Proceedings of MATSUS Fall 2023 Conference (MATSUSFall23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.110
Publication date: 18th July 2023
Signaling in physiological environments relies on physicochemical cues and biomolecular that are all processed by the cellular machinery to execute a specific response. In this presentation, designer functional peptides will be discussed as synthetically engineered materials that could enable the transduction of light to cellular cues for controlling the behavior and anisotropy of excitable cells such as cardiomyocytes. First, the structural tunability of the assembly behavior of peptides bearing optoelectronic π-conjugated units in aqueous solutions and on surfaces to generate nano- and micropatterns are discussed. While the supramolecular assemblies of these peptides can have dynamic structures in physiologically relevant solutions, on surfaces that have anisotropic topography, the resulting self-assembled optoelectronic peptides can be directed to form 1-D nanostructures with ordered molecular interactions between π-units. Additionally, fabrication approaches that allow for the generation of micropatterns of π-conjugated peptides that are stable under electrolytic cell culture media will be shown. The distinct capability of these patterned π-conjugated peptides to align cardiomyocytes interfaced with these materials will also be discussed. This property provides the potential opportunity for directional stimulation of excitable cells with spatiotemporal control, especially when the stimulation is initiated using light. Finally, material design insights that allow for enhanced photoconduction by these designer peptides will also be presented. Overall, we envision these functional peptides as transducer biomaterials that can offer a new paradigm for having systematically controlled cell-material interactions towards tissue engineering and in vitro modeling applications for excitable cells.
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