β cells occur naturally in extrahepatic bile ducts of mice

J R Dutton, N L Chillingworth, D Eberhard, C R Brannon, M A Hornsey, D Tosh, J M W Slack

Research output: Contribution to journalArticle

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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.
Original languageEnglish
Pages (from-to)239-245
Number of pages7
JournalJournal of Cell Science
Volume120
Issue number2
DOIs
Publication statusPublished - 2007

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Extrahepatic Bile Ducts
Bile Ducts
Pancreas
Insulin-Secreting Cells
Insulin
Vertebrates
Epithelium
Common Hepatic Duct
Pancreatic Polypeptide
Regenerative Medicine
Endocrine Cells
C-Peptide
Secretory Vesicles
Somatostatin
Embryonic Development
Glucose
Liver

Cite this

Dutton, J. R., Chillingworth, N. L., Eberhard, D., Brannon, C. R., Hornsey, M. A., Tosh, D., & Slack, J. M. W. (2007). β cells occur naturally in extrahepatic bile ducts of mice. Journal of Cell Science, 120(2), 239-245. https://doi.org/10.1242/jcs.03330

β cells occur naturally in extrahepatic bile ducts of mice. / Dutton, J R; Chillingworth, N L; Eberhard, D; Brannon, C R; Hornsey, M A; Tosh, D; Slack, J M W.

In: Journal of Cell Science, Vol. 120, No. 2, 2007, p. 239-245.

Research output: Contribution to journalArticle

Dutton, JR, Chillingworth, NL, Eberhard, D, Brannon, CR, Hornsey, MA, Tosh, D & Slack, JMW 2007, 'β cells occur naturally in extrahepatic bile ducts of mice', Journal of Cell Science, vol. 120, no. 2, pp. 239-245. https://doi.org/10.1242/jcs.03330
Dutton JR, Chillingworth NL, Eberhard D, Brannon CR, Hornsey MA, Tosh D et al. β cells occur naturally in extrahepatic bile ducts of mice. Journal of Cell Science. 2007;120(2):239-245. https://doi.org/10.1242/jcs.03330
Dutton, J R ; Chillingworth, N L ; Eberhard, D ; Brannon, C R ; Hornsey, M A ; Tosh, D ; Slack, J M W. / β cells occur naturally in extrahepatic bile ducts of mice. In: Journal of Cell Science. 2007 ; Vol. 120, No. 2. pp. 239-245.
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