期刊
MOLECULES
卷 26, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/molecules26040986
关键词
coronavirus; SARS-CoV-1; SARS-CoV-2; MERS-CoV; nucleoside drugs; remdesivir; ribavirin; favipiravir; molnupiravir; sofosbuvir
Coronaviruses are a family of enveloped RNA viruses that cause a wide range of respiratory infections in mammals, including humans. Three human CoV species have led to severe respiratory diseases such as SARS, MERS, and the current COVID-19 pandemic. The emergence of SARS-CoV-2 in late 2019 has resulted in a global public health crisis, highlighting the urgent need for effective drugs to combat the infection. The repurposing of nucleoside derivatives is a promising strategy for quickly developing therapies against SARS-CoV-2 and other HCoV species.
Coronaviruses (CoVs) are positive-sense RNA enveloped viruses, members of the family Coronaviridae, that cause infections in a broad range of mammals including humans. Several CoV species lead to mild upper respiratory infections typically associated with common colds. However, three human CoV (HCoV) species: Severe Acute Respiratory Syndrome (SARS)-CoV-1, Middle East Respiratory Syndrome (MERS)-CoV, and SARS-CoV-2, are responsible for severe respiratory diseases at the origin of two recent epidemics (SARS and MERS), and of the current COronaVIrus Disease 19 (COVID-19), respectively. The easily transmissible SARS-CoV-2, emerging at the end of 2019 in China, spread rapidly worldwide, leading the World Health Organization (WHO) to declare COVID-19 a pandemic. While the world waits for mass vaccination, there is an urgent need for effective drugs as short-term weapons to combat the SARS-CoV-2 infection. In this context, the drug repurposing approach is a strategy able to guarantee positive results rapidly. In this regard, it is well known that several nucleoside-mimicking analogs and nucleoside precursors may inhibit the growth of viruses providing effective therapies for several viral diseases, including HCoV infections. Therefore, this review will focus on synthetic nucleosides and nucleoside precursors active against different HCoV species, paying great attention to SARS-CoV-2. This work covers progress made in anti-CoV therapy with nucleoside derivatives and provides insight into their main mechanisms of action.
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