Abstract:
The present invention relates generally to a multi-layer system for containing cells in culture, and a system for visualizing cells cultured in the multi-layered system. More specifically, the present invention relates to a multi-layer cell culture device having a specialized bottom plate and a microscope adaptor which can accommodate a microscope to allow microscopic visualization of cells cultured in the device.
Abstract:
An assembly for culturing cells includes a housing defining a reservoir for containing cell culture media and an opening in fluid communication with the reservoir. The cell culture assembly further includes a filter valve assembly configured to sealingly engage the opening. The filter valve assembly includes a flexible membrane, a contiguous side wall, an end wall, and a microbial filter. The end wall has an opening and extends across one end of the side wall to form a major cavity within the side wall and the end wall. The flexible membrane has a slit spanning the membrane and is disposable within the major cavity such that the membrane sealingly divides the major cavity into (i) a chamber formed between the end wall and the membrane and (ii) a minor cavity formed by the membrane and a portion of the side wall. The minor cavity is in fluid communication with the reservoir. The slit is biased in a closed position to prevent fluid from passing from the minor cavity into the chamber and is configured to open to allow gas to pass from the minor cavity into the chamber when the pressure differential across the membrane is above a threshold. The filter is disposed between the membrane and the opening such that air flowing through the opening in the end wall into the chamber passes through the filter.
Abstract:
A device for minimizing the formation of bubbles or foam in cell culture is disclosed. The device has a manifold which directs the inflow of cells and cell culture media into a cell culture vessel so as to allow for displaced air or gas to vent from the cell culture vessel without mixing with the incoming cell culture media, thereby preventing the mixing of air and cell culture media and minimizing the formation of bubbles or foam inside the cell culture vessel.
Abstract:
A class of designs is provided for a permeable support where the design principle includes a permeable support layer, such as a membrane, bonded midway between two arrays of wells or multiwell plates, attached at their bottom portions, forming a double-sided multiwell plate. Thus, opposite facing wells on either side of the permeable support layer are accessible by inversion of the double-sided multiwell plate. Well fluid is held in place in the novel multiwell plate by capillary forces in the case of aligned upper and lower well arrays or by surface tension on patterned well regions on a permeable membrane layer. No additional components are necessary to form compartments for fluid retention. These new plate designs allow the surface area of the permeable support layer to be maximized, eliminate potential wicking and cross contamination issues that may arise from multiple component sidewalls, and take advantage of the small well diameters to retain fluid by utilizing the effects of surface tension or capillary forces.
Abstract:
The present invention provides a multi-layer cell culture device having a rectangular footprint and having multiple cell culture chambers separated by tracheal air spaces, each cell culture chamber having a port and a port cover or an external manifold structured and arranged to allow for transfer of fluid into and out of the cell culture device with reduced risk of contamination, and methods of using the device.
Abstract:
Cell culture apparatuses and methods for culturing cells include bags for culturing cells. The bags are folded and unfolded to control cell culture conditions. As the bags are folded, segmented sealed chambers for culturing cells are formed. As the bags are unfolded, the segments are unsealed allowing for exchange of fluid between the regions of the subchambers.
Abstract:
A cell culture apparatus includes a housing(10), a bag(50a-e) and an inflatable bladder (40). The bag is disposed in the housing and has an interior surface defining a chamber for culturing cells. The bladder is disposed in the housing, external to the bag, and is sufficiently inflatable and expandable to exert pressure on the bag when the chamber is substantially free of fluid. The bladder may be inflated and expanded to reduce movement of the bag within the housing. Alternatively, or in addition, the bladder may be inflated and expanded to apply a mechanical stress on cells cultured within the chamber of the bag.
Abstract:
An assembly for culturing cells includes a housing defining a reservoir for containing cell culture media and an opening in fluid communication with the reservoir. The cell culture assembly further includes a filter valve assembly configured to sealingly engage the opening. The filter valve assembly includes a flexible membrane, a contiguous side wall, an end wall, and a microbial filter. The end wall has an opening and extends across one end of the side wall to form a major cavity within the side wall and the end wall. The flexible membrane has a slit spanning the membrane and is disposable within the major cavity such that the membrane sealingly divides the major cavity into (i) a chamber formed between the end wall and the membrane and (ii) a minor cavity formed by the membrane and a portion of the side wall. The minor cavity is in fluid communication with the reservoir. The slit is biased in a closed position to prevent fluid from passing from the minor cavity into the chamber and is configured to open to allow gas to pass from the minor cavity into the chamber when the pressure differential across the membrane is above a threshold. The filter is disposed between the membrane and the opening such that air flowing through the opening in the end wall into the chamber passes through the filter.
Abstract:
The present invention provides a multi-layer cell culture device having a rectangular footprint and having multiple cell culture chambers separated by tracheal air spaces, each cell culture chamber having a port and a port cover or an external manifold structured and arranged to allow for transfer of fluid into and out of the cell culture device with reduced risk of contamination, and methods of using the device.
Abstract:
A multilayered cell culture apparatus for the co-culturing of at least two cell types is disclosed. The cell co-culture apparatus is defined as an integral structure having a plurality of cell culture chambers in combination with tracheal space(s). The body of the apparatus has imparted therein gas permeable membranes in combination with tracheal spaces that will allow the free flow of gases between some cell culture chambers and the external environment. In addition, some cell culture chambers may have limited access to air creating relatively lower oxygen content cell culture chambers. The size of the apparatus, and location of an optional neck section, allows for its manipulation by standard automated assay equipment, further making the apparatus amenable to high throughput applications.