A novel monoclonal antibody identified hepatic stem-like cells in rats

Go Watanabe, Hiroshi Nanjo, Hirokazu Nagai, Jingshu Wang, Souichi Koyota, Yuzo Yamamoto, Toshihiro Sugiyama

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Both liver epithelial and oval cells are believed to be liver stem cells. We investigated the identification by producing monoclonal antibodies against liver epithelial cells. Monoclonal antibodies against hepatic stem-like cells (HSL cells) have been selected to follow the hepatic stem cells during hepatic regeneration and developmental changes in the liver. Monoclonal antibodies were induced by immunization of BALB/c mice with HSL cells established from the epithelial cells of the adult rat liver. The hybridomas were screened by indirect immunofluorescence staining of HSL cells. We produced a unique monoclonal antibody against HSL cells, MabH, which specifically recognizes liver epithelial cells. MabH did not react with liver parenchymal cells but did react with bile ductule cells under normal conditions in the adult liver. This antibody also reacted with oval cell lines and with the oval cells that appeared during liver regeneration. In addition, fetal liver cells showed immunoreactivity with MabH. Although the level of staining decreased after birth, some cells in the portal area remained highly reactive. These results suggested that liver epithelial cells, oval cells, and fetal liver cells possess a common cell marker of liver stem cells.

Original languageEnglish
Pages (from-to)103-110
Number of pages8
JournalMedical Molecular Morphology
Issue number2
Publication statusPublished - 2011 Jun
Externally publishedYes


  • Hepatoblast
  • Liver epithelial cell
  • Oval cell
  • Stem cell

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Molecular Biology


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