Kei Ohnuma

4.2k total citations
104 papers, 3.4k citations indexed

About

Kei Ohnuma is a scholar working on Oncology, Molecular Biology and Cancer Research. According to data from OpenAlex, Kei Ohnuma has authored 104 papers receiving a total of 3.4k indexed citations (citations by other indexed papers that have themselves been cited), including 71 papers in Oncology, 35 papers in Molecular Biology and 22 papers in Cancer Research. Recurrent topics in Kei Ohnuma's work include Peptidase Inhibition and Analysis (61 papers), Neuropeptides and Animal Physiology (19 papers) and Protease and Inhibitor Mechanisms (17 papers). Kei Ohnuma is often cited by papers focused on Peptidase Inhibition and Analysis (61 papers), Neuropeptides and Animal Physiology (19 papers) and Protease and Inhibitor Mechanisms (17 papers). Kei Ohnuma collaborates with scholars based in Japan, United States and France. Kei Ohnuma's co-authors include Chikao Morimoto, Nam H. Dang, Satoshi Iwata, Ryo Hatano, Hirotoshi Tanaka, Osamu Hosono, Tadanori Yamochi, Masahiko Uchiyama, Taketo Yamada and Seiji Kobayashi and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and Journal of Clinical Oncology.

In The Last Decade

Kei Ohnuma

100 papers receiving 3.4k citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Kei Ohnuma 1.6k 1.0k 736 707 705 104 3.4k
Libero Lauriola 637 0.4× 1.1k 1.0× 407 0.6× 801 1.1× 126 0.2× 179 4.3k
Shuan Shian Huang 669 0.4× 2.4k 2.4× 323 0.4× 608 0.9× 152 0.2× 75 3.9k
Sara M. Bodner 2.1k 1.3× 1.6k 1.6× 915 1.2× 296 0.4× 78 0.1× 27 3.9k
Salvatore Travali 904 0.6× 1.8k 1.8× 269 0.4× 170 0.2× 250 0.4× 96 2.9k
Harald Lahm 839 0.5× 2.3k 2.3× 894 1.2× 1.1k 1.6× 72 0.1× 106 4.2k
Noreen Luetteke 1.5k 0.9× 1.9k 1.9× 961 1.3× 278 0.4× 97 0.1× 34 4.0k
J. David Becherer 1.4k 0.9× 2.0k 2.0× 1.1k 1.6× 91 0.1× 273 0.4× 51 4.4k
Mathias Gugger 1.1k 0.7× 1.8k 1.8× 278 0.4× 96 0.1× 469 0.7× 77 3.8k
Jaume Mora 1.2k 0.8× 3.1k 3.0× 394 0.5× 200 0.3× 136 0.2× 216 5.5k
Susan W. Sunnarborg 1.1k 0.7× 1.4k 1.4× 500 0.7× 114 0.2× 150 0.2× 23 3.1k

Countries citing papers authored by Kei Ohnuma

Since Specialization
Citations

This map shows the geographic impact of Kei Ohnuma'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 Kei Ohnuma with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kei Ohnuma more than expected).

Fields of papers citing papers by Kei Ohnuma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kei Ohnuma. 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 Kei Ohnuma. The network helps show where Kei Ohnuma may publish in the future.

Co-authorship network of co-authors of Kei Ohnuma

This figure shows the co-authorship network connecting the top 25 collaborators of Kei Ohnuma. A scholar is included among the top collaborators of Kei Ohnuma 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 Kei Ohnuma. Kei Ohnuma 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.
Matsumura, Takeshi, Takafumi Senokuchi, Hiroyuki Motoshima, et al.. (2025). Hematopoietic dipeptidyl peptidase-4 deficiency promotes M2 macrophage polarization and attenuates atherosclerosis. Biochemical and Biophysical Research Communications. 794. 153037–153037.
2.
Kawasaki, Takeshi, Shunichi Sato, Koichiro Tatsumi, et al.. (2024). Functional Roles of CD26/DPP4 in Bleomycin-Induced Pulmonary Hypertension Associated with Interstitial Lung Disease. International Journal of Molecular Sciences. 25(2). 748–748. 6 indexed citations
3.
Hatano, Ryo, Hayato Nakamura, Ayako Yamamoto, et al.. (2024). An abnormal increase in CD26(−)CD28(−) cytotoxic effector CD4 and CD8 T cell populations in patients with systemic lupus erythematosus. International Immunology. 37(3). 153–172.
4.
Sato, Shunichi, Takeshi Kawasaki, Ryo Hatano, et al.. (2024). Functional roles of CD26/DPP4 in lipopolysaccharide-induced lung injury. American Journal of Physiology-Lung Cellular and Molecular Physiology. 326(5). L562–L573. 3 indexed citations
5.
Kawasaki, Takeshi, Yoshitoshi Kasuya, Ryo Hatano, et al.. (2023). Functional roles of CD26/DPP4 in bleomycin‐induced pulmonary fibrosis. Physiological Reports. 11(6). e15645–e15645. 6 indexed citations
6.
Itoh, Takumi, Ryo Hatano, Yoshiya Horimoto, et al.. (2021). IL-26 mediates epidermal growth factor receptor-tyrosine kinase inhibitor resistance through endoplasmic reticulum stress signaling pathway in triple-negative breast cancer cells. Cell Death and Disease. 12(6). 520–520. 16 indexed citations
7.
Komiya, Eriko, Mitsutoshi Tominaga, Ryo Hatano, et al.. (2021). Peripheral endomorphins drive mechanical alloknesis under the enzymatic control of CD26/DPPIV. Journal of Allergy and Clinical Immunology. 149(3). 1085–1096. 12 indexed citations
8.
Itoh, Takumi, Ryo Hatano, Eriko Komiya, et al.. (2018). Biological Effects of IL-26 on T Cell–Mediated Skin Inflammation, Including Psoriasis. Journal of Investigative Dermatology. 139(4). 878–889. 52 indexed citations
9.
Ohnuma, Kei, et al.. (2017). Current and Emerging Therapy for Malignant Pleural Mesothelioma: Focus on CD26/Dipeptidyl Peptidase IV as a Therapeutic Target.. Current Medicinal Chemistry. 13(2). 76–88. 2 indexed citations
10.
Aoe, Keisuke, Vishwa Jeet Amatya, Nobukazu Fujimoto, et al.. (2012). CD26 Overexpression Is Associated with Prolonged Survival and Enhanced Chemosensitivity in Malignant Pleural Mesothelioma. Clinical Cancer Research. 18(5). 1447–1456. 49 indexed citations
11.
Ohnuma, Kei, et al.. (2009). Blockade of CD26-mediated T cell costimulation with soluble caveolin-1-Ig fusion protein induces anergy in CD4+T cells. Biochemical and Biophysical Research Communications. 386(2). 327–332. 26 indexed citations
12.
Ohnuma, Kei, Osamu Hosono, Hiroshi Kawasaki, et al.. (2008). An adult case of Henoch-Schönlein purpura complicating common peroneal nerve mononeuropathy. Modern Rheumatology. 19(1). 73–79. 4 indexed citations
13.
Thompson, Michael D., Kei Ohnuma, Masako Abe, Chikao Morimoto, & Nam H. Dang. (2007). CD26/Dipeptidyl Peptidase IV as a Novel Therapeutic Target for Cancer and Immune Disorders. Mini-Reviews in Medicinal Chemistry. 7(3). 253–273. 48 indexed citations
14.
Nakamura, Hiroshi, Yuichi Makino, Kensaku Okamoto, et al.. (2005). TCR Engagement Increases Hypoxia-Inducible Factor-1α Protein Synthesis via Rapamycin-Sensitive Pathway under Hypoxic Conditions in Human Peripheral T Cells. The Journal of Immunology. 174(12). 7592–7599. 132 indexed citations
15.
Makino, Yuichi, Hiroshi Nakamura, Eiji Ikeda, et al.. (2003). Hypoxia-Inducible Factor Regulates Survival of Antigen Receptor-Driven T Cells. The Journal of Immunology. 171(12). 6534–6540. 117 indexed citations
16.
Ishii, Tomonori, Kei Ohnuma, Akikazu Murakami, et al.. (2003). SS-A/Ro52, an Autoantigen Involved in CD28-Mediated IL-2 Production. The Journal of Immunology. 170(7). 3653–3661. 44 indexed citations
17.
Isoyama, Keiichi, Kei Ohnuma, Koji Kato, et al.. (2003). Cord Blood Transplantation from Unrelated Donors: A Preliminary Report from the Japanese Cord Blood Bank Network. Leukemia & lymphoma. 44(3). 429–438. 15 indexed citations
18.
Sato, Kazuya, Ugur Aytac, Toshiko Yamochi, et al.. (2003). CD26/dipeptidyl peptidase IV enhances expression of topoisomerase II alpha and sensitivity to apoptosis induced by topoisomerase II inhibitors. British Journal of Cancer. 89(7). 1366–1374. 19 indexed citations
19.
Ohnuma, Kei, Yasuhiko Munakata, Tomonori Ishii, et al.. (2001). Soluble CD26/Dipeptidyl Peptidase IV Induces T Cell Proliferation Through CD86 Up-Regulation on APCs. The Journal of Immunology. 167(12). 6745–6755. 51 indexed citations
20.
Ohnuma, Kei, Keiichi Isoyama, Koichiro Ikuta, et al.. (2000). The Influence of HLA Genotyping Compatibility on Clinical Outcome after Cord Blood Transplantation from Unrelated Donors. Journal of Hematotherapy & Stem Cell Research. 9(4). 541–550. 9 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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