Research

β cells occur naturally in extrahepatic bile ducts of mice


Reference:

Dutton, J. R., Chillingworth, N. L., Eberhard, D., Brannon, C. R., Hornsey, M. A., Tosh, D. and Slack, J. M. W., 2007. β cells occur naturally in extrahepatic bile ducts of mice. Journal of Cell Science, 120 (2), pp. 239-245.

Related documents:

This repository does not currently have the full-text of this item.
You may be able to access a copy if URLs are provided below.

Official URL:

http://dx.doi.org/10.1242/jcs.03330

Abstract

Insulin-secreting β cells were thought to reside only in the pancreas. Here, we show that β cells are also present in the extra-hepatic bile ducts of mice. They are characterised by insulin and C-peptide content, the presence of secretory granules that are immunoreactive for insulin, and the ducts exhibit glucose-stimulated insulin secretion. Genetic lineage labelling shows that these β cells arise from the liver domain rather than the pancreas and, by histological study, they appear to be formed directly from the bile duct epithelium in late embryogenesis. Other endocrine cell types ( producing somatostatin and pancreatic polypeptide) are also found in close association with the bile-duct-derived β cells, but exocrine pancreatic tissue is not present. This discovery of β cells outside the mammalian pancreas has implications for regenerative medicine, indicating that biliary epithelium might offer a new source of β cells for the treatment of diabetes. The finding also has evolutionary significance, because it is known that certain basal vertebrates usually form all of their β cells from the bile ducts. The mammalian bile-duct-derived β cells might therefore represent an extant trace of the evolutionary origin of the vertebrate β cell.

Details

Item Type Articles
CreatorsDutton, J. R., Chillingworth, N. L., Eberhard, D., Brannon, C. R., Hornsey, M. A., Tosh, D. and Slack, J. M. W.
DOI10.1242/jcs.03330
DepartmentsFaculty of Science > Biology & Biochemistry
RefereedYes
StatusPublished
ID Code3570
Additional InformationID number: ISI:000243723900005

Export

Actions (login required)

View Item