Abstract
We have previously found that two types of clathrin signals, dot and diffuse, located in mitotic spindle in BY-2 cells stained with an antibody against clathrin heavy chain. In the present study, we analyzed the live image of BY-2 cells expressing YFP-clathrin light chain. Dot signals were observed around spindles. In addition, diffuse signals were also observed on spindle. Analyses were carried out in BY-2 cells expressing both C-terminal region of clathrin heavy chain and GFP-tubulin. The metaphase was significantly prolonged and the spindle became aberrant during the anaphase. These results suggested that clathrin is involved in stabilizing the mitotic spindle.