In vitro study of using calcium phosphate cement as immunoisolative device to enclose insulinoma/agarose microspheres as bioartificial pancreas

Kai Chiang Yang, Ching Yao Yang, Chang Chin Wu, Tzong Fu Kuo, Feng Huei Lin

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

In this study, the feasibility of using calcium phosphate cement (CPC) as immunoisolative device to enclose insulinoma/agarose microspheres as bioartificial pancreas was evaluated. We fabricated a chamber by CPC and utilized X-ray diffraction, Scanning electron microscope and Mercury intrusion porosimetry to identify the characters of the CPC chamber. The nominal molecular weight cut-off and cytotoxicity of CPC chamber were also evaluated. An insulinoma cell line (RIN-m5F) was chosen as insulin source and encapsulated in agarose microspheres and then enclosed in preformed CPC chamber. Insulin secretion was analyzed by Enzyme-linked immunosorbant assay to evaluate the function of insulinoma enclosed in CPC chamber. Results showed that the CPC chamber was non-cytotoxicity to insulinoma and can block the penetration of molecules which molecular weight larger than 12.4 kDa. Insulinoma inside the CPC chamber can secrete insulin in stable level for 30 days. This study indicated that we may use CPC as immunoisolative material to enclose insulinoma/agarose microspheres as bioartificial pancreas.

Original languageEnglish
Pages (from-to)1288-1295
Number of pages8
JournalBiotechnology and Bioengineering
Volume98
Issue number6
DOIs
Publication statusPublished - Dec 15 2007
Externally publishedYes

Keywords

  • Calcium phosphate cement
  • Cell therapy
  • Encapsulation
  • Immunoisolation

ASJC Scopus subject areas

  • Biotechnology
  • Microbiology

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