Cadherins constitute a superfamily of Ca(2+)-dependent cell adhesion molecules that play critical roles in the maintenance of tissue structure and morphogenesis. Their dysregulation is commonly observed in a variety of cancers. Liver-intestine cadherin (LI-cadherin), which was so named in view of its sole expression in the liver and intestine of the rat, is a structurally unique member of the cadherin superfamily, possessing seven cadherin repeats within the extracellular cadherin domain and only 25 amino acids in the cytoplasmic domain. Its adhesive property does not require any interaction with cytoplasmic components such as catenins, and it responds to small changes in extracellular Ca(2+) below the physiological plasma concentration. In humans, the distribution of LI-cadherin is limited to the duodenum, jejunum, ileum, colon, and part of the pancreatic duct. Data accumulated from studies of the biological characteristics of LI-cadherin have shown that it plays an important role in the pathophysiology of human cancers. Here, we review recent information about LI-cadherin and its implications for cancer progression.
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Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan; Institute of Medical Science, The University of Tokyo, Tokyo, Japan; Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Tokyo, Japan. Electronic address:
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