Source abstract
Abstract
The rapid transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-driven infection signifies an ultimate challenge to global health, and the development of effective strategies for preventing and/or mitigating its effects are of the utmost importance. In the current study, an in-depth investigation for the understanding of the SARS-CoV-2 inactivation route using graphene oxide (GO) is presented. We focus on the antiviral effect of GO nanosheets on three SARS-CoV-2 strains: Wuhan, B.1.1.7 (U.K. variant), and P.1 (Brazilian variant). Plaque assay and real-time reverse transcription-polymerase chain reaction (RT-PCR) showed that 50 and 98% of the virus in a supernatant could be cleared following incubation with GO (100 μg/mL) for 1 and 60 min, respectively. Transmission electron microscopy (TEM) analysis and protein (spike (S) and nucleocapsid (N) proteins) decomposition evaluation confirm a two-step virus inactivation mechanism that includes (i) adsorption of the positively charged spike of SARS-CoV-2 on the negatively charged GO surface and (ii) neutralization/inactivation of the SARS-CoV-2 on the surface of GO through decomposition of the viral protein. As the interaction of S protein with human angiotensin-converting enzyme 2 (ACE2) is required for SARS-CoV-2 to enter into human cells, the damage to the S protein using GO makes it a potential candidate for use in contributing to the inhibition of the worldwide spread of SARS-CoV-2. Specifically, our findings provide the potential for the construction of an effective anti-SARS-CoV-2 face mask using a GO nanosheet, which could contribute greatly to preventing the spread of the virus. In addition, as the effect of surface contamination can be severe in the spreading of SARS-CoV-2, the development of efficient anti-SARS-CoV-2 protective surfaces/coatings based on GO nanosheets could play a significant role in controlling the spread of the virus through the utilization of GO-based nonwoven cloths, filters, and so on.
Source: openalex_inverted_index · Quality: baseline
Affiliations
Department of Chemistry, Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
Institute of Industrial Nanomaterials, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
Division of Molecular Virology and Genetics, Joint Research Center for Human Retrovirus Infection, Kumamoto University, 2-2-1 Honjo, Kumamoto 860-0811, Japan
Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
Department of Clinical Pathology, Faculty of Medicine, Suez Canal University, Ismailia 41511, Egypt
International Research Center for Medical Sciences, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
Priority Organization for Innovation and Excellence, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
School of Chemistry F11, The University of Sydney, Sydney, New South Wales 2006, Australia
Department of Anatomy and Neurobiology, Graduate School of Medical Sciences, Kumamoto University, 2-2-1 Honjo, Kumamoto 860-8556, Japan
Funding
Kumamoto University · Takeda Science Foundation · Japan Agency for Medical Research and Development · Adaptable and Seamless Technology Transfer Program through Target-Driven R and D · Japan Society for the Promotion of Science · Mitsubishi Foundation · Shin-Nihon Foundation of Advanced Medical Research