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Interrogating Cellular Functions with Designer Janus Particles
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DOI：10.1021/acs.chemmater.6b05322.png)
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Abstract
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Janus particles have two distinct surfaces or compartments. This enables novel applications that are impossible with homogeneous particles, ranging from the engineering of active colloidal metastructures to creating multimodal therapeutic materials. Recent years have witnessed a rapid development of novel Janus structures and exploration of their applications, particularly in the biomedical arena. It, therefore, becomes crucial to understand how Janus particles with surface or structural anisotropy might interact with biological systems and how such interactions may be exploited to manipulate biological responses. This perspective highlights recent studies that have employed Janus particles as novel toolsets to manipulate, measure, and understand cellular functions. Janus particles have been shown to have biological interactions different from uniform particles. Their surface anisotropy has been used to control the cell entry of synthetic particles, to spatially organize stimuli for the activation of immune cells, and to enable direct visualization and measurement of rotational dynamics of particles in living systems. The work included in this perspective showcases the significance of understanding the biological interactions of Janus particles and the tremendous potential of harnessing such interactions to advance the development of Janus structure-based biomaterials.
Keywords:
ANTIGEN-PRESENTING CELLS
IMMUNOLOGICAL SYNAPSE
T-CELLS
ROTATIONAL-DYNAMICS
MECHANICAL-PROPERTIES
ADOPTIVE TRANSFER
SHAPE DEPENDENCE
DENDRITIC CELLS
REMOTE-CONTROL
DRUG-DELIVERY
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