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Transplantation of human autologous synovial mesenchymal stem cells with trisomy 7 into the knee joint and 5 years of follow-up
STEM CELLS Translational Medicine ( IF 5.4 ) Pub Date : 2021-08-03 , DOI: 10.1002/sctm.20-0491
Mitsuru Mizuno 1 , Kentaro Endo 1 , Hisako Katano 1 , Naoki Amano 2 , Masaki Nomura 2 , Yoshinori Hasegawa 3 , Nobutake Ozeki 1 , Hideyuki Koga 4 , Naoko Takasu 2 , Osamu Ohara 3 , Tomohiro Morio 5 , Ichiro Sekiya 1
Affiliation  

Mesenchymal stem cells (MSCs) can show trisomy 7; however, the safety of these cells has not been fully investigated. The purposes of this study were to determine the ratio of patients whose synovial MSCs were transplanted clinically, to intensively investigate MSCs with trisomy 7 from a safety perspective, and to follow up the patients for 5 years after transplantation. Synovial MSCs at passage 0 were transplanted into a knee for degenerative meniscus tears in 10 patients, and the patients were checked at 5 years. The synovial MSCs were evaluated at passages 0 to 15 by G-bands and digital karyotyping, and trisomy 7 was found in 3 of 10 patients. In those three patients, 5% to 10% of the synovial MSCs showed trisomy 7. The mRNA expressions of representative oncogenes and genes on chromosome 7 did not differ between MSCs with and without trisomy 7. Whole-genome sequencing and DNA methylation analysis showed similar results for MSCs with and without trisomy 7. Transplantation of human synovial MSCs with trisomy 7 into eight mouse knees did not result in tumor formation under the skin or in the knees after 8 weeks in any mouse, whereas transplanted HT1080 cells formed tumors. In vitro chondrogenic potentials were similar between MSCs with and without trisomy 7. Five-year follow-ups revealed no serious adverse events in all 10 human patients, including 3 who had received MSCs with trisomy 7. Overall, our findings indicated that synovial MSCs with trisomy 7 were comparable with MSCs without trisomy 7 from a safety perspective.

中文翻译:

人自体7三体滑膜间充质干细胞移植入膝关节并随访5年

间充质干细胞 (MSCs) 可显示 7 三体;然而,这些细胞的安全性尚未得到充分研究。本研究旨在确定滑膜间充质干细胞临床移植患者的比例,从安全性角度深入研究7三体间充质干细胞,并在移植后随访患者5年。10例退行性半月板撕裂将第0代滑膜间充质干细胞移植到膝关节,5年复查。通过 G 带和数字核型分析在第 0 至 15 代评估滑膜 MSC,在 10 名患者中的 3 名中发现了 7 三体。在这三名患者中,5% 至 10% 的滑膜 MSCs 显示出 7 三体性。7 号染色体上代表性癌基因和基因的 mRNA 表达在有和没有 7 三体性的 MSCs 之间没有差异。全基因组测序和 DNA 甲基化分析显示有和没有 7 三体的 MSC 的相似结果。将具有 7 三体的人类滑膜 MSC 移植到 8 只小鼠膝盖中不会导致任何小鼠在 8 周后在皮肤下或膝盖中形成肿瘤,而移植的HT1080细胞形成肿瘤。具有和不具有 7 三体性的 MSCs 的体外软骨形成潜力相似。五年随访显示,所有 10 名人类患者均未出现严重不良事件,其中 3 名接受了 7 三体性 MSCs。总体而言,我们的研究结果表明滑膜 MSCs 具有从安全角度来看,7 三体与没有 7 三体的 MSC 相当。将具有 7 三体的人类滑膜 MSCs 移植到 8 只小鼠膝盖中 8 周后,在任何小鼠的皮下或膝盖中都没有形成肿瘤,而移植的 HT1080 细胞则形成了肿瘤。具有和不具有 7 三体性的 MSCs 的体外软骨形成潜力相似。五年随访显示,所有 10 名人类患者均未出现严重不良事件,其中 3 名接受了 7 三体性 MSCs。总体而言,我们的研究结果表明滑膜 MSCs 具有从安全角度来看,7 三体与没有 7 三体的 MSC 相当。将具有 7 三体的人类滑膜 MSCs 移植到 8 只小鼠膝盖中 8 周后,在任何小鼠的皮下或膝盖中都没有形成肿瘤,而移植的 HT1080 细胞则形成了肿瘤。具有和不具有 7 三体性的 MSCs 的体外软骨形成潜力相似。五年随访显示,所有 10 名人类患者均未出现严重不良事件,其中 3 名接受了 7 三体性 MSCs。总体而言,我们的研究结果表明滑膜 MSCs 具有从安全角度来看,7 三体与没有 7 三体的 MSC 相当。
更新日期:2021-08-03
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