After Keisuke received his bachelor’s degree from Kyoto University in 1984, he began his career as an instructor at the Institute for Experimental Animals in Kochi Medical School and studied the mechanism by which superoxide is generated by neutrophils. After he received his Ph.D. degrees from Kyoto University and Kochi Medical School, Keisuke obtained a position as a lecturer at the College of Agriculture, Kochi University in 1993, and began to study the cryobiology of mammalian oocytes and embryos. Keisuke’s current position is as an Associate Professor of Laboratory of Animal Science in the same college.

In the last decade, Keisuke has been studying the mechanism by which water and cryoprotectants move through the plasma membrane of mammalian oocytes and embryos with special reference to the role of aquaporins, because the movement of these substances plays a crucial role in the survival of the cells after cryopreservation. Moreover, he is trying to express aquaporins artificially in fish oocytes in order to realize the cryopreservation of fish oocytes, which have a much larger cell volume and thus a very low surface/volume ratio, by promoting the movement of water and cryoprotectants through the plasma membrane.