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Potential of immunotherapies in the mediation of antileukemic responses for patients with acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS) - With a focus on Dendritic cells of leukemic origin (DCleu).
Clinical Immunology ( IF 8.6 ) Pub Date : 2020-05-26 , DOI: 10.1016/j.clim.2020.108467
Christian Ansprenger 1 , Daniel Christoph Amberger 1 , Helga Maria Schmetzer 1
Affiliation  

New (non-immunotherapeutic) treatment-strategies for AML/MDS-patients are under development. Dendritic cells (DCs) and ‘leukemia-derived DC’ (DCleu) connect the innate and the adaptive immunesystem and (re-)activate it, in their capacity as professional antigen-presenting cells (APCs). They can be generated ex vivo from peripheral blood mononuclear cells (PBMNCs) or whole blood (WB), containing the –physiological-cellular/soluble microenvironment of individual patients using various DC/DCleu-generating methods or (for WB) minimalized ‘Kits’, containing granulocyte-macrophage-colony-stimulating-factor (GM-CSF) and a second response-modifier. Proof for DC/DCleu-mediated activation of the immune-system after T-cell-enriched mixed lymphocyte culture (MLC) is done by flowcytometry, demonstrating increased fractions of certain activated, leukemia-specific or antileukemic cell-subsets of the innate and the adaptive immune-system.

Generation of DC/DCleu is possible independent of patients' age, MHC-, mutation- or transplantation-status. In vivo-treatment of AML-/MDS-patients with blast-modulating, DC/DCleu- inducing ‘Kits’ could contribute to create migratory DCs, as well as antileukemically reactivated and memory-mediating immune-cells, which patrol tissue and blood and could contribute to stabilizing disease or remissions.



中文翻译:

免疫疗法在介导急性髓细胞性白血病(AML)和骨髓增生异常综合症(MDS)患者的抗白血病反应中的潜力-着重于白血病来源的树突状细胞(DCleu)。

针对AML / MDS患者的新(非免疫治疗)治疗策略正在开发中。树突状细胞(DC)和“白血病衍生的DC”(DC leu)连接先天性和适应性免疫系统,并以其作为专业抗原呈递细胞(APC)的能力(重新)激活它。它们可以离体产生自外周血单核细胞(PBMNC)或全血(WB),其中包含使用各种DC / DC leu产生方法或(对于WB)最小化的'Kits'试剂盒,每个患者的–生理细胞/可溶性微环境含有粒细胞-巨噬细胞集落刺激因子(GM-CSF)和第二种反应调节剂。DC / DC leu的证明T细胞富集的混合淋巴细胞培养(MLC)后,通过流式细胞术完成了免疫介导的免疫系统激活,表明先天性和适应性免疫系统的某些活化,白血病特异性或抗白血病细胞亚群的比例增加。

DC / DC leu的产生可能与患者的年龄,MHC,突变或移植状态无关。用爆炸调节DC / DC leu诱导的“试剂盒”对AML / MDS患者进行体内治疗,可能有助于产生迁移性DC,以及抗白血病活化和记忆介导的免疫细胞,巡逻组织和血液并可能有助于稳定疾病或缓解症状。

更新日期:2020-05-26
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