骨髓间充质基质细胞来源的外泌体微小 RNA 谱分析在急性髓系白血病中的作用:在白血病发生中的意义。

Micro-RNA Profiling of Exosomes from Marrow-Derived Mesenchymal Stromal Cells in Patients with Acute Myeloid Leukemia: Implications in Leukemogenesis.

机构信息

Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada.

Centre for Biologics Evaluation, Biologics Genetic and Therapies Directorate, Health Products Food Branch, Health Canada, Ottawa, ON, Canada.

出版信息

Stem Cell Rev Rep. 2017 Dec;13(6):817-825. doi: 10.1007/s12015-017-9762-0.

Abstract

Gene regulatory networks in AML may be influenced by microRNAs (miRs) contained in exosomes derived from bone marrow mesenchymal stromal cells (MSCs). We sequenced miRs from exosomes isolated from marrow-derived MSCs from patients with AML (n = 3) and from healthy controls (n = 3; not age-matched). Known targets of mIRs that were significantly different in AML-derived MSC exosomes compared to controls were identified. Of the five candidate miRs identified by differential packaging in exosomes, only miR-26a-5p and miR-101-3p were significantly increased in AML-derived samples while miR-23b-5p, miR-339-3p and miR-425-5p were significantly decreased. Validation of the predicted change in gene expression of the potential targets was investigated by interrogating gene expression levels from public datasets of marrow-derived CD34-selected cells from patients with AML (n = 69) and healthy donors (n = 40). Two molecules with decreased gene expression in AML (EZH2 and GSK3β) were predicted by the miR profiling and have been previously implicated in AML while three molecules were increased in AML-derived cells and have not been previously associated with leukemogenesis (KRBA2, RRBP1 and HIST2H 2BE). In summary, profiling miRs in exosomes from AML-derived MSCs allowed us to identify candidate miRs with potential relevance in AML that could yield new insights regarding leukemogenesis or new treatment strategies.

摘要

AML 中的基因调控网络可能受骨髓间充质基质细胞 (MSCs) 来源的外泌体中 microRNAs (miRs) 的影响。我们对来自 AML 患者 (n=3) 和健康对照者 (n=3; 非年龄匹配) 的骨髓来源 MSC 分离的外泌体中的 miRs 进行了测序。鉴定了与对照组相比 AML 衍生 MSC 外泌体中差异包装的已知 miR 靶标。在差异包装的 5 个候选 miRs 中,仅 miR-26a-5p 和 miR-101-3p 在 AML 衍生样本中显著增加,而 miR-23b-5p、miR-339-3p 和 miR-425-5p 则显著降低。通过分析来自 AML 患者 (n=69) 和健康供体 (n=40) 的骨髓 CD34 选择细胞的公共数据集的基因表达水平,研究了潜在靶基因表达预测变化的验证。miR 谱预测了两种在 AML 中基因表达降低的分子 (EZH2 和 GSK3β),这两种分子以前都与 AML 有关,而三种在 AML 衍生细胞中增加的分子以前与白血病发生无关 (KRBA2、RRBP1 和 HIST2H 2BE)。总之,从 AML 衍生的 MSC 外泌体中进行 miR 分析使我们能够识别与 AML 具有潜在相关性的候选 miR,这可能为白血病发生或新的治疗策略提供新的见解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f341/5730624/8509e89028e7/12015_2017_9762_Fig1_HTML.jpg

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