Extra-nuclear and cytoplasmic steroid receptor signalling in hormone dependent cancers

Stephanie Agbana1, Marie McIlroy1

  • 1Androgens in Health and Disease research group, RCSI University of Medicine and Health Sciences, Dublin, Ireland; Department of Surgery, RCSI University of Medicine and Health Sciences, Ireland.

Insights

Steroid hormones act through genomic and non-genomic pathways. This review highlights recent advances in non-genomic steroid action and receptor biology, crucial for understanding endocrine cancers.

Area of Science:

  • Endocrinology
  • Molecular Biology
  • Oncology

Background:

  • Steroid hormone receptors mediate hormone action via genomic and non-genomic pathways.
  • Genomic understanding has advanced with omics research, but non-genomic actions are also critical.
  • Steroid hormone actions are simultaneous and reciprocal, requiring a holistic cell-based evaluation.

Purpose of the Study:

  • To review recent developments in non-genomic steroid action.
  • To discuss cytoplasmic steroid hormone receptor biology in endocrine cancers.
  • To focus on 3-keto steroid receptors, especially the androgen receptor.

Main Methods:

  • Literature review of recent scientific publications.
  • Focus on omics-based research and non-genomic signaling pathways.
  • Analysis of cytoplasmic steroid hormone receptor roles.

Main Results:

  • Steroid hormones exhibit rapid non-genomic signaling alongside genomic effects.
  • Cytoplasmic receptor activity plays a significant role in endocrine-related cancers.
  • Androgen receptor (AR) is a key focus within 3-keto steroid receptors.

Conclusions:

  • A comprehensive understanding of both genomic and non-genomic steroid actions is essential.
  • Non-genomic actions and cytoplasmic receptor dynamics are vital in endocrine cancer biology.
  • Further research into these mechanisms, particularly AR, is needed for therapeutic strategies.

Related Concept Videos

Internal Receptors01:31

Internal Receptors

Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.
69.9K
Types of Receptors: Internal Receptors01:07

Types of Receptors: Internal Receptors

Many cellular signals are hydrophilic and cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind intracellular receptors that reside within the cell cytoplasm or nucleus. Many mammalian steroid hormones and nitric oxide (NO) gas use this cell signaling mechanism.
Similar to membrane-bound receptors, the binding of a ligand to the intracellular receptor of causes a conformational change in the...
24.0K
Endocrine Signaling01:45

Endocrine Signaling

Endocrine cells produce hormones to communicate with remote target cells found in other organs. The hormone reaches these distant areas using the circulatory system. This exposes the whole organism to the hormone but only those cells expressing hormone receptors or target cells are affected. Thus, endocrine signaling induces slow responses from its target cells but these effects also last longer.
64.2K
Signal Transduction: Overview01:26

Signal Transduction: Overview

Cells respond to many types of information, often through receptor proteins positioned on the membrane. They respond to chemical signals, such as hormones, neurotransmitters, and other signaling molecules, initiating a series of molecular reactions to produce an appropriate response. This is called signal transduction. Cells also coordinate different responses elicited by the same signaling molecule via mediators, allowing molecular cross-talk.
Typically, signal transduction involves three...
8.4K
Intracellular Hormone Receptors01:08

Intracellular Hormone Receptors

Lipid-soluble hormones diffuse across the plasma and nuclear membrane of target cells to bind to their specific intracellular receptors. These receptors act as transcription factors that regulate gene expression and protein synthesis in the target cell
55.2K
Transducer Mechanism: Nuclear Receptors01:31

Transducer Mechanism: Nuclear Receptors

Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
1.3K