Journal
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
Volume 9, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fbioe.2021.804563
Keywords
multiplexed regulation; optogenetic circuits; light-sensitive proteins; engineered photoreceptor modules; biotechnological applications; metabolic engineering
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Light-sensitive proteins play a crucial role in controlling cellular behaviors. Exploration and engineering of these proteins have contributed to the expansion of optogenetic toolboxes, enabling dynamic regulation of cells. Recent advancements include the design of complex systems incorporating multiple photoreceptors to coordinate cellular responses.
Owing to its ubiquity and easy availability in nature, light has been widely employed to control complex cellular behaviors. Light-sensitive proteins are the foundation to such diverse and multilevel adaptive regulations in a large range of organisms. Due to their remarkable properties and potential applications in engineered systems, exploration and engineering of natural light-sensitive proteins have significantly contributed to expand optogenetic toolboxes with tailor-made performances in synthetic genetic circuits. Progressively, more complex systems have been designed in which multiple photoreceptors, each sensing its dedicated wavelength, are combined to simultaneously coordinate cellular responses in a single cell. In this review, we highlight recent works and challenges on multiplexed optogenetic circuits in natural and engineered systems for a dynamic regulation breakthrough in biotechnological applications.
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