中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (1): 60-65.doi: 10.3969/j.issn.2095-4344.2017.01.011

• 干细胞移植 stem cell transplantation • 上一篇    下一篇

转化生长因子β1基因沉默脂肪干细胞移植治疗血小板减少性紫癜

尹婉宜,沈  扬,刘清池,贾晓辉,张丽红   

  1. 河北医科大学第一医院血液科,河北省石家庄市  050031
  • 出版日期:2017-01-08 发布日期:2017-03-15
  • 通讯作者: 尹婉宜,河北医科大学第一医院血液科,河北省石家庄市 050031
  • 作者简介:尹婉宜,女,1979年生,河北省石家庄市人,汉族, 2006年河北医科大学毕业,硕士,主治医师。
  • 基金资助:

    河北省卫生厅医学科学研究课题(20130276)

Transforming growth factor beta1 gene silenced adipose-derived stem cell transplantation reduces thrombocytopenic purpura

Yin Wan-yi, Shen Yang, Liu Qing-chi, Jia Xiao-hui, Zhang Li-hong   

  1. Department of Hematology, First Hospital of Hebei Medical University, Shijiazhuang 050031, Hebei Province, China
  • Online:2017-01-08 Published:2017-03-15
  • Contact: Yin Wan-yi, Department of Hematology, First Hospital of Hebei Medical University, Shijiazhuang 050031, Hebei Province, China
  • About author:Yin Wan-yi, Master, Attending physician, Department of Hematology, First Hospital of Hebei Medical University, Shijiazhuang 050031, Hebei Province, China
  • Supported by:

    the Medical Research Project of Hebei Health Department, No. 20130276

摘要:

文章快速阅读:

文题释义:
血小板减少性紫癜:
是血液科常见的疾病,通常采用激素、美罗华、切脾或者中药等进行治疗。对于难治复发的血小板减少性紫癜的治疗目前仍无有效方法。文章选择临床上这一常见病为研究内容,以实验室干预方式进行探讨和研究,为希望能临床上该病的治疗提供新的方法。
基因沉默:自在转基因植物中发现转基因沉默现象以来,很多学者对该现象进行了广泛的研究,认为其作用机制有3种:位置依赖性基因沉默、转录水平基因沉默、转录后水平基因沉默。目前主要集中于转录后水平基因沉默的研究,通过研究发现它具有广泛性、可传导性及特异性的特点,并对其机制提出了一些假说。

 

摘要
背景:
有研究表明干细胞治疗为血小板减少性紫癜的治疗带来了新的希望,但对于此病的完美的治疗仍存在困难。
目的:探讨转化生长因子β1基因沉默脂肪干细胞移植对血小板减少紫癜小鼠疗效的影响。
方法:将构建的转化生长因子β1-siRNA质粒转染至小鼠脂肪干细胞中,使其低表达转化生长因子β1。用豚鼠抗小鼠血小板血清(GP-APS)腹腔注射构建血小板减少性紫癜模型小鼠,建模后随机分为4组,血小板减少性紫癜模型组尾静脉注射生理盐水20 μL,脂肪干细胞组和转化生长因子β1沉默组分别尾静脉注射2×106 L-1的CM-Dil标记的脂肪干细胞,转化生长因子β1沉默脂肪干细胞悬液20 μL,泼尼松组按泼尼松5 mg/kg灌胃,连续治疗14 d。
结果与结论:①免疫荧光染色及EILSA检测:与其他3组比较,转化生长因子β1沉默组CM-Dil标记的阳性细胞数目,血小板计数,产板型巨核细胞比例均升高,骨髓巨核细胞总数、PAIgG及转化生长因子β1水平下降(P < 0.05);②结果说明,转化生长因子β1基因沉默脂肪干细胞移植能有效降低血小板减少性紫癜小鼠转化生长因子β1及PAIgG水平,促进骨髓巨核细胞分化成熟,从而有效提高血小板计数,对治疗血小板减少性紫癜有效果较好。

 

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:
0000-0002-3236-5704(尹婉宜)

关键词: 干细胞, 移植, 脂肪干细胞, 转化生长因子β1, 基因, 沉默, 脂肪干细胞, 血小板, 减少, 紫癜, 小鼠, 疗效

Abstract:

BACKGROUND: Some studies have shown that stem cell therapy offers new promise for the treatment of thrombocytopenic purpura, but there are still difficulties in the perfect treatment for thrombocytopenic purpura.
OBJECTIVE: To investigate the effect of transplantation of transforming growth factor beta1 (TGF-β1) gene silenced mouse adipose-derived stem cells (ADSCs) in mice with thrombocytopenic purpura.
METHODS: The mouse ADSCs were cultured in vitro and transfected by the siRNA expression plasmids containing TGF-β1 (TGF-β1-siRNA). Mouse model of thrombocytopenic purpura were made by guinea pig anti-mouse platelet serum intraperitoneally injected. Then, model mice were randomly assigned into model, ADSCs, TGF-β1 silenced ADSCs, or prednisone group, followed by intravenous injection of 20 μL normal saline, 2×106/L CM-Dil-labeled ADSCs, 20 μL TGF-β1 silenced ADSCs suspension via the tail vein, or intragastrical administration of 5 mg/kg prednisone, respectively. The mice in each group were sacrificed after 14 days of treatment.
RESULTS AND CONCLUSION: Compared with the other three groups, the TGF-β1 silenced ADSCs group showed a significant increase in the number of CM-Dil positive cells, blood platelet count, and proportion of thromocytogenic megakaryocytes, while a marked decrease in the total number of megakaryocytes, PAIgG values and TGF-β1 level (P < 0.05). To conclude, TGF-β1 gene silenced ADSCs transplantation can effectively reduce the TGF-β1 and PAIgG values in ITP mice, and promote the differentiation and maturation of megakaryocytes in the bone marrow, which can effectively improve the number of platelets, playing a role in the treatment of ITP.

 

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: Stem Cells, Tissue Engineering, Transforming Growth Factor beta, Blood Platelets

中图分类号: