中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (7): 991-995.doi: 10.3969/j.issn.2095-4344.2161

• 胚胎干细胞 embryonic stem cells • 上一篇    下一篇

胎盘间充质干细胞预处理预防小鼠毛细支气管炎

史洋洋,秦英飞,吴福玲,何  潇,张雪静   

  1. 滨州医学院附属医院儿科,山东省滨州市   256600
  • 收稿日期:2020-04-26 修回日期:2020-04-28 接受日期:2020-05-30 出版日期:2021-03-08 发布日期:2020-12-08
  • 通讯作者: 吴福玲,主任医师,滨州医学院附属医院儿科,山东省滨州市 256600
  • 作者简介:史洋洋,女,1992年生,山东省滨州市人,在读硕士,医师,主要从事婴幼儿毛细支气管炎方面的研究。
  • 基金资助:
    山东省自然科学基金(ZR2014HL001);山东省医药卫生科技发展项目(2013WS0312);山东省滨州市软科学研究计划(2016BRK19)

Pretreatment of placental mesenchymal stem cells to prevent bronchiolitis in mice

Shi Yangyang, Qin Yingfei, Wu Fuling, He Xiao, Zhang Xuejing   

  1. Department of Pediatrics, Affiliated Hospital of Binzhou Medical University, Binzhou 256600, Shandong Province, China
  • Received:2020-04-26 Revised:2020-04-28 Accepted:2020-05-30 Online:2021-03-08 Published:2020-12-08
  • Contact: Wu Fuling, Chief physician, Department of Pediatrics, Affiliated Hospital of Binzhou Medical University, Binzhou 256600, Shandong Province, China
  • About author:Shi Yangyang, Master candidate, Physician, Department of Pediatrics, Affiliated Hospital of Binzhou Medical University, Binzhou 256600, Shandong Province, China
  • Supported by:
    the Natural Science Foundation of Shandong Province, No. ZR2014HL001; the Shandong Medical and Health Science and Technology Development Project, No. 2013WS0312; the Soft Science Research Plan of Binzhou City of Shandong Province, No. 2016BRK19

摘要:

文题释义:
毛细支气管炎:是2岁以内婴幼儿特别是6个月以内婴儿易患的下呼吸道感染性疾病, 临床表现以呼吸急促、喘憋貌、双肺哮鸣音为主,严重者可导致重症肺炎。 
间充质干细胞:属于干细胞中的成体干细胞,具有高度自我增殖和多向分化潜能,其应用于肺部疾病研究的优势包括低免疫原性、来源丰富、具有免疫调节作用等。

背景:婴幼儿毛细支气管炎的反复发作是其住院的主要原因之一,而其反复发作与哮喘的形成密切相关。间充质干细胞近年来被广泛应用于相关疾病的研究。
目的:探讨人胎盘间充质干细胞对呼吸道合胞病毒致小鼠毛细支气管炎的预防作用。
方法:将40只Balb/c小鼠随机均分为间充质干细胞预处理组、生理盐水预处理组、模型组、正常组,每组10只。间充质干细胞预处理组小鼠预先尾静脉注射人胎盘间充质干细胞悬液1 mL(含细胞1×106个),生理盐水预处理组小鼠尾静脉注射等量生理盐水,模型组、正常组小鼠不做任何处理,各组小鼠常规饲养4周后除正常组外均用呼吸道合胞病毒滴鼻法建立毛细支气管炎模型,1次/d,连续滴2 d,末次滴鼻24 h观察各组小鼠咳喘、口周及四肢末梢发绀情况及肺组织病理改变,检测外周血中白细胞介素4水平及肺组织中GATA3蛋白的表达。
结果与结论:①间充质干细胞预处理组较模型组症状明显减轻,肺组织炎症减轻;②间充质干细胞预处理组血清白细胞介素4水平及肺组织GATA3表达量明显低于模型组,差异有显著性意义(P < 0.01);③生理盐水预处理组较模型组白细胞介素4水平、GATA3表达量无明显变化(P > 0.05);④结果表明,人胎盘间充质干细胞预处理可显著降低短期内因呼吸道合胞病毒感染致毛细支气管炎小鼠外周血中白细胞介素4水平和肺组织中GATA3的表达,并降低毛细支气管炎炎症程度。
https://orcid.org/0000-0002-3871-5496(史洋洋) 

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: 干细胞, 胎盘间充质干细胞, 毛细支气管炎, 呼吸道合胞病毒, 炎症, 小鼠, 实验

Abstract:

BACKGROUND: The recurrent attack of infantile bronchiolitis is one of the main causes of hospitalization, and its recurrent attack is closely related to the formation of asthma. In recent years, mesenchymal stem cells have been widely used in disease research.

OBJECTIVE: To investigate the preventive effect of human placental mesenchymal stem cells on bronchiolitis in mice induced by respiratory syncytial virus.
METHODS:  Forty Balb/c mice were randomly divided into mesenchymal stem cell pretreatment group, saline pretreatment group, model group, and normal group, with 10 in each group. The mice in the mesenchymal stem cell pretreatment group were pre-injected with 1 mL human placenta mesenchymal stem cells (containing 1 × 106 cells) in the tail vein. The mice in the saline pretreatment group were injected with the same amount of normal saline in the tail vein. The mice in the model group and the normal group were not treated. After 4 weeks of routine feeding, every week except the normal group, the model of bronchiolitis was established by nose drops, once a day, for 2 consecutive days. At 24 hours after the last nasal drip, cough and asthma, cyanosis around mouth and extremities and pathological changes of lung tissue were observed; interleukin-4 level in peripheral blood and GATA3 protein expression in lung tissue were detected.  
RESULTS AND CONCLUSION:  (1) Compared with the model group, the symptoms and inflammation of lung tissue were significantly reduced in the mesenchymal stem cell pretreatment group. (2) Interleukin-4 level in peripheral blood and GATA3 protein expression in lung tissue were significantly lower in the mesenchymal stem cell pretreatment group than those in the model group (P < 0.01). (3) Interleukin-4 level in peripheral blood and GATA3 protein expression in lung tissue did not significantly change in the saline pretreatment group compared with the model group (P > 0.05). (4) Results suggest that pretreatment of placental mesenchymal stem cells can significantly reduce the content of inflammatory factors interleukin-4 and GATA3 in the peripheral blood of mice with bronchiolitis caused by respiratory syncytial virus infection in the short term, and reduce the degree of inflammation of bronchiolitis.

Key words: stem cells, placental mesenchymal stem cells, bronchiolitis, respiratory syncytial virus, inflammation, mice, experiment

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