Abstract
Human papillomavirus (HPV) infections are the cause of warts, lesions and
cancer, with different types of HPV causing different symptoms. HPV infections are the
primary cause of cervical cancer. There are over 220 different types of HPV, and only
nine of these can currently be vaccinated. There is a need to treat these viral infections
without just treating the symptoms of the infection, as is currently the main method. There
is a wide range of small molecules that have been used to inhibit various stages of the
HPV infectious cycle. This review examined 132 small molecules from 121 studies that
specifically target aspects of HPV infections. HPV DNA encodes for six early genes (E1
to E7, skipping E3) and two late genes (L1 and L2). According to the results, these targets
for small molecule inhibitors fall into three categories: those targeting E1 and E2, targeting
E6 and E7 and, finally, targeting L1 and L2. Inhibitors of E6 and E7 are the most
widely studied targets, with the majority of HPV inhibition in this area. While compounds
targeting both E1/E2 and E6/E7 have made it to clinical trials, there has been no significant
advancement on the topic.
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