Sachiko Tsukamoto

Summary

Affiliation: Kumamoto University
Country: Japan

Publications

  1. ncbi Inhibition of the ubiquitin-proteasome system by natural products for cancer therapy
    Sachiko Tsukamoto
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
    Planta Med 76:1064-74. 2010
  2. ncbi Halenaquinone inhibits RANKL-induced osteoclastogenesis
    Sachiko Tsukamoto
    Graduate School of Pharmaceutical Sciences, Kumamoto University, 5 1 Oe honmachi, Kumamoto 862 0973, Japan Electronic address
    Bioorg Med Chem Lett 24:5315-7. 2014
  3. ncbi Notoamide O, a structurally unprecedented prenylated indole alkaloid, and notoamides P-R from a marine-derived fungus, Aspergillus sp
    Sachiko Tsukamoto
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862 0973, Japan
    J Nat Prod 73:1438-40. 2010
  4. ncbi Aaptamine, an alkaloid from the sponge Aaptos suberitoides, functions as a proteasome inhibitor
    Sachiko Tsukamoto
    Graduate School of Pharmaceutical Sciences, Kumamoto University, 5 1 Oe honmachi, Kumamoto 862 0973, Japan
    Bioorg Med Chem Lett 20:3341-3. 2010
  5. ncbi Manzamine A, a marine-derived alkaloid, inhibits accumulation of cholesterol ester in macrophages and suppresses hyperlipidemia and atherosclerosis in vivo
    Keisuke Eguchi
    Department of Natural Medicines, Graduate School of Pharmaceutical Sciences, Kumamoto University, Oe honmachi 5 1, Kumamoto 862 0973, Japan
    Bioorg Med Chem 21:3831-8. 2013
  6. ncbi Acantholactam and pre-neo-kauluamine, manzamine-related alkaloids from the Indonesian marine sponge Acanthostrongylophora ingens
    Ahmed H El-Desoky
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Oe honmachi 5 1, Kumamoto 862 0973, Japan
    J Nat Prod 77:1536-40. 2014
  7. ncbi Manadosterols A and B, sulfonated sterol dimers inhibiting the Ubc13-Uev1A interaction, isolated from the marine sponge Lissodendryx fibrosa
    Shuntaro Ushiyama
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862 0973, Japan
    J Nat Prod 75:1495-9. 2012
  8. ncbi Variabines A and B: new β-carboline alkaloids from the marine sponge Luffariella variabilis
    Eriko Sakai
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, 862 0973, Japan
    J Nat Med 68:215-9. 2014
  9. ncbi Spongiacidin C, a pyrrole alkaloid from the marine sponge Stylissa massa, functions as a USP7 inhibitor
    Michitaka Yamaguchi
    Department of Natural Medicines, Graduate School of Pharmaceutical Sciences, Kumamoto University, Oe honmachi 5 1, Kumamoto 862 0973, Japan
    Bioorg Med Chem Lett 23:3884-6. 2013
  10. ncbi Acanthomanzamines A-E with new manzamine frameworks from the marine sponge Acanthostrongylophora ingens
    Akane Furusato
    Graduate School of Pharmaceutical Sciences, Kumamoto University, 5 1 Oe honmachi, Kumamoto 862 0973, Japan
    Org Lett 16:3888-91. 2014

Collaborators

  • Tsuyoshi Ikeda
  • Benjamin Nicholson
  • Yasushi Saeki
  • Masahiro Fujimuro
  • Ryoji Nagai
  • Masateru Ono
  • Hitoshi Yoshimitsu
  • Naomi Sakashita
  • Hikaru Kato
  • Remy E P Mangindaan
  • Hideyoshi Yokosawa
  • Nicole J de Voogd
  • Fitje Losung
  • Henki Rotinsulu
  • Yukio Fujiwara
  • Motohiro Takeya
  • Keisuke Eguchi
  • Mitsue Miyazaki
  • Rumi Yamanokuchi
  • Akane Furusato
  • Eriko Sakai
  • Ahmed H El-Desoky
  • Tetsuro Kawabata
  • Yuichi Nakamura
  • Michitaka Yamaguchi
  • James D Sunderhaus
  • Toshiyuki Kuwana
  • Hiroshi Morioka
  • Yoshiaki Suwa
  • Noriyuki Iwasaki
  • Shuntaro Ushiyama
  • Akinori Hayashida
  • Michio Namikoshi
  • Yumiko Nagasawa
  • Mona El-Aasr
  • Tatsuo Nehira
  • Fije Losung
  • David H Sherman
  • Robert M Williams
  • Hasita Horlad
  • Matthew P Kodrasov
  • Shengying Li
  • Jennifer M Finefield
  • Timothy J McAfoos
  • Wilmar Maarisit
  • Tadateru Nishikawa
  • Tadashi Watanabe
  • Hiroaki Terasawa
  • Kumiko Imada
  • Sosuke Yoshinaga
  • Hideharu Umaoka
  • Hiroshi Hirota
  • Makiko Yoshitomi
  • Reiko Ueoka
  • Keiichiro Tsurushima
  • Kazuyo Ukai
  • Naoki Horiuchi
  • Norika Daiguji
  • Hisayoshi Kobayashi
  • Toshihiro Nohara
  • Junei Kinjo
  • Masafumi Okawa
  • Daisuke Nakano

Detail Information

Publications18

  1. ncbi Inhibition of the ubiquitin-proteasome system by natural products for cancer therapy
    Sachiko Tsukamoto
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
    Planta Med 76:1064-74. 2010
    ..Here, we review natural products targeting the ubiquitin-proteasome system as well as synthetic compounds with potent inhibitory effects...
  2. ncbi Halenaquinone inhibits RANKL-induced osteoclastogenesis
    Sachiko Tsukamoto
    Graduate School of Pharmaceutical Sciences, Kumamoto University, 5 1 Oe honmachi, Kumamoto 862 0973, Japan Electronic address
    Bioorg Med Chem Lett 24:5315-7. 2014
    ..Thus, these results suggest that halenaquinone inhibits RANKL-induced osteoclastogenesis at least by suppressing the NF-κB and Akt signaling pathways. ..
  3. ncbi Notoamide O, a structurally unprecedented prenylated indole alkaloid, and notoamides P-R from a marine-derived fungus, Aspergillus sp
    Sachiko Tsukamoto
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862 0973, Japan
    J Nat Prod 73:1438-40. 2010
    ..The structure represents an unusual branch point for the oxidative modification of other members in the family of prenylated indole alkaloids in the biogenetic pathway...
  4. ncbi Aaptamine, an alkaloid from the sponge Aaptos suberitoides, functions as a proteasome inhibitor
    Sachiko Tsukamoto
    Graduate School of Pharmaceutical Sciences, Kumamoto University, 5 1 Oe honmachi, Kumamoto 862 0973, Japan
    Bioorg Med Chem Lett 20:3341-3. 2010
    ....
  5. ncbi Manzamine A, a marine-derived alkaloid, inhibits accumulation of cholesterol ester in macrophages and suppresses hyperlipidemia and atherosclerosis in vivo
    Keisuke Eguchi
    Department of Natural Medicines, Graduate School of Pharmaceutical Sciences, Kumamoto University, Oe honmachi 5 1, Kumamoto 862 0973, Japan
    Bioorg Med Chem 21:3831-8. 2013
    ..Although manzamine A has been reported to show several biological activities, this is the first report of a suppressive effect of manzamine A on atherosclerosis in vivo...
  6. ncbi Acantholactam and pre-neo-kauluamine, manzamine-related alkaloids from the Indonesian marine sponge Acanthostrongylophora ingens
    Ahmed H El-Desoky
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Oe honmachi 5 1, Kumamoto 862 0973, Japan
    J Nat Prod 77:1536-40. 2014
    ..Compound 4 was converted to the dimer 2 during storage, suggesting nonenzymatic dimer formation. Among the four isolated compounds, 1, 2, and 4 showed proteasome inhibitory activity. ..
  7. ncbi Manadosterols A and B, sulfonated sterol dimers inhibiting the Ubc13-Uev1A interaction, isolated from the marine sponge Lissodendryx fibrosa
    Shuntaro Ushiyama
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862 0973, Japan
    J Nat Prod 75:1495-9. 2012
    ..They are the second and third natural compounds showing inhibitory activities against the Ubc13-Uev1A interaction and are more potent than leucettamol A (IC(50), 106 μM), the first such inhibitor, isolated from another marine sponge...
  8. ncbi Variabines A and B: new β-carboline alkaloids from the marine sponge Luffariella variabilis
    Eriko Sakai
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, 862 0973, Japan
    J Nat Med 68:215-9. 2014
    ..Compound 2 inhibited chymotrypsin-like activity of the proteasome and Ubc13 (E2)-Uev1A interaction with IC50 values of 4 and 5 μg/mL, respectively, whereas 1 had little effect on the activity or interaction...
  9. ncbi Spongiacidin C, a pyrrole alkaloid from the marine sponge Stylissa massa, functions as a USP7 inhibitor
    Michitaka Yamaguchi
    Department of Natural Medicines, Graduate School of Pharmaceutical Sciences, Kumamoto University, Oe honmachi 5 1, Kumamoto 862 0973, Japan
    Bioorg Med Chem Lett 23:3884-6. 2013
    ..We isolated spongiacidin C from the marine sponge Stylissa massa as the first USP7 inhibitor from a natural source. This compound inhibited USP7 most strongly with an IC50 of 3.8 μM among several USP family members tested...
  10. ncbi Acanthomanzamines A-E with new manzamine frameworks from the marine sponge Acanthostrongylophora ingens
    Akane Furusato
    Graduate School of Pharmaceutical Sciences, Kumamoto University, 5 1 Oe honmachi, Kumamoto 862 0973, Japan
    Org Lett 16:3888-91. 2014
    ..Acanthomanzamines D and E have an additional oxazolidine and 2-methyloxazolidine rings, respectively, which fuse to the manzamine skeleton. ..
  11. ncbi Siladenoserinols A-L: new sulfonated serinol derivatives from a tunicate as inhibitors of p53-Hdm2 interaction
    Yuichi Nakamura
    Graduate School of Pharmaceutical Sciences, Kumamoto University, 5 1 Oe honmachi, Kumamoto 862 0973, Japan
    Org Lett 15:322-5. 2013
    ..They inhibited p53-Hdm2 interaction with IC(50) values of 2.0-55 μM. Among them, siladenoserinol A and B exhibited the strongest inhibition with an IC(50) value of 2.0 μM...
  12. ncbi Triterpenoids isolated from Zizyphus jujuba inhibit foam cell formation in macrophages
    Yukio Fujiwara
    Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
    J Agric Food Chem 59:4544-52. 2011
    ..These data suggest that triterpenoids in Zizyphus jujuba , the plant source of ZF and ZS, may therefore be useful for the prevention of atherosclerosis...
  13. ncbi Isolation of salsolinol, a tetrahydroisoquinoline alkaloid, from the marine sponge Xestospongia cf. vansoesti as a proteasome inhibitor
    Yumiko Nagasawa
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
    Chem Pharm Bull (Tokyo) 59:287-90. 2011
    ..Compounds 1 and 2 inhibited the chymotrypsin-like activity of the proteasome with IC(50) values of 50 and 32 µg/ml, respectively, but 3 and 4 showed no inhibitory effect even at 100 µg/ml...
  14. ncbi Hyrtioreticulins A-E, indole alkaloids inhibiting the ubiquitin-activating enzyme, from the marine sponge Hyrtios reticulatus
    Rumi Yamanokuchi
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862 0973, Japan
    Bioorg Med Chem 20:4437-42. 2012
    ..So far, only five E1 inhibitors, panapophenanthrine, himeic acid A, largazole, and hyrtioreticulins A and B (1 and 2), have been isolated from natural sources and, among them, 1 is the most potent E1 inhibitor...
  15. ncbi Himeic acids E-G, new 4-pyridone derivatives from a culture of Aspergillus sp
    Toshiyuki Kuwana
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862 0973, Japan
    Chem Pharm Bull (Tokyo) 61:105-7. 2013
    ..and their structures were determined by spectroscopic analysis. Although himeic acid A inhibited the activity of ubiquitin-activating enzyme (E1), the three new derivatives did not...
  16. ncbi [Study on natural products for drug development]
    Sachiko Tsukamoto
    Graduate School of Pharmaceutical Sciences, Kumamoto University, Oe Honmachi, Kumamoto, Japan
    Yakugaku Zasshi 130:1273-81. 2010
    ..Recently, the isolation of the antipodes of notoamides from the terrestrial Aspergillus has been reported. We propose that each enantiomer is generated by a distinct face-selective IMDA...
  17. pmc Synthesis and bioconversions of notoamide T: a biosynthetic precursor to stephacidin A and notoamide B
    James D Sunderhaus
    Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA
    Org Lett 15:22-5. 2013
    ..Furthermore, [(13)C](2)-notoamide T was synthesized and provided to Aspergillus versicolor and Aspergillus sp. MF297-2, in which significant incorporation was observed in the advanced metabolite, notoamide B...
  18. ncbi Onionin A from Allium cepa inhibits macrophage activation
    Mona El-Aasr
    Graduate School of Pharmaceutical Sciences, Faculty of Life Sciences, Kumamoto University, 5 1 Oe honmachi, Kumamoto, Japan
    J Nat Prod 73:1306-8. 2010
    ..This compound showed the potential to suppress tumor-cell proliferation by inhibiting the polarization of M2 alternatively activated macrophages...