中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (7): 1038-1044.doi: 10.12307/2022.141

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

外用红色诺卡氏菌细胞壁骨架提高脂肪间充质干细胞活性修复糖尿病创面

闻丹丹1,李  强2,沈才齐2,纪  哲1,金培生2   

  1. 1徐州医科大学研究生院,江苏省徐州市  221000;2徐州医科大学附属医院整形外科,江苏省徐州市  221002
  • 收稿日期:2020-09-27 修回日期:2020-09-28 接受日期:2021-05-21 出版日期:2022-03-08 发布日期:2021-10-29
  • 通讯作者: 金培生,博士,主任医师,徐州医科大学附属医院整形外科,江苏省徐州市 221002
  • 作者简介:闻丹丹,女,1986年生,江苏省徐州市人,汉族,2021年徐州医科大学毕业,硕士,主要从事创面愈合的基础研究及临床应用研究。

Nocardia rubra cell wall skeleton for extemal use improves the viability of adipogenic mesenchymal stem cells and promotes diabetes wound repair

Wen Dandan1, Li Qiang2, Shen Caiqi2, Ji Zhe1, Jin Peisheng2   

  1. 1Graduate School of Xuzhou Medical University, Xuzhou 221000, Jiangsu Province, China; 2Department of Plastic Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
  • Received:2020-09-27 Revised:2020-09-28 Accepted:2021-05-21 Online:2022-03-08 Published:2021-10-29
  • Contact: Jin Peisheng, PhD, Chief physician, Department of Plastic Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
  • About author:Wen Dandan, Master, Graduate School of Xuzhou Medical University, Xuzhou 221000, Jiangsu Province, China

摘要:

文题释义:
外用红色诺卡氏菌细胞壁骨架:是一种从红色诺卡菌中提取的细胞壁骨架成分,由红色诺卡菌经发酵、细胞破碎、酶处理、溶媒提取等制备而成,主要成分为诺卡菌酸、阿拉伯半乳聚糖和黏肽,常规用于宫颈糜烂、黏膜溃疡及各种人乳头瘤病毒感染疾病的治疗。
活细胞染色剂CM-Dil:是通过与细胞膜结构的脂质分子结合而标记细胞,有着强而稳定的红色荧光(激发峰553 nm/发射峰570 nm)。CM-DiI 对细胞无毒,且稳定长效,能很好地长期示踪细胞。研究证实,CM-DiI标记后荧光在胞内表达稳定,阳性标记率达98%以上,标记细胞形态良好,能有效观察细胞在体外的诱导分化情况;或将标记的细胞注入体内,可以有效显示移植细胞在活体组织中的迁移及分化。
背景:根据目前临床上外用红色诺卡氏菌细胞壁骨架对宫颈糜烂的治疗应用及其免疫作用,考虑到其对慢性创面治疗的可能性。
目的:探讨外用红色诺卡氏菌细胞壁骨架对脂肪间充质干细胞体外增殖、凋亡的影响,以及对脂肪间充质干细胞体内移植存活率和皮肤愈合的影响。
方法:以质量浓度为10 mg/L外用红色诺卡氏菌细胞壁骨架作用于脂肪间充质干细胞,采用CCK-8法检测细胞活力,EDU试剂盒检测细胞增殖能力;在脂肪间充质干细胞中加入50%蔗糖诱导细胞凋亡,给予外用红色诺卡氏菌细胞壁骨架干预后采用FITC-PI流式细胞凋亡试剂盒、TUNEL凋亡试剂盒检测细胞凋亡情况。第3代脂肪间充质干细胞中加入10 mg/L外用红色诺卡氏菌细胞壁骨架5 mL,共培养48 h,用荧光染料CM-Dil标记后以皮内注射方式注入糖尿病小鼠创缘皮肤,LB983活体成像系统检测细胞存活率,苏木精-伊红染色、Masson染色和免疫荧光染色验证慢性创面第14天愈合情况。
结果与结论:外用红色诺卡氏菌细胞壁骨架可提高脂肪间充质干细胞的活力及增殖能力,并抑制其凋亡;在体内条件下外用红色诺卡氏菌细胞壁骨架可以增加脂肪间充质干细胞的存活率,糖尿病小鼠创面愈合速度更快。

https://orcid.org/0000-0002-2239-0156(金培生) 

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: 红色诺卡氏菌细胞壁骨架, 脂肪间充质干细胞, 细胞活性, 凋亡, 慢性创面, 糖尿病创面

Abstract: BACKGROUND: According to the current clinical application of Nocardia rubra cell wall skeleton to the treatment of cervical erosion and its immune effect, considering the possibility of its treatment of chronic wounds. 
OBJECTIVE: To study the effect of Nocardia rubra cell wall skeleton for extemal use on the proliferation and apoptosis of adipogenic mesenchymal stem cells in vitro, and the impact on the survival rate and skin healing of adipogenic mesenchymal stem cells transplantation in vivo.
METHODS: Adipogenic mesenchymal stem cells were treated with 10 mg/L Nocardia rubra cell wall skeleton for extemal use. CCK-8 and EDU kits were used to detect the viability and proliferation of adipogenic mesenchymal stem cells. Adipogenic mesenchymal stem cells were treated with 50% sucrose to induce apoptosis, and then with Nocardia rubra cell wall skeleton for extemal use. Afterwards, flow cytometry and TUNEL assay were used to detect the apoptosis. Nocardia rubra cell wall skeleton for extemal use (10 mg/L, 5 mL) was added to passage 3 adipogenic mesenchymal stem cells for 48 hours of culture. The pretreated cells labeled with the fluorescent dye CM-Dil were injected intracutaneously into the wound skin of diabetic mice. The cell survival rate was detected by the LB983 in vivo imaging system. Hematoxylin-eosin staining, Masson staining, and immunofluorescence were used to verify the healing of chronic wounds on day 14.
RESULTS AND CONCLUSION: Nocardia rubra cell wall skeleton for extemal use could promote the viability and proliferation of adipogenic mesenchymal stem cells, and inhibit their apoptosis. Nocardia rubra cell wall skeleton for extemal use increased the survival rate of adipogenic mesenchymal stem cells under in vivo conditions. The wound healing rate is faster in diabetic mice.

Key words: Nocardia rubra cell wall skeleton, adipogenic mesenchymal stem cells, cell viability, apoptosis, chronic wound, diabetic wounds

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