Understanding the structure of measles virus and its implications for novel drug discovery

INTRODUCTION: Despite having a stably effectively vaccine for decades, the Measles virus (MV) still causes periodic outbreaks given its highly contagious nature and a consistent decline in immunization coverage, which was further exacerbated during the COVID-19 pandemic, leading to reduced immunization rates. Equally concerning, there are also no approved treatments for measles. AREAS COVERED: Herein, the authors explore the current challenges of MV therapy discovery. Firstly, the article will provide an overview of the potential drug-targeted steps in the MV infection process, followed by discussion on the characteristics of existing drugs as well as the feasibility of structure-based drug discovery. Finally, the authors highlight the current progress in the field and the future opportunities for antiviral development. This article is based on a literature review including original publications, standard sources, the Protein Data Bank and clinical trials. EXPERT OPINION: First and foremost, a comprehensive structural analysis of neutralizing antibodies and RdRp inhibitors is required for efficient antiviral development. Moreover, the therapeutic prospects and current limitations for acute MV and subacute sclerosing panencephalitis (SSPE) treatments should be considered. Due to various factors including mutations, the development of broad-spectrum antivirals may minimize many of the existing barriers.