Biologic activities of recombinant human-beta-defensin-4 toward cultured human cancer cells

• Дата: 2013
• Автори: Gerashchenko, O.L., Zhuravel, E.V., Skachkova, O.V., Khranovska, N.N., Filonenko, V.V., Pogrebnoy, P.V., Soldatkina, M.A.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут експериментальної патології, онкології і радіобіології ім. Р.Є. Кавецького НАН України 2013
• Назва видання: Experimental Oncology
• Теми: Original contributions
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/145208
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Biologic activities of recombinant human-beta-defensin-4 toward cultured human cancer cells / O.L. Gerashchenko, E.V. Zhuravel, O.V. Skachkova, N.N. Khranovska, V.V. Filonenko, P.V. Pogrebnoy, A. Soldatkina // Experimental Oncology. — 2013. — Т. 35, № 2. — С. 76–82. — Бібліогр.: 37 назв. — англ.

Aim - the aim of the study was in vitro analysis of biological activity of recombinant human beta-defensin-4 (rec-hBD-4). Methods: hBD-4 cDNA was cloned into pGEX-2T vector, and recombinant plasmid was transformed into E. coli BL21(DE3) cells. To purify soluble fusion GST-hBD-4 protein, affinity chromatography was applied. Rec-hBD-4 was cleaved from the fusion protein with thrombin, and purified by reverse phase chromatography on Sep-Pack C18. Effects of rec-hBD-4 on proliferation, viability, cell cycle distribution, substrate-independent growth, and mobility of cultured human cancer cells of A431, A549, and TPC-1 lines were analyzed by direct cell counting technique, MTT assay, flow cytofluorometry, colony forming assay in semi-soft medium, and wound healing assay. Rech-BD-4 was expressed in bacterial cells as GST-hBD-4 fusion protein, and purified by routine 3-step procedure (affine chromatography on glutathione-agarose, cleavage of fusion protein by thrombin, and reverse phase chromatography). Analysis of in vitro activity of rec-hBD-4 toward three human cancer cell lines has demonstrated that the defensin is capable to affect cell behaviour in concentration-dependent manner. In 1 - 100 nM concentrations rec-hBD-4 significantly stimulates cancer cell proliferation and viability, and promotes cell cycle progression through G2/M checkpoint, greatly enhances colony-forming activity and mobility of the cells. Treatment of the cells with 500 nM of rec-hBD-4 resulted in opposite effects: significant suppression of cell proliferation and viability, blockage of cell cycle in G1/S checkpoint, significant inhibition of cell migration and colony forming activity.