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논문 기본 정보

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학술저널
저자정보
Hyung Jun Choi (서울대학교) Euna Kwon (서울대학교) Jeong-Hee Sohn (서울대학교) Jeong-Hwan Che (서울대학교) Kook Hyun Lee (서울대학교) Jong Wan Kim (에스바이오메딕스) Jaydo Choi (에스바이오메딕스) Byeong-Cheol Kang (서울대학교)
저널정보
한국실험동물학회 Laboratory Animal Research Laboratory Animal Research Vol.26 No.2
발행연도
2010.6
수록면
181 - 196 (16page)

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Human fibroblasts were developed for cellular therapy with the aim of correcting of depressed scars, but the safety of that in vivo is unclear. In this study, we assessed the safety of human fibroblasts by investigating the tumorigenicity, 13-week toxicity and through distribution studies. In the tumorigenicity test, nude mice were divided into three dosage level treatment groups with a negative/positive control group. At 6 months after intradermal transplantation, all of the treatment groups showed no development of a nodule on the injection sites and organs. Toxicity studies were performed using ICR and BALB/c mice for 13 weeks. The mice were divided into three dosage level treatment groups with a control and a syngeneic group. There was no treatment-related effect on clinical signs, mortality, body weight, food/water consumption, hematology, serum biochemistry, urine, necropsy findings and histopathological findings in any groups. These results suggest that the no-observed-effect level (NOEL) of the human fibroblasts was greater than 7.5×10? cells/kg for mice. In the distribution study, groups were treated with fibroblasts labeled with a fluorescent dye (CM-DiI) at low and high doses with a control and a syngeneic group. At 24 hours, a large percentage of the labeled fibroblasts were observed at the dermal layer. At 3 months, fluorescence of the labeled fibroblasts continued to be observed. Other tissues were not detected the fluorescence at any time. These studies demonstrate that the safety of human fibroblasts is reasonable with no toxic effect, no tumorigenicity and retention in the dermis. Our studies define preclinical safety testing standards relevant to the development of cellular therapeutics.

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UCI(KEPA) : I410-ECN-0101-2010-510-003103737