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| Content Provider | Springer Nature Link |
|---|---|
| Author | Xu, Ying Wang, Tianyou Tang, Ruihong Tang, Suoqin |
| Copyright Year | 2010 |
| Abstract | The high expression of folate receptor (FR) on cancer cells might be a potential target for cancer therapy. In this study, the FR-β expression and the modulation effect of all-trans retinoic acid (ATRA) in a number of cancer cell lines were analyzed. The gateway of ATRA activity on FR-β expression was further studied by a panel of retinoid activators and inhibitors. The results revealed that ATRA was capable of upregulating the expression of FR-β protein in KG-1 cells in a dosage-dependent manner, not in KG-1a, NB4, HL60, 293, L1210, JAR, and Hela cells. FR-β mRNA expression in KG-1 cells was higher when ATRA was present in culture medium at 10$^{−6}$ mol/L for 5 days, and it went down to baseline when ATRA was removed from the medium, vice versa. The upregulation of FR-β expression in KG-1 cells by ATRA was not associated with cell proliferation and differentiation. In addition, activators of retinoid acid receptor (RAR)α and RARγ, CD336, and CD2781 also induced FR-β expression. The induction of FR-β expression by CD336 could be inhibited by RARγ antagonist CD2665; RARβ agonist CD-417 and CD-2314 as well as retinoid X receptor (RXR) agonist LG100364 could not induce FR-β expression. These results indicate that ATRA within a certain range of concentration could reversibly induce the expression of FR-β in a dosage- and cell type-dependent manner, and its action in KG-1 cells might be associated with the signal transduction of retinoid receptor RARα and RARγ, rather than RARβ and RXRs. |
| Starting Page | 589 |
| Ending Page | 595 |
| Page Count | 7 |
| File Format | |
| ISSN | 10104283 |
| Journal | Tumor Biology |
| Volume Number | 31 |
| Issue Number | 6 |
| e-ISSN | 14230380 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2010-07-15 |
| Publisher Place | Dordrecht |
| Access Restriction | Subscribed |
| Subject Keyword | ATRA Folate receptor Target therapy Leukemia Cancer Research |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Cancer Research |
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