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In Vitro and In Vivo Toxicity of Black Phosphorus Nanosheets

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As a new kind of two-dimensional nanomaterial, black phosphorus (BP) nanosheets have attracted significant interests in diverse bioapplications due to their unique structure and physicochemical properties. Despite BP nanosheets’ advantages in cancer diagnosis and therapy applications, their biosafety issues are still unclear. Herein, we report a systematic study on the In Vitro and In Vivo toxicity of BP nanosheets. In Vitro experiments showed that BP nanosheets decrease the viability of human bronchial epithelial cells in a time- and dose-dependent manner. The mechanism study showed that BP nanosheets interfere with mitochondrial membrane potential, leading to an increase in intracellular ROS. These responses further initiated the activation of the caspase-3 and ultimately dictated cells to undergo apoptosis. Then, the In Vivo experiments of BP nanosheets revealed that single injection of BP nanosheets does not cause toxicity to mice in a short period of time, whereas multiple injections of BP nanosheets exert adverse effects on liver and renal function of mice. Interestingly, the liver and renal function of the mice returned to normal after a recovery period. Our findings provide insights into the rational design of BP nanosheets and guide their applications in biomedical fields.
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Keywords: Black Phosphorus Nanosheets; Cell Apoptosis; Liver Function; ROS; Renal Function

Document Type: Research Article

Affiliations: 1: School for Life Science, Shanxi University, Taiyuan 030006, China 2: State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China 3: The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215000, China 4: Shanxi Provincial Cancer Hospital, Taiyuan 030013, China

Publication date: February 1, 2020

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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