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- W148886213 abstract "Estrogen has been positively linked to the pathogenesis and growth of three common women's cancers (breast, endometrium and ovary). A single gene encodes the key enzyme for estrogen biosynthesis named aromatase, inhibition of which effectively eliminates estrogen production in the entire body. Aromatase inhibitors successfully treat breast cancer, whereas their roles in endometrial and ovarian cancers are less dear. Ovary, testis, adipose tissue, skin, hypothalamus and placenta express aromatase normally, whereas breast, endometrial and ovarian cancers overexpress aromatase and produce local estrogen exerting paracrine and intracrine effects. Tissue specific promoters distributed over a 93 kilobase regulatory region upstream of a common coding region alternatively control aromatase expression. A distinct set of transcription factors regulates each promoter in a signaling pathway- and tissue-specific manner. In cancers ofbreast, endometrium and ovary, aromatase expression is primarly regulated by increased activity of the proximally located promoter 1.3/II region. Promoters I.3 and II lie 215 bp from each other and are coordinately stimulated by PGE2 via a cAMP-PKA-dependent pathway. In breast adipose fibroblasts exposed to PGE2 secreted by malignant epithelial cells, activation of PKC potentiates cAMP-PKA-dependent induction ofaromatase. Thus, inflammatory substances such as PGE2 may play important roles in inducing local production of estrogen that promotes tumor growth." @default.
- W148886213 created "2016-06-24" @default.
- W148886213 creator A5009298625 @default.
- W148886213 creator A5062961824 @default.
- W148886213 date "2008-01-01" @default.
- W148886213 modified "2023-09-27" @default.
- W148886213 title "Aromatase Expression in Women’s Cancers" @default.
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- W148886213 doi "https://doi.org/10.1007/978-0-387-78818-0_8" @default.
- W148886213 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/18637488" @default.
- W148886213 hasPublicationYear "2008" @default.