World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
58
Citations
14625
World Ranking
13020
National Ranking
900

Seiji Okada 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 Seiji Okada 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: 413 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 848 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 949 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 840 scientists 207–216 publications: 733 scientists 217–226 publications: 708 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: 417 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: 196 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: 59 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: 343 publications — 85th percentile

85% of scientists in this discipline score the same or lower.

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

Seiji Okada 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 Seiji Okada sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 316 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 899 scientists 52–53 D-Index: 1,025 scientists 54–55 D-Index: 1,149 scientists 56–57 D-Index: 1,235 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,162 scientists 62–63 D-Index: 1,130 scientists 64–65 D-Index: 1,031 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 714 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: 71 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: 58 D-Index — 34th percentile

34% of scientists in this discipline score the same or lower.

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

Overview

Seiji Okada is affiliated with Kumamoto University in Japan and has contributed extensively to the fields of medicine and biochemistry, genetics, and molecular biology. Their research outputs mainly focus on molecular biology, surgery, oncology, immunology, and pathology and forensic medicine, reflecting a broad engagement across multiple biomedical disciplines.

Okada's work spans numerous main topics, including:

  • Cholangiocarcinoma and Gallbladder Cancer Studies
  • Peptidase Inhibition and Analysis
  • Cancer Mechanisms and Therapy
  • Lymphoma Diagnosis and Treatment
  • Immune Cell Function and Interaction
  • Cancer Cells and Metastasis
  • Orthopaedic implants and arthroplasty

The researcher has published in a variety of scientific venues, with frequent contributions to:

  • Scientific Reports
  • Anticancer Research
  • arXiv (Cornell University)
  • Human Cell
  • PeerJ

Some of Okada's recent published papers include:

  • Inflammation-driven senescence-associated secretory phenotype in cancer-associated fibroblasts enhances peritoneal dissemination, 2021, Cell Reports
  • Functional and genetic characterization of three cell lines derived from a single tumor of an Opisthorchis viverrini-associated cholangiocarcinoma patient, 2020, Human Cell
  • Targeting aberrant DNA hypermethylation as a driver of ATL leukemogenesis by using the new oral demethylating agent OR-2100, 2020, Blood
  • Establishment of bone marrow-derived M-CSF receptor-dependent self-renewing macrophages, 2020, Cell Death Discovery
  • Germinated Riceberry Rice Enhanced Protocatechuic Acid and Vanillic Acid to Suppress Melanogenesis through Cellular Oxidant-Related Tyrosinase Activity in B16 Cells, 2020, Antioxidants

Frequent collaborators in Okada's research include:

  • Ryusho Kariya
  • Kulthida Vaeteewoottacharn
  • Keisuke Uemura
  • Sopit Wongkham
  • Jutatip Panaampon

Okada's publication record features a strong focus on oncology, cancer cell biology, and immune-related mechanisms, contributing to a multidisciplinary approach to disease study that combines molecular insights with clinical relevance.

Best Publications

  • Hematopoietic stem cells differentiate into vascular cells that participate in the pathogenesis of atherosclerosis

    Masataka Sata;Akio Saiura;Atsushi Kunisato;Akihiro Tojo

  • In vivo and in vitro stem cell function of c-kit- and Sca-1-positive murine hematopoietic cells.

    Seiji Okada;Hiromitsu Nakauchi;Kazunari Nagayoshi;Shin Ichi Nishikawa

  • Disruption of the Bcl6 Gene Results in an Impaired Germinal Center Formation

    Tetsuya Fukuda;Takehiko Yoshida;Seiji Okada;Masahiko Hatano

  • Enrichment and characterization of murine hematopoietic stem cells that express c-kit molecule

    S Okada;H Nakauchi;K Nagayoshi;S Nishikawa

  • Bifurcation of osteoclasts and dendritic cells from common progenitors.

    Takeshi Miyamoto;Osamu Ohneda;Fumio Arai;Katsuya Iwamoto

  • Memory B Cells without Somatic Hypermutation Are Generated from Bcl6-Deficient B Cells

    Hirochika Toyama;Hirochika Toyama;Seiji Okada;Masahiko Hatano;Yoshimasa Takahashi

  • Role for Bcl-6 in the generation and maintenance of memory CD8 + T cells

    Hirohito Ichii;Hirohito Ichii;Akemi Sakamoto;Masahiko Hatano;Seiji Okada

  • IL-34 and M-CSF share the receptor Fms but are not identical in biological activity and signal activation

    T Chihara;S Suzu;R Hassan;N Chutiwitoonchai

  • Application of Highly Immunocompromised Mice for the Establishment of Patient-Derived Xenograft (PDX) Models.

    Seiji Okada;Kulthida Vaeteewoottacharn;Kulthida Vaeteewoottacharn;Ryusho Kariya

  • Transplanted hematopoietic stem cells from bone marrow differentiate into neural lineage cells and promote functional recovery after spinal cord injury in mice

    Shuhei Koshizuka;Seiji Okada;Akihiko Okawa;Masao Koda

  • DNA polymerase θ is preferentially expressed in lymphoid tissues and upregulated in human cancers

    Kiyoko Kawamura;Rumana Bahar;Mika Seimiya;Masako Chiyo

  • c- MYC overexpression with loss of Ink4a / Arf transforms bone marrow stromal cells into osteosarcoma accompanied by loss of adipogenesis

    T. Shimizu;T. Ishikawa;T. Ishikawa;E. Sugihara;S. Kuninaka

  • Circulating CD14(+) CD16(+) monocyte levels predict tissue invasive character of cholangiocarcinoma.

    C. Subimerb;S. Pinlaor;V. Lulitanond;N. Khuntikeo

  • Granulocyte colony-stimulating factor (G-CSF) mobilizes bone marrow-derived cells into injured spinal cord and promotes functional recovery after compression-induced spinal cord injury in mice.

    Masao Koda;Yutaka Nishio;Takahito Kamada;Yukio Someya

  • Tumor Cell–Derived Angiopoietin-like Protein ANGPTL2 Is a Critical Driver of Metastasis

    Motoyoshi Endo;Masahiro Nakano;Tsuyoshi Kadomatsu;Shigetomo Fukuhara

  • High-affinity monoclonal IgA regulates gut microbiota and prevents colitis in mice.

    Shinsaku Okai;Fumihito Usui;Shuhei Yokota;Yusaku Hori-I

  • Cross-reactivity between Thy-1 and a component of intermediate filaments demonstrated using a monoclonal antibody

    R. Dulbecco;M. Unger;M. Bologna;H. Battifora

  • The use of hemopoietic stem cells derived from human umbilical cord blood to promote restoration of spinal cord tissue and recovery of hindlimb function in adult rats

    Yutaka Nishio;Masao Koda;Takahito Kamada;Yukio Someya

  • Hematopoietic stem cell and marrow stromal cell for spinal cord injury in mice.

    Masao Koda;Seiji Okada;Toshinori Nakayama;Shuhei Koshizuka

  • Granulocyte colony-stimulating factor attenuates neuronal death and promotes functional recovery after spinal cord injury in mice.

    Yutaka Nishio;Masao Koda;Takahito Kamada;Yukio Someya

Frequent Co-Authors

Takeshi Tokuhisa
Takeshi Tokuhisa Chiba University
Harutaka Katano
Harutaka Katano National Institutes of Health
Toshio Suda
Toshio Suda National University of Singapore
Hiroaki Mitsuya
Hiroaki Mitsuya Kumamoto University
Hiromitsu Nakauchi
Hiromitsu Nakauchi Stanford University
Hideshige Moriya
Hideshige Moriya Chiba University
Kazuo Umezawa
Kazuo Umezawa Aichi Medical University
Yasusada Miura
Yasusada Miura Jichi Medical University
Hidetoshi Arima
Hidetoshi Arima Kumamoto University
Kunihiro Kuwajima
Kunihiro Kuwajima Tokyo University of Science

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