Development of dds using hollow bio-nanoparticles and their commercialization

Akihiko Kondo, Shun ichi Kuroda, Katsuyuki Tanizawa, Masaharu Seno, Masakazu Ueda

Research output: Contribution to journalArticlepeer-review


We succeeded overproduction of the HBV envelope L particles with an approximate average particle size of 80 nm in yeast cells. Because the L particle is an empty bionanoparticles containing no viral DNA, it can be used as a safe and efficient carrier for human liver-specific delivery (pinpoint delivery) of drug and gene. In addition, genetically engineered L particles that are able to target to various organs were constructed by deleting the hepatocyte binding domain of L protein (pre-S region) and displaying targeting peptide or protein ligands. Therefore, bionanoparticles are a novel nano-carrier applicable to the broad range of pinpoint DDS.

Original languageEnglish
Pages (from-to)435-443
Number of pages9
JournalDrug Delivery System
Issue number4
Publication statusPublished - 2006


  • gene therapy
  • hepatitis B virus
  • nanoparticle
  • pinpoint drug delivery
  • targeting

ASJC Scopus subject areas

  • Pharmaceutical Science


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