| 15-PGDH | 15-hydroxyprostaglandin dehydrogenase |
| AIs | Aromatase inhibitors |
| AKT | Protein kinase B |
| ALDH1 ATRA |
Aldehyde dehydrogenase 1 All-trans-retinoic acid |
| BC | Breast cancer |
| Bcl-2 | B cell CLL/lymphoma-2 |
| BCSC | Breast cancer stem cells |
| CCND1 | Cyclin D1 |
| CD | Cluster of differentiation |
| CDK | Cyclin-dependent kinases |
| COX | Cyclooxygenase |
| CSCs DBP |
Cancer stem cells Vitamin D binding protein |
| DNMT | DNA methyltransferase |
| EAG1 | Ether-a-go-go-1 potassium channel |
| EGFR | Epidermal growth factor receptor |
| EMT | Epithelial-mesenchymal transition |
| EP | Prostaglandin E receptor |
| ER | Estrogen receptor |
| ERK | Extracellular signal-regulated kinases |
| FP | Prostaglandin F receptor |
| HDAC | Histone deacetylases |
| HDACI | Histone deacetylase inhibitors |
| HER2 | Epidermal growth factor receptor type 2 |
| HERG | Human EAG related genes |
| i.v. | Intravenous |
| IGF-1 | Insulin-like growth factor 1 |
| IGFBP-3 | Insulin-like growth factor binding protein 3 |
| JAK | Janus kinase |
| MAPK | Mitogen-activated protein kinase |
| MDM2 | Murine double minute 2 |
| MMP | Metalloproteinase |
| MTD | Maximum tolerated dose |
| NFκβ | Nuclear factor-kappa beta |
| NMU | N-methylnitrosourea |
| NSAIDs | Nonsteroidal anti-inflammatory drugs |
| OVX | Ovariectomized |
| PARP | Poly (ADP-ribose) polymerase |
| PI3K | Phosphatidylinositol 3-kinase |
| PLA | Phospholipase A2 |
| PR | Progesterone receptor |
| QDR | Days a week |
| RARs | Retinoid acid receptors |
| RAREs | Retinoic-Acid-Response-Elements |
| ROS | Reactive oxygen species |
| RXR | Retinoid-X receptor |
| SERD | Selective estrogen receptor down- |
| SERM | Selective estrogen receptor modulator |
| STAT | Activator of transcription |
| TGF-β1 | Transforming growth factor-beta 1 |
| TIL | Tumor-infiltrating lymphocytes |
| TKI | Tyrosine kinase inhibitors |
| TNBC | Triple-negative breast cancer |
| TNFα | Tumor necrosis factor alpha |
| TSA | Trichostatin A |
| TSP-1 | Thrombospondin 1 |
| VD | Vitamin D |
| VD3 | Vitamin D3 |
| VDR | Vitamin D receptor |
| VDREs | Vitamin D response elements |
| VEGF | Vascular endothelial growth factor |