シロイヌナズナ(Arabidopsis thaliana (L.) Heynh.)、タバコ(Nicotiana tabacum L.)、ニンジン(Daucus carota L. cv US-Harumakigosun)、ダイズ(Glycine max L.)

• ニンジン不定胚発生阻害因子4-hydroxybenzyl alcoholおよびその類縁化合物の作用機構の解明
• 光による不定胚形成促進機構の分子レベルでの解明
• inhibitor of apoptosis protein (IAP) の植物におけるパラログであるILP1，2の機能解明
• 培養変異を利用した、新しい育種法の開発

• 1998年 7月　博士(理学)(筑波大学)　(学位論文:Studies on the relationship between the effects of glutamine and the gene expression of glutamine synthetase isoforms during somatic and zygotic embryogenesis in carrot.)

• 1996年 3月　筑波大学大学院 生物科学研究科 博士課程単位取得退学

• 1995年 4月　茨城県農業総合センター 生物工学研究所 流動研究員
• 1998年 3月　生物系特定産業技術研究推進機構 受託研究員(筑波大学)
• 1999年 4月　筑波大学 生物科学系 助手(遺伝子実験センター)
• 2002年 7月　東京理科大学 ゲノム創薬研究センター ポストドクトラル研究員
• 2004年 4月　帝京科学大学 理工学部 バイオサイエンス学科 講師
• 2007年 4月　帝京科学大学 生命環境学部 バイオサイエンス学科（現・生命科学科） 准教授
• 2016年 4月　帝京科学大学 生命環境学部 生命科学科 教授

• ベーシックマスター植物生理学（執筆分担、オーム社）

• Y. Ban, Y. Morita, M. Ogawa, K. Higashi, T. Nakatsuka, M. Nishihara, M. Nakayama (2019) Inhibition of post-transcriptional gene silencing of chalcone synthase genes in petunia picotee petals by fluacrypyrim. J. Exp. Bot., 70:1513-1523.
• 東克己 (2016) 帝京科学大学における安全教育に関する研究．帝京科学大学紀要 11: 137-141.
• 平野祐毅、東克己 (2013) タバコ培養細胞BY-2のエリシター誘導性プログラム細胞死における新規植物細胞死制御候補因子NtILP1の作用についての研究．帝京科学大学紀要 9: 89-96.
• Toshihiro Kobayashi, Youichi Nagayama, Katsumi Higashi, Masatomo Kobayashi (2010) Establishment of a tissue culture system for somatic embryogenesis from germinating embryos of Arabidopsis thaliana. Plant Biotechnology, 27: 359-464.
• Yasuhiro Kadota, Shunsuke Fujii, Youko Ogasawara, Yutaka Maeda, Katsumi Higashi, Kazuyuki Kuchitsu (2006) Continuous Recognition of the Elicitor Signal for Several Hours is Prerequisite for Induction of Cell Death and Prolonged Activation of Signaling Events in Tobacco BY-2 Cells. Plant Cell Physiol. 47: 1337-1142.
• Akira Kikuchi, Nobuya Sanuki, Katsumi Higashi, Tomokazu Koshiba, Hiroshi Kamada (2006) Abscisic acid and stress treatment are essential for the aquisition of embryogenic competence by carrot somatic cells. Planta, 223: 637-645.
• Katsumi Higashi, Ryoko Takasawa, Atsushi Yoshimori, Tatsuaki Goh, Sei-ichi Tanuma, Kazuyuki Kuchitsu (2005) Identification of a novel gene family, paralogs of inhibitor of apoptosis proteins present in plants, fungi, and animals. Apoptosis, 10: 471-480.
• Yasuhiro Kadota, Takashi Watanabe, Shinsuke Fujii, Yutaka Maeda, Ryoko Ohno, Katsumi Higashi, Toshio Sano, Shoshi Muto, Seiichiro Hasezawa, Kazuyuki Kuchitsu (2005) Cell cycle dependence of elicitor-induced signal transduction in tobacco BY-2 cells. Plant Cell Physiology, 46: 156-165.
• Yasuhiro Kadota, Takashi Watanabe, Shinsuke Fujii, Katsumi Higashi, Toshio Sano, Toshiyuki Nagata, Seiichiro Hasezawa, Kazuyuki Kuchitsu (2004) Crosstalk between elicitor-induced cell death and cell cycle regulation in tobacco BY-2 cells, Plant Journal., 40, 131-142.
• Yasuhiro Kadota, Takuya Furuichi, Yoko Ogasawara, Tatsuaki Goh, Katsumi Higashi, Shoshi Muto, Kazuyuki Kuchitsu (2004) Identification of putative voltage-dependent Ca2+-permeable channels involved in cryptogein-induced Ca2+ transients and defense responses in tobacco BY-2 cells. Biochemical and Biophysical Research Communications, 317: 823-830.
• Yasuhiro Kadota, Tatsuaki Goh, Hajime Tomatsu, Ryosuke Tamauchi, Katsumi Higashi, Shoshi Muto, Kazuyuki Kuchitsu (2004) Cryptogein-induced initial events in tobacco BY-2 cells: Pharmacological characterization of molecular relationship among cytosolic Ca2+ transients, anion efflux and production of reactive oxygen species. Plant Cell Physiology, 45: 160-170.
• Chang-Ho Eun, Suk-Min Ko, Katsumi Higashi, Dennis Yeo, Yoshikatsu Matsubayashi, Youji Sakagami, Hiroshi Kamada (2003) Phytosulfokine-a, a peptidyl plant growth factor, stimulates cell cycle progression in carrot non-embryogenic cells. Plant Biotechnology. 20:195-205.
• Toshiyuki Ogawara, Katsumi Higashi, Hiroshi Kamada, Hiroshi Ezura (2003) Ethylene advances the transition from vegetative growth to flowering in Arabidopsis thaliana. Journal of Plant Physiology, 160: 1335-1340.
• Toshihiro Kobayashi, Katsumi Higashi, Hiroshi Kamada (2003) 4-Hydroxybenzyl alcohol accumulates in flowers and developing fruits of carrot and inhibits seed formation. Journal of Plant Physiology 160: 713-716.
• Toshihiro Kobayashi, Katsumi Higashi, Hiroshi Kamada (2001) 4-Hydroxy-benzylalcohol accumulates in suspension-cell cultures and inhibits somatic embryogenesis in carrot. Physiologia Plantrum, 112: 280-284.
• Sukmin Ko, Siripong Thitamadee, Heping Yang, Chang-Ho Eun, Kimiyo Sage Ono, Katsumi Higashi, Shinobu Satoh & Hiroshi Kamada (2001) Comparison and characterization of cis-regulatory regions in some embryo-specific and ABA-responsive carrot genes, DcECPs. Plant Biotechnology, 18: 45-54. 　
• Sumie Kato-Emori, Katsumi Higashi, Kazushige Hosoya, Toshihiro Kobayashi, Hiroshi, Ezura (2001) Cloning and characterization of the gene encoding 3-hydroxy-3-methylglutaryl coenzyme A reductase in melon (Cucumis melo L. reticulatus). Molecular and General Genetics, 265: 135-142.
• Toshihiro Kobayashi, Katsumi Higashi, Hiroshi Kamada (2000) Inhibitory effects of p-hydroxybenzyl alcohol on somatic embryogenesis in carrot cell cultures. Plant Biotechnology, 17: 87-92.
• Toshihiro Kobayashi, Katsumi Higashi, Kazuo Sasaki, Tadao Asami, Shigeo Yoshida, Hiroshi Kamada (2000) Purification from conditioned medium and chemical identification of a factor that inhibits somatic embryogenesis in carrot. Plant Cell Physiology, 41: 268-273.
• Hiroshi Ezura, Katsumi Higashi, Nicholas P. Harberd (1999) Phytochrome B influences in vitro shoot regeneration in Arabidopsis thaliana (L.) Heynh. Plant Biotechnology, 16: 279-284.
• Kumi Sato-Nara, Ken-ichi Yuhashi, Katsumi Higashi, Kazushige Hosoya, Mitsuru Kubota, Hiroshi Ezura (1999) Stage- and tissue-specific expression of ethylene receptor homolog genes during fruit development in muskmelon. Plant Physiology, 119: 321-329.
• Toshihiro Kobayashi, Katsumi Higashi, Tsutomu Saitou, Hiroshi Kamada (1999) Physiological properties of inhibitory conditioning factor (s), inhibitory to somatic embryogenesis, in high-density cultures of carrot. Plant Science, 144: 69-75.
• Katsumi Higashi, Kazushige Hosoya, Kumi Sato-Nara, Hiroshi Ezura (1999) Histological analysis of fruit development between two melon (Cucumis melo L. reticulatus) genotypes setting a different size of fruit. Journal of Experimental Botany, 50: 1593-1597.
• Tomohiro Kiyosue, Hajime Shiota, Katsumi Higashi, Hiroshi Kamada, Kazuo Shinozaki (1998) A chromo box gene from carrot (Daucus carota L.): its cDNA structure and expression during somatic and zygotic embryogenesis. Biochemistry and Biophysics Acta, 1398: 42-46.
• Kazuo Sasaki, Yoshiharu Iida, Katsumi Higashi, Michiko Daita, Toshihiro Kobayashi, Hiroshi Harad, Hiroshi Kamada (1998) Detection of glycoproteins in carrot somatic embryos induced by 2,4-D or stress treatment. Plant Biotechnology, 15: 241-243.
• Katsumi Higashi, Michiko Daita, Toshihiro Kobayashi, Kazuo Sasaki, Hiroshi Harada, Hiroshi Kamada (1998) Inhibitory conditioning for carrot somatic embryogenesis in high cell density. Plant Cell Report, 18: 2-6.
• Katsumi Higashi, Hajime Shiota, Hiroshi Kamada (1998) Patterns of expression of the genes for glutamine synthetase isoforms during somatic and zygotic embryogenesis in carrot. Plant Cell Physiology, 39: 418-424.
• Akiko Ojima, Hajime Shiota, Katsumi Higashi, Hiroshi Kamada, Yoh-ichi Shimma, Masato Wada, Shinobu Satoh (1997) An extracellular insoluble inhibitor of cysteine proteinases in cell cultures and seeds of carrot. Plant Molecular Biology, 34: 99-109.
• Katsumi Higashi, Hiroshi Kamada, Hiroshi Harada (1996) The effects of reduced nitrogenous compounds suggest that glutamine synthetase activity is involved in the development of somatic embryos in carrot. Plant Cell, Tissue and Organ Culture, 45: 109-114.
• Tomohiro Kiyosue, Kazuko Yamaguchi-Shinozaki, Kazuo Shinozaki, Katsumi Higashi, Shinobu Satoh, Hiroshi Kamada, Hiroshi Harada (1992) Isolation and characterization of a cDNA that encodes ECP31, an embryogenic-cell protein from carrot. Plant Molecular Biology, 19: 239-249.

• 日本植物学会
• 日本植物生理学会
• 日本植物細胞分子生物学会
• American Society of Plant Biologists

• 筑波学都資金財団特別表彰(2001)