中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (32): 4764-4770.doi: 10.3969/j.issn.2095-4344.2016.32.008

• 脐带脐血干细胞 umbilical cord blood stem cells • 上一篇    下一篇

人脐血干细胞分化为鼻黏膜纤毛上皮细胞

董金辉,任秀敏,徐  鸥,王建星   

  1. 河北医科大学第二医院耳鼻喉科,河北省石家庄市  050000
  • 修回日期:2016-06-01 出版日期:2016-08-05 发布日期:2016-08-05
  • 通讯作者: 董金辉,河北医科大学第二医院耳鼻喉科,河北省石家庄市050000
  • 作者简介:董金辉,男,1975年生,内蒙古自治区人,汉族, 2010河北医科大学毕业,硕士,主治医师。
  • 基金资助:

    2014年度河北省医学科学研究重点课题计划(ZL20140002)

Human umbilical cord blood stem cells differentiate into nasal ciliated epithelial cells

Dong Jin-hui, Ren Xiu-min, Xu Ou, Wang Jian-xing   

  1. Department of Otolaryngology, Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei Province, China
  • Revised:2016-06-01 Online:2016-08-05 Published:2016-08-05
  • Contact: Dong Jin-hui, Department of Otolaryngology, Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei Province, China
  • About author:Dong Jin-hui, Master, Attending physician, Department of Otolaryngology, Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei Province, China
  • Supported by:

    the Medical Research Project of Hebei Province of China in 2014, No. ZL20140002

摘要:

文章快速阅读:

文题释义:
脐血干细胞:
其具备自我更新和增殖的能力,并能在特定因素的影响或诱导下,向各种细胞或组织分化。同时,脐血具有淋巴细胞抗原性弱、功能相对不成熟、移植后发生移植物抗宿主病的风险较低等特点,并且来源广,不受伦理和道德的限制,因此是干细胞移植的重要来源之一,具有广泛应用于临床组织工程学的巨大潜能。
鼻黏膜纤毛上皮细胞:其与外界环境想通,属于不稳定细胞,受损后导致鼻黏膜生物功能严重创伤。临床上常采用鼻内窥镜手术进行长期、定时随访观察鼻腔内容物,防止鼻腔黏膜粘连和炎症复发。术后使用黏液促排剂及其他局部生物材料来改善鼻黏膜的修复,但是由于随访时间不易控,时间长达数月也不能完全治愈,不但给患者带来了沉重的经济负担,而且也严重影响了患者的生活质量。

 

摘要
背景:
鼻黏膜纤毛上皮细胞受损后导致鼻黏膜生物功能严重创伤。相对于其他成体干细胞,人脐血干细胞具有更好的诱导分化潜能。
目的:观察人脐血干细胞通过体外培养、诱导分化为鼻黏膜纤毛上皮细胞的可行性。
方法:收集正常健康人脐血,分离人脐血干细胞,通过体外培养,鉴定干细胞表面标记物后进行传代培养;取第3代脐血干细胞,用携带增强型绿色荧光蛋白重组腺相关病毒进行感染,采用气液界面培养法,分别于诱导感染1,2周后对干细胞进行MUC8基因PCR检测。在脐血干细胞培养3周后进行FOXJ1免疫荧光染色。
结果与结论:①培养鉴定结果:原代人脐血干细胞传代至第3代时,细胞形态较均一,折光性良好,可表达干细胞表面标记物;②转染鉴定结果:细胞转染3 h后,可见第3代干细胞呈现出绿色荧光,培养48 h后,流式细胞仪检测细胞阳性率达96.2%,说明干细胞转染效果很好;③RT-PCR检测:人脐血干细胞MUC8 mRNA无表达,而鼻黏膜上皮细胞MUC8 mRNA呈现出强表达,培养1周时 MUC8 mRNA呈现弱表达,培养2周后有一定的增强;④免疫荧光染色:在转染的绿色荧光蛋白背景下可观测到FOXJ1红色荧光呈现阳性表达结果;⑤结果说明:人脐血干细胞在适宜培养条件下可分化为鼻黏膜纤毛上皮细胞。

 

 

关键词: 干细胞, 脐带脐血干细胞, 鼻黏膜上皮细胞, 人脐血干细胞, 气液界面培养法, 分化, 鼻黏膜纤毛上皮细胞, MUC8, FOXJ1, 鼻窦炎

Abstract:

BACKGROUND: Damage to nasal ciliated epithelial cells can lead to a severe injury in nasal biological function. Compared with other adult stem cells, human umbilical cord blood stem cells have better differentiation potential.
OBJECTIVE: To explore the feasibility of human umbilical cord blood stem cells differentiating into nasal ciliated epithelial cells through in vitro culture and induction techniques.
METHODS: Normal and healthy umbilical cord blood samples were collected to isolate human umbilical cord blood stem cells, followed by identification and subculture in vitro. Umbilical cord blood stem cells at passage 3 were infected with recombinant adeno-associated virus carrying enhanced green fluorescent protein and cultured using air liquid interface culture method. Thereafter, PCR assay was employed for detecting MUCS expression in cultured stem cells at 1 and 2 weeks after induction, and immunofluorescent staining for FOXJ1 was performed at 3 weeks.
RESULTS AND CONCLUSION: After subculture, passage 3 umbilical cord blood stem cells that could express stem cell surface markers were visible in a uniform shape and had good refraction. After 3 hours of gene transfection, green fluorescence issued from the passage 3 cells were visible, and the cell positive rate was up to 96.2% until 48 hours, indicating good transfection efficiency. RT-PCR findings showed that MUC8 mRNA had no expression in the umbilical cord blood stem cells, but expressed strongly in the nasal ciliated epithelial cells, whose expression was weak at 1 week of culture and increased at 2 weeks. Additionally, the positive expression of FOXJ1 red fluorescence was observed under the transfection of green fluorescent protein. These results suggest that human umbilical cord blood stem cells could differentiate into nasal epithelial cells under suitable conditions.

 

 

Key words: Stem Cells, Tissue Engineering, inusitis

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