Nutrient Regulation by Continuous Feeding for Large-scale Expansion of Mammalian Cells in Spheroids

作者： Bradley P. Weegman1, Ahmad Essawy2, Peter Nash2, Alexandra L. Carlson2, Kristin J. Voltzke3, Zhaohui Geng2, Marjan Jahani2, Benjamin B. Becker2, Klearchos K. Papas4, Meri T. Firpo2 1Radiology,University of Minnesota, 2Medicine,University of Minnesota, 3School of Public Health,University of Minnesota, 4Surgery,University of Arizona

简介：

Overview

This study explores nutrient regulation in mammalian cell spheroids using continuous growth adjusted feeding. It demonstrates improved growth rates compared to intermittent batch feeding in stirred suspension bioreactors.

Key Study Components

Area of Science

• Cell Culture
• Biotechnology
• Cellular Therapies

Background

• Controlled nutrient conditions are essential for culturing large numbers of cells.
• Conventional laboratory equipment can be utilized for these processes.
• Algorithms facilitate nutrient control and manipulation within experimental ranges.
• This method addresses key questions in large-scale cell culture applications.

Purpose of Study

• To improve growth rates of mammalian cell spheroids.
• To establish methods for adjusted rate fed cultures.
• To enhance uniform distribution of nutrients and gases in cell cultures.

Methods Used

• Continuous growth adjusted feeding technique.
• Stirred suspension bioreactors for cell culture.
• Algorithms for nutrient manipulation.
• Comparison with intermittent batch feeding methods.

Main Results

• Continuous feeding improved growth rates of cell spheroids.
• Uniform nutrient distribution was achieved.
• Methods demonstrated feasibility for large-scale applications.
• Potential benefits for human cellular therapies were highlighted.

Conclusions

• Continuous growth adjusted feeding is superior to batch feeding.
• This technique can facilitate large-scale cell culture.
• Further research may enhance applications in cellular therapies.

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