Abstract
Protein kinase CK2 plays multiple roles in cell function in normal and disease states. CK2 is elevated in numerous types of cancer cells, and CK2 suppression of apoptosis represents a key link to the cancer cell phenotype. CK2 regulation of cell survival and death involves diverse processes, and our previous work suggested that mitochondrial machinery is a key locus of this function. One of the earliest responses of prostate cells to inhibition of CK2 is a change in mitochondrial membrane potential, possibly associated with Ca2+ signaling. Thus, in the present work, we investigated early impact of CK2 on intracellular Ca2+ dynamics. Three prostate cancer (PCa) cell lines, PC3-LN4, C4-2B, and 22Rv1, were studied. PCa cells were treated with the CK2 small molecule inhibitors 4,5,6,7-tetrabrombenzotriazole and CX-4945 followed by analysis of Ca2+ levels in various cellular compartments over time. The results showed dose-dependent loss in cytosolic Ca2+ levels starting within 2 min and reaching maximal loss within 5–10 min. There was a concomitant increase in Ca2+ in the endoplasmic reticulum (ER) and mitochondrial compartments. The results suggest that inhibition of CK2 activity results in a rapid movement of Ca2+ out of the cytosol and into the ER and mitochondria, which may be among the earliest contributory factors for induction of apoptosis in cells subjected to inhibition of CK2. In cells with death-inducing levels of CK2 inhibition, total cellular Ca2+ levels dropped at 2 h post-treatment. These novel observations represent a potential mechanism underlying regulation of cell survival and death by CK2 activity.
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References
Ahmed K (1999) Nuclear matrix and protein kinase CK2 signaling. Crit Rev Eukaryot Gene Expr 9(3–4):329–336
Tawfic S, Yu S, Wang H, Faust R, Davis A, Ahmed K (2001) Protein kinase CK2 signal in neoplasia. Histol Histopathol 16(2):573–582
Pinna LA (2002) Protein kinase CK2: a challenge to canons. J Cell Sci 115(Pt 20):3873–3878
Meggio F, Pinna LA (2003) One-thousand-and-one substrates of protein kinase CK2? FASEB J 17(3):349–368. https://doi.org/10.1096/fj.02-0473rev
Guerra B, Issinger O-G (2008) Protein kinase CK2 in human diseases. Curr Med Chem 15(19):1870–1886. https://doi.org/10.1007/s00018-009-9148-9
St-Denis NA, Litchfield DW (2009) Protein kinase CK2 in health and disease: from birth to death: the role of protein kinase CK2 in the regulation of cell proliferation and survival. Cell Mol Life Sci 66(11–12):1817–1829
Ahmed K, Yenice S, Davis A, Goueli SA (1993) Association of casein kinase 2 with nuclear chromatin in relation to androgenic regulation of rat prostate. Proc Natl Acad Sci USA 90(10):4426–4430
Faust RA, Niehans G, Gapany M, Hoistad D, Knapp D, Cherwitz D, Davis A, Adams GL, Ahmed K (1999) Subcellular immunolocalization of protein kinase CK2 in normal and carcinoma cells. Int J Biochem Cell Biol 31(9):941–949. https://doi.org/10.1016/S1357-2725(99)00050-3
Faust M, Montenarh M (2000) Subcellular localization of protein kinase CK2. A key to its function? Cell Tissue Res 301(3):329–340
Guerra B, Issinger O-G (1999) Protein kinase CK2 and its role in cellular proliferation, development and pathology. Electrophoresis 20(2):391–408. https://doi.org/10.1002/(SICI)1522-2683(19990201)20:2%3c391:AID-ELPS391%3e3.0.CO;2-N
Guo C, Yu S, Davis AT, Wang H, Green JE, Ahmed K (2001) A potential role of nuclear matrix-associated protein kinase CK2 in protection against drug-induced apoptosis in cancer cells. J Biol Chem 276(8):5992–5999. https://doi.org/10.1074/jbc.M004862200
Wang H, Davis A, Yu S, Ahmed K (2001) Response of cancer cells to molecular interruption of the CK2 signal. Mol Cell Biochem 227(1–2):167–174. https://doi.org/10.1023/A:1013112908734
Ahmed K, Gerber DA, Cochet C (2002) Joining the cell survival squad: an emerging role for protein kinase CK2. Trends Cell Biol 12(5):226–230
Ahmad KA, Wang G, Unger G, Slaton J, Ahmed K (2008) Protein kinase CK2–a key suppressor of apoptosis. Adv Enzyme Regul 48:179–187. https://doi.org/10.1016/j.advenzreg.2008.04.002
Wang G, Ahmad KA, Ahmed K (2005) Modulation of death receptor-mediated apoptosis by CK2. Mol Cell Biochem 274(1–2):201–205
Wang G, Ahmad KA, Ahmed K (2006) Role of protein kinase CK2 in the regulation of tumor necrosis factor-related apoptosis inducing ligand-induced apoptosis in prostate cancer cells. Cancer Res 66(4):2242–2249. https://doi.org/10.1158/0008-5472.CAN-05-2772
Ahmad KA, Wang G, Ahmed K (2006) Intracellular hydrogen peroxide production is an upstream event in apoptosis induced by down-regulation of casein kinase 2 in prostate cancer cells. Mol Cancer Res 4(5):331–338. https://doi.org/10.1158/1541-7786.MCR-06-0073
Qaiser F, Trembley JH, Kren BT, Wu JJ, Naveed AK, Ahmed K (2014) Protein kinase CK2 inhibition induces cell death via early impact on mitochondrial function. J Cell Biochem 115(12):2103–2115. https://doi.org/10.1002/jcb.24887
Clapham DE (2007) Calcium signaling. Cell 131(6):1047–1058. https://doi.org/10.1016/j.cell.2007.11.028
Brini M, Ottolini D, Cali T, Carafoli E (2013) Calcium in health and disease. Metal ions in life sciences 13:81–137. https://doi.org/10.1007/978-94-007-7500-8_4
Ritaine A, Shapovalov G, Prevarskaya N (2017) Metabolic disorders and cancer: store-operated Ca(2+) entry in cancer: focus on IP3R-mediated Ca(2+) release from intracellular stores and its role in migration and invasion. Adv Exp Med Biol 993:623–637. https://doi.org/10.1007/978-3-319-57732-6_31
Slaton JW, Unger GM, Sloper DT, Davis AT, Ahmed K (2004) Induction of apoptosis by antisense CK2 in human prostate cancer xenograft model. Mol Cancer Res 2(12):712–721
Liu C, Lou W, Zhu Y, Nadiminty N, Schwartz CT, Evans CP, Gao AC (2014) Niclosamide inhibits androgen receptor variants expression and overcomes enzalutamide resistance in castration-resistant prostate cancer. Clin Cancer Res 20(12):3198–3210. https://doi.org/10.1158/1078-0432.Ccr-13-3296
Trembley JH, Unger GM, Tobolt DK, Korman VL, Wang G, Ahmad KA, Slaton JW, Kren BT, Ahmed K (2011) Systemic administration of antisense oligonucleotides simultaneously targeting CK2alpha and alpha' subunits reduces orthotopic xenograft prostate tumors in mice. Mol Cell Biochem 356(1–2):21–35. https://doi.org/10.1007/s11010-011-0943-x
Lamboley CR, Kake Guena SA, Toure F, Hebert C, Yaddaden L, Nadeau S, Bouchard P, Wei-LaPierre L, Laine J, Rousseau EC, Frenette J, Protasi F, Dirksen RT, Pape PC (2015) New method for determining total calcium content in tissue applied to skeletal muscle with and without calsequestrin. J Gen Physiol 145(2):127–153. https://doi.org/10.1085/jgp.201411250
Trembley JH, Qaiser F, Kren BT, Ahmed K (2015) CK2—a global regulator of cell death. In: Ahmed K, Issinger O-G, Szyszka R (eds) Protein kinase CK2 cellular function in normal and disease states, Advances in Biochemistry in Health and Disease, vol 12. Springer, Switzerland, pp 159–181. https://doi.org/10.1007/978-3-319-14544-0_10
Hessenauer A, Schneider CC, Gotz C, Montenarh M (2011) CK2 inhibition induces apoptosis via the ER stress response. Cell Signal 23(1):145–151. https://doi.org/10.1016/j.cellsig.2010.08.014
Trembley JH, Kren BT, Abedin MJ, Shaughnessy DP, Li Y, Dehm SM, Ahmed K (2019) CK2 Pro-survival role in prostate cancer is mediated via maintenance and promotion of androgen receptor and NFkappaB p65 expression. Pharmaceuticals 12(2):89. https://doi.org/10.3390/ph12020089
Csordas G, Renken C, Varnai P, Walter L, Weaver D, Buttle KF, Balla T, Mannella CA, Hajnoczky G (2006) Structural and functional features and significance of the physical linkage between ER and mitochondria. J Cell Biol 174(7):915–921. https://doi.org/10.1083/jcb.200604016
Orrenius S, Gogvadze V, Zhivotovsky B (2015) Calcium and mitochondria in the regulation of cell death. Biochem Biophys Res Commun 460(1):72–81. https://doi.org/10.1016/j.bbrc.2015.01.137
Marchi S, Patergnani S, Missiroli S, Morciano G, Rimessi A, Wieckowski MR, Giorgi C, Pinton P (2018) Mitochondrial and endoplasmic reticulum calcium homeostasis and cell death. Cell Calcium 69:62–72. https://doi.org/10.1016/j.ceca.2017.05.003
Fliniaux I, Germain E, Farfariello V, Prevarskaya N (2018) TRPs and Ca2+ in cell death and survival. Cell Calcium 69:4–18. https://doi.org/10.1016/j.ceca.2017.07.002
Arrigoni G, Marin O, Pagano MA, Settimo L, Paolin B, Meggio F, Pinna LA (2004) Phosphorylation of calmodulin fragments by protein kinase CK2. Mech Aspects Struct Conseq Biochem 43(40):12788–12798. https://doi.org/10.1021/bi049365c
Pan J, Zhang S, Borchers CH (2016) Protein species-specific characterization of conformational change induced by multisite phosphorylation. J Proteomics 134:138–143. https://doi.org/10.1016/j.jprot.2015.12.002
Zhivotovsky B, Orrenius S (2011) Calcium and cell death mechanisms: a perspective from the cell death community. Cell Calcium 50(3):211–221. https://doi.org/10.1016/j.ceca.2011.03.003
Carafoli E, Krebs J (2016) Why calcium? How calcium became the best communicator. J Biol Chem 291(40):20849–20857. https://doi.org/10.1074/jbc.R116.735894
Cali T, Brini M, Carafoli E (2017) Regulation of cell calcium and role of plasma membrane calcium ATPases. Int Rev Cell Mol Biol 332:259–296. https://doi.org/10.1016/bs.ircmb.2017.01.002
Monteith GR, Prevarskaya N, Roberts-Thomson SJ (2017) The calcium-cancer signalling nexus. Nat Rev Cancer 17(6):367–380. https://doi.org/10.1038/nrc.2017.18
Grimm S (2012) The ER-mitochondria interface: the social network of cell death. Biochim Biophys Acta 1823(2):327–334. https://doi.org/10.1016/j.bbamcr.2011.11.018
Ivanova H, Kerkhofs M, La Rovere RM, Bultynck G (2017) Endoplasmic reticulum-mitochondrial Ca2+ fluxes underlying cancer cell survival. Front Oncol 7:70. https://doi.org/10.3389/fonc.2017.00070
Stewart TA, Yapa KTDS (1848) Monteith GR (2015) Altered calcium signaling in cancer cells. Biochimica et Biophysica Acta (BBA) 10:2502–2511. https://doi.org/10.1016/j.bbamem.2014.08.016
Naon D (1843) Scorrano L (2014) At the right distance: ER-mitochondria juxtaposition in cell life and death. Bba-Mol Cell Res 10:2184–2194. https://doi.org/10.1016/j.bbamcr.2014.05.011
Stewart JM (2020) TRPV6 as a target for cancer therapy. J Cancer 11(2):374–387. https://doi.org/10.7150/jca.31640
Lehen'kyi V, Flourakis M, Skryma R, Prevarskaya N (2007) TRPV6 channel controls prostate cancer cell proliferation via Ca(2+)/NFAT-dependent pathways. Oncogene 26(52):7380–7385. https://doi.org/10.1038/sj.onc.1210545
Prevarskaya N, Skryma R, Shuba Y (2018) Ion channels in cancer: are cancer hallmarks oncochannelopathies? Physiol Rev 98(2):559–621. https://doi.org/10.1152/physrev.00044.2016
Acknowledgements
KA holds the title of Senior Research Career Scientist awarded by the U.S. Department of Veterans Affairs. M.A. was recipient of a scholarship awarded by the Higher Education Commission of Pakistan.
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The views expressed in this article are those of the authors and do not necessarily reflect the position or policy of the U.S. Department of Veterans Affairs or the U.S. government.
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This work was supported by Merit Review research funds BX003282 awarded by the Department of Veterans Affairs (K.A.), and research grant R01CA150182 awarded by the National Cancer Institute, NIH, Department of Health and Human Services (K.A.).
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Conceptualization, MA, JHT, KA; methodology, MA, JHT, BTK, KA; experimental work, MA, JHT; statistical analysis, MA, JHT; discussion of results and data, MA, JHT, BTK, AKN, KA; manuscript preparation, MA, JHT, KA; final review and editing, MA, JHT, BTK, AKN, KA; funding acquisition, KA.
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Afzal, M., Kren, B.T., Naveed, A.K. et al. Protein kinase CK2 impact on intracellular calcium homeostasis in prostate cancer. Mol Cell Biochem 470, 131–143 (2020). https://doi.org/10.1007/s11010-020-03752-4
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DOI: https://doi.org/10.1007/s11010-020-03752-4