The study aimed to explore how lyophilization (a freeze-drying process) affects the biological activity of recombinant lentiviral vectors carrying bone morphogenetic protein 2 (BMP-2).
Prior to and after lyophilization, tests showed no significant change in how the lyophilized lenti-BMP-2 affected the proliferation of rat bone marrow stromal cells (BMSCs) or the expression of key proteins like BMP-2.
The results indicate that using trehalose in the lyophilization process effectively preserves the activity of lenti-BMP-2, making it a reliable method for long-term storage.