Adipose tissue-derived mesenchymal stem cells (AdMSCs) represent an attractive and ethical cell source for stem cell therapy. With the recent demonstration of MSC homing properties, intravenous applications of MSCs to cell-damaged diseases have increased. In the present study, the toxicity and tumorigenicity of human AdMSCs (hAdMSCs) were investigated for clinical application. Culture-expanded hAdMSCs showed the typical appearance, immunophenotype, and differentiation capacity of MSCs, and were genetically stable at least 12 passages in culture. Cells suspended in physiological saline maintained their MSC properties in a cold storage condition for at least 3 days. To test the toxicity of hAdMSCs, different doses of hAdMSCs were injected intravenously into immunodeficient mice, and the mice were observed for 13 weeks. Even at the highest cell dose (2.5×10(8) cells/kg body weight), the SCID mice were viable and had no side effects. A tumorigenicity test was performed in Balb/c-nu nude mice for 26 weeks. Even at the highest cell dose (2×10(8) MSCs/kg), no evidence of tumor development was found. In a human clinical trial, 8 male patients who had suffered a spinal cord injury >12 months previous were intravenously administered autologous hAdMSCs (4×10(8) cells) one time. None of the patients developed any serious adverse events related to hAdMSC transplantation during the 3-month follow-up. In conclusion, the systemic transplantation of hAdMSCs appears to be safe and does not induce tumor development
Keywords : Adipose Tissue,Adult,adverse effects,Animals,Antigens,Surface,Carcinogenicity Tests,Cell Differentiation,cytology,Female,Humans,Infusions,Intravenous,injuries,Karyotype,Male,Mesenchymal Stem Cell Transplantation,Mesenchymal Stem Cells,metabolism,methods,Mice,Mice,Inbred BALB C,Mice,Nude,Mice,Scid,Middle Aged,Neoplasms,Patients,physiology,Republic of Korea,Safety,Spinal Cord,Spinal Cord Injuries,Stem Cells,therapy,Time,toxicity,transplantation,, Intravenous,Infusion,Human, best deep tissue massage london
Date of Publication : 2011 Aug
Authors : Ra JC;Shin IS;Kim SH;Kang SK;Kang BC;Lee HY;Kim YJ;Jo JY;Yoon EJ;Choi HJ;Kwon E;
Organisation : Stem Cell Research Center, RNL Bio Co, Ltd, Seoul, Republic of Korea. jcra@rnl.co.kr
Journal of Publication : Stem Cells Dev
Pubmed Link : https://www.ncbi.nlm.nih.gov/pubmed/21303266
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