Nat Biotechnol:新技术助推血管再造

2014-10-17 佚名 生物谷

近日,一项发表在国际杂志Nature Biotechnology上的研究论文中,来自印第安纳大学医学院的科学家开发了一种新型技术可以启动机体产生血管组织,为开发治疗因截肢及个体失明而引发的相关疾病的新型疗法带来了帮助。 文章中,研究者人员表示,这种新型技术为开发治疗外周动脉疾病的新型疗法提供了一定思路,外周动脉疾病因血流不畅引发的腿部疼痛疾病,其会引发皮肤坏疽,严重情况下需要对患者进行截肢

近日,一项发表在国际杂志Nature Biotechnology上的研究论文中,来自印第安纳大学医学院的科学家开发了一种新型技术可以启动机体产生血管组织,为开发治疗因截肢及个体失明而引发的相关疾病的新型疗法带来了帮助。

文章中,研究者人员表示,这种新型技术为开发治疗外周动脉疾病的新型疗法提供了一定思路,外周动脉疾病因血流不畅引发的腿部疼痛疾病,其会引发皮肤坏疽,严重情况下需要对患者进行截肢手术。患外周动脉疾病的患者往往需要给予一定药物来改善其机体血流状况,但是如果血管组织功能降低或者数量减少,那么对患者的效果将大打折扣。

如果将“年轻旺盛”的内皮聚集形成细胞注射入患者受损的血管组织中,那么其就会开启新血管组织的生成过程,然而收集内皮聚集形成细胞并不容易,这些细胞在成年个体机体中很难被找到,尤其是在那些患有外周动脉疾病的患者机体中,然而内皮聚集形成细胞在脐带血中却大量存在。

这项研究中,研究者利用患者特异性诱导的多能干细胞开发了一种新型潜在的疗法,这种新型疗法可以促进诱导多能干细胞快速发育成熟为内皮聚集形成细胞,这些实验室产生的内皮聚集形成细胞就可以被注射入小鼠机体中,在小鼠机体中就会增殖形成人类的血管组织,并且恢复小鼠视网膜和四肢损伤组织的血管流动性。

研究者Yoder教授表示,我们在实验室条件下可以产生脐带血样的内皮聚集形成细胞,这些细胞可以在三个月内快速增殖产生1亿个新的单一活性细胞。本文研究利用诱导多能性干细胞为基础,下一步研究人员将进行人体试验;另外对于外周动脉疾病来讲,研究者们可以评估这些衍生细胞的潜在用途来帮助治疗那些因血流量问题而引发的眼部和肺部等疾病。

原始出处:

Prasain N1, Lee MR2, Vemula S1, Meador JL1, Yoshimoto M1, Ferkowicz MJ1, Fett A1, Gupta M1, Rapp BM3, Saadatzadeh MR3, Ginsberg M4, Elemento O5, Lee Y6, Voytik-Harbin SL7, Chung HM8, Hong KS9, Reid E10, O'Neill CL10, Medina RJ10, Stitt AW10, Murphy MP3, Rafii S4, Broxmeyer HE2, Yoder MC1.Differentiation of human pluripotent stem cells to cells similar to cord-blood endothelial colony-forming cells.Nat Biotechnol. 2014 Oct 12. doi: 10.1038/nbt.3048. [Epub ahead of print]

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    2015-06-18 sunylz
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    2014-11-10 shock_melon
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    2015-05-17 liye789132251
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    2014-10-22 cathymary