Abstract
p27(Kip1) is an important regulator of cyclin-dependent kinases. Studies with p27 knockout mice have revealed abnormalities in proliferation and differentiation of multiple cell types. Here we show that primary hepatocytes isolated from livers of adult p27 knockout mice exhibit higher levels of DNA synthesis activity in culture than do wild-type cells. Interestingly, we found that, compared with control hepatocytes, p27 knockout hepatocytes proliferate better after transplantation into diseased livers to reverse liver failure. These results reveal an aspect of p27 that could be used to benefit cell-based therapy.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Animals
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CDC2-CDC28 Kinases*
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Cell Cycle Proteins / genetics*
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Cell Cycle Proteins / physiology*
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Cell Division
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Cells, Cultured
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Cyclin-Dependent Kinase 2
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Cyclin-Dependent Kinase Inhibitor p27
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Cyclin-Dependent Kinases / metabolism
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DNA / biosynthesis
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Hepatocytes / metabolism
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Hepatocytes / pathology
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Hepatocytes / transplantation*
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Hydrolases / genetics
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Liver Diseases / metabolism
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Liver Diseases / pathology
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Liver Diseases / surgery*
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Liver Transplantation
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Male
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Mice
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Mice, Inbred C57BL
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Mice, Knockout
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Protein Serine-Threonine Kinases / metabolism
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Tumor Suppressor Proteins*
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Tyrosinemias / genetics
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Tyrosinemias / metabolism
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Tyrosinemias / pathology
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Tyrosinemias / surgery
Substances
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Cdkn1b protein, mouse
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Cell Cycle Proteins
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Tumor Suppressor Proteins
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Cyclin-Dependent Kinase Inhibitor p27
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DNA
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Protein Serine-Threonine Kinases
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CDC2-CDC28 Kinases
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Cdk2 protein, mouse
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Cyclin-Dependent Kinase 2
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Cyclin-Dependent Kinases
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Hydrolases
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fumarylacetoacetase