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Related Experiment Videos

Intraperitoneally implanted artificial pancrease with transkaryotic beta-cells on microcarrier beads in a diffusion

S Sasaki1, Y Nio, N Hirahara

  • 1First Department of Surgery, Shimane Medical University, Japan.

In Vivo (Athens, Greece)
|August 17, 2000
PubMed
Summary

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An artificial pancreas using engineered cells in a diffusion chamber effectively normalized blood glucose in diabetic rats for 12 weeks. This novel approach shows promise for future pancreas transplantation alternatives.

Area of Science:

  • Biotechnology
  • Cell Biology
  • Endocrinology

Background:

  • Pancreas transplantation faces challenges, highlighting the need for artificial pancreas development.
  • A transkaryotic artificial beta-cell line (CHO/I) was created by transfecting the human proinsulin gene into Chinese hamster ovary (CHO) cells.

Purpose of the Study:

  • To evaluate the efficacy of an artificial pancreas model using a diffusion chamber containing CHO/I cells.
  • To assess the therapeutic potential of engineered cells for diabetes management.

Main Methods:

  • Diabetic Wistar rats (90% pancreatectomy) received diffusion chambers with CHO/I cells cultured on microcarrier beads.
  • Cell proliferation and in vivo glucose/insulin levels were monitored.

Main Results:

Related Experiment Videos

  • Microcarrier beads significantly enhanced CHO/I cell production (100-fold increase in vitro).
  • Implanted diffusion chambers normalized fasting blood glucose and increased insulin levels in diabetic rats for 12 weeks.
  • Implanted rats showed impaired glucose tolerance, indicating limited response to glucose loading.

Conclusions:

  • An artificial pancreas utilizing a diffusion chamber with human proinsulin gene-transfected cells presents a promising model.
  • This approach may offer a viable alternative for future clinical applications in diabetes treatment.