Ichiro Tazawa

Last Updated :2025/07/16

Affiliations, Positions
Amphibian Research Center, Assistant Professor
E-mail
itazawahiroshima-u.ac.jp
Self-introduction
I research on metamorphosis and limb development/regeneration of amphibians.

Basic Information

Academic Degrees

  • Doctor of Science, Hiroshima University
  • Master of Science, Hiroshima University
  • Bachelor of Science, Hiroshima University

Educational Activity

  • [Bachelor Degree Program] School of Science : Biological Sciences : Biology
  • [Master's Program] Graduate School of Integrated Sciences for Life : Division of Integrated Sciences for Life : Program of Basic Biology
  • [Doctoral Program] Graduate School of Integrated Sciences for Life : Division of Integrated Sciences for Life : Program of Basic Biology

In Charge of Primary Major Programs

  • Biology

Research Fields

  • Biology;Basic biology;Biodiversity / Systematics
  • Biology;Basic biology;Morphology / Structure
  • Biology;Biological Science;Developmental biology

Research Keywords

  • development
  • limb
  • regeneration
  • metamorphosis
  • amphibian

Affiliated Academic Societies

  • Herpetological Society of Japan, 2018/09
    Related URL
  • The Zoological Society of Japan
  • Japanese Society of Developmental Biologists

Educational Activity

Course in Charge

  1. 2025, Liberal Arts Education Program1, Intensive, Introduction to Science
  2. 2025, Liberal Arts Education Program1, Intensive, Introduction to Science
  3. 2025, Liberal Arts Education Program1, 3Term, The life science of amphibians
  4. 2025, Liberal Arts Education Program1, 2Term, Introductory Seminar for First-Year Students
  5. 2025, Undergraduate Education, 2Term, Basic Biological Science B
  6. 2025, Undergraduate Education, 1Term, Regeneration Biology
  7. 2025, Undergraduate Education, 1Term, Endocrinology・Immunology
  8. 2025, Undergraduate Education, Second Semester, Seminar for Amphibian Biology
  9. 2025, Undergraduate Education, First Semester, Practice for Fundamental Biology I
  10. 2025, Undergraduate Education, First Semester, Practice for Fundamental Biology III
  11. 2025, Undergraduate Education, Second Semester, Practice for Fundamental Biology IV
  12. 2025, Undergraduate Education, First Semester, Practice for Fundamental Biology IV
  13. 2025, Undergraduate Education, Second Semester, English Seminar in Science
  14. 2025, Undergraduate Education, Second Semester, English Seminar in Science
  15. 2025, Undergraduate Education, 1Term, English Seminar for Globalization A
  16. 2025, Undergraduate Education, 2Term, English Seminar for Globalization A
  17. 2025, Graduate Education (Master's Program) , 1Term, Special Lectures in Integrated Sciences for Life
  18. 2025, Graduate Education (Doctoral Program) , 1Term, Research Plans in Life Science
  19. 2025, Graduate Education (Master's Program) , Year, Research for Academic Degree Dissertation in Basic Biology
  20. 2025, Graduate Education (Master's Program) , 3Term, Natural History Sciences
  21. 2025, Graduate Education (Master's Program) , First Semester, Exercises in Basic Biology A
  22. 2025, Graduate Education (Master's Program) , Second Semester, Exercises in Basic Biology B

Research Activities

Academic Papers

  1. Effect of Cdk1 gene disruption on cell cycle progression in newt cells, DEVELOPMENT GROWTH & DIFFERENTIATION, 67(2), 85-93, 202502
    Link to Paper Search Results by DOI
  2. Removal of the Ilium and Its Primordium Does Not Affect the Morphology of the Sacral Rib in the Newt Pleurodeles waltl, CURRENT HERPETOLOGY, 44(1), 55-72, 202502
    Link to Paper Search Results by DOI
  3. Amphibian newts as experimental models for studying weight gain after castration, ENDOCRINE JOURNAL, 71(2), 181-191, 2024
    Link to Paper Search Results by DOI
  4. Generation of translucent Xenopus tropicalis through triple knockout of pigmentation genes, DEVELOPMENT GROWTH & DIFFERENTIATION, 65(9), 591-598, 202312
    Link to Paper Search Results by DOI
  5. Phenotype-genotype relationships in Xenopus sox9 crispants provide insights into campomelic dysplasia and vertebrate jaw evolution, DEVELOPMENT GROWTH & DIFFERENTIATION, 65(8), 481-497, 202310
    Link to Paper Search Results by DOI
  6. Osteological and histological comparison of the development of the interphalangeal intercalary skeletal element between hyloid and ranoid anurans, DEVELOPMENT GROWTH & DIFFERENTIATION, 65(2), 100-108, 202302
    Link to Paper Search Results by DOI
  7. Intravital staining to detect mineralization in Xenopus tropicalis during and after metamorphosis, DEVELOPMENT GROWTH & DIFFERENTIATION, 64(7), 368-378, 202209
    Link to Paper Search Results by DOI
  8. Cryo-injury procedure-induced cardiac regeneration shows unique gene expression profiles in the newt Pleurodeles waltl, DEVELOPMENTAL DYNAMICS, 251(5), 864-876, 20220502
    Link to Paper Search Results by DOI
  9. Photoperiod-independent testicular development in the model newt Pleurodeles waltl, DEVELOPMENT GROWTH & DIFFERENTIATION, 63(6), 277-284, 20210826
    Link to Paper Search Results by DOI
  10. A unique role of thyroid hormone receptor beta in regulating notochord resorption during Xenopus metamorphosis, GENERAL AND COMPARATIVE ENDOCRINOLOGY, 277, 66-72, 20190601
    Link to Paper Search Results by DOI
  11. Thyroid Hormone Receptor alpha- and beta-Knockout Xenopus tropicalis Tadpoles Reveal Subtype-Specific Roles During Development, ENDOCRINOLOGY, 159(2), 733-743, 201802
    Link to Paper Search Results by DOI
  12. Homeotic transformation of tails into limbs in anurans, DEVELOPMENT GROWTH & DIFFERENTIATION, 60(6), 365-376, 20180814
    Link to Paper Search Results by DOI
  13. ★, Vitamin A induced homeotic hindlimb formation on dorsal and ventral sides of regenerating tissue of amputated tails of Japanese brown frog tadpoles, DEVELOPMENT GROWTH & DIFFERENTIATION, 59(9), 688-700, 201712
    Link to Paper Search Results by DOI
  14. Improved transport of the model amphibian, Xenopus tropicalis, and its viable temperature for transport, Current Herpetology, 33(1), 75-87, 201402
  15. Expression of the amelogenin gene in the skin of Xenopus tropicalis., Zoological Science, 30(3), 154-159, 201303
  16. Effects of hypergravity on oocyte maturation in Xenopus laevis, Part II, Space Utilization Research, 23, 311-313, 2007
  17. The effects of hypergravity on bipolar spindle formation of meiosis II in Xenopus oocytes, Biological Science in Space, 20, 92-94, 2006
  18. Effects of the hypergravity on oocyte maturation of Xenopus laevis, Space Utilization Research, 22, 228-230, 200603
  19. Skin pigmentary variants in Rana nigromaculata, Journal of Clinical Biochemistry and Nutrition, 38(3), 195-203, 20060419
  20. A novel Xenopus laevis larval keratin gene, xlk2: its gene structure and expression during regeneration and metamorphosis of limb and tail., Biochimica et Biophysica Acta - Gene Structure and Expression, 1759(5), 20060524
  21. Effects of hypergravity on oocyte maturation in Xenopus laevis, Biological Sciences in Space, 19(4), 242-244, 2005
  22. Expression of helix-loop-helix type negative regulators of differentiation during limb regeneration in urodeles and anurans, Development, Growth and Differentiation, 41(6), 731-743, 19991221

Invited Lecture, Oral Presentation, Poster Presentation

  1. Cell proliferation in CDK1 knockout newts, Yuta Nakao, Yuta Nakao, Ichiro Tazawa, Nobuaki Furuno, Toshinori Hayashi, 56th Annual Meeting of the Japanese Society of Developmental Biologists, 2023/07/22, Without Invitation, Japanese, Sendai International Center
  2. Investigation of regulating factors for testicular regeneration in newts, Mai Takehara, Mai Takehara, Mitsuki Kyakuno, Yukio Sato , Takashi Takeuchi, Ichiro Tazawa, Nobuaki Furuno, Takuya Imamura , Toshinori Hayashi, 2023/07/23, Without Invitation, Japanese, Sendai International Center
  3. Functional analysis of the Pdx genes in the process of pancreas development in newts, Morozumi Ryosuke, The 56th Annual Meeting of the Japanese Society of Developmental Biologists, 2023/07/22, Without Invitation, Japanese, Sendai International Center
  4. Updating the NBRP as a new resource project for three amphibian model species, Xenopus tropicalis, Xenopus laevis, and Pleurodeles waltl (Iberian ribbed newt), Hajime Ogino, Hajime Ogino, Makoto Suzuki, Takeshi Igawa, Nanoka Suzuki, Toshinori Hayashi, Kazuko Okamoto, Nobuaki Furuno, Ichiro Tazawa, Keisuke Nakajima, Ken-ichi Suzuki, Haruki Ochi and Takashi Kato, 19th International Xenopus Conference, 2023/08/20, Without Invitation, English
  5. Gene expression in the homeotic transformation of tails into limbs in anurans, Sho Morioka, Ichiro Tazawa, Quintin Lau, Yoshio Yaoita, 2019/12, Without Invitation, Japanese
  6. Diversity in development of the intercalary elements that emerge in the first knuckle joints of Neobatrachia, Kensuke Nakanishi, Nao Hasegawa, Koichi Takeo, Ichiro Tazawa, 2019/09/12, Without Invitation, Japanese
  7. Diversity in Development of the Intercalary Elements that Emerge in the First Knuckle Joints of Anurans, Kensuke NAKANISHI, Nao HASEGAWA, Koichi TAKEO, Ichiro TAZAWA, 2018/09/19, Without Invitation, Japanese
  8. Vitamin A-induced homeotic limb formation on dorsal and ventral sides of regenerating tissue of amputated tails of Japanese brown frog tadpoles, Ichiro Tazawa, Yoshio Yaoita, Amphibian development, regeneration, evolution and beyond, 2018/03/13, Without Invitation, English, Hiroshima University Library Hall (Higashi-Hiroshima, Hiroshima, Japan)
  9. Transformation during Anuran Metamorphosis and Regeneration, Yoshio Yaoita, Keisuke Nakajima and Ichiro Tazawa, Amphibian development, Regeneration, Evolution and beyond, 2018/03/13, Without Invitation, English, Hiroshima University Library Hall (Higashi-Hiroshima, Hiroshima, Japan)
  10. Gene expression in anuran homeotic transformation from a tail to limbs, Sho Morioka, Ichiro Tazawa and Yoshio Yaoita, Amphibian development, regeneration, evolution and beyond, 2018/03/13, Without Invitation, English
  11. Location and Orientation of Ectopic Limbs and Expression of Genes Related to Limb Development in Tail-Amputated and Retinoid-Treated Tadpoles of Rana ornativentris, Ichiro TAZAWA, Yoshio YAOITA, The joint meeting of the 22nd International Congress of Zoology and the 87th Meeting of the Zoological Society of Japan, 2016/11/14, Without Invitation, English
  12. National BioResource Project (NBRP) for Xenopus: recent developments at the Asian hub for the international Xenopus research community, Suzuki, A, Kashiwagi, K., Hanada, H., Furuno, N., Tazawa, I., Kurabayashi, A., Nakajima, K., Takebayashi-Suzuki, K., Igawa, T., Sumida, M., Yoshida, H., Murakami, S., Oriha, K., Mido, T., Masumoto, M., Kawaguchi, K., Miura, A. and Kashiwagi, A, 16th International Xenopus Conference, 2016/08/28, Without Invitation, English
  13. National BioResource Project (NBRP) Xenopus (Silurana) tropicalis: Standard High Quality Inbred Strain for Biological Research, Kashiwagi A, Kashiwagi K., Hanada H., Suzuki A., Takebayashi K., Kurabayashi A., Suzuki K., Furuno N., Tazawa I., Nakajima K., Yamamoto T. and Sumida M, Frontiers in Amphibian Biology: Endangered Species Conservation and Genome Editing, 2014/03/27, Without Invitation, English
  14. Induction of homeotic limbs by retinoid treatment on the amputated tails of Japanese anurans, Tazawa I, Yaoita Y, International Symposium, Frontiers in Amphibian Biology: Endangered Species Conservation and Genome Editing, 2014/03/27, Without Invitation, English
  15. National BioResource Project (NBRP) Xenopus tropicalis Mass Production of High Quality Standard Inbred Strains, Kashiwagi A, Kashiwagi K., Hanada H., Suzuki K., Suzuki A., Takebayashi K., Nakajima K., Furuno N., Tazawa I., Kurabayashi A., Yamamoto T. and Sumida M, The 5th ANRRC International Meeting, 2013/11/01, Without Invitation, English
  16. Cloning and characterization of a novel keratin gene (xlk2) which is expressed in the larval epidermis of Xenopus laevis, I. Tazawa, K. Shimizu-Nishikawa, and K. Yoshizato, 2001, Without Invitation, English
  17. Expression of Id family, negative regulators of differentiation, in the regenerating limbs of urodele and anuran, 1999, Without Invitation, Japanese

Social Activities

Organizing Academic Conferences, etc.

  1. Amphibian Development, Regeneration, Evolution and Beyond, 2018/03

History as Peer Reviews of Academic Papers

  1. 2024, Development, Growth & Differentiation, Others, Reviewer, 1
  2. 2024, Zoological Journal of the Linnean Society, Others, Reviewer, 1
  3. 2023, Journal of Developmental Biology, Others, Reviewer, 1
  4. 2021, JEZ Part B: Molecular and Developmental Evolution, Others, Reviewer, 2
  5. 2020, JEZ Part B: Molecular and Developmental Evolution, Others, Reviewer, 1
  6. 2020, Annals of Anatomy, Others, Reviewer, 2
  7. 2019, International Journal of Genomics, Others, Reviewer, 2
  8. 2018, Development, Growth & Differentiation, Others, Reviewer, 2
  9. 2018, Development, Growth & Differentiation, Others, Reviewer, 2