Nat Commun:利用3D打印技术对受损海绵体进行功能重建

2020-06-18 AlexYang MedSci原创

海绵体损伤能够导致阴茎勃起功能障碍,并且治疗起来非常困难。

海绵体损伤能够导致阴茎勃起功能障碍,并且治疗起来非常困难。

最近,有研究人员利用肝素涂层的3D打印水凝胶支架,植入缺氧诱导因子-1α(HIF-1α)变异的肌肉源性干细胞(MDSCs)开发了生物工程血管化体。不考虑缺氧或者常氧情况下,HIF-1α变异的MDSCs能够显著的抑制MDSCs分泌各种血管生成因子。研究人员将生物可降解支架以及MDSCs植入海绵体缺陷的兔子模型中发现具有良好的组织相容性,没有免疫排斥情况,支持了血管化组织的生长,并促进新生血管来修复缺陷。研究人员对对修复后的海绵体组织的形态、腔内压力、弹性和收缩率进行评价,证明生物工程体支架能成功修复缺损,恢复阴茎勃起和射精功能。功能的恢复使得雄性兔子获得了生殖能力。

最后,研究人员指出,他们的工作阐释了携带血管生成细胞的3D打印水凝胶支架对阴茎重建进而恢复雄性生殖能力具有很大的应用前景。

原始出处:

Geng An, Feixiang Guo, Xuemin Liu et al. Functional reconstruction of injured corpus cavernosa using 3D-printed hydrogel scaffolds seeded with HIF-1α-expressing stem cells. Nat Commun. 01 June 2020

 

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