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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Expression of keratins in mouse vaginal epithelium.

In the epithelium of the rodent vagina proliferation and differentiation are tightly regulated by ovarian hormones. Estrogens stimulate proliferation and squamous differentiation, whereas progesterone redirects differentiation to a mucus-secreting epithelium formed by goblet-like cells. In the present study, we used monospecific keratin antibodies to show the expression and distribution of keratins in SENCAR mouse vaginal epithelium in different stages of the estral cycle and in ovariectomized animals. In ovariectomized animals, the vaginal epithelium expressed K6, K8, K13 and K14, but not K1. After estrogen treatment, K1 was expressed. During proestrus and estrus, the keratin pattern was essentially identical to that observed in 17 beta-estradiol-stimulated animals. In contrast, during the progestational stages (metaestrus and diestrus) or after progesterone treatment of ovariectomized mice, the most relevant change was the loss of K1. Together, these results show that K1 expression is induced by estrogens in the vaginal epithelium. In contrast, K6, K8, K13 and K14 are constitutively expressed even when squamous differentiation is not observed.[1]


  1. Expression of keratins in mouse vaginal epithelium. Gimenez-Conti, I.B., Lynch, M., Roop, D., Bhowmik, S., Majeski, P., Conti, C.J. Differentiation (1994) [Pubmed]
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