Compartmentalized device for cell culture, cell processing, and sample dialysis
View Patent ↗A versatile compartmentalized cell culture device, with a selectively permeable membrane separating the compartments, provides many attributes relative to traditional devices. It can be configured for high-density cell culture, co-culture, and sample dialysis while rolling or standing still. It can also be configured for continuous movement of liquid between compartments. The wide combination of attributes not found in other membrane based cell culture and bioprocessing devices includes more cell capacity, more cell secreted product capacity, higher cell and product density, increased medium capacity, minimized use of exogenous growth factors, compatibility with standard cell culture equipment and protocols, increased scale up efficiency, capacity to function when rolling or standing still, capacity for perfusion without the need for pumps, and more efficient sample dialysis.
1. A compartmentalized roller bottle device comprising:
a device housing having a longitudinal axis, at least a portion of said device housing including structural means to roll on a roller rack;
a basal medium compartment having a longitudinal axis residing within said device housing, said basal medium compartment having a sidewall of which at least a portion is comprised of a semi-permeable, non-microporous membrane;
said basal medium compartment including a rigid structure for maintaining the longitudinal axis of said basal medium compartment in the same direction as said longitudinal axis of said device housing when liquid resides within said basal medium compartment;
the space within said device housing that is not occupied by said basal medium compartment forming a cell culture compartment;
a first access port providing fluid access to said basal medium compartment;
a second access port providing fluid access to said cell culture compartment, and a means of providing gas exchange between said cell culture compartment and ambient gas other than by requiring gas to only enter said cell culture compartment by traversing said semi-permeable membrane of said basal medium compartment.
2. The device of claim 1 wherein said semi-permeable membrane is capable of preventing passage of substances greater than or equal to 0.1 microns.
3. The device of claim 1 wherein said semi-permeable membrane is capable of preventing passage of substances greater than or equal to 0.01 microns.
4. The device of claim 1 wherein said basal medium compartment is generally cylindrical.
5. The device of claim 1 wherein said sidewall of said basal medium compartment sidewall includes a first section oriented a first distance from said outer housing sidewall and a second section oriented a second distance from said outer housing sidewall, wherein either said first section or said second section is not in contact with the device housing.
6. The device of claim 1 wherein said basal medium compartment includes means for rotating in the same direction of said device housing when said device housing is rolling in the horizontal position.
7. The device of claim 1 wherein said basal medium compartment includes means for rotating in the opposite direction of said device housing when said device housing is rolling in the horizontal position.
8. The device of claim 1 wherein said basal medium compartment includes a basal medium access port cover.
9. The device of claim 1 wherein said basal medium compartment includes a vent.
10. The device of claim 1 wherein the wall of said cell culture compartment includes a groove for the collection of cell culture medium.
11. The device of claim 1 including at least one projection that emanates from the outside of said device housing in order to create a rocking motion when said device housing is rolling in the horizontal position for the purpose of mixing cell culture medium.
12. The device of claim 1 including means for preventing said semi-permeable membrane from making contact with said device housing in order to enhance cell culture medium communication with said semi-permeable membrane.
13. The device of claim 1 wherein said device housing is comprised at least in part of a gas permeable material.
14. The apparatus of claim 1 in which said non-microporous membrane includes cellulose.
15. The apparatus of claim 1 in which said non-microporous membrane substantially prevents medium from moving across it when about a 3 cm 2 surface area of said non-microporous membrane resides below medium at a head height of about 2 inches.
16. A method of culturing cells in the device of claim 1 including:
adding cells and a volume of cell culture medium to said cell culture compartment;
adding a volume of basal medium to said basal medium compartment;
placing the compartmentalized roller bottle device on a roller rack.
17. The method of claim 16 wherein said volume of basal medium exceeds said volume of said cell culture medium.