MicroRNA-Dependent Targeting of RSU1 and the IPP Adhesion Complex Regulates the PTEN/PI3K/AKT Signaling Pathway in Breast Cancer Cell Lines
Abstract
:1. Introduction
2. Results
2.1. Identification of the miRs Predicted to Target RSU1 and the Validation of Their Function in Human Mammary Epithelial Cells
2.2. The Expression of miRs Targeting RSU1 in Breast Cancer Cell Lines Varies by Breast Cancer Subtype
2.3. miR-182-5p and miR-409-5p Reduce RSU1 and PINCH1 Thereby Targeting the MKK4-p38-ATF2-PTEN Signaling Pathway in MCF10A Cells
2.4. The Reduction in miR-182-5p Expression in Luminal Breast Cells Increases RSU1 and PINCH1
2.5. miR-221-3p and miR-130a-3p Target RSU1 and Other RNAs in MCF7 Luminal Breast Cancer Cells
2.6. miR221-3p and miR-130a-3p Are not Regulated by p38 MAPK
3. Discussion
4. Materials and Methods
4.1. Cell Lines and Culture
4.2. Reagents
4.3. siRNA-Induced Gene Silencing
4.4. miR Target Predictions
4.5. MicroRNA Array Analysis
4.6. Western Blotting and Antibodies
4.7. RNA Isolation and Quantitative Real-Time RT-PCR
4.8. miR Isolation and miR Quantitative Real-Time RT-PCR
4.9. Statistical Analysis
4.10. Mimic and Antagomir Transfection
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
Abbreviations
RSU1 | Ras suppressor protein |
PINCH1 | LIMS1 |
ILK | Integrin linked kinase |
PTEN | phosphatase and tensin homolog |
AKT | Protein kinase B |
MiR | microRNA |
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miRs. | miTG Score | Pct | Context+++ Score | mirSVR Score |
---|---|---|---|---|
7a/b-5p | < 0.1 | −0.38 | −0.9329 | |
18a/b-5p | 0.74 | < 0.1 | −0.34 | |
22-3p | 0.55 | −0.32 | −0.4965 | |
27a-3p | 0.71 | −0.5595 | ||
33a/b-5p | 0.18 | −0.13 | −0.1007 | |
96/507/1271-5p | 0.72 | 0.74 | −0.03 | −0.0274 |
106a-5p | 0.76 | N/A | −0.12 | −0.0298 |
129-5p | 0.76 | < 0.1 | −0.18 | −0.5599 |
130a/301/454/721-3p | < 0.1 | −0.02 | ||
132/212-3p | N/A | −0.12 | −0.1108 | |
135a-5p | < 0.1 | −0.15 | −0.2668 | |
150/5127-5p | 0.75 | < 0.1 | −0.12 | |
182-5p | 0.74 | −0.10 | −0.0277 | |
183 | < 0.1 | −0.18 | −0.3810 | |
186-5p | 0.82 | N/A | −0.06 | −0.2116 |
188-3p | 0.8 | N/A | −0.07 | |
200bc/429/548-3p | 0.97 | < 0.1 | −0.06 | −0.4047 |
204-3p/4646-5p | N/A | −0.13 | ||
204/211-5p | < 0.1 | −0.13 | −0.0982 | |
320a | N/A | −0.03 | −0.0100 | |
384 | 0.87 | N/A | −0.16 | −0.4510 |
409-3/5p | N/A | −0.27 | ||
495-3p | 0.73 | N/A | −0.08 | −0.8570 |
Array Analysis (RSU1 Depletion) | ||
---|---|---|
miR | T/C | p Value |
130a-3p | 1.853467 | 0.000166817 |
744-5p | 2.240783 | 0.00000251 |
221-3p | 1.900005 | 0.0000982 |
1275 | 1.748783 | 0.00000628 |
30c-1-3p | 1.747629 | 0.0000347 |
1908-5p | 1.755459 | 0.0000262 |
3656 | 1.940992 | 0.00000416 |
3960 | 2.347732 | 0.000449102 |
4725-3p | 2.080193 | 0.000121922 |
4792 | 1.788032 | 0.000000192 |
204-3p | 2.399785 | 0.000000147 |
Quantitative Taqman RT-PCR (RSU1 Depletion) | Quantitative Taqman RT-PCR (PINCH1 Depletion) | |||
miR | T/C | p Value | T/C | p Value |
221-3p | 4.74 | 0.0062378 | 4.28 | 0.01376867 |
744-5p | 2.36 | 0.0469889 | 2.26 | 0.00987941 |
Quantitative Taqman RT-PCR (RSU1 Depletion) | ||||
miR | T/C | p Value | ||
1275 | 1.2 | 0.0692250893 | ||
30c-1-3p | 1.4 | 0.002352315 | ||
1908-5p | 1.2 | 0.0094784933 | ||
4725-3p | 1.5 | 0.0201897997 |
microRNA | Breast Association | Reference |
---|---|---|
miR-182-5p | -Increased in breast tumor versus normal tissue | [27] |
-Associated with veliparib resistance | [28] | |
-Independent predictor of benefit from endocrine therapy | [29] | |
miR-200b-3p | -Independent predictor of benefit from endocrine therapy | [30,31,32,33] |
-Regulates EMT in breast through ZEB1/2 | ||
miR-204-3p | -Part of a signature to predict recurrence free survival | [34,35] |
-Targets TGFb2 and ANGPT1 to inhibit angiogenesis and vascularization | [28] | |
-Targets FOXA1; inhibits proliferation and migration | [36] | |
-Targets IL11 and TGF beta signaling | [37] | |
miR-7-5p | -Significant lower level of miR-7 in metastatic breast cancer tissues than normal breast tissue and regulation of EMT process by E-cadherin and vimentin expression | [35] |
-Inhibition of EGFR and PKB for growth and metastasis of breast cancer cells | [38] | |
miR-409-3p | -miR-409-3p inhibited cellular growth, migration and invasion by targeting ZEB1 | [39] |
-miR-409-3p induced downregulation of Akt1 protein through binding to 3’UTR | [40] | |
miR-130a-3p | - Overexpression of miR-130a inhibited migration and invasion in MDA-MB-231 by reduction of FOSL1 and upregulation of ZO1 | [41] |
-miR-130a-3p inhibits migration and invasion by regulating RAB5B | [42] | |
-miR-130a overexpression in human breast cancer cells promoted Akt phosphorylation, cell survival, and tumor growth by repression of PTEN | [43] | |
miR-221-3p | -PAK1-mediated phosphorylation of serine 305 (S305) of ERα by miR-221-3p targeting the 3’ UTR of PAK1 | [44] |
-ADAMTS6 inhibits tumor development by regulating the ERK pathway via binding of miR-221-3p | [45] | |
miR-744-5p | -miR-744-5p suppresses the MCF7 cancer cell growth by reducing proto-oncogene EF1A2 | [46] |
miR-106-5p | - MicroRNA-106b targets FUT6 to promote migration, invasion, and proliferation in human breast cancer | [47] |
-miR-106b-5p was significantly upregulated in BRCA cells and contributes to the lung metastasis of breast cancer by inhibition CNN1 and activating Rho/ROCK1 | [48] |
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Kim, Y.-C.; Cutler, M.L. MicroRNA-Dependent Targeting of RSU1 and the IPP Adhesion Complex Regulates the PTEN/PI3K/AKT Signaling Pathway in Breast Cancer Cell Lines. Int. J. Mol. Sci. 2020, 21, 5458. https://doi.org/10.3390/ijms21155458
Kim Y-C, Cutler ML. MicroRNA-Dependent Targeting of RSU1 and the IPP Adhesion Complex Regulates the PTEN/PI3K/AKT Signaling Pathway in Breast Cancer Cell Lines. International Journal of Molecular Sciences. 2020; 21(15):5458. https://doi.org/10.3390/ijms21155458
Chicago/Turabian StyleKim, Yong-Chul, and Mary L. Cutler. 2020. "MicroRNA-Dependent Targeting of RSU1 and the IPP Adhesion Complex Regulates the PTEN/PI3K/AKT Signaling Pathway in Breast Cancer Cell Lines" International Journal of Molecular Sciences 21, no. 15: 5458. https://doi.org/10.3390/ijms21155458