- Dispase II is a neutral protease widely used in biological research for gentle dissociation of tissues, separation of cell layers, and preparation of viable single‑cell suspensions. Derived from Bacillus polymyxa, Dispase II cleaves extracellular matrix proteins such as fibronectin, collagen IV, and laminin without significantly damaging cell membranes or surface receptors. Its mild enzymatic profile makes it ideal for workflows requiring high cell viability, intact cell–surface markers, and minimal proteolytic stress. Dispase II is frequently used in tissue dissociation, epithelial‑cell isolation, organoid preparation, and regenerative‑medicine studies.
- Dispase II acts by selectively degrading basement‑membrane components, allowing researchers to separate intact epithelial sheets, detach cells from culture surfaces, or gently dissociate tissues such as skin, lung, mammary gland, and embryonic structures. In organoid workflows, Dispase II is used to break down extracellular matrix gels such as Matrigel® without harming organoid integrity, enabling passaging, plating, or downstream analysis. In stem‑cell research, Dispase II supports isolation of pluripotent stem‑cell colonies by lifting them as intact clusters rather than fully dissociated single cells, preserving colony morphology and improving survival. Its gentle action also makes it suitable for isolating primary epithelial cells, keratinocytes, and airway cells, where preservation of cell–surface proteins is essential for downstream assays.
- Several manufacturers supply high‑quality Dispase II formulations for research applications. Sigma‑Aldrich (Merck) offers Dispase II in lyophilised and solution forms, widely used for epithelial‑cell isolation and organoid workflows. Roche (now part of Sigma‑Aldrich’s catalogue) historically provided Dispase II with highly consistent activity, making it a standard reagent in developmental‑biology protocols. STEMCELL Technologies includes Dispase II in specialised organoid and epithelial‑cell dissociation kits, ensuring reproducible results across complex tissue systems. These formulations vary in activity units, purity, and buffer compatibility, allowing researchers to select the optimal reagent for their specific tissue type and experimental design.
- Effective use of Dispase II requires careful control of enzyme concentration, incubation time, and temperature. Because Dispase II is milder than collagenase or trypsin, digestion times may be longer, but cell viability is typically higher. Pre‑warming the enzyme solution enhances activity, while gentle mechanical agitation improves dissociation efficiency. Over‑digestion should be avoided, as prolonged exposure may weaken cell–cell junctions more than intended. After digestion, Dispase II activity is typically neutralised using serum‑containing medium or by washing cells thoroughly with buffer. When used correctly, Dispase II provides reproducible, gentle dissociation suitable for sensitive cell types and complex tissue structures.
- Overall, Dispase II remains a cornerstone reagent in epithelial‑cell biology, organoid research, and tissue‑engineering workflows. Its ability to degrade basement‑membrane proteins without harming cell viability supports high‑quality cell isolation across developmental biology, stem‑cell science, regenerative medicine, and epithelial‑tissue research. Whether used alone or in combination with enzymes such as collagenase or hyaluronidase, Dispase II provides controlled and efficient dissociation that preserves cellular integrity and supports downstream experimental success.
