder cellular growth and act as a histone deacetylase inhibitor. It is commonly employed in the cultivation of recombinant Chinese hamster ovary (CHO) cell cultures to boost the production of specific proteins, such as antibodies. In this investigation, two types of CHO cell lines, namely K1 and DG44, along with their respective mAb-producing lines, K1-Pr and DG44_Pr, were cultured with or without NaBu. To analyze the proteome, a SWATH-based profiling method was utilized. The outcomes were assessed using Spectronaut 17, while STRING and Gene Ontology pathway analyses were performed using Cytoscape. The analysis confirms the known effects of NaBu on mAbs production, adding information on redox homeostasis of the cells.