Trypsin-EDTA

Trypsin-EDTA solution is a mixture commonly used for cell and tissue dissociation. Trypsin is a digestive protease, usually of porcine origin, that is used for its strong proteolytic action. As an endopeptidase, it cleaves proteins internally at lysine and arginine residues. EDTA is a chelator that sequesters metal ions such as calcium and magnesium. EDTA enhances the cleavage ability of trypsin to help weaken cell adhesion in cell suspensions. In some formulations, phenol red is added as a pH indicator. Among its applications, Trypsin-EDTA can be used to generate single-cell lines for stem cell research.