CD106+ placental mesenchymal stem cells (MSC) possess higher capability to promote angiogenesis; however, the precise mechanism remains unclear. Our previous studies revealed that CD106+ MSC express higher epithelial specific ETS transcription factor-3(ESE-3)than CD106- MSC. This project is dedicated to systemically exploring the effects of ESE-3 on angiogenic factors secretion of MSC and its function and mechanism on angiogenesis. First, setting up CD106+ MSC and CD106- MSC cell model by over-expression and knocked down. The influence of ESE-3 on MSC paracrine will be investigated; Secondly, exploring expression and regulation of ESE-3 in CD106+ MSC, and investigating why CD106+ MSC have higher capability to promote angiogenesis; Thirdly, introducing mouse limb ischemia model and investigating the role of ESE-3 on MSC paracrine. On this basis we will explore the therapeutic prospect of ESE-3 in ischemic diseases through overexpression. We hope this project could provide new theraputic strategy for treatment of ischemic diseases.
CD106阳性胎盘间充质干细胞(MSC)具有更强的促血管新生能力,但机制尚不清楚。我们前期的研究结果显示:CD106+MSC高表达上皮特异性ETS转录因子家族成员-3(ESE-3),但ESE-3的功能目前知之甚少。本课题将系统探讨ESE-3对间充质干细胞旁分泌血管新生因子的影响及其作用机制。首先,以胎盘CD106+和CD106-MSC为模型,采用RNA干扰和过表达的技术,研究ESE-3对MSC旁分泌血管新生因子的影响和作用机制;其次,探讨ESE-3在CD106+MSC中的表达调控,研究CD106+MSC具有更强促血管新生能力的机制;最后,利用小鼠下肢缺血模型,研究ESE-3在CD106+MSC促血管新生中所发挥的作用,并在此基础上,探讨过表达ESE-3的MSC在缺血性疾病的治疗中的作用,为缺血性疾病的治疗提供依据。
随着人口老龄化,患外周动脉疾病(Peripheral Arterial Disease,PAD)的总人数一直在上升。异基因来源的间充质干细胞治疗缺血性疾病,显示出了良好的安全和较好的治疗效果,我们研究发现胎盘间充质干细胞(MSC)具有更强的促血管新生能力,但对机制尚不清楚。通过本项目的研究,我们发现:与CD106-MSC相比,CD106+MSC显示出更强的促血管新生能力,而IL-1β能更好的维持MSC持续表达CD106,IL-1β和TNFα可以上调ESE-3的表达。CD106+MSC能分泌更高的PGE2,干扰ESE-3后,MSC分泌PGE2的能力明显下降。我们制备了PGE2水凝胶,发现PGE2水凝胶能明显改进损伤组织血管新生促进组织修复。另外,我们研究发现干扰CD106+MSC的ESE-3表达后,能增强CD106+MSC在去血清培养条件下的存活能力。通过研究ESE-3在MSC中的作用,为缺血性疾病的治疗提供依据。
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数据更新时间:2023-05-31
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