24R,25-dihydroxyvitamin D3 modulates tumorigenicity in breast cancer in an estrogen receptor-dependent manner

Anjali Verma, Zvi Schwartz, Barbara D. Boyan

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Vitamin D has long been prescribed as a supplement to breast cancer patients. This is partially motivated by data indicating that low serum vitamin D, measured as 25-hydroxyvitamin D3 [25(OH)D3], is associated with worsened cancer prognosis and decreased survival rates in cancer patients. However, clinical studies investigating the role of vitamin D supplementation in breast cancer treatment are largely inconclusive. One reason for this may be that many of these studies ignore the complexity of the vitamin D metabolome and the effects of these metabolites at the cellular level. Once ingested, vitamin D is metabolized into 37 different metabolites, including 25(OH)D3, which is the metabolite actually measured clinically, as well as 1,25(OH)2D3 and 24,25(OH)2D3. Recent work by our lab and others has demonstrated a role for 24R,25(OH)2D3, in the modulation of breast cancer tumors via an estrogen receptor α-dependent mechanism. This review highlights the importance of considering estrogen receptor status in vitamin D-associated prognostic studies of breast cancer and proposes a potential mechanism for 24R,25(OH)2D3 signaling in breast cancer cells.

Original languageEnglish (US)
Article number108447
StatePublished - Oct 2019
Externally publishedYes


  • 24R,25-dihydroxyvitamin D
  • Breast cancer
  • Estrogen receptor α
  • Phospholipase D
  • Vitamin D

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Endocrinology
  • Pharmacology
  • Clinical Biochemistry
  • Organic Chemistry


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