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Light-Triggered Unique Shape Transformation of Giant Polymersomes with Tubular Protrusions.

We report here light-triggered unique shape transformation of calcein-loaded giant polymersomes with tubular protrusions, which serve as a reservoir membrane area during the shape transformation. Under irradiation at the excitation wavelength of calcein, the tubular protrusions form strings of budded vesicles and then reintegrate into the mother vesicle. The initial giant polymersomes transform to two connected spherical vesicles via two pathways to alleviate the osmotic pressure imbalance across the vesicle membrane. The two connected spherical vesicles further transform to a mother vesicle with an inner daughter vesicle after switching off the light to relieve the bending energy. Our finding provides a promising platform to mimic cell morphology changes. This article is protected by copyright. All rights reserved.