Development of anti-HIV peptides based on a viral capsid protein
2017
Peptide inhibitors with cell permeability targeting an HIV-1 capsid (CA) protein might make therapeutic by regulating HIV-1 replication. Overlapping fragment peptide libraries covering the whole sequence of an HIV-1 CA protein have been synthesized with the addition of an octa-arginyl moiety to increase their cell permeability. Amongst these peptides, several compounds which inhibit the HIV-1 replication cycle have been found. Conjugation of cell-penetrating functions such as an octa-arginyl group to individual peptides in combination with the addition of chloroquine in cell-based anti-HIV assays was previously proven to be a useful assay method with which to search for active peptides. Anti-HIV assays have been performed in the presence or absence of chloroquine and found that most of compounds have higher anti-HIV activity in the presence, rather than in the absence of chloroquine. Some potent seeds as anti-HIV agents might naturally lie hidden in CA proteins, and could become useful leads to HIV inhibitors.
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