Secondary hormonal manipulations in prostate cancer

Charles J Ryan1

  • 1Urologic Oncology Program, UCSF Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA 94115, USA. ryanc@medicine.ucsf.edu

Insights

Treating advanced androgen receptor pathway-inhibited prostate cancer (AIPC) involves managing castrate testosterone levels and exploring various antiandrogen therapies. Research is ongoing for novel agents to improve treatment response and duration in AIPC patients.

Area of Science:

  • Oncology
  • Urology
  • Endocrinology

Background:

  • Advanced prostate cancer often progresses despite castrate testosterone levels.
  • Androgen receptor signaling remains crucial even in a low-testosterone environment.
  • Understanding resistance mechanisms is key for effective AIPC treatment.

Purpose of the Study:

  • To review current therapeutic strategies for advanced androgen receptor pathway-inhibited prostate cancer (AIPC).
  • To highlight the importance of managing castrate testosterone milieu and related phenomena.
  • To discuss emerging novel agents targeting AIPC.

Main Methods:

  • Review of clinical research data on AIPC therapies.
  • Analysis of treatment sequences and emerging drug development.
  • Focus on therapies affecting androgen receptor signaling.

Main Results:

  • Current data support maintaining castrate state and recognizing the androgen-acting androgen-deprived (AAWD) phenomenon.
  • Sequential oral antiandrogens, estrogens, or adrenal androgen-targeted therapies are indicated.
  • Novel agents are under development to enhance response rates and duration.

Conclusions:

  • Managing AIPC requires a multi-faceted approach targeting androgen receptor signaling.
  • Sequential therapies and novel agents show promise for improving outcomes.
  • Continued research is vital for advancing AIPC treatment strategies.

Related Concept Videos

Target Cell Response to Hormones01:22

Target Cell Response to Hormones

Hormones intricately bind to receptors on the surface or within target cells, initiating a cascade of cellular responses.
Notably, the cellular response can be regulated by altering the number of receptors expressed in the cell. For example, prolonged exposure to elevated hormone levels results in a gradual decline or down-regulation in the number of receptors for that specific hormone on the cell surface. Conversely, in response to low hormone levels, cells may use up-regulation, producing an...
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...
Regulation of Hormone Secretion01:19

Regulation of Hormone Secretion

Regulation of hormone secretion is a finely tuned orchestration driven by various types of stimuli, encompassing neural, humoral, and hormonal signals. Environmental cues instigate neural stimuli, where action potentials traverse nerve fibers to reach their designated targets. An illustrative scenario is the body's response to stress, wherein the sympathetic nervous system releases epinephrine from the adrenal glands, inducing the well-known 'fight or flight' reaction.
Humoral stimuli,...
Secondary Messengers in Hormone Action01:26

Secondary Messengers in Hormone Action

Water-soluble hormones cannot cross the plasma membrane, so they rely on protein receptors that span the membrane to trigger intracellular signaling pathways. These pathways then activate second messengers inside the cell, including cAMP or calcium ions.
Many hormones bind to transmembrane G protein-coupled receptors that connect to regulatory G proteins. These G proteins can then activate enzymes such as adenylyl cyclase or phospholipase C. Adenylyl cyclase converts ATP to cAMP, activating...
Hormones of the Pituitary Gland01:27

Hormones of the Pituitary Gland

The small, pea-sized pituitary gland is located at the base of the brain. It is crucial in regulating various bodily functions, from growth to reproduction. The gland is divided into the anterior lobe and the posterior lobe. The secretory cell clusters in the pars distalis of the anterior pituitary lobe are controlled by hypothalamic regulators and synthesize six primary hormones.
The most abundantly secreted hormone from the anterior lobe is the growth hormone, which controls overall growth by...
Major Hormones and Their Functions01:27

Major Hormones and Their Functions

Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and lactation.