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Blood:抗CD43和抗CD44抗体涂层可在液体培养基中固定小鼠/人类造血干/祖细胞

2018-02-20 MedSci MedSci原创

中心点:抗CD43和抗CD44抗体涂层可固定活的小鼠和人类造血干细胞和祖细胞。抗体涂层可实现形成二维菌落、换液过程中无细胞识别丢失,并增加延时成像通量。摘要:示踪单个细胞识别是研究单个细胞行为动态的必要方法。高度运动的造血干细胞和祖细胞(HSPCs)移动迅速不易黏附,因此需要反复成像来保持细胞识别。更糟糕的是,HSPCs常在换液的过程中被洗脱。为克服上述限制,研究人员尝试以抗体涂层来降低体外HSP

中心点:

抗CD43和抗CD44抗体涂层可固定活的小鼠和人类造血干细胞和祖细胞。

抗体涂层可实现形成二维菌落、换液过程中无细胞识别丢失,并增加延时成像通量。

摘要:

示踪单个细胞识别是研究单个细胞行为动态的必要方法。高度运动的造血干细胞和祖细胞(HSPCs)移动迅速不易黏附,因此需要反复成像来保持细胞识别。更糟糕的是,HSPCs常在换液的过程中被洗脱。为克服上述限制,研究人员尝试以抗体涂层来降低体外HSPC的活性。

经实验发现,抗CD43和抗CD44抗体涂层可以浓度依赖性方式降低小鼠和人类的HSPCs的细胞活性。这使得在液体培养基中没有细胞混合情况下形成二维菌落,大大增加了延时成像通量,并且在换液过程中保持细胞位置。抗CD43,而非抗CD44抗体涂层,在浓度增加时,可减少小鼠HSPC增殖。抗体涂层对造血干细胞和多能祖细胞1-5(MPPs)的存活或粒细胞和巨核细胞系分化均无相关影响。各涂层对人类脐带CD34+的造血细胞的存活、增殖和分化也均无影响。

总而言之,利用抗体涂层,不仅可大大简化和加速对悬浮细胞的连续分析,还可使其在动态而非静态的培养条件下进行研究。

原始出处

Dirk Loeffler, et al. Mouse and human HSPC immobilization in liquid culture by CD43 or CD44-antibody coating.Blood  2018  :blood-2017-07-794131;  doi: https://doi.org/10.1182/blood-2017-07-794131

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    2019-01-12 qidongfanjian
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    2018-02-22 俅侠
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