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- W2156831079 endingPage "9725" @default.
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- W2156831079 abstract "Retinoid X receptor (RXR) plays a central role in the regulation of intracellular receptor signaling pathways by acting as a ubiquitous heterodimerization partner of many nuclear receptors, including the orphan receptor Nur77 (also known as thyroid hormone receptor 3 or NGFI-B), which translocates from the nucleus to mitochondria, where it interacts with Bcl-2 to induce apoptosis. Here, we report that RXRα is required for nuclear export and mitochondrial targeting of Nur77 through their unique heterodimerization that is mediated by dimerization interfaces located in their DNA-binding domain. The effects of RXRα are attributed to a putative nuclear export sequence (NES) present in its carboxyl-terminal region. RXRα ligands suppress NES activity by inducing RXRα homodimerization or altering RXRα/Nur77 heterodimerization. The RXRα NES is also silenced by RXRα heterodimerization with retinoic acid receptor or vitamin D receptor. Consistently, we were able to show that the mitochondrial targeting of the RXRα/Nur77 heterodimer and its induction of apoptosis are potently inhibited by RXR ligands. Together, our results reveal a novel nongenotropic function of RXRα and its involvement in the regulation of the Nur77-dependent apoptotic pathway." @default.
- W2156831079 created "2016-06-24" @default.
- W2156831079 creator A5001969147 @default.
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- W2156831079 creator A5065859286 @default.
- W2156831079 creator A5073964846 @default.
- W2156831079 creator A5081363438 @default.
- W2156831079 date "2004-11-01" @default.
- W2156831079 modified "2023-10-18" @default.
- W2156831079 title "Retinoid X Receptor Regulates Nur77/Thyroid Hormone Receptor 3-Dependent Apoptosis by Modulating Its Nuclear Export and Mitochondrial Targeting" @default.
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