Journal
CELL STRUCTURE AND FUNCTION
Volume 26, Issue 2, Pages 79-86Publisher
JAPAN SOC CELL BIOLOGY
DOI: 10.1247/csf.26.79
Keywords
DNA methyltransferase; small intestine; cell proliferation
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In cultured cells, the maintenance-type DNA methyltransferase (Dnmt1) is highly expressed during the proliferation stage. In the present study, we detected significant expression of Dnmt1 protein in the nuclear fraction of mouse small intestine. From its mobility in SDS polyacrylamide gel electrophoresis and the specific antibodies against the somatic cell-type Dnmt1, Dnmt1 was determined as a somatic cell type. Immunofluorescence study revealed that the Dnmt1 was highly expressed in the proliferating stem cells in crypts, and was localized in the nuclei. The present results indicate that the expression of Dnmt1 in vivo is also under the control of cell proliferation as in cultured cells.
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