Behavior of a cell line derived from normal human hepatocytes on non-physiological and physiological-type substrates: Evidence for enhancement of secretion of liver-specific proteins by a three-dimensional growth pattern |
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Authors: | Matthew Smalley Kenneth Leiper David Floyd Margaret Mobberley Tim Ryder Clare Selden Eve A Roberts Humphrey Hodgson |
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Institution: | (1) Liver Group Laboratory, Department of Medicine, Royal Postgraduate Medical School, Hammersmith Hospital, Du Cane Road, W12 0NN London, United Kingdom;(2) Electron Microscopy Unit, Department of Pathology, Queen Charlotte’s and Chelsea Hospital, Goldhawk Road, W6 0XG London, United Kingdom;(3) Division of Gastroenterology and Nutrition, The Hospital for Sick Children Research Institute, University of Toronto, Toronto, Ontario, Canada;(4) Present address: Section of Cell Biology and Experimental Pathology, Haddow Laboratories, Institute of Cancer Research, 15 Cotswold Road, SM2 5NG Sutton, Surrey, United Kingdom |
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Abstract: | Summary The behavior of a recently described cell line, HH25, derived from normal human hepatocytes, has been investigated on several
different substrates—tissue-culture plastic, glass, a thin layer of rat-tail collagen I, and thin layers or thick gels of
extracellular matrix derived from the Engelbreth-Holm-Swarm murine sarcoma (EHS matrix). Cellular morphology, proliferation,
and secretion of three hepatocyte-specific proteins (albumin, α1 acid glycoprotein, and α1 antitrypsin) have been examined. There were no differences in morphology, proliferation, or differentiated function in the
cells on either plastic, glass, collagen, I, or a thin layer of EHS matrix, but on a thick EHS matrix gel the cells altered
their morphology (forming three-dimensional colonies with canalicular-like structures) and their production of albumin and
α1 acid glycoprotein was enhanced. This suggests that the enhanced differentiated function is associated with the morphological
change (occurring only on the thick EHS gel) rather than with receptor-mediated cell-matrix interactions (which can also occur
on the thin layer of EHS matrix). This cell line is therefore a good in vitro cellular model for the investigation of the roles of morphological changes and of cell-cell and cell-matrix interactions
in the control of human hepatocyte behavior without the need for an extensive source of primary tissue. |
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Keywords: | EHS matrix morphology differentiation albumin canaliculi |
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