Generation of Induced Pluripotent Stem Cells from Diabetic Foot Ulcer Fibroblasts Using a Nonintegrative Sendai Virus.
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.
1 Department of Diagnostic Sciences, School of Dental Medicine, Tufts University , Boston, Massachusetts.
Behzad
B
Gerami-Naini
1 Department of Diagnostic Sciences, School of Dental Medicine, Tufts University , Boston, Massachusetts.
Avi
A
Smith
2 Department of Cell, Molecular, and Developmental Biology, Sackler School of Graduate Biomedical Sciences, Tufts University , Boston, Massachusetts.
Anna G
AG
Maione
1 Department of Diagnostic Sciences, School of Dental Medicine, Tufts University , Boston, Massachusetts.
Olga
O
Kashpur
1 Department of Diagnostic Sciences, School of Dental Medicine, Tufts University , Boston, Massachusetts.
Gianpaolo
G
Carpinito
3 Microcirculation Laboratory and Joslin-Beth Israel Deaconess Foot Center, Beth Israel Deaconess Medical Center, Harvard University , Boston, Massachusetts.
Aristides
A
Veves
4 Wyss Institute for Biologically Inspired Engineering, School of Engineering and Applied Sciences, Harvard University , Cambridge, Massachusetts.
David J
DJ
Mooney
1 Department of Diagnostic Sciences, School of Dental Medicine, Tufts University , Boston, Massachusetts.
Jonathan A
JA
Garlick
D000818:Animals; D002454:Cell Differentiation; D002478:Cells, Cultured; D065150:Cellular Reprogramming; D017719:Diabetic Foot / Q000235:genetics / Q000473:pathology*; D005347:Fibroblasts / Q000166:cytology* / Q000378:metabolism; D006801:Humans; D057026:Induced Pluripotent Stem Cells / Q000166:cytology* / Q000378:metabolism; D051379:Mice; D016513:Mice, SCID; D029082:Sendai virus / Q000235:genetics*; D013724:Teratoma / Q000209:etiology / Q000473:pathology*