Cell Stem Cell:白血病干细胞借助脂肪组织躲避化疗药物杀伤

2016-07-05 佚名 生物谷

近日,来自美国科罗拉多大学的研究人员在国际学术期刊Cell Stem Cell上发表了一项最新研究进展,他们发现白血病干细胞能够在性腺旁脂肪组织中产生代谢适应性变化,从而抵抗化疗药物的杀伤作用,这项研究为解决白血病的耐药问题提供了重要的理论基础。之前有研究表明脂肪组织是正常造血干细胞在骨髓外的一个储蓄池,并且有可能促进肿瘤发育。在这项最新研究中,研究人员发现一个白血病干细胞的亚群能够利用性腺旁脂肪


近日,来自美国科罗拉多大学的研究人员在国际学术期刊Cell Stem Cell上发表了一项最新研究进展,他们发现白血病干细胞能够在性腺旁脂肪组织中产生代谢适应性变化,从而抵抗化疗药物的杀伤作用,这项研究为解决白血病的耐药问题提供了重要的理论基础。

之前有研究表明脂肪组织是正常造血干细胞在骨髓外的一个储蓄池,并且有可能促进肿瘤发育。

在这项最新研究中,研究人员发现一个白血病干细胞的亚群能够利用性腺旁脂肪组织作为一个合适环境支撑癌细胞代谢从而躲避化疗药物的杀伤。他们建立了一个慢性髓系白血病急变期小鼠模型,通过研究发现驻留在脂肪组织中的白血病干细胞呈现出促炎症表型,同时能够诱导性腺旁脂肪组织的脂质分解。

研究人员发现脂肪组织的脂质分解过程能够为白血病干细胞的脂肪酸氧化代谢提供燃料,特别是对于表达脂肪酸转运蛋白CD36的细胞亚群来说这种现象更加活跃。经过分析,CD36+的白血病干细胞具有独特的代谢特性,并且在脂肪组织中特别丰富,性腺旁脂肪组织提供的微环境也帮助这群白血病干细胞躲避了化疗药物的杀伤作用。

除此之外,CD36还是一部分人类慢性髓系白血病细胞和一些具有类似生物学特性的急性髓系白血病细胞的标记物。

这些发现都表明白血病细胞与脂肪组织之间的相互作用能够为白血病干细胞创造一个独特的微环境,满足白血病细胞的代谢需求,同时也能够支持CD36+白血病干细胞亚群的生存。该研究为解决白血病耐药问题,找到新的治疗方法提供了重要的理论基础。

原始出处

Haobin Ye1, 3, Biniam Adane1, Nabilah Khan1.et.al.Leukemic Stem Cells Evade Chemotherapy by Metabolic Adaptation to an Adipose Tissue Niche.Cell Stem Cell.2016

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    2017-01-21 维他命
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