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Functional improvement of pig islet with exocrine encapsulation

 K.H. Huh  ;  J.-I. Lee  ;  J.Y. Kim  ;  J.H. Jeong  ;  Y. Fang  ;  Y.-J. Park  ;  C.M. Kang  ;  Y.S. Kim 
 TRANSPLANTATION PROCEEDINGS, Vol.41(1) : 323-325, 2009 
Journal Title
Issue Date
Animals ; Cell Culture Techniques/methods ; Cell Separation/methods ; Cell Survival ; Insulin/secretion ; Islets of Langerhans/cytology* ; Islets of Langerhans/secretion ; Islets of Langerhans Transplantation/physiology* ; Kinetics ; Pancreas/cytology ; Swine
Porcine-specific obstacles in islet isolation frequently result from the low purity or contamination with exocrine tissues. We implemented a new technique involving as capsulation of islets with excess exocrine tissue as a beneficial material to address those difficulties. Pig islets were hand-picked as high purity (HI) or low purity (LO) islets containing significant amounts of exocrine tissue. We performed static (ST) or shaking (SK) cultures of HI and LO islets. Islet function was examined after 24 hours by a glucose challenge test. Insulin secretion into the culture media was continuously measured using ELISA during a 6-day culture period. Islet function after 24 hours exhibited better maintenance under SK than ST culture as assessed by a stimulation index. The ideal islet morphology was seen in LO islets at 3 days of SK culture with typical islet shapes of a smooth surface and a spherical configuration. In contrast, typical islet morphology was not observed in HI islets under SK culture; maintenance of typical spherical appearances was difficult. Insulin secretion from LO islets under SK culture was higher than under other conditions during the 6-day period. Under SK culture conditions, exocrine-encapsulated LO islets showed enhanced islet function by condensing loose islet aggregates into firm spheroids with native exocrine tissues as a natural scaffold.
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Kang, Chang Moo(강창무) ORCID logo https://orcid.org/0000-0002-5382-4658
Kim, Yu Seun(김유선) ORCID logo https://orcid.org/0000-0002-5105-1567
Kim, Joon Ye(김준예) ORCID logo https://orcid.org/0000-0002-1180-2899
Park, Yun Jong(박윤종)
Fang, Yu Hui(방우휘)
Jeong, Jin Ho(정진호)
Huh, Kyu Ha(허규하) ORCID logo https://orcid.org/0000-0003-1364-6989
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