中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (31): 4988-4994.doi: 10.12307/2021.141

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

黄腐酚对内皮祖细胞增殖、迁移、成管及凋亡的影响及机制

谭小武1,俞晓凡1,姜慧娇1,刑稚坤1,赵雪源1,高风亦1,吴向未1,陈雪玲2   

  1. 1石河子大学医学院第一附属医院普外科,新疆维吾尔自治区石河子市  832008;2石河子大学医学院免疫教研室,新疆维吾尔自治区石河子市  832002
  • 收稿日期:2020-08-22 修回日期:2020-08-26 接受日期:2020-09-26 出版日期:2021-11-08 发布日期:2021-04-25
  • 通讯作者: 吴向未,博士,教授,主任医师,石河子大学医学院第一附属医院普外科,新疆维吾尔自治区石河子市 832008
  • 作者简介:谭小武,男,1985年生,湖南省隆回县人,汉族,硕士,主要从事普通外科疾病基础及干细胞转化医学相关研究。
  • 基金资助:
    国家自然科学基金项目(81760570),项目负责人:吴向未;国家自然科学基金项目(81760371),项目负责人:陈雪玲;兵团中青年科技创新领军人才计划项目(2018CB017),项目负责人:吴向未;兵团重点领域科技公关项目(2019AB031),项目负责人:陈雪玲

Effect of xanthohumol on proliferation, migration, tube formation and apoptosis of endothelial progenitor cells and its mechanism

Tan Xiaowu1, Yu Xiaofan1, Jiang Huijiao1, Xing Zhikun1, Zhao Xueyuan1, Gao Fengyi1, Wu Xiangwei1, Chen Xueling2   

  1. 1Department of General Surgery, First Affiliated Hospital of Medical College of Shihezi University, Shihezi 832008, Xinjiang Uygur Autonomous Region, China; 2Department of Immunology, Medical College of Shihezi University, Shihezi 832002, Xinjiang Uygur Autonomous Region, China
  • Received:2020-08-22 Revised:2020-08-26 Accepted:2020-09-26 Online:2021-11-08 Published:2021-04-25
  • Contact: Wu Xiangwei, MD, Professor, Chief physician, Department of General Surgery, First Affiliated Hospital of Medical College of Shihezi University, Shihezi 832008, Xinjiang Uygur Autonomous Region, China
  • About author:Tan Xiaowu, Master, Department of General Surgery, First Affiliated Hospital of Medical College of Shihezi University, Shihezi 832008, Xinjiang Uygur Autonomous Region, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81760570 (to WXW); the National Natural Science Foundation of China, No. 81760371 (to CXL); the Corps Young and Middle-Aged Science and Technology Innovation Leading Talent Program, No. 2018CB017 (to WXW); the Science and Technology Public Relations Project in Key Fields of the Corps, No. 2019AB031 (to CXL)

摘要:

文题释义

骨髓内皮祖细胞:是指来源于骨髓且出生后机体中存在能特异性归巢至血管新生组织并分化成内皮细胞的一群干细胞,表面标物 CD133、CD34及血管内皮生长因子受体2 阳性表达,能够摄取Dil标记的乙酰化低密度脂蛋白,并能够通过体外培养形成管腔样结构,它不仅参与胚胎时期血管生成,还与损伤的血管内皮愈合和血管新生密切相关。
NF-κB:最早由David Baltimore发现,该蛋白家族可以选择性结合在B细胞κ-轻链增强子上调控许多基因的表达。在几乎所有的动物细胞中都能发现NF-κB,它们参与细胞对外界刺激的响应,如细胞因子、辐射、重金属、病毒等,与多种肿瘤的细胞增殖、侵袭、血管生成和转移有关。
背景:肿瘤的发展依赖于血管新生,以输送氧气和微量营养素,并促使其转移,而肿瘤中的新生血管被认为是由原有血管系统中内皮细胞迁移和增殖形成新的毛细血管。越来越多的证据表明,骨髓源性内皮祖细胞有助于新血管形成,并已成为抗肿瘤治疗的重要靶点。在之前的研究中,未有黄腐酚对骨髓来源内皮祖细胞作用的相关报道。
目的:探讨黄腐酚对骨髓源性内皮祖细胞增殖、迁移、成管以及凋亡的影响,并初步探讨其作用机制。
方法:第3代小鼠骨髓内皮祖细胞分为4组:5,10,20 μmol/L黄腐酚组,以等量二甲基亚砜溶解液为对照组。干预24,48 h,通过CCK-8法测定黄腐酚对小鼠骨髓内皮祖细胞增殖的影响;干预24 h,划痕实验、Transwell实验检测黄腐酚对小鼠骨髓内皮祖细胞迁移的影响;干预6 h,成管实验检测黄腐酚对小鼠骨髓内皮祖细胞管腔形成的影响;干预48 h,流式细胞术、TUNEL凋亡染色法检测黄腐酚对小鼠骨髓内皮祖细胞凋亡的影响;干预48 h,Western blot法检测黄腐酚对小鼠骨髓内皮祖细胞中血管内皮生长因子、血管内皮生长因子受体2、P65、p-P65蛋白表达的影响。
结果与结论:①黄腐酚干预后,骨髓内皮祖细胞在24,48 h生长半数抑制浓度(IC50)分别为(22.19±0.98),(11.51±1.25) μmol/L,差异有显著性意义(P < 0.05),表明黄腐酚可明显抑制骨髓内皮祖细胞的增殖,且具有一定的剂量效应关系(P < 0.05);②与对照组相比,随着黄腐酚浓度的增大,划痕越明显(P < 0.05),迁移细胞数逐渐减少(P < 0.05);③对照组有大量小管样结构形成,而5,10 μmol/L黄腐酚组小管样结构明显减少,20 μmol/L黄腐酚组基本无小管样结构形成,与对照组相比,差异有显著性意义(P < 0.05);④细胞凋亡率随着黄腐酚浓度升高而上升,具有浓度依赖性,且黄腐酚各组凋亡率均高于对照组(P < 0.05);⑤与对照组相比,随着黄腐酚浓度的增大,p-P65、血管内皮生长因子表达下降,而血管内皮生长因子受体2呈反馈性升高,具有浓度依赖性(P < 0.05);⑤结果表明,黄腐酚可抑制骨髓源性内皮祖细胞的增殖、迁移、成管并同时促进其凋亡,其机制可能是通过抑制NF-κB/血管内皮生长因子信号通路,表明黄腐酚具有抗肿瘤血管生成的潜能。

https://orcid.org/0000-0002-5719-3822(谭小武) ;https://orcid.org/0000-0002-3897-6629(吴向未) 

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

关键词: 骨髓, 内皮祖细胞, 黄腐酚, 血管内皮前体细胞, 血管生成, NF-κB, 信号通路

Abstract: BACKGROUND: The development of tumor depends on angiogenesis to transport oxygen and micronutrients, and promote its metastasis. The neovessels in tumor is considered to be the new capillaries formed by the migration and proliferation of endothelial cells in the original vascular system. More and more evidence shows that bone marrow-derived endothelial progenitor cells contribute to neovascularization and have become an important target for anti-tumor therapy. In previous studies, there was no report about the effect of xanthohumol on bone marrow-derived endothelial progenitor cells.
OBJECTIVE: To study the effects of xanthohumol on the proliferation, migration, tube formation and apoptosis of bone marrow-derived endothelial progenitor cells, and to preliminarily explore its mechanism of action. 
METHODS:  The third passage of bone marrow-derived endothelial progenitor cells were divided into four groups: 5, 10, 20 μmol/L xanthohumol group and the same amount of dimethyl sulfoxide solution as the control group. After intervention for 24 and 48 hours, effect of xanthohumol on the proliferation of bone marrow-derived endothelial progenitor cells was measured by the CCK-8 method. After intervention for 24 hours, the scratch test and the Transwell test were used to detect the effect of xanthohumol on the migration of mouse bone marrow-derived endothelial progenitor cells. After intervention for 6 hours, the tube test was used to detect the effect of xanthohumol on the lumen formation of mouse bone marrow-derived endothelial progenitor cells. After intervention for 48 hours, flow cytometry and TUNEL assay were applied to detect the effect of xanthohumol on the apoptosis of mouse bone marrow-derived endothelial progenitor cells. After intervention for 48 hours, western blot assay was employed to detect the effect of xanthohumol on vascular endothelial growth factor, vascular endothelial growth factor receptor 2, P65 and p-P65 protein.   
RESULTS AND CONCLUSION: (1) After the intervention of xanthohumol, the half maximal inhibitory concentration (IC50) of bone marrow-derived endothelial progenitor cells at 24 and 48 hours were (22.19±0.98) and (11.51±1.25) μmol/L, respectively. The comparison between them was statistically significant (P < 0.05), indicating that xanthohumol could significantly inhibit the proliferation of bone marrow-derived endothelial progenitor cells in a certain dose-effect relationship (P < 0.05). (2) Compared with the control group, as the concentration of xanthohumol increases, the scratches were more obvious (P < 0.05), and the number of migrating cells decreased gradually (P < 0.05). (3) A large number of tubule-like structures were formed in the control group, while the tubule-like structures were significantly reduced in the 5 and 10 μmol/L xanthohumol groups, and no tubule-like structures were formed in the 20 μmol/L xanthohumol group, with significant difference compared with the control group (P < 0.05). (4) The apoptosis rate was significantly increased after xanthohumol treatment in a concentration-dependent manner, and the apoptosis rate in each xanthohumol group was significantly higher than that in the control group (P < 0.05). (5) Compared with the control group, with the increase of xanthohumol concentration, the expression of p-P65 and vascular endothelial growth factor decreased, while vascular endothelial growth factor receptor 2 increased in a concentration-dependent manner (P < 0.05). (6) These results indicate that xanthohumol can inhibit the proliferation, migration, tube formation and apoptosis of bone marrow-derived endothelial progenitor cells. The mechanism may be through the inhibition of NF-κB/vascular endothelial growth factor signaling pathway, indicating that xanthohumol has the potential of anti-tumor angiogenesis.

Key words: bone marrow, endothelial progenitor cells, xanthohumol, vascular endothelial progenitor cells, angiogenesis, NF-κB, signaling pathway

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