AI Article Synopsis

  • Spheroid cultures of primary human hepatocytes (PHH) are crucial for studying liver drug metabolism and toxicity, but varying culture conditions can lead to inconsistent results.
  • The study examined how different media compositions impact spheroid formation, protein expression, and functionality over three weeks, identifying that certain conditions closely mimic normal PHH characteristics.
  • Results indicate that media with specific glucose and insulin levels yield the healthiest PHH spheroids, while more expensive formulations led to significant deviations from native PHH, providing a reliable protocol for hepatocyte research.

Article Abstract

Spheroid cultures of primary human hepatocytes (PHH) are used in studies of hepatic drug metabolism and toxicity. The cultures are maintained under different conditions, with possible confounding results. We performed an in-depth analysis of the influence of various culture conditions to find the optimal conditions for the maintenance of an like phenotype. The formation, protein expression, and function of PHH spheroids were followed for three weeks in a high-throughput 384-well format. Medium composition affected spheroid histology, global proteome profile, drug metabolism and drug-induced toxicity. No epithelial-mesenchymal transition was observed. Media with fasting glucose and insulin levels gave spheroids with phenotypes closest to normal PHH. The most expensive medium resulted in PHH features most divergent from that of native PHH. Our results provide a protocol for culture of healthy PHH with maintained function - a prerequisite for studies of hepatocyte homeostasis and more reproducible hepatocyte research.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8551077PMC
http://dx.doi.org/10.1016/j.isci.2021.103235DOI Listing

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