Journal
TOXICOLOGY IN VITRO
Volume 83, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tiv.2022.105423
Keywords
In vitro techniques; Cell culture; Reagents; Fetal bovine serum; FBS; Chemically defined media
Categories
Funding
- VEGALI
- FluoGut [INTER/ANR/18/12545362]
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The research demonstrated successful transition of A549 cells from FBS-containing to FBS-free media, showing differences in cellular characteristics between the two FBS-free media.
Scientists are using in vitro methods to answer important research questions and implementing strategies to maximize the reliability and human relevance of these methods. One strategy is to replace the use of fetal bovine serum (FBS)-an undefined and variable mixture of biomolecules-in cell culture media with chemically defined or xeno-free medium. In this study, A549 cells, a human lung alveolar-like cell line commonly used in respiratory research, were transitioned from a culture medium containing FBS to media without FBS. A successful transition was determined based on analysis of cell morphology and functionality. Following transition to commercially available CnT-Prime Airway (CELLnTEC) or X-VIVOTM 10 (Lonza) medium, the cells were characterized by microscopic evaluation and calculation of doubling time. Their genotype, morphology, and functionality were assessed by monitoring the expression of gene markers for lung cell types, surfactant production, cytokine release, the presence of multilamellar bodies, and cell viability following sodium dodecyl sulphate exposure. Our results showed that A549 cells successfully transitioned to FBS-free media under submerged and air-liquid interface conditions. Cells grown in X-VIVOTM 10 medium mimicked cellular characteristics of FBSsupplemented media while those grown in CnT-Prime Airway medium demonstrated characteristics possibly more reflective of normal human alveolar epithelial cells.
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