BDR researchers coming from diverse research fields are working together to achieve higher goals.

Seminars & Symposia

Seminars & Symposia

BDR hosts annual symposium and regular seminars inviting international scientists in life science.

Careers & Study

Careers & Study

BDR embraces people from diverse backgrounds, and strives to create an open and supportive setting for research.



BDR communicates the appeal and significance of our research to society through the use of various media and activities.



From research, events, people and everything in between, find out what’s going on at RIKEN BDR.

About Us

About Us

Exploring the scientific foundations of life through interdisciplinary approaches to address society’s problems.

Photo of Team leder, Hidefumi Mukai

Team Leader
Hidefumi Mukai Ph.D.

Laboratory for Molecular Delivery and Imaging Technology

[Closed Mar. 2023]


Please replace [at] with @.

Targeting the control molecules to the specific organs and their target cells by elucidation of better dynamics in the whole body.

The objective of our team is to develop evaluation and verification technologies of the function of control molecules in situ and in vivo, and to develop an efficient Drug Delivery System (DDS).

Research Theme

  • Development of bacterial machines for cancer therapy
  • Biomacromolecular PET probes: ADME studies and imaging biomarker development
  • Application of inorganic- and bio-nanoparticles to DDS

Selected Publications

Mukai H, Watanabe Y.
Review: PET imaging with macro- and middle-sized molecular probes.
Nuclear medicine and biology 92, 156-170 (2021) doi: 10.1016/j.nucmedbio.2020.06.007

Nomura S, Takahashi M, Hashiba Kato A, et al.
Biosorption-based 64Cu-labeling of bacteria for pharmacokinetic positron-emission tomography.
International Journal of Pharmaceutics 590, 119950 (2020) doi: 10.1016/j.ijpharm.2020.119950

Sakai K, Passioura T, Sato H, et al.
Macrocyclic peptide-based inhibition and imaging of hepatocyte growth factor.
Nature Chemical Biology 15, 598-606 (2019) doi: 10.1038/s41589-019-0285-7

Ren Q, Mohri K, Warashina S, et al.
Improved immuno-PET imaging of HER2-positive tumors in mice: Urokinase injection-triggered clearance enhancement of 64Cu-trastuzumab.
Molecular Pharmaceutics 16(3), 1065-1073 (2019) doi: 10.1021/acs.molpharmaceut.8b01052

Mukai H, Hatanaka K, Yagi N, et al.
Pharmacokinetic evaluation of liposomal nanoparticle-encapsulated nucleic acid drug: A combined study of dynamic PET imaging and LC/MS/MS analysis.
Journal of Controlled Release 294, 185-194 (2019) doi: 10.1016/j.jconrel.2018.12.006

Nakamoto Y, Pradipta AR, Mukai H, et al.
Expanding the applicability of the metal labeling of biomolecules by the RIKEN click reaction: A case study with Gallium‐68 positron emission tomography.
Chembiochem 19, 2055-2060 (2018) doi: 10.1002/cbic.201800335

Matsumura K, Zouda M, Wada Y, et al.
Urokinase injection-triggered clearance enhancement of a 4-arm PEG-conjugated 64Cu-bombesin analog tetramer: A novel approach for the improvement of PET imaging contrast.
International Journal of Pharmaceutics 545, 206-214 (2018) doi: 10.1016/j.ijpharm.2018.05.014

Mukai H, Takahashi M, Watanabe Y.
Potential usefulness of Brevibacillus for bacterial cancer therapy: intratumoral provision of tumor necrosis factor- α and anticancer effects.
Cancer Gene Therapy 25, 47-57 (2018) doi: 10.1038/s41417-017-0009-7

Otani Y, Kawakami S, Mukai H, et al.
Long-term in vivo gene expression in mouse kidney using φ31 integrase and electroporation.
Journal of Drug Targeting 23, 427-435 (2015) doi: 10.3109/1061186X.2014.1002788

Mukai H, Ozaki D, Cui YL, et al.
Quantitative evaluation of the improvement in the pharmacokinetics of a nucleic acid drug delivery system by dynamic PET imaging with 18 F-incorporated oligodeoxynucleotides.
Journal of Controlled Release 180, 92-99 (2014) doi: 10.1016/j.jconrel.2014.02.014

Mukai H, Wada Y, Watanabe Y.
The synthesis of 64 Cu-chelated porphyrin photosensitizers and their tumor-targeting peptide conjugates for the evaluation of target cell uptake and PET image-based pharmacokinetics of targeted photodynamic therapy agents.
Annals of Nuclear Medicine 27, 625-639 (2013) doi: 10.1007/s12149-013-0728-2

Mukai H, Kawakami S, Takahashi H, et al.
Key physiological phenomena governing transgene expression based on tissue pressure-mediated transfection in mice.
Biological and Pharmaceutical Bulletin 33, 1627-1632 (2010) doi: 10.1248/bpb.33.1627

Mukai H, Kawakami S, Kamiya Y, et al.
Pressure-mediated transfection of murine spleen and liver.
Human Gene Therapy 20, 1157-1167 (2009) doi: 10.1089/hum.2008.213

Ohyama J, Hitomi Y, Higuchi Y, et al.
One-Phase Synthesis of Small Gold Nanoparticles Coated by a Horizontal Porphyrin Monolayer.
Chemical Communications 47, 6300-6302 (2008) doi: 10.1039/b815100h


Photo of Team leder, Hidefumi Mukai

Team LeaderHidefumi Mukai

  • hmukai[at]riken.jp
    (Please replace [at] with @)

Research ScientistKohta Mohri

  • kota.mori[at]riken.jp

Research ScientistShota Warashina

Postdoctoral ResearcherShoko Nomura

Research AssociateMaiko Takahashi

  • mtakahashi[at]riken.jp

Temporary StaffingNaomi Fujie

Assistant*Yoko Nagatomo

(*:concurrent / Please replace [at] with @.)