Effects of cytokine-like polypeptide EMAP II and flutamide on the testosterone-stimulated prostate of castrated rats
Reznikov OH, Chaĭkovs'ka LV, Poliakova LI, Sachyns'ka OV
V.Komissarenko Institute of Endocrinology and Metabolism, Kyiv, Ukraine
DOI: https://doi.org/10.15407/fz57.04.012
Abstract
The effects of separate and combined administration of cytokine-like polypeptide EMAP II and flutamide, a non-steroid antiandrogen, on morphology and function of the accessory sexual glands in castrated rats stimulated with testosterone propionate were studied. We found antiangiogenic, procoagulating and proapoptotic effects of EMAP II in the ventral prostate. Combined administration of the preparations enhanced their antiprostatic effects, which were manifested in inhibition of the androgen-dependent processes in prostate tissues, changes in proliferation and apoptosis, DNA, RNA and protein contents. We conclude that combined administration of EMAP II and flutamide can be used for development of new therapeutic modalities in prostate cancer.
Keywords:
EMAP II, flutamide, apoptosis, proliferation, ratprostate, castration, testosterone propionate.
References
- Dubrovsky AL, Brown J., Kornelyuk A.I. Bacterial expression of full-length and truncated forms of the EMAP II cytokine and the mammalian cytokine-like domain of mammalian tyrosyl-tRNA synthetase . Biopolymers and Cell. 2000. 16, N 3. P. 229-235.
CrossRef
- Shatkin A. Colorimetric methods for determining DNA, RNA and protein . Methods of Virology and Molecular Biology . Ed. K. Hubel, M.P. Saltzman. M .: Mir, 1972. P. 84-89.
- Alam S., McNeel D.G. DNA vaccines for the treatment of prostate cancer . Expert Rev Vaccines. 2010. N 7. P. 731-745.
CrossRef
PubMed
- Antonarakis E.S., Carducci M.A., Eisenberger M.A. Novel targeted therapeutics for metastatic castration-resistant prostate cancer . Cancer Lett. 2010. 291, N 1. P. 1-13.
CrossRef
PubMed PubMedCentral
- Aragon-Ching J.B. Dahut W.L. VEGF inhibitors and prostate cancer therapy . Curr Mol Pharmacol. 2009. 2,N 2. P.161-168.
CrossRef
PubMed PubMedCentral
- Awasthi N., Schwarz M.A., Verma V., Cappiello C, Schwarz R.E. Endothelial monocyte activating polypeptide II interferes with VEGF-induced proangiogenic signaling . Lab Invest. 2009. 89, N 1. P. 38-46.
CrossRef
PubMed
- Chen Y., Clegg N.J., Scher H.I. Anti-androgens and androgen-depleting therapies in prostate cancer: new agents for an established target . Lancet Oncol. 2009.-10,N 10. P.981-991.
CrossRef
- Folkman J. Is tissue mass regulated by vascular endothelial cells? Prostate as the first evidence . Endocrinology. 1998. 139, N 2. P. 441-442.
CrossRef
PubMed
- Franck-Lissbrant I., Hflggstrirm S., Damber J.E., Bergh A. Testosterone stimulates angiogenesis and vascular regrowth in the ventral prostate in castrated adult rats . Ibid. 1998. 139, N 2. P. 451-456.
CrossRef
PubMed
- Ivakhno S. S., Kornelyuk A. I. Cytokine-like activities of some aminoacyl-tRNA synthetases and auxiliary p43 cofactor of aminoacylation reaction and their role in oncogenesis . Exper. Oncol. 2004. 26, N 4. P. 250-255.
- Kao J., Houck K., Fan Y., Haehnel I., Libutti S.K., Kayton M.L., Grikscheit T., Chabot J., Nowygrod R., Greenberg S. Characterization of a novel tumor-derived cytokine Endothelia-monocyte activating polypeptide II . J. Biol. Chem. 1994. 9, N 40. P.25106-25119.
- Kao J., Ryan J., Brett G., Chen J., Shen H., Fan Y.G., Godman G., Familletti P.C., Wang F., Pan Y.C. Endothelial monocyte-activating polypeptide II. A novel tumour-derived polypeptide that activates host-response mechanisms . Ibid. 1992. 267, N 28. P. 20239- 20247.
- Li Y, Cozzi P.J. Angiogenesis as a strategic target for prostate cancer therapy . Med Res Rev. 2010. 30, N 1. P. 23-66.
- Shibata Y, Kashiwagi B., Arai S., Fukabori Y, Suzuki K., Honma S., Yamanaka H. Direct regulation of prostate blood flow by vascular endothelial growth factor and its participation in the androgenic regulation of prostate blood flow in vivo . Endocrinology. 2004. 145, N 10. P. 4507-4512.
CrossRef
PubMed
- Shibata Y, Ono Y, Kashiwagi B., Suzuki K., Fukabori Y, Honma S., Yamanaka H. Hormonal and morphologic evaluation of the effects of antiandrogens on the blood supply of the rat prostate . Urology. 2003. 62, N 5. P. 942-946.
CrossRef
- Reddy G.P., Barrack E.R., Dou Q.P., Menon M., Pelley R., Sarkar F.H., Sheng S. Regulatory processes affecting androgen receptor expression, stability, and function: potential targets to treat hormone-refractory prostate cancer . J. Cell Biochem. 2006. 98, N 6. P. 1408-1423.
CrossRef
PubMed
- Vozianov A., Reznikov A., Klimenko I. Androgen deprivation strategy in prostate cancer Kyiv: Naukova Dumka, 2001. 240 p.
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