Wound Healing and Cell Biology Laboratory, Burns Institute, First Affiliated Hospital/General Hospital of PLA, Trauma Centre of Postgraduate Medical College, Beijing, People's Republic of China.
J Tissue Eng Regen Med. 2012 Aug;6(8):645-54. doi: 10.1002/term.468. Epub 2011 Sep 13.
Mesenchymal stem cells derived from Wharton's jelly of the human umbilical cord (hUC-MSCs) possess various advantageous properties, similar to bone marrow-derived mesenchymal stem cells (BM-MSCs), including self-renewal, extended proliferation potential and multilineage differentiation potential. In this study, we hoped to determine whether hUC-MSCs could be induced to differentiate into sweat gland cell-like cells, that would be potential in sweat glands restoration after injury. In this study, the results of flow cytometry analysis revealed that hUC-MSCs showed the typical antigen profile of MSCs and were positive for CD29, CD44, CD90, CD105 and Oct-4; they were negative for the antigens of CD34, CEA and CK14. Remarkably, hUC-MSCs maintained proper proliferation and differentiation ability. After culture in sweat gland cell-conditioned medium (induction group 1) for 3 weeks, hUC-MSCs possessed sweat gland cell-like morphology and expressed markers of sweat gland cells (CEA, CK14 and CK19) more efficiently than those of induction group 2. In reverse-transcription PCR and western blotting analysis, it was further confirmed that induced hUC-MSCs (group 1) also expressed a higher level of sweat gland developmental genes (EDA and EDAR) than group 2. These results together provided evidence that hUC-MSCs could possess a new emerging potential to differentiate into sweat gland cell-like cells with a higher efficacy under our new induction system. Thus, hUC-MSCs could be considered a new strategy for sweat glands restoration after skin injury as well as improvement of cutaneous regeneration.
人脐带华通氏胶来源的间充质干细胞(hUC-MSCs)具有类似于骨髓间充质干细胞(BM-MSCs)的各种有利特性,包括自我更新、延长增殖潜能和多能分化潜能。在这项研究中,我们希望确定 hUC-MSCs 是否可以被诱导分化为汗腺细胞样细胞,这可能对损伤后汗腺的修复有潜在作用。在这项研究中,流式细胞术分析的结果表明,hUC-MSCs 表现出 MSC 的典型抗原特征,并且 CD29、CD44、CD90、CD105 和 Oct-4 呈阳性;它们对 CD34、CEA 和 CK14 的抗原呈阴性。值得注意的是,hUC-MSCs 保持了适当的增殖和分化能力。在汗腺细胞条件培养基(诱导组 1)中培养 3 周后,hUC-MSCs 具有汗腺细胞样形态,并更有效地表达汗腺细胞标志物(CEA、CK14 和 CK19),比诱导组 2 更有效。在逆转录 PCR 和 Western blot 分析中,进一步证实诱导的 hUC-MSCs(组 1)也表达了更高水平的汗腺发育基因(EDA 和 EDAR),比组 2 更高。这些结果共同提供了证据,表明 hUC-MSCs 可以在我们新的诱导系统下,具有更高的功效分化为汗腺细胞样细胞,具有新的潜在功能。因此,hUC-MSCs 可以被认为是一种新的策略,用于皮肤损伤后汗腺的修复以及皮肤再生的改善。
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