Abstract:
:Cell-CAM 105 is an integral cell surface glycoprotein that is involved in cell-cell adhesion of adult rat hepatocytes in vitro. In the present report we used a radio-immunoassay, a quantitative immunoblotting technique and immunofluorescence microscopy to investigate the expression of cell-CAM 105 in fetal and regenerating rat liver. In the fetal liver cell-CAM 105 did not appear until day 16 of the gestation, when it increased rapidly to reach the level found in adult liver, 3 weeks after birth. In liver regenerating after partial hepatectomy a transient decrease in the amount of cell-CAM 105 was observed in the plasma membranes of the hepatocytes. A significant decrease was observed as early as 12 h after partial hepatectomy, reaching a minimum by 3 days after the operation, corresponding to approx. 35% of the amount of cell-CAM 105 in normal liver. The amount then increased slowly and was back to the normal level by about 15 days after partial hepatectomy. The results indicate that cell-CAM 105 exerts its major function in terminally differentiated cells. An excellent correlation was seen between the kinetics of the expression of cell-CAM 105 and of reported changes of both enzymatic and organizational patterns of hepatocytes in regenerating and fetal liver. This suggests that cell-CAM 105 could be important for the development and maintenance of the cell-cell binding and organizational pattern characteristic of terminally differentiated hepatocytes.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Odin P,Obrink Bdoi
10.1016/0014-4827(86)90458-1subject
Has Abstractpub_date
1986-05-01 00:00:00pages
103-14issue
1eissn
0014-4827issn
1090-2422pii
0014-4827(86)90458-1journal_volume
164pub_type
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