Design of an ultrasound chamber for cellular excitation and observation.

In this work, a design of integrating ultrasonic transduction with live cell imaging chamber is introduced. The principle of a metal-incident-glass-output acoustic path was used to deliver a uniform energy profile into the imaging/incubation chamber in the form of leaky Lamb waves. The design was applied to examine living mouse mammary gland epithelial cells (EpH4). Significant changes in intracellular activities were observed even at a very low energy intensity level (1 MHz, I = 1 mW/cm, continuous wave). Live imaging with ultrasonic stimulation provides a different paradigm to interrogate cellular mechanosensitive responses in real time.