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Kasai Lab
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A lab that delivers drugs to affected areas using organic nanoparticles made by the reprecipitation method.
AboutAbout the lab
Dream big, make particles small.
The Kasai Lab studies organic nanomaterials for efficiently delivering drug components to affected areas.
Using its original fabrication method, the reprecipitation method, the lab makes extremely small nanoparticles from organic molecules.
The lab creates new nanomedicines targeting cancer and eye diseases, carrying out everything from compound synthesis to experiments using cells and animals.
The lab also works on producing high-value-added compounds from biomass.
Key terms
- Reprecipitation method
- A fabrication method original to this lab for making nanometer-sized particles from organic molecules
- Drug delivery system
- A mechanism for delivering the components of a drug to the place in the body where they are needed, in the amount needed
- Biomass
- Renewable resources derived from living organisms, such as plants
NewsLab news
Featured on the cover of Mol. Syst. Des. Eng.
A JSPS Research Fellow received an Excellent Poster Certificate at IPOPA2026
Prof. Kasai received the Session Organizer Awards at PIERS 2026
A master's student received a Presentation Award at the Tohoku University & Ewha Womans University Joint Symposium 2026
Featured on the cover of RSC Sustainable Energy & Fuels
ResearchResearch themes
The lab researches organic nanomaterials in order to build drug delivery systems that efficiently deliver pharmacologically active compounds to affected areas. Using its original fabrication method, the reprecipitation method, the lab aims to develop new nanomedicines for cancer and eye diseases, and carries out everything from compound synthesis to experiments using cells and animals.
*Illustrative imageNanomedicines born from reversing conventional thinking
Drug molecules are usually designed to dissolve easily in water. The lab deliberately designed molecules to be poorly compatible with water, and showed that its original reprecipitation method can produce "nanomedicines" with diameters of 100 nanometers or less.
*Illustrative imageEye drops that cross the corneal barrier
Eye drops are a convenient way to administer drugs, but most of the drug is repelled by the corneal barrier, and only a tiny amount reaches the inside of the eye. The lab is working on nanoparticle eye drops as a new type of eye drop that enters the eye more easily.
*Illustrative imageMaking the most of biomass
The drugs and materials used today are made from fossil resources, and resource depletion and environmental pollution are problems. The lab therefore focuses on naturally abundant biomass resources and researches ways to produce high-value-added compounds from them.
MembersFaculty
The members of the Kasai Lab consist of faculty, academic researchers, technical assistants, researchers, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorHitoshi Kasai
- Associate ProfessorKouki Oka
- Assistant ProfessorKeita Tanita
- Assistant ProfessorKohei Okubo
- Assistant ProfessorAki Shibata
- Assistant ProfessorTakahiro Ami
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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. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “EFluor Nanocrystal Vials” Travis.jennings / CC BY 3.0 (cropped)
- Nanomedicines born from reversing conventional thinking: “Fluorescence microscopy of the oral cancer cells” Korinna / CC BY 4.0 (cropped)
- Eye drops that cross the corneal barrier: “Corneal epithélium” Zhiguo.he / CC BY-SA 4.0 (cropped)
- Making the most of biomass: “Timber stack beside forest road - geograph.org.uk - 4900679” Trevor Littlewood / CC BY-SA 2.0 (cropped)
- Related lab (笘居研究室): “Critical carbon dioxide-3” Bernhard Kuemel、Regi51 / CC BY-SA 2.0 at (cropped)
- Related lab (田丸研究室): “Ausblick, Ethanolanlage, 2025 Dunaföldvár” Globetrotter19 / CC BY-SA 4.0 (cropped)
- Related lab (壹岐研究室): “Europium (III) Hydroxide under UV light” Zlynkyx/Leo S / CC BY-SA 4.0 (cropped)
- Related lab (吉岡研究室): “FLAKES” TOP PLASTIC / CC BY-SA 4.0 (cropped)
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