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Gene Function Analysis Lab [Research Institute for Microbial Diseases]
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A lab that explores the mechanisms of fertilization using genetically modified animals.

AboutAbout the lab
Uncovering the mechanisms of fertilization at the whole-animal level
The Gene Function Analysis Lab studies reproductive biology at the whole-animal level, while developing tools to investigate gene function using reproductive engineering and developmental engineering.
Genetically modified animals, whose genes have been artificially manipulated, now play an important role in disease research and basic biological research.
On fertilization, the lab uses knockout mice and transgenic mice to re-examine long-held views.
The lab carries out its research in collaboration with the Animal Resource Center for Infectious Diseases and others, and also supports the production of genetically modified animals through the NPO Developmental Engineering Research Society.
Key terms
- Knockout mouse
- A mouse in which a specific gene has been deleted. It is used to study the role of that gene
- Transgenic mouse
- A mouse into which a gene from outside has been introduced. In some examples, part of the sperm is made to fluoresce
- Zona pellucida
- An extracellular matrix made of glycoproteins that surrounds the egg. Sperm pass through it
NewsLab news
A doctoral student received the Best Poster Award at GRC2026 Mammalian Reproduction
A paper by former graduate students and others on male infertility in mice lacking TMC7 was published in Experimental Animals
Assistant Professor Masuko received the Society Award at the 45th Annual Meeting of the Japanese Society of Andrology
A doctoral student received the Annual Meeting Award for a poster at the 113th Annual Meeting of the Japanese Urological Association
A doctoral student received the Trainee Merit Award at the American Society of Andrology Annual Meeting
ResearchResearch themes
The lab uses genetically modified animals to study gene function at the whole-animal level. For mammalian fertilization, it tests long-held views using knockout mice and other models, aiming to describe the mechanism in the living animal.
View More ↗MembersFaculty
The members of the Gene Function Analysis Lab consist of faculty, project researchers, doctoral and undergraduate students, project technical staff, technical assistants, project administrative staff, and visiting researchers.As of 2026
- ProfessorMasahito Ikawa
- Associate ProfessorHaruhiko Miyata
- Assistant ProfessorChihiro Emori
- Assistant ProfessorYuki Hatanaka
- Assistant ProfessorDaisuke Masuko
- Project Assistant ProfessorRie Iida
- Project Assistant ProfessorShingo Tonai
- Project Assistant ProfessorYu Ishikawa
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images.
- Top image: “Sperm-egg” 作者不詳 / Public domain (cropped)
- Mechanisms of fertilization: “ICSI intracytoplasmic sperm injection” Dr Elena Kontogianni / CC0 (cropped)
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