Estrogen and ER?: Culprits in Cervical Cancer?
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Abstract
Estrogen and its receptors are implicated in the promotion and prevention of various cancers. While the uterine cervix is highly responsive to estrogen, the role of estrogen in cervical cancer, which is strongly associated with human papillomavirus (HPV) infections, is poorly understood. Recent studies in HPV transgenic mouse models provide evidence that estrogen and its nuclear receptor promote cervical cancer in combination with HPV oncogenes. While epidemiological studies further support this hypothesis, there is little experimental data assessing the hormonal responsiveness of human cervical cancers. If these cancers are dependent upon estrogen, then drugs targeting estrogen and its receptors may be effective in treating and/or preventing cervical cancer, the second leading cause of death by cancer amongst women worldwide.