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Published on: November 19, 2019
[Effects of long non-coding RNA RP1-90L14.1 on the biological behaviors of cancer prostate LNCaP cells and its
Pin-Geng Wu1, Yu-Xi Zhang1, Zhe Zhang1
1Department of Urology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, China.
Objective:
To investigate the effects of long non-coding RNA RP1-90L14.1 on the proliferation, migration and invasion of prostate cancer LNCaP cells and the expressions of GRIN2A and BACE2.
Methods:
Using RT-PCR, we detected the expression of RP1-90L14.1 in LNCaP and LNCaP-AI cells, transiently transfected the RP1-90L14.1 overexpression plasmid (the RP1-90L14.1 group) and vector plasmid (the LNCaP-NC group) into the LNCaP cells, and cultured the two groups of cells with ordinary medium and phenol red-free activated carbon adsorption medium (PRF-ACA). Then we examined the proliferation, migration and invasiveness of the cells by CCK-8 and Transwell, and determined the mRNA and protein expressions of GRIN2A and BACE2 by RT-PCR and Western blot.
Results:
The expression of RP1-90L14.1 was significantly higher in the LNCaP-AI than in the LNCaP cells (8.49 ± 0.43 vs 2.53 ± 0.95, P < 0.05), and so was that of LNCaP-RP1-90L14.1 in the RP1-90L14.1 than in the LNCaP-NC group after transfection (0.71 ± 0.22 vs 0.02 ± 0.01, P < 0.05). The optical densities (OD) of the cells were 51.95% and 50.69% higher in the RP1-90L14.1 than in the LNCaP-NC group after 72 hours of culture with ordinary medium and phenol red-free ACA (1.22 ± 0.08 vs 0.08 ± 0.05, P < 0.05; 0.79 ± 0.02 vs 0.53 ± 0.05, P < 0.05), and 51.72% and 60.23% higher in the former than in the latter after 96 hours (1.72 ± 0.07 vs 1.13 ± 0.05, P < 0.05; 1.18 ± 0.05 vs 0.73 ± 0.08, P < 0.05). The numbers of the migrating cells cultured with common medium and PRF-ACA were markedly higher in the RP1-90L14.1 than in the LNCaP-NC group after transfection (682.0 ± 42.7 vs 422.0 ± 37.1, P < 0.05; 419.0 ± 42.9 vs 251.0 ± 25.9, P < 0.05), and so were those of the invading cells (507.0 ± 22.2 vs 274.0 ± 19.6, P < 0.05; 352.0 ± 14.1 vs 216.0 ± 14.3, P < 0.05). Statistically significant differences were observed between the RP1-90L14.1 and LNCaP-NC groups in the mRNA and protein expressions of GRIN2A (5.13 ± 0.89 vs 2.09 ± 0.54, P < 0.05; 5.88 ± 0.29 vs 2.03 ± 0.22, P < 0.05) and BACE2 (5.82 ± 0.50 vs 2.53 ± 0.30, P < 0.05; 4.89 ± 0.19 vs 3.37 ± 0.13, P < 0.05).
Conclusions:
lncRNA RP1-90L14.1 may play important roles in the proliferation, migration and invasiveness of prostate cancer cells. RP1-90L14.1 can promote the expressions of GRIN2A and BACE2 and may have an endogenous competitive relation with GRIN2A and BACE2.
Insights
Long non-coding RNA RP1-90L14.1 significantly enhances prostate cancer cell proliferation, migration, and invasion. This lncRNA also promotes the expression of GRIN2A and BACE2, suggesting a role in prostate cancer progression.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- Prostate cancer is a significant health concern.
- Long non-coding RNAs (lncRNAs) are increasingly recognized for their roles in cancer.
- The specific function of lncRNA RP1-90L14.1 in prostate cancer is not fully understood.
Purpose of the Study:
- To investigate the functional role of lncRNA RP1-90L14.1 in prostate cancer cell lines.
- To determine the effect of RP1-90L14.1 on cell proliferation, migration, and invasion.
- To examine the impact of RP1-90L14.1 on the expression of GRIN2A and BACE2.
Main Methods:
- RT-PCR was used to detect lncRNA RP1-90L14.1 expression.
- LNCaP cells were transfected with RP1-90L14.1 overexpression or vector plasmids.
- Cell proliferation, migration, and invasion were assessed using CCK-8 and Transwell assays.
- mRNA and protein levels of GRIN2A and BACE2 were determined by RT-PCR and Western blot.
Main Results:
- RP1-90L14.1 expression was significantly higher in androgen-independent (LNCaP-AI) than androgen-dependent (LNCaP) prostate cancer cells.
- Overexpression of RP1-90L14.1 significantly increased proliferation, migration, and invasion of LNCaP cells.
- RP1-90L14.1 overexpression led to significantly increased mRNA and protein levels of GRIN2A and BACE2.
Conclusions:
- lncRNA RP1-90L14.1 promotes the proliferation, migration, and invasion of prostate cancer cells.
- RP1-90L14.1 upregulates the expression of GRIN2A and BACE2.
- RP1-90L14.1 may function as an endogenous competitor influencing GRIN2A and BACE2 activity in prostate cancer.
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