Stem cells:外粒子放射疗法治疗人类多能干细胞来源的畸胎瘤

2017-07-11 qinqiyun MedSci原创

人类多能干细胞包括人类胚胎干细胞(hESCs)和人类诱导性PSCs(hiPSCs),因为不限制供体来源对于细胞为基础的疗法具有很大的潜力。但是,残留的未分化的细胞形成畸胎瘤的风险,是这些细胞应用于临床主要的障碍。研究人员发现用外粒子放射疗法(EBRT)是治疗这类畸胎瘤生长的一种具有吸引力的选择。本文中,研究人员提供证据表明,ERBT通过微型CT辐射可有效阻碍移植后28天小型动物活体内hESC来源的

人类多能干细胞包括人类胚胎干细胞(hESCs)和人类诱导性PSCs(hiPSCs),因为不限制供体来源对于细胞为基础的疗法具有很大的潜力。但是,残留的未分化的细胞形成畸胎瘤的风险,是这些细胞应用于临床主要的障碍。

研究人员发现用外粒子放射疗法(EBRT)是治疗这类畸胎瘤生长的一种具有吸引力的选择。本文中,研究人员提供证据表明,ERBT通过微型CT辐射可有效阻碍移植后28天小型动物活体内hESC来源的畸胎瘤的生长。在放射的几天内,来源于注射的未分化的hESCs和hiPSCs的畸胎瘤持续几个月完全生长阻滞。

另外,在连续转移试验中,EBRT可减少畸胎瘤细胞再种植的潜能,经过放射的畸胎瘤需要播种1000倍剂量才可以形成新的畸胎瘤。研究人员还证明放射可以诱导畸胎瘤细胞凋亡、衰老和生长阻滞,与现有的放疗机制类似。

总而言之,这些结果证明EBRT可应用于治疗现有的畸胎瘤,并且强调需要提高干细胞为基础的治疗方案的安全性。

原始出处:

Andrew S.Lee,Chad Tang,et al.Brief Report: External Beam Radiation Therapy for the Treatment of Human Pluripotent Stem Cell-Derived Teratomas.Stem cells.10 July 2017.DOI: 10.1002/stem.2653

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    2017-09-26 维他命
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