中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (25): 3771-3777.doi: 10.3969/j.issn.2095-4344.2016.25.019

• 细胞外基质材料 extracellular matrix materials • 上一篇    下一篇

人表皮干细胞复合裸鼠脱细胞真皮支架制备的人工皮肤

赵跃华1,张永红2,林 凯3   

  1. 1漯河医学高等专科学校第二附属医院皮肤科,河南省漯河市 462300;2郑州大学附属郑州中心医院皮肤科,河南省郑州市 450007;3河南省实验动物中心,河南省郑州市  450000
  • 收稿日期:2016-04-21 出版日期:2016-06-17 发布日期:2016-06-17
  • 作者简介:赵跃华,女,1965年生,河南省漯河市人,汉族,2001年河南中医学院毕业,副主任医师,副教授,主要从事中西医结合治疗各种疑难皮肤性病及皮肤美容研究。
  • 基金资助:

    河南省医学科技攻关计划项目(201402103)

 Human epidermal stem cells combined with acellular dermal scaffold in nude mice for skin transplantation

Zhao Yue-hua1, Zhang Yong-hong2, Lin Kai3   

  1. 1Department of Dermatology, the Second Affiliated Hospital of Luohe Medical College, Luohe 462300, Henan Province, China; 2Department of Dermatology, Affiliated Zhengzhou Central Hospital of Zhengzhou University, Zhengzhou 450007, Henan Province, China; 3Experimental Animal Center of Henan, Zhengzhou 450000, Henan Province, China
  • Received:2016-04-21 Online:2016-06-17 Published:2016-06-17
  • About author:Zhao Yue-hua, Associate chief physician, Associate professor, Department of Dermatology, the Second Affiliated Hospital of Luohe Medical College, Luohe 462300, Henan Province, China
  • Supported by:

    the Medical Science and Technology Research Project in Henan Province, No. 201402103

摘要:

 文章快速阅读:

 

文题释义:
脱细胞真皮:是通过一定的化学和生化等手段,获得仅具有真皮基质(即细胞间质)材料的过程。在处理过程中,选择的原材料可以是异种皮或者同种异体皮,经过一定的处理之后,异种皮或者同种异体皮的细胞膜结构以及细胞内成分均被取出,仅剩余所需的细胞间质。
表皮干细胞:在胎儿时期主要集中于初级表皮嵴,至成人时呈片状分布在表皮基底层。表皮干细胞在组织结构中位置相对稳定,一般是位于毛囊隆突部皮脂腺开口处与竖毛肌毛囊附着处之间的毛囊外根鞘。在没有毛发的部位如手掌、脚掌,表皮干细胞位于与真皮乳头顶部相连的基底层;在有毛发的皮肤,表皮干细胞则位于表皮基部的基底层。其中有1%-10%的基底细胞为干细胞。不同发育阶段的人皮肤表皮干细胞的含量不同。胎儿期表皮基底层增殖细胞均为表皮干细胞和短暂扩增细胞,而少儿表皮基底层中部分细胞为表皮干细胞和暂时扩增细胞,成人表皮干细胞和暂时扩增细胞所占比例则进一步降低。
 

摘要

 

背景:多种原因会导致皮肤大面积缺损的出现,临床可采用组织工程人工皮肤进行移植修复,而构建组织人工皮肤需要种子细胞和支架材料。

 

目的:观察人表皮干细胞复合裸鼠脱细胞真皮构建的组织工程人工皮肤的应用效果。

 

方法:①取幼儿包皮分离培养人表皮干细胞,取裸鼠皮肤制备脱细胞真皮支架,将两者复合构建人工皮肤。②10只SD大鼠随机等分为组织工程皮肤组和脱细胞真皮支架组,均制备皮肤缺损模型,分别采用移植脱细胞真皮支架与人表皮干细胞复合物与单纯脱细胞真皮支架进行修复。

 

结果和结论:①人工皮肤均呈乳白色,质地柔软且富有弹性,柔韧性好,不易断裂,并具有良好的随形性,可加工为不同的形状。②2组大鼠修复后创面均未出现明显渗出。造模后2周,组织工程皮肤组裸鼠移植皮肤均呈现出良好的生长状态,创面逐渐愈合。脱细胞真皮支架组出现瘢痕愈合,且2只动物移植失败。③结果表明,以人表皮干细胞为种子细胞,以裸鼠脱细胞真皮材料为支架,可复合获得组织工程皮肤,并对皮肤缺损动物具有良好的修复效果。

 

 

 

ORCID: 0000-0002-3506-1706(赵跃华) 
 

关键词: 生物材料, 材料相容性, 人表皮干细胞, 种子细胞, 支架材料, 脱细胞真皮支架, 皮肤缺损, 皮肤移植, 动物模型

Abstract:

BACKGROUND: Many factors can lead to a large area of skin defects, and tissue-engineered artificial skill transplantation composed by seeding cells and scaffold materials can be used for skin defect repair.

 

OBJECTIVE: To construct the skin implantation scaffold based on human epidermal stem cells combined with acellular dermal matrix in nude mice.

 

METHODS: Human epidermal stem cells from children’s foreskin were isolated and cultured, and the skin of nude mice was obtained to prepare acellular dermal matrix scaffold. Then, the human epidermal stem cells were cultured on the acellular dermal matrix scaffold to construct artificial skin. Ten Sprague-Dawley rats were equivalently randomly divided into two groups: rats treated by human epidermal stem cells combined with acellular dermal matrix scaffold as combined group, and those treated by simple acellular dermal scaffold as acellular dermal scaffold group after skin defect models were prepared.

 
RESULTS AND CONCLUSION: The artificial skin was milky white, soft and elastic, not easy to break, and has good flexibility, and good plasticity, and could be processed into different shapes. No obvious exudation appeared in the rat wound of two groups after repair. At 2 weeks after modeling, the transplanted skin showed good growth and skin wound healed gradually in the combined group. In contrast, scar healing and two animals with transplant failure occurred in the acellular dermal scaffold group. These results show that human epidermal stem cells combined with acellular dermal materials in nude mice can construct the tissue-engineered skin, which exerts good repair effects for skin defects in animals.

 

 

 

 

 

Key words: Epidermis, Stents, Tissue Engineering

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