BBB Drug Transport technology

A novel technology loosens tight junction of BBB and supports drug transportation into brain.

Core Benefit

  • New BBB transportation technology of any CNS drug
  • Very simple strategy; loosening tight junction of vascular endothelial cell and opening a way between the cells to deliver drug into brain.

Background and Technology

Drug transportation technology at Blood Brain Barrier (BBB) is a key to effectively use a CNS drug. Some methods are developing; glucose/amino acid modified drug transfers via transporter of vascular endothelial cell, conjugate consisted of a drag and an antibody against transferrin/insulin receptor internalizes into the cell. However, drug development requests minimization of invasiveness and enhancement of effectivity of transportation and specificity.

Here, I propose a new technology to transport drug via tight junction of BBB. This technology loosens the junction consisted of membrane proteins of vascular endothelial cells and makes a gap to transport drug molecular into brain. In contrast to the existing transportation technologies that need two steps (internalization of drug from blood to endothelial cell and release of the drug from the cell into brain), our method enables direct transportation of drug at the BBB and does not require any modification of drug.

Data and Publication

  • In vitro transendothelial electrical resistance (TEER) measurement significantly showed our technology controls barrier of BBB.
  • Similar measurement reveals the loosening of BBB is not permanent but temporal. As time passes more than half a day, function of the junction returns to its original state.
  • In vivo experiment using cynomolgus monkey showed that our technology delivers tracer molecule from blood into cerebrospinal fluid.



Patent applied (not published yet)


Yoshiaki OKADA Associate Professor (Osaka University, Department of Molecular Medicine)


We are looking for a company to develop this technology using CNS drug delivery technology.

Product No: TP-00652

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