Bhanubhong Prommalee, Pharm.D.

Ph.D. student (double degree program)

I am so grateful to have an opportunity to be part of Dr. Aiko' s team. As a Thai pharmacist who is interested in clinical pharmacy and health informatics, getting more knowledge of skin regeneration and aging will be consolidated and conducted for my drug discovery research. 


Tomson Kosasih

Ph.D. student (MEXT)

Tomson is a student in the Graduate School of Medical Sciences. He obtained PharmD and MSc (Biomedical Sciences) before working in a Biopharmaceutical company on chemical protein modification for 2 years. From 2021, he is a member of Sada's Lab studying microbial signals-stem cell dynamics.

Wenxin Fan

Ph.D. student (IRCMS fellowship)

I am Wency. I come from China. I am graduated from Chongqing medical university. It is my great honor to join such a wonderful team under the guidance of Dr.Sada. I believe everything is possible if we put efforts to it! (世上无难事,只要肯攀登)Let’s give a shot!

Thisakorn Dumrongphuttidecha

Ph.D. student

Hi! I am from Thailand. I am interested in skin regeneration and aging. It is a wonderful opportunity to be a member of  Dr. Sada’s lab. I believe that I will get extensive medical knowledge and advanced research skills from IRCMS, Kumamoto University under the guidance of Dr. Sada and enjoy life in Kumamoto.

Takako Keida

​Laboratory Technician

Takako has been working in Kumamoto University for 20 years! She joined Sada lab in 2020 April. 

Rina Nagata

​Administrative Assistant

Ms. Nagata supports administrative work.


Aiko Sada, Ph.D.

Principal Investigator

Aiko Sada received a Ph.D. in 2011 from the Graduate University for Advanced Studies, Japan. Soon after her graduation, she joined Dr. Tudorita Tumbar’s laboratory at Cornell University, as a postdoctoral fellow, where she worked on identification and characterization of epidermal stem cells. In 2016, she started as a tenure-track Assistant professor at University of Tsukuba. In 2019 October, she was promoted to Associate professor and started her own laboratory at IRCMS, Kumamoto University. 

IMG_1271 Erna.jpeg

Erna Raja, Ph.D.

Postdoctoral Fellow

Hi, I am currently working on skin stem cell aging with Dr. Sada. We are interested in the aging mechanism due to cell intrinsic factors, microenvironment and cell-cell interaction. Research life has been exciting and gives me the chance to meet and learn from many different cultures.

In my free time I enjoy gardening, fishing, nature walk and eating good food! 

Nguyen Thi Kim Nguyen

Postdoctoral Fellow

Hi, my name is Nguyen. I am from Vietnam. 

I graduated from the University of Tsukuba and now I am working at Sada lab. as a postdoc. I am interested in skin stem cells and aging. I hope that my research will contribute to the understanding of skin aging and can be applied to prevent aging in the future. 

Yen Xuan Ngo

Ph.D. student

Hi, I come from Vietnam and currently be interested in oral epithelial stem cell and tissue engineering. I love research and mouse experiments because sciences are full of curiosity and imagination. I have chance to travel, meet and work with people from different cultures. What I would do if I have free time: I prefer reading books, travelling and exploring good food.