Pluripotent stem cell expansion and passage using a stirred tank bioreactor
First Claim
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1. A method for culturing cells in a closed system, where the closed system comprises a cell culture vessel, a tubing assembly, a device for mixing cell aggregates, and a slicer grid, the method comprising:
- providing the cells to the cell culture vessel;
expanding the cells in the cell culture vessel to generate the cell aggregates in the cell culture vessel;
conducting an automated perfusion of the cell aggregates in the cell culture vessel;
retaining the cell aggregates in the cell culture vessel by gravity settling of the cell aggregates during the perfusion;
harvesting the cell aggregates, andconducting a serial passaging of the harvested cell aggregates in the closed system,wherein the step of serial passaging comprises dissociating the harvested cell aggregates with the slicer grid mounted in line with a tubing of the tubing assembly and the device for mixing the cell aggregates.
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Abstract
Provided herein are novel methods for expansion and passaging of cell aggregates comprising stem cells and/or differentiated cells and comprising the use of closed systems in stirred tank bioreactors. The methods of the invention permit closed system serial passage expansion of pluripotent stem cells and/or progeny thereof with associated pluripotency markers and differentiation potential.
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Citations
14 Claims
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1. A method for culturing cells in a closed system, where the closed system comprises a cell culture vessel, a tubing assembly, a device for mixing cell aggregates, and a slicer grid, the method comprising:
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providing the cells to the cell culture vessel; expanding the cells in the cell culture vessel to generate the cell aggregates in the cell culture vessel; conducting an automated perfusion of the cell aggregates in the cell culture vessel; retaining the cell aggregates in the cell culture vessel by gravity settling of the cell aggregates during the perfusion; harvesting the cell aggregates, and conducting a serial passaging of the harvested cell aggregates in the closed system, wherein the step of serial passaging comprises dissociating the harvested cell aggregates with the slicer grid mounted in line with a tubing of the tubing assembly and the device for mixing the cell aggregates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for culturing cells in a closed system, where the closed system comprises a stirred tank bioreactor vessel, a tubing assembly, a device for mixing of cell aggregates, and a slicer grid, the method comprising:
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providing the cells to the stirred tank bioreactor vessel; expanding the cells in the stirred tank bioreactor vessel to generate cell aggregates; conducting an automated perfusion of the cell aggregates in the stirred tank bioreactor vessel; retaining the cell aggregates in the stirred tank bioreactor vessel by gravity settling of the cell aggregates during the perfusion; harvesting the cell aggregates; and conducting a serial passaging of the harvested cell aggregates in the closed system, wherein the step of serial passaging comprises dissociating the harvested cell aggregates with the slicer grid mounted in line with the tubing of the tubing assembly and the device for mixing the cell aggregates. - View Dependent Claims (14)
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Specification