Transdifferentiating of adult human pancreatic stem cells into islet cells / 中华外科杂志
Chinese Journal of Surgery
;
(12): 807-810, 2002.
Artigo
em Chinês
| WPRIM
| ID: wpr-264754
ABSTRACT
<p><b>OBJECTIVE</b>To understand and improve the transdifferentiation of pancreatic stem cells into islet cells through isolation, cultivation and transdifferentiation of adult human pancreatic duct cells.</p><p><b>METHODS</b>A portion of adult human pancreas was digested with collagenase, followed by incontinuous density gradient to separate islets from the acinar and ductal tissue. Duct epithelial cells were cultivated in CMRL1066 and then in serum-free DMEM/F12 medium with the addition of growth factors for 27 days. Samples were taken at different time points for light and electron microscopic examination and for immunocytochemical study with antibodies against transdifferentiation gene PDX-1 and protein CK-19. Amylase and insulin contents in the medium were assayed.</p><p><b>RESULTS</b>A large number of duct epithelial cells were harvested after the isolation of islets. Some duct epithelial cells were PDX-1 and CK-19 positive at day one and duct epithelial cells proliferated and expanded rapidly and then transdifferentiated into stem cells and finally 3D islets. 760 islets were harvested from each gram of pancreatic tissue on day 27.</p><p><b>CONCLUSIONS</b>Adult pancreatic duct cells are potential stem cells and could be transdifferentiated into islet cells in vitro under appropriate conditions.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Pâncreas
/
Fisiologia
/
Células-Tronco
/
Diferenciação Celular
/
Ilhotas Pancreáticas
/
Biologia Celular
Limite:
Adulto
/
Humanos
Idioma:
Chinês
Revista:
Chinese Journal of Surgery
Ano de publicação:
2002
Tipo de documento:
Artigo
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