Immobilization platform to induce quiescence in dormancy-capable cancer cells
2017
Cancer dormancy emerges when tumor cells cease to proliferate but remain alive in a quiescent state. Recent evidence suggests that cancer cells can stay dormant in a patient’s body for years before returning to a proliferative state, leading to cancer relapse. The lack of a system to efficiently identify and study dormant cancer cells is currently limiting further diagnostic and treatment developments to prevent cancer relapse. Herein, we present a novel encapsulation platform to identify and study dormancy-capable cancer cells in a quiescent state by inhibiting proliferation through physical confinement. The platform involves the encapsulation of cells within a stiff silica-PEG hydrogel produced by a sol–gel technique. Cells are immobilized in a nondegradable microenvironment where proliferation and movement are inhibited due to physical confinement of the gel. The platform was tested using non-cancerous cell lines HFF, HUVEC, Jurkat, MEF, and MCF-10A, and cancer cell lines LnCAP, MCF-7, MCF10DCIS.com, M...
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