Abstract
The advent of DNA nanotechnology has paved the way for the development of nanoscale robotics capable of executing smart and sophisticated tasks in a programmed and automatic manner. The programmability and customizable functionality of designer DNA nanorobots interfacing with biology would offer great potential for basic and applied research in the interdisciplinary fields of chemistry, biology, and medicine. This review aims to summarize the latest progress in designer DNA nanorobotics enabling programmable functions. We first describe the state-of-art engineering principles and the functional modules used in the rational design of a dynamic DNA nanorobot. Subsequently, we summarize the distinct types of DNA nanorobots performing sensing tasks, sensing-and-actuation, or continuous actuation, highlighting the versatility of designer DNA nanorobots in accurate biosensing, targeted drug delivery, and autonomous molecular operations to promote desired cellular behavior. Finally, we discuss the challenges and opportunities in the development of functional DNA nanorobotics for biomedical applications. We envision that significant progress in DNA-enabled nanorobotics with programmable functions will improve precision medicine in the future.
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