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Related Experiment Video

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Estrogen Receptor Functions and Pathways at the Vascular Immune Interface.

Aida Dama1, Chiara Baggio2, Carlotta Boscaro2

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|April 30, 2021
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Estrogen receptors (ERs) regulate cardiovascular health, influencing endothelial function and metabolism. Targeting these receptors offers potential for novel therapies, but subtype selectivity remains a challenge.

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Area of Science:

  • Cardiovascular biology
  • Endocrinology
  • Immunology

Background:

  • Estrogen receptors (ERs), including ERα, ERβ, and G protein-coupled estrogen receptor (GPER), play critical roles in cardiovascular physiology.
  • Estrogen signaling impacts endothelial function, glucose metabolism, and immune cell behavior, with gender-specific effects becoming increasingly apparent.
  • Cardiometabolic risk rises in women during menopause, highlighting the importance of understanding estrogen's vascular actions.

Purpose of the Study:

  • To explore the multifaceted roles of estrogen receptors in cardiovascular health and disease.
  • To investigate the mechanisms by which estrogen influences endothelial glycolysis and immune cell function.
  • To address the challenges in developing selective estrogen receptor modulators for therapeutic applications.

Main Methods:

  • Review of existing literature on estrogen receptor signaling pathways in the cardiovascular system.
  • Analysis of genomic and non-genomic effects mediated by nuclear and membrane-localized ERs.
  • Examination of estrogen's impact on endothelial cells, glucose metabolism (GLUT1, PFKFB3), and immune cell phenotypes (monocytes, macrophages).

Main Results:

  • Estrogen pathways, particularly via GPER, rapidly promote endothelial glycolysis by upregulating GLUT1 and PFKFB3.
  • Estrogens modulate monocyte and macrophage phenotypes, influencing the vascular immune response.
  • Current pharmacological agents lack ER subtype selectivity, complicating therapeutic development.

Conclusions:

  • Estrogen receptor activity is integral to cardiovascular homeostasis, affecting metabolism and immune responses.
  • Understanding estrogenic effects at the vascular immune interface is crucial for developing targeted therapies.
  • Novel therapeutic strategies require improved selectivity for specific estrogen receptor subtypes to mitigate cardiovascular risk.