Functional characterization of HIC, a P2Y1 agonist, as a p53 stabilizer for prostate cancer cell death induction
Abstract
Background: (1-(2-hydroxy-5-nitrophenyl)(4-hydroxyphenyl)methyl)indoline-4-carbonitrile (HIC), an agonist of the P2Y1 receptor (P2Y1R), induces cell death in prostate cancer cells. However, the molecular mechanism behind the inhibition of HIC in prostate cancer remains elusive. Methods & results: Here, to outline the inhibitory role of HIC on prostate cancer cells, PC-3 and DU145 cell lines were treated with the respective IC50 concentrations, which reduced cell proliferation, adherence properties and spheroid formation. HIC was able to arrest the cell cycle at G1/S phase and also induced apoptosis and DNA damage, validated by gene expression profiling. HIC inhibited the prostate cancer cells’ migration and invasion, revealing its antimetastatic ability. P2Y1R-targeted HIC affects p53, MAPK and NF-κB protein expression, thereby improving the p53 stabilization essential for G1/S arrest and cell death. Conclusion: These findings provide an insight on the potential use of HIC, which remains the mainstay treatment for prostate cancer.
Graphical abstract

References
- 1. Prostate cancer. Lancet 387(10013), 70–82 (2016).Crossref, Medline, Google Scholar
- 2. . The diagnosis and treatment of prostate cancer: a review. JAMA 317(24), 2532–2542 (2017).Crossref, Medline, Google Scholar
- 3. Anticancer activity study of A3 adenosine receptor agonists. Life Sci. 205, 155–163 (2018).Crossref, Medline, CAS, Google Scholar
- 4. . The role of G protein-coupled receptor kinases in cancer. Int. J. Biol. Sci. 14(2), 189–203 (2018).Crossref, Medline, CAS, Google Scholar
- 5. . G protein-coupled receptors. Encycl. Cell Biol. 3, 51–55 (2016).Crossref, Google Scholar
- 6. . Cloning and tissue distribution of the human P2Y1 receptor. Biochem. Biophys. Res. Commun. 221(3), 588–593 (1996).Crossref, Medline, CAS, Google Scholar
- 7. . Activation of the P2Y1 receptor induces apoptosis and inhibits proliferation of prostate cancer cells. Biochem. Pharmacol. 82(4), 418–425 (2011).Crossref, Medline, CAS, Google Scholar
- 8. P2Y2 receptor promotes cell invasion and metastasis in prostate cancer cells. Br. J. Cancer 109(6), 1666–1675 (2013).Crossref, Medline, CAS, Google Scholar
- 9. . Characterization of calcium-independent purinergic receptor-mediated apoptosis in hormone-refractory prostate cancer. BJU Int. 101(3), 352–359 (2008).Crossref, Medline, CAS, Google Scholar
- 10. Synthesis and preclinical validation of novel P2Y1 receptor ligands as a potent anti-prostate cancer agent. Sci. Rep. 9(1), 18938 (2019).Crossref, Medline, Google Scholar
- 11. . Nucleotide P2Y1 receptor regulates EGF receptor mitogenic signaling and expression in epithelial cells. J. Cell Sci. 120(Pt 24), 4289–4301 (2007).Crossref, Medline, CAS, Google Scholar
- 12. . Autocrine stimulation of P2Y1 receptors is part of the purinergic signaling mechanism that regulates T cell activation. Purinergic Signal. 15(2), 127–137 (2019).Crossref, Medline, CAS, Google Scholar
- 13. Transcription factor FOXO1 promotes cell migration toward exogenous ATP via controlling P2Y1 receptor expression in lymphatic endothelial cells. Biochem. Biophys. Res. Commun. 489(4), 413–419 (2017).Crossref, Medline, CAS, Google Scholar
- 14. . Regulation of death and survival in astrocytes by ADP activating P2Y1 and P2Y12 receptors. Biochem. Pharmacol. 72(8), 1031–1041 (2006).Crossref, Medline, CAS, Google Scholar
- 15. . Mechanism of activation and inactivation of Gq/phospholipase C-β signaling nodes. Chem. Rev. 111(10), 6120–6129 (2011).Crossref, Medline, CAS, Google Scholar
- 16. . Functions and regulatory mechanisms of Gq-signaling pathways. NeuroSignals 17(1), 42–54 (2009).Crossref, Medline, CAS, Google Scholar
- 17. . EGF-induced ERK phosphorylation independent of PKC isozymes in human corneal epithelial cells. Investig. Ophthalmol. Vis. Sci. 43(12), 3673–3679 (2002).Medline, Google Scholar
- 18. . ERK1/2 mediate wounding- and G-protein-coupled receptor ligands-induced EGFR activation via regulating ADAM17 and HB-EGF shedding. Investig. Ophthalmol. Vis. Sci. 50(1), 132–139 (2009).Crossref, Medline, Google Scholar
- 19. . Signaling pathway of MAPK/ERK in cell proliferation, differentiation, migration, senescence and apoptosis. J. Recept. Signal Transduct. 35(6), 600–604 (2015).Crossref, Medline, CAS, Google Scholar
- 20. . Inhibition of ZL55 cell proliferation by ADP via PKC-dependent signalling pathway. J. Cell. Physiol. 233(3), 2526–2536 (2018).Crossref, Medline, CAS, Google Scholar
- 21. . The P2Y1 receptor antagonist MRS2500 prevents carotid artery thrombosis in cynomolgus monkeys. J. Thromb. Thrombolysis 41(3), 514–521 (2016).Crossref, Medline, CAS, Google Scholar
- 22. . Identification of a different agonist-binding site and activation mechanism of the human P2Y1 receptor. Sci. Rep. 7(1), 13764 (2017).Crossref, Medline, Google Scholar
- 23. . ADP stimulates human endothelial cell migration via P2Y1 nucleotide receptor-mediated mitogen-activated protein kinase pathways. Circ. Res. 102(4), 448–456 (2008).Crossref, Medline, CAS, Google Scholar
- 24. The soft agar colony formation assay. J. Vis. Exp. (92), e51998 (2014).Medline, Google Scholar
- 25. Liprin-α1 modulates cancer cell signaling by transmembrane protein CD82 in adhesive membrane domains linked to cytoskeleton. Cell Commun. Signal. 16(1), 41 (2018).Crossref, Medline, Google Scholar
- 26. The Ensembl genome database project. Nucleic Acids Res. 30(1), 38–41 (2002).Crossref, Medline, CAS, Google Scholar
- 27. Babraham Institute. FASTQC: a quality control tool for high throughput sequence data. www.bioinformatics.babraham.ac.uk/projects/fastqc/Google Scholar
- 28. STAR: ultrafast universal RNA-seq aligner. Bioinformatics 29(1), 15–21 (2013).Crossref, Medline, CAS, Google Scholar
- 29. The Sequence Alignment/Map format and SAMtools. Bioinformatics 25(16), 2078–2079 (2009).Crossref, Medline, Google Scholar
- 30. . HTSeq – a Python framework to work with high-throughput sequencing data. Bioinformatics 31(2), 166–169 (2015).Crossref, Medline, CAS, Google Scholar
- 31. . Moderated estimation of fold change and dispersion for RNA-seq data with DESeq2. Genome Biol. 15(12), 550 (2014).Crossref, Medline, Google Scholar
- 32. . Controlling the false discovery rate: a practical and powerful approach to multiple testing. J. R. Stat. Soc. Ser. B 57(1), 289–300 (1995).Google Scholar
- 33. Gene ontology: tool for the unification of biology. Nat. Genet. 25(1), 25–29 (2000).Crossref, Medline, CAS, Google Scholar
- 34. . ClusterProfiler: an R package for comparing biological themes among gene clusters. OMICS 16(5), 284–287 (2012).Crossref, Medline, CAS, Google Scholar
- 35. . KEGG: Kyoto Encyclopedia of Genes and Genomes. Nucleic Acids Res. 28(1), 27–30 (2000).Crossref, Medline, CAS, Google Scholar
- 36. . CDK2 is required for the DNA damage response during porcine early embryonic development. Biol. Reprod. 95(2), 31 (2016).Crossref, Medline, Google Scholar
- 37. . Downregulation of Cdk1 and CyclinB1 expression contributes to oridonin-induced cell cycle arrest at G2/M phase and growth inhibition in SGC-7901 gastric cancer cells. Asian Pacific J. Cancer Prev. 15(15), 6437–6441 (2014).Crossref, Medline, Google Scholar
- 38. SOX4 overexpression regulates the p53-mediated apoptosis in hepatocellular carcinoma: clinical implication and functional analysis in vitro. Carcinogenesis 31(7), 1298–1307 (2010).Crossref, Medline, CAS, Google Scholar
- 39. . p73 induction after DNA damage is regulated by checkpoint kinases Chk1 and Chk2. Genes Dev. 18(24), 3041–3054 (2004).Crossref, Medline, CAS, Google Scholar
- 40. MDM4/HIPK2/p53 cytoplasmic assembly uncovers coordinated repression of molecules with anti-apoptotic activity during early DNA damage response. Oncogene 35(2), 228–240 (2016).Crossref, Medline, CAS, Google Scholar
- 41. . MDM2 and MDM4: p53 regulators as targets in anticancer therapy. Int. J. Biochem. Cell Biol. 39(7–8), 1476–1482 (2007).Crossref, Medline, CAS, Google Scholar
- 42. Transcription regulation of CDKN1A (p21/CIP1/WAF1) by TRF2 is epigenetically controlled through the REST repressor complex. Sci. Rep. 7(1), 11541 (2017).Crossref, Medline, Google Scholar
- 43. . The MDM2–p53 pathway revisited. J. Biomed. Res. 27(4), 254–271 (2013).Medline, CAS, Google Scholar
- 44. . Absence of MyD88 results in enhanced TLR3-dependent phosphorylation of IRF3 and increased IFN-β and RANTES production. J. Immunol. 186(4), 2514–2522 (2011).Crossref, Medline, CAS, Google Scholar
- 45. . The DNA damage-induced cell death response: a roadmap to kill cancer cells. Cell. Mol. Life Sci. 73(15), 2829–2850 (2016).Crossref, Medline, CAS, Google Scholar
- 46. . Replication timing is regulated by the number of MCMs loaded at origins. Genome Res. 25(12), 1886–1892 (2015).Crossref, Medline, CAS, Google Scholar
- 47. . Cell cycle checkpoint control: the cyclin G1/Mdm2/p53 axis emerges as a strategic target for broad-spectrum cancer gene therapy – a review of molecular mechanisms for oncologists. Mol. Clin. Oncol. 9(2), 115–134 (2018).Medline, CAS, Google Scholar
- 48. An important role for CDK2 in G1 to S checkpoint activation and DNA damage response in human embryonic stem cells. Stem Cells 29(4), 651–659 (2011).Crossref, Medline, CAS, Google Scholar
- 49. . Targeting cyclin-dependent kinases in human cancers: from small molecules to peptide inhibitors. Cancers (Basel) 7(1), 179–237 (2015).Crossref, Medline, CAS, Google Scholar
- 50. Effect of alkylaminophenols on growth inhibition and apoptosis of bone cancer cells. Eur. J. Pharm. Sci. 107, 208–216 (2017).Crossref, Medline, CAS, Google Scholar
- 51. . Transforming growth factor-β: a therapeutic target for cancer. Hum. Vaccines Immunother. 13(8), 1741–1750 (2017).Crossref, Medline, Google Scholar
- 52. . TGF-β-induced epithelial to mesenchymal transition. Cell Res. 19(2), 156–172 (2009).Crossref, Medline, CAS, Google Scholar
- 53. . BMP4 inhibits the proliferation of breast cancer cells and induces an MMP-dependent migratory phenotype in MDA-MB-231 cells in 3D environment. BMC Cancer 13, 429 (2013).Crossref, Medline, Google Scholar
- 54. Downregulation of annexin A3 inhibits tumor metastasis and decreases drug resistance in breast cancer. Cell Death Dis. 9(2), 126 (2018).Crossref, Medline, Google Scholar
- 55. Desmoglein 2 depletion leads to increased migration and upregulation of the chemoattractant secretoneurin in melanoma cells. PLoS ONE 9(2), e89491 (2014).Crossref, Medline, Google Scholar
- 56. miR-665 is downregulated in glioma and inhibits tumor cell proliferation, migration and invasion by targeting high mobility group box 1. Oncol. Lett. 21(2), 156 (2021).Crossref, Medline, CAS, Google Scholar
- 57. MDM4 inhibition: a novel therapeutic strategy to reactivate p53 in hepatoblastoma. Sci. Rep. 11(1), 2967 (2021).Crossref, Medline, CAS, Google Scholar
- 58. . Synergy between the Mos/mitogen-activated protein kinase pathway and loss of p53 function in transformation and chromosome instability. Mol. Cell. Biol. 17(1), 506–518 (1997).Crossref, Medline, CAS, Google Scholar
- 59. Absence of p53 mutations in malignant mesotheliomas. Am. J. Respir. Cell Mol. Biol. 16(1), 9–13 (1997).Crossref, Medline, CAS, Google Scholar
- 60. p53 mutations and overexpression affect prognosis of ovarian endometrioid cancer but not clear cell cancer. Gynecol. Oncol. 88(3), 318–325 (2003).Crossref, Medline, CAS, Google Scholar
- 61. Identification of early growth response protein 1 (EGR-1) as a novel target for JUN-induced apoptosis in multiple myeloma. Blood 115(1), 61–70 (2010).Crossref, Medline, CAS, Google Scholar
- 62. . The c-Jun NH2-terminal protein kinase/AP-1 pathway is required for efficient apoptosis induced by vinblastine. Cancer Res. 61(11), 4450–4458 (2001).Medline, CAS, Google Scholar
- 63. Targeting p53 via JNK pathway: a novel role of RITA for apoptotic signaling in multiple myeloma. PLoS ONE 7(1), e30215 (2012).Crossref, Medline, CAS, Google Scholar
- 64. . The cell-cycle arrest and apoptotic functions of p53 in tumor initiation and progression. Cold Spring Harb. Perspect. Med. 6(3), a026104 (2016).Crossref, Medline, Google Scholar
- 65. . P2Y1 receptor-evoked glutamate exocytosis from astrocytes. J. Biol. Chem. 281(41), 30684–30696 (2006).Crossref, Medline, CAS, Google Scholar
- 66. . MDM2 and MDMX: alone and together in regulation of p53. Transl. Cancer Res. 1(2), 88–89 (2012).Medline, Google Scholar
- 67. Up-regulation of the proapoptotic mediators Bax and Bak after adenovirus-mediated p53 gene transfer in lung cancer cells. Clin. Cancer Res. 6(3), 887–890 (2000).Medline, CAS, Google Scholar
- 68. Glycyrrhetinic acid induces G1-phase cell cycle arrest in human non-small cell lung cancer cells through endoplasmic reticulum stress pathway. Int. J. Oncol. 46(3), 981–988 (2015).Crossref, Medline, CAS, Google Scholar
- 69. TGF-β1/p53 signaling in renal fibrogenesis. Cell. Signal. 43, 1–10 (2018).Crossref, Medline, CAS, Google Scholar
- 70. . Mesenchymal stem cells co-cultured with colorectal cancer cells showed increased invasive and proliferative abilities due to its altered p53/TGF-β1 levels. Biosci. Biotechnol. Biochem. 84(2), 256–267 (2020).Crossref, Medline, CAS, Google Scholar
- 71. . The functional interactions between the p53 and MAPK signaling pathways. Cancer Biol. Ther. 3(2), 156–161 (2004).Crossref, Medline, Google Scholar
- 72. High-density lipoproteins exert pro-inflammatory effects on macrophages via passive cholesterol depletion and PKC-NF-κB/STAT1-IRF1 signaling. Cell Metab. 25(1), 197–207 (2017).Crossref, Medline, Google Scholar
- 73. ERK1/2 and p38 pathways are required for P2Y receptor-mediated prostate cancer invasion. Cancer Lett. 215(2), 239–247 (2004).Crossref, Medline, CAS, Google Scholar
- 74. . The multiple mechanisms that regulate p53 activity and cell fate. Nat. Rev. Mol. Cell Biol. 20(4), 199–210 (2019).Crossref, Medline, CAS, Google Scholar
- 75. . PKC-δ/PKC-α activity balance regulates the lethal effects of cisplatin. Biochem. Pharmacol. 98(1), 29–40 (2015).Crossref, Medline, CAS, Google Scholar
- 76. . Involvement of protein kinase C-δ in DNA damage-induced apoptosis. J. Cell. Mol. Med. 7(4), 341–350 (2003).Crossref, Medline, CAS, Google Scholar
- 77. . Calcium regulates ERK signaling by modulating its protein–protein interactions. Commun. Integr. Biol. 1(1), 4–5 (2008).Crossref, Medline, CAS, Google Scholar
- 78. WNK1 activates large-conductance Ca2+-activated K+ channels through modulation of ERK1/2 signaling. J. Am. Soc. Nephrol. 26(4), 844–854 (2015).Crossref, Medline, CAS, Google Scholar


