World's Best Scientists 2026 revealed!
Ken-ichi Arai

Ken-ichi Arai

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Genetics and Molecular Biology
Japan
2024

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Molecular Biology 95 633 563 46 42 320 33954

Ken-ichi Arai publications per year

The chart shows the history of publications by Ken-ichi Arai between 1950 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ken-ichi Arai published across 75 years, from 1950 to 2024, averaging 5.1 papers a year. Output peaked at 24 publications in 1988. 14 of the 383 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1950 to 2024. Vertical axis: number of publications, 0 to 24. Peak 24 publications in 1988. 1950: 1 publication 1951: 0 publications 1952: 0 publications 1953: 0 publications 1954: 0 publications 1955: 0 publications 1956: 0 publications 1957: 0 publications 1958: 0 publications 1959: 0 publications 1960: 0 publications 1961: 0 publications 1962: 0 publications 1963: 0 publications 1964: 0 publications 1965: 0 publications 1966: 0 publications 1967: 0 publications 1968: 3 publications 1969: 0 publications 1970: 0 publications 1971: 1 publication 1972: 2 publications 1973: 2 publications 1974: 6 publications 1975: 7 publications 1976: 3 publications 1977: 7 publications 1978: 4 publications 1979: 5 publications 1980: 5 publications 1981: 12 publications 1982: 1 publication 1983: 5 publications 1984: 6 publications 1985: 9 publications 1986: 8 publications 1987: 14 publications 1988: 24 publications 1989: 16 publications 1990: 16 publications 1991: 11 publications 1992: 18 publications 1993: 16 publications 1994: 19 publications 1995: 20 publications 1996: 18 publications 1997: 15 publications 1998: 5 publications 1999: 13 publications 2000: 14 publications 2001: 9 publications 2002: 12 publications 2003: 11 publications 2004: 6 publications 2005: 8 publications 2006: 8 publications 2007: 2 publications 2008: 2 publications 2009: 1 publication 2010: 0 publications 2011: 0 publications 2012: 0 publications 2013: 0 publications 2014: 1 publication 2015: 0 publications 2016: 1 publication 2017: 0 publications 2018: 0 publications 2019: 0 publications 2020: 0 publications 2021: 0 publications 2022: 2 publications 2023: 10 publications 2024: 4 publications
1950 2024

383 publications in total across all disciplines

View publications per year as a table
Ken-ichi Arai: publications per year, 1950 to 2024
Year Publications
1950 1
1951 0
1952 0
1953 0
1954 0
1955 0
1956 0
1957 0
1958 0
1959 0
1960 0
1961 0
1962 0
1963 0
1964 0
1965 0
1966 0
1967 0
1968 3
1969 0
1970 0
1971 1
1972 2
1973 2
1974 6
1975 7
1976 3
1977 7
1978 4
1979 5
1980 5
1981 12
1982 1
1983 5
1984 6
1985 9
1986 8
1987 14
1988 24
1989 16
1990 16
1991 11
1992 18
1993 16
1994 19
1995 20
1996 18
1997 15
1998 5
1999 13
2000 14
2001 9
2002 12
2003 11
2004 6
2005 8
2006 8
2007 2
2008 2
2009 1
2010 0
2011 0
2012 0
2013 0
2014 1
2015 0
2016 1
2017 0
2018 0
2019 0
2020 0
2021 0
2022 2
2023 10
2024 4
Total 383
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Ken-ichi Arai publication distribution in Molecular Biology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Molecular Biology in 2026. The highlighted bar marks where Ken-ichi Arai sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 53 bars. Horizontal axis: publications, 47–56 to 564+. Vertical axis: number of scientists, 0 to 177. Most scientists, 177, have 117–126 publications. The last bar groups every scientist with 564 publications or more. The highlighted bar, 317–326 publications, is where this scientist sits. 47–56 publications: 7 scientists 57–66 publications: 17 scientists 67–76 publications: 65 scientists 77–86 publications: 90 scientists 87–96 publications: 125 scientists 97–106 publications: 131 scientists 107–116 publications: 162 scientists 117–126 publications: 177 scientists 127–136 publications: 158 scientists 137–146 publications: 158 scientists 147–156 publications: 146 scientists 157–166 publications: 159 scientists 167–176 publications: 131 scientists 177–186 publications: 110 scientists 187–196 publications: 112 scientists 197–206 publications: 100 scientists 207–216 publications: 89 scientists 217–226 publications: 98 scientists 227–236 publications: 74 scientists 237–246 publications: 72 scientists 247–256 publications: 63 scientists 257–266 publications: 53 scientists 267–276 publications: 54 scientists 277–286 publications: 49 scientists 287–296 publications: 52 scientists 297–306 publications: 43 scientists 307–316 publications: 46 scientists 317–326 publications: 41 scientists 327–336 publications: 42 scientists 337–346 publications: 31 scientists 347–356 publications: 28 scientists 357–366 publications: 29 scientists 367–376 publications: 26 scientists 377–386 publications: 24 scientists 387–396 publications: 24 scientists 397–406 publications: 14 scientists 407–416 publications: 13 scientists 417–426 publications: 20 scientists 427–436 publications: 12 scientists 437–446 publications: 20 scientists 447–456 publications: 11 scientists 457–466 publications: 10 scientists 467–476 publications: 14 scientists 477–486 publications: 14 scientists 487–496 publications: 10 scientists 497–506 publications: 13 scientists 507–516 publications: 13 scientists 517–526 publications: 2 scientists 527–536 publications: 4 scientists 537–546 publications: 6 scientists 547–556 publications: 8 scientists 557–563 publications: 6 scientists 564+ publications: 100 scientists
47–56 publications 564+

This scientist: 320 publications — 83rd percentile

83% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 564 publications or more.

View publications distribution as a table
Number of Molecular Biology scientists by publication count, Research.com 2026 ranking edition. Based on 3,076 ranked scientists.
Publications Scientists This scientist
47–56 7
57–66 17
67–76 65
77–86 90
87–96 125
97–106 131
107–116 162
117–126 177
127–136 158
137–146 158
147–156 146
157–166 159
167–176 131
177–186 110
187–196 112
197–206 100
207–216 89
217–226 98
227–236 74
237–246 72
247–256 63
257–266 53
267–276 54
277–286 49
287–296 52
297–306 43
307–316 46
317–326 41 320
327–336 42
337–346 31
347–356 28
357–366 29
367–376 26
377–386 24
387–396 24
397–406 14
407–416 13
417–426 20
427–436 12
437–446 20
447–456 11
457–466 10
467–476 14
477–486 14
487–496 10
497–506 13
507–516 13
517–526 2
527–536 4
537–546 6
547–556 8
557–563 6
564+ 100
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Ken-ichi Arai D-index placement in Molecular Biology in 2026

The chart shows the D-index (discipline H-index) distribution of Molecular Biology scientists ranked by Research.com in 2026. The highlighted bar marks where Ken-ichi Arai sits on this spectrum.

No. of scientists
25 50 75 100 125
Bar chart with 54 bars. Horizontal axis: D-Index, 40–41 to 145+. Vertical axis: number of scientists, 0 to 131. Most scientists, 131, have 64–65 D-Index. The last bar groups every scientist with 145 D-Index or more. The highlighted bar, 94–95 D-Index, is where this scientist sits. 40–41 D-Index: 36 scientists 42–43 D-Index: 101 scientists 44–45 D-Index: 115 scientists 46–47 D-Index: 121 scientists 48–49 D-Index: 118 scientists 50–51 D-Index: 130 scientists 52–53 D-Index: 106 scientists 54–55 D-Index: 116 scientists 56–57 D-Index: 113 scientists 58–59 D-Index: 129 scientists 60–61 D-Index: 120 scientists 62–63 D-Index: 105 scientists 64–65 D-Index: 131 scientists 66–67 D-Index: 95 scientists 68–69 D-Index: 97 scientists 70–71 D-Index: 106 scientists 72–73 D-Index: 83 scientists 74–75 D-Index: 89 scientists 76–77 D-Index: 77 scientists 78–79 D-Index: 70 scientists 80–81 D-Index: 73 scientists 82–83 D-Index: 60 scientists 84–85 D-Index: 48 scientists 86–87 D-Index: 45 scientists 88–89 D-Index: 50 scientists 90–91 D-Index: 31 scientists 92–93 D-Index: 51 scientists 94–95 D-Index: 43 scientists 96–97 D-Index: 38 scientists 98–99 D-Index: 39 scientists 100–101 D-Index: 41 scientists 102–103 D-Index: 29 scientists 104–105 D-Index: 33 scientists 106–107 D-Index: 35 scientists 108–109 D-Index: 20 scientists 110–111 D-Index: 38 scientists 112–113 D-Index: 19 scientists 114–115 D-Index: 28 scientists 116–117 D-Index: 13 scientists 118–119 D-Index: 23 scientists 120–121 D-Index: 16 scientists 122–123 D-Index: 15 scientists 124–125 D-Index: 11 scientists 126–127 D-Index: 21 scientists 128–129 D-Index: 7 scientists 130–131 D-Index: 13 scientists 132–133 D-Index: 14 scientists 134–135 D-Index: 17 scientists 136–137 D-Index: 9 scientists 138–139 D-Index: 8 scientists 140–141 D-Index: 16 scientists 142–143 D-Index: 7 scientists 144 D-Index: 7 scientists 145+ D-Index: 100 scientists
40–41 D-Index 145+

This scientist: 95 D-Index — 80th percentile

80% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 145 D-Index or more.

View D-Index distribution as a table
Number of Molecular Biology scientists by D-index, Research.com 2026 ranking edition. Based on 3,076 ranked scientists.
D-Index Scientists This scientist
40–41 36
42–43 101
44–45 115
46–47 121
48–49 118
50–51 130
52–53 106
54–55 116
56–57 113
58–59 129
60–61 120
62–63 105
64–65 131
66–67 95
68–69 97
70–71 106
72–73 83
74–75 89
76–77 77
78–79 70
80–81 73
82–83 60
84–85 48
86–87 45
88–89 50
90–91 31
92–93 51
94–95 43 95
96–97 38
98–99 39
100–101 41
102–103 29
104–105 33
106–107 35
108–109 20
110–111 38
112–113 19
114–115 28
116–117 13
118–119 23
120–121 16
122–123 15
124–125 11
126–127 21
128–129 7
130–131 13
132–133 14
134–135 17
136–137 9
138–139 8
140–141 16
142–143 7
144 7
145+ 100
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Research.com Recognitions

  • 2024 - Research.com Genetics and Molecular Biology in Japan Leader Award

Overview

Ken-ichi Arai is a researcher affiliated with the University of Tokyo in Japan. Their work primarily focuses on medicine, with specific attention to surgery and biomedical engineering. The research also intersects with molecular biology, cellular and molecular neuroscience, and biomaterials, illustrating a broad engagement with both clinical and experimental biomedical sciences.

The scientist's research interests concentrate on several main topics including tissue engineering and regenerative medicine, 3D printing in biomedical research, electrospun nanofibers in biomedical applications, pluripotent stem cells research, neuropeptides and animal physiology, additive manufacturing and 3D printing technologies, and pharmacological receptor mechanisms and effects.

Ken-ichi Arai has published extensively in several venues. Frequent publication outlets include PLoS ONE, Graefe's Archive for Clinical and Experimental Ophthalmology, Clinical Nutrition ESPEN, Advanced Healthcare Materials, and Scientific Reports. The diversity of journals reflects an interdisciplinary approach bridging clinical applications and advanced biomedical materials research.

Recent selected publications highlight the application of bio-3D printing and scaffold-free tissue construction technologies:

  • Scaffold-Free Bio-3D Printing Using Spheroids as "Bio-Inks" for Tissue (Re-)Construction and Drug Response Tests (2020, Advanced Healthcare Materials)
  • Drug response analysis for scaffold-free cardiac constructs fabricated using bio-3D printer (2020, Scientific Reports)
  • Cryopreservation method for spheroids and fabrication of scaffold-free tubular constructs (2020, PLoS ONE)
  • Scaffold-Free Tubular Engineered Heart Tissue From Human Induced Pluripotent Stem Cells Using Bio-3D Printing Technology in vivo (2022, Frontiers in Cardiovascular Medicine)
  • Distribution of amniotic stem cells in human term amnion membrane (2021, Microscopy)

Ken-ichi Arai has collaborated frequently with several researchers, including Koichi Nakayama, Daiki Murata, Shoko Takao, Toshiko Yoshida, and Soichiro Ide. These collaborations have contributed to developing advances in biofabrication and regenerative medicine.

Best Publications

  • SR alpha promoter: an efficient and versatile mammalian cDNA expression system composed of the simian virus 40 early promoter and the R-U5 segment of human T-cell leukemia virus type 1 long terminal repeat.

    Y. Takebe;M. Seiki;J.-I. Fujisawa;P. Hoy

  • Cytokines: Coordinators of Immune and Inflammatory Responses

    Ken-ichi Arai;Frank Lee;Atsushi Miyajima;Shoichiro Miyatake

  • IgE production by normal human lymphocytes is induced by interleukin 4 and suppressed by interferons gamma and alpha and prostaglandin E2

    J Pène;F Rousset;F Brière;I Chrétien

  • Sharing of the interleukin-2 (IL-2) receptor gamma chain between receptors for IL-2 and IL-4.

    Motonari Kondo;Toshikazu Takeshita;Naoto Ishii;Masataka Nakamura

  • Molecular cloning of a second subunit of the receptor for human granulocyte-macrophage colony-stimulating factor (GM-CSF): reconstitution of a high-affinity GM-CSF receptor.

    Kazuhiro Hayashida;Toshio Kitamura;Daniel M. Gorman;Ken-Ichi Arai

  • Expression cloning of the human IL-3 receptor cDNA reveals a shared β subunit for the human IL-3 and GM-CSF receptors

    Toshio Kitamura;Noriko Sato;Ken-ichi Arai;Atsushi Miyajima

  • Cytokine receptors and signal transduction

    Atsushi Miyajima;I Toshio Kitamura;I Nobuyuki Harada;Takashi Yokota

  • Isolation and characterization of a human interleukin cDNA clone, homologous to mouse B-cell stimulatory factor 1, that expresses B-cell- and T-cell-stimulating activities.

    T Yokota;T Otsuka;T Mosmann;J Banchereau

  • Human recombinant interleukin 4 induces Fc epsilon receptors (CD23) on normal human B lymphocytes.

    T Defrance;J P Aubry;F Rousset;B Vanbervliet

  • Isolation and characterization of a mouse cDNA clone that expresses mast-cell growth-factor activity in monkey cells

    Takashi Yokota;Frank Lee;Donna Rennick;Carol Hall

  • Cloning of an interleukin-3 receptor gene: a member of a distinct receptor gene family.

    Naoto Itoh;Shin Yonehara;Jolanda Schreurs;Daniel M Gorman

  • Signal transduction by the high-affinity GM-CSF receptor: two distinct cytoplasmic regions of the common beta subunit responsible for different signaling.

    N. Sato;K. Sakamaki;N. Terada;K.-I. Arai

  • Suppression of apoptotic death in hematopoietic cells by signalling through the IL-3/GM-CSF receptors.

    T. Kinoshita;T. Yokota;K.-I. Arai;A. Miyajima

  • Nucleotide sequences of STE2 and STE3, cell type-specific sterile genes from Saccharomyces cerevisiae

    N. Nakayama;A. Miyajima;K. Arai

  • Cytokine Receptors and Signal Transduction

    Atsushi Miyajima

  • GPA1, a haploid-specific essential gene, encodes a yeast homolog of mammalian G protein which may be involved in mating factor signal transduction

    Ikuko Miyajima;Masato Nakafuku;Naoki Nakayama;Charles Brenner

  • Isolation of cDNA for a human granulocyte-macrophage colony-stimulating factor by functional expression in mammalian cells.

    Frank Lee;Takashi Yokota;Takeshi Otsuka;Lorraine Gemmell

  • Studies on Polypeptide Elongation Factors from Escherichia coli II. PURIFICATION OF FACTORS Tu-GUANOSINE DIPHOSPHATE, Ts, AND Tu-Ts, AND CRYSTALLIZATION OF Tu-GUANOSINE DIPHOSPHATE AND Tu-Ts

    Ken-Ichi Arai;Masao Kawakita;Yoshito Kaziro

  • Recombinant interleukin 4 promotes the growth of human T cells.

    H. Spits;H. Yssel;Y. Takebe;N. Arai

  • Structure of the chromosomal gene for granulocyte-macrophage colony stimulating factor: comparison of the mouse and human genes.

    S Miyatake;T Otsuka;T Yokota;F Lee

Frequent Co-Authors

Naoko Arai
Naoko Arai University of Tokyo
Takashi Yokota
Takashi Yokota Kanazawa University
Atsushi Miyajima
Atsushi Miyajima University of Tokyo
Hisao Masai
Hisao Masai Tokyo Metropolitan Institute of Medical Science
Yoshito Kaziro
Yoshito Kaziro Kyoto University
Noriko Sato
Noriko Sato Tokyo Medical and Dental University
Masaaki Muramatsu
Masaaki Muramatsu Tokyo Medical and Dental University
Hiroshi Tokumitsu
Hiroshi Tokumitsu Okayama University
Frank S. Lee
Frank S. Lee University of Pennsylvania

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