中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (13): 2120-2125.doi: 10.3969/j.issn.2095-4344.0499

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

全反式维甲酸处理下HL-60细胞在E-选择素上的滚动黏附

肖 静,李趣欢,杨碧珊,方 颖,吴建华   

  1. 华南理工大学生物科学与工程学院,广东省广州市 510006
  • 修回日期:2017-12-18 出版日期:2018-05-08 发布日期:2018-05-08
  • 通讯作者: 吴建华,博士,教授,华南理工大学生物科学与工程学院,广东省广州市 510006; 并列通讯作者:李趣欢,博士,副教授,华南理工大学生物科学与工程学院,广东省广州市 510006
  • 作者简介:肖静,女,1989年生,湖南省衡阳市人,汉族,华南理工大学在读硕士,主要从事生物力学方面的研究。
  • 基金资助:

    国家自然科学基金(31170887,11432006,11272125,31200705);华南理工大学中央高校基本科研业务费(2017MS098,2017MS106)

Rolling adhesion of HL-60 cells treated with all-trans retinoic acid on E-selectin

Xiao Jing, Li Qu-huan, Yang Bi-shan, Fang Ying, Wu Jian-hua   

  1. School of Bioscience and Engineering, South China University of Technology, Guangzhou 510006, Guangdong Province, China
  • Revised:2017-12-18 Online:2018-05-08 Published:2018-05-08
  • Contact: Wu Jian-hua, Ph.D., Professor, School of Bioscience and Engineering, South China University of Technology, Guangzhou 510006, Guangdong Province, China; Li Qu-huan, Ph.D., Associate professor, School of Bioscience and Engineering, South China University of Technology, Guangzhou 510006, Guangdong Province, China
  • About author:Xiao Jing, Master candidate, School of Bioscience and Engineering, South China University of Technology, Guangzhou 510006, Guangdong Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 31170887, 11432006, 11272125, 31200705; the Fundamental Research Funds for the Central Universities, No. 2017MS098, 2017MS106

摘要:

文章快速阅读:

文题释义:
全反式维甲酸:
是维生素A的代谢中间产物,有着广泛的生理学和药理学活性,是肿瘤细胞分化治疗最具代表性的诱导剂。
HL-60细胞:是从一位患有急性早幼粒细胞白血病的36岁白人女性患者外周血中分离建立的细胞株,可作为研究急性早幼粒细胞白血病的细胞模型。
E-选择素:是跨膜糖蛋白,作为选择性家族中的一员,可与白细胞上的配体分子相互作用介导细胞的黏附。

 

摘要
背景:
全反式维甲酸能诱导早幼粒细胞向成熟粒细胞分化,是治疗急性早幼粒细胞白血病的理想手段。然而全反式维甲酸治疗过程中出现的分化综合征对其治疗效果有一定影响,该并发症与细胞形态改变、黏附分子表达及功能差异密切相关,特别是整合素和选择素家族。
目的:研究不同流体剪切力下,全反式维甲酸处理的HL-60细胞在E-选择素上的滚动黏附,揭示蕴含其中的药物影响效应和力学调控机制。
方法:利用平行平板流动腔,驱动经或未经全反式维甲酸处理的HL-60细胞在铺有E-选择素的基质上滚动,记录滚动过程,提取平均滚动速度和平均停留时间等参数。其中,HL-60细胞采用1×10-6 mol/L的全反式维甲酸处理48,72,96 h,剪切力取值为0.02,0.04,0.06 Pa,底板铺展E-选择素的质量浓度为40 μg/L。
结果与结论:①随剪切力的升高,经和未经全反式维甲酸处理的HL-60细胞在E-选择素上的滚动速度曲线呈现出先减小后增大的两阶段趋势。相应地,平均停留时间和停留时间比率表现出先增加后减小的趋势,由此推断,HL-60细胞在E-选择素上的流动增强型滚动现象是由逆锁键所调控的;②同一剪切力下HL-60细胞的滚动速度随着加药时间的增加呈现出下降趋势。相反地,HL-60细胞的停留比率、平均停留时间时间呈现上升趋势。这进一步说明细胞的停留时间是细胞滚动速度的主要调控因素。

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID: 0000-0003-0581-3310(肖静)

关键词: 干细胞, HL-60细胞, E-选择素, 全反式维甲酸, 增殖, 分化, 平行平板流动腔, 滚动与黏附, 滚动速度, 国家自然科学基金

Abstract:

BACKGROUND: All-trans retinoic acid (ATRA) is an ideal therapy for acute promyelocytic leukemia, which can induce promyelocytes to differentiate to mature granulocytes. However, differentiation syndrome is still a high risk for the patients undergoing ATRA therapy. Occurrence of this complication is closely related with cellular morphology change and expression and function of cellular adhesion molecules, especially selectin and integrin families.
OBJECTIVE: To reveal rolling adhesion behavior and mechanical mechanism of ATRA treated HL-60 cells on the substrate coated with E-selectin under different fluid shear forces.
METHODS: Using the equipment of parallel plate flow chamber, untreated and ATRA treated HL-60 cells were driven to roll on E-selectin-coated substrate. The mean rolling velocity and mean stop time were calculated. Here, the HL-60 cells were incubated in the medium containing 1×10-6 mol/L ATRA for 0, 48, 72, 96 hours. The substrates were captured with 40 μg/L E-selectin overnight and the shear stresses were set to 0.02, 0.04, 0.06 Pa.
RESULTS AND CONCLUSION: The velocity of untreated/treated HL-60 cells decreased firstly and then increased with monotonously increasing shear stress. On the contrary, the mean stop time and factional stop time increased firstly and then decreased. Therefore, we deduced that the flow enhanced rolling adhesion was regulated by the catch bond for the HL-60 cells rolling on E-selectin under flow. On the other side, rolling velocities decreased under the same shear stress even if treated with or without ATRA, and the mean stop time and factional stop time increased inversely, which further illustrate the rolling velocity is mainly regulated by stop time. 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: HL-60 Cells, E-Selectin, Tretinoin, Cell Adhesion, Tissue Engineering

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