Engineered modular biomaterial logic gates for environmentally triggered therapeutic delivery.

Engineered modular biomaterial logic gates for environmentally triggered therapeutic delivery.
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DOI:
10.1038/nchem.2917
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发表时间:
2018-03
期刊:
影响因子:
21.8
通讯作者:
DeForest CA
DeForest CA
中科院分区:
化学1区
文献类型:
--
作者:
Badeau BA;Comerford MP;Arakawa CK;Shadish JA;DeForest CA

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The successful transport of drug- and cell-based therapeutics to diseased sites represents a major barrier in the development of clinical therapies. Targeted delivery can be mediated through degradable biomaterial vehicles that utilize disease biomarkers to trigger payload release. Here, we report a modular chemical framework for imparting hydrogels with precise degradative responsiveness by using multiple environmental cues to trigger reactions that operate user-programmable Boolean logic. By specifying the molecular architecture and connectivity of orthogonal stimuli-labile moieties within material crosslinkers, we show selective control over gel dissolution and therapeutic delivery. To illustrate the versatility of this methodology, we synthesized seventeen distinct stimuli-responsive materials that collectively yielded all possible YES/OR/AND logical outputs from input combinations involving enzyme, reductant, and light. Using these hydrogels we demonstrate the first sequential and environmentally stimulated release of multiple cell lines in well-defined combinations from a material. We expect these platforms will find utility in several diverse fields including drug delivery, diagnostics, and regenerative medicine.
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