Research activity information

• Exposing larvae to night lighting inhibits embryonic diapause in the next generation in the domestic silkworm, Bombyx mori.

  Aya Iwamoto, Yuichi Egi, Katsuhiko Sakamoto

  Corresponding, May 2024, Journal of Scientific Research, 16(2) (2), 575 - 578

  [Refereed]


• Photoperiodic gene expression of insulin receptor is associated with diapause regulation in silkworm

  Aya IWAMOTO, Yuichi EGI, Katsuhiko, SAKAMOTO

  Corresponding, Dec. 2023, European Journal of Biological Research, 13(4) (4), 211 - 217, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Locations of Rab, Allatotropin, Prothoracicotropic hormone and Period in the larval brain, corpus allatum and frontal ganglion of Bombyx mori

  Asuka MATSUI, Makoto TOKUSHIGE, Akira MIZOGUCHI, Kengo KANAMARU, Katsuhiko SAKAMOTO, Yuichi UNO, Tomohide UNO

  Biology Centre, AS CR, Mar. 2023, European Journal of Entomology, 120, 93 - 104, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Compensation mechanism for membrane potential against hypoosmotic stress in the Onchidium neuron

  Takako Nishi, Katsuhiko Sakamoto, Ryota Matsuo

  Elsevier BV, Dec. 2022, Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 274, 111298 - 111298

  [Refereed]

  Scientific journal


• Opsins in the Cephalic and Extracephalic Photoreceptors in the Marine Gastropod Onchidium verruculatum

  Ryota Matsuo, Sanae Kotoh, Kiyotaka Takishita, Katsuhiko Sakamoto, Tatsuya Uebi, Mamiko Ozaki, Yuko Matsuo, Takako Nishi

  University of Chicago Press, Dec. 2022, The Biological Bulletin, 243(3) (3), 339 - 352

  [Refereed]

  Scientific journal


• Genome-wide screening of genes involved in programming diapause in the next generation in silkworm, Bombyx mori (Lepidoptera: Bombycidae)

  Yuichi EGI, Katsuhiko SAKAMOTO

  Corresponding, Biology Centre, AS CR, Nov. 2022, European Journal of Entomology, 119, 405 - 412

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Localization of SNARE proteins in the brain and corpus allatum of Bombyx mori

  Mako Sasao, Tomohide Uno, Risa Kitagawa, Asuka Matsui, Fumika Toryu, Akira Mizoguchi, Kengo Kanamaru, Katsuhiko Sakamoto, Yuichi Uno

  Springer Science and Business Media LLC, Sep. 2022, Histochemistry and Cell Biology, 159(2) (2), 199 - 208

  [Refereed]

  Scientific journal


• Silkworm larvae (Bombyx mori) can learn cues associated with finding food.

  Tomohisa TAKAHASHI, Takumi HASEGAWA, Yuichi EGI, Katsuhiko SAKAMOTO

  Corresponding, Oct. 2021, European Journal of Biological Research, 11(4) (4), 519 - 523

  [Refereed]

  Link to Kobe Univ. Repository (Kernel)


• Relationship between Rab and insulin-like proteins in the nervous system of Bombyx mori

  Tomohide UNO, Yusuke OZAKIYA, Mako SASAO, Katsuhiko SAKAMOTO, Yasuo YAMAUCHI, Yuichi UNO, Kengo KANAMARU, Akira MIZOGUCHI

  Oct. 2021, European Journal of Entomology, 118, 307 - 314, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Memory dysfunction and anxiety-like behavior in a mouse model of chronic sleep disorders

  Katsuhiko Sakamoto, Sayaka Higo-Yamamoto, Yuichi Egi, Koyomi Miyazaki, Katsutaka Oishi

  Lead, Elsevier BV, Aug. 2020, Biochemical and Biophysical Research Communications, 529(2) (2), 175 - 179

  [Refereed]

  Scientific journal


• Chronically skipping breakfast impairs hippocampal memory-related gene expression and memory function accompanied by reduced wakefulness and body temperature in mice

  Hiroki Okauchi, Sayaka Higo-Yamamoto, Takumi Sowa, Hideaki Oike, Saori Yamamoto, Naoyuki Wada, Katsuhiko Sakamoto, Katsutaka Oishi

  Elsevier BV, Mar. 2020, Biochemical and Biophysical Research Communications, 524(1) (1), 129 - 134

  [Refereed]

  Scientific journal


• Functional characterization of insect-specific RabX6 of Bombyx mori

  Tomohide UNO, Yusuke OZAKIYA, Masayuki FURUTANI, Katsuhiko SAKAMOTO, Yuichi UNO, Kengo KANAMARU, Akira MIZOGUCHI

  Jan. 2019, Histochemistry and Cell Biology, 151, 187 - 198, English

  [Refereed]

  Scientific journal


• Responses of the chloroplast glyoxalase system to high CO2 concentrations.

  Ginga SHIMAKAWA, Kentaro IFUKU, Yuji SUZUKI, Amane MAKINO, Kimitsune ISHIZAKI, Hiroshi FUKAYAMA, Ryutaro MORITA, Katsuhiko SAKAMOTO, Akiko NISHI, Chikahiro MIYAKE

  Dec. 2018, Bioscience, Biotechnology and Biochemistry, 82(12) (12), 2072 - 2083, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Effects of mild and low temperature incubation on heat tolerance in Bombyx mori embryos.

  Daisuke MATSUOKA, Katsuhiko SAKAMOTO

  Corresponding, Jul. 2018, American Journal of Entomology, 2(2) (2), 6 - 9, English

  [Refereed]

  Scientific journal


• Localization and functional analysis of the insect-specific RabX4 in the brain of Bombyx mori

  Tomohide Uno, Masayuki Furutani, Katsuhiko Sakamoto, Yuichi Uno, Kengo Kanamaru, Akira Mizoguchi, Susumu Hiragaki, Makio Takeda

  Sep. 2017, ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY, 96(1) (1), English

  [Refereed]

  Scientific journal


• Genome-wide microarray screening for Bombyx mori genes related to transmitting the determination outcome of whether to produce diapause or nondiapause eggs

  Shion Akitomo, Yuichi Egi, Yuki Nakamura, Yoshitaka Suetsugu, Katsutaka Oishi, Katsuhiko Sakamoto

  Corresponding, Apr. 2017, INSECT SCIENCE, 24(2) (2), 187 - 193, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Rab proteins in the brain and corpus allatum of Bombyx mori

  Tomohide Uno, Masayuki Furutani, Chihiro Watanabe, Katsuhiko Sakamoto, Yuichi Uno, Kengo Kanamaru, Hiroshi Yamagata, Akira Mizoguchi, Makio Takeda

  Jul. 2016, HISTOCHEMISTRY AND CELL BIOLOGY, 146(1) (1), 59 - 69, English

  [Refereed]

  Scientific journal


• Does DNA methylation play a role in photoperiodic diapause of moths?

  Yuichi EGI, Hiroki TSUBOUCHI, SAKAMOTO KATSUHIKO

  The present study pharmacologically investigated the involvement of DNA methylation in photoperiodic diapause of the domestic silkworm Bombyx mori (Lepidoptera: Bombycidae) and the Chinese giant silkmoth Antheraea pernyi (Lepidoptera: Saturniidae). The DNA methyltransferase inhibitor 5-azacytidine was dietarily given to larvae of B. mori under short days or long days. However,

  Corresponding, AkiNik Publications, Jul. 2016, Journal of Entomology and Zoology Studies, 4(4) (4), 458 - 460, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Suppression of Chloroplastic Alkenal/One Oxidoreductase Represses the Carbon Catabolic Pathway in Arabidopsis Leaves during Night

  Daisuke Takagi, Kentaro Ifuku, Ken-ichi Ikeda, Kanako Ikeda Inoue, Pyoyun Park, Masahiro Tamoi, Hironori Inoue, Katsuhiko Sakamoto, Ryota Saito, Chikahiro Miyake

  Apr. 2016, PLANT PHYSIOLOGY, 170(4) (4), 2024 - 2039, English

  [Refereed]

  Scientific journal


• Daily rhythm of insecticide susceptibility in the silkworm Bombyx mori

  Yuichi Egi, Katsuhiko Sakamoto

  Corresponding, Mar. 2016, BIOLOGICAL RHYTHM RESEARCH, 47(2) (2), 247 - 252, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Daily locomotor activity of the parasitoid wasp Meteorus pulchricornis (Hymenoptera: Braconidae) that attacks exposed lepidopteran larvae

  Takuma Nishimura, Tomohiro Fujii, Katsuhiko Sakamoto, Kaoru Maeto

  Nov. 2015, APPLIED ENTOMOLOGY AND ZOOLOGY, 50(4) (4), 525 - 531, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• D2-like dopamine receptors mediate regulation of pupal diapause in Chinese oak silkmoth Antheraea pernyi

  Qiushi Wang, Ikumi Hanatani, Makio Takeda, Katsutaka Oishi, Katsuhiko Sakamoto

  Corresponding, Apr. 2015, ENTOMOLOGICAL SCIENCE, 18(2) (2), 193 - 198, English

  [Refereed]

  Scientific journal


• FLAVODIIRON2 and FLAVODIIRON4 Proteins Mediate an Oxygen-Dependent Alternative Electron Flow in Synechocystis sp PCC 6803 under CO2-Limited Conditions

  Ginga Shimakawa, Keiichiro Shaku, Akiko Nishi, Ryosuke Hayashi, Hiroshi Yamamoto, Katsuhiko Sakamoto, Amane Makino, Chikahiro Miyake

  Feb. 2015, PLANT PHYSIOLOGY, 167(2) (2), 472 - U732, English

  [Refereed]

  Scientific journal


• Melatonin pathway transmits information to terminate pupal diapause in the Chinese oak silkmoth Antheraea pernyi and through reciprocated inhibition of dopamine pathway functions as a photoperiodic counter

  Qiushi Wang, Yuichi Egi, Makio Takeda, Katsutaka Oishi, Katsuhiko Sakamoto

  Corresponding, Jan. 2015, ENTOMOLOGICAL SCIENCE, 18(1) (1), 74 - 84, English

  [Refereed]

  Scientific journal


• Silkworm strains that can be clearly destined towards either embryonic diapause or direct development by adjusting a single ambient parameter during the preceding generation

  Yuichi Egi, Shion Akitomo, Tsuguru Fujii, Yutaka Banno, Katsuhiko Sakamoto

  Corresponding, Oct. 2014, ENTOMOLOGICAL SCIENCE, 17(4) (4), 396 - 399, English

  [Refereed]

  Scientific journal


• Characterization of Rab-interacting lysosomal protein in the brain of Bombyx mori

  Tomohide Uno, Yuri Isoyama, Kazuki Sakamoto, Yuichi Uno, Katsuhiko Sakamoto, Kengo Kanamaru, Hiroshi Yamagata, Michihiro Takagi, Akira Mizoguchi, Makio Takeda

  Mar. 2014, HISTOCHEMISTRY AND CELL BIOLOGY, 141(3) (3), 311 - 320, English

  [Refereed]

  Scientific journal


• The clock protein PERIOD is expressed in goblet cells of the larval midgut in the silkworm, Bombyx mori

  Moon Soo Park, Yuichi Egi, Makio Takeda, Katsuhiko Sakamoto

  Corresponding, 2014, BIOLOGICAL RHYTHM RESEARCH, 45(3) (3), 369 - 374, English

  [Refereed]

  Scientific journal


• Functional Analysis of the AKR4C Subfamily of Arabidopsis thaliana: Model Structures, Substrate Specificity, Acrolein Toxicity, and Responses to Light and [CO2]

  Ryota Saito, Ginga Shimakawa, Akiko Nishi, Tatsuya Iwamoto, Katsuhiko Sakamoto, Hiroshi Yamamoto, Katsumi Amako, Amane Makino, Chikahiro Miyake

  Oct. 2013, BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY, 77(10) (10), 2038 - 2045, English

  [Refereed]

  Scientific journal


• Scavenging systems for reactive carbonyls in the cyanobacterium synechocystis sp. PCC 6803

  Ginga Shimakawa, Mayumi Suzuki, Eriko Yamamoto, Akiko Nishi, Ryota Saito, Katsuhiko Sakamoto, Hiroshi Yamamoto, Amane Makino, Chikahiro Miyake

  Japan Society for Bioscience, Biotechnology, and Agrochemistry, 2013, Bioscience, Biotechnology and Biochemistry, 77(12) (12), 2441 - 2448, English

  [Refereed]

  Scientific journal


• Photoreception in decapitated larvae of silkworm Bombyx mori

  Hiroyuki Nobata, Katsutaka Oishi, Makio Takeda, Katsuhiko Sakamoto

  Corresponding, Oct. 2012, ENTOMOLOGICAL SCIENCE, 15(4) (4), 392 - 399, English

  [Refereed]

  Scientific journal


• FGF21 is dispensable for hypothermia induced by fasting in mice

  Katsutaka Oishi, Katsuhiko Sakamoto, Morichika Konishi, Yusuke Murata, Nobuyuki Itoh, Hiroyoshi Sei

  2010, NEUROENDOCRINOLOGY LETTERS, 31(2) (2), 198 - 202, English

  [Refereed]

  Scientific journal


• Period-phase map: two-dimensional selection of circadian rhythm-related genes

  R. Morioka, M. Arita, K. Sakamoto, S. Kawaguchi, H. Tei, K. Horimoto

  Nov. 2009, IET SYSTEMS BIOLOGY, 3(6) (6), 487 - 495, English

  [Refereed]

  Scientific journal


• Clock gene expression in the rat retina: Effects of lighting conditions and photoreceptor degeneration

  Gianluca Tosini, Manami Kasamatsu, Katsuhiko Sakamoto

  Elsevier BV, Jul. 2007, Brain Research, 1159, 134 - 140

  [Refereed]

  Scientific journal


• Intraocular injection of kainic acid does not abolish the circadian rhythm of arylalkylamine N-acetyltransferase mRNA in rat photoreceptors.

  Katsuhiko Sakamoto, Cuimei Liu, Manami Kasamatsu, P Michael Iuvone, Gianluca Tosini

  Lead, Feb. 2006, Molecular Vision, 12, 117 - 124

  [Refereed]


• Dopamine regulates melanopsin mRNA expression in intrinsically photosensitive retinal ganglion cells

  Katsuhiko Sakamoto, Cuimei Liu, Manami Kasamatsu, Nikita V. Pozdeyev, P. Michael Iuvone, Gianluca Tosini

  Lead, Wiley, Dec. 2005, European Journal of Neuroscience, 22(12) (12), 3129 - 3136

  [Refereed]

  Scientific journal


• Molecular cloning of a cDNA encoding arylalkylamineN-acetyltransferase from the testicular system ofPeriplaneta americana: Primary protein structure and expression analysis

  Jadwiga Bembenek, Katsuhiko Sakamoto, Makio Takeda

  Wiley, Aug. 2005, Archives of Insect Biochemistry and Physiology, 59(4) (4), 219 - 229

  [Refereed]

  Scientific journal


• Classical Photoreceptors RegulateMelanopsinmRNA Levels in the Rat Retina

  Katsuhiko Sakamoto, Cuimei Liu, Gianluca Tosini

  Recent studies have demonstrated that melanopsin is a key photopigment in the mammalian circadian system. This novel opsin is exclusively expressed in retinal ganglion cells that are intrinsically sensitive to light, perhaps responding via a melanopsin-based signaling pathway. Previous investigations using transgenic mice have also demonstrated that ablation of the classical photoreceptors and of melanopsin prevents entrainment of several circadian rhythms, thus demonstrating that these photoreceptors are necessary and sufficient for circadian photoreception. In this study, we investigated the effect of photoreceptor degeneration onmelanopsinmRNA regulation in RCS/N-rdyrats (Royal College of Surgeons rats with a defect in the retinal dystrophy gene). We used animals at postnatal day 21 (P21), P33, P45, and P60. At P60 degeneration of the retina in RCS/N-rdyhas advanced to the point where the majority of the photoreceptors have degenerated. Our data indicate thatmelanopsinmRNA levels were rhythmic in light/dark cycle and in constant darkness in congenic controls (RCS/N-rdy⁺) and in RCS/N-rdyat P21 (i.e., before the degeneration of the photoreceptors). On the other hand, in RCS/N-rdyat P60,melanopsinmRNA levels were greatly reduced (<90%) and not rhythmic. Photoreceptor degeneration did not affect the expression ofpituitary adenylate cyclase-activating polypeptidemRNA (a marker for melanopsin-containing ganglion cells). Our results suggest that classical photoreceptors (rods and cones) regulate the expression ofmelanopsinmRNA in the rat. Because RCS/N-rdyrats are a model for studies on retinitis pigmentosa in human, our data may provide an important insight on melanopsin function in patients affected by retinitis pigmentosa.

  Lead, Society for Neuroscience, Oct. 2004, The Journal of Neuroscience, 24(43) (43), 9693 - 9697

  [Refereed]

  Scientific journal


• Circadian rhythms in the retina of rats with photoreceptor degeneration

  Katsuhiko Sakamoto, Cuimei Liu, Gianluca Tosini

  Lead, Wiley, Aug. 2004, Journal of Neurochemistry, 90(4) (4), 1019 - 1024

  [Refereed]

  Scientific journal


• Feeding is not a more potent Zeitgeber than the light-dark cycle in Drosophila

  Katsutaka Oishi, Masayuki Shiota, Katsuhiko Sakamoto, Manami Kasamatsu, Norio Ishida

  Ovid Technologies (Wolters Kluwer Health), Mar. 2004, NeuroReport, 15(4) (4), 739 - 743

  [Refereed]

  Scientific journal


• Light-Induced Phase-Shifting of the Peripheral Circadian Oscillator in the Hearts of Food-Deprived Mice

  Katsuhiko SAKAMOTO, Koji KADOTA, Katsutaka OISHI

  Japanese Association for Laboratory Animal Science, 2004, Experimental Animals, 53(5) (5), 471 - 474

  [Refereed]

  Scientific journal


• Bimodal circadian expression of serotonin N-acetyltransferase mRNA in the retina of rats under restricted feeding

  Katsutaka Oishi, Katsuhiko Sakamoto, Norio Ishida

  Lead, Elsevier BV, Nov. 2003, Neuroscience Letters, 351(1) (1), 21 - 24

  [Refereed]

  Scientific journal


• Teleost multiple tissue (tmt) opsin: a candidate photopigment regulating the peripheral clocks of zebrafish?

  Paraskevi Moutsaki, David Whitmore, James Bellingham, Katsuhiko Sakamoto, Zoë K. David-Gray, Russell G. Foster

  Elsevier BV, Apr. 2003, Molecular Brain Research, 112(1-2) (1-2), 135 - 145

  [Refereed]

  Scientific journal


• Cloning of Cyc (Bmal1) homolog in Bombyx mori: structural analysis and tissue specific distributions.

  Markova EP, Ueda H, Sakamoto K, Oishi K, Shimada T, Takeda M

  Mar. 2003, Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology, 134(3) (3), 535 - 542, English

  [Refereed]

  Scientific journal


• Effect of Carotenoid Depletion on the Hatching Rhythm of the Silkworm, Bombyx mori

  Katsuhiko Sakamoto, Rihito Asai, Atsushi Okada, Isamu Shimizu

  Lead, Informa UK Limited, Feb. 2003, Biological Rhythm Research, 34(1) (1), 61 - 71

  [Refereed]

  Scientific journal


• Differential expressions of mPer1 and mPer2 mRNAs under a skeleton photoperiod and a complete light–dark cycle

  Katsutaka Oishi, Hiromi Fukui, Katsuhiko Sakamoto, Koyomi Miyazaki, Hisato Kobayashi, Norio Ishida

  Lead, Elsevier BV, Dec. 2002, Molecular Brain Research, 109(1-2) (1-2), 11 - 17

  Scientific journal


• Circadian expression of clock genes during ontogeny in the rat heart

  Katsuhiko Sakamoto, Katsutaka Oishi, Takahiro Nagase, Koyomi Miyazaki, Norio Ishida

  Lead, Ovid Technologies (Wolters Kluwer Health), Jul. 2002, Neuroreport, 13(10) (10), 1239 - 1242

  [Refereed]

  Scientific journal


• Photoperiod Differentially Affects the Expression of Three mPer Genes in the Mouse Heart

  Katsuhiko Sakamoto

  Informa UK Limited, Feb. 2002, Biological Rhythm Research, 33(1) (1), 75 - 81

  [Refereed]

  Scientific journal


• Ontogeny of circadian expression of serotonin N-acetyltransferase mRNA in the rat retina

  Katsuhiko Sakamoto, Katsutaka Oishi, Norio Ishida

  Lead, Elsevier BV, Jan. 2002, Neuroscience Letters, 317(1) (1), 53 - 55

  [Refereed]

  Scientific journal


• Photoperiodic and circadian photoreception in the silkworm, Bombyx mori.

  Shimizu, I., Sakamoto, K. and Iwasa

  2002, Journal of Photoscience, 9, 17 - 20

  [Refereed]


• Promoter Analysis for Daily Expression of Drosophila timeless Gene

  Tetsuya Okada, Takaomi Sakai, Takehide Murata, Koichiro Kako, Katsuhiko Sakamoto, Michiko Ohtomi, Tatsuo Katsura, Norio Ishida

  Elsevier BV, May 2001, Biochemical and Biophysical Research Communications, 283(3) (3), 577 - 582

  [Refereed]

  Scientific journal


• Two circadian oscillatory mechanisms in the mammalian retina

  Katsuhiko Sakamoto, Katsutaka Oishi, Maki Shiraishi, Satoshi Hamano, Hitoki Otsuka, Yoshiaki Miyake, Norio Ishida

  Lead, Ovid Technologies (Wolters Kluwer Health), Dec. 2000, NeuroReport, 11(18) (18), 3995 - 3997

  [Refereed]

  Scientific journal


• The pineal gland is not essential for circadian expression of rat period homologue (rper2) mRNA in the suprachiasmatic nucleus and peripheral tissues

  Katsutaka Oishi, Ichiro Murai, Katsuhiko Sakamoto, Hitoki Otsuka, Yoshiaki Miyake, Takahiro Nagase, Norio Ishida

  Elsevier BV, Dec. 2000, Brain Research, 885(2) (2), 298 - 302

  [Refereed]

  Scientific journal


• Light-induced phase-shifts in the circadian expression rhythm of mammalian Period genes in the mouse heart

  Katsuhiko Sakamoto, Norio Ishida

  Lead, Wiley, Nov. 2000, European Journal of Neuroscience, 12(11) (11), 4003 - 4006

  [Refereed]

  Scientific journal


• Temporal expression pattern of circadian clock genes in the maternal and fetal heart and placenta of rats.

  Otsuka, H, Sakamoto, K, Oishi, K, Miyake, Y, Sato, K, Ishida, N

  2000, Acta Obstetrica et Gynaecologica Japonica, 52, 11 - 18

  [Refereed]


• Molecular cloning of the cone-rod homeobox gene (Crx) from the rat and its temporal expression pattern in the retina under a daily light-dark cycle

  K Sakamoto, K Oishi, T Okada, Y Onuma, K Yokoyama, K Sugimoto, N Ishida

  Feb. 1999, NEUROSCIENCE LETTERS, 261(1-2) (1-2), 101 - 104, English

  [Refereed]

  Scientific journal


• Antiphase circadian expression between BMAL1 and period homologue mRNA in the suprachiasmatic nucleus and peripheral tissues of rats

  K Oishi, K Sakamoto, T Okada, T Nagase, N Ishida

  Dec. 1998, BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 253(2) (2), 199 - 203, English

  [Refereed]

  Scientific journal


• Humoral signals mediate the circadian expression of rat period homologue (rPer2) mRNA in peripheral tissues

  Katsutaka Oishi, Katsuhiko Sakamoto, Tetsuya Okada, Takahiro Nagase, Norio Ishida

  Elsevier BV, Nov. 1998, Neuroscience Letters, 256(2) (2), 117 - 119

  [Refereed]

  Scientific journal


• Multitissue Circadian Expression of Rat periodHomolog (rPer2) mRNA Is Governed by the Mammalian Circadian Clock, the Suprachiasmatic Nucleus in the Brain

  Katsuhiko Sakamoto, Takahiro Nagase, Hiromi Fukui, Kazumasa Horikawa, Tetsuya Okada, Hitoshi Tanaka, Kazuo Sato, Yoshiaki Miyake, Osamu Ohara, Koichiro Kako, Norio Ishida

  Lead, Elsevier BV, Oct. 1998, Journal of Biological Chemistry, 273(42) (42), 27039 - 27042

  [Refereed]

  Scientific journal


• COMPARATIVE STUDIES ON THE COMPOUND EYES OF LARVAE AND ADULTS OF AN AESCHNID DRAGONFLY,ANAX NIGROFASCIATUS NIGROFASCIATUS.(I) DORSAL PART

  Katsuhiko Sakamoto, Takaharu Seki, Sachiko Koseki, Takahito Kashiwagi, Eisuke Eguchi

  Lead, Worldwide Dragonfly Association, Oct. 1998, International Journal of Odonatology, 1(1) (1), 15 - 31

  [Refereed]

  Scientific journal


• Molecular cloning of serotonin N-acetyltransferase gene from the mouse and its daily expression in the retina

  Katsuhiko Sakamoto, Norio Ishida

  Lead, Elsevier BV, Jul. 1998, Neuroscience Letters, 250(3) (3), 181 - 184

  [Refereed]

  Scientific journal


• The Localization of the Site of ArylalkylamineN-Acetyltransferase Circadian Expression in the Photoreceptor Cells of Mammalian Retina

  Tomoko Niki, Toshiyuki Hamada, Michiko Ohtomi, Katsuhiko Sakamoto, Satoru Suzuki, Koichrou Kako, Yasuhiko Hosoya, Kazumasa Horikawa, Norio Ishida

  Elsevier BV, Jul. 1998, Biochemical and Biophysical Research Communications, 248(1) (1), 115 - 120

  [Refereed]

  Scientific journal


• Two Visual Pigments In A Single Photoreceptor Cell: Identification And Histological Localization Of Three Mrnas Encoding Visual Pigment Opsins In The Retina Of The Butterfly Papilio Xuthus

  Junko Kitamoto, Katsuhiko Sakamoto, Koichi Ozaki, Yuji Mishina, Kentaro Arikawa

  ABSTRACT This paper describes the localization of newly identified visual pigment opsins in the tiered retina of the Japanese yellow swallowtail Papilio xuthus. We first cloned three cDNAs encoding visual pigment opsins, PxRh1, PxRh2 and PxRh3, and then carried out histological in situ hybridization to localize their mRNAs in the retina. By combining the present data with our previous electrophysiological results, we concluded that both PxRh1 and PxRh2 correspond to visual pigments expressed in photoreceptor cells sensitive in the green wavelength region (green receptors), whereas PxRh3 corresponds to a pigment in red receptors. The in situ hybridization studies showed that some photoreceptor cells express two opsin mRNAs. In the ventral half of the eye, all green receptors in the distal tier were labelled by both PxRh1 and PxRh2 probes. The labelling by the PxRh2 and PxRh3 probes was detected throughout the eye in the proximal tier; in 18 % of ommatidia, the probes labelled the same photoreceptor cell. These results suggest that the possible co-localization of two different visual pigments will broaden the sensitivity spectrum of the photoreceptor cells.

  The Company of Biologists, May 1998, Journal of Experimental Biology, 201(9) (9), 1255 - 1261

  [Refereed]

  Scientific journal


• Circadian expression of serotonin N-acetyltransferase mRNA in the rat retina

  Katsuhiko Sakamoto, Norio Ishida

  Lead, Elsevier BV, Apr. 1998, Neuroscience Letters, 245(2) (2), 113 - 116

  [Refereed]

  Scientific journal


• Cloning of genes encoding the visual pigments in the silkworm, Bombyx mori

  Isamu Shimizu, Yoshinori Yamakawa, Toshifumi Minamoto, Katsuhiko Sakamoto

  Corresponding, Japanese Society of Applied Entomology & Zoology, 1998, Applied Entomology and Zoology, 33(1) (1), 199 - 204

  [Refereed]

  Scientific journal


• Two Opsins From the Compound Eye of the Crab Hemigrapsus Sanguineus

  Katsuhiko Sakamoto, Osamu Hisatomi, Fumio Tokunaga, Eisuke Eguchi

  ABSTRACT The primary structures of two opsins from the brachyuran crab Hemigrapsus sanguineus were deduced from the cDNA nucleotide sequences. Both deduced proteins were composed of 377 amino acid residues and included residues highly conserved in visual pigments of other species, and the proteins were 75 % identical to each other. The distribution of opsin transcripts in the compound eye, determined by in situ hybridization, suggested that the mRNAs of the two opsins were expressed simultaneously in all of the seven retinular cells (R1–R7) forming the main rhabdom in each ommatidium. Two different visual pigments may be present in one photoreceptor cell in this brachyuran crab. The spectral sensitivity of the compound eye was also determined by recording the electroretinogram. The compound eye was maximally sensitive at about 480 nm. These and previous findings suggest that both opsins of this brachyuran crab produce visual pigments with maximal absorption in the blue-green region of the spectrum. Evidence is presented that crustaceans possess multiple pigment systems for vision.

  Lead, The Company of Biologists, Feb. 1996, Journal of Experimental Biology, 199(2) (2), 441 - 450

  [Refereed]

  Scientific journal


• Comparison of DNA Sequences of Exon-4 or Exon-5 in Visual Pigment Genes between Amphidromous and Landlocked Ayu-fish, Plecoglossus Altivelis.

  Isamu SHIMIZU, Masaki UEDA, Katsuhiko SAKAMOTO, Osamu HISATOMI, Fumio TOKUNAGA

  Japan Academy, 1995, Proceedings of the Japan Academy, Series B, 71(2) (2), 84 - 86

  [Refereed]

  Scientific journal


• Photosensitivity in the Circadian Hatching Rhythm of the Carotenoid-Depleted Silkworm, Bombyx mori

  Katsuhiko Sakamoto, Isamu Shimizu

  Silkworms ( Bombyx mori) were reared on a carotenoid-deprived artificial diet, and the carotenoid-depleted eggs of the next generation were incubated so that we could observe the effect of the depletion on the circadian rhythm of hatching. The phototactic response curves of newly hatched larvae showed that the visual photosensitivity in ocelli of larvae from the carotenoid-depleted eggs was at least 4 log units lower than that of a carotenoid-rich control group. However, the phase-shift experiment revealed that carotenoid depletion did not reduce the photosensitivity in the hatching rhythm. When the hatching rhythm was generated by exposure to a single light pulse in constant darkness, the first peak in the rhythm of the carotenoid-depleted silkworms occurred significantly earlier than that of the carotenoid-rich group, but the following second peaks of both groups were found at the same time. These results suggest that for the silkworm, carotenoid is not involved in photoreception for the hatching rhythm, but is involved in the timing of hatching.

  Lead, SAGE Publications, Mar. 1994, Journal of Biological Rhythms, 9(1) (1), 61 - 70

  [Refereed]

  Scientific journal

• Bimodal circadian expression of serotonin N-acetyltransferase mRNA in the retina of rats under restricted feeding

  K Oishi, K Sakamoto, N Ishida

  Nov. 2003, NEUROSCIENCE LETTERS, 351(1) (1), 21 - 24, English


• Ontogeny of circadian expression of serotonin N-acetyltransferase mRNA in the rat retina

  K Sakamoto, K Oishi, N Ishida

  Jan. 2002, NEUROSCIENCE LETTERS, 317(1) (1), 53 - 55, English

• カイコにおける暗期光中断を用いた休眠制御関連遺伝子の探索

  岩本彩, 坂本克彦

  関西昆虫学研究会2023年度大会, Dec. 2023


• カイコ幼虫に対する夜間の光照射が，幼虫の生育及び次世代卵の休眠に及ぼす影響.

  岩本彩, 寺島夕稀, 江木雄一, 坂本克彦

  日本農芸化学会関西支部 第523回講演会, Dec. 2022


• Opsins in the ocular and extraocular photoreceptors in the marine gastropod Onchidium neurons.

  Ryota Matsuo, Sanae Kotoh, Kiyotaka Takishita, Sakamoto, K, Tatsuya Uebi, Mamiko Ozaki, Yuko Matsuo, Nishi, T

  JSCPB 2022, Nov. 2022


• チョウ目昆虫における暗期光中断を用いた休眠制御関連遺伝子の探索.

  岩本彩, 坂本克彦

  日本農芸化学会関西支部 第521回講演会, Jul. 2022


• マウスにおける慢性的な朝食欠食は海馬での記憶関連遺伝子の発現変動を介して認知機能を低下させる.

  大石勝隆, 岡内宏樹, 肥後(山本)明花, 宗和拓実, 大池秀明, 山本幸織, 坂本克彦

  第74回日本栄養・食糧学会大会, May 2020


• アブシジン酸により誘導されるシロイヌナズナMAP3K, MAP3K17/18の下流経路の検索.

  松岡大輔, 挟間雅幸, 南森隆司, 坂本克彦

  第60回日本植物生理学会, Mar. 2019


• 昆虫におけるP450遺伝子の発現に及ぼす摂食の影響

  岩井酉樹, SAKAMOTO KATSUHIKO

  日本農芸化学会関西支部 第506回講演会, Dec. 2018, Japanese, 神戸大学, Domestic conference

  Oral presentation


• セミの抜け殻が植物の生育に及ぼす影響

  梅澤高徳, SAKAMOTO KATSUHIKO

  日本農芸化学会関西支部 第506回講演会, Dec. 2018, Japanese, 神戸大学, Domestic conference

  Oral presentation


• 寄主のＪＨＡ処理によるギンケハラボソコマユバチの大型化

  岡澤圭祐, SAKAMOTO KATSUHIKO, MAETO KAORU

  日本昆虫学会第78回大会, Sep. 2018, Japanese, 名城大学, Domestic conference

  Poster presentation


• Detection of gene expression for photopigments in the Onchidium neurons.

  Takako NISHI, Katsuhiko SAKAMOTO

  JSCPB 2017 Fukuoka, Nov. 2017, Japanese, 福岡大学, Domestic conference

  Poster presentation


• 昆虫におけるP450遺伝子の発現に及ぼす摂食の影響

  岩井酉樹, SAKAMOTO KATSUHIKO

  西日本応用動物昆虫研究会・日本昆虫学会中国支部 平成29年度合同例会, Oct. 2017, Japanese, 神戸大学, Domestic conference

  Oral presentation


• 寄主のＪＨＡ処理理によるギンケハラボソコマユバチの⼤型化

  岡澤圭祐, MAETO KAORU, SAKAMOTO KATSUHIKO

  平成29年度西日本応用動物昆虫研究会・日本昆虫学会中国支部合同例会, Oct. 2017, Japanese, 神戸大学, Domestic conference

  Oral presentation


• セミの抜け殻が植物の生育に及ぼす影響

  梅澤高徳, SAKAMOTO KATSUHIKO

  西日本応用動物昆虫研究会・日本昆虫学会中国支部 平成29年度合同例会, Oct. 2017, Japanese, 神戸大学, Domestic conference

  Oral presentation


• チョウ目昆虫幼虫の農薬感受性リズム制御機構の解明

  江木 雄一, SAKAMOTO KATSUHIKO

  日本農芸化学会関西支部 第487回講演会, Dec. 2014, Japanese, 日本農芸化学会関西支部, 神戸大農学部, Domestic conference

  Oral presentation


• チョウ目昆虫幼虫の農薬感受性リズムの解析

  江木 雄一, SAKAMOTO KATSUHIKO

  日本昆虫学会近畿支部2014年度大会, Dec. 2014, Japanese, 日本昆虫学会近畿支部, 大阪市立自然史博物館, Domestic conference

  Oral presentation


• サクサン蛹の休眠覚醒における光周性にはメラトニンが関与する

  江木 雄一, 王 秋実, SAKAMOTO KATSUHIKO

  第21回日本時間生物学会学術大会, Nov. 2014, Japanese, 日本時間生物学会, 九州大学医学部百年講堂, Domestic conference

  Poster presentation


• Melatonin pathway transmits information to terminate pupal diapause and functions as a photoperiodic counter in the oak silkmoth, Antheraea pernyi.

  Yuichi EGI, Qiushi WANG, SAKAMOTO KATSUHIKO

  JSC International Symposium, Nov. 2014, Japanese, 日本時間生物学会, 九州大学医学部百年講堂, International conference

  Poster presentation


• マイクロアレイ解析によるカイコ休眠制御遺伝子の網羅的検索

  江木 雄一, 秋友 紫苑, SAKAMOTO KATSUHIKO

  日本農芸化学会関西支部 第485回講演会, Jul. 2014, Japanese, 日本農芸化学会関西支部, 大阪府立大学学術交流会館, Domestic conference

  Oral presentation


• 寄生蜂ギンケサムライコマユバチの歩行活動における概日時計の制御

  西村 卓真, 藤井 智浩, SAKAMOTO KATSUHIKO, MAETO KAORU

  第58回日本応用動物昆虫学会大会, Mar. 2014, Japanese, Domestic conference

  Poster presentation


• マイクロアレイ解析によるカイコ光周性制御遺伝子の網羅的解析.

  秋友 紫苑, 江木 雄一, SAKAMOTO KATSUHIKO

  日本昆虫学会近畿支部2013年度大会･日本鱗翅学会近畿支部第148回例会 合同大会, Dec. 2013, Japanese, 大阪（大阪市立自然史博物館）, Domestic conference

  Oral presentation


• サクサン蛹の休眠覚醒における光周性にはメラトニンとドーパミンが関与する

  王 秋実, 江木 雄一, 大石 勝隆, 竹田 真木生, SAKAMOTO KATSUHIKO

  第57回日本応用動物昆虫学会大会, Mar. 2013, Japanese, 藤沢（日本大学生物資源科学科）, Domestic conference

  Oral presentation


• 休眠制御可能な２化性カイコ系統の選別

  江木 雄一, 竹田 真木生, SAKAMOTO KATSUHIKO

  日本応用動物昆虫学会中国支部･日本昆虫学会中国支部 平成24年度合同例会, Oct. 2012, Japanese, 岡山（岡山大学50周年記念館）, Domestic conference

  Oral presentation


• 昆虫の休眠制御機構解明への挑戦

  SAKAMOTO KATSUHIKO

  日本蚕糸学会 平成24年度蚕糸･昆虫機能利用学術講演会‐日本蚕糸学会第82回大会‐, Mar. 2012, Japanese, 福岡（九州大学箱崎キャンパス）, Domestic conference

  Oral presentation


• 断頭カイコ幼虫における光受容.

  農端 洋行, 竹田 真木生, SAKAMOTO KATSUHIKO

  日本昆虫学会近畿支部2011年度大会･日本鱗翅学会近畿支部第144回例会 合同大会, Dec. 2011, Japanese, 大阪（大阪市立自然史博物館）, Domestic conference

  Oral presentation


• 昆虫の休眠制御因子の検索

  農端 洋行, 竹田 真木生, SAKAMOTO KATSUHIKO

  日本農芸化学会関西支部 第472回講演会, Dec. 2011, Japanese, 神戸（神戸大学農学部）, Domestic conference

  Oral presentation


• 昆虫の休眠制御機構解明への挑戦

  SAKAMOTO KATSUHIKO

  平成23年度日本応用動物昆虫学会中国支部･日本昆虫学会中国支部合同例会, Oct. 2011, Japanese, 神戸（神戸大学農学部）, Domestic conference

  Oral presentation


• カイコ幼虫末梢組織における時計遺伝子発現リズム.

  農端 洋行, 竹田 真木生, SAKAMOTO KATSUHIKO

  日本応用動物昆虫学会中国支部･日本昆虫学会中国支部 平成23年度合同例会, Oct. 2011, Japanese, 神戸（神戸大学農学部）, Domestic conference

  Oral presentation


• 昆虫の休眠制御因子の検索

  農端 洋行, 竹田 真木生, SAKAMOTO KATSUHIKO

  第17回日本野蚕学会, Sep. 2011, Japanese, 京都（京都工芸繊維大学）, Domestic conference

  Oral presentation


• 哺乳類の体内時計システム：中枢時計と末梢時計.

  SAKAMOTO KATSUHIKO

  兵庫バイオテクノロジー研究会第78回定例会, Mar. 2010, Japanese, 神戸（神戸大学農学部キャンパス）, Domestic conference

  Oral presentation


• 哺乳類の体内時計システム：中枢時計と末梢時計.

  SAKAMOTO KATSUHIKO

  第2回神戸大学バイオサイエンス研究会・若手交流会, Feb. 2010, Japanese, 神戸（神戸大学医学部キャンパス）, Domestic conference

  Oral presentation

• チョウ目昆虫を用いた光周性制御遺伝子の網羅的検索

  坂本 克彦

  学術研究助成基金助成金／基盤研究(C), Apr. 2017 - Mar. 2020, Principal investigator

  Competitive research funding


• Proteomic screening of proteins related to phase resetting mechanisms in mammalian circadian system

  SAKAMOTO Katsuhiko

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Mitsubishi Kagaku Institute of Life Sciences, 2007 - 2008

  本研究では、哺乳類の脳内時計中枢である視交叉上核由来の細胞株を用いて、体内時計の時刻同調(時計の針の時刻合わせ)機構に関与するタンパク質の検索を試みた。時計の針を動かす薬剤刺激を与えたときに発現量が変化するタンパク質を検索し、得られたタンパク質の機能阻害実験をおこなったところ、時刻同調機構に関与する可能性があるタンパク質を複数種類得ることができた。体内時計の入力系メカニズムの解明に結びつく発見となった。