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Adrenoceptors: non conventional target for breast cancer?

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Prisijungti Registracija

Epinephrine and Norepinephrine, typically released during stress bind to nine different adrenoceptors (AR) which classically control the cardiovascular and respiratory systems. New targets were described for the many agonists and antagonists developed for these AR, as the central nervous system.

Contribution of alpha2-adrenoceptors to the mitogenic effect of catecholestrogen in human breast cancer MCF-7 cells.

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Catecholestrogens are estrogen metabolites formed by hydroxylation of 17beta-estradiol and estrone at either the C-2 or C-4 position, rivaling the parent estrogens in concentration. The objective of the present work was to assess if their catechol group could make them induce proliferation of human

Alpha2-adrenoceptor agonists trigger prolactin signaling in breast cancer cells.

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Prisijungti Registracija

Breast cancer is the most frequent malignancy among women worldwide. We have described the expression of α2-adrenoceptors in breast cancer cell lines, associated with increased cell proliferation and tumor growth. A mitogenic autocrine/paracrine loop of prolactin (Prl) has been described in breast

Involvement of α2- and β2-adrenoceptors on breast cancer cell proliferation and tumour growth regulation.

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OBJECTIVE β-Adrenoceptors are expressed in human and experimental animal breast cancer cells. However, the effect of the agonists and antagonists reported on cell proliferation and tumour growth was paradoxical, precluding their utilization as possible adjuvant therapy, mainly in the cases of

α(2)-Adrenoceptors enhance cell proliferation and mammary tumor growth acting through both the stroma and the tumor cells.

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We have previously described enhanced human breast cancer cell proliferation and mouse mammary tumor growth induced by α(2)-adrenoceptor (α(2)-AR) expression in epithelial cells. The aim of the present work was to assess if stromal fibroblasts can contribute to this effect. α(2)-AR expression was

Alpha2-adrenoceptor action on cell proliferation and mammary tumour growth in mice.

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OBJECTIVE Breast cancer, the most common cancer in women in most countries, is a highly stressful disease. Catecholamines released during stress bind to adrenoceptors and we have recently described alpha(2)-adrenoceptors in human breast cell lines, linked to enhanced cell proliferation. The purpose

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