Masamichi Muramatsu

19.5k total citations · 12 hit papers
182 papers, 13.6k citations indexed

About

Masamichi Muramatsu is a scholar working on Epidemiology, Hepatology and Molecular Biology. According to data from OpenAlex, Masamichi Muramatsu has authored 182 papers receiving a total of 13.6k indexed citations (citations by other indexed papers that have themselves been cited), including 79 papers in Epidemiology, 69 papers in Hepatology and 53 papers in Molecular Biology. Recurrent topics in Masamichi Muramatsu's work include Hepatitis B Virus Studies (51 papers), Hepatitis C virus research (50 papers) and T-cell and B-cell Immunology (31 papers). Masamichi Muramatsu is often cited by papers focused on Hepatitis B Virus Studies (51 papers), Hepatitis C virus research (50 papers) and T-cell and B-cell Immunology (31 papers). Masamichi Muramatsu collaborates with scholars based in Japan, United States and China. Masamichi Muramatsu's co-authors include Tasuku Honjo, Kazuo Kinoshita, Sidonia Fagarasan, Shuichi Yamada, Yoichi Shinkai, Hitoshi Nagaoka, Il‐mi Okazaki, Keiichiro Suzuki, Hiroshi Hiai and Shrikant Anant and has published in prestigious journals such as Nature, Science and Cell.

In The Last Decade

Masamichi Muramatsu

179 papers receiving 13.4k citations

Hit Papers

Class Switch Recombination and Hypermutation Require Acti... 1997 2026 2006 2016 2000 1999 2004 2002 2002 500 1000 1.5k 2.0k 2.5k
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. Class Switch Recombination and Hypermutation Require Activation-Induced Cytidine Deaminase (AID), a Potential RNA Editing Enzyme
    2000 2.6k citations Masamichi Muramatsu, Kazuo Kinoshita et al. profile →
  2. Specific Expression of Activation-induced Cytidine Deaminase (AID), a Novel Member of the RNA-editing Deaminase Family in Germinal Center B Cells
    1999 904 citations Masamichi Muramatsu, Kazuo Kinoshita et al. Journal of Biological Chemistry profile →
  3. Aberrant expansion of segmented filamentous bacteria in IgA-deficient gut
    2004 563 citations Masamichi Muramatsu, Tasuku Honjo et al. Proceedings of the National Academy of Sciences profile →
  4. Molecular Mechanism of Class Switch Recombination: Linkage with Somatic Hypermutation
    2002 481 citations Tasuku Honjo, Kazuo Kinoshita et al. profile →
  5. Critical Roles of Activation-Induced Cytidine Deaminase in the Homeostasis of Gut Flora
    2002 474 citations Masamichi Muramatsu, Hitoshi Nagaoka et al. Science profile →
  6. AID is required to initiate Nbs1/γ-H2AX focus formation and mutations at sites of class switching
    2001 409 citations Masamichi Muramatsu, Tasuku Honjo et al. profile →
  7. AID Is Required for c-myc/IgH Chromosome Translocations In Vivo
    2004 367 citations Masamichi Muramatsu, Tasuku Honjo et al. profile →
  8. Constitutive Expression of AID Leads to Tumorigenesis
    2003 360 citations Il‐mi Okazaki, Naoki Kakazu et al. profile →
  9. B1b Lymphocytes Confer T Cell-Independent Long-Lasting Immunity
    2004 330 citations Masamichi Muramatsu, Tasuku Honjo et al. profile →
  10. In situ class switching and differentiation to IgA-producing cells in the gut lamina propria
    2001 329 citations Kazuo Kinoshita, Masamichi Muramatsu et al. profile →
  11. Inhibition of Carnitine Palmitoyltransferase I Augments Sphingolipid Synthesis and Palmitate-induced Apoptosis
    1997 305 citations Masamichi Muramatsu, Tasuku Honjo et al. Journal of Biological Chemistry profile →
  12. PD-1 and LAG-3 inhibitory co-receptors act synergistically to prevent autoimmunity in mice
    2011 255 citations Il‐mi Okazaki, Masamichi Muramatsu 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
Masamichi Muramatsu Japan 50 7.3k 5.4k 2.6k 1.8k 1.2k 182 13.6k
Carl F. Ware United States 79 13.4k 1.8× 5.6k 1.0× 3.7k 1.4× 4.4k 2.5× 821 0.7× 257 21.3k
Gail A. Bishop United States 54 7.3k 1.0× 3.3k 0.6× 1.5k 0.6× 2.0k 1.1× 477 0.4× 217 11.7k
Tsukasa Seya Japan 73 13.8k 1.9× 4.8k 0.9× 3.5k 1.4× 1.9k 1.1× 1.8k 1.5× 372 19.3k
Andrea Cerutti United States 52 6.2k 0.8× 2.3k 0.4× 1.2k 0.5× 904 0.5× 1.0k 0.9× 125 10.0k
Matthew L. Albert France 60 9.1k 1.2× 4.7k 0.9× 2.4k 0.9× 3.0k 1.7× 2.5k 2.1× 151 16.5k
Edgar Schmitt Germany 64 12.8k 1.7× 4.4k 0.8× 1.8k 0.7× 2.6k 1.4× 569 0.5× 192 17.9k
R. Alan B. Ezekowitz United States 72 10.5k 1.4× 4.6k 0.9× 2.4k 0.9× 1.5k 0.8× 1.7k 1.4× 138 17.7k
Jürgen Ruland Germany 65 8.8k 1.2× 8.3k 1.5× 2.5k 1.0× 3.0k 1.7× 2.3k 1.9× 161 17.7k
Shiv Pillai United States 56 6.0k 0.8× 3.1k 0.6× 3.2k 1.2× 1.3k 0.7× 502 0.4× 146 13.2k
Akinori Takaoka Japan 45 11.6k 1.6× 5.8k 1.1× 2.7k 1.0× 4.8k 2.7× 1.7k 1.4× 91 17.6k

Countries citing papers authored by Masamichi Muramatsu

Since Specialization
Citations

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

Fields of papers citing papers by Masamichi Muramatsu

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masamichi Muramatsu

This figure shows the co-authorship network connecting the top 25 collaborators of Masamichi Muramatsu. A scholar is included among the top collaborators of Masamichi Muramatsu 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 Masamichi Muramatsu. Masamichi Muramatsu 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.
Li, You, Ling Xie, Maryna Kapustina, et al.. (2025). Heat shock protein 90 chaperone activity is required for hepatitis A virus replication. Journal of Virology. 99(7). e0050225–e0050225. 1 indexed citations
2.
Saso, Wakana, Takuya Yamamoto, Masayoshi Satō, et al.. (2024). Anti-SARS-CoV-2 gapmer antisense oligonucleotides targeting the main protease region of viral RNA. Antiviral Research. 230. 105992–105992. 2 indexed citations
3.
Momose, Haruka, Asako Murayama, N. Yamada, et al.. (2023). Performance evaluation of in vitro diagnostic kits for hepatitis B virus infection using the regional reference panel of Japan. Virology Journal. 20(1). 93–93. 6 indexed citations
4.
Hayashi, Tsuyoshi, et al.. (2023). Inhibitory effect of Ephedra herba on human norovirus infection in human intestinal organoids. Biochemical and Biophysical Research Communications. 671. 200–204. 13 indexed citations
5.
MATSUMOTΟ, Takeo, Mitsuhiro Nakamura, Takashi Iizuka, et al.. (2023). Androgen promotes squamous differentiation of atypical cells in cervical intraepithelial neoplasia via an ELF3‐dependent pathway. Cancer Medicine. 12(9). 10816–10828. 9 indexed citations
6.
Shiota, Tomoyuki, Guan‐Yuan Chen, Kevin L. McKnight, et al.. (2023). Hepatoviruses promote very-long-chain fatty acid and sphingolipid synthesis for viral RNA replication and quasi-enveloped virus release. Science Advances. 9(42). eadj4198–eadj4198. 9 indexed citations
7.
Shiota, Tomoyuki, Mami Matsuda, Koji Ishii, et al.. (2022). Macrophage Depletion Reactivates Fecal Virus Shedding following Resolution of Acute Hepatitis A inIfnar1–/–Mice. Journal of Virology. 96(23). e0149622–e0149622. 3 indexed citations
8.
Iwamoto, Masashi, Junna Kawasaki, Shohei Kojima, et al.. (2021). Identification of novel avian and mammalian deltaviruses provides new insights into deltavirus evolution. Virus Evolution. 7(1). veab003–veab003. 22 indexed citations
9.
Ishizaka, Aya, Michiko Koga, Taketoshi Mizutani, et al.. (2021). Prolonged Gut Dysbiosis and Fecal Excretion of Hepatitis A Virus in Patients Infected with Human Immunodeficiency Virus. Viruses. 13(10). 2101–2101. 14 indexed citations
10.
Zhang, Wenjing, Michiyo Kataoka, Fang‐Tzy Wu, et al.. (2020). Isolation and characterization of mammalian orthoreoviruses using a cell line resistant to sapelovirus infection. Transboundary and Emerging Diseases. 67(6). 2849–2859. 3 indexed citations
11.
Kakizaki, Masatoshi, Yuichiro Yamamoto, Motoyuki Otsuka, et al.. (2020). Extracellular vesicles secreted by HBV-infected cells modulate HBV persistence in hydrodynamic HBV transfection mouse model. Journal of Biological Chemistry. 295(35). 12449–12460. 22 indexed citations
12.
Liu, Guangyan, Xiancai Ma, Kousho Wakae, et al.. (2019). Adenosine deaminase acting on RNA-1 (ADAR1) inhibits hepatitis B virus (HBV) replication by enhancing microRNA-122 processing. Journal of Biological Chemistry. 294(38). 14043–14054. 23 indexed citations
13.
Watanabe, Noriyuki, Tomoko Date, Hideki Aizaki, et al.. (2019). Establishment of infectious genotype 4 cell culture-derived hepatitis C virus. Journal of General Virology. 101(2). 188–197. 4 indexed citations
14.
Wakae, Kousho, Tomoaki Nishiyama, Satoru Kondo, et al.. (2018). Keratinocyte differentiation induces APOBEC3A, 3B, and mitochondrial DNA hypermutation. Scientific Reports. 8(1). 9745–9745. 16 indexed citations
15.
Matsushita, Takashi, Le Huu Doanh, Tadahiro Kobayashi, et al.. (2016). A novel splenic B1 regulatory cell subset suppresses allergic disease through phosphatidylinositol 3-kinase–Akt pathway activation. Journal of Allergy and Clinical Immunology. 138(4). 1170–1182.e9. 52 indexed citations
16.
Kotani, Ai, Il‐mi Okazaki, Masamichi Muramatsu, et al.. (2005). A target selection of somatic hypermutations is regulated similarly between T and B cells upon activation-induced cytidine deaminase expression. Proceedings of the National Academy of Sciences. 102(12). 4506–4511. 60 indexed citations
17.
Begum, Nasim A., Kazuo Kinoshita, Naoki Kakazu, et al.. (2004). Uracil DNA Glycosylase Activity Is Dispensable for Immunoglobulin Class Switch. Science. 305(5687). 1160–1163. 91 indexed citations
18.
Doi, Tomomitsu, Kazuo Kinoshita, Masaya Ikegawa, Masamichi Muramatsu, & Tasuku Honjo. (2003). De novo protein synthesis is required for the activation-induced cytidine deaminase function in class-switch recombination. Proceedings of the National Academy of Sciences. 100(5). 2634–2638. 94 indexed citations
19.
Yoshikawa, Kiyotsugu, Il‐mi Okazaki, Kazuo Kinoshita, et al.. (2002). AID Enzyme-Induced Hypermutation in an Actively Transcribed Gene in Fibroblasts. Science. 296(5575). 2033–2036. 312 indexed citations
20.
Ueki, Nobuhide, Naohiko Seki, Kazuhiro Yano, et al.. (1999). Isolation, tissue expression, and chromosomal assignment of a human LIM protein gene, showing homology to rat Enigma homologue (ENH). Journal of Human Genetics. 44(4). 256–260. 32 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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