The epigenetic function of androgen receptor in prostate cancer progression

Takahiro Sawada1,2, Yoshiaki Kanemoto1,2, Tomohiro Kurokawa1,2,3

  • 1Graduate School of Life Science and Engineering, Iryo Sosei University, Fukushima, Japan.

Insights

Androgen receptor (AR) signaling drives prostate cancer progression, even in castration-resistant states. This review explores AR

Area of Science:

  • Molecular Oncology
  • Epigenetics
  • Endocrinology

Background:

  • Androgen deprivation therapy is a standard treatment for prostate cancer.
  • Most patients develop castration (drug)-resistant prostate cancer (CRPC) despite treatment.
  • Androgen receptor (AR) remains detectable and active in CRPC.

Purpose of the Study:

  • To review the transcriptional and epigenetic regulatory roles of AR in prostate cancer.
  • To highlight clinical applications of AR-targeting agents and coregulators.
  • To emphasize AR's role in chromatin reorganization during prostate cancer progression.

Main Methods:

  • Literature review of studies on AR function, epigenetics, and prostate cancer.
  • Analysis of AR signaling pathways and their role in therapeutic resistance.
  • Discussion of AR ligands, protein co-regulators, and enhancer RNAs.

Main Results:

  • AR mediates gene regulation through ligand-dependent transcriptional activity.
  • AR influences chromatin structure, contributing to epigenetic modifications.
  • AR signaling persists in CRPC, driving tumor progression and malignancy.

Conclusions:

  • AR plays a critical role in both hormone-dependent and castration-resistant prostate cancer.
  • Epigenetic regulation by AR is a key factor in the transition to CRPC.
  • Targeting AR pathways, including its coregulators and chromatin effects, offers therapeutic potential.

Related Concept Videos

Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
31.2K
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
3.8K
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
6.6K
The Ras Gene02:38

The Ras Gene

The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a...
6.3K
Testosterone: Functions and Regulation01:26

Testosterone: Functions and Regulation

The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
856
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.
70.4K