Expression Pattern of Interferon-γ in Human Leukemic T Cell Lines Following Treatment with Phytoheamagglutinin, phorbol myristate acetate and Lipopolysaccharide
نویسندگان
چکیده مقاله:
Background: As a T helper type 1 (Th1) derived cytokine, Interferon gamma (IFN-γ) is an important regulator of inflammatory immune responses. Furthermore, IFN-γ plays an essential role in defense against tumors and intracellular pathogens. This study was designed to assess the pattern of IFN-γ production in human leukemic (Jurkat and Molt-4) T cell lines in vitro. Methods: Jurkat and Molt-4 cells were cultured in whole RPMI-1640 media. The cells were imbedded at a density of 2×106 cell/ml. The cells were stimulated with different concentrations of Phytoheamagglutinin (PHA) (2-10 µg/ml), phorbol myristate acetate (PMA) (1-25 ng/ml) or lipopolysaccharide (LPS) (1-4 μg/ml) for activation and cytokine production for 48 hours. Then the cell-conditioned media were used for IFN-γ assay. Analysis of variance (ANOVA) was done for comparing the groups statistically. Results: PHA and PMA substantially augmented IFN-γ level in human leukemic T cells (Molt-4 and Jurkat) in a dose-dependent manner after 48 hours of incubation compared with untreated control cells, whereas LPS did not have any significant effect on IFN-γ production in human leukemic T cell lines compared with unstimulated cells. Conclusion: human leukemic Jurkat and Molt-4 T cell lines could potentially produce IFN-γ with different amounts. PHA was a more potent stimulator of IFN-γ production than PMA. Molt-4 cell line could produce more IFN-γ than Jurkat cell line. These cells could be appropriate for studying the mechanisms of action of immunomodulators as well as screening the IFN-γ stimulators/inhibitors.
منابع مشابه
Alteration in glycosphingolipid pattern during phorbol-12-myristate-13-acetate-induced cell differentiation in human T-lymphoid leukemia cells.
We analyzed the patterns of glycosphingolipids (GSLs) from a line of cells derived from a clone of the human T-cell leukemia cells (CEM) that had been induced to differentiate by phorbol-12-myristate-13-acetate (PMA) into cells with a suppressor-like phenotype. We characterized the differentiation state of the cells by immunofluorescence by using anti-cell surface differentiation-specific monoc...
متن کاملProfiles of MMP-2 Expression in Jurkat, Molt-4 and U937 Cells
Background: Leukemia is a malignant proliferative disorder of the hematopoietic cells. The important role of angiogenesis in leukemia has been reported by several studies. Matrix metalloproteinases (MMPs) are a large group of endopeptidases which degredate the extracellular matrix and play an important role in angiogenesis. Objective: The present study was conducted to evaluate the patterns of ...
متن کاملProduction of tumor necrosis factor/cachectin by human T cell lines and peripheral blood T lymphocytes stimulated by phorbol myristate acetate and anti-CD3 antibody
The induction of mRNA synthesis and accumulation of TNF/cachectin and lymphotoxin (LT) mRNAs in T leukemic cell lines and freshly isolated T cells were studied by Northern blot analyses. Without stimulation, TNF mRNA was barely detected in four T cell lines (CEM, KE4, MT-1, and SKW-3) and not detectable in Molt-4 and Jurkat cells, while a considerable amount of TNF mRNA was observed in HSB-2 ce...
متن کاملPatterns of Vascular Endothelial Growth Factor Expression in Hematopoietic Malignant Cells
Background and Objective: Vascular endothelial growth factor (VEGF) is a cytokine which is overexpressed in many malignant cancers including leukemia. VEGF plays an important role in tumor invasion and metastasis. Determination of the pattern of VEGF expression in human leukemic cell lines could be useful not only in screening of new antileukemic agents but also to study the mechanism of their ...
متن کاملModulation of neutrophil-reduced pyridine nucleotide content following stimulation with phorbol myristate acetate and chemotactic factors.
Modulation of NAD(P)H in human neutrophils (PMN) following stimulation with phorbol myristate acetate (PMA) or chemotactic factors was determined by flow cytometry. Stimulation of PMN with 1 microgram/ml of PMA results in a time-dependent decrease in fluorescence, attributable to the oxidation of NAD(P)H. The decrease in fluorescence did not occur with PMN from a patient with chronic granulomat...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ذخیره در منابع من قبلا به منابع من ذحیره شده{@ msg_add @}
عنوان ژورنال
دوره 9 شماره None
صفحات 12- 17
تاریخ انتشار 2017-03
با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023