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Entry inhibitors, also known as fusion inhibitors, are a class of antiviral drugs that prevent a virus from entering a cell, for example, by blocking a receptor. Entry inhibitors are used to treat conditions such as HIV and hepatitis D .
Drugs that disrupt fusion of virus and target cell are termed entry inhibitors or fusion inhibitors. [citation needed] HIV binds to the host CD4+ cell receptor via the viral protein gp120; gp41, a viral transmembrane protein, then undergoes a conformational change that assists in the fusion of the viral membrane to the host cell membrane ...
Antiretroviral drugs are used to manage HIV/AIDS.Multiple antiretroviral drugs are often combined into a single pill in order to reduce pill burden.. Some of these combinations are complete single-tablet regimens; the others must be combined with additional pills to make a treatment regimen.
Entry inhibitors (or fusion inhibitors) interfere with binding, fusion and entry of HIV-1 to the host cell by blocking one of several targets. Maraviroc, enfuvirtide and Ibalizumab are available agents in this class. Maraviroc works by targeting CCR5, a co-receptor located on human helper T-cells.
Phage display was used to identify peptides that bind the HIV-1 capsid protein, and the most promising peptide inhibitor was the Capsid Assembly Inhibitor (CAI) peptide. [17] CAI prevented the formation of mature capsids, but its poor permeability in cells limited its use. [ 17 ]
Integrase inhibitors (INIs) are a class of antiretroviral drug designed to block the action of integrase, a viral enzyme that inserts the viral genome into the DNA of the host cell. Since integration is a vital step in retroviral replication, blocking it can halt further spread of the virus.
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