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Estrogens act as a driving force of both healthy and cancerous mammary cell growth by binding to receptors that include a type named GPER, which is generally located in cell membranes. Recent studies have, however, revealed the unusual presence of this receptor in the nuclei of fibroblasts — cells of the connective tissue — surrounding mammary tumor cells. Researchers at the University of Geneva (UNIGE), Switzerland, have discovered that this is in fact another version of GPER, a nuclear variant of this receptor, with different properties. The fibroblasts carrying this variant promote the migration of neighboring malignant cells, thus participating in the process of tumor metastasis. This research, which may pave the way to a novel therapeutic strategy, is published in the journal Oncotarget.

See original article at: https://www.sciencedaily.com/releases/2017/06/170615100646.htm