NIR-activated content release from plasmon resonant liposomes for probing single-cell responses.

ABSTRACT: Technological limitations have prevented the interrogation and manipulation of cellular activity in response to bioactive molecules within model and living systems that is required for the development of diagnostic and treatment modalities for diseases, such as cancer. In this work, we demonstrate that gold-coated liposomes are capable of encapsulation and on-demand release of signaling molecules with a spatial and temporal resolution leading to activation of individual cells. As a model system, we used cells modified to overexpress a certain G-protein coupled receptor, the CCK2 receptor, and achieved its activation in a single cell via the localized release of its agonist. This content release was triggered by illumination of the liposomes at wavelengths corresponding to the plasmon reson

SUBMITTER: Leung SJ 

PROVIDER: S-EPMC3739835 | biostudies-literature | 2012 Nov

REPOSITORIES: biostudies-literature