[Isolation, purification and identification of epithelial cells derived from fetal islet-like cell clusters].
The aim of this article is to provide methods for the isolation and identification of pancreatic stem cells and cell source for research and therapy of diabetes. ICCs were isolated by collagenase IV digesting and then cultured; epithelial cells were purified from monolayer cultured ICCs. The growth curve of the epithelial cells was measured by MTT. The expression of molecular markers in the cells was identified by immunohistochemical staining. The surface markers in the epithelial cells were analyzed by FACS. Epithelial cells were purified from isolated human fetal ICCs and passaged 40 times, and 10(6) - 10(8) cells were cryopreservated per passage. The growth curve demonstrated that the epithelial cells proliferated rapidly. The epithelial cells expressed PDX-1, PCNA, CK-7, CK-19, Nestin, Glut2, and Vimentin, but Insulin was undetected. The cells expressed CD29, CD44, and CD166, but did not express CD11a, CD14, CD34, CD45, CD90, CD105, and CD117. Taken together, these results indicate that self-renewable epithelial cells can be isolated and purified from human fetal pancreas. These also show that the epithelial cells originate from ducts and have the characteristics of pancreatic stem cells.
Qiao
Hai
H
Northwest A & F University, Shaanxi Branch of National Stem Cell Engineering & Technology Center, Yangling 712100, China.
Zhao
Ting
T
Wang
Yun
Y
Yang
Chun-Rong
CR
Xiao
Mei
M
Dou
Zhong-Ying
ZY
D018929:Cell Culture Techniques; D049109:Cell Proliferation; D002469:Cell Separation; D002470:Cell Survival; D002478:Cells, Cultured; D004847:Epithelial Cells / Q000166:cytology* / Q000378:metabolism; D005333:Fetus; D005434:Flow Cytometry; D018398:Homeodomain Proteins / Q000032:analysis; D006801:Humans; D018960:Hyaluronan Receptors / Q000032:analysis; D007150:Immunohistochemistry; D019012:Integrin beta1 / Q000032:analysis; D007515:Islets of Langerhans; D018809:Proliferating Cell Nuclear Antigen / Q000032:analysis; D013234:Stem Cells / Q000166:cytology* / Q000378:metabolism; D015534:Trans-Activators / Q000032:analysis
D018398:Homeodomain Proteins; D018960:Hyaluronan Receptors; D019012:Integrin beta1; D018809:Proliferating Cell Nuclear Antigen; D015534:Trans-Activators; C084010:pancreatic and duodenal homeobox 1 protein