Ko Okumura

59.5k total citations · 11 hit papers
848 papers, 47.4k citations indexed

About

Ko Okumura is a scholar working on Immunology, Molecular Biology and Immunology and Allergy. According to data from OpenAlex, Ko Okumura has authored 848 papers receiving a total of 47.4k indexed citations (citations by other indexed papers that have themselves been cited), including 537 papers in Immunology, 204 papers in Molecular Biology and 139 papers in Immunology and Allergy. Recurrent topics in Ko Okumura's work include Immune Cell Function and Interaction (256 papers), T-cell and B-cell Immunology (197 papers) and Immunotherapy and Immune Responses (135 papers). Ko Okumura is often cited by papers focused on Immune Cell Function and Interaction (256 papers), T-cell and B-cell Immunology (197 papers) and Immunotherapy and Immune Responses (135 papers). Ko Okumura collaborates with scholars based in Japan, United States and China. Ko Okumura's co-authors include Hideo Yagita∥, Hideoki Ogawa, Kazuyoshi Takeda, Nobuhiko Kayagaki, Tomio Tada, Miyuki Azuma, Hisaya Akiba, Hiroko Ushio, Hiroyasu Nakano and Atsuhito Nakao and has published in prestigious journals such as Nature, Science and New England Journal of Medicine.

In The Last Decade

Ko Okumura

839 papers receiving 46.0k citations

Hit Papers

Expression of Programmed Death 1 Ligands by ... 1980 2026 1995 2010 2002 1993 1995 1992 2001 250 500 750
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Expression of Programmed Death 1 Ligands by Murine T Cells and APC
    2002 798 citations Hisaya Akiba, Ko Okumura et al. The Journal of Immunology profile →
  2. B70 antigen is a second ligand for CTLA-4 and CD28
    1993 780 citations Miyuki Azuma, Hideo Yagita∥ et al. profile →
  3. Metalloproteinase-mediated release of human Fas ligand.
    1995 733 citations Ko Okumura, Hideo Yagita∥ et al. The Journal of Experimental Medicine profile →
  4. Specific Acceptance of Cardiac Allograft After Treatment with Antibodies to ICAM-1 and LFA-1
    1992 617 citations Hideo Yagita∥, Ko Okumura et al. profile →
  5. Involvement of tumor necrosis factor-related apoptosis-inducing ligand in surveillance of tumor metastasis by liver natural killer cells
    2001 595 citations Kazuyoshi Takeda, Yoshihiro Hayakawa et al. profile →
  6. IL-33 is a crucial amplifier of innate rather than acquired immunity
    2010 534 citations Keisuke Oboki, Tatsukuni Ohno et al. Proceedings of the National Academy of Sciences profile →
  7. The Natural Killer T (NKT) Cell Ligand α-Galactosylceramide Demonstrates Its Immunopotentiating Effect by Inducing Interleukin (IL)-12 Production by Dendritic Cells and IL-12 Receptor Expression on NKT Cells
    1999 527 citations Kazuyoshi Takeda, Ko Okumura et al. The Journal of Experimental Medicine profile →
  8. The tissue distribution of the B7-2 costimulator in mice: abundant expression on dendritic cells in situ and during maturation in vitro.
    1994 501 citations Miyuki Azuma, Ko Okumura et al. The Journal of Experimental Medicine profile →
  9. A glycolipid on the surface of mouse natural killer cells
    1980 466 citations Ko Okumura et al. profile →
  10. In vivo effects of anti-asialo GM1. I. Reduction of NK activity and enhancement of transplanted tumor growth in nude mice.
    1981 373 citations Ko Okumura et al. The Journal of Immunology profile →
  11. A pilot study of operational tolerance with a regulatory T‐cell‐based cell therapy in living donor liver transplantation
    2016 323 citations Ko Okumura et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Ko Okumura Japan 113 28.8k 12.6k 7.2k 5.2k 4.7k 848 47.4k
Kouji Matsushima Japan 116 25.6k 0.9× 11.8k 0.9× 12.9k 1.8× 5.1k 1.0× 4.4k 0.9× 562 49.2k
Joost J. Oppenheim United States 126 28.9k 1.0× 15.2k 1.2× 11.5k 1.6× 4.8k 0.9× 4.0k 0.9× 451 54.1k
Steven L. Kunkel United States 113 21.6k 0.8× 9.7k 0.8× 9.8k 1.4× 4.6k 0.9× 5.3k 1.1× 528 48.1k
Andrew D. Luster United States 120 29.2k 1.0× 10.8k 0.9× 14.2k 2.0× 4.6k 0.9× 7.6k 1.6× 342 51.2k
Robert L. Coffman United States 104 39.5k 1.4× 8.8k 0.7× 6.6k 0.9× 4.5k 0.9× 7.0k 1.5× 256 60.9k
William E. Paul United States 98 30.2k 1.1× 8.2k 0.6× 6.1k 0.9× 2.6k 0.5× 4.7k 1.0× 344 42.5k
Marc Feldmann United Kingdom 114 23.9k 0.8× 11.3k 0.9× 8.0k 1.1× 3.3k 0.6× 2.6k 0.5× 556 53.8k
Charles R. Mackay Australia 104 25.5k 0.9× 12.5k 1.0× 9.1k 1.3× 4.0k 0.8× 7.8k 1.6× 255 47.0k
Eugene C. Butcher United States 126 31.9k 1.1× 12.4k 1.0× 10.2k 1.4× 16.0k 3.1× 3.4k 0.7× 338 53.4k
Yoichiro Iwakura Japan 126 32.8k 1.1× 18.2k 1.4× 7.8k 1.1× 2.0k 0.4× 5.6k 1.2× 694 61.6k

Countries citing papers authored by Ko Okumura

Since Specialization
Citations

This map shows the geographic impact of Ko Okumura's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ko Okumura with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ko Okumura more than expected).

Fields of papers citing papers by Ko Okumura

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ko Okumura. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ko Okumura. The network helps show where Ko Okumura may publish in the future.

Co-authorship network of co-authors of Ko Okumura

This figure shows the co-authorship network connecting the top 25 collaborators of Ko Okumura. A scholar is included among the top collaborators of Ko Okumura based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ko Okumura. Ko Okumura is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Takeda, Kazuyoshi, Masaki Harada, Yuko Kojima, et al.. (2024). CD8+ T cell-mediated rejection of allogenic human-induced pluripotent stem cell-derived cardiomyocyte sheets in human PBMC-transferred NOG MHC double knockout mice. The Journal of Heart and Lung Transplantation. 43(8). 1348–1357. 1 indexed citations
2.
Nakajima, Akihito, Tomoyoshi Shibuya, Tsutomu Fujimura, et al.. (2024). Oxidative Stress-Responsive Apoptosis Inducing Protein (ORAIP) Plays a Critical Role in Dextran Sulfate Sodium-Induced Murine Model of Ulcerative Colitis. Medicina. 60(4). 539–539.
3.
Nakamura, Yuki, Nobuhiro Nakano, Kayoko Ishimaru, et al.. (2013). Circadian regulation of allergic reactions by the mast cell clock in mice. Journal of Allergy and Clinical Immunology. 133(2). 568–575.e12. 66 indexed citations
4.
NAKAYAMA, M., Kenji Kurokawa, Kyohei Nakamura, et al.. (2012). Inhibitory Receptor Paired Ig-like Receptor B Is Exploited by Staphylococcus aureus for Virulence. The Journal of Immunology. 189(12). 5903–5911. 40 indexed citations
5.
Hasegawa, Mizuho, Beate Heissig, Koichi Hattori, et al.. (2011). Tumor Necrosis Factor Receptor-associated Factor (TRAF) 2 Controls Homeostasis of the Colon to Prevent Spontaneous Development of Murine Inflammatory Bowel Disease. Journal of Biological Chemistry. 286(20). 17879–17888. 32 indexed citations
6.
Oboki, Keisuke, Tatsukuni Ohno, Naoki Kajiwara, et al.. (2010). IL-33 is a crucial amplifier of innate rather than acquired immunity. Proceedings of the National Academy of Sciences. 107(43). 18581–18586. 534 indexed citations breakdown →
7.
Nishiyama, Chiharu, Shunsuke Kanada, Nobuhiro Nakano, et al.. (2009). Involvement of PU.1 in the transcriptional regulation of TNF-α. Biochemical and Biophysical Research Communications. 388(1). 102–106. 23 indexed citations
8.
Sakurai, Daisuke, Hidenori Hase, Yumiko Kanno, et al.. (2006). TACI regulates IgA production by APRIL in collaboration with HSPG. Blood. 109(7). 2961–2967. 97 indexed citations
9.
Kimura, Hiroko, et al.. (2005). Beneficial Effects of the Nishino Breathing Method on Immune Activity and Stress Level. The Journal of Alternative and Complementary Medicine. 11(2). 285–291. 16 indexed citations
10.
Takeda, Kazuyoshi, Noriko Yamaguchi, Hisaya Akiba, et al.. (2004). Induction of Tumor-specific T Cell Immunity by Anti-DR5 Antibody Therapy. The Journal of Experimental Medicine. 199(4). 437–448. 165 indexed citations
11.
Tanaka, Yoshimi, Yoshihiro Yamazaki, & Ko Okumura. (2003). Bouncing gel balls. arXiv (Cornell University). 1 indexed citations
12.
Kojima, Yuko, et al.. (2002). Localization of Fas ligand in cytoplasmic granules of CD8+ cytotoxic T lymphocytes and natural killer cells: participation of Fas ligand in granule exocytosis model of cytotoxicity. Biochemical and Biophysical Research Communications. 296(2). 328–336. 37 indexed citations
13.
Nakao, Atsuhito, Hironori Sagara, Yasuhiro Setoguchi, et al.. (2002). Expression of Smad7 in bronchial epithelial cells is inversely correlated to basement membrane thickness and airway hyperresponsiveness in patients with asthma. Journal of Allergy and Clinical Immunology. 110(6). 873–878. 52 indexed citations
14.
Kawamura, Toshihiko, Kazuyoshi Takeda, Sanjeev Kumar Mendiratta, et al.. (1998). Cutting Edge: Critical Role of NK1+ T Cells in IL-12-Induced Immune Responses In Vivo. The Journal of Immunology. 160(1). 16–19. 126 indexed citations
15.
Enomoto, Ayako, Kazunori Kato, Hideo Yagita∥, & Ko Okumura. (1997). Adoptive transfer of cytotoxic T lymphocytes induced by CD86-transfected tumor cells suppresses multi-organ metastases of C1300 neuroblastoma in mice. Cancer Immunology Immunotherapy. 44(4). 204–210. 14 indexed citations
16.
Kezuka, Takeshi, Junichi Sakai, Masaru Takeuchi, et al.. (1996). Peptide-mediated suppression of experimental autoimmune uveoretinitis in mice: development of a peptide vaccine. International Immunology. 8(8). 1229–1235. 15 indexed citations
17.
Matsumura, Ryutaro, M Kagami, Hisao Tomioka, et al.. (1996). Expression of ductal Fas antigen in sialoadenitis of Sjögren's syndrome.. PubMed. 14(3). 309–11. 21 indexed citations
18.
Nitta, Taizo, Makoto Hishii, Kiyoshi Sato, & Ko Okumura. (1994). Selective expression of interleukin-10 gene within glioblastoma multiforme. Brain Research. 649(1-2). 122–128. 83 indexed citations
19.
Hirano, T, et al.. (1994). Construction of a monoclonal antibody against Igh-7b. Immunogenetics. 40(4). 296–9. 1 indexed citations
20.
Kobata, Tetsuji, Yoichi Shinkai, Akemi Koyanagi, et al.. (1990). Thy-1 -positive dendritic epidermal cells contain a killer protein perforin. International Immunology. 2(11). 1113–1116. 19 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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