Laminin expression during bone marrow mononuclear cell transplantation in hepatectomized rats

Carvalho S., Cortez E., Stumbo A.C., Thole A., Caetano C., Marques R., Pelajo-Machado M., Cristóvao Porto L., Carvalho L.Cell Biology International, 2008

The aim of this study was to investigate laminin expression during liver regeneration induced by partial hepatectomy followed by bone marrow mononuclear cell (BMMNC) transplantation (injected into recently hepatectomyzed rats via the portal vein). Results showed that 15 min after partial hepatectomy, a transplanted CD34+ HSC was found in contact with laminin, which was localized in the portal and centrilobular veins of rat livers. Furthermore, 1 and 3 days after hepatectomy, transplanted BMMNCs were found in the hepatic sinusoids (endothelia) expressing laminin. These results strongly suggest that laminin might be an important extracellular matrix component for bone marrow cell attachment and migration in the injured liver.