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Reverse Yeast Two-hybrid System to Identify Mammalian Nuclear Receptor Residues that Interact with Ligands and/or Antagonists
10:51

Reverse Yeast Two-hybrid System to Identify Mammalian Nuclear Receptor Residues that Interact with Ligands and/or Antagonists

Published on: November 15, 2013

Interaction of nuclear receptor ligands with the Vitamin D signaling pathway in prostate cancer

Donna M Peehl1, David Feldman

  • 1Department of Urology, Stanford University School of Medicine, Stanford, CA 94305, USA. dpeehl@stanford.edu

The Journal of Steroid Biochemistry and Molecular Biology
|January 25, 2005
PubMed

Insights

Vitamin D receptor (VDR) agonists like calcitriol show promise for prostate cancer treatment due to tumor-suppressive effects. Understanding interactions with other nuclear receptors is key for effective therapeutic strategies.

Area of Science:

  • Oncology
  • Endocrinology
  • Molecular Biology

Background:

  • Hormonal ligands and nuclear receptors are key targets in prostate cancer therapy.
  • Androgen receptor (AR) signaling is crucial for prostate cancer growth, with androgen deprivation therapy being a long-standing treatment.
  • Other nuclear receptors like RAR, RXR, GR, ER, and PPAR are also investigated targets.

Purpose of the Study:

  • To evaluate calcitriol (active Vitamin D) and its analogs for prostate cancer prevention and treatment.
  • To explore the tumor-suppressive activities of calcitriol in prostate cancer, including proliferation inhibition, apoptosis induction, and reduced invasion.
  • To investigate the complex interactions between the Vitamin D signaling pathway and other nuclear receptors (androgens, retinoids, glucocorticoids, estrogens, PPARs).

Main Methods:

  • Review and analysis of existing research on nuclear receptor signaling in prostate cancer.
  • Evaluation of calcitriol's known biological activities relevant to cancer suppression.
  • Examination of cross-talk between Vitamin D receptor (VDR) and other nuclear receptors (AR, RAR, RXR, GR, ER, PPAR).

Main Results:

  • Calcitriol exhibits significant tumor-suppressive activities in prostate cancer models.
  • Androgens, retinoids, glucocorticoids, estrogens, and PPAR agonists influence VDR signaling pathways.
  • Vitamin D signaling pathways reciprocally affect the action of these other nuclear receptors.

Conclusions:

  • Calcitriol and its analogs hold potential as therapeutic agents for prostate cancer.
  • Understanding the intricate interplay between VDR and other nuclear receptors is essential for optimizing calcitriol-based treatment strategies.
  • Further research into these interactions will facilitate the design of more effective prostate cancer therapies.

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