In developing an Application Specific Formulation, we generally rely on individuals considered “expert in the art” to ß-test potential formulations and guide us in the refinement of the final composition. These formulations are usually engineered from existing protocols and crude enzyme targets. Once a formulation has been identified and deemed acceptable by at least a
Application-specific formulations are pre-blended mixtures of purified collagenase and protease in optimal ratios for isolation of cells from a particular tissue and/or species. Currently, our CIzyme™ AS and CIzyme™ RI are our only two application-specific formulations.
There are two components to inactivation of the digestive enzymes commonly used for tissue dissociation. To inactivate protease activity, a serum-containing media or buffer is most effective. Buffers or media containing human serum albumin (HSA) are ineffective in suppressing protease activity, even at very high concentrations of protein (>10%). However, serum-containing buffers do not inhibit
VitaCyte’s technical service team has a significant amount of experience in transitioning from crude enzyme products to the more defined purified ones and is glad to provide you with assistance. If you can provide us details of the cell of interest; the enzyme product that is currently being used for the isolation; the concentrations (or