Kotaro Hama

5.0k total citations · 1 hit paper
49 papers, 4.2k citations indexed

About

Kotaro Hama is a scholar working on Molecular Biology, Cell Biology and Physiology. According to data from OpenAlex, Kotaro Hama has authored 49 papers receiving a total of 4.2k indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Molecular Biology, 12 papers in Cell Biology and 10 papers in Physiology. Recurrent topics in Kotaro Hama's work include Sphingolipid Metabolism and Signaling (30 papers), Lipid Membrane Structure and Behavior (14 papers) and Peroxisome Proliferator-Activated Receptors (9 papers). Kotaro Hama is often cited by papers focused on Sphingolipid Metabolism and Signaling (30 papers), Lipid Membrane Structure and Behavior (14 papers) and Peroxisome Proliferator-Activated Receptors (9 papers). Kotaro Hama collaborates with scholars based in Japan, United States and Netherlands. Kotaro Hama's co-authors include Junken Aoki, Hiroyuki Arai, Yasuhiro Kishi, Takao Yamori, Naoshi Dohmae, Asuka Inoue, Gordon B. Mills, Makiko Umezu‐Goto, Keizo Inoue and Koji Takio and has published in prestigious journals such as Nature, Proceedings of the National Academy of Sciences and Journal of Biological Chemistry.

In The Last Decade

Kotaro Hama

48 papers receiving 4.1k citations

Hit Papers

align trajectories

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.

Autotaxin has lysophospholipase D activity leading to tumor cell growth and motility by lysophosphatidic acid production

2002 794 citations Yasuhiro Kishi, Kotaro Hama et al. profile →

Peers

Countries citing papers authored by Kotaro Hama

Since Specialization

Citations

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

Fields of papers citing papers by Kotaro Hama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kotaro Hama

This figure shows the co-authorship network connecting the top 25 collaborators of Kotaro Hama. A scholar is included among the top collaborators of Kotaro Hama 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 Kotaro Hama. Kotaro Hama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Ceramide synthase CERS4 gene downregulation is associated with KRAS mutation in colorectal cancer 2023 ·Scientific Reports ·Tamuro Hayama, Kotaro Hama, Tsuyoshi Ozawa, Yuko Fujiwara, Keijiro Nozawa, Keiji Matsuda, Kazuaki Yokoyama, Yojiro Hashiguchi, Hiroki Ochiai, Takeyuki Misawa, Takeo Fukagawa	6
2	Cathepsin G-induced malignant progression of MCF-7 cells involves suppression of PAF signaling through induced expression of PAFAH1B2 2022 ·Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids ·Kazunari Tanigawa, (unknown), Yasuhiro Hayashi, Yoshiaki Shinden, Yuko Kijima, Shoji Natsugoe, (unknown), (unknown), Satoru Yui, Kotaro Hama, Kazuaki Yokoyama, Yasuhiro Nakamura, Koichi Suzuki, Hisao Nojiri, Keizo Inoue, Ken Karasawa	2
3	Very long-chain fatty acids are accumulated in triacylglycerol and nonesterified forms in colorectal cancer tissues 2021 ·Scientific Reports ·Kotaro Hama, Yuko Fujiwara, Tamuro Hayama, Tsuyoshi Ozawa, Keijiro Nozawa, Keiji Matsuda, Yojiro Hashiguchi, Kazuaki Yokoyama	26
4	Hexacosenoyl-CoA is the most abundant very long-chain acyl-CoA in ATP binding cassette transporter D1-deficient cells 2020 ·Journal of Lipid Research ·Kotaro Hama, Yuko Fujiwara, Shigeo Takashima, Yasuhiro Hayashi, Atsushi Yamashita, Nobuyuki Shimozawa, Kazuaki Yokoyama	12
5	Quantitative and Qualitative Method for Sphingomyelin by LC-MS Using Two Stable Isotopically Labeled Sphingomyelin Species 2018 ·Journal of Visualized Experiments ·Kotaro Hama, Yuko Fujiwara, Kazuaki Yokoyama	2
6	Complex formation of sphingomyelin synthase 1 with glucosylceramide synthase increases sphingomyelin and decreases glucosylceramide levels 2018 ·Journal of Biological Chemistry ·Yasuhiro Hayashi, Yoko Nemoto‐Sasaki, Naoki Matsumoto, Kotaro Hama, Takashi Tanikawa, Saori Oka, (unknown), (unknown), (unknown), Seisuke Arai, Ikuo Wada, Kazuaki Yokoyama, Takayuki Sugiura, Atsushi Yamashita	24
7	Molecular Species of Phospholipids with Very Long Chain Fatty Acids in Skin Fibroblasts of Zellweger Syndrome 2013 ·Lipids ·Kotaro Hama, Tatsuzo Nagai, (unknown), Kazutaka Ikeda, Masashi Morita, Noriko Satoh, Hiroki Nakanishi, Tsuneo Imanaka, Nobuyuki Shimozawa, Ryo Taguchi, Keizo Inoue, Kazuaki Yokoyama	17
8	Simultaneous quantitation of sphingoid bases and their phosphates in biological samples by liquid chromatography/electrospray ionization tandem mass spectrometry 2012 ·Analytical and Bioanalytical Chemistry ·Daisuke Saigusa, (unknown), Asuka Inoue, Kotaro Hama, Michiyo Okutani, (unknown), (unknown), Kaori Suzuki, (unknown), Naoto Suzuki, Hiroaki Yamaguchi, Nariyasu Mano, Junichi Goto, Takanori Hishinuma, Junken Aoki, Yoshihisa Tomioka	20
9	LPA3, a unique G protein-coupled receptor for lysophosphatidic acid 2010 ·Progress in Lipid Research ·Kotaro Hama, Junken Aoki	30
10	Lysophosphatidylmethanol is a pan lysophosphatidic acid receptor agonist and is produced by autotaxin in blood 2009 ·The Journal of Biochemistry ·(unknown), Kuniyuki Kano, Rie Motoki, Kotaro Hama, Shinichi Okudaira, Mayuko Ishida, Hideo Ogiso, Masayuki Tanaka, Norio Matsuki, Ryo Taguchi, Motomu Kanai, Masakatsu Shibasaki, Hiroyuki Arai, Junken Aoki	7
11	Both Plasma Lysophosphatidic Acid and Serum Autotaxin Levels are Increased in Chronic Hepatitis C 2007 ·Journal of Clinical Gastroenterology ·Naoko Watanabe, Hitoshi Ikeda, Kazuhiro Nakamura, Ryunosuke Ohkawa, Yukio Kume, Junken Aoki, Kotaro Hama, Shinichi Okudaira, Masayuki Tanaka, Tomoaki Tomiya, Mikio Yanase, Kazuaki Tejima, Takako Nishikawa, Masahiro Arai, Hiroyuki Arai, Masao Omata, Kenji Fujiwara, Yutaka Yatomi	157
12	Autotaxin Is Overexpressed in Glioblastoma Multiforme and Contributes to Cell Motility of Glioblastoma by Converting Lysophosphatidylcholine TO Lysophosphatidic Acid 2006 ·Journal of Biological Chemistry ·Yasuhiro Kishi, Shinichi Okudaira, Masayuki Tanaka, Kotaro Hama, Dai Shida, Joji Kitayama, Takao Yamori, Junken Aoki, Takamitsu Fujimaki, Hiroyuki Arai	198
13	Lysophosphatidic receptor, LPA3, is positively and negatively regulated by progesterone and estrogen in the mouse uterus 2006 ·Life Sciences ·Kotaro Hama, Junken Aoki, Koji Bandoh, Asuka Inoue, (unknown), Tomokazu Amano, Hiroshi Suzuki, Hiroyuki Arai	45
14	ADRP/adipophilin is degraded through the proteasome-dependent pathway during regression of lipid-storing cells 2005 ·Journal of Lipid Research ·Yutaka Masuda, Hiroyuki Itabe, (unknown), Kotaro Hama, Yasuyuki Fujimoto, Masahiro Mori, (unknown), Junken Aoki, Hiroyuki Arai, Tatsuya Takano	120
15	Lysophosphatidic Acid and Autotaxin Stimulate Cell Motility of Neoplastic and Non-neoplastic Cells through LPA1 2004 ·Journal of Biological Chemistry ·Kotaro Hama, Junken Aoki, Masahiro Fukaya, Yasuhiro Kishi, Teruyuki Sakai, Rika Suzuki, Hideo Ohta, Takao Yamori, Masahiko Watanabe, Jerold Chun, Hiroyuki Arai	235
16	Aberrant expression of lysophosphatidic acid (LPA) receptors in human colorectal cancer 2004 ·Laboratory Investigation ·Dai Shida, Toshiaki Watanabe, Junken Aoki, Kotaro Hama, Joji Kitayama, Hirofumi Sonoda, Yasuhiro Kishi, Hironori Yamaguchi, Shin Sasaki, Akihiro Sako, Tsuyoshi Konishi, Hiroyuki Arai, Hirokazu Nagawa	120
17	Over-expression of lysophosphatidic acid receptor-2 in human invasive ductal carcinoma 2004 ·Breast Cancer Research ·Joji Kitayama, Dai Shida, Akihiro Sako, Makoto Ishikawa, Kotaro Hama, Junken Aoki, Hiroyuki Arai, Hirokazu Nagawa	91
18	Dual mode regulation of migration by lysophosphatidic acid in human gastric cancer cells 2004 ·Experimental Cell Research ·Dai Shida, Joji Kitayama, Hironori Yamaguchi, Kotaro Hama, Junken Aoki, Hiroyuki Arai, Hiroharu Yamashita, Ken Mori, Akihiro Sako, Tsuyoshi Konishi, Toshiaki Watanabe, Teruyuki Sakai, Rika Suzuki, Hideo Ohta, Yoh Takuwa, Hirokazu Nagawa	60
19	Identification of an intracellular receptor for lysophosphatidic acid (LPA): LPA is a transcellular PPARγ agonist 2002 ·Proceedings of the National Academy of Sciences ·Thomas M. McIntyre, (unknown), Adriana Ribeiro Silva, (unknown), Yong Xu, Jerald C. Hinshaw, Guy A. Zimmerman, Kotaro Hama, Junken Aoki, Hiroyuki Arai, Glenn D. Prestwich	462
20	Serum Lysophosphatidic Acid Is Produced through Diverse Phospholipase Pathways 2002 ·Journal of Biological Chemistry ·Junken Aoki, (unknown), Yasukazu Takanezawa, Yasuhiro Kishi, Kotaro Hama, Tatsuya Kishimoto, Koji Mizuno, Keijiro Saku, Ryo Taguchi, Hiroyuki Arai	364

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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