2016年8月13日/生物谷BIOON/--在一項新的研究中,來自美國塔夫茨大學和哈佛大學的研究人員成功地將來自糖尿病足部潰瘍(diabetic foot ulcer)皮膚的成纖維細胞重編程為誘導性多能幹細胞(iPS細胞)。這種重編程技術在效率上類似於利用來自非糖尿病病人的健康足部皮膚細胞經過重編程所產生的iPS細胞。這代表著人們在利用病人自己的細胞治療難治癒性慢性創面(non-healing chronic wounds)---糖尿病的一種嚴重的併發症---方面取得重大進展。相關研究結果發表在2016年7月26日那期
Cellular Reprogramming期刊上,論文標題為「Generation of Induced Pluripotent Stem Cells from Diabetic Foot Ulcer Fibroblasts Using a Nonintegrative Sendai Virus」。論文通信作者為來自塔夫茨大學牙醫學院診斷科學系的Behzad Gerami-Naini博士。
iPS細胞有潛力分化為許多種細胞類型,能夠被用來構建疾病模型來研究新的治療方法,如激活體內再生能力從而可能能夠將非治癒性的成纖維細胞轉化為再次獲得修復功能的皮膚細胞。
在這項新的研究中,研究人員利用一種非整合性的仙臺病毒將來自糖尿病足部潰瘍皮膚的成纖維細胞系重編程為iPS細胞。他們描述了源自糖尿病足部潰瘍皮膚的成纖維細胞在經過重編程後在未來的治療潛力,這些細胞經過表觀遺傳重塑後可能能夠逆轉疾病過程。
Cellular Reprogramming期刊總編輯、英國醫學研究理事會再生醫學中心名譽教授Ian Wilmut爵士說,「這項研究提供兩種新的方法來研究和治療糖尿病足部潰瘍。它揭示出用來治療這種潰瘍的一種新的細胞來源。此外,對來自糖尿病足部潰瘍皮膚的成纖維細胞經重編程後產生的iPS細胞進行研究可能能夠揭示出導致這種潰瘍的分子變化。」(生物谷 Bioon.com)
本文系生物谷原創編譯整理,歡迎轉載!點擊 獲取授權 。更多資訊請下載生物谷APP。Generation of Induced Pluripotent Stem Cells from Diabetic Foot Ulcer Fibroblasts Using a Nonintegrative Sendai VirusBehzad Gerami-Naini, Avi Smith,1 Anna G. Maione,2 Olga Kashpur,1 Gianpaolo Carpinito,1 Aristides Veves,3 David J. Mooney,4 and Jonathan A. Garlick
doi:
10.1089/cell.2015.0087PMC:PMID:Diabetic foot ulcers (DFUs) are nonhealing chronic wounds that are a serious complication of diabetes. Since induced pluripotent stem cells (iPSCs) may offer a potent source of autologous cells to heal these wounds, we studied if repair-deficient fibroblasts, derived from DFU patients and age- and site-matched control fibroblasts, could be reprogrammed to iPSCs. To establish this, we used Sendai virus to successfully reprogram six primary fibroblast cell lines derived from ulcerated skin of two DFU patients (DFU8, DFU25), nonulcerated foot skin from two diabetic patients (DFF24, DFF9), and healthy foot skin from two nondiabetic patients (NFF12, NFF14). We confirmed reprogramming to a pluripotent state through three independent criteria: immunofluorescent staining for SSEA-4 and TRA-1-81, formation of embryoid bodies with differentiation potential to all three embryonic germ layers in vitro, and formation of teratomas in vivo. All iPSC lines showed normal karyotypes and typical, nonmethylated CpG sites for OCT4 and NANOG. iPSCs derived from DFUs were similar to those derived from site-matched nonulcerated skin from both diabetic and nondiabetic patients. These results have established for the first time that multiple, DFU-derived fibroblast cell lines can be reprogrammed with efficiencies similar to control fibroblasts, thus demonstrating their utility for future regenerative therapy of DFUs.
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