Steroid receptor activation in developing brain influences a variety of cellular processes that endure into adulthood, altering both behavior and physiology. We report that estrogen receptors can be activated in a ligand-independent manner within developing brain by membrane dopamine receptors. Neonatal treatment with either estradiol or a dopamine D1 receptor agonist can increase the expression of an estrogen receptor-regulated gene (i.e. progestin receptors) and later juvenile social play. More importantly, increases in social play behavior induced by neonatal treatment with estradiol or a dopamine D1 receptor agonist can be prevented by prior treatment with an estrogen receptor antagonist. This suggests that changes in dopamine transmission in developing brain can activate estrogen receptors in a ligand-independent manner to influence gene expression and have lasting consequences on social behavior.
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http://dx.doi.org/10.1210/en.2005-0498 | DOI Listing |
Nat Commun
December 2024
Center for Development and Regeneration, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.
Somatic cells can be reprogrammed into pluripotent stem cells (iPSCs) by overexpressing defined transcription factors. Specifically, overexpression of OCT4 alone has been demonstrated to reprogram mouse fibroblasts into iPSCs. However, it remains unclear whether any other single factor can induce iPSCs formation.
View Article and Find Full Text PDFNat Commun
December 2024
Pharmacology Graduate Program, Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, Cornell University, New York, NY, USA.
Ovarian-derived estrogen can signal non-canonically at membrane-associated receptors in the brain to rapidly regulate neuronal function. Early alcohol drinking confers greater risk for alcohol use disorder in women than men, and binge alcohol drinking is correlated with high estrogen levels, but a causal role for estrogen in driving alcohol drinking has not been established. We found that female mice displayed greater binge alcohol drinking and reduced avoidance when estrogen was high during the estrous cycle than when it was low.
View Article and Find Full Text PDFNeuro Endocrinol Lett
December 2024
Di Bella Foundation, Via Guglielmo Marconi 51 Bologna, 40122 Italy.
Objectives: Triple negative breast cancer (TNBC) is a distinct subtype of breast cancer that has a poor prognosis due to the lack of effective therapeutic agents. Since a significant proportion of human surgical samples of TNBC expressed mRNA for the growth hormone (GH), growth hormone-releasing hormone (GHRH), and gonadotropin-releasing hormone (GnRH) receptors, and the mitogenic proliferative activity of GH, GHRH, and GnRH, have been identified as effective therapeutic targets for somatostatin and its analogs and GnRH analogs, Di Bella Method (DBM), a combination of hormonal analogs and vitamins, was introduced to target and inhibit solid tumors. The present study aimed to improve the prognosis of TNBC using DBM in women with TNBC.
View Article and Find Full Text PDFJ Biol Chem
December 2024
Laboratory of Reproductive Neurobiology, HUN-REN Institute of Experimental Medicine, Budapest, 1083 Hungary. Electronic address:
We developed a versatile 'IHC/LCM-Seq' method for spatial transcriptomics of immunohistochemically detected neurons collected with laser-capture microdissection (LCM). IHC/LCM-Seq uses aluminon and polyvinyl sulfonic acid for inventive RNA-preserving strategies to maintain RNA integrity in free-floating sections of 4% formaldehyde-fixed brains. To validate IHC/LCM-Seq, we first immunostained and harvested striatal cholinergic interneurons with LCM.
View Article and Find Full Text PDFFront Immunol
December 2024
Medical Oncology Department, Hospital Arnau de Vilanova, Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana (FISABIO), Valencia, Spain.
Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer characterized by the absence of progesterone and estrogen receptors and low (or absent) HER2 expression. TNBC accounts for 15-20% of all breast cancers. It is associated with younger age, a higher mutational burden, and an increased risk of recurrence and mortality.
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