Embodiments provide for introducing a first fluid into a bioreactor and while introducing the first fluid into the bioreactor, circulating a second fluid with a reagent at a first flow rate through the bioreactor. The bioreactor may be maintained in a first orientation for a first period of time to allow at least a first portion of the reagent to coat the bioreactor. The second fluid may then be circulated at a second flow rate slower than the first flow rate to allow a second portion of the reagent to coat the bioreactor. Introduction of the first fluid may promote coating of the bioreactor by ultrafiltration. The introduction of the first fluid may be stopped. A third fluid may be circulated through the bioreactor to remove a portion of the reagent not coated on the bioreactor.

A cell culture bioreactor has membranes divided into a plurality of zones. The membranes may include perfusion membranes carrying a liquid media and/or gas transfer membranes. The bioreactor has one or more sensors configured to collect data from one or more locations within the bioreactor. The supply of one or more of the gaseous and/or liquid media to a selected zone or zones may be controlled. In some examples, the supply includes a background supply and a selectable incremental supply. The bioreactor may be used to grow cells in suspension. Liquid media circulates within an extra-capillary space of the bioreactor. In some examples, a portion of cells is permitted for a period of time to be restrained within one or more zones of the membranes. Elements of a reactor may be made in a mold. A reactor may be operated in a fed-batch process.

Embodiments relate to systems and methods for increasing the cell growth surface within the roller tubes used as reaction vessels in a cell culture system by using a rotating platform or cage-like structure with a center of rotation of each of roller tubes being held therein being coaxial with the circumferential distribution of the plurality of roller tubes held in the platform. Each of the roller tubes has a superellipse or squircle cross-sectional shape to further increase the cell growth surface within the roller tubes. Additional improvements include use of a removable cell adherence liner, a cell perfusion system, a cell culture monitoring system, and a gas circulation system.

Systems and methods for the dynamic co-culturing of two cell populations are provided. The system includes a barrier configured to physically separate a stimulator cell population from a responder cell population disposed within a container. The barrier is permeable to the secreted factors of at least one of the cell populations. The responder cell population can thereby be altered by exposure to the secreted factors to produce a population of reprogrammed cells that includes biomolecules (e.g., nucleic acids) originating from the stimulator cell population and/or that exhibits one or more additional or modified functional activities than a parental population of the reprogrammed cells.

Embodiments described herein generally relate to methods and systems for configuring settings of a cell expansion system including a bioreactor. Through a user interface, a user may configure display settings, system settings, and settings associated with protocols for loading, growing and/or harvesting cells. In configuring settings for protocols and associated processes, a diagram view or window of the cell expansion system is displayed in embodiments. The diagram view displays the process settings as graphical user interface elements. Settings available for configuration are enabled for selection in the diagram view. The diagram view allows the user to visualize the settings available for task configuration and to configure enabled settings. Configured settings are stored and capable of retrieval for subsequent execution or modification of the applicable protocol.

Embodiments described herein generally provide for the scheduled feeding of cells in a cell expansion system. A schedule to proactively and automatically increase and/or maintain inlet rates of media to feed cells may be created, in which inlet rates to the intracapillary portion (or extracapillary portion) of a bioreactor may be increased or maintained according to the schedule. Such schedule may be conservative or aggressive or a combination thereof, for example. Multiple schedules may be used. Scheduled media exchanges may also be included. By following a feed schedule, the monitoring of metabolite levels may be optional. Inlet rates may be increased or maintained without manual manipulation. Media usage may also be more predictable. In an embodiment, a custom task(s) may be created to follow a desired feed schedule. In another embodiment, a pre-programmed task(s) may be used for the scheduled feeding of cells.

Embodiments described herein generally relate to methods and systems for customizing protocols for use with a cell expansion system. Through a user interface, a user may create a custom task for loading, growing and/or harvesting cells. A custom task may comprise one or more steps, in which a user may add or omit steps, as desired. Data may be entered for settings associated with a custom task, in which embodiments provide for such data to be entered each time the custom task is performed. In another embodiment, the settings for a custom task may be configured, in which such settings may be stored and retrieved upon selection of the custom task. Customization and configuration of a custom task may occur using a diagram view of the cell expansion system, in which process settings are associated with graphical user interface elements.

Described are embodiments for expanding cells in a bioreactor. In one embodiment, methods are provided that distribute cells throughout the bioreactor and attach cells to specific portions of a bioreactor to improve the expansion of the cells in the bioreactor. Embodiments may be implemented on a cell expansion system configured to load, distribute, attach and expand cells.

Described are embodiments for expanding cells in a bioreactor. In one embodiment, methods are provided that distribute cells throughout the bioreactor and attach cells to specific portions of a bioreactor to improve the expansion of the cells in the bioreactor. Embodiments may be implemented on a cell expansion system configured to load, distribute, attach and expand cells.

Embodiments described herein generally provide for the expansion of cells in a cell expansion system using an active promotion of a coating agent(s) to a cell growth surface in some embodiments. A coating agent may be applied to a surface, such as the cell growth surface of a hollow fiber in a bioreactor, by controlling the movement of a fluid in which a coating agent is suspended, by changing flow rates, by changing flow directions, by rotation of the bioreactor, and/or combinations thereof.