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J Mater Chem B ; 9(23): 4620-4642, 2021 06 16.
Article in English | MEDLINE | ID: covidwho-1240778


Despite significant accomplishments in developing efficient rapid sensing systems and nano-therapeutics of higher efficacy, the recent coronavirus disease (COVID-19) pandemic is not under control successfully because the severe acute respiratory syndrome virus (SARS-CoV-2, original and mutated) transmits easily from human to -human and causes life-threatening respiratory disorders. Thus, it has become crucial to avoid this transmission through precautions and keep premises hygienic using high-performance anti-viral nanomaterials to trap and eradicate SARS-CoV-2. Such an antiviral nano-system has successfully demonstrated useful significant contribution in COVID-19 pandemic/endemic management effectively. However, their projection with potential sustainable prospects still requires considerable attention and efforts. With this aim, the presented review highlights various severe life-threatening viral infections and the role of multi-functional anti-viral nanostructures with manipulative properties investigated as an efficient precative shielding agent against viral infection progression. The salient features of such various nanostructures, antiviral mechanisms, and high impact multi-dimensional roles are systematically discussed in this review. Additionally, the challenges associated with the projection of alternative approaches also support the demand and significance of this selected scientific topic. The outcomes of this review will certainly be useful to motivate scholars of various expertise who are planning future research in the field of investigating sustainable and affordable high-performance nano-systems of desired antiviral performance to manage not only COVID-19 infection but other targeted viral infections as well.

Antiviral Agents/pharmacology , COVID-19/prevention & control , Coated Materials, Biocompatible/chemistry , Models, Biological , Nanostructures/chemistry , Antiviral Agents/chemistry , COVID-19/epidemiology , COVID-19/virology , Coated Materials, Biocompatible/pharmacology , Humans , Nanostructures/therapeutic use , SARS-CoV-2/isolation & purification
ACS Appl Bio Mater ; 4(4): 2974-2995, 2021 04 19.
Article in English | MEDLINE | ID: covidwho-1157888


The current scenario, an ongoing pandemic of COVID-19, places a dreadful burden on the healthcare system worldwide. Subsequently, there is a need for a rapid, user-friendly, and inexpensive on-site monitoring system for diagnosis. The early and rapid diagnosis of SARS-CoV-2 plays an important role in combating the outbreak. Although conventional methods such as PCR, RT-PCR, and ELISA, etc., offer a gold-standard solution to manage the pandemic, they cannot be implemented as a point-of-care (POC) testing arrangement. Moreover, surface-enhanced Raman spectroscopy (SERS) having a high enhancement factor provides quantitative results with high specificity, sensitivity, and multiplex detection ability but lacks in POC setup. In contrast, POC devices such as lateral flow immunoassay (LFIA) offer rapid, simple-to-use, cost-effective, reliable platform. However, LFIA has limitations in quantitative and sensitive analyses of SARS-CoV-2 detection. To resolve these concerns, herein we discuss a unique modality that is an integration of SERS with LFIA for quantitative analyses of SARS-CoV-2. The miniaturization ability of SERS-based devices makes them promising in biosensor application and has the potential to make a better alternative of conventional diagnostic methods. This review also demonstrates the commercially available and FDA/ICMR approved LFIA kits for on-site diagnosis of SARS-CoV-2.

COVID-19/diagnosis , Immunoassay/methods , Point-of-Care Systems , Spectrum Analysis, Raman , Viral Proteins/immunology , Antibodies, Immobilized/chemistry , Antibodies, Immobilized/immunology , Antibodies, Viral/blood , Antibodies, Viral/immunology , Biomarkers/blood , Biomarkers/metabolism , COVID-19/virology , Humans , SARS-CoV-2/isolation & purification , SARS-CoV-2/metabolism , Viral Proteins/metabolism