Provided herein are systems and methods for molecule delivery into cells. The method may include steps of forming a solution comprising an amount of microbubbles, an amount of soluble molecules, and one or more cells, flowing the solution through a microfluidic device, and sonicating the solution for a period of time sufficient to form pores in the one or more cells. In particular, such methods may be used for preservation of cells through delivery of a preservation agent.
