Persistent augmentation of natural-killer- and T-cell-mediated cytotoxicity in peripheral blood mononuclear cells pulsed in vitro with high-dose recombinant interleukin-2 prior to culturing with a low maintenance dose

1994 ◽  
Vol 39 (1) ◽  
pp. 34-40
Author(s):  
P. A. Palmer ◽  
J. G. M. Scharenberg ◽  
B. M. E. von Blomberg ◽  
A. G. M. Stam ◽  
C. J. L. M. Meijer ◽  
...  
Keyword(s):  
Peripheral Blood Mononuclear Cells ◽  
Peripheral Blood ◽  
Maintenance Dose ◽  
Mononuclear Cells ◽  
Interleukin 2 ◽  
High Dose ◽  
Peripheral Blood Mononuclear ◽  
Blood Mononuclear Cells ◽  
Recombinant Interleukin 2

scholarly journals Cytokine Production in Cell Culture by Peripheral Blood Mononuclear Cells from Immunocompetent Hosts

1998 ◽  
Vol 5 (1) ◽  
pp. 78-81 ◽  
Author(s):  
Rohit K. Katial ◽  
Doris Sachanandani ◽  
Carolyn Pinney ◽  
Michael M. Lieberman
Keyword(s):  
Peripheral Blood Mononuclear Cells ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Interleukin 2 ◽  
Pokeweed Mitogen ◽  
Peripheral Blood Mononuclear ◽  
Necrosis Factor Alpha ◽  
Blood Mononuclear Cells ◽  
Factor Alpha

ABSTRACT The production of interleukin 2 (IL-2) gamma interferon, IL-4, tumor necrosis factor alpha (TNF-α), TNF-β, IL-5, and IL-10 in vitro by peripheral blood mononuclear cells cultured from healthy immunocompetent subjects after mitogen stimulation was determined. The mitogens used were concanavalin A, phytohemagglutinin, pokeweed mitogen, and Staphylococcus aureus Cowen. The results obtained provide a normal range for the production of these cytokines under specified conditions in vitro.

scholarly journals Modulation of the Functions of Goat Peripheral Blood Mononuclear Cells by Fasciola gigantica Thioredoxin Peroxidase In Vitro

Pathogens ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 758 ◽  
Author(s):  
Ai-Ling Tian ◽  
Xiaowei Tian ◽  
Dan Chen ◽  
Mingmin Lu ◽  
Guillermo Calderón-Mantilla ◽  
...  
Keyword(s):  
Peripheral Blood Mononuclear Cells ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Transforming Growth Factor ◽  
Interleukin 2 ◽  
Fasciola Gigantica ◽  
Peripheral Blood Mononuclear ◽  
Blood Mononuclear Cells ◽  
Thioredoxin Peroxidase

The liver fluke Fasciola gigantica has a remarkable ability to establish a long-term infection within the hepatobiliary system of the mammalian definitive host. F. gigantica achieves this by producing excretory–secretory molecules, which have immunomodulatory activities. In an effort to elucidate the immunomodulatory functions of F. gigantica thioredoxin peroxidase protein (FgTPx), we expressed recombinant FgTPx (rFgTPx) in Escherichia coli bacteria and examined its effects on several functions of goat peripheral blood mononuclear cells (PBMCs) in vitro. Sequence analysis revealed that FgTPx is related to a thioredoxin-like superfamily. Western blot analysis showed that rFgTPx was recognized by the sera of goats experimentally infected by F. gigantica. The specific binding of rFgTPx protein to the surface of goat PBMCs was demonstrated by immunofluorescence staining. We investigated the influence of serial concentrations of rFgTPx on various functions of goat PBMCs. All concentrations of rFgTPx increased the secretion of interleukin-2 (IL-2), IL-4, IL-10, IL-17, transforming growth factor-beta (TGF-β), and interferon gamma (IFN-γ), but inhibited PBMC proliferation, migration, and monocyte phagocytosis. Goat PBMCs exposed to 20–40 μg/mL of rFgTPx secreted increased levels of nitric oxide (NO), and 10–40 μg/mL of rFgTPx promoted cell apoptosis. These findings indicate that rFgTPx influences various functions of goat PBMCs by interacting with a large number of cellular targets, ultimately to promote the parasite’s survival. The roles of rFgTPx and their interacting proteins warrant further investigation.

scholarly journals Optimization of methods for peripheral blood mononuclear cells isolation and expansion of human gamma delta T cells

2021 ◽  
Vol 17 (3) ◽  
pp. 460-470
Author(s):  
Mohd Wajid Ali Khan ◽  
Keyword(s):  
T Cells ◽  
Peripheral Blood Mononuclear Cells ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Immune Surveillance ◽  
Interleukin 2 ◽  
Γδ T Cells ◽  
Peripheral Blood Mononuclear ◽  
Blood Mononuclear Cells

Human Vγ9/Vδ2 T cells (γδ T cells) are immune surveillance cells both in innate and adaptive immunity and are a possible target for anticancer therapies, which can induce immune responses in a variety of cancers. Small non-peptide antigens such as zoledronate can do activation and expansion of T cells in vitro. It is evident that for adoptive cancer therapies, large numbers of functional cells are needed into cancer patients. Hence, optimization of methods needs to be carried out for the efficient expansion of these T cells. Standardization of peripheral blood mononuclear cells (PBMCs) isolation was devised. Cytokines (interleukin 2 (IL-2) and interleukin 15 (IL-15)) and zoledronate were also standardized for different concentrations. It was found that an increased number of PBMCs were recovered when washing was done at 1100 revolution per minute (rpm). Significantly high expansion fold was (2524 ± 787 expansion fold) achieved when stimulation of PBMCs was done with 1 μM of zoledronate and both cytokines IL-2 and IL-15 supported the expansion and survival of cells ISSN 0973-2063 (online) 0973-8894 (print) Bioinformation 17(3): 460-469 (2021) ©Biomedical Informatics (2021) 461 at the concentrations of 100 IU/ml and 10 ng/ml respectively. 14-day cultures showed highly pure (91.6 ± 5.1%) and live (96.5 ± 2.5%) expanded γδ T cells. This study aimed to standardize an easy to manipulate technique for the expansion of γδ T cells, giving a higher yield.

I. The morphology of interleukin-2 stimulated human peripheral blood mononuclear cells killing tumor Cells in vitro

1987 ◽  
Vol 45 ◽  
pp. 734-735
Author(s):  
G. R. Hook ◽  
M. A. Greenwood ◽  
D. Barba ◽  
B. Ikejiri ◽  
S. N. Chen ◽  
...  
Keyword(s):  
Tumor Cells ◽  
Peripheral Blood Mononuclear Cells ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Interleukin 2 ◽  
Lak Cells ◽  
Target Cells ◽  
Peripheral Blood Mononuclear ◽  
Blood Mononuclear Cells

Culture of peripheral blood mononuclear cells (PBM) with recombinant interleukin-2 (rIL-2) results in lymphokine activated killer cells (LAK) that can kill fresh non-cultured, natural killer cell resistant tumor cells. Clinically, human LAK and rIL-2 immunotherapy can cause regression of some tumors in humans and preliminary trials using LAK cells to treat glioma patients are beginning . LAK effector cells are a subset of the LAK population that must physically contact target cells in order to kill them. In this and the following abstract, we report the morphology of LAK cells killing human glioma derived cells in vitro.PBM cells were obtained from normal adult volunteers and stimulated in culture for 4 days with rIL-2 (Cetus, Emeryville, CA). Glioma-derived cells were obtained at surgery from a recurrent glioma patient and established as a cell line (SNB-92). SNB-92 cells were positive for glial fibrillary acidic protein and were used at passage 8.

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