ArticleIndian journal of hematology & blood transfusion : an official journal of Indian Society of Hematology and Blood Transfusion2016
Chronic Myelocytic Leukemia (CML) Patient-Derived Dendritic Cells Transfected with Autologous Total RNA Induces CML-Specific Cytotoxicity.
Article in Indian journal of hematology & blood transfusion : an official journal of Indian Society of Hematology and Blood Transfusion, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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5 authors at 3 institutions in 1 country.
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Abstract
The oncogenic bcr/abl1 fusion gene is a chronic myelogenous leukemia (CML)-specific antigen which is absent in normal tissues. This makes bcr/abl1 a perfect target for developing CML vaccines that elicit specific immune responses against minimal residual disease while sparing normal tissue. The aim of this study was to use different methods to induce dendritic cells (DCs) derived from patients with CML (CML-DCs) and analyze them for CML-specific tumor cytotoxicity for immune therapy. Bone marrow-derived mononuclear cells from ten CML patients were studied to induce CML-DC differentiation in the presence of recombinant human interleukin-4, rh-granulocyte-macrophage-colony stimulating factor, and tumor necrosis factor-alpha with either a total RNA-lipofectamine complex, total RNA or CML tumor lysate (freeze-thawed). CML-DC maturation, confirmed by expression of CD1α, CD40, CD80, CD83, CD86 and by real-time polymerase chain reaction, validated the CML-origin of these DC cells. CML-DCs stimulated cytotoxic T-cell (CTL) apoptosis, high levels of IL-12 secretion, and had significant inhibitory effect on K562 tumorigenicity in nude mice. CML-DCs pulsed with total RNA by lipofectamine transfection produced the strongest effect in tumor-specific CTL functions. These results indicate that CML-DCs transfected with total RNA by lipofectamine induce the strongest CTL cytotoxicity and have the greatest potential for CML immune therapy. This study holds promise for a DC-based strategy for inducing anti-leukemia responses and establishes a foundation for developing RNA vaccination against CML.
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