METHOD OF SCREENING REPORGRAMMING FACTOR, REPROGRAMMING FACTOR SCREENED BY THE METHOD, METHOD OF USING THE REPROGRAMMING FACTOR, METHOD OF DIFFERENTIATING UNDIFFERENTIATED FUSED CELLS AND METHOD OF CONSTRUCTING CELL, TISSUES AND ORGANS

摘要

Somatic cells are treated with a component contained in ES cells and the activity is detected. Thus, a reprogramming factor can be screened. Moreover, somatic cells can be reprogrammed by treating with a component containing the reprogramming factor or the reprogramming factor per se. Since the tetraploid cells as described above are capable of undergoing proliferation and multidifferentiation, cells, tissues and organs usable in transplantation are produced by differentiating the cells.