Diabetes & Metabolism Journal

Original Article

Differentiation of Pancreatic beta Cells from Human Pancreatic Duct Cells Derived from a Partial Pancreas Tissue.: Ki Ho Song, Myung Mee Kim, Min Kyung Lee, Gyeong Ryul Ryu, Seung Hyun Ko, Sung Dae Moon, Yu Bae Ahn, Kun Ho Yoon, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Hyung Min Chin; Korean Diabetes J. 2007;31(3):236-242. Published online May 1, 2007; DOI: https://doi.org/10.4093/jkda.2007.31.3.236

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BACKGROUND
Despite a recent breakthrough in human islet transplantation for treating diabetes mellitus, the limited availability of insulin-producing tissue is still a major obstacle. This has led to a search for alternative sources of transplantable insulin-producing cells including pancreatic duct cells. We aimed to establish in vitro culture of pancreatic duct cells from a partial pancreas tissue in human, which could be harnessed to differentiate into pancreatic beta cells. METHODS: We isolated pancreatic duct cells from small pieces of pancreas tissue (1~3 g) derived from non-diabetic humans (n = 8) undergoing pancreatic surgery due to cancer. Pancreas tissue was finely minced after injection of collagenase P into the parenchyma. The mince was incubated in a shaking water bath at 37degrees C for 25 min and passed through a 150 micrometer mesh. The released cells were recovered, washed, and plated in a dish containing CMRL culture medium with serum. RESULTS: Isolated pancreatic cells grew in monolayer and became confluent in 1~2 wks showing typical epithelial cobblestone morphology. Immunochemistry demonstrated that ~90% of the cultured cells were cytokeratin7-positive duct cells. To induce beta cell differentiation, the cells were incubated in DMEM/F12 culture medium without serum. In addition, treatment with Matrigel overlay, exendin-4, cholera toxin or forskolin was done. Though beta cell differentiation was found by immunostaining and RT-PCR, the differentiation efficiency was very low. Over-expression of neurogenin-3 by recombinant adenovirus did not increase beta cell differentiation of the cultured duct cells significantly. CONCLUSION: We established in vitro culture of pancreatic duct cells from a partial pancreas tissue in human, which differentiate into pancreatic cells. However, a strategy to optimize beta cell differentiation in this model is needed.

Citations

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Transdifferentiation of Enteroendocrine K-cells into Insulin-expressing Cells
Esder Lee, Jun Mo Yu, Min Kyung Lee, Gyeong Ryul Ryu, Seung-Hyun Ko, Yu-Bae Ahn, Sung-Dae Moon, Ki-Ho Song
Korean Diabetes Journal.2009; 33(6): 475. CrossRef

Review

The Roles of Clusterin on Morphogenesis of Beta Cells During Pancreas Regeneration.: Seok Woo Hong, KC Ranjan, Song Lee, Yong Jae Shin, Bon Hong Min, In Sun Park; Korean Diabetes J. 2007;31(1):1-8. Published online January 1, 2007; DOI: https://doi.org/10.4093/jkda.2007.31.1.1

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Abstract PDF

Clusterin is a highly glycosylated heterodimeric glycoprotein that plays diverse biological roles in various organs. The secreted clusterin has been established as a major form of the protein that exerts diverse tissue effects. For instance, clusterin is known to act in cell protection through the actions of extra-cellular molecular chaperones. In the extracellular milieu, clusterin participates in specific interactions with a diverse array of native biological molecules including LRP-2 (Lipoprotein receptor-related protein 2, also known as gp330 or megalin), which is involved in ligand endocytosis at the surfaces of certain epithelia. Clusterin is expressed transiently in developing and differentiating endocrine pancreatic cells and might be involved in pancreas development. This transient expression of clusterin at specific time points of pancreas development and cell differentiation during pancreas regeneration implies that the protein is a regulatory factor for cytodifferentiation as well as for replication. A specific action of the clusterin in the reconstruction and remodeling of the endocrine pancreas has been demonstrated. It also strongly stimulates duct cell differentiation into insulin-secreting cells under in vitro culture conditions. Clusterin appears thus as a potent regulator of insulin cell morphogenesis.

Citations

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Effect of African Mango (Irvingia gabonesis, IGOB 131^TM) Extract on Glucose Regulation in STZ-Induced Diabetes
Yejin Ha, Minhee Lee, Han Ol Kwon, Yoo-Hyun Lee
Journal of the Korean Society of Food Science and Nutrition.2015; 44(11): 1607. CrossRef

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