Abstract
We evaluated the synergistic activity of AS101 (ammonium trichloro-(dioxoethylene-0-0′)-tellurate) with the protein kinase C (PKC) activators, Bryostatin-1 and phorbol-12-myristate-13-acetate (PMA), on human myelocytic leukemia cell differentiation in vitro, and in a mouse model. Use of AS101 with Bryostatin-1 or with a low concentration of PMA resulted in the differentiation of HL-60 cell line to cells with characteristics of macrophages. A similar synergistic effect was found in vivo. Compared with mice treated with AS101 alone or with Bryostatin-1 alone, the infiltration of leukemic cells into the spleen and the peritoneum of mice treated with both compounds, as well as the number of the HL-60 colonies extracted from those organs, were markedly reduced. The antitumor effects were associated with significantly prolonged survival (100% for 125 days) of the treated mice. Finally, the mechanism of action of this antitumor effect was explored, and was found to involve the Ras/extracellular signal-regulated kinase signaling pathway. Combined treatment with AS101 and Bryostatin-1 synergistically increased p21waf1 expression levels independently of p53. Upregulation of p21waf1 was necessary for HL-60 cell differentiation, which was found to be both c-raf-1 and mitogen-activated protein kinase dependent. This study may have implications for the development of strategies to induce differentiation in myeloid leukemias, myelodysplasias and possibly in other malignancies.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 12 print issues and online access
$259.00 per year
only $21.58 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Schiffer CA . Acute myeloid leukemia in adults. In: Holland JF, Frei E, Bast RC, Kufe DW, Morton DL and Weichselbaum RR (eds). Cancer Medicine. Lea & Febiger: Philadelphia, PA, 1993, pp 1907–1933.
Rovera G, Santoli D, Damsky C . Human promyeloblastic leukemia cells in culture differentiate into macrophage-like cells when treated with a phorbol diester. Proc Natl Acad Sci USA 1979; 76: 2779–2783.
Breitman TR, Selonick SE, Collins SJ . Induction of differentiation of the human promyeloblastic leukemia cell line (HL-60) by retinoic acid. Proc Natl Acad Sci USA 1980; 77: 2936–2940.
Miyaura C, Abe E, Kuribayashi T, Tanaka H, Konno K, Nishii Y et al. 1 alpha,25-Dihydroxyvitamin D3 induces differentiation of human myeloid leukemia cells. Biochem Biophys Res Commun 1981; 102: 937–943.
Aihara H, Asaoka Y, Yoshida K, Nishizuka Y . Sustained activation of protein kinase C is essential to HL-60 cell differentiation to macrophage. Proc Natl Acad Sci USA 1991; 88: 11062–11066.
Mischak H, Pierce JH, Goodnight J, Kazanietz MG, Blumberg PM, Mushinski JF . Phorbol ester-induced myeloid differentiation is mediated by protein kinase C-alpha and -delta and not by protein kinase C-beta II, -epsilon, -zeta, and -eta. J Biol Chem 1993; 268: 20110–20115.
Huberman E, Callaham MF . Induction of terminal differentiation in human promyeloblastic leukemia cells by tumor-promoting agents. Proc Natl Acad Sci USA 1979; 76: 1293–1297.
Pettit GR, Herald CL, Doubek DL, Herald DL . Isolation and structure of Bryostatin-1. J Am Chem Soc 1982; 104: 6846–6848.
Steube KG, Grunicke D, Quentmeier H, Drexler HG . Different effects of the two protein kinase C activators Bryostatin-1 and TPA on growth and differentiation of human monocytic leukemia cell lines. Leuk Res 1993; 17: 897–901.
Hornung RL, Pearson JW, Beckwith M, Longo DL . Preclinical evaluation of Bryostatin-1 as an anticancer agent against several murine tumor cell lines: in vitro versus in vivo activity. Cancer Res 1992; 52: 101–107.
Pettit GR . The Bryostatins. In: Herz W, Kirby GW, Steglich W and Tamm CH (eds). Progress in the Chemistry of Organic Natural Products. Springer-Verlag: New York, 1991, pp 154–195.
Mohammad RM, Wall NR, Dutcher JA, Al Katib AM . The addition of Bryostatin-1 to cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) chemotherapy improves response in a CHOP-resistant human diffuse large cell lymphoma xenograft model. Clin Cancer Res 2000; 6: 4950–4956.
Berkow RL, Kraft AS . Bryostatin-1, a non-phorbol macrocyclic lactone, activates intact human polymorphonuclear leukocytes and binds to the phorbol ester receptor. Biochem Biophys Res Commun 1985; 131: 1109–1116.
Kraft AS, William F, Pettit GR, Lilly MB . Varied differentiation responses of human leukemias to Bryostatin-1. Cancer Res 1989; 49: 1287–1293.
Kraft AS, Smith JB, Berkow RL . Bryostatin-1, an activator of the calcium phospholipid-dependent protein kinase, blocks phorbol ester-induced differentiation of human promyeloblastic leukemia cells HL-60. Proc Natl Acad Sci USA 1986; 83: 1334–1338.
Smith JB, Smith L, Pettit GR . Bryostatins: potent, new mitogens that mimic phorbol ester tumor promoters. Biochem Biophys Res Commun 1985; 132: 939–945.
Kolch W, Heidecker G, Kochs G, Hummel R, Vahidi H, Mischak H et al. Protein kinase C alpha activates RAF-1 by direct phosphorylation. Nature 1993; 364: 249–252.
Das D, Pintucci G, Stern A . MAPK-dependent expression of p21WAF and p27kip1 in PMA-induced differentiation of HL60 cells. FEBS Lett 2000; 472: 50–52.
Sherr CJ, Roberts JM . CDK inhibitors: positive and negative regulators of G1-phase progression. Genes Dev 1999; 13: 1501–1512.
Sredni B, Caspi RR, Klein A, Kalechman Y, Danziger Y, Ben Ya'akov M et al. A new immunomodulating compound (AS-101) with potential therapeutic application. Nature 1987; 330: 173–176.
Hayun M, Naor Y, Weil M, Albeck M, Peled A, Don J et al. The immunomodulator AS101 induces growth arrest and apoptosis in multiple myeloma: association with the Akt/Survivin pathway. Biochem Pharmacol 2006; 72: 1423–1431.
Sredni B, Tichler T, Shani A, Catane R, Kaufman B, Strassmann G et al. Predominance of TH1 response in tumor-bearing mice and cancer patients treated with AS101. J Natl Cancer Inst 1996; 88: 1276–1284.
Kalechman Y, Longo DL, Catane R, Shani A, Albeck M, Sredni B . Synergistic anti-tumoral effect of paclitaxel (Taxol)+AS101 in a murine model of B16 melanoma: association with ras-dependent signal-transduction pathways. Int J Cancer 2000; 86: 281–288.
Kalechman Y, Shani A, Dovrat S, Whisnant JK, Mettinger K, Albeck M et al. The antitumoral effect of the immunomodulator AS101 and paclitaxel (Taxol) in a murine model of lung adenocarcinoma. J Immunol 1996; 156: 1101–1109.
Kalechman Y, Albeck M, Oron M, Sobelman D, Gurwith M, Horwith G et al. Protective and restorative role of AS101 in combination with chemotherapy. Cancer Res 1991; 51: 1499–1503.
Sredni B, Kalechman Y, Shalit F, Albeck M . Synergism between AS101 and PMA in lymphokine production. Immunology 1990; 69: 110–116.
Sredni B, Kalechman Y, Albeck M, Gross O, Aurbach D, Sharon P et al. Cytokine secretion effected by synergism of the immunomodulator AS101 and the protein kinase C inducer Bryostatin-1. Immunology 1990; 70: 473–477.
Pluznik DH, Sachs L . The cloning of normal ‘mast’ cells in tissue culture. J Cell Physiol 1965; 66: 319–324.
Mayne M, Cheadle C, Soldan SS, Cermelli C, Yamano Y, Akhyani N et al. Gene expression profile of herpesvirus-infected T cells obtained using immunomicroarrays: induction of proinflammatory mechanisms. J Virol 2001; 75: 11641–11650.
Tanaka TS, Jaradat SA, Lim MK, Kargul GJ, Wang X, Grahovac MJ et al. Genome-wide expression profiling of mid-gestation placenta and embryo using a 15,000 mouse developmental cDNA microarray. Proc Natl Acad Sci USA 2000; 97: 9127–9132.
Gunji H, Hass R, Kufe D . Internucleosomal DNA fragmentation during phorbol ester-induced monocytic differentiation and G0/G1 arrest. J Clin Invest 1992; 89: 954–960.
Harper JW, Adami GR, Wei N, Keyomarsi K, Elledge SJ . The p21 CDK-interacting protein Cip1 is a potent inhibitor of G1 cyclin-dependent kinases. Cell 1993; 75: 805–816.
Carroll MP, May WS . Protein kinase C-mediated serine phosphorylation directly activates Raf-1 in murine hematopoietic cells. J Biol Chem 1994; 269: 1249–1256.
Schwaller J, Peters UR, Pabst T, Niklaus G, Macfarlane DE, Fey MF et al. Up-regulation of p21WAF1 expression in myeloid cells is activated by the protein kinase C pathway. Br J Cancer 1997; 76: 1554–1557.
Park MJ, Park IC, Lee HC, Woo SH, Lee JY, Hong YJ et al. Protein kinase C-alpha activation by phorbol ester induces secretion of gelatinase B/MMP-9 through ERK 1/2 pathway in capillary endothelial cells. Int J Oncol 2003; 22: 137–143.
Kharbanda S, Saleem A, Emoto Y, Stone R, Rapp U, Kufe D . Activation of Raf-1 and mitogen-activated protein kinases during monocytic differentiation of human myeloid leukemia cells. J Biol Chem 1994; 269: 872–878.
el Deiry WS, Tokino T, Velculescu VE, Levy DB, Parsons R, Trent JM et al. WAF1, a potential mediator of p53 tumor suppression. Cell 1993; 75: 817–825.
Acknowledgements
We are grateful to Dr Yona Kalechman for helpful discussion and critical reading of this paper. We would like to thank Mr Uri Karo, for the FACS analysis. The skillful secretarial assistance of J Hertzfelt is cordially acknowledged. This study was a part of Michal Hayun's PhD thesis. This work was partly supported by The Safdié Institute for AIDS and Immunology Research; The Dave and Florence Muskovitz Chair in Cancer Research; Mr Norman Cohen; The Comet Walerstein Cancer Research Program and the Intramural Research of the NIH, National Institute of Aging.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Hayun, M., Okun, E., Hayun, R. et al. Synergistic effect of AS101 and Bryostatin-1 on myeloid leukemia cell differentiation in vitro and in an animal model. Leukemia 21, 1504–1513 (2007). https://doi.org/10.1038/sj.leu.2404746
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1038/sj.leu.2404746