人類胚胎幹細胞跟人類誘導型多能幹細胞因為他們能分化成各種體細胞的特殊能力，這個能力有許多潛能可以應用在治療許多疾病上,，然而人類胚胎幹細胞和人類誘導型多能幹細胞於臨床醫學上會受限於使用老鼠成纖維母細胞當作飼養層，在此篇我們成功培養出人類誘導型多能幹細胞且沒使用老鼠成纖維母細胞當作飼養層，我們用逆轉錄病毒含有四個多能性基因轉錄人類脂肪幹細胞製造出人類誘導型多能幹細胞並培養在合成的盤子(VN-dishes)，在轉錄的第四天，轉錄四個多能性基因的人類脂肪幹細胞轉移到老鼠成纖維母細胞為飼養層的盤子上當作對照組另一組則移到合成的盤子(VN-dishes)培養，在轉錄的14天之後可以清楚看到人類誘導型多能幹細胞菌落在老鼠成纖維母細胞，而人類誘導型多能幹細胞菌落在合成的盤子(VN-dishes)也能檢測到， 當 105 個人類脂肪幹細胞種在盤子上，人類誘導型多能幹細胞菌落在老鼠成纖維母細胞上大約12028個，而在合成的盤子上(VN-dishes)大約258個，人類誘導型多能幹細胞培養在合成盤子(VN-dishes)的生成效率比培養在老鼠成纖維母細胞上還要低，不過在合成盤子(VN-dishes)上的人類誘導型多能幹細胞菌落可以顯示鹼性磷酸酶(AP staining)，用免疫螢光染色也可以清楚的表現出SSEA-4的多能性蛋白，這些都能指出我們成功地製造出人類誘導型多能幹細胞培養在無飼養層的合成盤子(VN-dishes)上。;Human embryonic stem cells (hESCs) and human induced pluripotent stem cells (hiPSCs) have potentially therapeutic applications in the treatment of many diseases, due to their unique ability to differentiate into any type of somatic cell. However, the clinical potential of hESCs and hiPSCs is restricted by the use of mouse embryonic fibroblasts (MEFs) as a feeder layer for these cells. I found that hiPSCs can be successfully generated without the use of a feeder layer of MEFs. hiPSCs were generated by transducing human adipose-derived stem cells (hADSCs) with a retrovirus containing pluripotency genes, and the hiPSCs were cultured on synthetic dishes grafted with an oligopeptide derived from vitronectin (VN-dish). On the fourth day after transduction, the hADSCs transduced with pluripotency genes were transferred to a MEF layer for culturing as a control condition or to VN-dishes for culture. The hiPSC colonies in the MEF-cultures were clearly observed at day 14 after transduction, whereas hiPSC colonies were detected on the VN-dishes after the cells were passaged. When 105 hADSCs were seeded on the dishes, the number of colonies generated on the MEFs was 12028, while the number of colonies generated on VN-dishes was 258. Thus, the efficiency of hiPSC generation on the VN-dishes under feeder-free conditions was lower than hiPSCs cultured on MEFs. However, the hiPSC colonies from VN-dishes demonstrated alkaline phosphatase activity, and immunohistochemistry suggested that the hiPSCs generated on VN-dishes expressed the pluripotency protein, stage-specific embryonic antigen-4 (SSEA-4), under feeder-free conditions.
