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Keiji Itaka

D-Index & Metrics

Biology and Biochemistry

D-Index
53
Citations
9445
World Ranking
16231
National Ranking
1163

Keiji Itaka publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Keiji Itaka sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 115 publications — 10th percentile

10% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Keiji Itaka D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Keiji Itaka sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 53 D-Index — 19th percentile

19% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

Keiji Itaka is affiliated with Tokyo Medical and Dental University in Japan. Their research primarily spans the fields of biochemistry, genetics, molecular biology, and medicine, with a focus on molecular biology, genetics, rheumatology, biomedical engineering, and surgery as subfields.

The key research topics addressed in their work include RNA interference and gene delivery, osteoarthritis treatment and mechanisms, RNA and protein synthesis mechanisms, virus-based gene therapy research, advanced biosensing and bioanalysis techniques, RNA research and splicing, and ultrasound and hyperthermia applications.

Frequent co-authors collaborating with Keiji Itaka are Hideyuki Nakanishi, Yuta Fukushima, Xuan Du, Yuki Terai, and Kazunori Kataoka.

Their publications frequently appear in journals such as Drug Delivery System, Pharmaceutics, ACS Synthetic Biology, Nanomaterials, and Journal of Controlled Release.

Selected recent papers include:

  • Treatment of ischemic neuronal death by introducing brain-derived neurotrophic factor mRNA using polyplex nanomicelle (2021, Biomaterials)
  • Brain Dp140 alters glutamatergic transmission and social behaviour in the mdx52 mouse model of Duchenne muscular dystrophy (2022, Progress in Neurobiology)
  • Enhancement of bone regeneration by coadministration of angiogenic and osteogenic factors using messenger RNA (2023, Inflammation and Regeneration)
  • Raman spectroscopic insight into osteoarthritic cartilage regeneration by mRNA therapeutics encoding cartilage-anabolic transcription factor Runx1 (2022, Materials Today Bio)
  • Efficient Messenger RNA Delivery to the Kidney Using Renal Pelvis Injection in Mice (2021, Pharmaceutics)

Best Publications

  • PEG-Detachable Polyplex Micelles Based on Disulfide-Linked Block Catiomers as Bioresponsive Nonviral Gene Vectors

    Seiji Takae;Kanjiro Miyata;Makoto Oba;Takehiko Ishii

  • 3D spheroid culture system on micropatterned substrates for improved differentiation efficiency of multipotent mesenchymal stem cells

    Wenjie Wang;Keiji Itaka;Shinsuke Ohba;Nobuhiro Nishiyama

  • Light-induced gene transfer from packaged DNA enveloped in a dendrimeric photosensitizer

    Nobuhiro Nishiyama;Aya Iriyama;Woo Dong Jang;Kanjiro Miyata

  • Polyion complex micelles from plasmid DNA and poly(ethylene glycol)-poly(L-lysine) block copolymer as serum-tolerable polyplex system: physicochemical properties of micelles relevant to gene transfection efficiency.

    Keiji Itaka;Kyosuke Yamauchi;Atsushi Harada;Kozo Nakamura

  • Glycaemic control boosts glucosylated nanocarrier crossing the BBB into the brain

    Y. Anraku;H. Kuwahara;Y. Fukusato;A. Mizoguchi

  • In situ single cell observation by fluorescence resonance energy transfer reveals fast intra‐cytoplasmic delivery and easy release of plasmid DNA complexed with linear polyethylenimine

    Keiji Itaka;Atsushi Harada;Yuichi Yamasaki;Kozo Nakamura

  • Biodegradable polyamino acid-based polycations as safe and effective gene carrier minimizing cumulative toxicity.

    Keiji Itaka;Takehiko Ishii;Yoko Hasegawa;Kazunori Kataoka

  • Odd-even effect of repeating aminoethylene units in the side chain of N-substituted polyaspartamides on gene transfection profiles.

    Hirokuni Uchida;Kanjiro Miyata;Makoto Oba;Takehiko Ishii

  • A PEG-based biocompatible block catiomer with high buffering capacity for the construction of polyplex micelles showing efficient gene transfer toward primary cells.

    Naoki Kanayama;Shigeto Fukushima;Nobuhiro Nishiyama;Keiji Itaka

  • Efficient delivery of bioactive antibodies into the cytoplasm of living cells by charge-conversional polyion complex micelles

    Yan Lee;Takehiko Ishii;Hyun Jin Kim;Nobuhiro Nishiyama

  • Supramolecular nanocarrier of siRNA from PEG-based block catiomer carrying diamine side chain with distinctive pKa directed to enhance intracellular gene silencing.

    Keiji Itaka;Naoki Kanayama;Nobuhiro Nishiyama;Woo Dong Jang

  • Recent development of nonviral gene delivery systems with virus-like structures and mechanisms.

    Keiji Itaka;Kazunori Kataoka

  • Lactose-conjugated polyion complex micelles incorporating plasmid DNA as a targetable gene vector system: their preparation and gene transfecting efficiency against cultured HepG2 cells.

    Daisuke Wakebayashi;Nobuhiro Nishiyama;Yuichi Yamasaki;Keiji Itaka

  • Bone morphogenetic protein 2-induced osteoblast differentiation requires Smad-mediated down-regulation of Cdk6.

    Toru Ogasawara;Hiroshi Kawaguchi;Shigeki Jinno;Kazuto Hoshi

  • Polyplex micelles with cyclic RGD peptide ligands and disulfide cross-links directing to the enhanced transfection via controlled intracellular trafficking.

    Makoto Oba;Kazuhiro Aoyagi;Kanjiro Miyata;Yu Matsumoto

  • Polyunsaturated fatty acids selectively suppress sterol regulatory element-binding protein-1 through proteolytic processing and autoloop regulatory circuit

    Yoshinori Takeuchi;Naoya Yahagi;Yoshihiko Izumida;Makiko Nishi

  • Modulated Protonation of Side Chain Aminoethylene Repeats in N-Substituted Polyaspartamides Promotes mRNA Transfection

    Hirokuni Uchida;Keiji Itaka;Takahiro Nomoto;Takehiko Ishii

  • Bone regeneration by regulated in vivo gene transfer using biocompatible polyplex nanomicelles

    Keiji Itaka;Shinsuke Ohba;Kanjiro Miyata;Hiroshi Kawaguchi

  • Evaluation by fluorescence resonance energy transfer of the stability of nonviral gene delivery vectors under physiological conditions.

    Keiji Itaka;Atsushi Harada;Kozo Nakamura;Hiroshi Kawaguchi

  • Systemic delivery of messenger RNA for the treatment of pancreatic cancer using polyplex nanomicelles with a cholesterol moiety

    Satoshi Uchida;Hiroaki Kinoh;Takehiko Ishii;Akitsugu Matsui

Frequent Co-Authors

Kazunori Kataoka
Kazunori Kataoka University of Tokyo
Nobuhiro Nishiyama
Nobuhiro Nishiyama Tokyo Institute of Technology
Kanjiro Miyata
Kanjiro Miyata University of Tokyo
Ung-il Chung
Ung-il Chung University of Tokyo
Kozo Nakamura
Kozo Nakamura Shinshu University
Hiroshi Kawaguchi
Hiroshi Kawaguchi University of Tokyo
Woo Dong Jang
Woo Dong Jang Yonsei University
Yukio Nagasaki
Yukio Nagasaki University of Tsukuba
Atsushi Harada
Atsushi Harada Osaka Metropolitan University
Naoya Yahagi
Naoya Yahagi University of Tsukuba

External Links

Personal website of Keiji Itaka

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Related Online Degrees & Career Pathways

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By enrolling in these flexible online degree options, you can tailor your educational journey to match your interests and meet both academic and career ambitions in the life sciences.

Best Scientists Citing Keiji Itaka

Kazunori Kataoka

Kazunori Kataoka

University of Tokyo

Publications: 171

Nobuhiro Nishiyama

Nobuhiro Nishiyama

Tokyo Institute of Technology

Publications: 95

Ernst Wagner

Ernst Wagner

Ludwig-Maximilians-Universität München

Publications: 81

Kanjiro Miyata

Kanjiro Miyata

University of Tokyo

Publications: 74

Horacio Cabral

Horacio Cabral

University of Tokyo

Publications: 43

Yukio Nagasaki

Yukio Nagasaki

University of Tsukuba

Publications: 31

Ung-il Chung

Ung-il Chung

University of Tokyo

Publications: 28

Hideyoshi Harashima

Hideyoshi Harashima

Hokkaido University

Publications: 28

Woo Dong Jang

Woo Dong Jang

Yonsei University

Publications: 25

Alexander V. Kabanov

Alexander V. Kabanov

University of North Carolina at Chapel Hill

Publications: 23

Robert Langer

Robert Langer

MIT

Publications: 22

Vladimir P. Torchilin

Vladimir P. Torchilin

Northeastern University

Publications: 20

Omid C. Farokhzad

Omid C. Farokhzad

Harvard Medical School

Publications: 19

Zhongwei Gu

Zhongwei Gu

Sichuan University

Publications: 19

Sung Wan Kim

Sung Wan Kim

University of Utah

Publications: 18

Xuesi Chen

Xuesi Chen

Chinese Academy of Sciences

Publications: 18

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Alexander S. Mukasyan

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