Differentiating effect of thalidomide and GM-CSF combination on HL-60 acute promyelocytic leukemia cells

Aim: To investigate whether granulocyte-macrophage colony-stimulating factor (GM-CSF) with or without thalidomide can induce apoptosis and differentiation of HL-60 acute promyelocytic leukemia cell line in vitro. Methods: Effect of GM-CSF and thalidomide on proliferation of HL-60 cells was evaluated...

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Published in:Experimental Oncology
Date:2006
Main Authors: Ural, A.U., Avcu, F., Zerman, M., Yilmaz, M.I., Pekel, A., Beyzadeoglu, M.
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Language:English
Published: Інститут експериментальної патології, онкології і радіобіології ім. Р.Є. Кавецького НАН України 2006
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Cite this:Differentiating effect of thalidomide and GM-CSF combination on HL-60 acute promyelocytic leukemia cells / A.U. Ural, F. Avcu, M. Zerman, M.I. Yilmaz, A. Pekel, M. Beyzadeoglu // Experimental Oncology. — 2006. — Т. 28, № 3. — С. 216-219. — Бібліогр.: 16 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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author Ural, A.U.
Avcu, F.
Zerman, M.
Yilmaz, M.I.
Pekel, A.
Beyzadeoglu, M.
author_facet Ural, A.U.
Avcu, F.
Zerman, M.
Yilmaz, M.I.
Pekel, A.
Beyzadeoglu, M.
citation_txt Differentiating effect of thalidomide and GM-CSF combination on HL-60 acute promyelocytic leukemia cells / A.U. Ural, F. Avcu, M. Zerman, M.I. Yilmaz, A. Pekel, M. Beyzadeoglu // Experimental Oncology. — 2006. — Т. 28, № 3. — С. 216-219. — Бібліогр.: 16 назв. — англ.
collection DSpace DC
container_title Experimental Oncology
description Aim: To investigate whether granulocyte-macrophage colony-stimulating factor (GM-CSF) with or without thalidomide can induce apoptosis and differentiation of HL-60 acute promyelocytic leukemia cell line in vitro. Methods: Effect of GM-CSF and thalidomide on proliferation of HL-60 cells was evaluated by MTT assay, cell cycle analysis was performed by propidium iodide staining approach and flow cytometry, and apoptosis rate was analyzed using FITC-conjugated annexin-V and FACScan flow cytometry. Results: The study revealed that thalidomide alone at high concentrations inhibited HL-60 cell growth and induced apoptosis. Three days treatment of low-dose thalidomide in combination with GM-CSF induced marked terminal differentiation of HL-60 cells, as it was assessed by increased expression of differentiation antigens on cell surface. Conclusion: Treatment of HL-60 cells by low concentration of thalidomide combined with GM-CSF induced terminal differentiation of HL60 cells in vitro, which may be advantageous for the elaboration of novel therapeutic regimens in patients with differentiation-inducible leukemias. Цель: изучить эффект гранулоцитарно-макрофагального колониестимулирующего фактора (ГМ-КСФ) в сочетании с талидомидом на индукцию апоптоза и дифференцировку клеток острого промиелоцитарного лейкоза линии HL-60 in vitro. Методы: для оценки пролиферации и жизнеспособности клеток HL-60 применяли MTT анализ, для изучения клеточного цикла — окраску пропидиум бромидом и проточную цитометрию. Для оценки апоптоза клетки линии HL-60 обрабатывали талидомидом, ГМ-КСФ, и совместно талидомидом и ГМ-КСФ в течении 48 ч, и затем метили анексином, конъюгированным с FITC, и анализировали с помощью проточной цитометрии. Результаты: талидомид в высоких концентрациях ингибирует пролиферацию клеток HL-60 и вызывает апоптоз. В сочетании с ГМ-КСФ в течение 3 дней талидомид в низкой концентрации индуцировал терминальную дифференцировку клеток HL-60, о чем свидетельствовало появление экспрессии дифференцировочных антигенов на поверхности клеток. Выводы: применение талидомида в низкой концентрации в сочетании с ГМ-КСФ вызывает терминальную дифференцировку клеток HL-60.
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fulltext 216 Experimental Oncology 28, 216–219, 2006 (September) Induction chemotherapy with standard cytotoxic chemotherapeutic agents produces complete remis‑ sion in the majority of the patients with acute myelo‑ geneous leukemia (AML). Unfortunately, most of these patients relapse and eventually die from the disease. Efforts to increase the overall and disease‑free sur‑ vival rates in AML are focused on improving the effi‑ cacy of post remission consolidation by administering dose‑intensified cytotoxic chemotherapeutic agents alone or combined with autologous or allogeneic stem cell support [6]. Besides the antiangiogenic and immunomodula‑ tory effects of thalidomide, it acts directly by inducing apoptosis or cell cycle block at G1 phase, in multiple myeloma (MM) cell lines and in MM cells that are re‑ sistant to melphalan, doxorubicin, and dexamethasone [5]. Furthermore, thalidomide has been reported to have antitumor activity via induction of apoptosis in AML cells [12], whereas single agent thalidomide has not been regarded as an optimal choice of therapy for salvaging patients with poor prognosis or refractory AML in clinical studies [14]. Early studies have shown that most AML blasts express cytokine receptors for myeloid growth factors. Moreover, granulocyte‑macrophage colony‑stimula‑ ting factor (GM‑CSF), interleukin 3, and granulocyte colony‑stimulating factor (G‑CSF) increase colony formation and induce proliferation in up to 80% of primary AML blasts. In addition, signals that stimulate cell cycle progression (e. g. c‑myc) inhibit differentia‑ tion, while many agents with differentiating activity are cytostatic [10]. Thus, inhibition of cell cycling may be a permissive or inductive requirement for differentiation. Matsui et al. [8] have demonstrated that combination of clinical applicable cell cycle inhibitors (e. g. phenyl‑ butyrate, hydroxyurea and bryostatin‑1) with growth factors induces terminal favorable differentiation of treatment‑resistant myeloid leukemias. To further investigate the antileukemic and dif‑ ferentiation potential of thalidomide, we studied its differentiating and proapoptotic effects in vitro toward HL‑60 cells alone or in combination with GM‑CSF. materials and methods Cell line. The human acute myelogeneous leukemia HL‑60 cell line was kindly provided by the Department of Molecular Pharmacology and Therapeutics (Memo‑ differentiatinG effect of thalidomide and Gm-csf combination on hl-60 acute promyelocytic leukemia cells A.U. Ural1, 2, *, F. Avcu1, 2, M. Zerman3, M.I. Yilmaz3, A. Pekel4, M. Beyzadeoglu5 1Department of Hematology, Gulhane Military Medical Academy, Ankara, Turkey 2Medical Research Center, Gulhane Military Medical Academy, Ankara, Turkey 3Department of Internal Medicine, Gulhane Military Medical Academy, Ankara, Turkey 4Department of Immunology, Gulhane Military Medical Academy, Ankara, Turkey 5Department of Radiation Oncology, Gulhane Military Medical Academy, Ankara, Turkey Aim: To investigate whether granulocyte-macrophage colony-stimulating factor (GM-CSF) with or without thalidomide can induce apoptosis and differentiation of HL-60 acute promyelocytic leukemia cell line in vitro. Methods: Effect of GM-CSF and thalido- mide on proliferation of HL-60 cells was evaluated by MTT assay, cell cycle analysis was performed by propidium iodide staining approach and flow cytometry, and apoptosis rate was analyzed using FITC-conjugated annexin-V and FACScan flow cytometry. Results: The study revealed that thalidomide alone at high concentrations inhibited HL-60 cell growth and induced apoptosis. Three days treatment of low-dose thalidomide in combination with GM-CSF induced marked terminal differentiation of HL-60 cells, as it was assessed by increased expression of differentiation antigens on cell surface. Conclusion: Treatment of HL-60 cells by low concentration of thalidomide combined with GM-CSF induced terminal differentiation of HL60 cells in vitro, which may be advantageous for the elaboration of novel therapeutic regimens in patients with differentiation-inducible leukemias. Key Words: thalidomide, GM-CSF, HL-60, differentiation, apoptosis. Received: August 30, 2006. *Correspondence: Fax: 90-312-304-4150 E-mail: aural@gata.edu.tr; aliugurum@yahoo.com Abbreviations used: AML — acute myelogeneous leukemia; ATRA — all-trans-retinoic-acid; DMSO — dimethyl sulfoxide; FITC — fluorescein isothiocyanate; G-CSF — granulocyte colony- stimulating factor; GM-CSF — granulocyte-macrophage colony- stimulating factor; MM — multiple myeloma; MTT — 3-(4,5-dime- thyl-thiazoyl)-2,5-diphenyl-SH-tetrazolium bromide; PI — propi- dium iodide. Exp Oncol 2006 28, 3, 216–219 Experimental Oncology 28, 216–219, 2006 (September) 217 rial Sloan‑Kettering Cancer Center, USA). HL‑60 cells were maintained in RPMI 1640 medium (Sigma, USA) supplemented with 10% heat‑inactivated fetal calf serum (Sigma, USA), and 2 mM L‑glutamine (Sigma, USA), 100 μg/mL streptomycin and 100 U/mL penicillin (Sigma, USA) at 37 °C in a 5% CO2 atmosphere. Reagents. Thalidomide was kindly provided by Celgene (USA). Leucomax 400 μg (Novartis, Turkey) was used as a source of GM‑CSF. A stock solution of GM‑CSF was prepared in phosphate buffered saline (PBS) (Sigma, USA), pH 7.4 and filter‑sterilized using a 0.22 µm filter. Thalidomide was dissolved in 0.1% DMSO (Sigma, USA) and diluted in culture medium (0.01 to 100 µM) immediately before use. MTT assay.  The MTT (Biological Industries, Is‑ rael) cell viability assay was performed as previously described [15], and the absorbance at 570‑nm was recorded using a 96‑well microplate reader (Bio‑Tek Instruments Inc., USA). Each experiment was repeated 3 times. In some studies, target HL‑60 cells were plated at a density of 5 x 104 per well in 24‑well plates (Costar, USA) with media containing 200 U/ml GM‑CSF for increasing time of incubation to determine the prolife‑ rative effect of GM‑CSF. In each separate experiment, following incubation, cells were harvested, suspended in PBS and cell number determined using haemocy‑ tometer (Bright‑line, Hausser Scientic, USA). Cell cycle analysis, and determination of apop- tosis. For cell cycle analysis, the cells were washed once in PBS and then stained with PI using a com‑ mercial kit (Cycle Test Plus DNA Reagents Kit; Becton Dickinson, USA) for 10 min at 4 °C in the dark, and the cells were analyzed with a flow cytometer (FACScan; Becton Dickinson, USA). Analysis was carried out on three separate experiments. To assess apoptosis, cells were seeded in a 24‑well plate and treated with thalidomide, GM‑CSF, or their combination for 48 h, and then the cells were labeled with FITC‑conjugated annexin‑V (Becton Dickinson, USA) and detected by FACScan flow cytometry. Treated cells were dissociated and washed twice in a binding buffer (10 mM HEPES, 140 mM NaCl and 2.5 mM CaCl2). Cells were then labeled with 5 μL Annexin‑V‑FITC/50 μL binding buffer for 15 min in the dark and at room temperature. Immediately prior to analysis on the flow cytometer, the samples were also labeled with 250 μL of a 10 mg/ml stock PI solution. Analysis was carried out in triplicate. Determination of differentiation markers. The extent of monocyte differentiation induced in HL‑60 cells by thalidomide (20 μM) with or without GM‑CSF (200 U/ml) after 48 h incubation was determined by monitoring the CD14, CD11b and CD11c surface markers by flow cytometry. Aliquots of 1 x 106 HL‑60 cells were harvested at various time points, centri‑ fuged, and washed twice with 1 x PBS. The cell pellet was resuspended in 100 μL PBS; and 20 μL of mono‑ clonal antibodies specific for CD14, CD11b and CD11c (Becton Dickinson, USA) were added, and the mixture was incubated in the dark at 2–8 °C for 15–30 min. The excess antibody was washed off with 1 x PBS, and the pellet was resuspended in 500 μL of 1 x PBS. The cells were analyzed by FACScan flow cytometer. Statistical analysis.  Student’s two‑tailed t‑test was used to determine statistical significance of de‑ tected differences. A value of p < 0.05 was considered statistically significant. results and discussion As shown in Fig. 1, a, MTT assay revealed significant antiproliferative effect of thalidomide against HL‑60 cells after 48 and 72 h of incubation with the agent only if its concentration is higher than 50 µM (p < 0.01). fig. 1. Effect of thalidomide (a) and 200 U/ml GM‑CSF (b) on proliferation of HL‑60 cells. a: HL‑60 cells were incubated with thalidomide for 48 (‑‑) and 72 h (‑‑). Results are expressed as control or absolute cell numbers (%). The data are presented as Mean ± SD of three separate experiments *Statistically significant values compared with control (p < 0.01). Since thalidomide has been reported to have antitumor activity [12], we studied its influence on programmed cell death in HL‑60 cells. Apoptotic cells were detected as a significant sub‑G1 shoulder (Mean 32.7 ± 3.5%; p < 0.001) representing hypodiploid cells in cultures that had been treated with 50 µM thalido‑ mide, but not in untreated cells (Table 1). Thalidomide (20 µM) inhibited the cells proliferation associated with cell cycle arrest at G1 but without significant cytotoxicity as assessed by MTT assay (Fig. 1, a) or flow cytometric analysis of apoptosis (Table 1). The percentage of apop‑ totic, necrotic, and viable cells after single or combined treatment was evaluated by Annexin‑V binding. Repre‑ sentative data are shown in Table 2. A minimal apoptotic rate was observed with low dose thalidomide when compared to untreated cells. In contrast, treatment of cells with high dose thalidomide (50 µM) dramatically augmented apoptosis concordant with cell cycle analy‑ 218 Experimental Oncology 28, 216–219, 2006 (September) sis data. Thalidomide alone has not displayed enhanced CD14, CD11b and CD11c expression (Fig. 2). Table 1. Analysis of cell cycle distribution of HL-60 cells incubated with thalidomide, GM-CSF, or their combination for 48 h. Results are presented as % cells and represent the mean ± SD of three separate experiments Cell cycle phase Control Thalido- mide (20 µM) Thalido- mide (50 µM) GM-CSF (200 U/ml) Thalidomide (20 µM) + GM-CSF (200 U/ml) G0-G1 28.4 ± 1.4 48.2 ± 6.2 22.3 ± 1.2 29.1 ± 2.2 49.2 ± 7.1 S 65.2 ± 3.4 34.5 ± 2.3 34.8 ± 2.7 68.7 ± 4.1 38.7 ± 4.2 G2-M 6.4 ± 0.9 16.2 ± 1.3 10.2 ± 1.2 2.2 ± 0.4 12.1 ± 1.7 Sub-G1 (apop- tosis) 1.1 ± 0.2 32.7 ± 3.5 Table 2. Flow cytometric analysis of apoptotic rate of HL-60 cells incu- bated for 48 h with thalidomide, GM-CSF, or their combination Staining Control Thalido- mide (20 µM) Thalido- mide (50 µM) GM-CSF (200 U/ml) Thalidomide (20 µM) + GM-CSF (200 U/ml) Annexin V-/PI-, viable cells (%) 88.5 70.9 9.5 88.8 91.2 Annexin V+/PI– early apoptotic cells (%) 3.8 7.2 2.3 1.5 2.3 Annexin V+/PI+, late apoptotic cells (%) 2.5 13.3 80.6 3.4 2.7 Annexin V–/ PI+, necrotic cells (%) 5.2 8.6 7.6 4.5 4.5 fig. 2. Effects of thalidomide and GM‑CSF on surface antigen expression on HL‑60 cells. Cells were incubated for 48 h in the absence (Control) or presence of 20 μΜ thalidomide with or without 200 U/ml GM‑CSF and then assessed for the surface expression of CD14, CD11b and CD11a by flow cytometry. Results represent means of three separate experiments; bars, SD. P was determined for the comparison of all treatment groups *Statistically significant values compared with control (p < 0.01). Enhanced terminal differentiation of leukemic cells resulting from the combined use of growth fac‑ tors and pharmacological differentiating agents other than thalidomide has been described [16]. A study by Matsui et al. [8] has shown that neutralizing antibod‑ ies directed against GM‑CSF, completely inhibited the activity of all differentiating agents tested. These data suggest that pharmacological differentiating agents require the additional activity of growth factors for inducing tumor cell terminal differentiation. An ad‑ vantage of using thalidomide is its additional effect to the neutralizing effect of some proinflammatory, pro‑ apoptotic cytokines [7], whereby thalidomide is also known to induce apoptosis and cell cycle block at G1 phase in leukemic cells [12]. However, the stated dif‑ ferentiating effect of thalidomide by affecting cell cycle could not specifically be considered attributable to the drug in our study. The other clinically applicable cell cycle inhibitors (i. e. phenylbutyrate, hydroxyurea and bryostatin) in combination with lineage specific growth factors may induce tumor cell differentiation. The association between cell cycle inhibition and cellular differentiation is well recognized; the induction of differentiation of both normal and malignant cells is as‑ sociated with cell cycle inhibition that is mediated by the cycle dependent kinase (cdk) activity and the induction of cdk inhibitor p21 [13]. The inhibition of cell cycle may play an important role in the activity of pharmacological differentiating agents where most agents, such as ATRA, vitamin D, share this biological property despite interact‑ ing with a diverse array of cellular targets [9]. Although HL‑60 cells express functional GM‑CSF receptors [11], GM‑CSF alone had no significant effect on the differentiation of cells as assessed by analysis of CD14, CD11b and CD11c expression (Fig. 2). However, GM‑CSF alone had a significant effect on the growth of HL‑60 cells compared to control (Fig. 1, b). The ad‑ dition of GM‑CSF to thalidomide displayed enhance‑ ment CD14, CD11b and CD11c expression on HL‑60 cells compared to the control (p < 0.01) (Fig. 2). But GM‑CSF and thalidomide combination has not induced apoptosis (Table 1). Lineage‑specific growth factors, such as G‑CSF and GM‑CSF, have pleitropic effects on both malignant and normal cells with enhanced proliferation, cell sur‑ vival promotion resulting in favorable differentiation and desired functional activity of myeloid cells. The stimula‑ tory effects of myeloid growth factors on leukemic cell growth may predominate in most settings; however it has been shown previously that GM‑CSF preferentially enhances the differentiation, rather than proliferation, of malignant progenitors [4]. This could be a result of an abnormal function or expression of G‑CSF/GM‑CSF receptor‑associated signal transduction proteins such as Jak kinases or STAT transcription factors [3]. In fact, it has been reported that Jak2 kinase is necessary for STAT activation by GM‑CSF receptor and is required for cellular proliferation [1, 2]. Therefore, the Jak‑STAT pathway might be critical for the anti‑apoptotic activity of GM‑CSF in HL‑60 cells treated with a combination of thalidomide and GM‑CSF in our study. In conclusion, we have shown that blocking the cell cycle by thalidomide at G1 augmented growth factor driven differentiation of HL‑60 cells. Our current data indicate that the full induction of terminal differentiation requires cell cycle inhibition by any agent combined with lineage specific growth factors, and the combination of GM‑CSF and thalidomide may be used in the clinical practice for the management of acute promyelocytic or differentiation‑inducible leukemias. Experimental Oncology 28, 216–219, 2006 (September) 219 Copyright © Experimental Oncology, 2006 acknowledGement This study was supported by a research grant from Gulhane Medical Faculty Research Center. references 1. Biethahn S, Alves F, Wilde S, Hiddemann W, Spieker- mann K. Expression of granulocyte colony‑stimulating factor‑ and granulocyte‑macrophage colony‑stimulating fac‑ tor‑associated signal transduction proteins of the JAK/STAT pathway in normal granulopoiesis and in blast cells of acute myelogenous leukemia. Exp Hematol 1999; 27: 885–94. 2. Blalock WL, Weinstein-Oppenheimer C, Chang F. Signal transduction, cell cycle regulatory, and anti‑apoptotic pathways regulated by IL‑3 in hematopoietic cells: possible sites for intervention with anti‑neoplastic drugs. Leukemia 1999; 13: 1109–66. 3. Breitman TR, He RY. Combinations of retinoic acid with either sodium butyrate, dimethyl sulfoxide, or hexamethylene bisacetamide synergistically induce differentiation of the hu‑ man myeloid leukemia cell line HL60. Cancer Res 1990; 50: 6268–73. 4. Colombat P, Santini V, Delwel R, Krefft J, Bredmond JL, Lowenberg B. Primary human acute myeloblastic leukaemia: an analysis of in vitro granulocytic maturation following stimulation with retinoic acid and G‑CSF. Br J Haematol 1991; 79: 382–9. 5. Hideshima T, Chauhan D, Shima Y. Thalidomide and its analog overcome drug resistance of human multiple myeloma cells to conventional therapy. Blood, 2000; 96: 2943–50. 6. Kimby E, Nygran P, Glimelius B. A systematic overview of chemotherapy effects in acute myeloid leukemia. Acta Oncol 2001; 40: 231–52. 7. Klausner JD, Freedman VH, Kaplan G. Thalidomide as an anti‑TNF‑alpha inhibitor: implications for clinical use. Clin Immunol Immunopathol 1996; 81: 219–23. 8. Matsui WH, Gladstone DE, Vala MS, Barher JP, Brodsky RA, Smith BD, Jones RJ. The role of growth factors in the activity of pharmacological differentiation agents. Cell Growth Differ 2002; 13: 275–83. 9. Rots NY, Iavarone A, Bromleigh V, Freedman LP. In‑ duced differentiation of U937 cells by 1,25‑dihydroxyvitamin D3 involves cell cycle arrest in G1 that is preceded by a tran‑ sient proliferative burst and an increase in cyclin expression. Blood 1999; 93: 2721–9. 10. Shinjo K, Takeshita A, Ohnishi K, Ohno R. Granulocyte colony‑stimulating factor receptor at various differentiation stages of normal and leukemic hematopoietic cells. Leuk Lymphoma 1997; 25: 37–46. 11. Shoji M, Fukuhara T, Winton EF, Berdel WE, Vog- ler WR. Different mechanisms of inhibition by alkyl‑lyso‑ phospholipid and phorbol ester of granulocyte‑macrophage colony‑stimulating factor binding to human leukemic cell lines. Exp Hematol 1994; 22:13–8. 12. Steins MB, Padro T, Bieker R. Efficacy and safety of thalidomide in patients with acute myeloid leukemia. Blood 2002; 99: 834–9. 13. Studzinski GP, Harrison LE. Differentiation‑related changes in the cell cycle traverse. Int Rev Cytol 1999; 189: 1–58. 14. Thomas DA, Estey E, Giles FJ. Single agent thalidomide in patients with relapsed or refractory acute myeloid leukaemia. Br J Haematol 2003; 123: 436–41. 15. Ural AU, Yilmaz MI, Avcu F, Ozcan A, Ide T, Kurt B, Yalcin A. The bisphosphonate zoledronic acid induces cyto‑ toxicity in human myeloma cell lines with enhancing effects of dexamethasone and thalidomide. Int J Hematol 2003; 78: 443–9. 16. Valtieri M, Boccoli G, Testa U, Barletta C, Peschle C. Two‑step differentiation of AML‑193 leukemic line: terminal maturation is induced by positive interaction of retinoic acid with granulocyte colony‑stimulating factor (CSF) and vitamin D3 with monocyte CSF. Blood 1991; 77: 1804–12. ГМ-КСФ в Сочетании С талидоМидоМ вызывает диФФеренцировКу КлетоК линии hl-60 СтроГо проМиелоцитарноГо лейКоза человеКа Цель: изучить эффект гранулоцитарно-макрофагального колониестимулирующего фактора (ГМ-КСФ) в сочетании с талидомидом на индукцию апоптоза и дифференцировку клеток острого промиелоцитарного лейкоза линии HL-60 in vitro. Методы: для оценки пролиферации и жизнеспособности клеток HL-60 применяли MTT анализ, для изучения клеточного цикла — окраску пропидиум бромидом и проточную цитометрию. Для оценки апоптоза клетки линии HL-60 обрабатывали талидомидом, ГМ-КСФ, и совместно талидомидом и ГМ-КСФ в течении 48 ч, и затем метили анекси- ном, конъюгированным с FITC, и анализировали с помощью проточной цитометрии. Результаты: талидомид в высоких концентрациях ингибирует пролиферацию клеток HL-60 и вызывает апоптоз. В сочетании с ГМ-КСФ в течение 3 дней талидомид в низкой концентрации индуцировал терминальную дифференцировку клеток HL-60, о чем свидетельствовало появление экспрессии дифференцировочных антигенов на поверхности клеток. Выводы: применение талидомида в низкой концентрации в сочетании с ГМ-КСФ вызывает терминальную дифференцировку клеток HL-60. Ключевые слова: талидомид, ГМ-КСФ, HL-60, дифференцировка, апоптоз.
id nasplib_isofts_kiev_ua-123456789-137571
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
issn 1812-9269
language English
last_indexed 2025-12-02T14:18:31Z
publishDate 2006
publisher Інститут експериментальної патології, онкології і радіобіології ім. Р.Є. Кавецького НАН України
record_format dspace
spelling Ural, A.U.
Avcu, F.
Zerman, M.
Yilmaz, M.I.
Pekel, A.
Beyzadeoglu, M.
2018-06-17T13:03:39Z
2018-06-17T13:03:39Z
2006
Differentiating effect of thalidomide and GM-CSF combination on HL-60 acute promyelocytic leukemia cells / A.U. Ural, F. Avcu, M. Zerman, M.I. Yilmaz, A. Pekel, M. Beyzadeoglu // Experimental Oncology. — 2006. — Т. 28, № 3. — С. 216-219. — Бібліогр.: 16 назв. — англ.
1812-9269
https://nasplib.isofts.kiev.ua/handle/123456789/137571
Aim: To investigate whether granulocyte-macrophage colony-stimulating factor (GM-CSF) with or without thalidomide can induce apoptosis and differentiation of HL-60 acute promyelocytic leukemia cell line in vitro. Methods: Effect of GM-CSF and thalidomide on proliferation of HL-60 cells was evaluated by MTT assay, cell cycle analysis was performed by propidium iodide staining approach and flow cytometry, and apoptosis rate was analyzed using FITC-conjugated annexin-V and FACScan flow cytometry. Results: The study revealed that thalidomide alone at high concentrations inhibited HL-60 cell growth and induced apoptosis. Three days treatment of low-dose thalidomide in combination with GM-CSF induced marked terminal differentiation of HL-60 cells, as it was assessed by increased expression of differentiation antigens on cell surface. Conclusion: Treatment of HL-60 cells by low concentration of thalidomide combined with GM-CSF induced terminal differentiation of HL60 cells in vitro, which may be advantageous for the elaboration of novel therapeutic regimens in patients with differentiation-inducible leukemias.
Цель: изучить эффект гранулоцитарно-макрофагального колониестимулирующего фактора (ГМ-КСФ) в сочетании с талидомидом на индукцию апоптоза и дифференцировку клеток острого промиелоцитарного лейкоза линии HL-60 in vitro. Методы: для оценки пролиферации и жизнеспособности клеток HL-60 применяли MTT анализ, для изучения клеточного цикла — окраску пропидиум бромидом и проточную цитометрию. Для оценки апоптоза клетки линии HL-60 обрабатывали талидомидом, ГМ-КСФ, и совместно талидомидом и ГМ-КСФ в течении 48 ч, и затем метили анексином, конъюгированным с FITC, и анализировали с помощью проточной цитометрии. Результаты: талидомид в высоких концентрациях ингибирует пролиферацию клеток HL-60 и вызывает апоптоз. В сочетании с ГМ-КСФ в течение 3 дней талидомид в низкой концентрации индуцировал терминальную дифференцировку клеток HL-60, о чем свидетельствовало появление экспрессии дифференцировочных антигенов на поверхности клеток. Выводы: применение талидомида в низкой концентрации в сочетании с ГМ-КСФ вызывает терминальную дифференцировку клеток HL-60.
This study was supported by a research grant from Gulhane Medical Faculty Research Center.
en
Інститут експериментальної патології, онкології і радіобіології ім. Р.Є. Кавецького НАН України
Experimental Oncology
Original contributions
Differentiating effect of thalidomide and GM-CSF combination on HL-60 acute promyelocytic leukemia cells
ГМ-КСФ в сочетании с талидомидом вызывает дифференцировку клеток линии HL-60 строго промиелоцитарного лейкоза человека
Article
published earlier
spellingShingle Differentiating effect of thalidomide and GM-CSF combination on HL-60 acute promyelocytic leukemia cells
Ural, A.U.
Avcu, F.
Zerman, M.
Yilmaz, M.I.
Pekel, A.
Beyzadeoglu, M.
Original contributions
title Differentiating effect of thalidomide and GM-CSF combination on HL-60 acute promyelocytic leukemia cells
title_alt ГМ-КСФ в сочетании с талидомидом вызывает дифференцировку клеток линии HL-60 строго промиелоцитарного лейкоза человека
title_full Differentiating effect of thalidomide and GM-CSF combination on HL-60 acute promyelocytic leukemia cells
title_fullStr Differentiating effect of thalidomide and GM-CSF combination on HL-60 acute promyelocytic leukemia cells
title_full_unstemmed Differentiating effect of thalidomide and GM-CSF combination on HL-60 acute promyelocytic leukemia cells
title_short Differentiating effect of thalidomide and GM-CSF combination on HL-60 acute promyelocytic leukemia cells
title_sort differentiating effect of thalidomide and gm-csf combination on hl-60 acute promyelocytic leukemia cells
topic Original contributions
topic_facet Original contributions
url https://nasplib.isofts.kiev.ua/handle/123456789/137571
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